Transparent window with photoelectric sampling device and processing method and special instrument thereof

Abstract

The invention discloses a transparent window with a photoelectric sampling device, a processing method and a special instrument thereof, and belongs to the field of photoelectric sampling instruments. The transparent window mainly comprises a window body, the window body is made of transparent plastic, a photoelectric sampling device is arranged in the window body, an insulated wire of the photoelectric sampling device extends out of the window body, and the photoelectric sampling device is matched with a photoelectric sampling pointer. The photoelectric detection device and the window made of the transparent plastic material are effectively combined and are processed into a whole through an injection molding process, waterproof and pressure-resistant treatment does not need to be performed, the failure rate is greatly reduced, meanwhile, the cost is saved, and batch production and popularization of photoelectric instruments are more convenient. The transparent window is mainly used for the photoelectric sampling instrument.

Description

technical field [0001] The invention belongs to the field of photoelectric sampling instruments, and in particular relates to a transparent window with a photoelectric sampling device, a processing method thereof and a special instrument. Background technique [0002] The photoelectric sampling instrument is mainly to add reaction areas with different reflection or transmission intensities to the light on the rotating pointer of the instrument, so as to realize the counting of the above-mentioned different reflection or transmission intensities through the photoelectric sampling device. The photoelectric sampling instrument converts the mechanical rotation of the pointer into a photoelectric pulse signal. In order to convert the mechanical detection rotation into a photoelectric pulse signal, the applicant provided a transmissive photoelectric metering water meter and its special pointer in the early stage, see CN210533465U for details. When the pointer is in use, it needs t...

AI Technical Summary

Problems solved by technology

In order to convert the mechanical detection rotation into a photoelectric pulse signal, the applicant provided a transmissive photoelectric metering water meter and its special pointer in the early stage, see CN210533465U for details. When the pointer is in use, it needs to be used in conjunction with a photoelectric detection device installed on the dial ; This method has the following defects in the actual production process: 1. The difficulty of processing is large. Since the photoelectric detection device is arranged under the instrument glass window, it is necessary to do waterproof and pressure-resistant treatment to the photoelectric detection device. The process requirements are high and the finished product fails. 2. If the reflective photoelectric sampling instrument pointer is used, see CN2014203124618 for details, and then the photoelectric sampling device is set above the instrument glass window. Many anti-cheating devices need to be added, and the experimental results are not ideal; 3. The existing instrument windows are usually glass windows, which have poor impact resistance and are prone to frost cracks in winter, and maintenance and replacement are time-consuming and laborious

Images