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Multichannel data acquisition circuit

A data acquisition circuit and multi-channel technology, applied in electrical components, analog-to-digital converters, analog-to-digital conversion, etc., can solve problems such as high price, mismatched detection requirements, and inconvenient use

Pending Publication Date: 2020-07-28
ZHEJIANG WEIXING INTELLIGENT METER STOCK
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Professional testing equipment is expensive, inconvenient to use, and does not match the testing needs of the actual production line, etc.

Method used

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Embodiment Construction

[0026] In order to describe the technical content, structural features, and achieved effects of the present invention in detail, the following describes in detail in conjunction with the embodiments and accompanying drawings.

[0027] The invention includes a multi-channel switching circuit, a voltage detection circuit and a power supply circuit.

[0028] Such as figure 1 As shown, the multi-channel switching circuit includes a first plug-in P1 (DB62), a first analog switch U1 (MUX508), a second analog switch U2, a third analog switch U3, a fourth analog switch U4, and a fifth analog switch. Switch U5, sixth analog switch U6, seventh analog switch U7, eighth analog switch U8, first filter capacitor C1, second filter capacitor C2, third filter capacitor C3, fourth filter capacitor C4, fifth filter capacitor C5 , the sixth filter capacitor C6, the seventh filter capacitor C7, and the eighth filter capacitor C8.

[0029]The first pin of the first plug-in P1 is connected to the ...

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Abstract

The invention provides a multichannel data acquisition circuit. The circuit comprises a multi-channel switching circuit, a voltage detection circuit, a power supply circuit and an external 12V switching power supply, 5V and 3.3V are provided by an arduino development board, and -12V is provided by the power supply circuit. The detection circuits of which VSS is connected with-12V and VDD is connected with +12V and 56 channels of the analog switch are divided into eight groups, and each group comprises seven test points which correspond to eight tested mainboards and seven test points of the tested mainboards. The eight mainboards are synchronously tested, one of the seven channels of the eight analog switches is controlled to be conducted by arduino, logic is controlled to be opened for one of the seven channels at the same time, and switching is performed to the next test point at the same time after the test of the corresponding test point is completed. The circuit provided by the invention meets the testability requirement on an actual production line, is simple, has many test points, can test eight mainboards at the same time, is mature and reliable in arduino development board, can be quickly developed and deployed, and saves a lot of manpower and material resources.

Description

technical field [0001] The invention belongs to the field of instrument detection and relates to a multi-channel data acquisition circuit. Specifically, it is a 56-channel analog-to-digital conversion circuit. The detection range is from negative 10V to positive 10V. The 56 channels are divided into 8 groups, and each group has 7 channels. Through the analog switch, it is connected to the analog-to-digital conversion chip AD7606, which is read by the arduino development board. A circuit that takes the sampled voltage value. Background technique [0002] In recent years, with the development of semiconductor technology and the popularization of digital control, the rapid development of instrumentation industry has been promoted. The demand for intelligent manufacturing on the production line is getting stronger and stronger. Quick and efficient testing of whether the produced motherboard is qualified can greatly shorten the process and save time. In the industry, the genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/12
CPCH03M1/124
Inventor 余金存
Owner ZHEJIANG WEIXING INTELLIGENT METER STOCK
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