Dynamic parameter measuring device
A technology of dynamic parameters and measuring devices, which is applied in the field of memory, can solve problems such as the inability to meet the requirements of large-capacity and fast-changing signal transmission, and achieve the effects of high reliability, good real-time performance, and high acquisition speed
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[0022] The present invention will be further described below in conjunction with drawings and embodiments.
[0023] Such as figure 1 , In the interface isolation circuit, resistors R1 and R2 are current-limiting resistors, R3 and R4 are output pull-up resistors, capacitors C1 and C2 respectively form low-pass filters with R1 and R2 to filter out high-frequency noise, and diodes D1 and D2 prevent flooding current input. The conduction current of the optocoupler LED is IF, the conduction voltage drop is VF, the collector conduction current of the phototransistor is IC, and the conduction voltage is VCE. The interface circuit uses optocoupler HCPL-0631 for electromagnetic isolation.
[0024] Such as figure 2 , In the acquisition control card start acquisition command interface circuit, the start acquisition command pstart of the ground detection platform is connected to the K1-2 signal terminal of the long-line communication interface of the data recorder through the long-lin...
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