Device and method for detecting M-Bus signal instrument under intentional radiation interference
A technology of radiation interference and detection device, applied in the direction of measuring device, shielding device, instrument, etc., can solve the problem that the test conditions cannot be well met, and the staff generates radiation, etc., to achieve automatic detection and judgment, and ensure reliability. and accuracy, the effect of ensuring accuracy
Pending Publication Date: 2019-07-09
山西省计量科学研究院
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[0004] At present, for the equipment under test with M-Bus communication line, the coupling path of intentional interference is usually added, and the lead wire of the M-Bus signal instrument is led to the anechoic chamber. However, adding the lead wire may lead part of the high-frequency radiation to the anechoic room In addition, it will cause radiation to the staff. At the same time, due to the increase in the length of the lead wire, strictly speaking, the physical structure of the equipment has been changed, which cannot well meet the test conditions.
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[0031] The device of the present invention is mainly divided into four modules: a video acquisition control module, a signal monitoring module, a radiation interference module and a control module. The control module is a PC-based control unit, and the actual use is an industrial computer, which is mainly used for software control and information interaction; the radiation interference module consists of a signal source, a field strength probe, a radio frequency switch, an antenna group, a power amplifier group and a directional coupler, etc. The equipment is cascaded; the video acquisition control module is divided into two shielded cameras and a remote controller, which is mainly responsible for camera video signal acquisition. The video signal is displayed in the software after acquisition, and the video is stored in the computer hard disk. In addition, this module Angle control and focus adjustment can also be performed; the signal monitoring module includes a signal conver...
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The invention relates to the field of signal instrument quality detection, in particular to a device and a method for detecting an M-Bus signal instrument under intentional radiation interference, andsolves the technical problem of how to accurately detect the M-Bus instrument when the intentional interference is applied. The device comprises a signal monitoring module, a radiation interference module and a control module; the radiation interference module is controlled by the control module and is used for sending interference electromagnetic waves to the to-be-detected M-Bus signal instrument; and the signal detection module is used for realizing conversion between an RS-232 / 485 signal and an M-Bus signal, and comprises a signal converter connected with the to-be-detected M-Bus signal instrument and the control module, and a shielding box used for shielding the interference of the electromagnetic waves to the signal converter. The invention provides a technology in which the M-Bus signal can guarantee the reliability and accuracy of a test environment under the intentional interference. By means of an electromagnetic shielding technology, the problem of interference on a communication line of the detected instrument is solved to a great extent, and the fault diagnosis of the M-Bus signal instrument can be accurately carried out according to a test intention.
Description
technical field [0001] The invention relates to the field of instrumentation quality detection, in particular to a detection device and method for an M-Bus signal instrument under intentional radiation interference. Background technique [0002] In daily life, the disadvantages of manual meter reading, a seemingly economical data collection method, are increasingly exposed. The workload of meter reading is heavy, and unavoidable misreading occurs from time to time, which will undoubtedly bring unnecessary troubles to users. Using modern communication methods for centralized meter reading, you can get timely and accurate metering data without leaving your home. M-Bus is a field bus developed to meet the needs of various measuring instruments for networking and remote meter reading. It can be used for automatic meter reading of water meters, electricity meters, gas meters, heat meters, etc., and has been used in the field of smart meters. It has been widely used and has becom...
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Login to View More IPC IPC(8): G01R29/08G01R1/18G01D18/00
CPCG01R29/0814G01R29/0871G01R1/18G01D18/00
Inventor 薛鹏飞裴海琴王典泽刘玉龙李艳强王经宋福胜王艺蓉李朝锦巩晶晶杨铖斌
Owner 山西省计量科学研究院