CN211427121U

CN211427121U - Relay contact pneumatic detection circuit based on single chip microcomputer

Info

Publication number: CN211427121U
Application number: CN202020380671.6U
Authority: CN
Inventors: 濮霞; 陶炳坤; 郎宾; 黄天辰; 段荣霞; 李楠
Original assignee: Army Engineering University of PLA
Current assignee: Army Engineering University of PLA
Priority date: 2020-03-24
Filing date: 2020-03-24
Publication date: 2020-09-04
Anticipated expiration: 2030-03-24

Abstract

The utility model discloses a relay contact pneumatic detection circuit based on a single chip microcomputer, which comprises a relay plugboard and a detection board; the relay plug board comprises a board seat and a wire groove fixed on the bottom surface of the board seat; the plate seat is provided with a seat hole opposite to the relay pin; a U-shaped elastic sheet is embedded and fixed in the seat hole; a conducting strip is fixed at the bottom of the U-shaped elastic sheet; the conducting plate penetrates out of the plate seat and extends to the wire slot; a wire welded with the conducting strip is arranged in the wire slot; the lead is connected to the female wiring head; the detection plate comprises a plate body; the plate body is provided with a singlechip minimum system; and a DC power supply for supplying power to the minimum system of the singlechip through a power switch; the I/O port of the minimum system of the single chip microcomputer is respectively and electrically connected with the relay switch circuit and the relay trigger button; the utility model discloses a pneumatic detection circuitry of relay contact based on singlechip, it can be pegged graft the check point fast with the relay pin, and the relay state passes through LED and can judge directly perceived.

Description

Relay contact pneumatic detection circuit based on single chip microcomputer

Technical Field

The utility model relates to a relay detection circuitry, concretely relates to pneumatic detection circuitry of relay contact based on singlechip belongs to relay detection circuitry technical field.

Background

The relay is accomplishing the processing back, need leave factory to it and detect, with the discovery bad product, because in the course of working, the relay needs multichannel process, consequently can produce bad product sometimes, the bad product main problems is the contact failure of product, the reason of production is mainly because the metal stress problem of structure, the unstable and the anaerobic copper contact's of spring strain stain causes, current relay testing process, it is more loaded down with trivial details to install the detection position with the relay pin that waits to detect, contact failure phenomenon appears easily in the pin, in addition, current detection mainly adopts for the relay signal, listen the inside actuation of relay and disconnection sound, lead to easily detecting the error appearance.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a pneumatic detection circuitry of relay contact based on singlechip can be with the relay pin quick plug-in test point to utilize the singlechip to produce switching signal, control relay actuation and disconnection, actuation and disconnection carry out judgement directly perceived through LED, detection mode is simple and convenient.

The utility model discloses a relay contact pneumatic detection circuit based on singlechip, which comprises a relay plugboard and a detection board; the relay plug board comprises a board seat and a wire groove fixed on the bottom surface of the board seat; the plate seat is provided with a seat hole opposite to the relay pin; a U-shaped elastic sheet is embedded and fixed in the seat hole; a conducting strip is fixed at the bottom of the U-shaped elastic sheet; the conducting plate penetrates out of the plate seat and extends to the wire slot; a wire welded with the conducting strip is arranged in the wire slot; the lead is connected to the female wiring head; during detection, each pin of the relay is inserted into the U-shaped elastic sheet on the inner side of the corresponding seat hole, so that the pin is tightly pressed with the U-shaped elastic sheet, and the U-shaped elastic sheet is connected to the female head through the conducting sheet; the detection plate comprises a plate body; the plate body is provided with a singlechip minimum system; and a DC power supply for supplying power to the minimum system of the singlechip through a power switch; the I/O port of the minimum system of the single chip microcomputer is respectively and electrically connected with the relay switch circuit and the relay trigger button; the ground end of the power supply is connected with a wiring male head which is connected with the wiring female head in an inserting mode through a load and an LED; the wiring male head is also electrically connected with the output end of the power switch and the relay switch circuit respectively; during connection, the male connection head and the female connection head are directly plugged, and connection of the detection plate and the plugging plate is completed; when detecting, switch on, press relay trigger button, when the singlechip detected low level or trailing edge signal, the relay switch circuit signal is given to the singlechip minimum system, and carry out the time delay, relay switch circuit gives relay control end signal, two contacts of normally open relay are closed, its contact switch disconnection of normally closed relay, thereby make DC power supply for load and LED power supply or disconnection power supply, thereby LED lights or closes, the detector can whether closing or disconnection of visual observation relay, the time delay is arrived the back, a reverse signal of relay switch circuit, the singlechip waits for next relay trigger button's triggering.

As a preferred embodiment, after the female terminal and the male terminal are plugged, the relay switch circuit is electrically connected with a U-shaped elastic sheet at the control end of the relay; and the power switch and the load are respectively connected with the U-shaped elastic sheet at the action end of the relay.

As a preferred embodiment, the detection board further comprises a nand gate electrically connected to the load and the minimum system of the single chip microcomputer; and a dial switch electrically connected between the ground and the minimum system of the singlechip; the system comprises a singlechip minimum system, a buzzer circuit, a normal indicating circuit and a fault indicating circuit, wherein the buzzer circuit, the normal indicating circuit and the fault indicating circuit are electrically connected between the singlechip minimum system and a power supply; during detection, a detection signal is sent to the minimum system of the single chip microcomputer by the NAND gate, the minimum system of the single chip microcomputer counts the number of times of low level, a normal indicating circuit signal is sent after the counted number is met, and if the number of times is not met, the minimum system of the single chip microcomputer gives a fault indicating circuit and a buzzer circuit to give an audible and visual alarm to prompt the relay to have a fault.

In a preferred embodiment, the U-shaped elastic sheet is oppositely pressed with a corrugated groove, and the corrugated groove can clamp the pins.

As a preferred embodiment, the minimum system of the single chip microcomputer is composed of an 89C52 single chip microcomputer and a peripheral circuit thereof.

Compared with the prior art, the utility model discloses a pneumatic detection circuitry of relay contact based on singlechip adopts relay plugboard and pick-up plate to carry out relay grafting and relay detection respectively, and it can be with the quick plug-in of relay pin to utilize the singlechip to produce switching signal, control relay actuation and disconnection, actuation and disconnection carry out visual judgement and singlechip minimum system through LED and carry out self-checking alarm, and the detection mode is simple and convenient.

Drawings

Fig. 1 is a schematic diagram of the structure of the top surface of the relay socket board of the present invention.

Fig. 2 is a schematic view of the mounting structure of the U-shaped spring plate of the relay socket board of the present invention.

Fig. 3 is a schematic diagram of a structure of a detection plate according to embodiment 1 of the present invention.

Fig. 4 is a schematic diagram of a structure of a detection plate according to embodiment 2 of the present invention.

Detailed Description

Example 1:

the relay contact pneumatic detection circuit based on the single chip microcomputer as shown in the figures 1 to 3 comprises a relay plug board and a detection board; the relay plug board comprises a board seat 1 and a wire groove 2 fixed on the bottom surface of the board seat; the plate seat 1 is provided with a seat hole 3 opposite to the relay pin; a U-shaped elastic sheet 4 is embedded and fixed in the seat hole 3; a conducting strip 5 is fixed at the bottom of the U-shaped elastic sheet 4; the conducting plate 5 penetrates out of the plate seat and extends to the wire slot 2; a wire 6 welded with the conducting strip is arranged in the wire slot 2; the lead 6 is connected to a female terminal 7; during detection, each pin of the relay is inserted into the U-shaped elastic sheet on the inner side of the corresponding seat hole, so that the pin is tightly pressed with the U-shaped elastic sheet, and the U-shaped elastic sheet is connected to the female head through the conducting sheet; the detection plate comprises a plate body 8; the plate body 8 is provided with a singlechip minimum system CPU; and the direct current power supply Vcc supplies power to the minimum system CPU of the singlechip through a power switch k 1; the I/O port of the CPU of the minimum system of the single chip microcomputer is respectively and electrically connected with a relay switch circuit QA and a relay trigger button k 2; the ground end of the power supply Vcc is connected to a wiring male head 9 which is connected with a wiring female head in an inserted mode through a load R and an LED; the wiring male head 9 is also electrically connected with the output end of the power switch k1 and the relay switch circuit QA respectively; during connection, the male connection head and the female connection head are directly plugged, and connection of the detection plate and the plugging plate is completed; when detecting, switch on, press relay trigger button, when the singlechip detected low level or trailing edge signal, the relay switch circuit signal is given to the singlechip minimum system, and carry out the time delay, relay switch circuit gives relay control end signal, two contacts of normally open relay are closed, its contact switch disconnection of normally closed relay, thereby make DC power supply for load and LED power supply or disconnection power supply, thereby LED lights or closes, the detector can whether closing or disconnection of visual observation relay, the time delay is arrived the back, a reverse signal of relay switch circuit, the singlechip waits for next relay trigger button's triggering.

After the female connection terminal 7 and the male connection terminal 9 are connected in an inserted manner, the relay switch circuit QA is electrically connected with the U-shaped elastic sheet 4 at the control end of the relay; the power switch k1 and the load R are respectively connected with the U-shaped elastic sheet 4 of the action end of the relay.

Example 2:

as shown in fig. 4, the relay contact pneumatic detection circuit based on the single chip microcomputer, the detection board further comprises a nand gate D3 electrically connected to the load and the minimum system of the single chip microcomputer; and a dial switch K3 electrically connected between the ground and the minimum system of the single chip microcomputer; the system comprises a buzzer circuit D6, a normal indicating circuit D5 and a fault indicating circuit D4 which are electrically connected between a minimum system of the single chip microcomputer and a power supply, wherein the minimum system of the single chip microcomputer detects a dial switch so as to read a key value, determine the detection times, detect the preset times after a relay trigger button is pressed, give a signal to a relay switch circuit during detection, delay time, give a reverse signal to the relay switch circuit after the delay time is finished, and delay time to finish the detection of the times; during detection, a detection signal is sent to the minimum system of the single chip microcomputer by the NAND gate, the minimum system of the single chip microcomputer counts the number of times of low level, a normal indicating circuit signal is sent after the counted number is met, and if the number of times is not met, the minimum system of the single chip microcomputer gives a fault indicating circuit and a buzzer circuit to give an audible and visual alarm to prompt the relay to have a fault.

The U-shaped elastic sheet 4 is opposite to a pressed corrugated groove 41, and the pin can be clamped by the corrugated groove.

The minimum system CPU of the single chip microcomputer is composed of an 89C52 single chip microcomputer and peripheral circuits thereof.

The above-mentioned embodiment is only the preferred embodiment of the present invention, so all the equivalent changes or modifications made by the structure, features and principles of the present invention are included in the claims of the present invention.

Claims

1. The utility model provides a relay contact pneumatic detection circuit based on singlechip which characterized in that: the relay detection device comprises a relay plug board and a detection board; the relay plug board comprises a board seat and a wire groove fixed on the bottom surface of the board seat; the plate seat is provided with a seat hole opposite to the relay pin; a U-shaped elastic sheet is embedded and fixed in the seat hole; a conducting strip is fixed at the bottom of the U-shaped elastic sheet; the conducting plate penetrates out of the plate seat and extends to the wire slot; a wire welded with the conducting strip is arranged in the wire slot; the lead is connected to the female wiring head; the detection plate comprises a plate body; the plate body is provided with a singlechip minimum system; and a DC power supply for supplying power to the minimum system of the singlechip through a power switch; the I/O port of the minimum system of the single chip microcomputer is respectively and electrically connected with the relay switch circuit and the relay trigger button; the ground end of the power supply is connected with a wiring male head which is connected with the wiring female head in an inserting mode through a load and an LED; the wiring male head is also electrically connected with the output end of the power switch and the relay switch circuit respectively.

2. The relay contact pneumatic detection circuit based on the single chip microcomputer of claim 1, wherein: after the female connection terminal and the male connection terminal are connected in an inserted manner, the relay switch circuit is electrically connected with a U-shaped elastic sheet at the control end of the relay; and the power switch and the load are respectively connected with the U-shaped elastic sheet at the action end of the relay.

3. The relay contact pneumatic detection circuit based on the single chip microcomputer of claim 1, wherein: the detection board also comprises a NAND gate electrically connected with the load and the minimum system of the single chip microcomputer; and a dial switch electrically connected between the ground and the minimum system of the singlechip; and the buzzer circuit, the normal indicating circuit and the fault indicating circuit are electrically connected between the minimum system of the single chip microcomputer and the power supply.

4. The relay contact pneumatic detection circuit based on the single chip microcomputer of claim 1, wherein: the U-shaped elastic sheet is opposite to a pressed corrugated groove.

5. The relay contact pneumatic detection circuit based on the single chip microcomputer of claim 1, wherein: the minimum system of the single chip microcomputer is composed of an 89C52 single chip microcomputer and peripheral circuits thereof.