CN206848324U - A kind of station apparatus of electronic component anti-aging test - Google Patents

Abstract

The utility model discloses a work station device for aging resistance test of electronic components, which comprises a plurality of test product stations connected in series and connected to both ends of a power supply, a photoelectric sensor is installed next to each test product station, and each test product A contactor is connected in parallel at both ends of the station, and the photoelectric sensor and contactor are connected to the controller. The controller is used to collect the position signal of the residual current action circuit breaker handle on the test station sensed by multiple photoelectric sensors, and issue instructions to control the A single contactor is closed. This method is simple, effective, easy to control, and the most important thing is that it can meet the requirements of the standard, so that the whole test can be carried out automatically and completely.

Description

A station device for aging resistance test of electronic components

technical field

The utility model belongs to the field of aging resistance test and relates to a station device for aging resistance test of electronic components.

Background technique

The aging resistance test of electronic components of residual current operated circuit breaker is an indispensable test in the standards of GB16916.1 and GB16917.1. Whether the electronic components can meet the requirements of long-term normal operation.

Test parameters: Three residual current operated circuit breakers are respectively installed on the three stations of the electronic component aging resistance test device (the three stations are connected in series to a power supply), and the residual current operated circuit breaker is connected to the rated current. The voltage on the electronic components is 1.1 times the rated voltage after being placed at an ambient temperature of ±2°C for 168 hours.

Test requirements: At least two residual current operated circuit breakers have completed the 168-hour aging resistance test of electronic components under the above conditions.

However, the existing electronic component aging test devices are basically connected in series with three stations and share a power supply. 1. Voltage fluctuations cause the circuit breaker to trip due to malfunction, causing the entire test circuit to be disconnected and affecting the flow test of other stations.

The solution to this situation is (1) Separate the three stations independently and provide each station with an independent power supply. When the residual current-operated circuit breaker of a certain station occurs due to interference and voltage fluctuations, the circuit breaker malfunctions. Tripping, so that it will not affect the test of other stations; (2) On the basis of three stations connected in series to one power supply, install a photoelectric sensor next to each station and connect a Contactor, when the residual current operated circuit breaker of a certain station trips due to interference and voltage fluctuations, the circuit breaker will not be interrupted through the photoelectric sensor, contactor, and PLC related actions. Flow test, so as not to affect the test of other stations.

The first of the above two methods is high in cost, complex in structure, long in installation time, and takes up space; the second method is low in cost, simple in structure, easy to install and operate, and takes up little space. After a comprehensive comparison, the second method is adopted.

Utility model content

The purpose of this utility model is to provide a station device for the aging resistance test of electronic components, which is used to solve the problem that when a plurality of residual current operated circuit breakers are connected in series to carry out the aging resistance test of electronic components, a certain residual current operated circuit breaker suddenly breaks and causes the test to be interrupted Problems, so that the entire aging test can be carried out automatically and completely.

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

A station device for aging resistance test of electronic components, including a plurality of test stations connected in series and at both ends of a power supply, a photoelectric sensor is installed next to each test station, and the two ends of each test station are connected in parallel A contactor, the photoelectric sensor and the contactor are connected to the controller, and the controller is used to collect the position signal of the residual current-operated circuit breaker handle on the test station sensed by multiple photoelectric sensors, and issue instructions to control the closing of a single contactor respectively.

The controller is PLC.

The position of the photoelectric sensor is adjustable, and can be adjusted up and down, left and right, and front and back according to the position of the handle of the residual current operating circuit breaker.

The controller is also connected with a touch screen, and the touch screen is used for real-time observation of the working status of each test station.

There are three test stations, and the three test stations are connected in series through a three-phase four-wire cable and connected to both ends of a power supply.

Compared with the prior art, the utility model has the following advantages:

The utility model installs a photoelectric sensor and a contactor on the three-station tooling of the existing electronic component aging resistance test station device, and adds a photoelectric sensor, a contactor and PLC program control on the software through the hardware. When a certain When the residual current operated circuit breaker of each station trips due to interference and voltage fluctuations, the circuit breaker malfunctions and trips, and the entire circuit can be tested for uninterrupted flow through the photoelectric sensor, contactor, and related actions of the PLC. Therefore, a method is given to solve the problem of interruption of the test caused by a sudden disconnection of a residual current operated circuit breaker when three residual current operated circuit breakers are connected in series for the aging resistance test of electronic components. This method is simple, effective and easy to control. The most important thing is to meet the requirements of the standard, so that the whole test can be carried out automatically and completely. The specific advantages are as follows:

1) The input cost is low, the structure is simple, the installation is simple, the space occupied is small, the maintenance cost is low and easy to maintain.

2) The control operation of the photoelectric sensor and contactor can be easily realized through the program, and has good reliability.

3) Due to the use of photoelectric sensors, the working status of each test station can be observed in real time on the touch screen.

4) It fully meets the requirements of the test standard, and the whole test can be carried out automatically and completely.

Further, the three photoelectric sensors are respectively installed next to the three stations, which can be adjusted up and down, left and right, forward and backward according to the position of the handle of the residual current action circuit breaker, so that the correct sensing handle position can be sent to the PLC; the three contactors are respectively connected in parallel Behind the three workstations.

Furthermore, due to the use of photoelectric sensors, testers can observe the working status of each test station in real time on the touch screen.

Description of drawings

Figure 1 is a tooling without photoelectric sensors and contactors (three stations in series);

Figure 2 is a tooling with a photoelectric sensor and a contactor (three stations in series).

In the figure: QF1, QF2, QF3 are residual current operated circuit breakers, S1, S2, S3 are circuit breaker handles, G1, G2, G3 are photoelectric sensors, J1, J2, J3 are contactors;

Figure 3 Photoelectric sensor, contactor action flow chart.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail:

The utility model is applied in the anti-aging test of electronic components in the GB16916.1 and GB16917.1 standards. When three residual current action circuit breakers are connected in series to carry out the aging resistance test of electronic components, a certain residual current action circuit breaker suddenly breaks and causes the test to be interrupted. It provides a convenient and reliable solution to the problem, so that the whole test can be carried out automatically and completely.

The utility model is improved on the basis of the existing station device tooling for the anti-aging test of electronic components. The existing station device for the anti-aging test of electronic components: a three-phase four-wire cable connects three test product stations in series Get up and connect to both ends of a power supply (see Figure 1).

As shown in Figure 2, the station device of the electronic component aging resistance test of the utility model, the specific improvement is: a photoelectric sensor (G1, G2, G3) is installed next to each station; A contactor (J1, J2, J3) is connected in parallel behind it. The three photoelectric sensors are respectively installed next to the three stations, and can be adjusted up and down, left and right, forward and backward according to the position of the handle of the residual current action circuit breaker, so as to sense the correct position of the handle to the PLC; this kind of photoelectric sensor is divided into a photoelectric transmitter And the sensing end, the transmitting end continuously emits photoelectric signals, so that the position signal of the test object (three residual current action circuit breakers) can be provided to the PLC. During the test, if the test object is broken, that is, the light beam will be blocked when the operating handle falls At this time, the sensor will output a position signal (break or close) to the PLC, and the PLC will issue a command to control the contactor to close.

As shown in Figure 3, the working principle of the utility model in the test process is as follows:

During the test of the three residual current operated circuit breaker samples (closed position), the residual current operated circuit breaker of a certain station is disturbed, and the voltage fluctuation causes the circuit breaker to malfunction and break. At this time, the photoelectric sensor next to the station Immediately, it will send a signal to the PLC (the test product is broken), and the PLC will give the contactor of the station a closing signal after receiving the signal, and then the contactor will be closed, and at the same time it will give the number of the test product on the touch screen. The whole action is completed very quickly, and the current of the test circuit seems to fluctuate a little, which fully meets the requirements of the standard.

All the above actions are realized through PLC program control. The specific program flow can be seen in Figure 3. From the flow chart, it can be seen that when the handle of a test product at a certain station falls, the contactor behind the station is closed, and the current flows from the contactor. Flow through; when the handle of a test product at a station is closed, the contactor behind the station is broken, and the current flows through the test product.

In summary, the solution provided by the utility model is simple, effective, easy to control, and meets the requirements of the standard.

The above are only preferred embodiments of the present utility model, and are not limited to the implementation scope of the present utility model. All equivalent changes and modifications made according to the scope of the present utility model should be within the technical category of the present utility model.

Claims (5)

1. a kind of station apparatus of electronic component anti-aging test, it is characterised in that be attempted by a both ends of power including series connection Multiple test product stations, the side of each test product station installs a photoelectric sensor, and each test product station both ends is in parallel One contactor, photoelectric sensor and contactor are all connected with controller, and controller senses for gathering multiple photoelectric sensors Test product station on residual current action breaker handle position signal, and send instruction control single contactor to close respectively Close.

2. a kind of station apparatus of electronic component anti-aging test according to claim 1, described controller is PLC.

3. a kind of station apparatus of electronic component anti-aging test according to claim 1, described photoelectric sensor position Put it is adjustable, according to the position of residual current action breaker handle carry out top to bottom, left and right, front and rear regulation.

4. a kind of station apparatus of electronic component anti-aging test according to claim 1, described controller is also with touching Screen connection is touched, touch-screen is used for the working condition that real-time monitored tests each station.

5. a kind of station apparatus of electronic component anti-aging test according to claim 1, described test product station is set Three, three test product stations are together in series by three-phase and four-line cable and are attempted by the both ends of a power supply.