CN218037755U - Valve control system of valve-controlled water meter - Google Patents
Valve control system of valve-controlled water meter Download PDFInfo
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- CN218037755U CN218037755U CN202222483865.0U CN202222483865U CN218037755U CN 218037755 U CN218037755 U CN 218037755U CN 202222483865 U CN202222483865 U CN 202222483865U CN 218037755 U CN218037755 U CN 218037755U
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- water meter
- management circuit
- valve control
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Abstract
The utility model provides a valve control system of a valve-controlled water meter, which comprises a water meter CPU, a valve control management circuit, an NB-IOT communication management circuit, a valve and a user terminal; one end of the water meter CPU is in communication connection with the user terminal through the NB-I OT communication management circuit, and the other end of the water meter CPU is connected with the valve through the valve control management circuit. After the water meter CPU confirms the valve opening/closing instruction, the valve control management circuit controls the opening and closing of the valve, the valve control circuit has the functions of detecting and feeding back the valve execution current and the in-place signal, can detect the valve execution current and feed back the valve execution current and the in-place signal to the water meter CPU, further the water meter CPU can more accurately judge the in-place state of the valve, and the accuracy and the reliability of the in-place judgment of the valve are improved.
Description
Technical Field
The utility model relates to an intelligence water gauge technical field specifically is valve control system of valve accuse water gauge.
Background
The Internet of things valve-controlled water meter has the characteristics of high freezing resistance, various water resistance, internet of things communication, high precision and the like, and is based on the Internet of things technology to realize the functions of remote real-time check and collection of water data, meter reading, valve control, air payment and the like.
The valve control of the traditional valve-controlled water meter judges and stops the operation of the valve by an in-place switch signal. However, when a valve to-position switch fault or a valve to-position switch route fault occurs, the in-position signal is lost, and the operation of the valve cannot be judged and stopped, so that the accuracy and reliability of the in-position judgment of the valve are affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, the valve control system who provides the valve accuse water gauge solves traditional valve control scheme single to the judgement mode that the valve targets in place, the not strong problem of reliability.
The utility model provides a valve control system of valve-controlled water meter, which comprises a water meter CPU, a valve control management circuit, an NB-IOT communication management circuit, a valve and a user terminal;
one end of the water meter CPU is in communication connection with the user terminal through the NB-IOT communication management circuit and is used for receiving a valve opening/closing instruction sent by the user terminal through the NB-IOT communication management circuit; the other end of the water meter CPU is connected with the valve through the valve control management circuit and is used for controlling the valve to be opened and closed through the valve control management circuit after the valve opening/closing instruction is confirmed;
the valve control management circuit is used for receiving a valve opening/closing instruction and controlling the opening and closing of the valve; and the control circuit is used for detecting the valve execution current and the in-place signal and feeding back the valve execution current and the in-place signal to the water meter CPU.
Furthermore, the valve control system of the valve-controlled water meter also comprises a radio frequency antenna, an NB-IOT base station, an NB-IOT core network and a water meter service platform; the NB-IOT communication management circuit is connected with one end of the NB-IOT base station through a radio frequency antenna, and the other end of the NB-IOT base station is in communication connection with the user terminal through a water meter service platform.
Furthermore, the valve control system of the valve-controlled water meter also comprises a power supply management circuit and a power supply, and the water meter CPU is connected with the power supply through the power supply management circuit.
Further, the power supply is a 3.6V lithium battery.
Further, the valve is an electric O-shaped ball valve.
Further, the user terminal comprises a mobile phone, a computer, a tablet computer and a smart watch.
The utility model provides a valve control system of valve accuse water gauge, water gauge CPU passes through valve control management circuit and connects the valve, after confirming the valve instruction of opening/closing, through valve control management circuit control flap's switch, valve control circuit has the function of the detection and the feedback of valve executive current, can detect valve executive current and the signal that targets in place, and carry out the valve executive current and signal feedback to water gauge CPU that targets in place, and then the judgement valve state that targets in place that makes water gauge CPU can be more accurate, the accuracy and the reliability of the judgement that targets in place of valve have been improved.
Drawings
Fig. 1 is a schematic structural diagram of a valve control system according to an embodiment of the present invention;
fig. 2 is another schematic structural diagram of a valve control system according to an embodiment of the present invention;
fig. 3 is a circuit diagram of a valve control management circuit according to an embodiment of the present invention;
fig. 4 is a circuit diagram of a power supply management circuit according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the valve control of the traditional valve-controlled water meter, when a valve opening/closing instruction is executed, the valve is driven by an electric actuator to start rotating, when the valve rotates to a limit opening (closing) position, the valve sends an in-place signal for opening (closing) in place, and the traditional valve control judges and stops the operation of the valve through the in-place signal sent by the valve. However, when a valve limit switch fault or an in-place switch route fault occurs, in-place signals are lost, and the operation of the valve cannot be judged and stopped, so that the accuracy and reliability of in-place judgment of the valve are influenced. Therefore, the present invention provides a valve control system for a valve-controlled water meter to solve the above problems, and the following description is provided by way of a plurality of embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a valve control system according to an embodiment of the present invention. Referring to fig. 1, the valve control system of valve-controlled water meter provided by the utility model comprises a water meter CPU, a valve control management circuit, an NB-IOT communication management circuit, a valve and a user terminal; preferably, the user terminal may be a mobile phone, a computer, a tablet computer or a smart watch.
One end of the water meter CPU is in communication connection with a user terminal through an NB-IOT communication management circuit and is used for receiving a valve opening/closing instruction sent by the user terminal through the NB-IOT communication management circuit; the other end of the water meter CPU is connected with the valve through the valve control management circuit and is used for controlling the valve to be opened and closed through the valve control management circuit after the valve opening/closing instruction is confirmed;
the valve control management circuit is used for receiving a valve opening/closing instruction and controlling the opening and closing of the valve; and the control circuit is used for detecting the valve execution current and the in-place signal and feeding back the valve execution current and the in-place signal to the water meter CPU.
Specifically, taking the control of the water meter valve to close as an example, the working principle of the valve control system shown in fig. 1 is as follows: when a user is in arrearage or meets the condition that the valve needs to be closed remotely, a manager sends a valve closing instruction to the water meter CPU through the user terminal, the water meter CPU sends the valve closing instruction to the valve control management circuit after confirming that the valve closing instruction is legal, the valve is controlled to be closed through the valve control management circuit, and the valve control circuit receives power supplied by the valve execution motor and starts to drive the valve rod to rotate to close the valve. The valve control circuit detects the valve execution current and the in-place signal and feeds the valve execution current and the in-place signal back to the water meter CPU, so that the water meter CPU can more accurately judge the in-place state of the valve, and the accuracy and the reliability of the in-place judgment of the valve are improved. After the water meter CPU receives the valve execution current, the valve execution current is compared with the valve in-place current, and when the valve execution current reaches the valve in-place current, whether the valve is closed in place can be judged more accurately by combining the detection condition of the in-place switch signal.
It can be understood that, even if the in-place signal is lost due to the fault of the switching line of the valve, the water meter CPU can acquire the valve execution current through the valve control management circuit, and compare the valve execution current with the valve in-place current to judge whether the valve is closed in place. Wherein, the valve execution current refers to the current power supply current of the valve; the valve in-place current refers to the power supply current which is required to be achieved when the valve is switched in place.
Fig. 2 is another schematic structural diagram of the valve control system according to an embodiment of the present invention, referring to fig. 2, the valve control system of the valve-controlled water meter further includes a radio frequency antenna, an NB-IOT base station, an NB-IOT core network, and a water meter service platform; the NB-IOT communication management circuit is connected with one end of the NB-IOT base station through a radio frequency antenna, and the other end of the NB-IOT base station is in communication connection with the user terminal through a water meter service platform.
Preferably, the valve in fig. 1 and 2 can be an electric O-ball valve. The electric O-shaped ball valve consists of main components such as an electric actuator, a limit switch, a valve rod, a valve seat, a ball body and the like. When receiving a valve opening/closing instruction, the water meter CPU controls the valve control management circuit to provide +3V voltage for the electric actuator of the valve, the electric actuator drives the valve rod, the valve rod drives the ball valve to rotate, and when the valve rod rotates to the position of the limit switch, the in-place signal is triggered, so that the valve opening/closing operation is realized.
Specifically, the operation principle of the valve control system shown in fig. 2 is described by taking the control of the water meter valve to close as an example: when a user is in arrearage or meets the condition that a valve needs to be remotely closed, a manager sends a valve closing instruction to a water meter CPU through a user terminal, the valve closing instruction reaches an NB-IOT base station through a water meter service platform and an NB-IOT core network, the NB-IOT base station is connected with an NB-IOT communication management circuit through a radio frequency antenna, the NB-IOT communication management circuit rapidly jumps from a PSM power saving mode to a working mode at the moment, the valve closing instruction is transmitted to the water meter CPU, after the water meter CPU confirms that the valve closing instruction is legal, the water meter CPU controls the valve control management circuit to provide +3V voltage for an electric actuator of the valve, and the electric actuator of the valve starts to drive a valve rod to rotate to close the valve after supplying power.
Fig. 3 is the circuit diagram of the valve control management circuit provided by the embodiment of the present invention, referring to fig. 3, the valve control management circuit is composed of three switching triodes Q1, Q2, Q3, a resistor R20_1, a resistor R20_2, sampling resistors R3_1, R3_2, R3_3 and R3_4, a capacitor C40, a valve control chip U3 and a voltage follower, and the model and capacity of each specific device are as shown in fig. 3. The valve control management circuit is connected with a water meter CPU through an XTHI pin XTHO pin and a PB06 pin, after the water meter CPU confirms that a valve closing instruction is legal, the valve control management circuit is controlled to provide +3V MCU _VCCvoltage for an electric actuator of the valve, and the electric actuator of the valve supplies power to drive a valve rod to rotate to close the valve.
The valve of the valve control management circuit executes the current detection principle: j5_1 and J5 \/2 are respectively a positive control end and a reverse control end of the electric actuator, after receiving a valve opening/closing command, the J5_1/J5_2 provides a positive/reverse power supply for the electric actuator, the valve starts to execute valve opening/closing, meanwhile, sampling resistors R3_1 and R3_2 of valve execution current convert current information into voltage, the voltage is transmitted to R3_4 through a voltage follower, voltage values of R3_3 and R3_4 are obtained, the voltage information is transmitted to a water meter CPU, and the water meter CPU converts the obtained voltage information into corresponding valve execution current information. And then the running state of the valve can be judged according to the valve execution current.
Fig. 4 is the circuit diagram of the power supply management circuit provided by the embodiment of the present invention, referring to fig. 4, on the basis of the above embodiment, the valve control system of the valve-controlled water meter further includes a power supply management circuit and a power supply, and the water meter CPU is connected to the power supply through the power supply management circuit. Preferably, the power supply can be a 3.6V lithium battery. The power port in fig. 4 is a 3.6V lithium battery socket, and then 3vmcu _vccvoltage is obtained through voltage stabilization and filtering. Wherein D7 is a reverse battery protection diode.
The utility model provides a valve control system of valve accuse water gauge, water gauge CPU passes through valve control management circuit connection valve, after confirming the open/close valve instruction, through valve control management circuit control flap's switch, valve control circuit has the detection of valve executive current and the function of feedback, can detect valve executive current and the signal that targets in place, and carry out the current with the valve and signal feedback that targets in place to water gauge CPU, and then make the judgement valve state that targets in place that water gauge CPU can be more accurate, the accuracy and the reliability of valve judgement that targets in place have been improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A valve control system of a valve-controlled water meter is characterized by comprising a water meter CPU, a valve control management circuit, an NB-IOT communication management circuit, a valve and a user terminal;
one end of the water meter CPU is in communication connection with the user terminal through the NB-IOT communication management circuit and is used for receiving a valve opening/closing instruction sent by the user terminal through the NB-IOT communication management circuit; the other end of the water meter CPU is connected with the valve through the valve control management circuit and is used for controlling the valve to be opened and closed through the valve control management circuit after the valve opening/closing instruction is confirmed;
the valve control management circuit is used for receiving a valve opening/closing instruction and controlling the opening and closing of the valve; and the control circuit is used for detecting the valve execution current and the in-place signal and feeding back the valve execution current and the in-place signal to the water meter CPU.
2. The valve control system of claim 1, further comprising a radio frequency antenna, an NB-IOT base station, an NB-IOT core network, and a water meter service platform;
the NB-IOT communication management circuit is connected with one end of the NB-IOT base station through a radio frequency antenna, and the other end of the NB-IOT base station is in communication connection with the user terminal through a water meter service platform.
3. The valve control system of claim 1, further comprising a power management circuit and a power source, wherein the water meter CPU is connected to the power source through the power management circuit.
4. The valve control system of claim 3, wherein the power source is a 3.6V lithium battery.
5. The valve control system of claim 1, wherein the valve is an electric O-ball valve.
6. The valve control system of claim 1, wherein the user terminal comprises a cell phone, a computer, a tablet, and a smart watch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222483865.0U CN218037755U (en) | 2022-09-20 | 2022-09-20 | Valve control system of valve-controlled water meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222483865.0U CN218037755U (en) | 2022-09-20 | 2022-09-20 | Valve control system of valve-controlled water meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218037755U true CN218037755U (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222483865.0U Active CN218037755U (en) | 2022-09-20 | 2022-09-20 | Valve control system of valve-controlled water meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218037755U (en) |
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- 2022-09-20 CN CN202222483865.0U patent/CN218037755U/en active Active
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