A Method of Quickly Detecting Water Meter Errors
A water meter and error technology, which is applied in the field of rapid detection of water meter errors, can solve the problems of long time consumption, large time and manpower consumption, and achieve the effects of reducing energy consumption, improving production efficiency, and increasing economic benefits
Active Publication Date: 2021-11-30
无锡水表有限责任公司
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Problems solved by technology
Such a measurement method needs to consume a lot of time and manpower to complete the detection
It takes too long to detect the error of the water meter in the small flow area
For example, it takes 19.2 minutes to detect the minimum flow Q1 of a 15mm caliber water meter with a range of 80 times the national standard by the volumetric method, and the larger the range of the water meter, the longer the time-consuming
Method used
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Embodiment Construction
[0024] Specific embodiments of the present invention will be described below.
[0025] The water meter includes a microcontroller. The water meter also includes an impeller installed in the water meter. The impeller is rotated by the impact of the water flowing through the water meter. Every time the impeller rotates once, a pulse signal is sent out, which is recorded by the single-chip microcomputer in the water meter.
[0026] The specific steps for detecting the error of the water meter include:
[0027] Step 1. Make a comparison table and store it in the storage unit of the water meter. The storage unit communicates with the single-chip microcomputer through the general signal input and output interface. The specific steps for making the comparison table are as follows:
[0028] Step 1.1. Select ten flow points within the measuring range of the water meter, and divide the flow value within the measuring range of the water meter into ten segments, which are defined as te...
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The invention relates to a method for quickly detecting the error of a water meter. A flow point to be tested is selected; the water flow reaches the flow point to be tested and flows through the water meter to drive the impeller in the water meter to rotate; when the water meter is running, collect the flow point to be tested The actual pulse signal generated when the flow point flows through the water meter records the actual pulse period generated when the flow point to be tested flows through the water meter; The flow coefficient corresponding to the number; the ratio of the corresponding flow coefficient to the actual pulse period is the actual instantaneous flow of the flow point to be tested; compare the actual instantaneous flow with the standard instantaneous flow to obtain the indication of the water meter value error. The present invention can quickly check the display value error of the water meter through the comparison table data stored in the storage unit. Compared with the traditional manual calibration scheme of the volume method, the production efficiency is greatly improved, and the energy consumption is also greatly reduced.
Description
technical field [0001] The invention relates to a water meter calibration technology, in particular to a method for rapidly detecting water meter errors. Background technique [0002] In the traditional technology, the volume method is used to detect the water meter error. The volumetric method is to install the water meter into the water pipe, open the valve of the water pipe, when the water flows through the water meter at the same time at a certain flow rate, and flows into the standard measuring cylinder, start to record the water value and measurement time, when the water flow stops flowing into the measuring cylinder, stop the water meter and Acquisition of timer signals. Measure the volume of liquid flowing into the measuring cylinder, the measurement time and the output flow value of the water meter, then the flow Q=V / T, so as to determine the measurement characteristics of the water meter. Such a measurement method needs to consume a lot of time and manpower to co...
Claims
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IPC IPC(8): G01F25/00
CPCG01F25/10
Inventor 陈国建张庆
Owner 无锡水表有限责任公司