Security type ultrasonic gas meter

Abstract

The utility model relates to the technical field of gas meters, in particular to a security and protection type ultrasonic gas meter which comprises a calculation processing core used for resource allocation and data processing, a gas metering module used for counting the gas usage amount and a meter disassembly detection module used for detecting the position state of the gas meter. The cover opening detection module is used for detecting the connection state of a gas meter connection cover, the alarm module is used for reminding and alarming, the gas metering module comprises a metering sampling circuit and an ultrasonic metering module, and the calculation processing core is connected with the ultrasonic metering module through the metering sampling circuit. The ultrasonic gas meter adopts ultrasonic waves to realize detection and metering of gas, can improve the metering precision through non-contact measurement, is long in service life, can realize a series of tasks such as position state detection of the gas meter, cover opening detection of a connecting cover of the gas meter and reminding and alarming, can effectively prevent lawbreakers from disassembling and adjusting the gas meter, and improves the working efficiency. And economic benefits of users and gas companies are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of gas meters, in particular to a security type ultrasonic gas meter. Background Art

[0002] A gas meter is a metering device used to measure the amount of gas used. The usual way to connect a gas meter is to connect one end to a gas pipeline and the other end to a stove. When a user uses gas, the gas enters the stove from the gas pipeline through the gas meter and the connecting pipeline. The general diaphragm gas meter measures the amount of gas used through a mechanical meter set in the gas meter, that is, when the gas passes through the gas meter, it pushes the transmission mechanism set in the gas meter to drive a mechanical counter to jump. When the gas stops flowing, the counter also stops jumping. Finally, the amount of gas used is determined by the number displayed on the counter. However, this type of gas meter has the following disadvantages: first, it is large in size and occupies a large space during installation, which is very inconvenient. Secondly, this type of mechanical gas meter will experience accuracy degradation after a long period of use, that is, the transmission mechanism of the gas meter will age, reducing the measurement accuracy. In addition, the mechanical transmission will produce some noise, affecting the indoor environment, and has a greater safety hazard. Lawless elements can dismantle and adjust the meter at will, which is easy to cause losses to users or gas companies. Utility Model Content

[0003] The technical problem to be solved by the utility model is that the existing gas meters have poor measurement accuracy and great potential safety hazards.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: a security type ultrasonic gas meter, including a computing and processing core for resource allocation and data processing, a gas metering module for counting gas usage, a meter removal detection module for detecting the position status of the gas meter, a cover opening detection module for detecting the connection status of the gas meter connection cover, and an alarm module for prompting an alarm, the gas metering module includes a metering sampling circuit and an ultrasonic metering module, the computing and processing core is connected to the ultrasonic metering module through the metering sampling circuit, the signal output end of the meter removal detection module and the signal output end of the cover opening detection module are connected to the computing and processing core, and the signal input end of the alarm module is connected to the computing and processing core.

[0005] When the utility model is working, ultrasonic wave is used to detect and measure gas. Through non-contact measurement, the measurement accuracy can be improved. The service life is long and a series of tasks such as the detection of the position status of the gas meter, the opening detection of the gas meter connection cover, and reminder alarm can be realized. It can effectively prevent lawless elements from dismantling and adjusting the meter, and protect the economic interests of users and gas companies.

[0006] Preferably, the metering sampling circuit includes a resistor R58, a resistor R59, a resistor R60, a resistor R61, a capacitor C29 and a transistor Q22, the second end of the ultrasonic metering module is connected to the ground through the capacitor C29, the second end of the ultrasonic metering module is connected to the base of the transistor Q22 through the resistor R61, the collector of the transistor Q22 is connected to the ground through the capacitor C29, the emitter of the transistor Q22 is connected to the power supply through the resistor R59, the PC2 port of the computing and processing core is connected to the emitter of the transistor Q22 through the resistor R58, the PE6 port of the computing and processing core is connected to the third end of the ultrasonic metering module, and the fourth section of the ultrasonic metering module is connected to the PC3 port of the computing and processing core through the resistor R60.

[0007] When the utility model is working, ultrasonic wave can be used to realize the detection and measurement of gas, and it has the characteristics of non-contact measurement, no mechanical wear and convenient installation, and high detection accuracy.

[0008] Preferably, the meter disassembly detection module includes a resistor R62 and a tilt detection switch S2, the PH15 port of the computing processing core is connected to the first end of the tilt detection switch S2 and to the power supply through the resistor R62, and the second end of the tilt detection switch S2 is grounded.

[0009] Preferably, the cover opening detection module includes a magnetic sensor U11, a capacitor C48 and a capacitor C49, the PE6 port of the computing and processing core is connected to the VDD port of the magnetic sensor U11 and to the GND port of the magnetic sensor U11 through the capacitor C48, the OUT port of the magnetic sensor U11 is connected to the PE7 port of the computing and processing core and is grounded through the capacitor C49.

[0010] Preferably, the alarm module includes a resistor R75, a capacitor C8, a diode D10, a diode TVS2, an alarm module P10, a magnetic bead FB1 and a magnetic bead FB2. The PE5 port of the computing processing core is connected to the first end of the magnetic bead FB1 and to the power supply through the resistor R75. The second end of the magnetic bead FB1 is connected to the anode of the diode D10. The cathode of the diode D10 is connected to the first end of the alarm module P10 and is grounded through the diode TVS2. The second end of the alarm module P10 is connected to the first end of the magnetic bead FB2. The second end of the magnetic bead FB2 is grounded and connected to the first end of the magnetic bead FB1 through the capacitor C8.

[0011] Preferably, the alarm module also includes a buzzer B1, a resistor R27, a resistor R38 and a transistor Q11. The PD0 port of the computing and processing core is connected to the base of the transistor Q11 through the resistor R38, the emitter of the transistor Q11 is grounded, the collector of the transistor Q11 is connected to the first end of the buzzer B1, and the second end of the buzzer B1 is connected to the power supply through the resistor R27.

[0012] Preferably, it also includes an infrared communication transmitting module for transmitting infrared pulse signals and an infrared communication receiving module for receiving infrared pulse signals, the infrared communication transmitting module includes resistor R3, resistor R5, resistor R15, resistor R16, resistor R19, resistor R23, resistor R25, capacitor C11, capacitor C19, transistor Q4, transistor Q7, transistor Q9, light emitting diode D5 and light emitting diode D6, the PC6 port of the computing and processing core is connected to the collector of the transistor Q4 through the resistor R25, the emitter of the transistor Q4 is connected to the power supply, the collector of the transistor Q4 is connected to the anode of the light emitting diode D5 and to the first end of the resistor R16, the PC5 port of the computing and processing core is connected to the second end of the resistor R16 and to the The resistor R3 is connected to the collector of the transistor Q9, the emitter of the transistor Q9 is connected to the cathode of the light-emitting diode D5 through the resistor R15, the collector of the transistor Q9 is grounded, the PC4 port of the computing and processing core is connected to the collector of the transistor Q7 and to the cathode of the light-emitting diode D6 through the resistor R23, the cathode of the light-emitting diode D6 is connected to the PH15 port of the computing and processing core, the anode of the light-emitting diode D6 is connected to the base of the transistor Q7 through the resistor R19, the collector of the transistor Q7 is grounded through the capacitor C19, the emitter of the transistor Q7 is grounded, the base of the transistor Q7 is connected to the emitter of the transistor Q7 through the capacitor C11, and the base of the transistor Q7 is connected to the emitter of the transistor Q7 through the resistor R5.

[0013] The beneficial technical effects of the utility model include:

[0014] 1. The utility model adopts ultrasonic wave to realize the detection and metering of gas. Through non-contact measurement, it can improve the metering accuracy and has a long service life. It can also realize a series of tasks such as the detection of the position status of the gas meter, the opening detection of the gas meter connection cover, and reminder alarm, which can effectively prevent the lawless elements from dismantling and adjusting the meter, and protect the economic interests of users and gas companies.

[0015] 2. The utility model adopts ultrasonic wave to realize the detection and measurement of gas, has the characteristics of non-contact measurement, no mechanical wear and easy installation, and high detection accuracy.

[0016] Other features and advantages of the present invention will be disclosed in detail in the following specific implementations and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] Figure 1 It is a structural schematic diagram of a security type ultrasonic gas meter;

[0019] Figure 2 This is a circuit diagram of the computing processing core;

[0020] Figure 3 This is the circuit structure diagram of the gas metering module;

[0021] Figure 4 This is the circuit structure diagram of the meter disassembly detection module;

[0022] Figure 5 This is a circuit diagram of the cover opening detection module;

[0023] Figure 6 This is the circuit structure diagram of the alarm module.

[0024] Among them: 1. computing and processing core, 2. gas metering module, 21. metering sampling circuit, 22. ultrasonic metering module, 3. meter disassembly detection module, 4. cover opening detection module, 5. alarm module. DETAILED DESCRIPTION

[0025] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0026] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0027] Embodiment 1

[0028] Please refer to the attached Figure 1The present embodiment discloses a security type ultrasonic gas meter, including a computing processing core 1 for resource allocation and data processing, a gas metering module 2 for counting gas usage, a meter removal detection module 3 for detecting the position status of the gas meter, a cover opening detection module 4 for detecting the connection status of the gas meter connection cover, and an alarm module 5 for prompting an alarm, which will be described in detail below with reference to the accompanying drawings.

[0029] Please refer to the attached Figure 2 and attached Figure 3 In this embodiment, the metering sampling circuit 21 includes a resistor R58, a resistor R59, a resistor R60, a resistor R61, a capacitor C29 and a transistor Q22. The second end of the ultrasonic metering module 22 is connected to the ground through the capacitor C29, the second end of the ultrasonic metering module 22 is connected to the base of the transistor Q22 through the resistor R61, the collector of the transistor Q22 is connected to the ground through the capacitor C29, the emitter of the transistor Q22 is connected to the power supply through the resistor R59, the PC2 port of the computing and processing core 1 is connected to the emitter of the transistor Q22 through the resistor R58, the PE6 port of the computing and processing core 1 is connected to the third end of the ultrasonic metering module 22, and the fourth section of the ultrasonic metering module 22 is connected to the PC3 port of the computing and processing core 1 through the resistor R60.

[0030] When this embodiment is working, ultrasound can be used to detect and measure gas, and it has the characteristics of non-contact measurement, no mechanical wear and easy installation, and high detection accuracy. At the same time, the method of connecting the capacitor C29 to the ground can filter out the interference of external noise on the ultrasonic signal, which can further improve the detection accuracy.

[0031] Please refer to the attached Figure 2 and attached Figure 4 In this embodiment, the meter disassembly detection module 3 includes a resistor R62 and a tilt detection switch S2, the PH15 port of the computing processing core 1 is connected to the first end of the tilt detection switch S2 and is connected to the power supply through the resistor R62, and the second end of the tilt detection switch S2 is grounded.

[0032] Please refer to the attached Figure 2 and attached Figure 5 Preferably, the cover opening detection module 4 includes a magnetic sensor U11, a capacitor C48 and a capacitor C49, the PE6 port of the computing and processing core 1 is connected to the VDD port of the magnetic sensor U11 and is connected to the GND port of the magnetic sensor U11 through the capacitor C48, the OUT port of the magnetic sensor U11 is connected to the PE7 port of the computing and processing core 1 and is grounded through the capacitor C49.

[0033] Please refer to the attached Figure 2 and attached Figure 6In a specific implementation, the alarm module 5 includes a resistor R75, a capacitor C8, a diode D10, a diode TVS2, an alarm module P10, a magnetic bead FB1 and a magnetic bead FB2. The PE5 port of the computing processing core 1 is connected to the first end of the magnetic bead FB1 and is connected to the power supply through the resistor R75. The second end of the magnetic bead FB1 is connected to the anode of the diode D10. The cathode of the diode D10 is connected to the first end of the alarm module P10 and is grounded through the diode TVS2. The second end of the alarm module P10 is connected to the first end of the magnetic bead FB2. The second end of the magnetic bead FB2 is grounded and connected to the first end of the magnetic bead FB1 through the capacitor C8.

[0034] Preferably, the alarm module 5 also includes a buzzer B1, a resistor R27, a resistor R38 and a transistor Q11, the PD0 port of the computing processing core 1 is connected to the base of the transistor Q11 through the resistor R38, the emitter of the transistor Q11 is grounded, the collector of the transistor Q11 is connected to the first end of the buzzer B1, and the second end of the buzzer B1 is connected to the power supply through the resistor R27.

[0035] When this embodiment is working, when the meter disassembly detection module 3 detects that the gas meter is tilted or the cover opening detection module 4 detects that the gas meter connection cover is pried open, it can transmit the corresponding alarm signal to the computing and processing core 1. The computing and processing core 1 sends an alarm signal to the alarm module P10 to perform corresponding reminder alarm work, and at the same time, a sound is emitted through the buzzer B1 to warn the illegal personnel and prevent them from further illegal actions.

[0036] Embodiment 2

[0037] Please refer to the attached Figure 7 This embodiment provides a security type ultrasonic gas meter. The same points as the first embodiment are not repeated here. The differences are described in detail below with reference to the accompanying drawings.

[0038] In this embodiment, an infrared communication transmitting module for transmitting infrared pulse signals and an infrared communication receiving module for receiving infrared pulse signals are also included. The infrared communication transmitting module includes resistor R3, resistor R5, resistor R15, resistor R16, resistor R19, resistor R23, resistor R25, capacitor C11, capacitor C19, transistor Q4, transistor Q7, transistor Q9, light emitting diode D5 and light emitting diode D6. The PC6 port of the computing and processing core 1 is connected to the collector of the transistor Q4 through the resistor R25, the emitter of the transistor Q4 is connected to the power supply, the collector of the transistor Q4 is connected to the anode of the light emitting diode D5 and to the first end of the resistor R16, the PC5 port of the computing and processing core 1 is connected to the second end of the resistor R16 and to the The collector of the transistor Q9 is connected through the resistor R3, the emitter of the transistor Q9 is connected to the cathode of the light-emitting diode D5 through the resistor R15, the collector of the transistor Q9 is grounded, the PC4 port of the computing and processing core 1 is connected to the collector of the transistor Q7 and to the cathode of the light-emitting diode D6 through the resistor R23, the cathode of the light-emitting diode D6 is connected to the PH15 port of the computing and processing core 1, the anode of the light-emitting diode D6 is connected to the base of the transistor Q7 through the resistor R19, the collector of the transistor Q7 is grounded through the capacitor C19, the emitter of the transistor Q7 is grounded, the base of the transistor Q7 is connected to the emitter of the transistor Q7 through the capacitor C11, and the base of the transistor Q7 is connected to the emitter of the transistor Q7 through the resistor R5.

[0039] When this embodiment is working, the parameters of the gas meter can be modified and read through infrared pulses, which is convenient for operators to maintain the gas meter without disassembling the meter and external connection ports, and has good safety.

[0040] The beneficial technical effects of this embodiment include: the utility model uses ultrasound to detect and measure gas, and through non-contact measurement, it can improve the measurement accuracy and have a long service life. It can also detect the position status of the gas meter, detect the opening of the gas meter connection cover, and provide a series of tasks such as reminders and alarms, which can effectively prevent criminals from dismantling and adjusting the meter, thereby protecting the economic interests of users and gas companies.

[0041] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Those skilled in the art should understand that the utility model includes but is not limited to the contents described in the drawings and the above specific implementation. Any modification that does not deviate from the functional and structural principles of the utility model will be included in the scope of the claims.

Claims

1. A security type ultrasonic gas meter, characterized in that: The invention comprises a computing processing core (1) for resource allocation and data processing, a gas metering module (2) for counting gas usage, a meter disassembly detection module (3) for detecting the position status of a gas meter, a cover opening detection module (4) for detecting the connection status of a gas meter connection cover, and an alarm module (5) for prompting an alarm, wherein the gas metering module (2) comprises a metering sampling circuit (21) and an ultrasonic metering module (22), the computing processing core (1) is connected to the ultrasonic metering module (22) via the metering sampling circuit (21), the signal output end of the meter disassembly detection module (3) and the signal output end of the cover opening detection module (4) are connected to the computing processing core (1), and the signal input end of the alarm module (5) is connected to the computing processing core (1).

2. A security type ultrasonic gas meter according to claim 1, characterized in that: The metering sampling circuit (21) comprises a resistor R58, a resistor R59, a resistor R60, a resistor R61, a capacitor C29 and a transistor Q22. The second end of the ultrasonic metering module (22) is connected to the ground through the capacitor C29, the second end of the ultrasonic metering module (22) is connected to the base of the transistor Q22 through the resistor R61, the collector of the transistor Q22 is connected to the ground through the capacitor C29, the emitter of the transistor Q22 is connected to the power supply through the resistor R59, the PC2 port of the computing processing core (1) is connected to the emitter of the transistor Q22 through the resistor R58, the PE6 port of the computing processing core (1) is connected to the third end of the ultrasonic metering module (22), and the fourth section of the ultrasonic metering module (22) is connected to the PC3 port of the computing processing core (1) through the resistor R60.

3. A security type ultrasonic gas meter according to claim 1, characterized in that: The meter disassembly detection module (3) comprises a resistor R62 and a tilt detection switch S2, the PH15 port of the computing processing core (1) is connected to a first end of the tilt detection switch S2 and to a power supply via the resistor R62, and the second end of the tilt detection switch S2 is grounded.

4. A security type ultrasonic gas meter according to claim 1, characterized in that: The cover opening detection module (4) comprises a magnetic sensor U11, a capacitor C48 and a capacitor C49; a PE6 port of the computing processing core (1) is connected to a VDD port of the magnetic sensor U11 and is connected to a GND port of the magnetic sensor U11 via the capacitor C48; an OUT port of the magnetic sensor U11 is connected to a PE7 port of the computing processing core (1) and is grounded via the capacitor C49.

5. A security type ultrasonic gas meter according to claim 1, characterized in that: The alarm module (5) comprises a resistor R75, a capacitor C8, a diode D10, a diode TVS2, an alarm module P10, a magnetic bead FB1 and a magnetic bead FB2. The PE5 port of the computing processing core (1) is connected to the first end of the magnetic bead FB1 and is connected to a power supply via the resistor R75. The second end of the magnetic bead FB1 is connected to the anode of the diode D10. The cathode of the diode D10 is connected to the first end of the alarm module P10 and is grounded via the diode TVS2. The second end of the alarm module P10 is connected to the first end of the magnetic bead FB2. The second end of the magnetic bead FB2 is grounded and connected to the first end of the magnetic bead FB1 via the capacitor C8.

6. A security type ultrasonic gas meter according to claim 1, characterized in that: The alarm module (5) further comprises a buzzer B1, a resistor R27, a resistor R38 and a transistor Q11, the PD0 port of the computing processing core (1) is connected to the base of the transistor Q11 via the resistor R38, the emitter of the transistor Q11 is grounded, the collector of the transistor Q11 is connected to the first end of the buzzer B1, and the second end of the buzzer B1 is connected to a power supply via the resistor R27.

7. A security type ultrasonic gas meter according to claim 1, characterized in that: The computer system also includes an infrared communication transmitting module for transmitting infrared pulse signals and an infrared communication receiving module for receiving infrared pulse signals. The infrared communication transmitting module includes a resistor R3, a resistor R5, a resistor R15, a resistor R16, a resistor R19, a resistor R23, a resistor R25, a capacitor C11, a capacitor C19, a transistor Q4, a transistor Q7, a transistor Q9, a light emitting diode D5 and a light emitting diode D6. The PC6 port of the computing processing core (1) is connected to the collector of the transistor Q4 through the resistor R25, the emitter of the transistor Q4 is connected to a power supply, the collector of the transistor Q4 is connected to the anode of the light emitting diode D5 and to the first end of the resistor R16, the PC5 port of the computing processing core (1) is connected to the second end of the resistor R16 and to the emitter of the transistor Q4 through the resistor R25. R3 is connected to the collector of transistor Q9, the emitter of transistor Q9 is connected to the cathode of light-emitting diode D5 through resistor R15, the collector of transistor Q9 is grounded, the PC4 port of the computing processing core (1) is connected to the collector of transistor Q7 and to the cathode of light-emitting diode D6 through resistor R23, the cathode of light-emitting diode D6 is connected to the PH15 port of the computing processing core (1), the anode of light-emitting diode D6 is connected to the base of transistor Q7 through resistor R19, the collector of transistor Q7 is grounded through capacitor C19, the emitter of transistor Q7 is grounded, the base of transistor Q7 is connected to the emitter of transistor Q7 through capacitor C11, and the base of transistor Q7 is connected to the emitter of transistor Q7 through resistor R5.

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