Broken wire monitoring device

Abstract

The invention discloses a broken line monitoring device, and relates to the field of cable detection, the broken line monitoring device comprises an indication module, a frequency generator, a conditioning module and an induction electrode, and the indication module, the frequency generator, the conditioning module and the induction electrode are connected through electrical connection lines. The first induction electrode and the second induction electrode are tightly attached to the two ends of the cable to be detected respectively, an electric signal is generated by the frequency generator, the signal is amplified through the first conditioning module and output to the first induction electrode, the amplified signal is received by the second induction electrode and returned to the second conditioning module, and the signal is amplified and transmitted to a single-chip microcomputer pin. Signals are transmitted between the first induction electrode and the second induction electrode, an electromagnetic induction effect is formed between the first induction electrode and the second induction electrode and the cable to be detected, the single-chip microcomputer can judge whether a disconnection state exists between the two electrodes or not according to different signal return values of the second conditioning module, on-off of a line can be detected in a lossless and non-electric mode, and on-off of the cable can be monitored conveniently.

Description

Technical Field

[0001] The invention relates to the field of cable detection, and in particular to a cable break monitoring device. Background Art

[0002] Cable is an electrical energy or signal transmission device, usually composed of several or several groups of wires, and has the characteristics of internal current conduction and external insulation. Cable can be used to transmit electromagnetic energy and information, and realize the conversion between electromagnetic energy. It is widely used in urban underground power grids, power station lead-out lines, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas.

[0003] Cables are an important part of the power network. The continuity of cables determines whether the power network can operate normally, so cable disconnection monitoring has become a top priority. Currently, inductive detection is mostly used in the market for cable disconnection detection. The cable needs to be powered on for testing, which increases the difficulty of cable continuity detection and causes power loss. However, there are also non-destructive detection methods that do not require power. Usually, specific detection instruments are required to detect the cables. The detection instruments are cumbersome to operate, increase the cost of use, and are not convenient for monitoring the continuity of the cables. Summary of the invention

[0004] The object of the present invention is to provide a wire break monitoring device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a line break monitoring device, comprising an indication module, a frequency generator, a conditioning module and a sensing electrode, wherein the indication module, the frequency generator, the conditioning module and the sensing electrode are connected via an electrical connection line, the indication module is used to control the frequency generator and the conditioning module and display the data, the frequency generator is used to set the corresponding frequency output, the conditioning module is used to filter and amplify the signal and transmit the signal to the indication module, and the sensing electrode is used to be close to the cable to be detected and monitor the continuity of the cable.

[0006] Preferably, the indication module comprises:

[0007] A single chip microcomputer, the single chip microcomputer is connected to the frequency generator through an electrical connection line, and the single chip microcomputer is used to monitor the signal of the sensing electrode;

[0008] A display module, the display module is electrically connected to the single chip computer, and the display module is used to display the signal data of the sensing electrode;

[0009] A key module is electrically connected to the single-chip computer and is used to adjust the frequency generated by the frequency generator.

[0010] Preferably, the conditioning module comprises:

[0011] A conditioning module 1, the conditioning module 1 is electrically connected to the frequency generator, and the conditioning module 1 is used to filter and amplify the signal sent by the frequency generator;

[0012] The second conditioning module is electrically connected to the single chip microcomputer and is used to amplify the signal of the sensing electrode and transmit the signal to the single chip microcomputer.

[0013] Preferably, the sensing electrode comprises:

[0014] A sensing electrode 1, wherein the sensing electrode 1 is electrically connected to a conditioning module 1, and the sensing electrode 1 is used to transmit a frequency signal;

[0015] The second sensing electrode is electrically connected to the second conditioning module and is used to receive the signal sent by the first sensing electrode.

[0016] Preferably, a capacitor C171 and a capacitor C173 are respectively provided on one side of the single chip computer, and the capacitor C171 and the capacitor C173 are respectively electrically connected to the pins of the single chip computer.

[0017] Preferably, the conditioning module 1 is composed of transistor 1, capacitor C172, resistor R114, resistor R117 and resistor R118, and the transistor 1, capacitor C172, resistor R114, resistor R117 and resistor R118 are electrically connected.

[0018] Preferably, the conditioning module 2 is composed of transistor 2, capacitor C178, resistor R122, resistor R123, resistor R124 and resistor R126, and the transistor 2, capacitor C178, resistor R122, resistor R123, resistor R124 and resistor R126 are electrically connected.

[0019] Preferably, the first sensing electrode is attached to one end of the cable to be detected, and the second sensing electrode is attached to the other end of the cable to be detected, and the first sensing electrode and the second sensing electrode are used for signal transmission.

[0020] Preferably, the frequency generator is used to generate a signal source with a fixed frequency accuracy, and the frequency generator is composed of a crystal oscillator and a post-amplifier. The crystal oscillator generates a highly stable frequency oscillation signal, which is amplified by the post-amplifier to reach a set amplitude.

[0021] Preferably, a method for using a disconnection monitoring device comprises the following steps:

[0022] Step S1: placing the first sensing electrode and the second sensing electrode in close contact with the two ends of the cable to be tested respectively;

[0023] Step S2: After the monitoring device system is powered on, the frequency generator is controlled according to the configuration or key module to set the corresponding frequency output;

[0024] Step S3: The signal generated by the frequency generator is amplified by the conditioning module 1 and output to the sensing electrode 1;

[0025] Step S4: The signal sent by the sensing electrode 1 is returned to the conditioning module 2 through the sensing electrode 2, and is input to the ADC pin of the single-chip microcomputer after amplification and filtering, and the signal data is displayed on the display module;

[0026] Step S5: The single-chip microcomputer can determine that there is a disconnection between the two electrodes based on the different signal return values ​​of the conditioning module 2. When the cable is not broken, the single-chip microcomputer receives the signal return value 1. When the cable is broken, the single-chip microcomputer receives the signal return value 2. When the return value 1 and the return value 2 are different, it is determined that there is a disconnection between the cables to be detected, and the signal return value is displayed on the display module.

[0027] Technical effects and advantages of the present invention:

[0028] The present invention utilizes a setting mode in which an indication module, a frequency generator, a conditioning module and a sensing electrode are matched. By respectively placing a sensing electrode 1 and a sensing electrode 2 in close contact with two ends of a cable to be tested, an electrical signal is generated by a frequency generator, the signal is amplified by the conditioning module 1 and output to the sensing electrode 1, the amplified signal is received by the sensing electrode 2, and returned to the conditioning module 2, the signal is amplified and filtered, and transmitted to an ADC pin of a single-chip microcomputer. The single-chip microcomputer can judge whether there is a disconnection state between the two electrodes according to different signal return values ​​of the conditioning module 2. The signal is transmitted between the sensing electrode 1 and the sensing electrode 2, and an electromagnetic induction effect is formed between the cable to be tested. When the cable is not disconnected, the single-chip microcomputer receives a return value 1 of the signal. When the cable is disconnected, the single-chip microcomputer receives a return value 2 of the signal. If the return value 1 and the return value 2 are different, it means that a disconnection occurs between the cables to be tested, and lossless and non-electric detection of line disconnection can be satisfied. The invention has the advantages of low cost and simple manufacturing, and is convenient for monitoring the disconnection of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the structure of the monitoring device of the present invention.

[0030] Figure 2 It is a structural schematic diagram of the indicator module of the present invention.

[0031] Figure 3 It is a circuit diagram of the conditioning module of the present invention.

[0032] Figure 4 It is a circuit diagram of the single chip microcomputer of the present invention.

[0033] Figure 5 The figure is a circuit diagram of a conditioning module of the present invention.

[0034] Figure 6 It is a schematic diagram of the second circuit of the conditioning module of the present invention.

[0035] Figure 7 The figure is a flow chart of the method for using the monitoring device of the present invention. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention provides Figure 1-6 A line break monitoring device shown includes an indication module, a frequency generator, a conditioning module and a sensing electrode. The indication module, the frequency generator, the conditioning module and the sensing electrode are connected via an electrical connection line. The indication module is used to control the frequency generator and the conditioning module and display data. The frequency generator is used to set the corresponding frequency output. The frequency generator model is a signal generator frequency LCD digital module such as BYS459-1500. The conditioning module is used to filter and amplify the signal and transmit the signal to the indication module. The sensing electrode is used to approach the cable to be detected and monitor the continuity of the cable. A loop structure is formed between the indication module, the frequency generator, the conditioning module and the sensing electrode. The signal is transmitted between the indication module, the frequency generator, the conditioning module and the sensing electrode. The electromagnetic induction effect between the cable to be detected and the sensing electrode is used to monitor the continuity of the cable.

[0038] Specifically, the indication module includes a single-chip microcomputer, a display module and a key module. The single-chip microcomputer is connected to the frequency generator through an electrical connection line. The single-chip microcomputer is used to monitor the signal of the sensing electrode. The single-chip microcomputer signal, such as AD9833DRMZ, is used to adjust the frequency generator and judge the signal return value of the monitoring device. When the cable is not broken, the single-chip microcomputer receives a return value of one of the signal. When the cable is broken, the single-chip microcomputer receives a return value of two of the signal. If the return value one and the return value two are different, it means that a break occurs between the cables to be detected. The display module is electrically connected to the single-chip microcomputer. The display module is used to display the signal data of the sensing electrode. The frequency and signal return value of the monitoring device are displayed through the display module, and the on-off result of the cable to be detected is displayed. The key module is electrically connected to the single-chip microcomputer. The key module is used to adjust the frequency generated by the frequency generator.

[0039] Furthermore, the conditioning module includes a conditioning module 1 and a conditioning module 2. The conditioning module 1 is electrically connected to the frequency generator, and the conditioning module 1 is used to filter and amplify the signal emitted by the frequency generator. The conditioning module 2 is electrically connected to the single-chip microcomputer, and the conditioning module 2 is used to amplify the signal of the sensing electrode and transmit the signal to the single-chip microcomputer. The signal generated by the frequency generator is transmitted to the conditioning module 1, and the signal is filtered and amplified by the conditioning module 1, and the signal is transmitted to the sensing electrode 1, and the signal is amplified by the conditioning module 2, and the amplified signal is transmitted to the single-chip microcomputer.

[0040] Furthermore, the sensing electrode includes a sensing electrode 1 and a sensing electrode 2, the sensing electrode 1 is electrically connected to the conditioning module 1, the sensing electrode 1 is used to transmit the frequency signal, the sensing electrode 2 is electrically connected to the conditioning module 2, the sensing electrode 2 is used to receive the signal sent by the sensing electrode 1, and by closely fitting the sensing electrode 1 and the sensing electrode 2 to the cable to be detected, the signal is transmitted between the sensing electrode 1 and the sensing electrode 2, and an electromagnetic induction effect is formed between the cable to be detected, when the cable is not broken, the single-chip microcomputer receives a return value 1 of the signal, and when the cable is broken, the single-chip microcomputer receives a return value 2 of the signal, if the return value 1 and the return value 2 are different, it means that a break occurs between the cables to be detected, and capacitors C171 and C173 are respectively provided on one side of the single-chip microcomputer, the capacitors C171 and C173 are respectively electrically connected to the pins of the single-chip microcomputer, and the capacitors C171 and C173 are used to filter the signals received by the single-chip microcomputer.

[0041] In particular, conditioning module one is composed of transistor one, capacitor C172, resistor R114, resistor R117 and resistor R118, and transistor one, capacitor C172, resistor R114, resistor R117 and resistor R118 are electrically connected. Conditioning module two is composed of transistor two, capacitor C178, resistor R122, resistor R123, resistor R124 and resistor R126, and transistor two, capacitor C178, resistor R122, resistor R123, resistor R124 and resistor R126 are electrically connected.

[0042] The first induction electrode is fitted with one end of the cable to be detected, and the second induction electrode is fitted with the other end of the cable to be detected. The first induction electrode and the second induction electrode are used for signal transmission. The frequency generator is used to generate a signal source with a fixed frequency accuracy. The frequency generator is composed of a crystal oscillator and a post-amplifier. The crystal oscillator generates a highly stable frequency oscillation signal, which is amplified by the post-amplifier to reach a set amplitude.

[0043] The present invention provides Figure 7 A method for using a disconnection monitoring device is shown, comprising the following steps:

[0044] Step S1: placing the first sensing electrode and the second sensing electrode in close contact with the two ends of the cable to be tested respectively;

[0045] Step S2: After the monitoring device system is powered on, the frequency generator is controlled according to the configuration or key module to set the corresponding frequency output;

[0046] Step S3: The signal generated by the frequency generator is amplified by the conditioning module 1 and output to the sensing electrode 1;

[0047] Step S4: The signal sent by the sensing electrode 1 is returned to the conditioning module 2 through the sensing electrode 2, and is input to the ADC pin of the single-chip microcomputer after amplification and filtering, and the signal data is displayed on the display module;

[0048] Step S5: The single-chip microcomputer can determine that there is a disconnection between the two electrodes based on the different signal return values ​​of the conditioning module 2. When the cable is not broken, the single-chip microcomputer receives the signal return value 1. When the cable is broken, the single-chip microcomputer receives the signal return value 2. When the return value 1 and the return value 2 are different, it is determined that there is a disconnection between the cables to be detected, and the signal return value is displayed on the display module.

[0049] The working principle of the present invention is as follows: by closely fitting the sensing electrode 1 and the sensing electrode 2 to the two ends of the cable to be tested respectively, an electrical signal is generated by a frequency generator, the signal is amplified and output to the sensing electrode 1 by the conditioning module 1, the amplified signal is received by the sensing electrode 2, and returned to the conditioning module 2, the signal is amplified and filtered, and transmitted to the ADC pin of the single-chip microcomputer, the single-chip microcomputer can judge whether there is a disconnection state between the two electrodes according to the different signal return values ​​of the conditioning module 2, the signal is transmitted between the sensing electrode 1 and the sensing electrode 2, and an electromagnetic induction effect is formed between the cable to be tested, when the cable is not broken, the single-chip microcomputer receives the return value 1 of the signal, when the cable is broken, the single-chip microcomputer receives the return value 2 of the signal, if the return value 1 is different from the return value 2, it means that a break occurs between the cables to be tested, which can meet the lossless and non-electric detection of line continuity, has the advantages of low cost and simple manufacturing, and is convenient for monitoring the continuity of the cable.

[0050] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disconnection monitoring device, characterized in that: It includes an indication module, a frequency generator, a conditioning module and a sensing electrode, wherein the indication module, the frequency generator, the conditioning module and the sensing electrode are connected via an electrical connection line, the indication module is used to control the frequency generator and the conditioning module and display data, the frequency generator is used to set a corresponding frequency output, the conditioning module is used to filter and amplify the signal and transmit the signal to the indication module, and the sensing electrode is used to be close to the cable to be detected and monitor the on and off of the cable.

2. A disconnection monitoring device according to claim 1, characterized in that: The indication module comprises: A single chip microcomputer, the single chip microcomputer is connected to the frequency generator through an electrical connection line, and the single chip microcomputer is used to monitor the signal of the sensing electrode; A display module, the display module is electrically connected to the single chip computer, and the display module is used to display the signal data of the sensing electrode; A key module is electrically connected to the single-chip computer and is used to adjust the frequency generated by the frequency generator.

3. A disconnection monitoring device according to claim 2, characterized in that: The conditioning module comprises: A conditioning module 1, the conditioning module 1 is electrically connected to the frequency generator, and the conditioning module 1 is used to filter and amplify the signal sent by the frequency generator; The second conditioning module is electrically connected to the single chip microcomputer and is used to amplify the signal of the sensing electrode and transmit the signal to the single chip microcomputer.

4. A disconnection monitoring device according to claim 3, characterized in that: The sensing electrode comprises: A sensing electrode 1, wherein the sensing electrode 1 is electrically connected to a conditioning module 1, and the sensing electrode 1 is used to transmit a frequency signal; The second sensing electrode is electrically connected to the second conditioning module and is used to receive the signal sent by the first sensing electrode.

5. A disconnection monitoring device according to claim 2, characterized in that: A capacitor C171 and a capacitor C173 are respectively disposed on one side of the single chip computer, and the capacitor C171 and the capacitor C173 are respectively electrically connected to the pins of the single chip computer.

6. A disconnection monitoring device according to claim 3, characterized in that: The conditioning module 1 is composed of a transistor 1, a capacitor C172, a resistor R114, a resistor R117 and a resistor R118, and the transistor 1, the capacitor C172, the resistor R114, the resistor R117 and the resistor R118 are electrically connected.

7. A disconnection monitoring device according to claim 3, characterized in that: The conditioning module 2 is composed of transistor 2, capacitor C178, resistor R122, resistor R123, resistor R124 and resistor R126, and the transistor 2, capacitor C178, resistor R122, resistor R123, resistor R124 and resistor R126 are electrically connected.

8. A disconnection monitoring device according to claim 4, characterized in that: The first sensing electrode is attached to one end of the cable to be detected, and the second sensing electrode is attached to the other end of the cable to be detected. The first sensing electrode and the second sensing electrode are used for signal transmission.

9. A disconnection monitoring device according to claim 1, characterized in that: The frequency generator is used to generate a signal source with a fixed frequency accuracy. The frequency generator is composed of a crystal oscillator and a post-amplifier. The crystal oscillator generates a highly stable frequency oscillation signal, which is amplified by the post-amplifier to reach a set amplitude.

10. A method for using a disconnection monitoring device, characterized in that: The following steps are involved: Step S1: placing the first sensing electrode and the second sensing electrode in close contact with the two ends of the cable to be tested respectively; Step S2: After the monitoring device system is powered on, the frequency generator is controlled according to the configuration or key module to set the corresponding frequency output; Step S3: The signal generated by the frequency generator is amplified by the conditioning module 1 and output to the sensing electrode 1; Step S4: The signal sent by the sensing electrode 1 is returned to the conditioning module 2 through the sensing electrode 2, and is input to the ADC pin of the single-chip computer after amplification and filtering, and the signal data is displayed on the display module; Step S5: The single-chip microcomputer can determine that there is a disconnection between the two electrodes based on the different signal return values ​​of the conditioning module 2. When the cable is not broken, the single-chip microcomputer receives the signal return value 1. When the cable is broken, the single-chip microcomputer receives the signal return value 2. When the return value 1 and the return value 2 are different, it is determined that there is a disconnection between the cables to be detected, and the signal return value is displayed on the display module.

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