CN102764469A - Automatic calibration method and system for pressure of injection pump - Google Patents
Automatic calibration method and system for pressure of injection pump Download PDFInfo
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- CN102764469A CN102764469A CN2012102317553A CN201210231755A CN102764469A CN 102764469 A CN102764469 A CN 102764469A CN 2012102317553 A CN2012102317553 A CN 2012102317553A CN 201210231755 A CN201210231755 A CN 201210231755A CN 102764469 A CN102764469 A CN 102764469A
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Abstract
The invention discloses an automatic calibration system for pressure of an injection pump. The automatic calibration system comprises an injector used for injection, a pressure detection unit and an injection pump; the pressure detection unit is connected with the injector and is used for detecting a pressure value of the water outlet end of the injector; the injection pump comprises a mechanical action part and an electric control part; and the electric control part controls the injector to inject according to the prestored corresponding relation of pressure values and voltage values, receives the voltage values output by a pressure sensor under the continuous pressure values during injection of the injector, and stores the corresponding relation of the pressure values and the voltage values. The automatic calibration system for pressure of the injection pump replaces the prestored corresponding relation of pressure values and voltage values with the obtained corresponding relation of pressure values and voltage values, and stores the obtained corresponding relation, so that calibration of preset injection parameters of the injector and practical injection parameters of the injector of the injection pump is realized, and the problems of low efficiency and incomplete data of manual calibration are solved. Moreover, the invention also provides an automatic calibration method for pressure of the injection pump.
Description
Technical field
The present invention relates to area of medical devices, particularly relate to a kind of syringe pump pressure automatic calibrating method and system.
Background technology
In medical treatment and industrial instrumentation equipment; Often use syringe pump equipment, syringe pump is through its machinery pushing syringe, realizes steady pulseless liquid transfer; And in the process of transmission, the output pressure and the output speed of the injection that syringe is exported have higher requirements.Because of syringe receives syringe pump control, so in the production or application process of syringe pump, need carry out adjustment to realize output pressure or output speed accurately to the machinery of syringe pump and the driving device that is used for the drive mechanism action.
The current pressure calibration program needs personal monitoring's injection process; And the manual pressure data of gathering; Basic operation is that the syringe full of liquid is installed on the syringe pump; The syringe water side is connected on the Pressure gauge, and the operation syringe pump moves with the control injector to inject according to the force value and the magnitude of voltage corresponding relation of pre-stored.The manometric numerical value of personal monitoring in the injection process; Operation syringe pump when force value reaches designated parameter; Manually gather the output voltage values that current data is obtained the pressure transducer between machinery and the syringe; Get two values in the process altogether, syringe pump fits to a curve through two force value of gathering with the pressure transducer output voltage values, this curve representation force value and the magnitude of voltage corresponding relation of relation exported of pressure and sensor voltage to replace above-mentioned pre-stored; Thereby realize the mutual calculating of pressure and sensor voltage output, realize calibration.
Find out that so existing calibration program needs staff's complete monitoring, the characteristics of data acquisition craftization have cost height, low, the insufficient shortcoming of data integrity of efficient.
Summary of the invention
Based on this, being necessary needs staff's complete monitoring to existing calibration program, and data acquisition craftization problem provides the syringe pump pressure automated calibration system of a kind of calibration efficiency height, data integrity.
In addition, a kind of syringe pump pressure automatic calibrating method also is provided.
A kind of syringe pump pressure automated calibration system comprises:
Syringe is used for injection;
Pressure sensing cell is connected with said syringe, is used to detect the force value of the water side of said syringe;
Syringe pump comprises mechanical action part and electric control system, and said electric control system drives said mechanical action according to the corresponding relation of the force value of pre-stored and magnitude of voltage and partly controls said injector to inject; Said syringe is set up in the control end that said mechanical action partly is provided with pressure transducer;
Said electric control system also is electrically connected and obtains said force value with said pressure sensing cell; And obtain the magnitude of voltage that said pressure transducer is exported under the successive force value in the said injector to inject process, the corresponding relation of said force value that gets access to and magnitude of voltage is replaced the force value of said pre-stored and the corresponding relation and the storage of magnitude of voltage.
Among embodiment, the electric control system of said syringe pump comprises force value acquiring unit, control unit, memory element therein, wherein,
The force value acquiring unit is electrically connected with said pressure sensing cell, is used to obtain said force value;
Control unit; Be connected with said force value acquiring unit, memory element and pressure transducer, be used for said force value and magnitude of voltage calculated that curve of match is replaced the force value of said pre-stored as reference voltage pressure dependence curve and the corresponding relation of magnitude of voltage is stored in said memory element.
Therein among embodiment; The mechanical action of said syringe pump partly comprises the motor that is connected with said control unit, and the control instruction that said control unit is imported according to the outside moves to promote said syringe according to the said control end of the said said driven by motor of reference voltage pressure dependence curve controlled does the piston motion.
Therein among embodiment; The electric control system of said syringe pump also comprises the alarm unit that is connected with said control unit; When the said magnitude of voltage that obtains in real time in the said injector to inject process and the relation curve of force value gained departed from said reference voltage pressure dependence curve, said control unit was controlled said alarm unit and is given the alarm.
A kind of syringe pump pressure automatic calibrating method may further comprise the steps:
Detect the force value of the water side of said syringe in injection process;
Gather the said successive force value corresponding voltage value that produces in the process of said syringe according to the corresponding relation injection of the force value of pre-stored and magnitude of voltage;
The corresponding relation of said force value that collects and magnitude of voltage is replaced the force value of said pre-stored and the corresponding relation and the storage of magnitude of voltage.
Among embodiment, the step of the magnitude of voltage in the said injector to inject process of said collection under each said force value comprises therein:
Obtain said force value;
Said force value that gets access to and magnitude of voltage are calculated curve of match as reference voltage pressure dependence curve.
Therein among embodiment; After step, comprise also that control instruction according to the outside input moves to promote said syringe according to the said control end of the said said driven by motor of reference voltage pressure dependence curve controlled to do the step of piston motion with the storage of the corresponding relation of said force value and magnitude of voltage.
Therein among embodiment, the step that the relation curve that also comprises the said magnitude of voltage that obtains in real time in the said injector to inject process and force value gained gives the alarm when departing from said reference voltage pressure dependence curve.
Above-mentioned syringe pump pressure automated calibration system obtains the force value of the water side of syringe continuously through pressure sensing cell; The electric control system of syringe pump is according to the force value of pre-stored and the corresponding relation driving device action part control injector to inject of magnitude of voltage; And obtain the magnitude of voltage that successive force value lower pressure sensor is exported in the injector to inject process; This force value and magnitude of voltage are for continuously and one to one; The corresponding relation of force value that gets access to and magnitude of voltage is replaced the force value of pre-stored and the corresponding relation and the storage of magnitude of voltage; Realize establishing in the syringe pump calibration of the actual parameter of controlling injector to inject parameter and injector to inject, overcome the incomplete problem of manual calibration inefficiency and data.
Description of drawings
Fig. 1 is the syringe pump pressure automated calibration system structural representation among the embodiment;
Fig. 2 is the syringe pump pressure automated calibration system module diagram among the embodiment;
Fig. 3 is a syringe pump pressure automatic calibrating method flow chart among the embodiment;
Fig. 4 is the workflow diagram that syringe pump is gathered magnitude of voltage among the embodiment;
Fig. 5 is the syringe pump pressure automatic calibrating method flow chart in the preferred embodiment;
Fig. 6 is the syringe pump speed automated calibration system structural representation among the embodiment;
Fig. 7 is the syringe pump speed automated calibration system module diagram among the embodiment;
Fig. 8 is a syringe pump speed automatic calibrating method flow chart among the embodiment;
Fig. 9 is the workflow diagram that syringe pump is gathered magnitude of voltage among the embodiment;
Figure 10 is the syringe pump speed automatic calibrating method flow chart in the preferred embodiment.
The specific embodiment
In conjunction with Fig. 1, shown in 2, be a kind of syringe pump pressure automated calibration system in the preferred embodiment, it comprises syringe 100, pressure sensing cell 200 and syringe pump 300.
Syringe 100 is used for injection; Pressure sensing cell 200 is electrically connected with syringe 100, be used to detect syringe 100 water side 120 force value and this force value is transferred to syringe pump 300; Syringe pump 300; Comprise mechanical action part 302 and electric control system 304; Electric control system 302 is according to the force value of pre-stored and corresponding relation driving device action part 304 control syringes 100 injections of magnitude of voltage, and syringe 100 is set up in the control end 330 that mechanical action part 302 is provided with pressure transducer 320; Electric control system 304 is electrically connected and obtains force value with pressure sensing cell 200; And obtain the magnitude of voltage that successive force value lower pressure sensor 320 is exported in syringe 100 injection process, the corresponding relation of force value that gets access to and magnitude of voltage is replaced the injection speed value of pre-stored and the corresponding relation and the storage of magnitude of voltage.
It is understandable that the corresponding relation of stored pressure value and magnitude of voltage is the parameter that syringe pump 300 preset values are used to control syringe 100 injection output relevant pressures or speed, and in fact, the parameter of preset value is not necessarily accurate, thereby needs adjustment.
Above-mentioned syringe pump pressure automated calibration system obtains the force value of the water side 120 of syringe 100 continuously through pressure sensing cell 200; The electric control system 302 of syringe pump 300 is according to the force value of pre-stored and corresponding relation driving device action part 304 control syringes 100 injections of magnitude of voltage; And obtain the magnitude of voltage that successive force value lower pressure sensor 320 is exported in syringe 300 injection process; This force value and magnitude of voltage are for continuously and one to one; The corresponding relation of force value that gets access to and magnitude of voltage is replaced the force value of pre-stored and the corresponding relation and the storage of magnitude of voltage; Realize establishing in the syringe pump 300 calibration of the actual parameter of controlling syringe 100 injection parameters and syringe 100 injections, overcome the incomplete problem of manual calibration inefficiency and data.
As shown in Figure 2; The test side of pressure sensing cell 200 links to each other with the water side 120 (please with reference to Fig. 1) of syringe 100; Detect and record syringe 100 successive each force value in injection process, simultaneously detected force value is transferred in the force value acquiring unit 312 of syringe pump 300 through data wire.
The electric control system 302 of syringe pump 300 comprises force value acquiring unit 312, control unit 340, memory element 360 and motor 380.
Force value acquiring unit 312 is electrically connected with pressure sensing cell 200, is used to obtain force value.
In the present embodiment; Pressure transducer 320 is interposed between the control end 330 and syringe 100 of syringe pump 300; Syringe 300 drives control ends 330 when pushing syringe 100 is done the piston motion through the interior driving parameters drive motors 380 established, and pressure transducer 320 just can be sensed the motive force of control end 330 and export the correspondent voltage value and be transferred to control unit 340.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, is connected with motor 380, and with syringe 100 clampings, control end 330 moves under the driving of motor 380 with pushing syringe 100 and does the piston motion outside syringe pump 300.
In fact; The data of the data of pressure transducer 320 inductions and output and pressure sensing cell 200 detections and output are synchronously real-time and corresponding, have realized establishing in data integrity and the high efficiency syringe pump 300 calibration of driving parameters (magnitude of voltage) and controlled syringe 100 output parameters (force value).Control unit 340 is with the above-mentioned data that both produce---curve of force value and magnitude of voltage calculating match as reference voltage pressure dependence profile memory to memory element 360; Inject as reference control parameter control syringe 100 for syringe pump 300; So under the situation, can remove pressure sensing cell 200.
The mechanical action part 304 of syringe pump 300 comprises the motor 380 that is connected with control unit 340, and the control instruction that control unit 340 is imported according to the outside moves with pushing syringe 100 according to reference voltage pressure dependence curve controlled motor 380 drive control ends 330 does the piston motion.In fact, syringe pump 300 outsides generally are provided with the gear structure of control syringe 100 with different pressures or speed injection, the mode that this gear structure can be push button, knob or touch-control etc.; The control instruction of so outside input is equivalent to be used under each different gear trigger different input voltages or the different input current of motor 380 with different rates work.Be benchmark job with reference voltage pressure dependence curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output pressures when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
The electric control system 302 of syringe pump 300 also comprises the alarm unit 390 that is connected with control unit 340; When the magnitude of voltage that obtains in real time in syringe 100 injection process and the relation curve of force value gained departed from reference voltage pressure dependence curve, control unit 340 control alarm units 390 gave the alarm.Particularly; Maybe be because the damage of machine or system insert the supply voltage instability; The instruction of outside input control corresponding makes motor 380 drive 100 injections of control end 330 pushing syringes; If occur to detect reference voltage pressure dependence curve that control end 330 promotes to store in magnitude of voltage and corresponding with it pressure sensing cell 200 detected force value and the memory element 360 of pressure transducer 320 outputs of pressure when not corresponding, control unit 340 will trigger this alarm unit 390 and give the alarm.
Above-mentioned syringe pump pressure automated calibration system obtains the force value of the water side 120 of syringe 100 continuously through pressure sensing cell 200; Syringe pump 300 is gathered the magnitude of voltage that each force value lower pressure sensor 320 is exported in syringe 100 injection process; This force value and magnitude of voltage are for continuously and one to one; Realize establishing in the syringe pump 300 calibration of the actual parameter of controlling syringe 100 injection parameters and syringe 100 injections, overcome the incomplete problem of manual calibration inefficiency and data.Be benchmark job with reference voltage pressure dependence curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output pressures when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
In conjunction with Fig. 2 and Fig. 3, a kind of syringe pump pressure automatic calibrating method may further comprise the steps (combining Fig. 2 to describe):
Step S510, the force value of the water side of detection syringe in injection process.Particularly; The test side of pressure sensing cell 200 links to each other with the water side 120 (please with reference to Fig. 1) of syringe 100; Detect and record syringe 100 successive each force value in injection process, simultaneously detected force value is transferred in the force value acquiring unit 312 of syringe pump 300 through data wire.
Step S520 gathers the said successive force value corresponding voltage value that produces in the process of said syringe according to the corresponding relation injection of the force value of pre-stored and magnitude of voltage.In the present embodiment; There is pressure transducer 320 to be interposed between the control end 330 and syringe 100 of syringe pump 300; Syringe 300 drives control end 330 when pushing syringe 100 is done the piston motion through the interior driving parameters drive motors 380 of establishing, and pressure transducer 320 just can be sensed the motive force of control end 330 and export the correspondent voltage value.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, is connected with motor 380, and with syringe 100 clampings, control end 330 moves under the driving of motor 380 with pushing syringe 100 and does the piston motion outside syringe pump 300.Particularly, in conjunction with Fig. 2 and Fig. 4, step S520 comprises step S522 and step S524.
Step S522 obtains force value.Force value acquiring unit 312 is electrically connected with pressure sensing cell 200, is used to obtain force value.
Step S524 calculates curve of match as reference voltage pressure dependence curve with said force value that gets access to and magnitude of voltage.In fact; The data of the data of pressure transducer 320 inductions and output and pressure sensing cell 200 detections and output are synchronously real-time and corresponding, have realized establishing in data integrity and the high efficiency syringe pump 300 calibration of driving parameters (magnitude of voltage) and controlled syringe 100 output parameters (force value)
Step S530 replaces the force value of said pre-stored and the corresponding relation and the storage of magnitude of voltage with the corresponding relation of said force value that collects and magnitude of voltage.Control unit 340 is with the above-mentioned data that both produce---force value and magnitude of voltage calculate curve of match replace as reference voltage pressure dependence curve pre-stored force value and magnitude of voltage corresponding relation and be stored to memory element 360; Reference voltage pressure dependence curve is supplied syringe pump 300 as 100 injections of reference control parameter control syringe; So under the situation, can remove pressure sensing cell 200.
In a preferred embodiment, in conjunction with Fig. 2 and Fig. 5, syringe pump pressure automatic calibrating method also comprises step S540 and S550.
Step S540 moves to promote said syringe according to the said control end of the said said driven by motor of reference voltage pressure dependence curve controlled according to the control instruction of outside input and to do the piston motion.Motor 380 is connected with control unit 340, and the control instruction that control unit 340 is imported according to the outside moves with pushing syringe 100 according to reference voltage pressure dependence curve controlled motor 380 drive control ends 330 does the piston motion.In fact, syringe pump 300 outsides generally are provided with the gear structure of control syringe 100 with different pressures or speed injection, the mode that this gear structure can be push button, knob or touch-control etc.; The control instruction of so outside input is equivalent to be used under each different gear trigger different input voltages or the different input current of motor 380 with different rates work.Be benchmark job with reference voltage pressure dependence curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output pressures when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
The step that step S550, the said magnitude of voltage that obtains in real time in the said injector to inject process and the relation curve of force value gained give the alarm when departing from said reference voltage pressure dependence curve.Syringe pump 300 also comprises the alarm unit 390 that is connected with control unit 340; When the magnitude of voltage that obtains in real time in syringe 100 injection process and the relation curve of force value gained departed from reference voltage pressure dependence curve, control unit 340 control alarm units 390 gave the alarm.Particularly; Maybe be because the damage of machine or system insert the supply voltage instability; The instruction of outside input control corresponding makes motor 380 drive 100 injections of control end 330 pushing syringes; If occur to detect reference voltage pressure dependence curve that control end 330 promotes to store in magnitude of voltage and corresponding with it pressure sensing cell 200 detected force value and the memory element 360 of pressure transducer 320 outputs of pressure when not corresponding, control unit 340 will trigger this alarm unit 390 and give the alarm.
The force value of the water side 120 of above-mentioned syringe pump pressure automatic calibrating method through obtaining syringe 100 continuously; The electric control system 302 of syringe 300 is according to the force value of pre-stored and corresponding relation driving device action part 304 control syringes 100 injections of magnitude of voltage; And obtain the magnitude of voltage that each force value lower pressure sensor 320 is exported in the injection process; This force value and magnitude of voltage are for continuously and one to one; The corresponding relation of force value that gets access to and magnitude of voltage is replaced the force value of pre-stored and the corresponding relation and the storage of magnitude of voltage; Realize establishing in the syringe pump 300 calibration of the actual parameter of controlling syringe 100 injection parameters and syringe 100 injections, overcome the incomplete problem of manual calibration inefficiency and data.Be benchmark job with reference voltage pressure dependence curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output pressures when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
In addition, a kind of syringe pump speed automated calibration system is also disclosed.In conjunction with Fig. 6, shown in 7, it comprises syringe 100, syringe pump 300 and speed detection unit 400 syringe pump speed automated calibration system.
Above-mentioned syringe pump speed automated calibration system obtains the injection speed value of the water side 120 of syringe 100 continuously through speed detection unit 400; The electric control system 302 of syringe pump 300 is according to the injection speed value of pre-stored and corresponding relation driving device action part 304 control syringes 100 injections of magnitude of voltage; And obtain the magnitude of voltage that successive injection speed value bottom offset pick off 350 is exported in syringe 300 injection process; This injection speed value and magnitude of voltage are for continuously and one to one; The corresponding relation of injection speed value that gets access to and magnitude of voltage is replaced the injection speed value of pre-stored and the corresponding relation and the storage of magnitude of voltage; Realize establishing in the syringe pump 300 calibration of the actual parameter of controlling syringe 100 injection parameters and syringe 100 injections, overcome the incomplete problem of manual calibration inefficiency and data.
As shown in Figure 7; The test side of speed detection unit 400 links to each other with the water side 120 (please with reference to Fig. 6) of syringe 100; Detect and record syringe 100 successive each injection speed value in injection process; Specifically be through detecting the output of water side 120 injection in the unit interval, so the output of injection speed value=injection the unit interval, simultaneously detected injection speed value is transferred in the velocity amplitude acquiring unit 314 of syringe pump 300 through data wire.
The electric control system 302 of syringe pump 300 comprises velocity amplitude acquiring unit 314, control unit 340, memory element 360 and motor 380.
Velocity amplitude acquiring unit 314 is electrically connected with speed detection unit 400, is used to obtain the injection speed value.
In the present embodiment; Displacement transducer 350 is interposed between the control end 330 and syringe 100 of syringe pump 300; Syringe 300 drives control ends 330 when pushing syringe 100 is done the piston motion through the interior driving parameters drive motors 380 established, and displacement transducer 350 just can be sensed the motive force of control end 330 and export the correspondent voltage value and be transferred to control unit 340.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, moves with motor 380 to be connected, and outside syringe pump 300, syringe 100 is connected, and control end 330 moves under the driving of motor 380 to be done piston with pushing syringe 100 and move.
In fact; The data of the data of displacement transducer 350 inductions and output and speed detection unit 400 detections and output are synchronously real-time and corresponding, have realized establishing in data integrity and the high efficiency syringe pump 300 calibration of driving parameters (magnitude of voltage) and controlled syringe 100 output parameters (injection speed value).Control unit 340 is with the above-mentioned data that both produce---injection speed value and magnitude of voltage calculate curve of match and be stored to memory element 360 as the reference voltage tensionvelocity curve; Inject as reference control parameter control syringe 100 for syringe pump 300; So under the situation, can remove speed detection unit 400.
The mechanical action part 304 of syringe pump 300 comprises the motor 380 that is connected with control unit 340, and the control instruction that control unit 340 is imported according to the outside moves with pushing syringe 100 according to reference voltage tensionvelocity curve control motor 380 drive control ends 330 does the piston motion.In fact, syringe pump 300 outsides generally are provided with the gear structure of control syringe 100 with different pressures or speed injection, the mode that this gear structure can be push button, knob or touch-control etc.; The control instruction of so outside input is equivalent to be used under each different gear trigger different input voltages or the different input current of motor 380 with different rates work.Be benchmark job with the reference voltage tensionvelocity curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output speeds when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
The electric control system 302 of syringe pump 300 also comprises the alarm unit 390 that is connected with control unit 340; When the relation curve of magnitude of voltage that obtains in real time in syringe 100 injection process and injection speed value gained departed from the reference voltage tensionvelocity curve, control unit 340 control alarm units 390 gave the alarm.Particularly; Maybe be because the damage of machine or system insert the supply voltage instability; The instruction of outside input control corresponding makes motor 380 drive 100 injections of control end 330 pushing syringes; If when the reference voltage tensionvelocity curve of storing in the magnitude of voltage of displacement transducer 350 outputs of appearance detection control end 330 driving velocities and corresponding with it speed detection unit 400 detected injection speed values and the memory element 360 was not corresponding, control unit 340 will trigger this alarm unit 390 and give the alarm.
Above-mentioned syringe pump speed automated calibration system obtains the injection speed value of the water side 120 of syringe 100 continuously through speed detection unit 400; Syringe pump 300 is gathered the magnitude of voltage that each injection speed value bottom offset pick off 350 is exported in syringe 100 injection process; This injection speed value and magnitude of voltage are for continuously and one to one; Realize establishing in the syringe pump 300 calibration of the actual parameter of controlling syringe 100 injection parameters and syringe 100 injections, overcome the incomplete problem of manual calibration inefficiency and data.Be benchmark job with the reference voltage tensionvelocity curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output speeds when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
In conjunction with Fig. 7 and Fig. 8, a kind of syringe pump speed automatic calibrating method may further comprise the steps:
Step S610 detects the injection volume of the water side in the injector to inject process and draws the injection speed value.Particularly; The test side of speed detection unit 400 links to each other with the water side 120 (please with reference to Fig. 6) of syringe 100; Detect and record syringe 100 successive each injection speed value in injection process; Specifically be through detecting the output of water side 120 injection in the unit interval, so the output of injection speed value=injection the unit interval, simultaneously detected injection speed value is transferred in the velocity amplitude acquiring unit 314 of syringe pump 300 through data wire.
Step S620 gathers the successive said injection speed value corresponding voltage value that produces in the process of said syringe according to the corresponding relation injection of the injection speed value of pre-stored and magnitude of voltage.In the present embodiment; There is displacement transducer 350 to be interposed between the control end 330 and syringe 100 of syringe pump 300; Syringe 300 drives control end 330 when pushing syringe 100 is done the piston motion through the interior driving parameters drive motors 380 of establishing, and displacement transducer 350 just can be sensed the motive force of control end 330 and export the correspondent voltage value.The control end 330 of syringe pump 300 is specially a clamping device, in syringe pump 300, is connected with motor 380, and with syringe 100 clampings, control end 330 moves under the driving of motor 380 with pushing syringe 100 and does the piston motion outside syringe pump 300.Particularly, in conjunction with Fig. 7 and Fig. 9, step S620 comprises step S622 and step S624.
Step S622 obtains the injection speed value.Velocity amplitude acquiring unit 314 is electrically connected with speed detection unit 400, is used to obtain the injection speed value.
Step S624 calculates curve of match as the reference voltage tensionvelocity curve with said injection speed value that gets access to and magnitude of voltage.In fact; The data (injection speed value) of the data (magnitude of voltage) of displacement transducer 350 inductions and output and speed detection unit 400 detections and output are also corresponding synchronously in real time, have realized establishing in data integrity and the high efficiency syringe pump 300 calibration of driving parameters (magnitude of voltage) and controlled syringe 100 output parameters (injection speed value).
Step S630 replaces the injection speed value of said pre-stored and the corresponding relation and the storage of magnitude of voltage with the corresponding relation of said injection speed value that collects and magnitude of voltage.Control unit 340 is with the above-mentioned data that both produce---injection speed value and magnitude of voltage calculate curve of match replace as the reference voltage tensionvelocity curve pre-stored injection speed value and magnitude of voltage corresponding relation and be stored to memory element 360; The reference voltage tensionvelocity curve is supplied syringe pump 300 as 100 injections of reference control parameter control syringe; So under the situation, can remove speed detection unit 400.
In a preferred embodiment, in conjunction with Fig. 7 and Figure 10, syringe pump speed automatic calibrating method also comprises step S640 and S650.
Step S640 controls the said control end of said driven by motor according to the control instruction of outside input according to said reference voltage tensionvelocity curve and moves to promote said syringe and do the piston motion.Motor 380 is connected with control unit 340, and the control instruction that control unit 340 is imported according to the outside moves with pushing syringe 100 according to reference voltage tensionvelocity curve control motor 380 drive control ends 330 does the piston motion.In fact, syringe pump 300 outsides generally are provided with the gear structure of control syringe 100 with different pressures or speed injection, the mode that this gear structure can be push button, knob or touch-control etc.; The control instruction of so outside input is equivalent to be used under each different gear trigger different input voltages or the different input current of motor 380 with different rates work.Be benchmark job with the reference voltage tensionvelocity curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output speeds when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
Step S650, the relation curve of said magnitude of voltage that obtains in real time in the said injector to inject process and injection speed value gained give the alarm when departing from said reference voltage tensionvelocity curve.Syringe pump 300 also comprises the alarm unit 390 that is connected with control unit 340; When the relation curve of magnitude of voltage that obtains in real time in syringe 100 injection process and injection speed value gained departed from the reference voltage tensionvelocity curve, control unit 340 control alarm units 390 gave the alarm.Particularly; Maybe be because the damage of machine or system insert the supply voltage instability; The instruction of outside input control corresponding makes motor 380 drive 100 injections of control end 330 pushing syringes; If when the reference voltage tensionvelocity curve of storing in the magnitude of voltage of displacement transducer 350 outputs of appearance detection control end 330 driving velocities and corresponding with it speed detection unit 400 detected injection speed values and the memory element 360 was not corresponding, control unit 340 will trigger this alarm unit 390 and give the alarm.
The injection speed value of the water side 120 of above-mentioned syringe pump speed automatic calibrating method through obtaining syringe 100 continuously; The electric control system 302 of syringe 300 is according to the injection speed value of pre-stored and corresponding relation driving device action part 304 control syringes 100 injections of magnitude of voltage; And obtain the magnitude of voltage that each velocity amplitude bottom offset pick off 320 is exported in the injection process; This injection speed value and magnitude of voltage are for continuously and one to one; The corresponding relation of injection speed value that gets access to and magnitude of voltage is replaced the injection speed value of pre-stored and the corresponding relation and the storage of magnitude of voltage; Realize establishing in the syringe pump 300 calibration of the actual parameter of controlling syringe 100 injection parameters and syringe 100 injections, overcome the incomplete problem of manual calibration inefficiency and data.Be benchmark job with the reference voltage tensionvelocity curve under the triggering of the control instruction that motor 380 is externally imported, guaranteed the accuracy of water side 120 output speeds when motor 380 drives 100 injections of control ends 330 pushing syringes, improved work efficiency.
The above embodiment has only expressed several kinds of embodiments of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with accompanying claims.
Claims (8)
1. a syringe pump pressure automated calibration system is characterized in that, comprising:
Syringe is used for injection;
Pressure sensing cell is connected with said syringe, is used to detect the force value of the water side of said syringe;
Syringe pump comprises mechanical action part and electric control system, and said electric control system drives said mechanical action according to the corresponding relation of the force value of pre-stored and magnitude of voltage and partly controls said injector to inject; Said syringe is set up in the control end that said mechanical action partly is provided with pressure transducer;
Said electric control system also is electrically connected and obtains said force value with said pressure sensing cell; And obtain the magnitude of voltage that said pressure transducer is exported under the successive force value in the said injector to inject process, the corresponding relation of said force value that gets access to and magnitude of voltage is replaced the force value of said pre-stored and the corresponding relation and the storage of magnitude of voltage.
2. syringe pump pressure automated calibration system according to claim 1 is characterized in that the electric control system of said syringe pump comprises force value acquiring unit, control unit, memory element, wherein,
The force value acquiring unit is electrically connected with said pressure sensing cell, is used to obtain said force value;
Control unit; Be connected with said force value acquiring unit, memory element and pressure transducer, be used for said force value and magnitude of voltage calculated that curve of match is replaced the force value of said pre-stored as reference voltage pressure dependence curve and the corresponding relation of magnitude of voltage is stored in said memory element.
3. syringe pump pressure automated calibration system according to claim 2; It is characterized in that; The mechanical action of said syringe pump partly comprises the motor that is connected with said control unit, and the control instruction that said control unit is imported according to the outside moves to promote said syringe according to the said control end of the said said driven by motor of reference voltage pressure dependence curve controlled does the piston motion.
4. according to claim 2 or 3 described syringe pump pressure automated calibration systems; It is characterized in that; The electric control system of said syringe pump also comprises the alarm unit that is connected with said control unit; When the said magnitude of voltage that obtains in real time in the said injector to inject process and the relation curve of force value gained departed from said reference voltage pressure dependence curve, said control unit was controlled said alarm unit and is given the alarm.
5. a syringe pump pressure automatic calibrating method is characterized in that, may further comprise the steps:
Detect the force value of the water side of said syringe in injection process;
Gather the said successive force value corresponding voltage value that produces in the process of said syringe according to the corresponding relation injection of the force value of pre-stored and magnitude of voltage;
The corresponding relation of said force value that collects and magnitude of voltage is replaced the force value of said pre-stored and the corresponding relation and the storage of magnitude of voltage.
6. syringe pump pressure automatic calibrating method according to claim 5 is characterized in that, the step of the magnitude of voltage in the said injector to inject process of said collection under each said force value comprises:
Obtain said force value;
Said force value that gets access to and magnitude of voltage are calculated curve of match as reference voltage pressure dependence curve.
7. syringe pump pressure automatic calibrating method according to claim 5; It is characterized in that; After step, comprise also that control instruction according to the outside input moves to promote said syringe according to the said control end of the said said driven by motor of reference voltage pressure dependence curve controlled to do the step of piston motion with the storage of the corresponding relation of said force value and magnitude of voltage.
8. syringe pump pressure automatic calibrating method according to claim 5; It is characterized in that the step that the relation curve that also comprises the said magnitude of voltage that obtains in real time in the said injector to inject process and force value gained gives the alarm when departing from said reference voltage pressure dependence curve.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108030967A (en) * | 2017-12-15 | 2018-05-15 | 惠州市爱尼宝母婴用品有限公司 | The method stablized for breast pump suction |
| CN109432552A (en) * | 2018-09-28 | 2019-03-08 | 中国船舶重工集团公司第七六研究所 | The dynamic pressure detection system and method for oral anesthestia injecting systems |
| DE102018108203A1 (en) * | 2018-04-06 | 2019-10-10 | Fresenius Medical Care Deutschland Gmbh | Method for calibrating a syringe pump, syringe pump and devices |
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| US20100094229A1 (en) * | 2003-02-21 | 2010-04-15 | Smith & Nephew, Inc. | Spinal fluid introduction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108030967A (en) * | 2017-12-15 | 2018-05-15 | 惠州市爱尼宝母婴用品有限公司 | The method stablized for breast pump suction |
| DE102018108203A1 (en) * | 2018-04-06 | 2019-10-10 | Fresenius Medical Care Deutschland Gmbh | Method for calibrating a syringe pump, syringe pump and devices |
| CN112041005A (en) * | 2018-04-06 | 2020-12-04 | 费森尤斯医疗护理德国有限责任公司 | Method for calibrating a syringe pump, syringe pump and device |
| CN112041005B (en) * | 2018-04-06 | 2023-04-18 | 费森尤斯医疗护理德国有限责任公司 | Method for calibrating a syringe pump, syringe pump and device |
| US11931546B2 (en) | 2018-04-06 | 2024-03-19 | Fresenius Medical Care Deutschland Gmbh | Method for calibrating a syringe pump, syringe pump and apparatuses |
| CN109432552A (en) * | 2018-09-28 | 2019-03-08 | 中国船舶重工集团公司第七六研究所 | The dynamic pressure detection system and method for oral anesthestia injecting systems |
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| CN102764469B (en) | 2014-06-25 |
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