CN218444004U - Water meter with anti-dismantling detection function - Google Patents
Water meter with anti-dismantling detection function Download PDFInfo
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- CN218444004U CN218444004U CN202222187388.3U CN202222187388U CN218444004U CN 218444004 U CN218444004 U CN 218444004U CN 202222187388 U CN202222187388 U CN 202222187388U CN 218444004 U CN218444004 U CN 218444004U
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- water meter
- magnetic field
- control device
- field sensor
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Abstract
The utility model discloses a water meter with anti-disassembly detection, which comprises a body, a control device, a communication module and a linear magnetic field sensor, wherein the control device, the communication module and the linear magnetic field sensor are arranged on the body; the linear magnetic field sensor can detect the intensity of the geomagnetic field of the environment where the water meter is located and the change of the included angle between the sensor and the magnetic field direction, when the water meter is moved or reversely installed, the control device can detect the change of the output voltage value caused by the linear magnetic field sensor, and when the change of the output voltage value exceeds a preset value, the control device can send alarm information to a remote monitoring terminal through the communication module.
Description
Technical Field
The utility model relates to a water gauge field especially relates to a detection water gauge is prevented tearing open in area.
Background
The water meter is a measuring instrument for measuring the volume of water used by a user, and after the water meter is installed, the water meter risks being moved (abnormally disassembled or stolen) and reversely installed.
Currently, only a few intelligent water meters are equipped with a GPS (Global Positioning System) Positioning device, and the GPS Positioning device can provide the position information (e.g., coordinates) of the water meter for a manufacturer or a water meter management unit.
However, first, the manufacturer and the water meter management entity do not actually need to know the coordinate position information of the water meter (because the water meter in use has registered its corresponding position), but rather "position change" of the water meter, and therefore the coordinate information sent by the water meter is redundant to the manufacturer or the water meter management entity; secondly, the position change of the water meter is judged through the GPS positioning device, the position information (namely coordinate data) at different moments needs to be compared and operated, if the comparison and operation is executed by the water meter body, the power consumption of the water meter is greatly increased, if the comparison and operation is executed by a remote operation terminal, the water meter needs to continuously send a large amount of position information (namely coordinate data) to the operation terminal, and the power consumption of the water meter is also increased. Meanwhile, for the water meter which is reversely installed, the installation position of the water meter is not obviously changed, so that the common GPS positioning device cannot detect the water meter.
In addition, the hardware cost of the GPS is high, the power consumption is high, the size is large, and the GPS is not beneficial to popularization.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a detection water gauge is prevented tearing open in area to solve the problem that current water gauge mobile monitoring device is with high costs, the consumption is big, bulky.
The purpose of the utility model is realized by adopting the following technical scheme:
the utility model provides a detection water gauge is prevented tearing open in area, includes the body and locates controlling means, communication module and linear magnetic field sensor on the body, controlling means respectively with communication module and linear magnetic field sensor are connected, communication module is used for being connected with monitor terminal wireless communication.
In some optional embodiments, the body is further provided with an amplifying circuit, and the amplifying circuit is used for amplifying an output signal generated by the linear magnetic field sensor and transmitting the output signal to the control device.
In some optional embodiments, the amplifying circuit includes a transistor, a base of the transistor is connected to the linear magnetic field sensor, a collector of the transistor is connected to the control device, and an emitter of the transistor is grounded through a first resistor.
In some optional embodiments, the amplifying circuit includes a second resistor, and the collector of the triode is connected to the digital-to-analog conversion pin of the control device through the second resistor.
In some optional embodiments, a power module is further disposed on the body, and the control device is connected to the power module.
In some optional embodiments, the base of the transistor is connected to the power supply module through a third resistor, and the collector of the transistor is connected to the power supply module through a fourth resistor.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the linear magnetic field sensor can detect geomagnetic field intensity of an environment where the water meter is located and change of an included angle between the sensor and a magnetic field direction, when the water meter is moved or reversely installed, the control device can detect output voltage value change caused by the linear magnetic field sensor, and when the output voltage value change exceeds a preset value, the control device sends alarm information to a monitoring terminal at the far end through the communication module.
Drawings
Fig. 1 is a schematic view of a detection module of a water meter with tamper detection according to the present invention;
fig. 2 is a schematic view of an amplifying circuit of the utility model with a tamper-proof water meter;
in the figure:
10. a control device; 20. a communication module; 30. and monitoring the terminal.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
With reference to fig. 1 and fig. 2, schematically showing the water meter with tamper-proof function of the present invention, the water meter includes a body, and a control device 10 (i.e., U2 in fig. 2), a communication module 20 and a linear magnetic field sensor U1, which are disposed on the body. The control device 10 is preferably an MCU (micro controller Unit), the linear magnetic field sensor U1 includes but is not limited to a magnetic resistance sensor, the control device 10 is connected to the communication module 20 and the linear magnetic field sensor U1, respectively, and the communication module 20 is configured to be connected to the monitoring terminal 30 in a wireless communication manner.
When the magnetic field intensity of the environment where the linear magnetic field sensor U1 is located is larger along the sensitive direction component, the possibility that an electron tunnel penetrates through the insulating layer is higher, the macroscopic expression of the electron tunnel is that the resistance is smaller, and the output voltage value of the linear magnetic field sensor U1 is increased; conversely, electrons are less likely to tunnel through the insulating layer, which macroscopically indicates a higher resistance, and the output voltage value of the linear magnetic field sensor U1 decreases. Therefore, whether the water meter is moved can be judged by detecting the change of the output voltage value of the linear magnetic field sensor U1. When the linear magnetic field sensor U1 is reversely installed, the positive and negative polarities of the output voltage of the linear magnetic field sensor U1 are reversed, so that whether the water meter is reversely installed or not can be judged. Therefore, the linear magnetic field sensor U1 can sense the change of the magnetic field only when the water meter is detached or moved, and the linear magnetic field sensor U1 can generate the change of the output voltage value after sensing the change of the magnetic field, so that the power consumption is lower. Meanwhile, the linear magnetic field sensor U1 has high precision, low cost and small volume, and can be fixed on the same circuit board with the MCU.
The body is also provided with an amplifying circuit and a power supply module, and the amplifying circuit is used for amplifying an output signal generated by the linear magnetic field sensor U1 and transmitting the output signal to the control device 10. The amplifying circuit comprises a triode Q1, a first resistor R4, a second resistor R5, a third resistor R1 and a fourth resistor R3, the base of the triode Q1 is connected with the linear magnetic field sensor U1, the collector of the triode Q1 is connected with a digital-to-analog conversion pin ADC of the control device 10 through the second resistor R5, the emitter of the triode Q1 is grounded through the first resistor R4, and the triode Q1 amplifies an output signal generated by the linear magnetic field sensor U1 and transmits the amplified output signal to the control device 10. In addition, the control device 10 is connected to the power supply module, the base of the transistor Q1 is connected to the power supply module through a third resistor R1, and the collector of the transistor Q1 is connected to the power supply module through a fourth resistor R3.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the linear magnetic field sensor U1 can detect the intensity of the geomagnetic field of the environment where the water meter is located and the change of the included angle between the geomagnetic field and the magnetic field direction, when the water meter is moved or reversely installed, the control device 10 can detect the change of the output voltage value caused by the linear magnetic field sensor U1, and when the change of the output voltage value exceeds a preset value, the control device 10 sends alarm information to the remote monitoring terminal 30 through the communication module 20.
The above-mentioned only be the embodiment of the present invention, not consequently the restriction of the patent scope of the present invention, all utilize the equivalent structure or equivalent flow transform made of the content of the specification and the attached drawings, or directly or indirectly use in other relevant technical fields, all including in the same way the patent protection scope of the present invention.
Claims (6)
1. The utility model provides a water gauge is detected in area anti-disassembly, its characterized in that includes the body and locates controlling means, communication module and the linear magnetic field sensor on the body, controlling means respectively with communication module and linear magnetic field sensor are connected, communication module is used for being connected with monitor terminal wireless communication.
2. The water meter with tamper detection of claim 1, wherein the body further includes an amplifier circuit for amplifying the output signal generated by the linear magnetic field sensor and transmitting the amplified signal to the control device.
3. The water meter of claim 2, wherein the amplifying circuit comprises a transistor, a base of the transistor is coupled to the linear magnetic field sensor, a collector of the transistor is coupled to the control device, and an emitter of the transistor is coupled to ground through a first resistor.
4. The water meter with tamper-proof detection of claim 3, wherein the amplifying circuit includes a second resistor, and the collector of the transistor is connected to the digital-to-analog conversion pin of the control device via the second resistor.
5. The water meter with tamper detection of claim 3, wherein the body further includes a power module, and the control device is connected to the power module.
6. The water meter with tamper detection of claim 5, wherein a base of the transistor is connected to the power module through a third resistor, and a collector of the transistor is connected to the power module through a fourth resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222187388.3U CN218444004U (en) | 2022-08-18 | 2022-08-18 | Water meter with anti-dismantling detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222187388.3U CN218444004U (en) | 2022-08-18 | 2022-08-18 | Water meter with anti-dismantling detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218444004U true CN218444004U (en) | 2023-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222187388.3U Active CN218444004U (en) | 2022-08-18 | 2022-08-18 | Water meter with anti-dismantling detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218444004U (en) |
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2022
- 2022-08-18 CN CN202222187388.3U patent/CN218444004U/en active Active
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