Non-magnetic meter control circuit, non-magnetic meter circuit, chip and meter
A control circuit and digital control circuit technology, applied in circuit devices, battery circuit devices, current collectors, etc., can solve the problems of increasing design complexity, cost, and many devices, achieving low cost, high measurement accuracy, and improved measurement. The effect of accuracy
Pending Publication Date: 2022-04-12
NATIONZ TECH INC
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Problems solved by technology
[0003] The existing non-magnetic meter uses a single-chip microcomputer to control multiple external field effect transistors, transistors, capacitors and resistors to realize the charge and discharge control of the LC oscillating circuit and the statistics of the waveform, but the circuit uses many devices, which increases the complexity of the design. degree and cost
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0024] The flow charts shown in the drawings are just illustrations, and do not necessarily include all contents and operations / steps, nor must they be performed in the order described. For example, some operations / steps can be decomposed, combined or partly combined, so the actual order of execution may be changed according to the actual situation.
[0025] Some implementations of the present application will be described in detail below in conjunction with the ac...
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The invention provides a non-magnetic meter control circuit, a non-magnetic meter circuit, a chip and a meter, and the non-magnetic meter control circuit comprises a charging circuit which is connected between a first port and a digital control circuit, and an oscillation detection circuit which is connected between a second port and the digital control circuit. The second port can be grounded through the discharge control circuit, and the digital control circuit is connected with the discharge control circuit; the digital control circuit controls the charging circuit to charge the oscillating circuit and stops controlling the charging circuit to charge the oscillating circuit when the charging voltage of the oscillating circuit reaches a voltage threshold value; and the discharge control circuit is controlled to enable the second port to be grounded, so that the oscillation circuit outputs oscillation signals to the second port, and the digital control circuit counts the number of digital pulses of the oscillation signals through the oscillation detection circuit and determines the reading of the non-magnetic meter according to the number of the digital pulses. According to the non-magnetic meter control circuit, the metering accuracy is greatly improved.
Description
technical field [0001] The application relates to the technical field of smart meters, in particular to a non-magnetic meter control circuit, a non-magnetic meter circuit, a chip and a meter. Background technique [0002] With the rapid development of electronic communication technology and the Internet of Things, traditional mechanical meters are gradually replaced by smart meters. There are a variety of measurement methods for smart meters. Among them, non-magnetic meters have the advantages of strong anti-interference, easy cost control, and good accuracy, and are widely favored. At present, the working principle of the existing non-magnetic meter is to charge the capacitor first. When the charge accumulates to a preset amount, the capacitor is connected to the LC oscillation circuit to generate oscillation. Due to energy loss, the oscillation will attenuate. , place the LC oscillating circuit above the turntable of the meter. When the LC oscillating circuit is in the me...
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IPC IPC(8): H02J7/00
Inventor 张弛冯立松邹超凡梁洁
Owner NATIONZ TECH INC