CN209911454U

CN209911454U - Automatic test system for sensor resistance

Info

Publication number: CN209911454U
Application number: CN201822108991.1U
Authority: CN
Inventors: 余金文; 邓庆文; 林凌斌; 陈国祥; 曾延华
Original assignee: XIAMEN SAN-U OPTRONICS Co Ltd
Current assignee: XIAMEN SAN-U OPTRONICS Co Ltd
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2020-01-07
Anticipated expiration: 2028-12-14

Abstract

The utility model discloses an automatic sensor resistance testing system, which comprises a computer, a singlechip control panel, a testing system, a wiring board and a sensor testing board; the computer is electrically connected with the test system through a feeder line to acquire test data of the test system, the computer controls the single chip microcomputer control panel through a serial port, the single chip microcomputer control panel is electrically connected with the sensor test board through a wiring board, and the single chip microcomputer control panel controls a chip switch on the sensor test board through an I/O port to switch a sensor to be tested; the test system is electrically connected with the chip switch on the sensor test board through a feeder line. The utility model discloses can place several minutes after inserting the product, it is more accurate with the sample comparison test result during the test, can preserve the test data of every product, can once only test 64 products, then change and survey the board and just can carry out the continuous test, improved test speed and reliability greatly.

Description

Automatic test system for sensor resistance

Technical Field

The utility model relates to the field of communication, especially, relate to an automatic test system of sensor resistance.

Background

In optical fiber communication (in sensors), there is a large number of photodetectors (sensors), such as temperature sensors, and a temperature sensor production enterprise has a small daily production amount of thousands, a large number of tens of thousands, or even hundreds of thousands. The traditional test equipment can only test one product at a time, the hand is in contact with the product and has temperature, the test result of the product can be influenced, the efficiency is low, the product can be judged to be recognized only by eyes, the test result cannot be stored, and the test process cannot be tracked. If the sensitivity of each temperature sensor is tested by the above method, a large number of testing instruments are required, and much labor is required, which makes the testing cost of the produced temperature sensors very high. If only the method of sampling test is adopted, the sensitivity (performance) index of each product sold in the market can not be guaranteed to be qualified.

Disclosure of Invention

An object of the utility model is to provide a sensor resistance automatic test system that test speed and reliability are high.

In order to achieve the above object, the technical solution of the present invention is:

the utility model relates to an automatic test system for sensor resistance, which comprises a computer, a singlechip control panel, a test system, a wiring board and a sensor test board; the computer is electrically connected with the test system through a feeder line to acquire test data of the test system, the computer controls the single chip microcomputer control panel through a serial port, the single chip microcomputer control panel is electrically connected with the sensor test board through a wiring board, and the single chip microcomputer control panel controls a chip switch on the sensor test board through an I/O port to switch a sensor to be tested; the test system is electrically connected with a chip switch on the sensor test board through a feeder line; the sensor test board has a plurality (64) of receptacles for insertion of products.

The utility model discloses still include a plurality of (64) LED lamps, a plurality of (64) LED lamps pass through the feeder and are connected with the single chip microcomputer control board electricity, the demonstration of single chip microcomputer control board IO mouth control LED lamp.

The socket is a golden finger slot.

The sensor test board has 64 receptacles for insertion of products.

After the scheme is adopted, the temperature sensor is very sensitive to temperature, so that the test is carried out in a place with relatively fixed temperature, the sensor is provided with 4 pins and two pairs of resistors (R-CHIP and R-NTC), the resistance value of the R-CHIP is fixed and unchanged, and the resistance value of the R-NTC can change along with the change of the temperature. The utility model discloses can place several minutes after inserting the product, wait to detach the test after the temperature influences, it is more accurate with sample comparison test result during the test, can preserve the test data of every product, can once only test 64 products, then change and survey the board and just can carry out the continuous test, improved test speed and reliability greatly.

The invention will be further described with reference to the accompanying drawings and specific embodiments.

Drawings

Fig. 1 is a block diagram of the present invention.

Detailed Description

As shown in FIG. 1, the utility model relates to a sensor resistance automatic test system, survey test panel 5, a plurality of LED lamp 6 including computer 1, singlechip control panel 2, test system 3, wiring board 4, sensor.

The computer 1 is electrically connected with the test system 3 through a feeder line to acquire test data of the test system 3, the computer 1 controls the singlechip control board 2 through a serial port, the singlechip control board 2 is electrically connected with the sensor test board 5 through a wiring board 4, and the singlechip control board 2 controls a chip switch on the sensor test board 5 through an I/O port to switch a sensor to be tested; the test system 3 is electrically connected with a chip switch on the sensor test board 5 through a feeder line; the sensor test board 5 has 64 sockets for inserting products, and the sockets are golden finger slots.

The 64 LED lamps 6 are electrically connected with the single chip microcomputer control panel 2 through feeder lines, and the display of the LED lamps 6 is controlled by the I/O port of the single chip microcomputer control panel 2.

The sensor test board 5 has 64 receptacles for insertion of products.

The utility model discloses a theory of operation:

because the product TO be tested is a temperature sensor, the product is sensitive TO temperature, the test is carried out in a space with relatively constant temperature, when the PCB is distributed, the 64 products are divided into 4 units by considering the factor, each unit is arranged according TO 4 x 4, one sample is inserted into the middle of each unit (4 samples in total) for comparing resistance values, 16 LED lamps 6 are arranged on the edge of each unit and respectively correspond TO TO (total TO) and are also arranged according TO 4 x 4, and if the product is poor after the test is finished, the LED lamps 6 display red, and indicate a bad position number.

The computer 1 controls the singlechip control board 2 through a serial port, and the singlechip control board 2 controls a chip switch on the sensor test board 5 through an I/O port to switch the sensor to be tested. The 64 sensors are inserted into 64 sockets on the sensor test board 5 and connected to the wiring board by gold fingers. The 2 test devices respectively test two resistance values of each sensor (each sensor has 4 pins) smoothly, the test result is compared with the sample of each unit to judge whether the test result is qualified, and then the test data of each product is transmitted to the computer 1 through a GPIB (general purpose interface bus) line. After the 64 sensors are tested, the software of the computer 1 controls the LED lamp to display the bad result through the I/O port of the single chip microcomputer.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited thereby, and all equivalent changes and modifications made within the scope of the claims and the specification should be considered within the scope of the present invention.

Claims

1. An automatic test system for sensor resistance is characterized in that: the device comprises a computer, a singlechip control board, a test system, a wiring board and a sensor test board; the computer is electrically connected with the test system through a feeder line to acquire test data of the test system, the computer controls the single chip microcomputer control panel through a serial port, the single chip microcomputer control panel is electrically connected with the sensor test board through a wiring board, and the single chip microcomputer control panel controls a chip switch on the sensor test board through an I/O port to switch a sensor to be tested; the test system is electrically connected with a chip switch on the sensor test board through a feeder line; the sensor test board has a plurality of receptacles for insertion of products.

2. The automatic sensor resistance testing system of claim 1, wherein: the LED lamp is characterized by further comprising a plurality of LED lamps, the LED lamps are electrically connected with the single chip microcomputer control panel through feeders, and the display of the LED lamps is controlled by the I/O port of the single chip microcomputer control panel.

3. The automatic sensor resistance testing system of claim 1, wherein: the socket is a golden finger slot.

4. The automatic sensor resistance testing system of claim 1, wherein: the sensor test board has 64 receptacles for insertion of products.