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Sensor output filtering device

An output filtering and sensor technology, applied in the field of sensor detection, can solve the problems of easy temperature drift and affecting the accuracy of speed detection.

Inactive Publication Date: 2021-09-14
沧州市科技创业中心
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Interferenced by external environmental factors, the detection signal of the photoelectric speed sensor is likely to be mixed with a large amount of clutter during transmission, and the signal is prone to temperature drift during amplification processing, which greatly affects the accuracy of speed detection

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Embodiment Construction

[0016] Regarding the aforementioned and other technical contents, features and effects of the present invention, refer to the appended figure 1 to attach figure 2 It will be apparent from the detailed description of the embodiments. The structural contents mentioned in the following embodiments are all based on the accompanying drawings of the description.

[0017] Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0018] A sensor output filtering device, including a signal amplification and adjustment circuit and a filter stabilization adjustment circuit, the signal amplification adjustment circuit is used to enhance the output signal of the photoelectric speed sensor, and send the processed signal to the filter stabilization adjustment circuit, filter The stabilization and adjustment circuit includes an LC filter and a feedback amplitude stabilization component. The input end of the LC filter is connected ...

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Abstract

The invention discloses a sensor output filtering device, which comprises a signal amplification adjusting circuit and a filtering stability adjusting circuit. The signal amplification adjusting circuit is used for carrying out enhancement processing on an output signal of a photoelectric rotating speed sensor and sending the processed signal into the filtering stability adjusting circuit. By designing an RC filter and an LC filter, noise reduction can be well carried out on output signals of the photoelectric rotating speed sensor, interference of external environmental factors on detection signal precision is effectively avoided, and the zero-drift inverting amplifier is adopted to well eliminate temperature drift influence, so that the sensor is wider in application environment and higher in reliability. Finally, stable output of a detection signal is ensured by utilizing a feedback amplitude-stabilizing assembly, so that the data processing of the microprocessor is more stable and reliable, and the rotating speed detection precision is greatly improved.

Description

technical field [0001] The invention relates to the technical field of sensor detection, in particular to a sensor output filter device. Background technique [0002] Speed ​​is an important characteristic parameter in motor performance testing. Many characteristic parameters of power machinery are inseparable from the function relationship related to speed. Therefore, speed measurement is a key point in various fields of industrial production. As an important component of speed detection, the photoelectric speed sensor is an electronic device that senses changes in the received light intensity based on the working principle of the photodiode. When the light emitted by it is reflected or blocked by the target, the receiver will sense the corresponding electric Signal. It includes a modulated light source, an optical system composed of photosensitive elements, amplifiers, switches or analog output devices. Interferenced by external environmental factors, the detection signa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P3/36G01P3/44H03H7/01
CPCG01P3/36G01P3/44H03H7/01
Inventor 郭培志刘显武
Owner 沧州市科技创业中心