Photoelectric sensing counter and manufacture method thereof
A photoelectric sensor and photoelectric sensing technology, applied in the field of electronic information, can solve problems such as high cost and increase product cost, and achieve the effects of reducing product cost, improving pass rate, and increasing threshold difference
Active Publication Date: 2011-06-15
上海复展智能科技股份有限公司
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Problems solved by technology
The threshold difference is reduced, and the consistency requirements for photoelectric sensors are increased, which will require the use of high-cost photoelectric sensors, thereby increasing product costs
Method used
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Embodiment 1
[0025] see figure 1 , the present invention discloses a counter with photoelectric sensing, the counter includes a rotating wheel, and a reflective working layer of the rotating wheel is arranged on the rotating wheel, including a reflective area 11 and a non-reflective area 12 . The surface of the non-reflective area 12 is rough, thereby reducing the light reflection of the non-reflective area 12 (dark area), and increasing the threshold difference of the light reflection sensing of the dark film (non-reflective area) and bright film (reflective area).
[0026] The distance between the reflective area 11 and the non-reflective area 12 from the center of rotation is not equal, so that the distance between the reflective area 11 and the photoelectric sensor 20 is the optimal light emitting distance, and the distance between the non-reflective area 12 and the photoelectric sensor 20 is not at the optimum distance. Best reflective distance. Thus, the light reflection of the non-...
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The invention discloses a photoelectric sensing counter and a manufacture method thereof. The counter comprises a turning wheel, wherein the turning wheel is provided with a reflective working layer of the turning wheel and comprises a reflective zone and a non-reflective zone with rough surface; distance between the reflective zone and a rotation center is different from the distance between the non-reflective zone and the rotation center, so that distance between the reflective zone and a photoelectric sensor is the optimal lighting distance, and the distance between the non-reflective zone and a photoelectric sensor is not within the optimal reflective distance. The photoelectric sensing counter and the manufacture method thereof are characterized in that the reflective possibility of a dark film is lowered, and the threshold difference of the reflective sensing of the dark film and a light film is increased. The threshold difference is increased, the consistency requirement on the photoelectric sensor is lowered, the photoelectric sensor with low cost can be used, and thus product cost is lowered. In the invention, product percent of pass is simultaneously improved and production loss is lowered.
Description
technical field [0001] The invention belongs to the technical field of electronic information, and relates to a counter, in particular to a photoelectric sensing counter; meanwhile, the invention also relates to a manufacturing method of the above-mentioned counter. Background technique [0002] At present, counters composed of character wheels are widely used in various fields, such as in the field of gas meter reading. With the development of technology, it is inconvenient to directly enter the user's home or business place; in solving the remote reading of the gas meter, there are many solutions, there is a scheme that directly uses the rotation of the character wheel to generate an electric pulse signal, and there is also a scheme A structure that uses photoelectric sensing devices to test and convert the rotation of the character wheel. [0003] Among them, the existing test operations realized by photoelectric sensing devices are all read with digital signals. The ru...
Claims
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IPC IPC(8): G06M1/10
Inventor 宋奕应建俊林锋刘荣鑫
Owner 上海复展智能科技股份有限公司