Automated Testing System for Circuit Boards
This system is used to test functional circuit boards developed by a research institute. Based on the specific testing needs of users and years of experience in the testing industry, Hengtai Measurement and Control has customized and developed a comprehensive automated testing device. The device supports automatic loading and unloading of the tested items, automatic sequential testing, step-by-step debugging of testing resources, and supports subsequent testing functions and resource expansion. The device integrates a stable and reliable software and hardware platform. It has good stability, high maturity, and is convenient for future expansion and maintenance.
Equipment Design Objectives
Equipment Design Objectives
Equipment Function Description
The equipment can perform automated functional testing on the specified UUT. The main functions and features of the testing device include:
- The system can achieve functional testing and data recording of the UUT;
- It can achieve automated loading and unloading and automated testing, generating test reports with strong repeatability;
- The system collects and outputs various electrical signals required by the UUT, including switch signals, analog signals, bus signals, power signals, frequency signals, etc.;
- The testing device should not affect the functional characteristics of the tested item itself;
- Reduce testing time and accelerate testing pace;
- Minimize manual intervention to reduce labor costs, time costs, and testing errors;
- The human-machine interface is convenient and easy to operate;
- Rich testing functions;
- The entire device is built in a modular way, making testing functions easy to expand and maintain;
- The system software development platform is easy to learn.
System Resource Table
The system provides the following resources:
|
Resource Item |
Parameter |
|
|
Analog Input |
Number of Channels |
4 |
|
Input Voltage Range |
0~500V |
|
|
Input Accuracy |
Less than 5mV |
|
|
Analog Output |
Number of Channels |
4 |
|
Output Voltage Range |
±5V |
|
|
Accuracy |
Less than 5mV |
|
|
Level Range |
3.3V, 5V, 24V adjustable |
|
|
PWM Output |
Number of Channels |
2 |
|
Level Range |
5V adjustable |
|
|
Driving Current |
20mA |
|
|
Duty Cycle |
0.1~99.9 adjustable |
|
|
Frequency |
1~65KHz adjustable |
|
|
Switch Signal Input |
Number of Channels |
24 |
|
Withstand Voltage |
250V |
|
|
Current Capacity |
10A |
|
|
Passive Contact Input |
Number of Channels |
8 |
|
Withstand Voltage |
250V |
|
|
Current Capacity |
10A |
|
|
Single-phase Isolated Regulated Power Supply |
Number of Channels |
1 |
|
Current Value |
1.5A |
|
|
Voltage Value |
220V |
|
|
9V AC Regulated Power Supply |
Number of Channels |
1 |
|
Current Value |
7A |
|
|
Voltage Value |
9V |
|
|
30V AC Regulated Power Supply |
Number of Channels |
1 |
|
Current Value |
7A |
|
|
Voltage Value |
9V |
|
|
RS485 Communication |
Number of Channels |
1 |
|
Rate |
1~115200 configurable |
Product Design Solutions
Product Design Solutions
The testing personnel only need to click the start button. The entire testing process is fully automated, requiring no additional participation from the operators.
The system uses a modular design, where each fixture can load a tested item and is connected to the test cabinet via a testing cable. One fixture and one testing cable constitute a testing module unit, creating a testing environment for one tested item. If more parallel testing units are needed, additional testing module units can be added.
Custom Fixtures
Pneumatic automatic control fixtures directly contact multiple directional connectors on the test item, ensuring continuity of the test signals between the tested item and the testing system. Control is achieved through software, with pneumatic control pins pressing the tested item together.The back of the fixture is designed with standard aviation plug interfaces.