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Mechanical water meter calibration method and device based on laser sensor

A laser sensor and verification device technology, applied in the field of metrology, can solve problems such as inaccurate verification, and achieve the effects of enhancing resistance to light changes, low cost, and avoiding signal loss

Pending Publication Date: 2021-01-12
GUANGZHOU INST OF ENERGY TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem of inaccurate verification faced by the traditional water meter verification method, and propose a mechanical water meter verification method and device based on a laser sensor. The laser sensor is used to record the number of rotations of the mechanical water meter end pointer. Use high-precision electronic scales or / and standard meters as the main standard to realize automatic reading and automatic verification of water meter flow, effectively reduce error rates, improve verification efficiency, liberate verification personnel, and save time and cost

Method used

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  • Mechanical water meter calibration method and device based on laser sensor
  • Mechanical water meter calibration method and device based on laser sensor
  • Mechanical water meter calibration method and device based on laser sensor

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Embodiment 1

[0053] A mechanical water meter verification method based on a laser sensor, comprising the following steps: the water meters to be verified are sequentially connected in series and placed on a detection platform through a meter clamp, and the flow collection device is adjusted so that the light sources of the main laser sensor and the auxiliary laser sensor emit to the test station. Any fixed point in the circular area swept by the last pointer of the water meter rotates a circle and remains stable;

[0054] The controller controls the water pump, the water inlet valve, the water outlet valve, and the flow monitor to work at the same time. The flow monitor detects the state of the water flow. When the water flow is stable to the verification flow point, the controller controls the main laser sensor and the auxiliary laser sensor to start working;

[0055] The final pointer of the water meter to be verified rotates. When the last pointer reaches the fixed point, the main laser ...

Embodiment 2

[0063] Such as figure 2 As shown, the structure of embodiment 2 is substantially the same as that of embodiment 1, except that the flow standard device is a standard flow meter 92, and the standard flow meter 92 is set between the water inlet valve 4 and the flow monitor 8 through the water delivery pipe.

Embodiment 3

[0065] Such as image 3 As shown, the structure of embodiment 3 is substantially the same as that of embodiment 1, the difference being that the flow standard device is a combination of an electronic capacity scale 91 and a standard flow meter 92, the electronic capacity scale 91 is matched with a reversing valve 93, and the standard flow meter 92 is set between the reversing valve 93 and the flow monitor 8 through the water delivery pipe, one water outlet of the reversing valve 93 is connected to the water inlet valve 4 through the water delivery pipe, and the other water outlet is connected to the water inlet of the electronic capacity scale 91 In one case, the set time T is used as the verification time. When the verification time reaches the set time, the verification process stops, and the average value of the unit time T water flow of the electronic capacity scale 91 and the standard flow meter 92 is taken as the unit verification. The standard value of the water flow wi...

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Abstract

The invention discloses a mechanical water meter calibration method and device based on a laser sensor. Water meters to be calibrated are sequentially connected in series and arranged on a detection table through a meter clamping device. The flow acquisition device is adjusted to enable light sources of the main laser sensor and the auxiliary laser sensor to be emitted to any fixed point of a circular area swept by rotating a last pointer of the to-be-calibrated water meter for a circle, and the fixed point is kept stable; the controller controls the water pump, the water inlet valve, the water outlet valve and the flow monitor to work simultaneously, and the flow monitor detects the water flow state; the last pointer of the to-be-calibrated water meter rotates, the main laser sensor generates a first pulse, and starting time T0 starts to be recorded; meanwhile, the flow standard device starts to record the water flow condition; and when the verification result exceeds a set thresholdvalue, the verification is finished, and an indicating value error of the to-be-verified water meter at the verification point is calculated. According to the invention, the laser sensor group is usedfor recording the rotation turns of the last pointer of the mechanical water meter, so that automatic flow reading and automatic verification of the water meter are realized, and the verification efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of metering, in particular to a method and device for calibrating a mechanical water meter based on a laser sensor. Background technique [0002] A water meter is an instrument used to continuously measure, record and display the volume of water flowing through the measuring sensor under measurement conditions. It is divided into mechanical water meters, mechanical water meters with electronic devices and electronic water meters. The civil field is dominated by mechanical water meters . The water meter of the inbound and outbound water unit is a measuring instrument for trade settlement between the two sides of the water supply, and its measurement accuracy and reliability are key indicators to measure the quality of the water meter. The verification work of the water meter is the basic means to check whether the measurement accuracy of the water meter is qualified, including 4 verification items, namely ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
CPCG01F25/10Y02A20/00
Inventor 张圆明卢其伦吴永忠樊强刘宜仔
Owner GUANGZHOU INST OF ENERGY TESTING
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