WO2007124786A1

WO2007124786A1 - Sensor for a building control system, a building control system and method for controlling actuators in a building control system

Info

Publication number: WO2007124786A1
Application number: PCT/EP2006/069923
Authority: WO
Inventors: Michael Ernst
Original assignee: Siemens Aktiengesellschaft
Priority date: 2006-05-02
Filing date: 2006-12-19
Publication date: 2007-11-08
Also published as: DE102006020121A1

Abstract

Scenes are nominal states which actuators (12, 14, 16) are intended to bring about in a building with the control system. In the prior art, scenes are initiated by pushing a button, which causes a so-called scene message to be emitted. The invention now provides a sensor (10) with the capability to emit scene messages. Scenes are defined on the basis of environmental situations which correspond to specific values of a measured environmental state variable, or its development over time.

Description

description

Sensor for a building control system, building control system and method for controlling actuators in a building control system

The invention relates to a sensor for a building control system. It also relates to a building control system having such a sensor and to a method of controlling actuators in a building control system.

Sensors are widely used in building control systems. Twilight sensors (which are essentially brightness sensors) detect the onset of dusk. They influence the shutter actuators. At dawn, the shutters should be lowered. They also affect the lighting actuators. When twilight occurs, the outdoor lighting should be switched on. Wind sensors cause a strong wind in wind-blown shutters or a down driving shutters to protect the windows. When smoke is detected, smoke detectors cause the blinds to be raised to clear escape routes and the lighting to be switched on.

A single sensor can thus be associated with a plurality of actuators. So far, the sensor must deliver targeted Aktorenbe ^¬ failures.

It is known only from pushbuttons (also referred to as pushbutton sensors, ie sensors which do not measure environmental state variables) that a so-called scene telegram is triggered by pressing the pushbuttons. The button is programmed so that exactly one button triggers a so-called scene. A scene is defined by selecting a number of the actuators from the total number of actuators and specifying which state is to be caused by the actuators. For example, there is a so-called scene "absence of the inhabitants of the house." In this scene will be For example, shut down the blinds, turned off all the lights in the house and possibly the heating ^{herunterge ¬} down. The scene here corresponds not necessarily limited hours ^¬ th actuators commands. For example, individual blinds may have already been shut down. If the actuator determines that the state predetermined by the actuator scene already exists, the actuator does not have to be active at all. Notes the actor that the state does not yet exist (ie presently Yes ^¬ lousien not shut down are), the actuator is activated. The scene telegram is thus a telegram in which only the result is communicated. The actuators are taught in for different scenes. Get telegram with the message "Scene 1", the scenes ^¬, they represent the learned to the scene 1 Condition ago. Nentelegramm get the sce- with the message "Scene 2" they represent the learned to the scene two state it etc.

It is an object of the invention to further improve the building control systems of the prior art. In particular, they should be of compact construction, be space-saving and inexpensive, yet function reliably.

The object is achieved by a sensor according to claim 1, a building control system according to claim 5 and a method for controlling actuators in a building control system according to claim 6.

Thus, a sensor is provided assurance system for Gebäudesteue ^¬ which:

measures at least one environmental state variable, and at least one environmental situation in each case assigns a scene ^¬ net, the environmental situation by the value of the measured environmental state variable or its temporal evolution is defined, and which is designed in response to an environmental situation that is associated with a scene to deliver a scene telegram so as to control actuators, in which is fixed to the scene to be produced by the actuators state.

The invention is based on the recognition that the experiences made with buttons which emit scene telegrams can also be transmitted to sensors which measure environmental state variables (that is, sensors in the strict sense). A scene is thus no longer triggered by a Benut ^¬ zer by pressing the button, but automatically when a certain environmental situation. The invention makes use of the fact that the sensors according to the prior art already had to use threshold criteria in order to define certain environmental situations (eg brightness threshold value when twilight sets in) and thus have an intelligent computer module.

However, the intelligence of the sensors does not have to be expanded on its own. Should the sensors for each environmental situ ation ^¬ Make specific actuators commands as possible ^¬ would be needed an expensive hardware for the sensors. This is omitted in the invention. The scene telegrams to clarify this are simple telegrams, which usually contain only one scene name. In particular, they do not contain separate actor commands.

In a preferred embodiment of the invention, the sensor is designed to send out to the scene a teach-in scene telegram to the actuators. This can be triggered, for example, by pressing a teach-in button on the sensor. In this way, simple programming is possible. The actuators are manually set to a specific state, and in this predetermined state then the teach-in scene telegram is delivered. As a result, the actuators learn that the state currently being established sets the scene.

The determination of the environmental situation, which is in each case assigned to a scene, can also be carried out in the manner of programming. user-defined. In the prior art, there are already sensors for setting threshold values for this purpose on sensors.

The sensor may be a brightness sensor, a temperature sensor, a humidity sensor or a wind sensor or combine several of the functions mentioned at the same time. Of course, other types of sensors can also be equipped according to the invention.

The building control system according to the invention has at least one sensor according to the invention and at least one actuator in which a response to a scene telegram is defined for at least one scene assigned in the sensors of an environmental situation. In this case, "reaction" is understood to mean that the actuator establishes a predetermined state or remains inactive if the predetermined state already exists.

The inventive method for controlling actuators in a building control system with sensors and actuators comprises that the sensors (which should be equipped according to the invention) at predetermined predetermined environmental situations each submit a scene telegram to which an actuators scene is defined, so at least one of the Actors scene before ^¬ certain part of the actuators to cause a predetermined by the actor scene state to cause.

Hereinafter, a preferred embodiment of the inven ^¬ tion is described with reference to the drawing, wherein the

FIG illustrates the definition of scenes based on an exemplary building control system.

A schematically unillustrated in the figure Gebäudesteue ^¬ assurance system includes a sensor 10, which is to be a light sensor (light sensor) present, an actuator 12 for a blind, an actuator 14 for light, and an actuator 16 for the heating in the building. The sensor 10 comprises (not shown) the actual sensor and an evaluation unit, which evaluates measured values from the sensor. Due to a threshold criterion, the sensor 10 recognizes the onset of dusk, both evening dusk and dawn. The criterion for the aft-dusk is to fall below a certain brightness value for a predetermined period of time (typically from 10 minutes to 15 minutes). By definition, the sensor 10 detects the dawn when a predetermined threshold is exceeded for a predetermined period of time. In the present case, the actuators 12, 14 and 16 are each active at dusk. Here are two scenes are defined, Scene 1 (dusk) and the scene 2 (morning dawn ^¬). The symbols 18 to 28 represent the states corresponding to the definition of the scenes to be brought about by the actuators 12 to 16. The symbol 18 illustrates that according to scene 1, the blind should be up. The symbol 20 illustrates that according to scene 2, the blind should be lowered. These definitions correspond to the function of the blind that they should ward off the sun's rays. (The blind is especially not a roller shutter, which at dusk then close exactly the opposite and at dawn if necessary to open.)

The symbol 22 illustrates that Scene 1 (Abenddäm ^¬ merung) is to turn on the light in accordance with, and the symbol 24 illustrates, scene 2 is turn off the light in accordance with that.

The symbol 26 illustrates that according to scene 1, ie at dusk, the heater is to be shut down to 50% power and symbol 28 illustrates that according to scene 2 the heater is ramped up to 100% power once dawn occurs.

The symbols 18 to 28 each illustrate the Sollzu ^{¬ state} of Venetian blind, light and heating. This is not a Aktorbe ^¬ fail, because an actuator command causes the blind, which is lowered, is raised or a pulled up Shutter is shut down. The present case may be, though, that a scene is requested, and the state is already ^¬ he can see. Then, of course, the actor no longer has to take action. The actuators 12, 14 and 16 are accordingly designed to (programmed) to be state compare and then predetermined by the scene state to set the target state of its "Whether ^¬ jekts" (blinds, lamp heating system) with the.

In the present case, the scenes must first be defined as represented by the symbols. On the sensor 10, a radio ^¬ functionality 30 for storing the scene 1 and a Funktiona ^¬ quality 32 for storing the scene 2 is provided. In ^¬ example, it may be buttons on the sensor 10, which must be pressed to save the scenes. The actuators 12, 14 and 16 are first placed in the state defined in the symbols 18, 22 and 26, and at the same time the functionality 30 is activated. The sensor 10 outputs a scene telegram here. A scene telegram contains the name of the scene and, if applicable, a "hint" for the actuators 12, 14, 16 that it is a teach-in telegram (see the caption "Save scene 1" in the figure). As a result, actuators 12, 14 and 16 are "made aware" of what scene 1 looks like, ie they are taught in on scene 1. Subsequently, the ^{status is established} according to symbols 20, 24 and 28, and functionality 32 is activated. They provide a scene telegram with the name of the scene 2 (see label "Save the scene 2" in the figure) corresponds and the actuators 12, 14 and 16 to learn so that the target state of its object Sze ^¬ ne. 2

The sensors are now constantly measuring an environmental status variable. In the present case, it is the external brightness. Undershoots this outer brightness for more than 10 minutes a predetermined value, causes the wiring or the structure of the sensor 10 (which in the present case üblicherwei ^¬ se a voltage hysteresis passes), the sensor 10 gets scene 1 (see functionality 34). To retrieve scene 1, it is sufficient to submit a scene telegram with the name of scene 1. The actuators 12, 14 and 16 recognize the scene name and produce the state defined by the symbols 18, 22 and 26.

The next morning the dawn comes. The external brightness exceeds for a predetermined time period ei ^¬ NEN threshold value, and the sensor 10 activates the functionalization did 36, ie it causes the scene 2 from. For this purpose, it is sufficient to submit a scene telegram with the name of scene 2. The actuators 12, 14 and 16 receive this telegram and, on the basis of the scene name, recognize that they must set the state according to the symbols 20, 24, 28.

The invention provides for the first time a sensor capable of delivering scene telegrams. In the example of a brightness sensor given here, the two scenes "dusk" and "dawn" can be defined naturally. An implementation of the invention also takes place when only a single scene is defined. A Tempe ^¬ ratursensor which measures the outside temperature, can fetch a far greater number of scenes also in a more complicated manner, for example, the heating precisely set to match the outside temperature. For this purpose, the temperature could be classified as a measured environmental state variable in a plurality of sub-intervals, wherein a scene is definable for each sub-interval. In particular, the sensor can also take into account the development over time of the environmental status. This is z. B. useful in a humidity sensor. For example, after a rain, it measures high humidity, but it does not change. In a rain, however, the humidity changes, so that when a short-term change in the humidity z. B. a roller shutter could be lowered to protect the windows from the rain. The sensor according to the invention can also measure a plurality of environmental state variables and accordingly comprise a plurality of sensor units which interact.

Claims

claims

1. sensor (10) for a building control system, which measures at least one environmental state variable, and - at least one environmental situation each zuord ^¬ net, the environmental situation is defined by the value of the measured environmental state variable or its temporal evolution, and which is designed to in response to an event subsequent environmental situation associated with a scene, a Sze ^¬ nentelegramm dispense so as actuators (12, 14, 16) to control, in which to the scene set a be manufactured by the actuators (12, 14, 16) condition is.

2. Sensor (10) according to claim 1, wherein the scene telegram contains only one scene name and therefore no separate actuator commands.

3. Sensor (10) according to claim 1 or 2, which is adapted to send to the scene a teach-in scene telegram to the actuators and preferably a teach-in button (30, 32) on ^¬ has, by the pressures of the transmission of Einlerntelegramms is triggered ,

4. Sensor according to one of the preceding claims, which is a brightness sensor, a temperature sensor, a humidity sensor and / or a wind sensor.

5. building control system, with at least one sensor (10) according to one of claims 1 to 4, and with at least one Ak ^¬ tor (12, 14, 16) in the at least one assigned in the sensors of an environmental situation a reaction to a scene telegram is fixed.

6. A method for controlling actuators in a building control system with sensor (10) and actuators (12, 14, 16), in which the sensors emit a scene telegram each time a predetermined environmental situation occurs, to which an actuators scene is defined so as to at least one predetermined by the actor scene part of the actuators (12, 14, 16) to induce a predetermined by the actor scene state ^¬ verlassen.