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

Active Publication Date: 2020-03-13
HANGZHOU SHANKE INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies such as complicated operation and low efficiency in the existing ultrasonic water meter circuit board detection technology, the present invention provides a fast, simple, efficient and stable ultrasonic water meter PCB circuit online detection method and device

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  • On-line detection method and device for ultrasonic water meter pcb circuit
  • On-line detection method and device for ultrasonic water meter pcb circuit
  • On-line detection method and device for ultrasonic water meter pcb circuit

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Embodiment Construction

[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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Abstract

The invention discloses an ultrasonic water meter PCB circuit online detection method and apparatus. The apparatus mainly comprises a mechanical structure device and a test system circuit, the test system circuit mainly measures the work voltage and current of a key circuit of a to-be-detected ultrasonic water meter PCB mainboard and the work current of a to-be-detected M-BUS circuit PCB, a test system sends obtained data to a host computer through a 485-USB serial port, and time difference data of a flow measurement module, information of a temperature measurement module, and information of a storage chip of an ultrasonic water meter PCB are acquired by employing a M-BUS host and a module circuit by the host computer and compared with related data of normal operation of the ultrasonic water meter PCB circuit preset in the host computer. According to the method and apparatus, whether a to-be-detected board is qualified can be rapidly and stably detected as long as the to-be-detected PCB is replaced during usage, the test process is simplified, the test efficiency is improved, and the requirement of mass production of factories is satisfied.

Description

technical field [0001] The invention belongs to the technical field of automatic flow detection, and relates to an online detection method and device for an ultrasonic water meter PCB circuit. Background technique [0002] With the further improvement of smart city construction, smart water has become a development trend in the field of water flow measurement. At present, in the water flow metering industry, the water metering instruments used in smart water affairs are mainly mechanical water meters. Most manufacturers install electronic collection devices on mechanical water meters to realize functions such as remote automatic meter reading and online monitoring of user water consumption. During the use of mechanical water meters, the mechanical metering elements wear a lot, and the long-term use of the water meter will reduce the measurement accuracy of the water meter and cannot measure small flows. [0003] As a new type of intelligent instrument, ultrasonic water mete...

Claims

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Application Information

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IPC IPC(8): G01R31/28
CPCG01R31/2806
Inventor 赵伟国蒋延付王成李韩亘
Owner HANGZHOU SHANKE INTELLIGENT TECH CO LTD
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