CN214384606U

CN214384606U - Detection system

Info

Publication number: CN214384606U
Application number: CN202022773831.6U
Authority: CN
Inventors: 王江; 张文; 冯磊; 田慧敏
Original assignee: Intelligent Automation Equipment Zhuhai Co Ltd
Current assignee: Intelligent Automation Equipment Zhuhai Co Ltd; Intelligent Automation Zhuhai Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-10-12
Anticipated expiration: 2030-11-26

Abstract

The utility model aims at providing a detection system that work efficiency is high, the degree of accuracy is high and can prevent the condition such as connection error. The utility model comprises a sensor module, an amplification comparison module, a signal reading module, an MCU module and a communication module which are electrically connected in sequence, the sensor module comprises at least two reflective photoelectric sensors which are correspondingly arranged on one side of the product tank to be detected, a connector of a channel corresponding to the corresponding reflection type photoelectric sensor is arranged in the product groove to be detected, the reflection type photoelectric sensor is also electrically connected with an external upper computer, the amplification comparison module amplifies the electric signal output by the reflection type photoelectric sensor and compares the amplified electric signal with a preset value, further outputting digital high and low levels to control the conduction or cut-off of the triode in the amplifying and comparing module, the signal reading module converts the state of the triode into high and low levels to be input into the MCU module, and the MCU module is communicated with an external upper computer through the communication module. The utility model discloses be applied to the technical field of electronic product test.

Description

Detection system

Technical Field

The utility model discloses be applied to the technical field of electronic product test, in particular to detecting system.

Background

The rapid development of technology brings various cool electronic products to human beings, which become an indispensable part of human life, and the stability and reliability of the electronic products are very important, so the testing requirements of consumer electronic devices are gradually increased. The automatic test in-process of circuit board can adopt the synchronous test of a plurality of passageways usually, and for the convenience of the test data tracking of each link, all can laser sculpture or paste the two-dimensional code on the product, sweep the sign indicating number by the tester is manual and type in the host computer, in the memory of the product that awaits measuring need be write in with two-dimensional code information to the host computer in test process, consequently require the product that awaits measuring to accomplish to sweep must put in the test card groove that the two-dimensional code corresponds after the sign indicating number. However, due to the fact that the concentration degree and the proficiency of operators are different, the problem that the bar code of the product to be tested and an actual testing channel are staggered frequently occurs, repeated testing is caused, and testing efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a detection system that work efficiency is high, the degree of accuracy is high and can prevent to connect the mistake.

The utility model adopts the technical proposal that: the utility model comprises a sensor module, an amplification comparison module, a signal reading module, an MCU module and a communication module which are electrically connected in sequence, the sensor module comprises at least two reflective photoelectric sensors which are correspondingly arranged on one side of the product tank to be detected, a connector of a channel corresponding to the corresponding reflection type photoelectric sensor is arranged in the product groove to be detected, the reflection type photoelectric sensor is also electrically connected with an external upper computer, the amplification comparison module amplifies the electric signal output by the reflection type photoelectric sensor and compares the amplified electric signal with a preset value, further outputting digital high and low levels to control the conduction or cut-off of the triode in the amplifying and comparing module, the signal reading module converts the state of the triode into high and low levels to be input into the MCU module, and the MCU module is communicated with an external upper computer through the communication module.

According to the scheme, the reflective photoelectric sensors are arranged on one side of each connector in the test equipment, so that the reflective photoelectric sensors are triggered by a reflected light beam of a product to be tested, the reflective photoelectric sensors convert analog signals of the photosensitive resistors into electric signals, the converted electric signals are amplified and compared through the amplification and comparison module, the signals are compared with the threshold value preset in the amplification and comparison module by the MCU module, and the on-off of the triode is controlled. After a product is placed, the intensity of a signal received by the reflective photoelectric sensor is greater than a preset threshold value, the comparator outputs a high level, and the triode is conducted; otherwise, when the product is not placed, the signal intensity received by the reflection type photoelectric sensor is smaller than the preset threshold value, the comparator outputs a low level, and the triode is cut off. And the signal reading module reads the state of the triode and outputs corresponding high and low levels. And the MCU module feeds back the placing state of the corresponding channel to the upper computer through the communication module after receiving the level. And then realize accurate detection, whether the product targets in place, improve work efficiency, match with the passageway of host computer simultaneously, prevent that the product from misplacing. The communication module is a common USB data communication module.

Preferably, the amplifying and comparing module further comprises an operational amplifier, a comparator and a DAC chip which are electrically connected in sequence, and the DAC chip is electrically connected with the MCU module.

According to the scheme, the operational amplifier is used for amplifying signals, the comparator is used for comparing the signal intensity with the threshold value set in the DAC chip, and the MCU module is connected with the DAC chip for modifying and setting the threshold value.

Preferably, the model of the operational amplifier is INA826, the model of the comparator is ADCMP600, and the model of the DAC chip is AD 5667.

Preferably, the MCU module comprises a microprocessor of type STM32F 050.

Drawings

FIG. 1 is a system block diagram of the detection system;

FIG. 2 is a schematic circuit diagram of the amplification comparison module;

FIG. 3 is a circuit schematic of the signal reading module;

fig. 4 is a circuit schematic of the MCU module.

Detailed Description

As shown in fig. 1 to 4, in this embodiment, the detection system includes a sensor module 1, an amplification comparison module 2, a signal reading module 3, an MCU module 4, and a communication module 5, which are electrically connected in sequence, where the sensor module 1 includes at least two reflective photosensors, the reflective photosensors are correspondingly disposed on one side of a product tank to be detected, a connector corresponding to a corresponding channel of the reflective photosensors is disposed in the product tank to be detected, the reflective photosensors are further electrically connected to an external upper computer, the amplification comparison module 2 amplifies an electrical signal output by the reflective photosensors and compares the amplified electrical signal with a preset value, so as to output a digital high level and a digital low level to control a transistor 2a in the amplification comparison module 2 to be turned on or off, and the signal reading module 3 converts a state of the transistor 2a into a high level and a low level to be input to the MCU module 4, and the MCU module 4 is communicated with an external upper computer through the communication module 5. The reflective photoelectric sensor converts an analog signal of the photosensitive resistor into an electric signal, the amplified comparison module amplifies and compares the converted electric signal, and the signal is compared with a threshold value preset in the amplified comparison module by the MCU module so as to control the conduction or the cut-off of the triode. After a product is placed, the intensity of a signal received by the reflective photoelectric sensor is greater than a preset threshold value, the comparator outputs a high level, and the triode is conducted; otherwise, when the product is not placed, the signal intensity received by the reflection type photoelectric sensor is smaller than the preset threshold value, the comparator outputs a low level, and the triode is cut off. And the signal reading module reads the state of the triode and outputs corresponding high and low levels. And the MCU module feeds back the placing state of the corresponding channel to the upper computer through the communication module after receiving the level. The communication module is a common USB data communication module. The signal reading module comprises a photoelectric coupler, and signal isolation, transmission and reading are realized through the photoelectric coupler.

In this embodiment, the amplification and comparison module 2 further includes an operational amplifier 2b, a comparator 2c and a DAC chip 2d electrically connected in sequence, and the DAC chip 2d is electrically connected to the MCU module 4.

In this embodiment, the model of the operational amplifier 2b is INA826, the model of the comparator 2c is ADCMP600, and the model of the DAC chip 2d is AD 5667.

In this embodiment, the MCU module 4 comprises a microprocessor of model STM32F 050.

The utility model discloses a work flow:

an operator scans and collects the two-dimensional code of the product to be tested through a code scanning gun, the code scanning gun feeds back the two-dimensional code information to an upper computer after collecting the two-dimensional code information, and the upper computer matches a test channel of a product groove to be tested according to a code scanning sequence to the product to be tested; the upper computer feeds back a starting signal to the MCU module 4, and the MCU module 4 controls all the reflective photoelectric sensors to be started; the reflective photoelectric sensor detects whether a corresponding product slot to be tested is placed or not, after the product to be tested is read from the matched product slot to be tested within a certain time, the two-dimensional code scanning of the next channel is started, and when the product is not read within a certain time, the upper computer prompts and repeats the code scanning of the current test channel; after a product to be tested is connected with the distributed test channels, starting code scanning of the next channel; and repeating the steps S1 to S4 until all the test channels are connected with the products to be tested, opening the test button by the upper computer, and starting the test by an operator through the upper computer to enable the test system to test all the products to be tested.

Claims

1. A detection system, characterized by: the device comprises a sensor module (1), an amplification comparison module (2), a signal reading module (3), an MCU module (4) and a communication module (5) which are electrically connected in sequence, wherein the sensor module (1) comprises at least two reflection-type photoelectric sensors which are correspondingly arranged on one side of a product groove to be detected, a connector corresponding to a channel corresponding to the corresponding reflection-type photoelectric sensor is arranged in the product groove to be detected, the reflection-type photoelectric sensors are also electrically connected with an external upper computer, the amplification comparison module (2) amplifies an electric signal output by the reflection-type photoelectric sensors and compares the amplified electric signal with a preset value so as to output digital high and low levels to control a triode (2 a) in the amplification comparison module (2) to be conducted or cut off, the signal reading module (3) converts the state of the triode (2 a) into high and low levels to be input into the MCU module (4), and the MCU module (4) is communicated with an external upper computer through the communication module (5).

2. A detection system according to claim 1, wherein: the amplification comparison module (2) further comprises an operational amplifier (2 b), a comparator (2 c) and a DAC chip (2 d) which are electrically connected in sequence, and the DAC chip (2 d) is electrically connected with the MCU module (4).

3. A detection system according to claim 2, wherein: the model of the operational amplifier (2 b) is INA826, the model of the comparator (2 c) is ADCMP600, and the model of the DAC chip (2 d) is AD 5667.

4. A detection system according to claim 1, wherein: the MCU module (4) comprises a microprocessor with the model number of STM32F 050.