CN217404391U

CN217404391U - Induction unit of airborne near-electricity early warning device

Info

Publication number: CN217404391U
Application number: CN202221112718.6U
Authority: CN
Inventors: 张鹏; 蒋程西; 杨德兴; 付兵; 闵英杰; 陈学庚; 张云建; 黄鑫; 吴雄; 李志卉
Original assignee: CHENGDU ZHIDA POWER AUTOMATION CO LTD
Current assignee: CHENGDU ZHIDA POWER AUTOMATION CO LTD
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-09-09
Anticipated expiration: 2032-05-09

Abstract

The utility model discloses an airborne nearly electric precaution device's induction element relates to nearly electric precaution device technical field. The box body is internally provided with a singlechip and a battery for supplying power; the box body is provided with a working indicator light, an antenna and a charging interface; the work indicator light, the antenna and the charging interface are respectively and electrically connected with the single chip microcomputer; the frame of the box body is provided with a mounting hole; the single chip microcomputer comprises an MCU controller, and the MCU controller is respectively connected with a storage module, a wireless communication module, a self-reset switch circuit and an electricity testing circuit. The utility model discloses a mounting hole, the mode that adopts the ribbon to tie up makes installing on the machines that the box body can be convenient, through the electroscopic circuit of single-chip computer in the box body, whether appear revealing the electric phenomenon to the machines and respond to, send the information that will sense to safety supervision personnel and machines operating personnel through the antenna, carry out the early warning to the personnel, whole induction process science, accuracy, save safety supervision personnel's energy, greatly ensured personnel's safety.

Description

Induction unit of airborne near-electricity early warning device

Technical Field

The utility model relates to a nearly electric precaution device technical field, concretely relates to induction element of nearly electric precaution device of airborne.

Background

Overhead transmission lines of over 10kV grade are all bare wires, and machine tool electric shock accidents are easy to happen in hoisting construction operation below the high-voltage transmission line. Typical accidents are phase-to-phase short-circuits which can quickly trigger a trip, or single-phase ground faults which do not necessarily trigger a trip. The neutral point grounding system is influenced by the grounding resistance, and the grounding short-circuit current may not be enough to trigger the protection trip; and the neutral point is not grounded, and the grounding current is capacitive current with smaller amplitude. In both cases, the continuous existence of the grounding current can cause serious accidents caused by overheating and firing of machines, and various safety measures are made by relevant departments of electric power aiming at the operation below the high-voltage transmission line. The current electric power safety supervision department often needs to send the special messenger to the place of parking to the environment that there was the operation of lifting by crane below the high voltage transmission line, and the operation condition is noted to the real-time visual inspection to whether the current davit is close to the high voltage source with the intercom in time notice loop wheel machine operating personnel. In the supervision mode, the safety supervision manpower resources are consumed particularly, and the safety supervision manpower input is larger when the construction period is longer; the method has the advantages that the method has serious possibility of missing report under the manual visual inspection mode, when only one safety supervision person is on the site and a plurality of machines and tools work simultaneously, the safety supervision work cannot realize simultaneous consideration of the machines and tools, and in addition, the safety supervision person cannot realize long-time full attention.

SUMMERY OF THE UTILITY MODEL

The above-mentioned not enough to prior art, the utility model provides an induction element of nearly electric precaution device of machine that facilitates installation.

In order to achieve the above object, the utility model adopts the following technical scheme:

the induction unit comprises a box body, wherein a single chip microcomputer and a battery for supplying power are arranged in the box body; the box body is provided with a working indicator light, an antenna and a charging interface; the work indicator light, the antenna and the charging interface are respectively and electrically connected with the single chip microcomputer; the frame of the box body is provided with a mounting hole; the single chip microcomputer comprises an MCU controller, and the MCU controller is respectively connected with a storage module, a wireless communication module, a self-reset switch circuit and an electricity testing circuit.

Further, the self-reset switch circuit comprises an SN74 chip, a pin 4 of the SN74 chip is connected with a pin G of a field effect transistor Q2, and a resistor R9 is arranged between the pin G and the pin S of the field effect transistor Q2;

a D pin of the field effect transistor Q2 is sequentially connected with a resistor R3 and a resistor R1; the resistor R1 is connected with a field effect transistor Q3 in parallel, and a G pin of the field effect transistor Q3 is connected between the resistor R1 and the resistor R3; a pin D of the field effect transistor Q3 is connected with a terminal TP 3;

a D pin of the field-effect tube Q2 is connected with the MCU controller, and a diode D1 is arranged between the D pin of the field-effect tube Q2 and the MCU controller; the No. 3 pin and the No. 1 pin of the SN74 chip are respectively connected with the MCU controller, and the No. 3 pin and the No. 1 pin of the SN74 chip are respectively connected with a VCC end through a resistor R30 and a resistor R51; the 2 nd pin and the 6 th pin of the SN74 chip are both grounded, and a capacitor C18 is arranged between the 2 nd pin and the 5 th pin of the SN74 chip.

Furthermore, the electricity checking circuit comprises a JW0818 chip, a 1 st pin and a 2 nd pin of the JW0818 chip are respectively connected with a resistor R19 and a resistor R18, a capacitor C20 and a capacitor C21 are connected in parallel on the resistor R18, and a capacitor C25 is arranged between the capacitor C20 and the capacitor C21; the resistor R19 and the resistor R18 are connected with the resistor R22, the resistor R25, the resistor R26, the resistor R27 and the resistor R28 which are connected in parallel; the resistor R22, the resistor R25, the resistor R26, the resistor R27 and the resistor R28 are respectively connected with the MCU controller; and TS5A4594 chips are arranged between the resistor R22, the resistor R25, the resistor R26, the resistor R27, the resistor R28 and the MCU controller.

Further, the MCU controller is also connected with a crystal oscillator module.

The utility model has the advantages that:

the utility model discloses a mounting hole, the mode that adopts the ribbon to tie up makes installing on the machines that the box body can be convenient, through the electroscopic circuit of single-chip computer in the box body, whether appear revealing the electric phenomenon to the machines and respond to, send the information that will sense to safety supervision personnel and machines operating personnel through the antenna, carry out the early warning to the personnel, whole induction process science, accuracy, save safety supervision personnel's energy, greatly ensured personnel's safety.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic block diagram of a single chip microcomputer;

FIG. 3 is a circuit diagram of a self reset switching circuit;

FIG. 4 is a circuit diagram of an electroscopic circuit;

fig. 5 is a circuit diagram of the TS5a4594 chip.

Wherein, 1, a box body; 2. a work indicator light; 3. an antenna; 4. a charging interface; 5. and (7) installing holes.

Detailed Description

The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and various changes may be made apparent to those skilled in the art within the spirit and scope of the present invention as defined and defined by the appended claims.

As shown in fig. 1, the induction unit of the airborne near-electric early warning device comprises a box body 1, wherein a single chip microcomputer and a battery for supplying power are arranged in the box body 1; the box body 1 is provided with a working indicator lamp 2, two antennas 3 and a charging interface 4; the work indicator lamp 2, the two antennas 3 and the charging interface 4 are respectively and electrically connected with the single chip microcomputer; the frame of the box body 1 is provided with a mounting hole 5. The mounting holes 5 are two, and the two mounting holes 5 are symmetrically arranged on two sides of the box body 1. The number of antennas 3 may also be 1, 3 or 4. The sensor is fixed on the machine after passing through the mounting hole 5 by a binding belt or a binding wire, and a sensing unit is arranged on the machine at a certain distance according to actual conditions. After the machine finishes hanging construction operation, the induction unit is recovered and stored by unfastening the binding belt, so that the damage caused by long-time damage on the surface of the machine is avoided.

As shown in fig. 2, the single chip microcomputer includes an MCU controller, and the MCU controller is connected with a storage module, a wireless communication module, a self-reset switch circuit, and an electricity testing circuit, respectively. The MCU controller is an STM32F0 chip.

As shown in fig. 3, the self-reset switch circuit comprises an SN74 chip, a pin 4 of the SN74 chip is connected with a pin G of a field effect transistor Q2, and a resistor R9 is arranged between the pin G and the pin S of the field effect transistor Q2; a resistor R3 and a resistor R1 are sequentially arranged at a pin D of the field effect transistor Q2; the resistor R1 is connected with a field effect transistor Q3 in parallel, and a G pin of the field effect transistor Q3 is connected between the resistor R1 and the resistor R3; the D pin of the field effect transistor Q3 is connected to the terminal TP 3; a D pin of the field-effect tube Q2 is connected with the MCU controller, and a diode D1 is arranged between the D pin of the field-effect tube Q2 and the MCU controller; diode D1 is of the type BAT54C, which includes two upper and lower diodes as shown in fig. 4. The No. 3 pin and the No. 1 pin of the SN74 chip are respectively connected with the MCU controller, and a resistor R30 and a resistor R51 are arranged between the No. 3 pin and the No. 1 pin of the SN74 chip; the 2 nd pin and the 6 th pin of the SN74 chip are both grounded, and a capacitor C18 is arranged between the 2 nd pin and the 5 th pin of the SN74 chip.

The working principle of the self-reset switch circuit is as follows:

when the POWER switch is not pressed down, a unit POWER switch key signal (DEVICE _ POWER _ BUTTON) is 0, a diode below a diode D1 is firstly conducted, a multipurpose switch control signal (MULTII _ ON/OFF _ CTR) is changed into 0, a field effect transistor Q2 is conducted, and VCC is electrified to 12V; the power switch is continuously pressed and not released, the singlechip has 3.3V electricity, a program can be programmed, and the upper diode of the diode D1 starts to be conducted; when the single chip microcomputer DETECTs that the power SWITCH state detection signal (SWITCH _ STATUS _ DETECT) changes from high to low, and knows that the button is pressed, the MCU controller power control pin signal (ON/OFF _ CPU _ CTR) is changed to high (default power-ON setting is low), the field effect transistor Q2 is conducted, the MULTI-purpose SWITCH control signal (MULTII _ ON/OFF _ CTR) continues to be low, the state of the MULTI-purpose SWITCH control signal is locked, the field effect transistor Q3 continues to be conducted, and the single chip board continues to be powered. At this time, the power SWITCH can be released, the system continues to be powered, the diode above the diode D1 is not conducted, and the single chip microcomputer DETECTs that the power SWITCH state detection signal (SWITCH _ STATUS _ DETECT) changes from low to high.

If the power-OFF operation is required, the power SWITCH is pressed for a long time, the diode above the diode D1 is conducted, the single chip microcomputer DETECTs that a power SWITCH state detection signal (SWITCH _ STATUS _ DETECT) changes from high to low, and when the power SWITCH state detection signal is known to be a power-OFF instruction, a power control pin signal (ON/OFF _ CPU _ CTR) of the MCU controller is pulled down, the field effect transistor Q2 is not conducted, when the key is released, the field effect transistor Q1 is not conducted, the system 12V is not powered ON, and the power-OFF operation is completed.

As shown in fig. 4-5, the electricity verification circuit includes a JW0818 chip, a resistor R19 and a resistor R18 are arranged between a 1 st pin and a 2 nd pin of the JW0818 chip, a capacitor C20 and a capacitor C21 are connected in parallel to the resistor R18, and a capacitor C25 is arranged between the capacitor C20 and the capacitor C21; a resistor R22, a resistor R25, a resistor R26, a resistor R27 and a resistor R28 are arranged between the resistor R19 and the resistor R18 in parallel; the resistor R22, the resistor R25, the resistor R26, the resistor R27 and the resistor R28 are respectively connected with the MCU controller; and TS5A4594 chips are arranged between the resistor R22, the resistor R25, the resistor R26, the resistor R27, the resistor R28 and the MCU controller. In FIG. 4, terminal A is connected to terminal B of the TS5A4594 chip in FIG. 5.

The utility model discloses a mounting hole 5, the mode that adopts the ribbon to tie up makes installing on the machines that box body 1 can be convenient, through the electric circuit of testing of singlechip in box body 1, whether appear revealing the electric phenomenon to the machines and respond to, send the information that will sense to safety supervision personnel and machines operating personnel through antenna 3, carry out the early warning to the personnel, whole induction process science, accuracy, save safety supervision personnel's energy, greatly ensured personnel's safety.

Claims

1. The induction unit of the onboard near-electricity early warning device is characterized by comprising a box body (1), wherein a single chip microcomputer and a battery for supplying power are arranged in the box body (1); the box body (1) is provided with a work indicator lamp (2), an antenna (3) and a charging interface (4); the work indicator lamp (2), the antenna (3) and the charging interface (4) are respectively and electrically connected with the single chip microcomputer; the frame of the box body (1) is provided with a mounting hole (5); the single chip microcomputer comprises an MCU controller, and a storage module, a wireless communication module, a self-reset switch circuit and an electricity testing circuit are connected to the MCU controller respectively.

2. The sensing unit of the airborne near-electric early warning device according to claim 1, wherein the self-reset switch circuit comprises an SN74 chip, a4 th pin of the SN74 chip is connected with a G pin of a field effect transistor Q2, and a resistor R9 is arranged between the G pin and an S pin of the field effect transistor Q2;

a D pin of the field effect transistor Q2 is sequentially connected with a resistor R3 and a resistor R1; the resistor R1 is connected with a field effect transistor Q3 in parallel, and a G pin of the field effect transistor Q3 is connected between the resistor R1 and the resistor R3; the D pin of the field effect transistor Q3 is connected with a terminal TP 3;

a D pin of the field-effect transistor Q2 is connected with the MCU controller, and a diode D1 is arranged between the D pin of the field-effect transistor Q2 and the MCU controller; the No. 3 pin and the No. 1 pin of the SN74 chip are respectively connected with an MCU controller, and the No. 3 pin and the No. 1 pin of the SN74 chip are respectively connected with a VCC end through a resistor R30 and a resistor R51; the 2 nd pin and the 6 th pin of the SN74 chip are both grounded, and a capacitor C18 is arranged between the 2 nd pin and the 5 th pin of the SN74 chip.

3. The sensing unit of the airborne near-electric early warning device according to claim 1, wherein the electricity testing circuit comprises a JW0818 chip, the 1 st pin and the 2 nd pin of the JW0818 chip are respectively connected with a resistor R19 and a resistor R18, a capacitor C20 and a capacitor C21 are connected in parallel on the resistor R18, and a capacitor C25 is arranged between the capacitor C20 and the capacitor C21; the resistor R19 and the resistor R18 are connected with a resistor R22, a resistor R25, a resistor R26, a resistor R27 and a resistor R28 which are connected in parallel; the resistor R22, the resistor R25, the resistor R26, the resistor R27 and the resistor R28 are respectively connected with the MCU controller; and TS5A4594 chips are arranged between the resistor R22, the resistor R25, the resistor R26, the resistor R27, the resistor R28 and the MCU controller.

4. The sensing unit of the airborne near-electric early warning device according to claim 1, wherein a crystal oscillator module is further connected to the MCU controller.