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Dual power supply system for remote smart gas meter

A technology of dual power supply and gas meter, which is applied in the direction of power network operating system integration, emergency power supply arrangement, information technology support system, etc. Module power supply requirements and other issues, to achieve the effect of smooth switching and avoid current jitter

Inactive Publication Date: 2018-11-13
安徽鸿凌机电仪表(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the shortcomings in the prior art that cannot meet the power supply requirements of the current wireless communication module, the power supply is unstable and reliable when the dual power supply is switched, and the microcontroller cannot sense the power supply status in time, and provide a temporary energy storage circuit Dual power supply system for remote smart gas meters with power supply, software and hardware coordinated switching

Method used

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  • Dual power supply system for remote smart gas meter

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Effect test

Embodiment 1

[0031] Embodiment 1: A dual power supply system for a remote intelligent gas meter, consisting of a protection circuit 1, a protection circuit 2, an energy storage circuit, a voltage stabilization circuit, a dry battery voltage detection circuit, a dry battery low voltage alarm circuit, a valve drive circuit, a lithium battery Composed of battery voltage detection circuit, switch circuit, lithium battery low voltage alarm circuit, power supply switching circuit, RF wireless communication module and main control MCU;

[0032] Among them, the voltage regulator circuit is output by low-power LDO 3.6V, the energy storage circuit is mainly composed of supercapacitor, voltage comparator, triode, etc., the voltage detection circuit of dry battery and lithium battery is collected and calculated by the main control MCU after divided by precision resistors, The low-voltage alarm circuit for dry batteries and lithium batteries is composed of low-power consumption voltage detection chips, ...

Embodiment 2

[0034] Embodiment 2: The lithium battery is connected to a protection circuit 2, the protection circuit 2 is connected with a lithium battery voltage detection circuit and a lithium battery low voltage alarm circuit, and at the same time the lithium battery voltage detection circuit and the lithium battery low voltage alarm circuit are connected to the main control MCU , the protection circuit 2 is also connected to the power supply switching circuit at the same time;

[0035] At the same time, the dry battery is connected to the protection circuit 1, and the protection circuit 1 is connected with the dry battery voltage detection circuit and the dry battery low voltage alarm circuit. There are a voltage stabilizing circuit, an energy storage circuit and a valve driving circuit, wherein the voltage stabilizing circuit is connected to the power supply switching circuit, the energy storage circuit is connected to the power supply switching circuit, the main control MCU and the va...

Embodiment 3

[0038]Regardless of whether you choose dry batteries or lithium batteries to power the system, the main control MCU of the system is powered by the switching circuit first. The protection circuit 1 and the protection circuit 2 are mainly to prevent the circuit from being damaged by reverse current in the case of reverse connection of the power supply. In order to ensure the minimum pressure loss of the system, The protection circuit is composed of field effect transistors. In the case of external battery power supply, the energy storage circuit will also store a certain amount of electricity; the energy storage circuit is mainly composed of a voltage comparator, a triode and a super capacitor. When the voltage at both ends of the super capacitor is less than the set voltage When the voltage value of the comparator is higher, the triode is turned on to charge the supercapacitor, otherwise the triode is turned off, and the charging ends. The main function of the energy storage ci...

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Abstract

The invention discloses a dual power supply system for a remote smart gas meter, and relates to the technical field of gas meters. The dual power supply system comprises a protection circuit 1, a protection circuit 2, an energy storage circuit, a voltage regulator circuit, a dry battery voltage detection circuit, a dry battery low voltage alarm circuit, a valve drive circuit, a lithium battery voltage detection circuit, a switch circuit, a lithium battery low voltage alarm circuit, a power supply switching circuit, an RF (radio frequency) wireless communication module and a main control MCU (microprogrammed control unit). By adopting the dual power supply system, the shortcomings that power supply requirements of the current wireless communication module cannot be met, the power supply isunstable and unreliable when the dual power supply is switched, and the power state cannot be sensed by a microcontroller in time in the prior art are overcome; and the invention provides the dual power supply system for the remote smart gas meter with temporary power supply of the energy storage circuit and cooperative switching of software and hardware.

Description

Technical field: [0001] The invention relates to the technical field of gas meters, in particular to a dual power supply system for remote smart gas meters. Background technique: [0002] Far Easing smart gas meters have better solved the problems of difficult meter reading and inconvenient billing of traditional gas meters, and have been more and more widely used. Far Easing smart gas meters need a separate power supply, and it is correct to ensure the reliability of power supply. The premise of metering, remote transmission, valve control and other operations. [0003] The traditional power supply method for smart gas meters: one uses 4 AAA dry batteries in series, and uses a low-dropout linear regulator (LDO) to step down the power supply. In this method, when the battery power is insufficient, the remote wireless module will not work normally. , resulting in problems such as remote meter reading and inability to monitor the operating status of the gas meter; the other u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06
CPCH02J7/36H02J9/061Y04S20/20Y02B70/30
Inventor 林路生王友瑞胡荣贵徐茂华
Owner 安徽鸿凌机电仪表(集团)有限公司
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