CN214375150U

CN214375150U - Detection device based on relay control unit of test machine

Info

Publication number: CN214375150U
Application number: CN202120315344.7U
Authority: CN
Inventors: 彭海东; 张尚飞; 张永银; 穆云飞
Original assignee: Nanjing Microbonding Semiconductor Co ltd
Current assignee: Nanjing Microbonding Semiconductor Co ltd
Priority date: 2021-02-03
Filing date: 2021-02-03
Publication date: 2021-10-08
Anticipated expiration: 2031-02-03

Abstract

The utility model relates to a detection device based on relay control unit in a testing machine, which is applied to the technical field of relay detection and solves the technical problem of relays in a control system, and comprises a power supply and a detection loop, wherein the power supply forms a closed loop with the VCC end of a relay through a wire; the detection circuit comprises a detection power supply and an indicator light, and the detection power supply and the indicator light are electrically connected with a normally open contact of the relay through leads; when the relay is in a working state, the normally open contact of the relay is closed, and the indicator light is turned on after the detection loop is closed. The utility model discloses have the design through detecting return circuit, whether the staff of being convenient for in time knows the relay and damages, ensures that the test machine is in the effect to the accuracy of semiconductor product and other electric product testing results.

Description

Detection device based on relay control unit of test machine

Technical Field

The utility model relates to a technical field that the relay detected, more specifically say, it relates to a detection device based on relay control unit in the test machine.

Background

The relay is an automatic switch element with an isolation function, is widely applied to remote control, remote measurement, communication, automatic control, electromechanical integration and power electronic equipment, and is one of the most important control elements. Since the semiconductor products are required to be subjected to the energization detection, a tester for the semiconductor products is required, and the tester needs a test circuit using a relay to control the semiconductor.

If the relay control unit has problems, the detection circuit and the peripheral circuit of the whole testing machine will have problems, the test result of the product is inaccurate, the function test of the product is affected, and because the damage time of the relay is difficult to determine, a detection device is required to be involved to determine that all relays can normally work in the process of detecting the semiconductor product by the testing machine.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a detection device based on relay control unit in test machine, its advantage is, through the design in detection return circuit, whether the staff of being convenient for in time knows the relay and damages, ensures that the test machine is at the accuracy to semiconductor product and other electric product testing results.

The above technical purpose of the present invention can be achieved by the following technical solutions: a detection device based on a relay control unit of a testing machine comprises a power supply and a detection loop, wherein the power supply forms a closed loop with a VCC end of a relay through a lead; the detection circuit comprises a detection power supply and an indicator light, and the detection power supply and the indicator light are electrically connected with a normally open contact of the relay through leads; when the relay is in a working state, the normally open contact of the relay is closed, and the indicator light is turned on after the detection loop is closed.

Further setting: the indicator light is specifically a light emitting diode.

Further setting: the intelligent detection device is characterized by further comprising a PCB for mounting a plurality of relays, the indicating lamps are fixed on the PCB and correspond to the relays one to one, and each relay is independently connected with the detection power supply and the indicating lamp in series.

Further setting: and the PCB is provided with a wiring terminal strip.

Further setting: the lead is etched in the PCB, and the relay and the indicator lamp are welded on the PCB.

Further setting: the voltage of the detection power supply is 3V-3.5V.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. through the design of the detection loop, workers can know whether the relay is damaged in time conveniently, and the accuracy of the test machine on the detection results of semiconductor products and other electrical products is ensured;

2. because the number of the relays is large, each relay is provided with an independent detection loop, and the state of each relay can be more intuitively known.

Drawings

Fig. 1 is a schematic structural view of a relay of the present embodiment;

fig. 2 is a schematic structural diagram of a circuit of the single relay of the present embodiment in an inoperative state;

fig. 3 is a schematic structural diagram of a circuit of the single relay of the present embodiment in an operating state;

FIG. 4 is a schematic structural diagram of synchronous detection of a plurality of relays in the present embodiment;

fig. 5 is a schematic structural view of the entire three-dimensional structure of the present embodiment.

In the figure: 1. a relay; 2. a PCB board; 3. a terminal block; 4. and an indicator light.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example (b): referring to fig. 1, a relay is provided with four sets of terminals, which are a VCC power supply terminal, a normally closed contact, a common contact, and a normally open contact. When the relay does not work, the normally closed contact and the common contact are in contact conduction, and the normally open contact and the common contact are separated to be disconnected to break.

Referring to fig. 2-5, a detection device based on a control unit of a relay 1 in a testing machine comprises a power supply and a detection loop, wherein the power supply forms a closed loop with a VCC end of a relay through a lead; the detection circuit comprises a detection power supply and an indicator lamp 4, the detection power supply and the indicator lamp 4 are in electrical signal connection with a normally open contact of the relay 1 through leads, the specific wiring mode is that the anode of the indicator lamp is in electrical signal connection with the normally open contact of the relay through the leads, and the cathode of the indicator lamp is grounded; the positive pole of the detection power supply is in electric signal connection with the common contact through a lead, the negative pole of the detection power supply is grounded, and when the detection power supply and the indicator lamp are grounded simultaneously, the detection power supply and the indicator lamp 4 form a closed loop.

Referring to fig. 2-5, when the relay 1 is in the non-operating state, the normally open contact of the relay 1 is disconnected from the common contact, the detection loop is in the open circuit state, and the indicator light 4 is not lighted. When the relay 1 is in a working state, the normally closed contact and the normally open contact can change the state of the relay, the normally closed contact and the common contact are separated to be in an open circuit state, and otherwise, the normally open contact is in a conducting state after being contacted with the common contact. Therefore, when the tester is used for detecting the semiconductor, the relay 1 is in a working state, and the detection power supply can supply power to the indicator lamp 4, so that the indicator lamp 4 can be lightened, and the relay 1 is indicated to normally run and is not damaged; if the indicator lamp 4 is not lighted after the test machine works, the relay 1 is damaged. This enables the operator to know the state of the relay 1 in time.

Referring to fig. 2-5, the indicator light 4 is embodied as a light emitting diode. The voltage of the detection power supply corresponding to the light emitting diode is between 3 and 3.5V.

Referring to fig. 2-5, further including PCB 2, relay 1 sets up a plurality of, and the preferred embodiment is 32, and pilot lamp 4 is also 32, and with relay 1 one-to-one, each relay 1 all independently with detect power and pilot lamp 4 series connection, can detect alone to each relay 1 like this. The wire sculpture is in PCB board 2's inside, and relay 1 and pilot lamp 4 weld on PCB board 2 through the soldering, are equipped with binding post row 3 on PCB board 2, and binding post row 3 is preferred to be 64 ox horn sockets, and the terminal row switches on with the inside wire of PCB board 2. In the use process, the circuit of a testing machine controlled by the relay 1 and a working power supply and a detection power supply required by the relay 1 are connected with the PCB 2 through the wiring terminal block 3.

The implementation principle of the above embodiment is as follows: when the relay 1 is in an inoperative state, the normally open contact of the relay 1 is separated from the common contact, the detection loop is in an open circuit state, and the indicator light 4 is not on. When the relay 1 is in a working state, the normally closed contact and the normally open contact can change the state of the relay, the normally closed contact and the common contact are separated to be in an open circuit state, and otherwise, the normally open contact is in a conducting state after being contacted with the common contact. Therefore, when the tester is used for detecting the semiconductor, the relay 1 is in a working state, and the detection power supply can supply power to the indicator lamp 4, so that the indicator lamp 4 can be lightened, and the relay 1 is indicated to normally run and is not damaged; if the indicator lamp 4 is not lighted after the test machine works, the relay 1 is damaged. This enables the operator to know the state of the relay 1 in time.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a detection device based on relay control unit in test machine which characterized in that: the detection circuit comprises a power supply and a detection loop, wherein the power supply forms a closed loop with a VCC end of a relay through a lead; the detection loop comprises a detection power supply and an indicator light (4), and the detection power supply and the indicator light (4) are connected with a normally open contact electric signal of the relay through leads; when the relay is in a working state, the normally open contact of the relay is closed, and the indicator lamp (4) is lightened after the detection loop is closed.

2. The tester-based relay control unit detection apparatus of claim 1, wherein: the indicator light (4) is a light emitting diode.

3. The tester-based relay control unit detection apparatus of claim 1, wherein: still including PCB board (2) that is used for installing a plurality of relays, pilot lamp (4) are fixed on PCB board (2), pilot lamp (4) and relay one-to-one, each relay all alone with detect power and pilot lamp (4) and establish ties.

4. The tester-based relay control unit detection apparatus of claim 3, wherein: and the PCB (2) is provided with a wiring terminal strip (3).

5. The tester-based relay control unit detection apparatus of claim 3, wherein: the lead is etched in the PCB (2), and the relay and the indicator light (4) are welded on the PCB (2).

6. The tester-based relay control unit detection apparatus of claim 2, wherein: the voltage of the detection power supply is 3V-3.5V.