Dynamic threshold detection circuit and method as well as concentrator
A dynamic threshold and detection circuit technology, applied in the field of concentrators, can solve the problems of jumping emission voltage, large variation of load current, fluctuation of load current, etc.
Pending Publication Date: 2019-04-23
武汉易维科技股份有限公司
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Problems solved by technology
[0002] The smart meter reading concentrator is an important component of the remote meter reading control system. When it is running at full load, the internal consumption of the concentrator will increase, resulting in low input voltage to the load. If it is too low, the load will not work normally and cause Meter reading failure; in theory, the load has a constant current characteristic, but in practical applications, the load often deviates from the constant current characteristic, which causes the jump of the emission voltage of the MBUS (Symphonic mbus, remote meter reading system), which will cause the current of the load to Fluctuation, which affects the return data received by the concentrator
[0003] Because in the prior art, a fixed threshold is generally used to detect the load current, when the MBUS bus is overloaded, the jump of the MBUS transmission voltage will cause a large change in the load current, and the data within the load current recovery time will be lost, and even cause The load is not working properly
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[0042] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0043] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relationship between various components under a certain posture (as shown in the accompanying drawings). The relative positional relationship, the movement situation, etc., if the specific posture changes, the directional indication also changes accordingly. ...
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The invention discloses a dynamic threshold detection circuit and method as well as a concentrator. The dynamic threshold detection circuit comprises a power supply circuit, a controller, a dynamic control circuit, a current signal conversion circuit, a threshold identification current circuit and a comparison circuit, wherein the power supply circuit is connected with the controller; the controller is also separately connected with the dynamic control circuit, the current signal conversion circuit, the threshold identification current circuit and the comparison circuit; the dynamic control circuit is also connected with the input end of a driving circuit; the output end of the driving circuit is connected with a communication voltage generation circuit; and the communication voltage generation circuit is also separately connected with a communication output interface circuit and the current signal conversion circuit. The technical scheme of the invention aims to detect load returningdata through the arrangement of the dynamic threshold detection circuit and feed back to the controller when a load current fluctuates so as to regulate voltage input to a load, thus making the load normally work.
Description
technical field [0001] The invention relates to the technical field of concentrators, in particular to a dynamic threshold detection circuit, method and concentrator. Background technique [0002] The smart meter reading concentrator is an important component of the remote meter reading control system. When it is running at full load, the internal consumption of the concentrator will increase, resulting in low input voltage to the load. If it is too low, the load will not work normally and cause Meter reading failure; in theory, the load has a constant current characteristic, but in practical applications, the load often deviates from the constant current characteristic, which causes the jump of the emission voltage of the MBUS (Symphonic mbus, remote meter reading system), which will cause the current of the load to Fluctuations, such fluctuations affect the return data received by the concentrator from the load. [0003] Because in the prior art, a fixed threshold is gene...
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Login to View More IPC IPC(8): G05B19/042G01R19/165G01R22/06G08C19/00
CPCG05B19/0423G08C19/00G01R19/165G01R22/06G05B2219/25257
Inventor 张涛周付山郑仕华
Owner 武汉易维科技股份有限公司