A Gray Code Uniformity Detection Method for Photoelectric Sensors
A detection method and sensor technology, which is applied in the direction of converting sensor output, instruments, measuring devices, etc., can solve the problems of inaccurate judgment of sensor failure, poor precision of the character wheel wheel, assembly position deviation, etc., to avoid electronic readings and mechanical characters. Inconsistent wheel readings, guaranteed pass rate, and easy operation
Active Publication Date: 2020-10-02
CHONGQING SMART METER GRP CO LTD
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Problems solved by technology
However, there are often individual quality problems in production, and once a certain infrared photoelectric tube in the sensor is open or the position is shifted during welding, or the precision of the character wheel is too poor or the assembly position is too large, it will cause the copied electronic readings Inconsistent with the reading of the mechanical character wheel on the watch seen by the user, causing measurement disputes
In the production process, it is often impossible to accurately determine which sensors are faulty.
Method used
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[0019] For implementing the inventive method, design a kind of detection device, as figure 1 , The detection device includes a character wheel wheel 2, a rotating shaft 4, a photoelectric direct reading meter circuit board fixing fixture 5, a rotating shaft controller and a sensor detection controller.
[0020] Fix the photoelectric direct-reading meter head to be detected on the detection device with a fixture 5. The bottom of the fixture 5 is closely connected with the connection point of the photoelectric direct-reading meter circuit board 6 with a telescopic thimble 7, and the sensor detection controller is connected with the bottom of the thimble 7 with a wire. The data collected by the sensor is processed by the method of the present invention. The character wheel roulette 2 is in close contact with the rubber ring 3 of the rotating shaft. The 2 cylinders of the character wheel roulette are evenly divided into 10 equal parts, which are represented by the sequence of cha...
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The invention discloses a method for detecting the uniformity of the Gray code of a photoelectric direct reading meter sensor. The number of occurrences of each group of Gray codes; finally, the actual angle corresponding to each group of codes can be calculated by dividing the number of occurrences of each group of codes by the sum of the number of occurrences of all codes; this method can accurately and efficiently detect the uniformity of Gray codes Degree, so as to avoid the inconsistency of mechanical and electrical readings caused by sensor failure or error, and eliminate user measurement disputes.
Description
technical field [0001] The invention belongs to the field of information processing in the metrology industry, and in particular relates to a gray code uniformity detection method of a photoelectric sensor. Background technique [0002] In the remote meter reading method of smart water meters and smart gas meters, photoelectric direct reading sensors are widely used. When copying electronic readings, the mechanical character wheel readings are converted into electronic readings. In the conversion process of mechanical and electrical readings, the photoelectric direct reading sensor is required to work normally. [0003] The direct-reading meter includes a photoelectric sensor board, a character wheel roulette and a photoelectric direct-reading circuit board. The infrared emitting or receiving tubes are evenly distributed on both sides of the photoelectric sensor board at 72 degrees. There are 3 adjacent fan holes on the character wheel, so that the character wheel is divid...
Claims
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IPC IPC(8): G01D5/347G01F25/00
CPCG01D5/34776G01F25/10
Inventor 吴天劲谢兵陈计信
Owner CHONGQING SMART METER GRP CO LTD