CN210488258U - Motor valve control detection circuit, gas meter and water meter - Google Patents
Motor valve control detection circuit, gas meter and water meter Download PDFInfo
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- CN210488258U CN210488258U CN201922117308.5U CN201922117308U CN210488258U CN 210488258 U CN210488258 U CN 210488258U CN 201922117308 U CN201922117308 U CN 201922117308U CN 210488258 U CN210488258 U CN 210488258U
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- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 10
- 239000003990 capacitor Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
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Abstract
The utility model discloses a motor valve control detection circuitry, gas table and water gauge, this circuit includes: the motor valve comprises a motor and an in-place switch, the positive pole of the motor is connected with one end of the in-place switch and the second output end of the motor driving module, the negative pole of the motor is connected with the first output end of the motor driving module, and the other end of the in-place switch is connected with the control module; the control module is connected with the motor driving module and used for inputting a driving level signal to the motor driving module, the motor valve rotates forwards, when the control module receives a low level signal of the level signal output by the other end of the in-place switch, the control module inputs the driving level signal to the motor driving module, and the motor valve brakes. Through implementing the utility model discloses, only adopt three connecting wires to control and detect the electric machine valve between motor drive module and control module and the electrode valve, compare prior art and reduced the quantity of pencil, consequently, when the circuit welding, can improve welding efficiency.
Description
Technical Field
The utility model relates to a motor valve control technology field, concretely relates to motor valve control detection circuitry, gas table and water gauge.
Background
The motor valve is used as a key part of the gas meter and must have reliable performance. For a gas company, when a valve is closed or opened, the gas meter needs to be capable of reliably operating the valve so that the motor valve can work normally.
In the prior art, in order to detect the valve switch position in-place situation, a valve switch detection circuit is connected to a main board. In this valve switch detection circuitry, including 2 motor lead-out wires and 2 break detection lead-out wires, 4 circuits all need weld to the mainboard on, because the circuit is more, can reduce welding efficiency when the welding, increase detection circuitry's cost.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides an electric machine valve control detection circuitry, gas table and water gauge to it is more to solve among the prior art electric machine valve control circuit, can reduce welding efficiency when the welding, increases the technical problem of detection circuitry's cost.
The utility model provides a technical scheme as follows:
the embodiment of the utility model provides a first aspect provides an electric machine valve control detection circuitry, include: the motor valve comprises a motor and an in-place switch, the positive pole of the motor is connected with one end of the in-place switch and the second output end of the motor driving module, the negative pole of the motor is connected with the first output end of the motor driving module, and the other end of the in-place switch is connected with the control module; the control module is connected with the motor driving module, the control module inputs driving level signals to the motor driving module, the driving level signals control the motor to rotate forwards, reversely or brake, when the control module receives low level signals input by the in-place switch, the control module inputs driving level signals to the motor driving module, and the motor valve brakes.
Optionally, the motor valve control detection circuit further comprises: the line that control module and the switch that targets in place connect is the detection line that targets in place, the one end of resistance is connected control module and detection line that targets in place, the other end ground connection of resistance.
Optionally, the in-place switch comprises a rack, a movable contact and a fixed contact, an output shaft of the motor is in transmission connection with the rack, and the rack drives the movable contact to be in contact with the fixed contact.
Optionally, the driving level signal includes a first driving level signal, a second driving level signal and a third driving level signal, the first driving level signal causes the motor to rotate forward, and the first driving level signal includes: the high-level signal is received by a first input end of the motor driving module, the low-level signal is received by a second input end of the motor driving module, and when the control module receives a low level fed back by the in-place detection line, the motor valve is opened in place.
Optionally, the third drive level signal causes the motor to reverse, the third drive level signal comprising: the control module receives the level signal fed back by the in-place detection line, and when the level signal is converted from a high level to a low level, the motor valve is closed in place.
Optionally, the second driving level signal causes the motor to brake, the second driving level signal is a high level signal, and both the first input end and the second input end of the motor driving module receive the high level signal.
Optionally, the control module includes a pin motor _ t connected to the in-position detection line, the motor drive module includes a second pin out1 and a third pin out2, the IO port of the control module is configured to be pulled up for input, the first input end and the second input end of the motor drive module respectively input a first drive level signal of 1 and 0, the second pin out1 and the third pin out2 of the motor drive module respectively output a high level and a low level, the motor rotates forward, the rack drives the movable contact to be in contact with or away from the stationary contact, the third pin out2 of the motor drive module and the pin motor _ t of the control module are conducted, and the control module detects the low level and opens the valve to be in position.
Optionally, the IO port of the control module is configured as a floating input, the first input end and the second input end of the motor driving module respectively input a third driving level signal of 0 and 1, the second pin out1 and the third pin out2 of the motor driving module respectively output a high level and a low level, the third pin out2 of the motor driving module and the pin motor _ t of the control module are turned on, the pin motor _ t of the control module detects the high level, the motor rotates reversely, the rack pushes the moving contact and the static contact to separate, the in-place latch is disconnected, the pin motor _ t of the control module detects the low level, and the valve is closed in place.
The embodiment of the utility model provides a second aspect provides a gas meter, include: the electric machine valve control detection circuit according to any one of the first aspect and the first aspect of the embodiment of the present invention.
The embodiment of the utility model provides a third aspect provides a water gauge, include: the electric machine valve control detection circuit according to any one of the first aspect and the first aspect of the embodiment of the present invention.
The utility model discloses technical scheme has following advantage:
the embodiment of the utility model provides a motor valve control detection circuitry, gas table and water gauge receives the drive level signal of control module output through setting up motor drive module, only adopts three connecting wires can control and detect the motor valve between this motor drive module and control module and the electrode valve, compares prior art and has reduced the quantity of pencil, consequently, when the line welding, can improve welding efficiency, simplifies production technology.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a motor valve control detection circuit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a structure of a motor valve control detection circuit according to another embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
An embodiment of the utility model provides an electric machine valve control detection circuitry, as shown in fig. 1, this electric machine valve control detection circuitry includes: the motor valve 1 comprises a motor 11 and an in-place switch 12, the positive pole of the motor 11 is connected with one end of the in-place switch 12 and the second output end of the motor driving module 2, the negative pole of the motor 11 is connected with the first output end of the motor driving module 2, and the other end of the in-place switch 12 is connected with the control module 3; a line connecting the control module 3 and the in-place switch 12 may be defined as an in-place detection line, the control module 3 is connected to the motor driving module 2 and configured to input a driving level signal to the motor driving module 2, the driving level signal includes a first driving level signal, a second driving level signal and a third driving level signal, the first driving level signal controls the motor 11 to rotate forward, the second driving level signal controls the motor 11 to brake, and the third driving level signal controls the motor 11 to rotate backward.
Specifically, the in-place switch 12 in the motor valve 1 can be used for detecting whether the switch valve of the motor valve 1 reaches a corresponding position, the in-place switch 12 comprises a rack, a movable contact and a fixed contact, an output shaft of the motor 11 is in transmission connection with the rack, a transmission shaft of the motor 11 can drive the rack to move, and the rack can drive the movable contact to contact with or keep away from the fixed contact. When the valve is opened, after the motor driving module 2 drives the motor 11 to rotate forward under the action of the first driving level signal, the control module 3 can receive a level signal through an in-place detection line, if the level signal is low level, the detection is in place, and at the moment, the control module 3 can input a second driving level signal to the motor driving module 2 to control the motor valve 1 to brake; if the level signal transmitted from the bit detection line received by the control module 3 is not at a low level, the control module 3 may continuously detect the level signal output by the bit switch 12 until the level signal is at a low level. When the valve is closed, the control module 3 sends a third driving level signal to the motor driving module 2, the control module 3 detects a high level through the in-place detection line, after the motor driving module 2 drives the motor 11 to rotate reversely under the action of the third driving level signal, the control module 3 can receive the level signal through the in-place detection line, if the level signal is a low level, the detection is in place, at the moment, the control module 3 can input a second driving level signal to the motor driving module 2, and the motor 11 is controlled to brake; if the level signal transmitted by the in-position detection line received by the control module 3 is not at a low level, the control module 3 may continuously detect the level signal transmitted by the in-position detection line until the level signal is at a low level.
The embodiment of the utility model provides a motor valve control detection circuitry, through setting up the drive level signal that motor drive module received control module output, only adopt three connecting wires can control and detect the motor valve between this motor drive module and the control module and the electrode valve, compare prior art and reduced the quantity of pencil, consequently, when the line welding, can improve welding efficiency, simplify production technology.
As an optional implementation manner of the embodiment of the present invention, as shown IN fig. 2, the control module 3 connects the fifth pin IN2 and the sixth pin IN1 of the motor driving module 2, the second pin out1 of the motor driving module 2 connects to the negative electrode of the motor 11, the third pin out2 connects to the positive electrode of the motor 11, the pin motor _ t of the control module 3 is connected to the signal feedback end of the position switch 12 and one end of the resistor R1, and the other end of the resistor R1 is grounded. Specifically, the motor driving module 2 may select a chip of a DRV8837 model, a chip of a DRV8838 model, or a chip capable of implementing the same function. The motor driving module 2 may also be an H-bridge motor driving circuit. Specifically, the truth table for the motor drive module 2 is shown in the following table:
TABLE 1
When the motor driving module 2 receives the first driving level signal to control the motor valve 1 to rotate forward, the first driving level signal may include: a high level signal and a low level signal, the first input terminal IN1 of the motor driving module 2 receives the high level signal, and the second input terminal IN2 of the motor driving module 2 receives the low level signal. When the motor driving module 2 receives the second driving level signal to control the motor valve 1 to brake, the second driving level signal may include: the two high level signals, the first input terminal IN1 and the second input terminal IN2 of the motor driving module 2 respectively receive the two high level signals, thereby controlling the braking of the motor valve 1. In addition, the motor driving module 2 further includes a low power consumption input port nSLEEP, the low power consumption input port nSLEEP is connected to the control module 3, and the control module 3 can control the motor valve 1 to operate in the low power consumption mode through the port via the motor driving module 2.
Optionally, the motor valve control detection circuit further comprises: the first capacitor C1 and the second capacitor C2, one end of the first capacitor C1 is connected to the eighth pin VCC of the motor driving module 2 and is externally connected to the power supply, the other end of the first capacitor C1 is grounded, one end of the second capacitor C2 is connected to the first pin VM of the motor driving module 2 and is externally connected to the power supply, and the other end of the second capacitor C2 is grounded.
In the valve opening process, an IO port of the control module 3 is configured to be pulled up for input, and at the moment, a pin motor _ t is in a high level; the control module 3 respectively inputs the first driving level signals of 0 and 1 to the second input end (i.e., the fifth pin IN2) and the first input end (i.e., the sixth pin IN1) of the motor driving module 2, at this time, the motor driving module 2 respectively outputs a high level and a low level through the second pin out1 and the third pin out2 after processing the first driving level signals, and at this time, the motor starts to rotate forwards; the motor rotates and drives the rack to move, when the rack moves to a certain position, the rack pushes a movable contact and a fixed contact of the position switch 12 to be contacted, and then the position switch 12 is closed, so that a third pin out2 of the motor driving module 2 is conducted with a pin motor _ t of the control module 3, and the control module 3 detects a low level, namely, the valve is considered to be in place; the control module 3 inputs the second driving level signal of 1 to both the fifth pin IN2 and the sixth pin IN1 of the motor driving module 2, and the second pin out1 and the third pin out2 both output high levels after the second level signal processing of the motor driving module 2, at this time, the motor is braked.
IN the valve closing process, an IO port of the control module 3 is configured to be a floating input, the control module 3 respectively inputs 1 and 0 third driving level signals to a fifth pin IN2 and a sixth pin IN1 of the motor driving module 2, at this time, the motor driving module 2 respectively outputs a low level and a high level through a second pin out1 and a third pin out2 after processing the third driving level signals, and at this time, the motor starts to rotate reversely; since the in-place switch 12 is in a closed state, the third pin out2 of the motor driving module 2 and the pin motor _ t of the control module 3 are turned on, and the pin motor _ t of the control module 3 detects a high level; the motor rotates and drives the rack to move, when the rack moves to a certain position, the rack pushes a movable contact and a fixed contact of the in-place switch 12 to be separated, and then the in-place switch 12 is disconnected, and as a pin motor _ t of the control module 3 is grounded through a resistor R1, when the pin motor _ t of the control module 3 and a third pin out2 of the motor driving module 2 are disconnected, the pin motor _ t of the control module 3 detects a low level, and at the moment, the valve closing is considered to be in place. The control module 3 inputs the second driving level signal of 1 to both the fifth pin IN2 and the sixth pin IN1 of the motor driving module 2, and the motor driving module 2 processes the second driving level signal and then outputs a high level to both the second pin out1 and the third pin out2, at this time, the motor is braked.
Optionally, this motor valve control detection circuitry can be arranged in the control of motor valve and detection in gas table or the water gauge, also can be arranged in other needs to the device of motor valve control or detection, the utility model discloses do not restrict this.
Although the present invention has been described in detail with respect to the exemplary embodiments and the advantages thereof, those skilled in the art will appreciate that various changes, substitutions and alterations can be made to the embodiments without departing from the spirit of the invention and the scope of the invention as defined by the appended claims. For other examples, one of ordinary skill in the art will readily appreciate that the order of the process steps may be varied while maintaining the scope of the present invention.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (10)
1. A motor valve control detection circuit, comprising: a motor valve, a motor driving module and a control module,
the motor valve comprises a motor and an in-place switch, the positive pole of the motor is connected with one end of the in-place switch and the second output end of the motor driving module, the negative pole of the motor is connected with the first output end of the motor driving module, and the other end of the in-place switch is connected with the control module;
the control module is connected with the motor driving module, the control module inputs driving level signals to the motor driving module, the driving level signals control the motor to rotate forwards, reversely or brake, when the control module receives low level signals input by the in-place switch, the control module inputs driving level signals to the motor driving module, and the motor valve brakes.
2. The electromechanical valve control detection circuit of claim 1, further comprising: the line that control module and the switch that targets in place connect is the detection line that targets in place, the one end of resistance is connected control module and detection line that targets in place, the other end ground connection of resistance.
3. The motor valve control detection circuit of claim 2, wherein the in-place switch comprises a rack, a movable contact and a fixed contact, an output shaft of the motor is in transmission connection with the rack, and the rack drives the movable contact and the fixed contact to be in contact.
4. The motor valve control detection circuit of claim 3 wherein the drive level signals include a first drive level signal, a second drive level signal, and a third drive level signal, the first drive level signal causing the motor to rotate in a forward direction, the first drive level signal comprising: the high-level signal is received by a first input end of the motor driving module, the low-level signal is received by a second input end of the motor driving module, and when the control module receives a low level fed back by the in-place detection line, the motor valve is opened in place.
5. The motor valve control detection circuit of claim 4 wherein the third drive level signal causes the motor to reverse, the third drive level signal comprising: the control module receives the level signal fed back by the in-place detection line, and when the level signal is converted from a high level to a low level, the motor valve is closed in place.
6. The motor valve control detection circuit of claim 5 wherein the second drive level signal causes the motor to brake, the second drive level signal is a high level signal, and the first input and the second input of the motor drive module both receive the high level signal.
7. The motor valve control detection circuit of claim 6, wherein the control module comprises a pin motor _ t connected to the in-position detection line, the motor driving module comprises a second pin out1 and a third pin out2, the IO port of the control module is configured to be pulled up for input, the first input end and the second input end of the motor driving module respectively input a first driving level signal of 1 and 0, the second pin out1 and the third pin out2 of the motor driving module respectively output a high level and a low level, the motor rotates forwards, the rack drives the movable contact to be in contact with or away from the stationary contact, the third pin out2 of the motor driving module and the pin motor _ t of the control module are conducted, and the control module detects the low level and opens the valve to be in position.
8. The motor valve control detection circuit of claim 6, wherein the IO port of the control module is configured as a floating input, the first input terminal and the second input terminal of the motor driving module respectively input signals of a third driving level of 0 and 1, the second pin out1 and the third pin out2 of the motor driving module respectively output a high level and a low level, the third pin out2 of the motor driving module and the pin motor _ t of the control module are turned on, the pin motor _ t of the control module detects the high level, the motor rotates reversely, the rack pushes the movable contact and the static contact to be separated, the in-place latch is turned off, the pin motor _ t of the control module detects the low level, and the valve is turned off.
9. A gas meter, comprising: a motor valve control detection circuit as claimed in any one of claims 1 to 8.
10. A water meter, comprising: a motor valve control detection circuit as claimed in any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922117308.5U CN210488258U (en) | 2019-11-29 | 2019-11-29 | Motor valve control detection circuit, gas meter and water meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922117308.5U CN210488258U (en) | 2019-11-29 | 2019-11-29 | Motor valve control detection circuit, gas meter and water meter |
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| CN210488258U true CN210488258U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782271A (en) * | 2020-12-29 | 2021-05-11 | 沈阳工业大学 | Crack detection device and method based on balanced electromagnetic technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112782271A (en) * | 2020-12-29 | 2021-05-11 | 沈阳工业大学 | Crack detection device and method based on balanced electromagnetic technology |
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Address after: Zhengtai Instrument Measurement Industrial Park, No.1 Liangce Road, Beibaixiang Town, Leqing City, Wenzhou City, Zhejiang Province, 325603 Patentee after: ZHEJIANG CHINT INSTRUMENT & METER Co.,Ltd. Address before: 325603 Wenzhou Daqiao Industrial Park, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG CHINT INSTRUMENT & METER Co.,Ltd. |