Integrated low-current acquisition system and method
An acquisition system and acquisition method technology, applied in the detection field, can solve the problems of repeated configuration of signal processing circuits, high overall system cost, complex device process, etc., and achieve the effects of convenient system maintenance, simplified system design, and strong anti-interference ability
Pending Publication Date: 2020-01-14
尹武生
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Problems solved by technology
The defect of the existing similar technology is that too many functions are scattered in the small current sensor, causing some signal processing circuits to be reconfigured, resulting in high power consumption and greatly increased cost, and will result in complex device technology and high overall system cost. The sensor fails and the system is difficult to repair
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[0047] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0048] The present invention provides an integrated small current acquisition system, which utilizes digital technology to centrally integrate the signals of the original DC small current sensors scattered in each branch into an intelligent sensing unit, uses digital intelligent technology, bus communication mode and uses PCB board wiring Gather the output signals of each sensor, flexibly increase or decrease each collection point with the principle of integration, simplify system design, reduce system cost, and reduce energy consumption. see Figure 1 to Figure 13 , the small current acquisition system includes an insulation detection unit 1 and several intelligent sensing units 2 respectively connected to the insulation detection unit 1, the intelligent sensing unit 2 can convert the analog signal obtained by detecting the change of the cur...
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The invention discloses an integrated low-current acquisition system and an integrated low-current acquisition method. The integrated low-current acquisition system comprises an insulation detecting unit and a plurality of intelligent sensing units connected with the insulation detecting unit, wherein each intelligent sensing unit comprises a processing unit, a communication interface connected with the processing unit, an NAND gate unit connected with the processing unit, a first current acquisition unit and a second current acquisition unit which are connected with the NAND gate unit respectively, and a plurality of passive sensors; and one end of each passive sensor is connected with the first current acquisition unit, the other end of each passive sensor is connected with the second current acquisition unit, and the first current acquisition unit and the second current acquisition unit acquire the change of a current in a cable to be detected by means of a passive sensor. The integrated low-current acquisition system and the integrated low-current acquisition method utilize the digital technology to integrate signals originally dispersed in each branch DC small-current sensor into the intelligent sensing units in a centralized manner, increase or decrease acquisition points flexibly by using an integration principle, simplify the system design, decrease the system cost, andreduce the energy consumption.
Description
technical field [0001] The invention relates to the technical field of detection, in particular to an integrated small current acquisition system and method. Background technique [0002] DC power supply (DC power) has two electrodes, positive and negative. The potential of the positive electrode is high, and the potential of the negative electrode is low. Form a current from the positive pole to the negative pole. The DC power supply system is mainly composed of battery packs, charging devices, DC feeder screens, DC power distribution cabinets, DC power monitoring devices, DC branch feeders, etc., and thus forms a huge DC power supply network that is used for relay protection devices, Circuit breaker tripping and closing, signal system, DC charger, UPS, communication and other subsystems provide safe and reliable working power. At present, the detection methods of DC current are generally divided into direct type and indirect type. The direct type is generally a method of...
Claims
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Login to View More IPC IPC(8): G01R19/00G01D21/02G08C17/02
CPCG01D21/02G01R19/0092G08C17/02
Inventor 尹武生
Owner 尹武生