Alarm terminal and system for remotely monitoring leakage of gas pressure regulating box

Abstract

The utility model provides an alarm terminal and system for remotely monitoring leakage of a fuel gas pressure regulating box, which relates to the technical field of monitoring of the fuel gas pressure regulating box and comprises a terminal shell, a monitor mainboard circuit, a lithium-thionyl chloride battery pack, a flexible NB-IoT antenna and a catalytic combustion type combustible gas probe. The catalytic combustion type combustible gas probe is used for collecting concentration information of combustible gas in the fuel gas pressure regulating box, and the concentration information is transmitted to the microprocessor and wirelessly transmitted to the Internet of Things service platform through the NB-IoT communication module and the NB-IoT antenna. Whether gas leakage exists in the gas pressure regulating box or not is monitored with low cost, low energy consumption and high precision. The system is supported by the information technology and the communication technology, the urban operation efficiency is improved through a scientific information processing strategy, the public service level is improved, leakage monitoring of the gas pressure regulating box can be well combined with smart city construction, a solution is provided, and the popularization value is large.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas pressure regulating tank monitoring, especially to a remote monitoring gas pressure regulating tank leakage alarm terminal and system. BACKGROUND

[0002] The gas pressure regulating tank is an important component in the gas transmission and distribution system, equipped with inlet and outlet pipeline valves, filters, pressure regulators and corresponding measuring instruments. The pipeline interface and valves are relatively more, so the leakage risk is also increased. Checking the gas pressure regulating tank has become an important content of routine inspection for maintenance personnel, but manual inspection not only has high operating cost, but also is difficult to quickly and timely find gas leakage problems. UTILITY MODEL CONTENT

[0003] The utility model solves the technical problem that the prior art has the deficiencies, provides a remote monitoring gas pressure regulating tank leakage alarm terminal and system, which realizes monitoring whether the gas pressure regulating tank has gas leakage at low cost, low energy consumption and high precision.

[0004] The utility model is implemented through the following technical solutions:

[0005] A remote monitoring gas pressure regulating tank leakage alarm terminal, comprising a terminal shell, a monitor mainboard circuit, a lithium sub-battery pack, a flexible NB-IoT antenna and a catalytic combustion type combustible gas probe, the monitor mainboard circuit, the lithium sub-battery pack and the NB-IoT antenna are arranged in the terminal shell, the sensing end of the catalytic combustion type combustible gas probe is arranged outside the terminal shell and inserted into the gas pressure regulating tank, the detection signal output end of the catalytic combustion type combustible gas probe is electrically connected with the monitor mainboard circuit, and wherein

[0006] The catalytic combustion type combustible gas probe is used for monitoring the concentration of combustible gas in the gas pressure regulating tank and conveying the concentration information to the monitor mainboard circuit.

[0007] The lithium sub-battery pack is electrically connected with the monitor mainboard circuit and the catalytic combustion type combustible gas probe, and the lithium sub-battery pack is used as a functional module.

[0008] The monitor mainboard circuit is used for receiving the concentration information collected by the catalytic combustion type combustible gas probe and modulating the concentration information.

[0009] The signal input end of the NB-IoT antenna is electrically connected with the signal output end of the monitor mainboard circuit, and the NB-IoT antenna is used for sending the concentration information modulated by the monitor mainboard circuit to a base station and an internet of things service platform.

[0010] According to the technical scheme, preferably, the monitor mainboard circuit comprises an analog amplification circuit of the output voltage of the catalytic combustion type combustible gas probe, an NB-IoT communication module, an on-board temperature sensor, a probe power supply control circuit and a microprocessor, wherein;

[0011] The on-board temperature sensor is electrically connected with the microprocessor, and is used to collect mainboard environment temperature information and transmit the mainboard environment temperature information to the microprocessor;

[0012] The microprocessor is electrically connected with the NB-IoT communication module, and is used to preliminarily analyze the combustible gas concentration information and the mainboard environment temperature information and transmit the combustible gas concentration information and the mainboard environment temperature information to the NB-IoT communication module;

[0013] The NB-IoT communication module is connected with an NB-IoT antenna, and is used to modulate and transmit the combustible gas concentration information and the mainboard environment temperature information to a base station and an Internet of Things service platform through the NB-IoT antenna.

[0014] According to the technical scheme, preferably, the microprocessor is a low-power MCU single-chip microcomputer.

[0015] According to the technical scheme, preferably, the lithium sub-battery comprises a lithium sub-battery and a power supply capacitor connected in parallel, the power supply capacitor outputs a pulse current, and the lithium sub-battery is used to charge the power supply capacitor.

[0016] According to the technical scheme, preferably, the NB-IoT antenna is installed outside the pressure regulating box through a conversion line.

[0017] The utility model discloses a kind of remote monitoring gas pressure regulating box leakage alarm systems, characterized in that, including the remote monitoring gas pressure regulating box leakage alarm terminal described above, further include base station and Internet of Things service platform, and remote monitoring gas pressure regulating box leakage alarm terminal is sent to Internet of Things service platform and application server by base station with the concentration information of combustible gas after modulation and mainboard environment temperature information.

[0018] The utility model has the advantages that:

[0019] (1) the catalytic combustion type combustible gas probe of the utility model is used to collect the concentration information of combustible gas in gas pressure regulating box, and the concentration information is transmitted to microprocessor, and is wirelessly transmitted to Internet of Things service platform by NB-IoT communication module and NB-IoT antenna, to realize whether gas pressure regulating box exists gas leakage with lower cost, low energy consumption and high precision monitoring;

[0020] (2) The utility model discloses with information technology and communication technology as the support, improves the city operation efficiency through scientific information processing strategy, improves public service level, with the arrival of information society, wisdom city has become the new direction of city planning, and our daily work data also need to be synchronized to the database cooperation platform and carry out overall management, and the leakage monitoring of gas pressure regulating tank can be combined with wisdom city construction well, and the solution is provided. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 The structure schematic diagram according to the embodiment of the utility model is shown;

[0022] Fig. 2 The pin connection schematic diagram of monitor mainboard circuit in the embodiment according to the utility model is shown;

[0023] BRIEF DESCRIPTION OF DRAWINGS

[0024] 1, terminal casing;2, monitor mainboard circuit;3, lithium sub battery pack;4, NB-IoT antenna;5, catalytic combustion type combustible gas probe;6, analog amplification circuit;7, NB-IoT communication module;8, on-board temperature sensor;9, probe power control circuit;10, microprocessor. DETAILED DESCRIPTION

[0025] In order to make the person skilled in the art better understand the technical scheme of the utility model, the utility model is further explained in detail below in combination with the drawings and the best embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0026] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as the limitation to the utility model that the indicated device or element must have the specific orientation, be constructed and operated in the specific orientation, therefore, cannot be understood as the limitation to the utility model.

[0027] Embodiment 1

[0028] As Figs. 1-2As shown, the present embodiment provides a remote monitoring gas regulator leakage alarm terminal, which comprises a terminal shell 1, a monitor mainboard circuit 2, a lithium sub-battery group 3, a flexible NB-IoT antenna 4 and a catalytic combustion type combustible gas probe 5. The monitor mainboard circuit 2, the lithium sub-battery group 3 and the NB-IoT antenna 4 are arranged in the terminal shell 1, the sensing end of the catalytic combustion type combustible gas probe 5 is arranged outside the terminal shell 1 and inserted into the gas regulator, the detection signal output end of the catalytic combustion type combustible gas probe 5 is electrically connected with the gas probe interface of the monitor mainboard circuit 2, wherein

[0029] The catalytic combustion type combustible gas probe 5 is used for monitoring the concentration of combustible gas in the gas regulator and transmitting the concentration information to the monitor mainboard circuit 2. The catalytic combustion type combustible gas probe 5 can detect 100% LEL (lower explosive limit) CH4, has the characteristics of high precision, excellent durability and stability, fast response and linear output, and the working voltage is 1.8V, the power consumption during working is 324mW, the detection range of the measured concentration is 0~100% LEL, and it is very suitable for the application of smart city related equipment powered by lithium batteries.

[0030] The lithium sub-battery group 3 is electrically connected with the monitor mainboard circuit 2 and the catalytic combustion type combustible gas probe 5, and the lithium sub-battery group 3 is used as a functional module.

[0031] The monitor mainboard circuit 2 is used for receiving the concentration information collected by the catalytic combustion type combustible gas probe and modulating the concentration information.

[0032] The signal input end of the NB-IoT antenna 4 is electrically connected with the signal output end of the monitor mainboard circuit 2, and the NB-IoT antenna 4 is used for sending the modulated concentration information of the monitor mainboard circuit 2 to the base station and the Internet of Things service platform.

[0033] The monitor mainboard circuit 2 comprises an analog amplification circuit 6 of the output voltage of the catalytic combustion type combustible gas probe 5, an NB-IoT communication module 7, an on-board temperature sensor 8, a probe power supply control circuit 9 and a microprocessor 10, wherein

[0034] The on-board temperature sensor 8 is electrically connected with the microprocessor 10, and the on-board temperature sensor 8 is used for collecting the mainboard environment temperature information and transmitting the mainboard environment temperature information to the microprocessor 10.

[0035] The microprocessor 10 is electrically connected with the NB-IoT communication module 7, and is used for preliminarily analyzing the concentration information of the combustible gas and the mainboard environment temperature information and transmitting the concentration information and the mainboard environment temperature information to the NB-IoT communication module 7.

[0036] The NB-IoT communication module 7 is connected with the NB-IoT antenna 4, and is used for modulating and transmitting the combustible gas concentration information and the mainboard environment temperature information to a base station and an Internet of Things service platform through the NB-IoT antenna 4.

[0037] Working process:

[0038] The catalytic combustion type combustible gas probe 5 is used for collecting the concentration information of the combustible gas in the gas pressure regulating box, and the concentration information is transmitted to the microprocessor 10 and wirelessly transmitted to the Internet of Things service platform through the NB-IoT communication module 7 and the NB-IoT antenna 4, so that whether the gas pressure regulating box leaks is monitored at low cost, low energy consumption and high precision.

[0039] The utility model takes information technology and communication technology as the support, improves city operation efficiency through scientific information processing strategy, improves public service level, along with the advent of information society, wisdom city has become the new direction of city planning, and our daily work data also needs to be synchronized to the database to cooperate with the platform for overall management, and the leakage monitoring of the gas pressure regulating box can be well combined with the wisdom city construction to provide a solution.

[0040] Optionally, in a possible implementation, the microprocessor 10 is a low-power MCU single-chip microcomputer, and the specific model can adopt an STM32L151RCT6 single-chip microcomputer; the single-chip microcomputer is configured in a STOP mode when idle, all clocks except LSI and LSE are turned off, and at this time, the static current of the single-chip microcomputer is only in the order of uA; the single-chip microcomputer communicates with a low-power NB-IoT communication module BC260Y-CN through a UART interface, uses an AT command set to control the networking configuration and information sending and receiving of the NB-IoT communication module; the single-chip microcomputer accesses a board-mounted temperature sensor 8 TMP102 on the circuit board through an IIC interface, so as to obtain the temperature of the environment where the monitoring terminal is located; the probe power supply control circuit 9 converts the 3.6V power supply input by the lithium battery into a 2.6V power supply through an SGM6013, part of the power supply is supplied to the analog amplification circuit 6, another part of the 2.6V power supply is converted into a 1.8V power supply through an SGM2019, and then the 1.8V power supply is supplied to the power supply of the catalytic combustion type combustible gas probe 5; the SGM6013 itself has an enable pin, and the single-chip microcomputer can control the high and low potentials of the pin to control the on-off of the power supply; the analog amplification circuit 6 samples and digitizes the analog signal output by the gas probe through an ADS1114, the single-chip microcomputer obtains the differential sampling value through an IIC signal, and sends the sampling value to the base station; the specific sampling interval can be changed through a command issued by the platform.

[0041] Optionally, in one possible implementation, the lithium-ion battery pack 3 includes lithium-ion batteries and a power supply capacitor connected in parallel. The power supply capacitor outputs a pulse current, and the lithium-ion batteries are used to charge the power supply capacitor, thereby enabling the lithium-ion battery pack 3 to output a stable 3.6V standard voltage. The four batteries connected in parallel provide a large capacity of energy storage, which can maintain significant stability throughout the entire service life. The lithium-ion battery pack 3 is connected to the power input terminal of the monitor motherboard circuit 2 via wires. The lithium-ion battery pack 3 uses clean and environmentally friendly materials, which facilitates the disposal of used batteries later.

[0042] Optionally, in one possible implementation, the NB-IoT antenna 4 is modified to be an external rod antenna and mounted to the outside of the voltage regulating box via an adapter cable.

[0043] Example 2

[0044] This embodiment also discloses a remote monitoring gas pressure regulating box leakage alarm system, characterized in that it includes the aforementioned remote monitoring gas pressure regulating box leakage alarm terminal, as well as a base station and an Internet of Things (IoT) service platform. The remote monitoring gas pressure regulating box leakage alarm terminal transmits the modulated combustible gas concentration information and motherboard ambient temperature information to the IoT service platform and application server via the base station.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A remote monitoring and alarm terminal for gas pressure regulating boxes, characterized in that, The device includes a terminal housing, a monitor motherboard circuit, a lithium-ion battery pack, a flexible NB-IoT antenna, and a catalytic combustion combustible gas probe. The monitor motherboard circuit, lithium-ion battery pack, and NB-IoT antenna are installed inside the terminal housing. The sensing end of the catalytic combustion combustible gas probe is installed outside the terminal housing and inserted into a gas pressure regulating box. The detection signal output end of the catalytic combustion combustible gas probe is electrically connected to the monitor motherboard circuit. The catalytic combustion combustible gas probe is used to monitor the concentration of combustible gas in the gas pressure regulating box and transmit the concentration information to the main board circuit of the monitor. The lithium-ion battery pack is electrically connected to the monitor's main board circuit and the catalytic combustion combustible gas probe, and the lithium-ion battery pack is used as a functional module. The mainboard circuit of the monitor is used to receive and modulate the concentration information collected by the combustible gas probe. The signal input terminal of the NB-IoT antenna is electrically connected to the signal output terminal of the monitor motherboard circuit. The NB-IoT antenna is used to send the concentration information modulated by the monitor motherboard circuit to the base station and the Internet of Things service platform.

2. The remote monitoring gas pressure regulating box leakage alarm terminal according to claim 1, characterized in that, The monitor's mainboard circuit includes an analog amplifier circuit for the output voltage of the catalytic combustion combustible gas probe, an NB-IoT communication module, an onboard temperature sensor, a probe power control circuit, and a microprocessor. The onboard temperature sensor is electrically connected to the microprocessor. The onboard temperature sensor is used to collect the ambient temperature information of the motherboard and transmit the ambient temperature information of the motherboard to the microprocessor. The microprocessor is electrically connected to the NB-IoT communication module and is used to preliminarily analyze the concentration information of combustible gas and the ambient temperature information of the motherboard and transmit them to the NB-IoT communication module. The NB-IoT communication module is connected to the NB-IoT antenna and is used to modulate the concentration information of combustible gas and the ambient temperature information of the motherboard and then send them to the base station and the Internet of Things service platform via the NB-IoT antenna. The probe power control circuit is used to turn the catalytic combustion combustible gas probe on and off.

3. The remote monitoring gas pressure regulating box leakage alarm terminal according to claim 2, characterized in that, The microprocessor is a low-power MCU (Microcontroller Unit).

4. The remote monitoring gas pressure regulating box leakage alarm terminal according to claim 1, characterized in that, The lithium-ion battery pack includes lithium-ion batteries and a power supply capacitor connected in parallel. The power supply capacitor outputs a pulse current, and the lithium-ion batteries are used to charge the power supply capacitor.

5. A remote monitoring gas pressure regulating box leakage alarm terminal according to claim 1, characterized in that, The NB-IoT antenna was modified into an external rod antenna and installed outside the voltage regulating box via an adapter cable.

6. A remote monitoring and alarm system for gas pressure regulating boxes, characterized in that, The remote monitoring gas pressure regulating box leakage alarm terminal, as described in any one of claims 1-5, further includes a base station and an Internet of Things (IoT) service platform. The remote monitoring gas pressure regulating box leakage alarm terminal transmits the modulated combustible gas concentration information and the motherboard ambient temperature information to the IoT service platform and application server via the base station.

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