On-line detection method and device for ultrasonic water meter pcb circuit
A detection device, PCB motherboard technology, applied in the direction of measurement device, electronic circuit test, measurement of electricity, etc., can solve problems such as low efficiency and complicated operation, and achieve the effect of reducing production cost, simplifying detection process, and improving detection efficiency
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[0015] In order to express the present invention more clearly, further description will be given below in conjunction with the accompanying drawings.
[0016] figure 1 It is the overall block diagram of the ultrasonic water meter PCB circuit online detection device circuit. combine figure 1 Briefly describe the online detection method of the ultrasonic water meter PCB circuit and the circuit design principle of the device: the detection circuit of the device is powered by a 220V AC power supply, and the power supply is converted into a 5V DC voltage by a switching power supply module (12), and then converted into a 3.3V by a voltage stabilizing circuit. The DC voltage of the ultrasonic water meter to be tested supplies power to the main board (15) of the ultrasonic water meter to be tested and the circuit module (13) of the test system, and the M-BUS module (14) is powered by the M-BUS host. The core control chip of the test system circuit module (13) selects the single-chip...
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