Transmitter for de-energized cable identification apparatus

Abstract

The utility model discloses a kind of transmitter of power-off cable identification instrument, belong to a kind of cable tester, the transmitter includes power supply circuit, the power supply circuit is connected with power management circuit, the power management circuit is connected with flyback boost circuit, the flyback boost circuit is connected with output signal detection circuit, by power management circuit connection power supply circuit, again by flyback boost circuit and carry out boost, then by output signal detection circuit and carry out pulse signal current detection, then, the pulse signal of test is output to measuring cable, and further complete the identification detection of power-off cable;Compared with traditional scheme, can greatly improve identification efficiency and accuracy, reduce the risk of misoperation, also can reduce manpower investment.

Description

Technical Field

[0001] This utility model relates to a cable tester, and more specifically, to a transmitter for a power outage cable identification device. Background Technology

[0002] Power outage cable identifiers are core equipment for power grid operation and maintenance. They are designed for accurate identification of buried cable trenches or overhead cables during power outages, addressing the pain points of traditional identification methods such as "unclear identification, inaccurate judgment, and low efficiency." This provides crucial support for power maintenance, line upgrades, and fault diagnosis. The ongoing construction of smart grids and the transformation of urban distribution networks have led to a surge in demand for cable identification due to dense cable layouts. Traditional manual identification relies on experience, which is not only inefficient but also prone to misjudgments due to lost markers or complex wiring, potentially causing safety accidents. Policies are also driving the upgrade of power operation and maintenance from experience-based to technology-based, further expanding equipment demand. Therefore, it is necessary to further research and improve power outage cable testers, especially the circuit structure of their transmitters. Utility Model Content

[0003] One of the objectives of this invention is to address the aforementioned shortcomings by providing a transmitter for a power outage cable identification device. This aims to solve the technical problems of low efficiency, misjudgment in complex circuits, and safety accidents caused by cable handling in existing identification devices.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention utilizes a transmitter for a power outage cable identification device. The transmitter includes a power supply circuit connected to a power management circuit, which in turn connects to a flyback boost circuit. The flyback boost circuit is connected to an output signal detection circuit. The output signal detection circuit measures the current using the Hall effect principle and feeds it back to the ADC acquisition terminal of the main control chip, then outputs a measurement pulse signal to the measurement cable. The power management circuit, flyback boost circuit, and output signal detection circuit are all connected to the main control chip. The main control chip controls the on / off state of the power management circuit, samples the power supply voltage, and controls the on / off state of the flyback boost circuit. A current pulse output control circuit is also connected between the flyback boost circuit and the output signal detection circuit. This current pulse output control circuit controls the front-stage capacitor to release energy, forming a test pulse signal.

[0005] As a preferred embodiment, a further technical solution is as follows: the power supply circuit is a 220V circuit, and the power management circuit is also connected to a storage battery; the power management circuit includes a power on / off circuit, a power switching circuit, and a voltage regulator circuit; the power on / off circuit is used to control the on / off state of the generator power supply; the power switching circuit is connected to the power supply circuit and the storage battery, and is used to switch the storage battery and the power supply circuit to supply power alternately; the voltage regulator circuit is connected to the rear side of the power supply circuit.

[0006] A further technical solution is that the power management circuit is also connected to an LED indicator group, and the LED indicator group is also connected to a main control chip. The main control chip is used to provide control signals to the LED group through comparison and amplification, thereby controlling the on / off state and frequency of the LED group.

[0007] Compared with existing technologies, one of the advantages of this utility model is that it connects to the power supply circuit through a power management circuit, then boosts the voltage through a flyback boost circuit, and then detects the pulse signal current through an output signal detection circuit before outputting the tested pulse signal to the measuring cable, thereby completing the identification and detection of the power outage cable. Compared with traditional solutions, it can significantly improve identification efficiency and accuracy, reduce the risk of misoperation, and reduce manpower input. Moreover, as an essential device, it can prevent accidents caused by accidental cutting or connecting of cables from the source, comply with power safety regulations, shorten the duration of power outages, and reduce operation and maintenance costs. It is widely applicable to scenarios such as power companies, industrial parks, rail transit, and power construction units. Attached Figure Description

[0008] Figure 1 This is a schematic block diagram illustrating one embodiment of the present invention.

[0009] Figure 2 This is a circuit diagram illustrating the power supply circuit in one embodiment of the present invention.

[0010] Figure 3 This is a circuit diagram illustrating an automatic power switching circuit in one embodiment of the present invention.

[0011] Figure 4 This is a circuit diagram illustrating the power-on / off circuit in one embodiment of the present invention.

[0012] Figure 5 This is a circuit diagram illustrating a voltage regulator circuit in one embodiment of the present invention.

[0013] Figure 6 This is a circuit diagram illustrating a flyback boost circuit in one embodiment of the present invention.

[0014] Figure 7This is a circuit diagram illustrating the output signal detection circuit in one embodiment of the present invention.

[0015] Figure 8 This is a circuit diagram illustrating the main control chip in one embodiment of the present invention.

[0016] Figure 9 This is a circuit diagram illustrating the current pulse output control circuit in one embodiment of the present invention.

[0017] Figure 10 This is a circuit diagram illustrating a charging indicator circuit in one embodiment of the present invention. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] refer to Figure 1 As shown, one embodiment of this utility model is a transmitter for a power outage cable identification device. The transmitter includes a power supply circuit, and the circuit structure diagram of the power supply circuit is shown below. Figure 2 As shown, the aforementioned power supply circuit is connected to the power management circuit, the power management circuit is connected to the flyback boost circuit, and the flyback boost circuit is connected to the output signal detection circuit. The circuit structure of the flyback boost circuit is as follows: Figure 6 As shown, the circuit structure of the output signal detection circuit is as follows: Figure 7 As shown; as Figure 7 As shown, the aforementioned output signal detection circuit measures the current using the Hall effect principle and feeds it back to the ADC acquisition terminal of the main control chip, then outputs a measurement pulse signal to the measurement cable. The aforementioned power management circuit, flyback boost circuit, and output signal detection circuit are respectively connected to the main control chip, which is used to control the on / off state of the power management circuit, sample the power supply voltage, and control the on / off state of the flyback boost circuit. The aforementioned main control chip can be a microcontroller, and its mechanism is as follows: Figure 8 As shown; simultaneously, a current pulse output control circuit is also connected between the flyback boost circuit and the output signal detection circuit. This current pulse output control circuit controls the energy released by the preceding capacitor to generate the test pulse signal. The circuit structure of the aforementioned current pulse output control circuit is as follows: Figure 9 As shown.

[0020] Preferably, the power supply circuit described above is a 220V circuit, and the power management circuit is also connected to the battery via a charging indicator circuit, as shown in the image below. Figure 10 As shown; the power management circuit mentioned above includes a power-on / off circuit, an automatic power switching circuit, and a voltage regulator circuit, wherein the power-on / off circuit is as follows: Figure 4 As shown, the automatic power switching circuit is as follows: Figure 3As shown in Figure 6, the voltage regulator circuit is used to control the on / off state of the generator power supply; the power switching circuit is connected to the power supply circuit and the battery, and is used to switch the battery and the power supply circuit to supply power alternately; the voltage regulator circuit is connected to the rear side of the power supply circuit.

[0021] Furthermore, the aforementioned power management circuit is also connected to an LED indicator group, which is also connected to a main control chip. The main control chip is used to provide control signals to the LED group through comparison and amplification, thereby controlling the on / off state and frequency of the LED group.

[0022] In this embodiment, the power supply circuit is connected to the power supply circuit through a power management circuit, and then the voltage is boosted by a flyback boost circuit. After pulse signal current detection by the output signal detection circuit, the test pulse signal is output to the measuring cable to complete the identification and detection of the power outage cable. Compared with the traditional solution, it can significantly improve the identification efficiency and accuracy, reduce the risk of misoperation, and reduce manpower input. Moreover, as an essential device, it can prevent accidents caused by accidental cutting or connecting of cables from the source, comply with the requirements of power safety regulations, shorten the power outage impact time, and reduce operation and maintenance costs. It is widely applicable to scenarios such as power companies, industrial parks, rail transit, and power construction units.

[0023] Based on the above embodiments of this utility model, the principle of each circuit constituting the transmitter is as follows: Power supply circuit: as Figure 1 As shown, after inputting 220V, a 15V DC voltage is output through the bridge and the ACDC module, which can simultaneously power the battery and the main circuit.

[0024] Charging indicator circuit: as Figure 10 As shown, it is directly powered by a 12V rechargeable lithium battery.

[0025] Power management circuit: as Figure 3-5 The circuit shown includes a power-on / off circuit, an automatic power switching circuit, and a voltage regulator circuit. The power-on / off circuit uses a button and a switching transistor chip. After the button triggers power-on, the chip controls the MOSFET chip to maintain power supply or disconnect the power. The automatic power switching circuit uses a MOSFET chip and a signal relay. When the circuit has a 220V power input, the relay is triggered to switch the power supply, simultaneously charging the battery. The voltage regulator circuit adds 5V and 3.3V regulated power supplies to the subsequent power supply circuit.

[0026] LED indicator light group: It includes power indicator light and output indicator light. By building an operational amplifier circuit, a comparator amplification method is used to provide control signals to the LED light group to control its on / off state. It also has a control line, and the chip can control the on / off state and frequency of the LED light group.

[0027] Flyback boost circuit: just like Figure 6 As shown, a high-efficiency N-channel switching regulator controller is used, a boost circuit is built based on the switching circuit principle, appropriate inductors and capacitors are selected for filtering, and a large capacitor bank is used to store energy for subsequent pulse output.

[0028] Current pulse output control circuit: as Figure 9 As shown, it mainly consists of a dual-channel gate driver chip and a high-power switching chip, which control the front-end capacitor to release energy to form a test pulse signal.

[0029] Output signal detection circuit: as Figure 7 As shown, the Hall effect principle is used for current measurement, and the measurement result is output to the ADC acquisition terminal of the MCU.

[0030] Main control circuit: just like Figure 8 As shown, a low-power, low-cost MCU can be selected, which also has high reliability. While meeting the requirements of circuit IO control, ADC acquisition, and high reliability, cost and quality can be controlled.

[0031] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0032] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A transmitter for a power outage cable identification device, characterized in that: The transmitter includes a power supply circuit, which is connected to a power management circuit. The power management circuit is connected to a flyback boost circuit, which is connected to an output signal detection circuit. The output signal detection circuit is used to measure the current through the Hall effect principle, and then feed it back to the ADC acquisition terminal of the main control chip, and then output a measurement pulse signal to the measurement cable. The power management circuit, flyback boost circuit, and output signal detection circuit are respectively connected to the main control chip. The main control chip is used to output signals to control the on / off state of the power management circuit, sample the power supply voltage, and control the on / off state of the flyback boost circuit. A current pulse output control circuit is also connected between the flyback boost circuit and the output signal detection circuit. The current pulse output control circuit is used to control the front capacitor to release energy to the outside, forming a test pulse signal.

2. The transmitter of the power outage cable identification device according to claim 1, characterized in that: The power supply circuit is a 220V circuit, and the power management circuit is also connected to a storage battery. The power management circuit includes a power on / off circuit, a power switching circuit, and a voltage regulator circuit. The power on / off circuit is used to control the switching of the transmitter power supply. The power switching circuit is connected to the power supply circuit and the battery, and is used to switch the battery and the power supply circuit to supply power alternately. The voltage regulator circuit is connected to the rear side of the power supply circuit.

3. The transmitter of the power outage cable identification device according to claim 1, characterized in that: The power management circuit is also connected to an LED indicator group, which is also connected to a main control chip. The main control chip is used to provide control signals to the LED group through comparison and amplification, thereby controlling the on / off state and frequency of the LED group.

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