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Sensor device capable of changing sampling frequency and control method thereof

A technology of sensor equipment and sampling frequency, applied in the field of intelligent sensing, can solve problems such as inflexibility, reduce costs, improve response mechanism, and reduce data collection

Inactive Publication Date: 2011-09-07
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The acquisition frequency of the sensor in the prior art is fixed. Once a problem occurs, it can only be processed in a fixed mode, which is not flexible enough

Method used

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  • Sensor device capable of changing sampling frequency and control method thereof
  • Sensor device capable of changing sampling frequency and control method thereof
  • Sensor device capable of changing sampling frequency and control method thereof

Examples

Experimental program
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Embodiment 1

[0018] figure 1 It is a structural diagram of the sensor device of the present invention, such as figure 1 As shown, it includes a sensing device, a signal acquisition device, a processing device, a control device and a drive execution device.

[0019] Among them, the sensing device receives external data at a fixed frequency; the signal acquisition device collects the data received by the sensing device at a certain frequency; the processing device receives the data sent by the signal acquisition device, and amplifies, filters, and A / D the data After conversion, it is sent to the control device; the control device receives the data sent by the processing device, compares the data with the preset data, adjusts the sampling frequency of the signal acquisition device, calls the corresponding control algorithm and outputs processing suggestions; drives the execution device , which feeds back the sampling frequency adjusted by the control device to the signal acquisition device. ...

Embodiment 2

[0034] In this embodiment, the present invention is applied to detect the amount of sand in the fracturing sand mixing vehicle system. The sensor in this embodiment that can change the sampling frequency has the same structure as that in Embodiment 1, and will not be repeated here.

[0035] The specific process of the control method of the sensor that can change the sampling frequency in this embodiment is as follows: the time parameter is set to 1s, and the preset data is that the sand flow rate is set to 20 cubic meters per minute. Start to receive data, the received data is 20.2 cubic meters per minute, the error between the two is 1% after the comparison of the processing device, the PID control algorithm in the control module is called, and the abnormal situation is displayed, and the sampling frequency of the signal acquisition device is adjusted to 0.33s, continue to receive data; the received data is 20.05 cubic meters per minute, and the error between the two is 0.25% ...

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Abstract

The invention discloses a sensor device capable of changing sampling frequency, which is characterized by comprising a sensing device, a signal acquisition device, a processing device, a multi-version control device and a driving executive device. The invention also discloses a control method of the sensor device capable of changing sampling frequency, which is characterized by comprising the following steps of: setting a time parameter and preset data; obtaining information state after receiving outside data by the sensing device, changing the sampling frequency of the signal acquisition device according to the information state, and processing information. The sensor device and the control method thereof provided by the invention can use different frequencies and processing modes so as to rationally deal with abnormal conditions.

Description

technical field [0001] The invention relates to the technical field of intelligent sensing, in particular to an intelligent sensor device capable of changing sampling frequency and a control method thereof. Background technique [0002] The sampling frequency of sensor data acquisition must first consider the maximum frequency supported by the acquisition card. However, using a high sampling rate for a long time may result in insufficient memory or hard disk to store data, resulting in waste and information explosion. However, if the collection frequency is too low, the amount of information will be inaccurate, making it difficult to make appropriate judgments and processing. Theoretically, it is enough to set the sampling frequency to 2 times the highest frequency component of the collected signal. In practice, 5 to 10 times is used in engineering, and sometimes it is even higher in order to better restore the waveform. [0003] In practical applications, in order to make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D3/036
Inventor 陈仪香王娜
Owner EAST CHINA NORMAL UNIV
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