High-speed data acquisition card implemented on basis of hardware
A technology of high-speed data acquisition and hardware implementation, which is applied in the field of data acquisition cards, can solve problems such as poor positioning accuracy, lack of real-time processing, and unsuitability for real-time detection, and achieve strong anti-interference ability, high acquisition accuracy, and good application value and market value effects
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[0016] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0017] Such as figure 1 , figure 2 As shown, the present invention includes a signal conditioning circuit 1 , an ADC conversion circuit (analog-to-digital conversion circuit) 2 , an FPGA (programmable gate array) data processor 3 , an ARM control module 4 and a power supply 5 .
[0018] The signal conditioning circuit 1 is composed of a digital gain amplifier 6 and a single-ended to differential converter 7. After the signal conditioning circuit 1 receives the test start signal TRIG, the input signal is sequentially converted into The differential signal is then input into the ADC conversion circuit 2 . Wherein, the operation of the digital gain amplifier 6 is controlled by the ADC conversion circuit 2 .
[0019] The ADC conversion circuit 2 collects the input signal under the control of the external clock signal and the sampling clock input signa...
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