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Valve driving circuit and valve control method for intelligent gas meter

A valve drive circuit, valve control technology, applied in valve details, valve devices, engine components, etc., can solve problems such as increased cost, lack of second-line valves, inconvenient gas meter control, etc., to improve compatibility and improve control efficiency. Effect

Pending Publication Date: 2022-02-11
QIANWEI KROMSCHRODER METERS CHONGQING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The second-line valve and the four-line valve are determined by the hardware equipment. Once assembled, it is difficult to change. The second-line valve cannot accurately sense the operating status of the valve, which is not convenient for the control and use of the gas meter. Replacement of hardware will increase the cost
[0004] Therefore, there is a lack of a design that can help the gas meter effectively detect the operating state of the second-line valve, and is also applicable to the control of the four-line valve

Method used

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  • Valve driving circuit and valve control method for intelligent gas meter
  • Valve driving circuit and valve control method for intelligent gas meter
  • Valve driving circuit and valve control method for intelligent gas meter

Examples

Experimental program
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Effect test

Embodiment 1

[0047] see Figure 1-3 , this embodiment provides a smart gas meter valve drive circuit, including a gas meter processor U10, a valve drive chip IC1 and a valve interface P8, the valve interface P8 in this embodiment is a four-wire valve interface, it should be noted that the four The wire valve interface can be connected to both the four-wire valve and the second-wire valve. The difference is that the second-wire valve only needs to be connected to the first pin and the first pin.

[0048] like figure 2 As shown, the first valve control signal terminal MOTO+ of the gas meter processor U10 is connected to the first input terminal IN1 of the valve driver chip IC1, and the second valve control signal terminal MOTO- of the gas meter processor U10 is connected to the second input terminal IN1 of the valve driver chip IC1. The input terminal IN2, the motor sleep pin NSLEEP of the valve drive chip IC1 is connected to the valve sleep control terminal MOTO_Sleep of the gas meter proce...

Embodiment 2

[0066] The design of this embodiment differs from that of Embodiment 1 only in that the valve interface P8 is changed to a second-line valve interface, namely image 3 The connection part between the first pin and the second pin is reserved, and the connection part between the third pin and the fourth pin does not exist.

[0067] The rest of the design is similar to Embodiment 1, see figure 1 and 2 , only the four-wire valve state input terminal MOTO_STATE_4 can be removed in the single-chip microcomputer U10, and will not be repeated here.

[0068] The driving circuit of this embodiment is only applicable to the second-line valve.

[0069] The valve control method of the present embodiment includes:

[0070] For valve opening control steps, see Figure 4 :

[0071] Step S101: the first valve control signal terminal MOTO+ outputs a low level, and the second valve control signal terminal MOTO- outputs a high level;

[0072] At this time, the first output terminal OUT1 of ...

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Abstract

The invention belongs to the technical field of gas meter valve control, and provides a valve driving circuit and valve control method for an intelligent gas meter. The valve driving circuit comprises a gas meter processor, a valve driving chip and a valve connector; the first output end of the valve driving chip is connected with a second pin of the valve connector; a second output end of the valve driving chip is connected in series with a fifth resistor and then is connected with a first pin of the valve connector; the first pin is connected with a valve state input end of the gas meter processor; the valve state input end is connected with a third resistor and a fourth resistor in series and then grounded; the valve state input end is further connected with a fourth capacitor and a seventh capacitor in series and then grounded; and a first capacitor and a second capacitor are connected between the first pin and the second pin in series. According to the valve driving circuit and valve control method for the intelligent gas meter provided by the embodiments of the invention, whether a valve is opened or closed can be identified only through the two pins, the control efficiency of the two-wire valve is improved, the valve connector is applicable to both the two-wire valve and the four-wire valve, and the compatibility of the driving circuit is improved.

Description

technical field [0001] The invention belongs to the technical field of gas meter valve control, and in particular relates to an intelligent gas meter valve driving circuit and a valve control method. Background technique [0002] The smart gas meter controls the opening and closing of the gas channel through the valve motor to drive the switch valve. The existing switch valves usually have two-wire control and four-wire control. Control the valve motor to rotate forward or reverse to realize the opening or closing of the valve. In addition to the two control signal lines, the four-wire control valve also includes at least one state signal line to detect whether the valve is running in place. The state signal is used to confirm whether the valve is fully Open or completely close, so as to enter the next step to control the motor to stop running. [0003] The second-line valve and the four-line valve are determined by the hardware equipment. Once assembled, it is difficult to...

Claims

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Application Information

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IPC IPC(8): F16K31/02F16K31/04
CPCF16K31/02F16K31/04
Inventor 张超平王健周鹏
Owner QIANWEI KROMSCHRODER METERS CHONGQING
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