CN104764973A - Induction type wiring harness detection system and method - Google Patents
Induction type wiring harness detection system and method Download PDFInfo
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Abstract
本发明涉及一种感应式线束检测系统及检测方法,该系统包括信号发生器、感应接收电路、选频检测电路、音频震荡电路以及LED显示电路,所述信号发生器的输出端与待测线束的一端相连,所述待测线束的另一端连接至所述感应接收电路的输入端,所述感应接收电路的输出端连接至所述选频检测电路的输入端,所述选频检测电路的输出端与所述音频震荡电路的输入端以及LED显示电路的输入端分别连接。本发明通过在待测线束一端通入检测信号,另一端接入感应接收电路进行检测,并利用LED显示电路显示故障,不仅能够确定故障线束,同时能够确定线束中具体某一根导线断开以及断点位置,提高了线束的检测效率和精度。
The invention relates to an inductive wire harness detection system and a detection method. The system includes a signal generator, an inductive receiving circuit, a frequency selection detection circuit, an audio oscillation circuit and an LED display circuit. The output end of the signal generator is connected to the wire harness to be tested One end of the wire harness to be tested is connected to the input end of the induction receiving circuit, the output end of the induction receiving circuit is connected to the input end of the frequency selection detection circuit, and the frequency selection detection circuit The output end is respectively connected with the input end of the audio frequency oscillation circuit and the input end of the LED display circuit. In the present invention, a detection signal is connected to one end of the wire harness to be tested, and the other end is connected to an induction receiving circuit for detection, and the LED display circuit is used to display the fault, so that not only the faulty wire harness can be determined, but also a specific wire in the wire harness is disconnected and The position of the breakpoint improves the detection efficiency and accuracy of the wiring harness.
Description
技术领域technical field
本发明涉及一种感应式线束检测系统及检测方法。The invention relates to an inductive wiring harness detection system and a detection method.
背景技术Background technique
当前,随着我国信息化建设和改造日趋广泛和深入,网络的覆盖已无处不在。各单位及部门局域网涉及到众多的用户,大部分的局域网终端采用的是双绞线布线,在局域网的日常维护中网线的连接状况是必须检查的主要内容之一。目前,市场上已有的网线断点检测仪大多是采用接触式测量法,在检测单线时比较准确,但是对于局域网中的线束的检测则费力、费时,且效率不高;还有一些非接触式的测量仪,如感应检测仪,其在线束的检测中只能确定线束中的某根导线,但是不能确定是线束中的哪一根导线断开(一般网线的线束中有8根导线),在维修中只能更换整根网线。At present, as my country's informatization construction and transformation become increasingly extensive and in-depth, network coverage is ubiquitous. The LANs of various units and departments involve many users. Most of the LAN terminals use twisted pair wiring. In the daily maintenance of the LAN, the connection status of the network cables is one of the main contents that must be checked. At present, most of the existing network cable breakpoint detectors on the market use the contact measurement method, which is relatively accurate when detecting single wires, but it is laborious, time-consuming, and inefficient for the detection of wiring harnesses in LANs; there are also some non-contact measurement methods. Type measuring instruments, such as induction detectors, can only determine a certain wire in the wire harness in the detection of the wire harness, but cannot determine which wire in the wire harness is disconnected (there are generally 8 wires in the wire harness of the network cable) , only the entire network cable can be replaced during maintenance.
因此,如何提供一种能够高效、精确地判断线束中导线的通断并显示其具体位置的感应式线束检测系统及检测方法是本领域技术人员亟待解决的一个技术问题。Therefore, how to provide an inductive wire harness detection system and detection method capable of efficiently and accurately judging whether the wires in the wire harness are on or off and displaying their specific positions is a technical problem to be solved urgently by those skilled in the art.
发明内容Contents of the invention
本发明提供一种感应式线束检测系统及检测方法,以解决上述技术问题。The invention provides an inductive wire harness detection system and detection method to solve the above technical problems.
为解决上述技术问题,本发明提供一种感应式线束检测系统,包括信号发生器、感应接收电路、选频检测电路、音频震荡电路以及LED显示电路,所述信号发生器的输出端与待测线束的一端相连,所述待测线束的另一端连接至所述感应接收电路的输入端,所述感应接收电路的输出端连接至所述选频检测电路的输入端,所述选频检测电路的输出端与所述音频震荡电路的输入端以及LED显示电路的输入端分别连接。In order to solve the above technical problems, the present invention provides an inductive wire harness detection system, including a signal generator, an inductive receiving circuit, a frequency selection detection circuit, an audio oscillation circuit and an LED display circuit. The output terminal of the signal generator is connected to the One end of the wire harness is connected, the other end of the wire harness to be tested is connected to the input end of the induction receiving circuit, the output end of the induction receiving circuit is connected to the input end of the frequency selection detection circuit, and the frequency selection detection circuit The output end of the audio frequency oscillator circuit and the input end of the LED display circuit are respectively connected.
较佳地,所述信号发生器采用单片机。Preferably, the signal generator adopts a single-chip microcomputer.
较佳地,所述感应接收电路为高通频带的放大器。Preferably, the inductive receiving circuit is a high-pass band amplifier.
较佳地,所述选频检测电路为锁相环电路。Preferably, the frequency selection detection circuit is a phase locked loop circuit.
较佳地,所述锁相环电路将对应信号分别转换为逻辑电平信号,并分别驱动所述LED显示电路中的各个LED灯。Preferably, the phase-locked loop circuit converts corresponding signals into logic level signals, and drives each LED lamp in the LED display circuit respectively.
较佳地,所述锁相环电路将各路所述逻辑电平信号转化为全通触发信号,所述全通触发信号触发所述音频震荡电路。Preferably, the phase-locked loop circuit converts each of the logic level signals into an all-pass trigger signal, and the all-pass trigger signal triggers the audio oscillator circuit.
较佳地,所述音频震荡电路为可控双音频震荡器。Preferably, the audio oscillator circuit is a controllable dual audio oscillator.
较佳地,所述感应接收电路的输入端为手持式感应接头。Preferably, the input terminal of the inductive receiving circuit is a hand-held inductive joint.
本发明还提供了一种感应式线束检测方法,采用如上所述的感应式线束检测系统,包括如下步骤:所述信号发生器产生若干路扫描信号频率,并分别接入待测线束对应的导线中,所述感应接收电路将所述待测线束的发射信号感应接收,并放大后送入所述选频检测电路,所述选频检测电路将对应信号分别转换为逻辑电平信号,用于驱动所述音频震荡电路和LED显示电路。The present invention also provides an inductive wire harness detection method, which adopts the above-mentioned inductive wire harness detection system, including the following steps: the signal generator generates several scanning signal frequencies, and respectively connects the wires corresponding to the wire harness to be tested wherein, the inductive receiving circuit inductively receives the transmission signal of the wiring harness to be tested, amplifies it and sends it to the frequency selection detection circuit, and the frequency selection detection circuit converts the corresponding signals into logic level signals respectively for use in Drive the audio oscillator circuit and LED display circuit.
较佳地,所述信号发生器采用单片机产生不同频率的信号,调整该信号的幅度用以设置信号的发射范围,所述感应接收电路的信号接收强度根据所述信号发生器的信号发射范围进行调节。Preferably, the signal generator uses a single-chip microcomputer to generate signals of different frequencies, adjust the amplitude of the signal to set the transmission range of the signal, and the signal reception strength of the induction receiving circuit is determined according to the signal transmission range of the signal generator. adjust.
与现有技术相比,本发明提供的一种感应式线束检测系统及检测方法,该系统包括信号发生器、感应接收电路、选频检测电路、音频震荡电路以及LED显示电路,所述信号发生器的输出端与待测线束的一端相连,所述待测线束的另一端连接至所述感应接收电路的输入端,所述感应接收电路的输出端连接至所述选频检测电路的输入端,所述选频检测电路的输出端与所述音频震荡电路的输入端以及LED显示电路的输入端分别连接。本发明通过在待测线束一端通入检测信号,另一端接入感应接收电路进行检测,并利用LED显示电路显示故障,不仅能够确定故障线束,同时能够确定线束中具体某一根导线断开以及断点位置,提高了线束的检测效率和精度。Compared with the prior art, the present invention provides an inductive wiring harness detection system and detection method, the system includes a signal generator, an inductive receiving circuit, a frequency selection detection circuit, an audio oscillation circuit and an LED display circuit, the signal generation The output end of the sensor is connected to one end of the wire harness to be tested, the other end of the wire harness to be tested is connected to the input end of the induction receiving circuit, and the output end of the induction receiving circuit is connected to the input end of the frequency selection detection circuit , the output end of the frequency selection detection circuit is connected to the input end of the audio frequency oscillation circuit and the input end of the LED display circuit respectively. In the present invention, a detection signal is connected to one end of the wire harness to be tested, the other end is connected to an induction receiving circuit for detection, and the LED display circuit is used to display the fault, not only can determine the faulty wire harness, but also can determine whether a specific wire in the wire harness is disconnected and The location of the breakpoint improves the detection efficiency and accuracy of the wiring harness.
附图说明Description of drawings
图1为本发明一具体实施方式的感应式线束检测系统的结构框图。FIG. 1 is a structural block diagram of an inductive wire harness detection system according to a specific embodiment of the present invention.
图中:10-信号发生器、20-感应接收电路、30-选频检测电路、40-音频震荡电路、50-LED显示电路、60-待测线束。In the figure: 10-signal generator, 20-inductive receiving circuit, 30-frequency selection detection circuit, 40-audio oscillation circuit, 50-LED display circuit, 60-wire harness to be tested.
具体实施方式Detailed ways
为了更详尽的表述上述发明的技术方案,以下列举出具体的实施例来证明技术效果;需要强调的是,这些实施例用于说明本发明而不限于限制本发明的范围。In order to describe the technical solution of the above invention in more detail, specific examples are listed below to demonstrate the technical effect; it should be emphasized that these examples are used to illustrate the present invention and not limit the scope of the present invention.
本发明提供的一种感应式线束检测系统,如图1所示,包括信号发生器10、感应接收电路20、选频检测电路30、音频震荡电路40以及LED显示电路50,所述信号发生器10的输出端与待测线束60的一端相连,所述待测线束60的另一端连接至所述感应接收电路20的输入端,所述感应接收电路20的输出端连接至所述选频检测电路30的输入端,所述选频检测电路30的输出端与所述音频震荡电路40的输入端以及LED显示电路50的输入端分别连接。本发明通过在待测线束60一端通入检测信号,另一端接入感应接收电路20进行检测,并利用LED显示电路50显示故障,不仅能够确定故障线束,同时能够确定线束中具体某一根导线断开以及断点位置,提高了线束的检测效率和精度。除此之外,该感应式线束检测系统也可对其他类型的导线线束进行精确的测量。An inductive wire harness detection system provided by the present invention, as shown in FIG. The output end of 10 is connected to one end of the wire harness 60 to be tested, the other end of the wire harness 60 to be tested is connected to the input end of the induction receiving circuit 20, and the output end of the induction receiving circuit 20 is connected to the frequency selection detection The input end of the circuit 30 , the output end of the frequency selection detection circuit 30 are respectively connected with the input end of the audio oscillation circuit 40 and the input end of the LED display circuit 50 . In the present invention, a detection signal is connected to one end of the wire harness 60 to be tested, and the other end is connected to the induction receiving circuit 20 for detection, and the LED display circuit 50 is used to display the fault, so that not only the faulty wire harness can be determined, but also a specific wire in the wire harness can be determined The disconnection and the breakpoint position improve the detection efficiency and accuracy of the wiring harness. In addition, the inductive wire harness inspection system can also perform accurate measurements on other types of wire harnesses.
较佳地,所述信号发生器10采用单片机,以每个待测线束60中有8根导线为例,单片机产生f1-f8不同频率的信号,对应接入到待测线束60的8根导线中(线序与频率对应),其中,导线就相当于发射天线。Preferably, the signal generator 10 adopts a single-chip microcomputer. Taking 8 wires in each wire harness 60 to be tested as an example, the single-chip microcomputer generates signals of different frequencies f1-f8, which correspond to the 8 wires connected to the wire harness 60 to be tested. In (the line sequence corresponds to the frequency), the wire is equivalent to the transmitting antenna.
较佳地,所述感应接收电路20为高通频带的放大器,具体为高频小信号放大器,用于信号的接收及放大。Preferably, the inductive receiving circuit 20 is a high-pass band amplifier, specifically a high-frequency small-signal amplifier, for receiving and amplifying signals.
较佳地,所述选频检测电路30为锁相环电路,在待测线束60正常(无断线)时,感应接收电路20输入的信号中包含了所有的对应频率信号,锁相环电路将对应频率信号分别转换为逻辑电平信号,分别驱动和开通LED显示电路50中的各个LED灯;同时将各路逻辑电平信号转换为全通触发信号,该全通触发信号触发、开通音频振荡电路40,较佳地,所述音频震荡电路40为可控双音频震荡器,当待测线束60正常时发出双音频信号,表示待测线束60正常;Preferably, the frequency selection detection circuit 30 is a phase-locked loop circuit. When the wire harness 60 to be tested is normal (no disconnection), the signal input by the induction receiving circuit 20 includes all corresponding frequency signals, and the phase-locked loop circuit Convert the corresponding frequency signals into logic level signals respectively, drive and turn on each LED lamp in the LED display circuit 50 respectively; at the same time convert each logic level signal into an all-pass trigger signal, and the all-pass trigger signal triggers and turns on the audio Oscillating circuit 40, preferably, the audio oscillating circuit 40 is a controllable dual-tone oscillator, and when the wiring harness 60 to be tested is normal, a dual-tone signal is sent out, indicating that the wiring harness 60 to be tested is normal;
若待测线束60中有一根或若干根导线断线,则感应接收电路20中就会缺少一个或若干个对应频率信号,LED显示电路50发出导线故障提示;同时也不会有全通触发信号输出,音频震荡电路40的扬声器无提示音,提示导线故障点,可直接进行合理的维修和重排,节约时间和成本。If one or several wires are disconnected in the wiring harness 60 to be tested, one or several corresponding frequency signals will be lacking in the induction receiving circuit 20, and the LED display circuit 50 will send out a wire fault prompt; meanwhile, there will be no all-through trigger signal Output, the speaker of the audio oscillating circuit 40 has no prompt sound, which prompts the fault point of the wire, and can directly perform reasonable maintenance and rearrangement, saving time and cost.
较佳地,所述感应接收电路20的输入端为手持式感应接头,将手持式感应接头在待测线束60上移动,即可实现导线断开检测,并能够确定导线的断点位置。Preferably, the input terminal of the sensing receiving circuit 20 is a hand-held sensing joint, and the hand-held sensing joint is moved on the wire harness 60 to be tested to realize wire disconnection detection and determine the breakpoint position of the wire.
本发明还提供了一种感应式线束检测方法,采用如上所述的感应式线束检测系统,包括如下步骤:所述信号发生器10产生若干路扫描信号频率,并分别接入待测线束60对应的导线中,所述感应接收电路20将所述待测线束60的发射信号感应接收,并放大后送入所述选频检测电路30,所述选频检测电路30将对应信号分别转换为逻辑电平信号,用于驱动所述音频震荡电路40和LED显示电路50。The present invention also provides an inductive wire harness detection method, which adopts the above-mentioned inductive wire harness detection system, comprising the following steps: the signal generator 10 generates several scanning signal frequencies, and respectively connects the wire harness 60 to be tested to correspond to In the wires, the inductive receiving circuit 20 inductively receives the transmission signal of the wire harness 60 to be tested, amplifies it and sends it to the frequency selection detection circuit 30, and the frequency selection detection circuit 30 converts the corresponding signals into logic The level signal is used to drive the audio oscillator circuit 40 and the LED display circuit 50 .
较佳地,所述信号发生器10采用单片机产生不同频率的信号,调整该信号的幅度用以设置信号的发射范围,所述感应接收电路20的信号接收强度根据所述信号发生器10的信号发射范围进行调节。Preferably, the signal generator 10 uses a single-chip microcomputer to generate signals of different frequencies, and adjusts the amplitude of the signal to set the transmission range of the signal. The emission range is adjusted.
需要说明的是,感应接收电路20检测线束没有问题时,只能说明线束中所有的导线是连通的,但是不一定线序是对的。It should be noted that when the induction receiving circuit 20 detects that there is no problem with the wiring harness, it only means that all the wires in the wiring harness are connected, but the wiring sequence is not necessarily correct.
对于新的线束连接,除检测通断外,还有必要检测线序。在待测线束60两端分别接入信号发生器10的线序检测输出口,以及手持感应检测接头的输入口,观察两边的LED点亮的顺序来确定网线中线序是否正确。此部分原理及结构与普通线束检测仪类似,此处不再赘述。For new wiring harness connections, in addition to detecting on-off, it is also necessary to detect the wire sequence. Connect the line sequence detection output port of the signal generator 10 and the input port of the hand-held induction detection connector to both ends of the wire harness 60 to be tested, and observe the order in which the LEDs on both sides are lit to determine whether the line sequence in the network cable is correct. The principle and structure of this part are similar to those of ordinary wire harness testers, and will not be repeated here.
另外,在对原有的线束进行故障检测时,一般不需要进行线序检测,只要迅速地找到网线以及判断该网线的通断情况即可。In addition, when performing fault detection on the original wiring harness, it is generally not necessary to perform line sequence detection, as long as the network cable is quickly found and the on-off status of the network cable is judged.
综上所述,本发明提供的一种感应式线束检测系统及检测方法,该系统包括信号发生器10、感应接收电路20、选频检测电路30、音频震荡电路40以及LED显示电路50,所述信号发生器10的输出端与待测线束60的一端相连,所述待测线束60的另一端连接至所述感应接收电路20的输入端,所述感应接收电路20的输出端连接至所述选频检测电路30的输入端,所述选频检测电路30的输出端与所述音频震荡电路40的输入端以及LED显示电路50的输入端分别连接。本发明不需要两端接线,只通过在待测线束60一端通入检测信号,另一端通过手持感应检测接头进行检测,并利用LED显示电路50显示故障,不仅能够确定故障线束,同时能够确定线束中具体某一根导线断开以及断点位置,提高了线束的检测效率和精度,且使用方便、快捷、准确。In summary, the present invention provides an inductive wire harness detection system and detection method, the system includes a signal generator 10, an inductive receiving circuit 20, a frequency selection detection circuit 30, an audio oscillation circuit 40 and an LED display circuit 50, the The output end of the signal generator 10 is connected to one end of the wire harness 60 to be tested, the other end of the wire harness 60 to be tested is connected to the input end of the induction receiving circuit 20, and the output end of the induction receiving circuit 20 is connected to the The input end of the frequency selection detection circuit 30, the output end of the frequency selection detection circuit 30 is respectively connected with the input end of the audio oscillation circuit 40 and the input end of the LED display circuit 50. The present invention does not require wiring at both ends, and only passes through the detection signal at one end of the wire harness 60 to be tested, and detects the other end through a hand-held induction detection joint, and uses the LED display circuit 50 to display the fault, not only can determine the faulty wire harness, but also can determine the wiring harness The disconnection of a certain wire and the location of the breakpoint in the wire harness improve the detection efficiency and accuracy of the wire harness, and are convenient, fast and accurate to use.
显然,本领域的技术人员可以对发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包括这些改动和变型在内。Obviously, those skilled in the art can make various changes and modifications to the invention without departing from the spirit and scope of the invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and equivalent technologies thereof, the present invention also intends to include these modifications and variations.
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