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ICT and FCT test controller

A test controller and test control technology, which is applied in the direction of program control, computer control, general control system, etc., can solve the problems of low measurement accuracy, large size, and inability to measure AC signals, etc., and achieve high measurement accuracy and small size. Effect

Pending Publication Date: 2021-11-02
深圳市微特精密科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. Most of the equipment that integrates ICT testing and FCT testing is too large to be carried around, and the measurement accuracy is not high
[0007] 2. Can not measure AC signal, only low voltage can be measured

Method used

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  • ICT and FCT test controller
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  • ICT and FCT test controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] According to a specific embodiment of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

[0088] The invention provides an ICT and FCT test controller, comprising:

[0089] ICT and FCT test control board and shell; with over-current protection function;

[0090] ICT and FCT test control board includes microcontroller circuit, power supply circuit, constant voltage and constant current source circuit, ADC sampling circuit, DAC output circuit, capacitance and inductance sampling circuit, ELOAD load circuit, IO expansion circuit, interface circuit, storage circuit and calibration circuit;

[0091] The power supply circuit is connected with the microcontroller circuit, the DAC output circuit and the constant voltage and constant current source circuit;

[0092] The constant voltage and constant current source circuit is connected with the ELOAD load circuit, the capacitance inductance sampling circuit and ...

Embodiment 2

[0100] According to a specific embodiment of the present invention, the present invention will be described in detail with reference to the accompanying drawings.

[0101] The invention provides an ICT and FCT test controller, comprising:

[0102] ICT and FCT test control board and shell; with over-current protection function;

[0103] ICT and FCT test control board includes microcontroller circuit, power supply circuit, constant voltage and constant current source circuit, ADC sampling circuit, DAC output circuit, capacitance and inductance sampling circuit, ELOAD load circuit, IO expansion circuit, interface circuit, storage circuit and calibration circuit;

[0104] The power supply circuit is connected with the microcontroller circuit, the DAC output circuit and the constant voltage and constant current source circuit;

[0105] The constant voltage and constant current source circuit is connected with the ELOAD load circuit, the capacitance inductance sampling circuit and ...

Embodiment 3

[0124] According to a specific embodiment of the present invention, the working principle of the present invention will be described in detail below.

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PUM

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Abstract

The invention provides an ICT and FCT test controller, and belongs to the technical field of electronic design. The controller comprises an ICT and FCT test control board and a shell. The ICT and FCT test control board comprises a single-chip microcomputer circuit, a power supply circuit, a constant-voltage and constant-current source circuit, an ADC sampling circuit, a DAC output circuit, a capacitance and inductance sampling circuit, an ELOAD load circuit, an IO expansion circuit, an interface circuit, a storage circuit and a calibration circuit. The ICT and FCT test controller is small in size, high in measurement precision and capable of achieving random adjustment of line charging, is provided with the calibration circuit, and calibrates the ICT and FCT test controller through the external calibration board connected with the calibration circuit every preset time period.

Description

technical field [0001] The invention relates to the technical field of electronic design, in particular to an ICT and FCT test controller. Background technique [0002] At present, in order to meet the PCBA test, many devices will conduct relevant tests on the electronic components on the PCBA. Test 1 generally includes ICT testing and FCT testing. ICT (InCircuitTest) testing is also called online testing. It can test soldered resistors, Capacitors, inductors, diodes, transistors, operational amplifiers and digital devices. FCT (Functional Circuit Test) test, also known as functional test, refers to a test method that provides a simulated operating environment for the test target board PCBA to make it work in various design states, thereby obtaining parameters of each state to verify the function of the PCBA. . That is to load a suitable excitation signal to the PCBA, and measure whether the output response meets the requirements, so as to detect whether the PCBA productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 程炜韩雪涛谭道
Owner 深圳市微特精密科技股份有限公司
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