Power distribution network near-electricity intelligent monitoring and early warning device

Abstract

The invention provides a power distribution network near-electricity intelligent monitoring and early warning device, which relates to the technical field of near-electricity detection and alarm and comprises a direct-current power supply, a buzzer, a first antenna, a first voltage division module, a control chip, a second antenna, a wireless signal generator and an intelligent voltage division module. According to the invention, through designing the wireless signal generator connected in series to the buzzer power supply circuit, when the near-electricity intelligent monitoring and early warning device responds for a short time, the wireless signal generator can synchronously generate a wireless signal with a specific frequency, and the second antenna receives the wireless signal and then controls the intelligent voltage division module to work. The sensitivity of the near-electricity intelligent monitoring and early warning device is increased, and an alarm is easier to give, so that the use safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of near-power detection and alarm, and in particular to an intelligent near-power monitoring and early warning device for a distribution network. Background Art

[0002] Construction workers working near power grids are prone to electric shock accidents. Therefore, a proximity electric shock warning device has been designed. It can be installed on the action end of the construction vehicle, the surface of the vehicle body, and the safety helmets and safety boots of the construction workers. When the vehicle or workers approach the power distribution equipment, the buzzer on the proximity electric shock warning device will sound a warning tone, prompting them to evacuate as soon as possible.

[0003] The currently designed near-electricity warning device mainly relies on detecting the size of the magnetic field generated by the power grid to determine the distance between the near-electricity warning device and the emission source (the charged body of the power grid). The voltage carried by the emission source is related to the warning safety distance; for example, for a voltage of 220V, the warning safety distance can be designed to be between 0.6M and 1M. When the near-electricity warning device is actually used, it is impossible to distribute too many near-electricity warning devices on the surface of the construction vehicle, and construction workers will not all wear both safety helmets and safety boots. This may cause workers or parts of the construction vehicle to get too close to the emission source, and the near-electricity warning device may not reach the warning safety distance, causing the construction workers and construction vehicles to work in a dangerous environment. For this reason, the present invention provides an intelligent monitoring and warning device for near-electricity in a distribution network. Summary of the Invention

[0004] In response to the shortcomings of the existing technology, the present invention provides an intelligent monitoring and early warning device for near-electricity in distribution networks, which solves the problem that when workers or construction vehicles are too close to the emission source and the near-electricity early warning device has not reached the warning safety distance, the near-electricity early warning device will not alarm, causing construction workers and construction vehicles to work in a dangerous environment.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] An intelligent monitoring and early warning device for power distribution network near-current, comprising:

[0007] DC power supply;

[0008] A buzzer, wherein the buzzer is powered by a DC power supply;

[0009] The first antenna is used to sense the magnetic field of the charged object in the power grid and generate a signal voltage V1;

[0010] The first voltage divider module divides the regulated voltage output by the control chip to form a voltage V2 output;

[0011] Control chip: The control chip is powered by a DC power supply. The control chip compares V1 and V2. If V1>V2, the control chip controls the buzzer to work.

[0012] a second antenna, the second antenna being used to receive a wireless signal of a specific frequency, and after the wireless signal of the specific frequency is amplified by the amplifying circuit, the amplified wireless signal of the specific frequency controls the intelligent voltage divider module;

[0013] A wireless signal generator, which is connected in series to the circuit of the buzzer, and operates synchronously with the buzzer to generate a wireless signal of a specific frequency;

[0014] An intelligent voltage divider module is used to increase the voltage divided by the first voltage divider module.

[0015] Preferably, it also includes:

[0016] A first circuit, wherein the first circuit is a closed loop, and a DC power supply, a buzzer, a wireless signal generator, and a first transistor are connected in series in the first circuit;

[0017] The output end of the control chip for controlling the operation of the buzzer is connected to the base of the first transistor.

[0018] Preferably, it also includes:

[0019] A second circuit, wherein the second circuit is connected to the voltage stabilization output terminal of the control chip, and is connected in series with the intelligent voltage divider module, the first resistor, and the first voltage divider module, and then grounded;

[0020] The intelligent voltage divider module includes: a first fixed resistor and a second transistor arranged in parallel, and the wireless signal received by the second antenna is connected to the base of the second transistor after passing through the amplification circuit;

[0021] The first voltage dividing module includes: a first voltage dividing circuit, a second voltage dividing circuit, a third voltage dividing circuit and a fourth voltage dividing circuit arranged in parallel;

[0022] The first voltage divider circuit, the second voltage divider circuit, the third voltage divider circuit, and the fourth voltage divider circuit each include a voltage divider resistor and a manual switch, and the voltage divider resistors in the first voltage divider circuit, the second voltage divider circuit, the third voltage divider circuit, and the fourth voltage divider circuit are different;

[0023] The second branch circuit is connected between the first resistor and the first voltage divider module on the second circuit, and the second branch circuit inputs V2 to the control chip.

[0024] Preferably, the second circuit is connected in parallel with a first filter circuit, and the first filter circuit is connected in series with a first pull-down resistor and a first filter capacitor.

[0025] Preferably, the amplifying circuit includes:

[0026] A third triode, wherein the base of the third triode is connected to the second antenna, the collector of the third triode is connected to the positive electrode of the DC power supply, and the emitter of the third triode is connected to the intelligent voltage divider module.

[0027] Preferably, the first circuit is connected in parallel with a second filter circuit a1, and the second filter circuit a1 is connected in series with a voltage stabilizing capacitor.

[0028] Preferably, the control chip is a JW0858 model chip.

[0029] Preferably, the vehicle further comprises: a mounting frame for mounting the near-current intelligent monitoring and warning device on the outer contour of the engineering vehicle;

[0030] The mounting frame comprises:

[0031] A housing, one end of which is open, and a side edge of the open end of the housing extends outward to form a mounting portion, and a mounting opening is formed on the mounting portion;

[0032] A drive motor, wherein the drive motor is fixedly mounted on the outside of the housing;

[0033] The shell is provided with a long strip shape, and a small wheel and a large wheel are rotatably installed on the inner side of the shell and near the two ends. The output end of the driving motor extends to the inner side of the shell, and the output end of the driving motor is fixedly connected to the rotating shaft of the small wheel. A belt is installed between the small wheel and the large wheel, and the near-electric intelligent monitoring and early warning device is fixedly installed on the side of the belt.

[0034] Preferably, the shell is made of non-metallic material, and a sound-permeable hole is opened on the side of the shell.

[0035] Preferably, the end of the shell close to the small wheel is a narrow portion, the end of the shell close to the large wheel is a wide portion, and the area between the narrow portion and the wide portion of the shell is a straight transition section.

[0036] The present invention provides an intelligent monitoring and early warning device for power distribution network. It has the following beneficial effects:

[0037] 1. The present invention, by designing a wireless signal generator connected in series to the buzzer power supply circuit, can synchronously enable the wireless signal generator to generate a wireless signal of a specific frequency when the near-electric intelligent monitoring and early warning device responds in a short time (the control chip determines that V1>V2 and the buzzer issues an alarm). After receiving the wireless signal, the second antenna controls the operation of the intelligent voltage divider module, thereby increasing the sensitivity of the near-electric intelligent monitoring and early warning device and making it easier to issue an alarm, thereby increasing the safety of use.

[0038] 2. The present invention, through the design of a wireless signal generator, a second antenna and an intelligent voltage divider module, when multiple near-electricity intelligent monitoring and early warning devices are about to be used, if one of them sounds an alarm (the wireless signal generator is working), the other nearby near-electricity intelligent monitoring and early warning devices will immediately increase their sensitivity, thereby quickly confirming the safety range, so that construction personnel and construction vehicles can quickly evacuate to a safe area. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a schematic diagram of a power distribution network near-current intelligent monitoring and early warning device proposed by the present invention;

[0040] Figure 2 This is a schematic diagram of the first circuit of a power distribution network near-current intelligent monitoring and early warning device proposed by the present invention;

[0041] Figure 3 This is a schematic diagram of the second circuit of the intelligent monitoring and early warning device for power distribution network proposed by the present invention;

[0042] Figure 4 This is a schematic diagram of the amplifying circuit of an intelligent monitoring and early warning device for near-current distribution network proposed by the present invention;

[0043] Figure 5 This is a first-perspective perspective schematic diagram of the installation frame of the intelligent monitoring and early warning device for near-electricity distribution network proposed by the present invention;

[0044] Figure 6 This is a second perspective schematic diagram of the installation frame of the intelligent monitoring and early warning device for near-electricity distribution network proposed by the present invention;

[0045] Figure 7 This is a schematic diagram of the use of the intelligent monitoring and early warning device for near-power distribution network proposed by the present invention.

[0046] Among them, 1. Near-electric intelligent monitoring and early warning device; 101. First antenna; 102. Second antenna; 103. Amplifying circuit; 1031. Third transistor; 104. Intelligent voltage divider module; 1041. First fixed resistor; 1042. Second transistor; 105. First voltage divider module; 1051. First voltage divider circuit; 1052. Second voltage divider circuit; 1053. Third voltage divider circuit; 1054. Fourth voltage divider circuit; 106. Control chip; 107. DC power supply; 108. Buzzer; 109. Wireless signal transmitter Generator; 1010, first transistor; 1011, voltage-stabilizing capacitor; 1012, first resistor; 1013, first pull-down resistor; 1014, first filter capacitor; 2, grid charged body; 3, mounting frame; 301, shell; 302, mounting part; 303, mounting port; 304, drive motor; 305, small wheel; 306, large wheel; 307, belt; A, first area; B, second area; a, first circuit; a1, second filter circuit; b, second circuit; b1, second branch circuit; b2, first filter circuit. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0048] Example 1:

[0049] like Figure 1-Figure 7 As shown, an embodiment of the present invention provides an intelligent monitoring and early warning device for near-electricity in a distribution network, comprising: a DC power supply 107, a buzzer 108, a first antenna 101, a first voltage divider module 105, a control chip 106, a second antenna 102, a wireless signal generator 109 and an intelligent voltage divider module 104.

[0050] The control chip uses the JW0858 model chip, whose 8th pin is connected to the positive pole of the DC power supply 107, the 5th pin is connected to the negative pole of the DC power supply 107 and is grounded. The control chip is JW0858, which has a comparison module and a voltage regulator module set inside, and outputs a stable voltage (1.2V) from the 3rd pin.

[0051] Among them, the buzzer 108 is powered by a DC power supply 107 and controlled by a control chip 106. The first antenna 101 is used to sense the magnetic field of the charged object 2 of the power grid and generate a signal voltage V1. The signal voltage V1 is input to the first pin of the control chip 106. The first voltage divider module 105 divides the regulated voltage output by the control chip 106 to form a voltage V2 output, and the voltage V2 is input to the second pin of the control chip 106. The control chip 106 is powered by the DC power supply 107. The control chip 106 compares V1 and V2. If V1>V2, the control chip 106 controls the buzzer 108 to operate.

[0052] V1>V2 means that the intensity of the charged object 2 of the power grid sensed by the first antenna 101 reaches a certain value, so that the voltage signal generated by the first antenna 101 is large enough and greater than the set V2 value. It also means that the distance between the location of the first antenna 101 and the charged object 2 of the power grid is less than the safe distance, and an alarm prompt is required.

[0053] The second antenna 102 is used to receive a wireless signal of a specific frequency. After the wireless signal of the specific frequency is amplified by the amplifier circuit 103, the amplified wireless signal of the specific frequency controls the intelligent voltage divider module 104. The intelligent voltage divider module 104 is used to increase the voltage dividing capability of the first voltage divider module 105. When the intelligent voltage divider module 104 is in operation, it and the first voltage divider module 105 both divide the regulated voltage output by the control chip 106 to reduce the generated V2 voltage. The wireless signal generator 109 is connected in series with the circuit of the buzzer 108. The wireless signal generator 109 operates synchronously with the buzzer 108 and generates a wireless signal of a specific frequency.

[0054] The construction workers or engineering vehicles carry the near-electricity intelligent monitoring and early warning device 1, which is installed on the construction workers' safety helmets, safety boots, or the outer contour of the engineering vehicles. The near-electricity intelligent monitoring and early warning device 1 moves with the engineering vehicles or construction workers.

[0055] In one case, when construction workers or engineering vehicles are moving, a part of them enters the near-electrical warning danger zone. The signal voltage V1 induced by the first antenna 101 is V1>V2 in a relatively short period of time. The traditional near-electrical intelligent monitoring and early warning device only generates one or two alarms and then stops the alarm, which does not attract the attention of on-site workers. In the present invention, at the same time as the buzzer 108 alarms, the wireless signal generator 109 is powered on and emits a wireless signal of a specific frequency according to the inherent frequency set by the wireless signal generator 109. The second antenna 102 receives the signal emitted by the wireless signal generator 109, amplifies it through the amplifier circuit 103, and transmits it to the intelligent voltage divider module 104. At this time, the intelligent voltage divider module 104 increases the voltage dividing capacity of the first voltage divider module 105, and the regulated voltage output by the control chip 106 is constant. At this time, the voltage V2 will decrease, making the near-electrical intelligent monitoring and early warning device more sensitive, making it easier to achieve V1>V2, thereby increasing safety in use.

[0056] Another situation is that Figure 7 The first area A shown in the figure represents the dangerous area, and the second area B is the dangerous area after the sensitivity of the near-electricity intelligent monitoring and early warning device is increased. When construction is carried out in multiple locations, as long as one of the near-electricity intelligent monitoring and early warning devices 1 enters the first area A, the sensitivity of multiple near-electricity intelligent monitoring and early warning devices 1 around it will be increased, thereby being able to warn the construction personnel in the second area B. The construction personnel can quickly judge the safe area and ensure construction safety.

[0057] By designing a wireless signal generator, a second antenna, and an intelligent voltage divider module, when multiple near-electricity intelligent monitoring and warning devices are close to use, if one of them sounds an alarm (the wireless signal generator is working), the other nearby near-electricity intelligent monitoring and warning devices will immediately increase their sensitivity, thereby quickly confirming the safety range and facilitating the rapid evacuation of construction personnel and construction vehicles to a safe area.

[0058] like Figure 2 As shown in , in one embodiment, it further includes: a first circuit a.

[0059] The first circuit a is a closed loop, in which a DC power supply 107 , a buzzer 108 , a wireless signal generator 109 and a first transistor 1010 are connected in series.

[0060] The first transistor 1010 serves as a switch. The DC power supply 107 supplies power to the buzzer 108 and the wireless signal generator 109 . The output end of the control chip 106 for controlling the operation of the buzzer 108 is connected to the base of the first transistor 1010 .

[0061] When the control chip 106 sends an alarm signal, the high level is connected to the base of the first transistor 1010. At this time, the first transistor 1010 in the first circuit a is in the on state, and the buzzer 108 emits an alarm sound, such as a "beep, beep, beep" sound, to alert the surrounding workers. At the same time, the wireless signal generator 109 emits a wireless signal of a specific frequency. Since the wireless signal generator 109 only needs to emit a wireless signal of one frequency, from the perspective of cost saving, a low-profile version of a fixed-frequency wireless signal generator can be selected.

[0062] The first circuit a is connected in parallel to the second filter circuit a1 , and the second filter circuit a1 is connected in series with a voltage-stabilizing capacitor 1011 .

[0063] The DC power supply 107 in the first circuit a is used to supply power to the control chip 106 . A voltage-stabilizing capacitor 1011 is designed to ensure power supply stability and guarantee the normal operation of the control chip 106 .

[0064] like Figure 3 As shown in , in one embodiment, it further includes: a second circuit b.

[0065] One end (positive electrode) of the second circuit b is connected to the voltage-stabilizing output end of the control chip 106 , and is connected in series with the intelligent voltage-dividing module 104 , the first resistor 1012 and the first voltage-dividing module 105 and then to the ground (negative electrode).

[0066] The intelligent voltage divider module 104 includes a first fixed resistor 1041 and a second transistor 1042 connected in parallel. The wireless signal received by the second antenna 102 is connected to the base of the second transistor 1042 after passing through the amplifying circuit 103 .

[0067] When the second antenna 102 does not receive a wireless signal, the second transistor 1042 in the intelligent voltage divider module 104 is in an off state. At this time, the first resistor 1012 and the first fixed resistor 1041 jointly divide the voltage with the first voltage divider module 105. Therefore, the voltage dividing capability of the first voltage divider module 105 is weak, and V2 is larger.

[0068] When the second antenna 102 receives a wireless signal, the second transistor 1042 in the intelligent voltage divider module 104 is in the on state. At this time, the first resistor 1012 and the first voltage divider module 105 divide the voltage. Therefore, the voltage divider module 105 has a stronger voltage divider capability and V2 is smaller.

[0069] The first voltage dividing module 105 includes a first voltage dividing circuit 1051 , a second voltage dividing circuit 1052 , a third voltage dividing circuit 1053 , and a fourth voltage dividing circuit 1054 , which are connected in parallel.

[0070] Among them, the first voltage divider circuit 1051, the second voltage divider circuit 1052, the third voltage divider circuit 1053 and the fourth voltage divider circuit 1054 each include a voltage divider resistor and a manual switch, and the voltage divider resistors in the first voltage divider circuit 1051, the second voltage divider circuit 1052, the third voltage divider circuit 1053 and the fourth voltage divider circuit 1054 are different.

[0071] According to usage requirements, the user closes one of the manual switches of the first voltage divider circuit 1051, the second voltage divider circuit 1052, the third voltage divider circuit 1053 and the fourth voltage divider circuit 1054 in the first voltage divider module 105 to adjust the voltage dividing capacity of the first voltage divider module 105 to meet the requirements of different high-voltage cables.

[0072] For example, when working around a 220V conductor, the voltage value sensed by the first antenna 101 within a safe distance is smaller, and the first voltage divider module 105 needs to divide more voltage to make the voltage V2 smaller to meet the requirements; for 10KV high voltage electricity, the voltage value sensed by the first antenna 101 within a safe distance increases slightly, and the voltage that the first voltage divider module 105 needs to divide needs to be reduced to make V2 meet the requirements.

[0073] The second branch circuit b1 is connected between the first resistor 1012 and the intelligent voltage divider module 104 on the second circuit b. The second branch circuit b1 inputs V2 to the control chip 106, and the control chip 106 performs data determination processing of V1>V2.

[0074] In one embodiment, the second circuit b is connected in parallel to the first filter circuit b2 , and the first filter circuit b2 is connected in series with a first pull-down resistor 1013 and a first filter capacitor 1014 .

[0075] In one embodiment, the amplifier circuit 103 includes: a third transistor 1031, the base of the third transistor 1031 is connected to the second antenna connection 102, the collector of the third transistor 1031 is connected to the positive electrode of the DC power supply 107, and the emitter of the third transistor 1031 is connected to the intelligent voltage divider module 104.

[0076] The induced voltage generated by the second antenna connection 102 is relatively small, and is amplified by the amplifier circuit 103 and then controls the intelligent voltage divider module 104 .

[0077] In one embodiment, it further includes: a mounting frame 3 for mounting the near-current intelligent monitoring and early warning device 1 on the outer contour of the engineering vehicle.

[0078] The mounting frame 3 includes a housing 301 , a driving motor 304 , a small wheel 305 , a large wheel 306 and a belt 307 .

[0079] Among them, one end of the shell 301 is open, and the side of the open end of the shell 301 extends outward to form a mounting portion 302. A mounting port 303 is provided on the mounting portion 302, so that the shell 301 can be fixedly mounted on the outer contour of the engineering vehicle with screws. The drive motor 304 is fixedly mounted on the outside of the shell 301. The shell 301 is provided with a long strip. A small wheel 305 and a large wheel 306 are rotatably mounted on the inner side of the shell 301 and near the two ends. The output end of the drive motor 304 extends to the inner side of the shell 301, and the output end of the drive motor 304 is fixedly connected to the rotating shaft of the small wheel 305. A belt 307 is installed between the small wheel 305 and the large wheel 306, and the near-electric intelligent monitoring and early warning device 1 is fixedly mounted on the side of the belt 307.

[0080] Specifically, the rotating shaft of the large wheel 306 is fixedly connected to the shell 301, the large wheel 306 is interactively connected to its rotating shaft, the rotating shaft of the small wheel 305 is rotatably installed with the shell 301, the small wheel 305 is fixedly connected to its rotating shaft, and the output shaft of the drive motor 304 is fixedly connected to the rotating shaft of the small wheel 305.

[0081] The driving motor 304 is energized to drive the small wheel 305 to rotate, and then drive the belt 307 to rotate. At the same time, the large wheel 306 will also rotate along with the belt 307. The belt 307 drives the near-electricity intelligent monitoring and early warning device 1 to move back and forth, realizing near-electricity monitoring in an area, which is equivalent to multiple existing near-electricity monitoring and early warning devices.

[0082] In one embodiment, a metal shell easily shields the first antenna 101 and the second antenna 102 inside, so the shell 301 is made of non-metallic material, and a sound-permeable hole is opened on the side of the shell 301 to allow the sound generated by the buzzer 108 to be transmitted.

[0083] In one embodiment, the end of the housing 301 close to the small wheel 305 is a narrow portion, the end of the housing 301 close to the large wheel 306 is a wide portion, and the area between the narrow portion and the wide portion of the housing 301 is a straight transition section.

[0084] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent monitoring and early warning device for power distribution network near-current, comprising: DC power supply (107); a buzzer (108), wherein the buzzer (108) is powered by a DC power supply (107); It is characterized by further comprising: A first antenna (101) is used to sense the magnetic field of a charged object (2) in the power grid and generate a signal voltage V1; A first voltage dividing module (105) divides the regulated voltage output by the control chip (106) to form a voltage V2 output; A control chip (106) is powered by a DC power supply (107). The control chip (106) compares V1 with V2. If V1>V2, the control chip (106) controls the buzzer (108) to operate. A second antenna (102), the second antenna (102) is used to receive a wireless signal of a specific frequency, and after the wireless signal of the specific frequency is amplified by an amplifying circuit (103), the amplified wireless signal of the specific frequency controls the intelligent voltage divider module (104); A wireless signal generator (109), the wireless signal generator (109) is connected in series to the circuit of the buzzer (108), the wireless signal generator (109) and the buzzer (108) work synchronously, and the wireless signal generator (109) generates a wireless signal of a specific frequency; An intelligent voltage dividing module (104), the intelligent voltage dividing module (104) is used to increase the voltage divided by the first voltage dividing module (105).

2. The intelligent monitoring and early warning device for power distribution network according to claim 1, characterized in that: Also includes: A first circuit (a), wherein the first circuit (a) is a closed loop, and a DC power supply (107), a buzzer (108), a wireless signal generator (109), and a first transistor (1010) are connected in series to the first circuit (a); The output end of the control chip (106) for controlling the operation of the buzzer (108) is connected to the base of the first transistor (1010).

3. The intelligent monitoring and early warning device for power distribution network according to claim 2, characterized in that: Also includes: A second circuit (b), wherein the second circuit (b) is connected to the voltage-stabilizing output terminal of the control chip (106), and is connected in series with the intelligent voltage-dividing module (104), the first resistor (1012), and the first voltage-dividing module (105) in sequence and then grounded; The intelligent voltage divider module (104) comprises: a first fixed resistor (1041) and a second triode (1042) arranged in parallel; the wireless signal received by the second antenna (102) is connected to the base of the second triode (1042) after passing through the amplifying circuit (103); The first voltage dividing module (105) comprises: a first voltage dividing circuit (1051), a second voltage dividing circuit (1052), a third voltage dividing circuit (1053) and a fourth voltage dividing circuit (1054) arranged in parallel; The first voltage divider circuit (1051), the second voltage divider circuit (1052), the third voltage divider circuit (1053), and the fourth voltage divider circuit (1054) each comprise a voltage divider resistor and a manual switch, and the voltage divider resistors in the first voltage divider circuit (1051), the second voltage divider circuit (1052), the third voltage divider circuit (1053), and the fourth voltage divider circuit (1054) are different; The second branch circuit (b1) is connected between the first resistor (1012) and the first voltage divider module (105) on the second circuit (b), and the second branch circuit (b1) inputs the voltage V2 to the control chip (106).

4. The intelligent monitoring and early warning device for power distribution network according to claim 3, characterized in that: The second circuit (b) is connected in parallel to the first filter circuit (b2), and the first filter circuit (b2) is connected in series with a first pull-down resistor (1013) and a first filter capacitor (1014).

5. The intelligent monitoring and early warning device for power distribution network according to claim 3, characterized in that: The amplifying circuit (103) comprises: A third triode (1031), wherein the base of the third triode (1031) is connected to the second antenna connection (102), the collector of the third triode (1031) is connected to the positive electrode of the DC power supply (107), and the emitter of the third triode (1031) is connected to the intelligent voltage divider module (104).

6. The intelligent monitoring and early warning device for power distribution network according to claim 1, characterized in that: The first circuit (a) is connected in parallel to a second filtering circuit (a1), and the second filtering circuit (a1) is connected in series to a voltage-stabilizing capacitor (1011).

7. The intelligent monitoring and early warning device for power distribution network according to claim 1, characterized in that: The control chip is a JW0858 model chip.

8. The intelligent monitoring and early warning device for power distribution network according to claim 1, characterized in that: Also includes: A mounting frame (3) is used to mount the near-current intelligent monitoring and early warning device (1) on the outer contour of the engineering vehicle; The mounting frame (3) comprises: A housing (301), wherein one end of the housing (301) is open, and the side of the open end of the housing (301) extends outward to form a mounting portion (302), and a mounting opening (303) is provided on the mounting portion (302); A drive motor (304), wherein the drive motor (304) is fixedly mounted on the outside of the housing (301); The shell (301) is provided with a long strip shape, and a small wheel (305) and a large wheel (306) are rotatably installed on the inner side of the shell (301) and near the two ends thereof. The output end of the driving motor (304) extends to the inner side of the shell (301), and the output end of the driving motor (304) is fixedly connected to the rotating shaft of the small wheel (305). A belt (307) is installed between the small wheel (305) and the large wheel (306), and the near-electric intelligent monitoring and early warning device (1) is fixedly installed on the side of the belt (307).

9. The intelligent monitoring and early warning device for power distribution network according to claim 8, characterized in that: The shell (301) is made of non-metallic material, and a sound-permeable hole is provided on the side of the shell (301).

10. The intelligent monitoring and early warning device for power distribution network according to claim 8, characterized in that: One end of the housing (301) close to the small wheel (305) is a narrow portion, and one end of the housing (301) close to the large wheel (306) is a wide portion. The area between the narrow portion and the wide portion of the housing (301) is a straight transition section.

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