|Publication number||CN104569153 A|
|Application number||CN 201410847804|
|Publication date||29 Apr 2015|
|Filing date||31 Dec 2014|
|Priority date||31 Dec 2014|
|Publication number||201410847804.5, CN 104569153 A, CN 104569153A, CN 201410847804, CN-A-104569153, CN104569153 A, CN104569153A, CN201410847804, CN201410847804.5|
|Inventors||李一博, 曾周末, 封皓, 张园, 张玉祥, 刘圆圆|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (12), Classifications (3), Legal Events (3)|
|External Links: SIPO, Espacenet|
技术领域 TECHNICAL FIELD
 本发明属于PCCP道预警监测技术领域，特别是设及一种基于PCCP爆管预警监测信号的船池实验系统。  The present invention belongs to the field of early-warning monitoring technologies PCCP road, especially one set up and burst pipes PCCP based early warning and monitoring system signals boat pond experiments.
背景技术 Background technique
 预应力钢筒混凝±管即PCCP的生产和使用有很长的历史。  Coagulation ± prestressed steel cylinder pipe PCCP namely, the production and use has a long history. 最早设计并制造预应力钢筒混凝±管的是法国邦纳管道公司。 The earliest design and manufacture of prestressed steel cylinder tube coagulation ± France Bonner pipeline company. 到了20世纪40年代，欧美国家也开始纷纷开发和制造预应力钢筒混凝±管。 To the 1940s, European and American countries have begun to develop and manufacture prestressed steel cylinder coagulation ± tube. 美国作为世界上最大的预应力钢筒混凝±管生产和使用国家，到今已经使用的预应力钢筒混凝±管管道的长度长达28000KM，其中最大的预应力钢筒混凝±管道直径达7. 6米。 The United States as the world's largest pre-stressed steel tube coagulation ± pipe production and use of national, prestressed steel cylinder coagulation ± length of tubing has been used up to now 28000KM, one of the largest prestressed steel cylinder coagulation ± pipeline diameter of 7.6 meters.
 传统的预应力钢筒混凝±管防护的主要方法是人工检查，如听声法和人眼观察法。  The traditional method of prestressed steel cylinder main coagulation ± pipe protection is manual inspection, such as listening to the sound of law and the human eye observation. 预应力钢筒混凝±管故障检测的还有远场祸流/变压器禪合（RFEC/TC)，基于水听器的声学检测和声光纤检测（AFO)等方法。 Prestressed steel cylinder coagulation ± tube failure detection also far-field disaster stream / transformer combination Zen (RFEC / TC), acoustic hydrophone to detect acoustic fiber detection (AFO), etc. based methods. RFEC/TC法需要在检测前排空管道内的水，因此会消耗大量的人力和物力。 RFEC / TC Act requires water in front of the empty pipe detection, and therefore consume a large amount of manpower and material resources. 此外，RFEC/TC法是一种离线检验方法，效率较低。 Furthermore, RFEC / TC method is an off-line test method, less efficient. 声光纤检测法是一种高准确度的实时检测方法，但是该方法成本高，且于在役的预应力钢筒混凝±管道很难再安装声光纤，只能应用于新建的管道。 Acoustic fiber assay is a method for real-time detection of high accuracy, but the high cost of this method, and in the Battle of prestressing steel tube coagulation ± pipeline is difficult to install acoustic fiber, can only be applied to the new pipeline. 由于水听器对检测声信号灵敏度高，而且只需要在管道内每隔一定距离布设一个水听器即可，所W基于水听器的检测方法不仅检测精度高而且安装方便。 Since the hydrophone to detect the acoustic signal with high sensitivity, and only requires a certain distance laid a hydrophone to every other in the pipeline, the W detection method based hydrophone to detect not only high accuracy and ease of installation. 该方法相对其他几种检测方法有明显的优势，在预应力钢筒混凝±管道破损检测方面有很广泛的应用前景。 This method compared with other detection methods has obvious advantages, there are a wide range of applications in the coagulation ± prestressed steel cylinder pipe breakage detection.
发明内容 SUMMARY OF THE INVENTION
 为了解决上述问题，本发明的目的在于提供一种基于PCCP爆管预警监测信号的船池实验系统。  In order to solve the above problems, an object of the present invention is to provide an early warning and monitoring based PCCP pipe burst signal boat pond experimental system.
 为了达到上述目的，本发明提供的基于PCCP爆管预警监测信号的船池实验系统包括；水下扬声器、功率放大器、声源播放器、水听器、音频采集卡、采集计算机和电源；其中；水下扬声器为安装在船池中水面之下的音频播放装置，其通过功率放大器与声源播放器相连接；声源播放器为音频信号播放装置，用于生成实验所需要的声信号；功率放大器为音频放大器，用于为水下扬声器提供足够的功率；水听器为安装在船池中水面之下的水下声信号的采集装置，其通过音频采集卡与采集计算机相连接，电源为水听器的电源，其与水听器相连接。  To achieve the above objects, the present invention provides early warning and monitoring based PCCP pipe burst signal test system includes a boat pool; underwater speakers, amplifiers, sound source player, hydrophone, audio capture card, capture computer and power supply ; wherein; underwater speaker audio playback apparatus installed in the ship below the water surface in the pool, which is connected through a power amplifier and a sound source player; sound source player, an audio signal playback apparatus for generating acoustic experiments required signal; a power amplifier for the audio amplifier to provide enough power for the underwater speaker; hydrophone underwater acoustic signal acquisition device is installed in the boat below the water surface in a pool, which is connected via an audio capture card with the acquisition computer Power supply for the hydrophone, which is connected to the hydrophone.
 所述的水下扬声器选用浙江金华天阳电子有限公司生产的JX00A型水下扬声器， 该扬声器由两个直径*高87mm的圆柱组成，重量为1. 6千克，声源数3个，声源方向数为2 个。 Underwater Speaker  of the selection Zhejiang 华天阳 Electronics Co., Ltd. production JX00A underwater speaker which consists of two 87mm diameter * high cylindrical composition, weight of 1.6 kg, the sound source 3 number, the sound source direction is two.
 所述的声源播放器采用一台具有声卡的计算机。 Sound source player , wherein the use of a computer with a sound card.
[000引所述的音频采集卡为USB音频采集卡，其通过USB接口与采集计算机相连接。 [000 cited the audio capture card USB audio capture card, which is connected to the computer via the USB interface and collection.
 本发明提供的基于PCCP爆管预警监测信号的船池实验系统采用结构设计合理、 使用方便、适用性强等优点，能够为后期断丝声信号在PCCP内长距离传播提供实验支持。  The present invention provides PCCP squib based early warning and monitoring signals boat pond experimental system uses a reasonable structure, easy to use, applicability, etc., to provide experimental support for the post-broken wire within the PCCP acoustic signals long distances.
附图说明 Brief Description
 图1为本发明提供的基于PCCP爆管预警监测信号的船池实验系统的结构示意图。  Figure 1 is a schematic view of the invention to provide a structure based PCCP pipe explosion early warning and monitoring signals boat pond experimental system.
 图2为原始断丝声信号波形及滤波之后的断丝波形。  FIG. 2 off Sibo shape to the original sound signal waveform and broken wire after filtering.
 图3为断丝声信号传播衰减曲线图。  FIG. 3 is a broken wire acoustic signal propagation attenuation curve.
具体实施方式 DETAILED DESCRIPTION
 下面结合附图和具体实施例对本发明提供的基于PCCP爆管预警监测信号的船池实验系统进行详细说明。  Next, the drawings and specific embodiments of the present invention to provide early warning and monitoring based PCCP pipe burst signal boat pond experimental system described in detail.
 针对已有技术的情况，本发明人在对PCCP作了大量的前期研究后，提出了基于水听器的PCCP断丝检测系统，其原理是对PCCP道的声信号实时在线检测，识别其中的断丝信号，利用断丝信号实现PCCP道爆管的预警；要监视和识别断丝信号，就必须首先掌握在PCCP道中声信号的传播特点和规律，船池的环境虽然与实际的PCCP道环境有所不同，但是船池也有一定的代表性，在船池实验中，主要针对W下两个方案，第一，测量模拟的断丝声信号在船池中的衰减曲线；第二，测量模拟的单频声信号在船池中的传播衰减曲线。  for the case of the prior art, the present inventors have made a lot after a preliminary study on the PCCP, proposed based hydrophone PCCP broken wire detection system, the principle is the on-line detection of the acoustic signal PCCP tract identify which broken wire signals, the broken wire signal to achieve the warning PCCP channel squib; to monitor and identify the broken wire signal, you must first master the propagation characteristics and laws of PCCP tract acoustic signals, the ship pool environment, although the actual PCCP channel environment is different, but the boat pool also has some representation in the boat pond experiment, two programs aimed at W, first, measuring broken wire analog voice signal attenuation curve boat pool; second measurement analog single-frequency acoustic signal propagation ship pool attenuation curve.
[001引如图1所示，本发明提供的基于PCCP爆管预警监测信号的船池实验系统包括冰下扬声器1、功率放大器2、声源播放器3、水听器4、音频采集卡5、采集计算机6和电源7 ; 其中；水下扬声器1为安装在船池中水面8之下的音频播放装置，其通过功率放大器2与声源播放器3相连接；声源播放器3为音频信号播放装置，用于生成实验所需要的声信号；功率放大器2为音频放大器，用于为水下扬声器1提供足够的功率；水听器4为安装在船池中水面8之下的水下声信号的采集装置，其通过音频采集卡5与采集计算机6相连接，电源7 为水听器4的电源，其与水听器4相连接； [001 primers shown in Figure 1, based on early warning and monitoring PCCP pipe burst signal boat pond system under test including ice speaker of the present invention provides a power amplifier 2, a sound source player, 3, 4 hydrophone, audio capture card 5 , collection computer 6 and a power supply 7; wherein; underwater speaker 1 is mounted on the surface of the water in the pool below the boat 8 audio playback apparatus, which is connected to the sound source via the power amplifier 2 and the player 3; sound source to the audio player 3 underwater hydrophone 4 to be installed in the pool below the surface 8 of the boat; signal playback apparatus for generating a desired acoustic signal experiment; audio amplifier is the power amplifier 2, it is used to provide sufficient power underwater loudspeakers 1 acoustic signal acquisition device, which is connected by a 6 audio capture card 5 and the acquisition computer, power supply hydrophone 7 4, 4 and hydrophones connected;
 水下扬声器1、功率放大器2和声源播放器3为声信号的发送部分，水听器4、音频采集卡5、采集计算机6和电源7为声信号的接收部分；  underwater speaker 1, the power amplifier 2 and the sound source player section 3 to transmit acoustic signals, hydrophone 4, audio capture cards 5, 6, and power acquisition computer 7 to receive a portion of the acoustic signal;
 声信号的发送主要通过功率放大器2和水下扬声器1来实现的，声信号的采集主要是通过音频采集卡5实现的； Send  acoustic signals mainly through the power amplifier 2 and 1 underwater speaker to achieve, acoustic signal acquisition mainly through audio capture card 5 achieved;
[001引所述的水下扬声器1选用浙江金华天阳电子有限公司生产的JX00A型水下扬声器，该扬声器由两个直径*高87mm的圆柱组成，重量为1. 6千克，声源数3个，声源方向数为2个。 [001 underwater speaker cited a selection of the Zhejiang Huatian Yang Electronics Co., Ltd. production JX00A underwater speaker which consists of two 87mm diameter * high cylindrical composition, weight of 1.6 kg, the sound source 3 one, the sound source direction is 2.
 所述的声源播放器3采用一台具有声卡的计算机。  The sound source player 3 uses a computer with a sound card.
 所述的音频采集卡5为USB音频采集卡，其通过USB接口与采集计算机6相连接。 Audio capture card , wherein 5 to USB audio capture card, which is connected with the acquisition computer through the USB interface 6. [002U 本发明提供的基于PCCP爆管预警监测信号的船池实验系统的实验结果： [Based PCCP pipe explosion early warning and monitoring system signals boat pond experiment experimental results 002U present invention provides:
 实验中首先用水下扬声器1播放断丝声信号，并在船池的不同位置对断丝声信号进行测量，原始的断丝声信号时域图及频域图如图2所示；  The first experiments with water at the speaker wires 1 Play-off acoustic signal, and at different locations on the boat pool acoustic signals are measured broken wires, broken wire original acoustic signals in time domain and frequency domain diagram shown in Figure 2;
 从图中可W看到，PCCP的真实断丝声信号的有效时间非常短，只有200毫秒左右。  W can be seen from the figure, the real effective time PCCP broken wire acoustic signal is very short, only about 200 milliseconds.
 表1反映了断丝声信号在船池中传播的结果，从表1中可W看出，尽管断丝声信号在船池中传播100米之后，信号幅度有较大程度的衰减，但是断丝声信号相对于其它噪声声信号还是很明显的。  Table 1 reflects the results of broken wires in the boat pool acoustic signal propagation from W can be seen in Table 1, although broken wires acoustic signal propagation 100 meters after the boat in the pool, there is a greater degree of signal amplitude attenuation, But the broken wire acoustic signal relative to the other noise acoustic signal is still very evident.
 表1断丝声信号在船池中传播的结果  The results in Table 1 broken wire acoustic signal propagating in the boat pool
 图3为断丝声信号传播衰减曲线图，如图3所示的声信号传播衰减曲线说明，首先声信号都是在最初传播的10-20米范围内有很大的衰减，虽然在20米到100米的范围内也有衰减，但是其衰减的幅度已经比较小了。  Figure 3 is a broken wire acoustic signal propagation attenuation curve, acoustic signal propagation attenuation curve as shown in FIG. 3 described first acoustic signals are in the range of 10-20 meters initially spread greatly attenuated, although in the range of 20 meters to 100 meters also have attenuation, but its decay rate has been relatively small.
[002引船池实验的结果表明，断丝声信号在传播100米之后，尽管声信号的幅度有较大的衰减，但是断丝声信号的信噪比还是很明显的，因此为后期断丝声信号在PCCP内长距离传播提供了实验支持。 [002 cited experimental results show that the boat pool, broken wires after acoustic signal propagation 100 meters, although the magnitude of the acoustic signals have a greater attenuation, but broken wire acoustic signal to noise ratio is very obvious, so for the latter broken wire sound signal propagation distances in the PCCP provides experimental support.
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|29 Apr 2015||C06||Publication|
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