Voltage type sensor access fault detection method, system and device and computer readable medium
A voltage-type sensor and fault detection technology, which is applied in the field of equipment and computer-readable media, systems, and voltage-type sensor path fault detection methods, can solve the problems of detection circuits affecting voltage collection, high cost of detection circuits, and low cost performance, and achieve Improve the overall usability, simple hardware circuit, cost-effective effect
Pending Publication Date: 2022-02-15
湖南皓天信息科技有限公司
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Problems solved by technology
[0008] The cost of various special detection circuits is high, and when the detection circuit itself fails, it will often affect the normal voltage acquisition, which will bring quality problems and make troubleshooting and positioning difficult, and the overall cost performance is low
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Embodiment
[0058] In the first aspect, the embodiment of the present invention discloses a method for detecting a fault in a voltage-type sensor path, and the method includes the following steps:
[0059] According to the output range and cable characteristics of the voltage sensor, select and determine the power supply level of the operational amplifier in the detection circuit to determine the maximum amplitude of the pulse signal output;
[0060] According to the default setting, the output pulse signal is used for channel attenuation evaluation, and the effective matching between the superimposed signal and the equivalent circuit of the sensor is ensured by adjusting the pulse width and pulse amplitude;
[0061] Evaluate the background noise energy in the path, when the voltage sensor is an effective output, complete the energy evaluation of the effective signal, and subtract the energy of the background noise energy signal;
[0062] After the A / D is used to subtract the energy of th...
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The invention relates to a voltage-type sensor access fault detection method, which comprises the following steps of: a power supply level of an operational amplifier in a detection circuit is selected and determined according to an output range and cable characteristics of a voltage-type sensor so as to determine a maximum amplitude possibly output by a pulse signal; a pulse signal is output according to default setting, path attenuation evaluation is carried out, and effective matching of a superposed signal and a sensor equivalent circuit is ensured by adjusting the pulse width and the pulse amplitude; the background noise energy in the path is evaluated, when the voltage type sensor outputs effectively, energy evaluation of effective signals is completed, and energy of background noise energy signals is subtracted; and after A / D sampling and background noise energy signal energy subtraction, preliminary path energy judgment is carried out. According to the invention, the access state detection of various voltage type sensors can be realized, the universal application value is realized, and the repeated development is reduced.
Description
technical field [0001] The present invention relates to the technical field of voltage-type sensor path fault detection, in particular to a voltage-type sensor path fault detection method, system, equipment and computer-readable medium. Background technique [0002] Sensors are the input sources of various control systems, and various sensors, especially those with voltage output, have been widely used in various industries. The detection of temperature, humidity, pressure, speed, acceleration, gas concentration, element content and other elements are all converted into voltage signals by special principles of electricity, mechanics, physics and chemistry. Therefore, the detection of the voltage sensor can be judged by analyzing the characteristics of its output voltage. [0003] Different types of voltage sensors have a large range of output voltage and load capacity. The general method of detection for this type of sensor requires adaptive parameter adjustment capabilitie...
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IPC IPC(8): G01R31/54G01D18/00
CPCG01R31/54G01D18/00
Inventor 彭毅
Owner 湖南皓天信息科技有限公司