Solar gas leakage remote intelligent monitor and detection system

Abstract

The utility model provides a solar gas leakage remote intelligent monitor and detection system, which relates to the technical field of smart cities and comprises a solar panel, a rechargeable lithium battery pack, a laser combustible gas monitoring probe, an NB-IoT antenna and a monitor mainboard. The monitor main board comprises a TTL level UART interface communicating with the laser combustible gas monitoring probe, a low-power-consumption NB-IoT communication module, a lithium battery charging circuit, an onboard temperature sensor and a low-power-consumption microcontroller with an STOP mode, the monitor main board is used for conducting signal control on all parts in the monitor, the battery pack is provided with a protection circuit, and the protection circuit is connected with the laser combustible gas monitoring probe. The NB-IoT antenna is used for signal transmission, laser is emitted through the laser light source of the laser combustible gas monitoring probe, the concentration of combustible gas is measured by measuring a spectral intensity signal obtained through gas absorption, and the laser combustible gas monitoring probe has the advantages of being high in precision, long in service life and high in market value and being not interfered by the use environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wisdom city especially, relates to a solar energy gas leakage remote intelligent monitor and detection system. BACKGROUND

[0002] For many years, the popularity of natural gas pipelines brings convenience and comfort to urban residents' daily life, but safety accidents caused by leakage of natural gas or other flammable gases also occur more and more frequently with the popularity of natural gas. Therefore, the monitoring of flammable gases is paid more attention to, and the monitoring of the flammable gas concentration of gas pipeline facilities has always been an important part of the construction of wisdom city. The traditional solution solves this problem by laying power lines and wired communication monitoring terminals.

[0003] Thanks to the development and popularity of efficient lithium batteries and low-power wireless module technology, in some cases where it is inconvenient to deploy wired power supply, low-power flammable gas monitoring equipment terminals are developed, which reduces the maintenance difficulty and failure rate of the monitoring terminal equipment. However, maintenance personnel still need to regularly inspect and maintain the monitoring terminal, such as replacing the battery.

[0004] Solar energy, as one of the important renewable energies, plays a dominant role in the future new energy development field and has great development prospects. The solar charging circuit cooperates with the rechargeable lithium battery to provide a more flexible power supply solution for unattended monitoring terminals, which further improves the convenience of terminal inspection and maintenance work and increases the inspection and maintenance cycle. UTILITY MODEL CONTENT

[0005] The utility model solves the technical problems existing in the prior art, provides a solar energy gas leakage remote intelligent monitor and detection system.

[0006] The utility model is implemented through the following technical solutions: a solar energy gas leakage remote intelligent monitor, comprising a 9V solar panel, a rechargeable lithium battery pack with charge protection, a laser flammable gas monitoring probe, an NB-IoT antenna and a monitor mainboard; the monitor mainboard comprises a TTL level UART interface in communication with the laser flammable gas monitoring probe, a low-power NB-IoT communication module, a lithium battery charging circuit, an on-board temperature sensor and a low-power microcontroller with a STOP mode;

[0007] Among them, the rechargeable lithium battery pack, the monitor mainboard and the NB-IoT antenna are installed inside the terminal casing, the solar panel and the laser flammable gas monitoring probe are installed outside the terminal casing and are connected to the inside of the terminal casing through wires;

[0008] The monitor mainboard is used for signal control of various components in the monitor, and the monitor mainboard adopts a low-power microcontroller STM32L151RCT6 as a core of logical operation;

[0009] The battery pack itself is provided with a protection circuit, and has overcharge protection, overdischarge protection and overcurrent protection functions.

[0010] The laser combustible gas monitoring probe emits laser light from a laser light source inside the probe, and measures the concentration of combustible gas by measuring the spectrum intensity signal obtained by gas absorption, wherein the measurement range of the laser combustible gas monitoring probe is 0%~100%LEL, the wide voltage input range is 3.2V~5.5V, the working current is less than 50ma, and communication is carried out through a 3V voltage TTL UART interface.

[0011] The NB-IoT antenna is a flexible antenna and can be installed inside the terminal shell, and the NB-IoT antenna is used for signal transmission and can be installed inside the terminal shell, the NB-IoT module of the monitor mainboard communicates with the base station through the antenna, and transmits collected data to the Internet of Things service platform and the application server.

[0012] The monitor mainboard can enter a STOP mode to limit the static power consumption of the microcontroller to the uA level, the microcontroller communicates with the on-board temperature sensor TMP102 through an IIC interface, and can read the ambient temperature of the mainboard, in terms of wireless communication, the microcontroller communicates with the low-power NB-IoT module HXT28-AC through a level conversion circuit through a UART interface.

[0013] The HXT28-AC module has a wide voltage input of 2.2V~4.2V, and the static current of the module after entering the PSM sleep mode is 0.9uA, meeting the requirements of lithium battery power supply as a power input;

[0014] The charging circuit part of the power supply circuit adopts the scheme of CN3791 chip, the CN3791 chip has trickle, constant current and constant voltage charging modes, and a wide input voltage range of 4.5V~28V, and the internal circuit of the chip can automatically track the maximum power point of the solar panel, effectively utilize the output power of the solar panel, and the NB-IoT module of the monitor mainboard communicates with the base station through the antenna, and transmits collected data to the Internet of Things service platform and the application server.

[0015] The solar panel provides a 9V power input, with a maximum power of 10W, and can provide a maximum current of 1A for charging the lithium battery, so as to maintain the stability of the circuit signal transmission.

[0016] The rechargeable lithium battery pack is clamped and installed in the terminal shell, and the monitor mainboard and the NB-IoT antenna are fixed in the terminal shell by screws; a clamping groove for fixing the laser combustible gas monitoring probe is formed on the terminal shell, the clamping groove is clamped and connected with the laser combustible gas monitoring probe, so that the laser combustible gas monitoring probe is clamped on the terminal shell, thereby facilitating overall carrying.

[0017] A solar energy gas leakage remote intelligent monitoring system comprises the solar energy gas leakage remote intelligent monitor, a central control base station and an Internet of Things platform.

[0018] The utility model has the advantages of:

[0019] 1. By improving the battery pack, the battery pack itself has a protection circuit, which has overcharge protection, overdischarge protection, overcurrent protection and other functions; in the case that the monitoring terminal device encounters continuous weather abnormalities or solar panel failures and cannot be charged, a backup power supply is provided for the terminal device to maintain daily gas monitoring work, which saves time for terminal maintenance personnel to troubleshoot and maintain daily, and improves the endurance of the terminal device.

[0020] 2. The laser combustible gas monitoring probe, the laser light source inside the probe emits laser light, and the concentration of combustible gas is measured by measuring the spectrum intensity signal obtained by gas absorption; the laser combustible gas monitoring probe has the characteristics of high precision, long service life and no interference from the use environment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 is the module schematic diagram of the utility model.

[0022] Fig. 2 is the electrical connection schematic diagram of the utility model.

[0023] In the figure: 9V solar panel 1, rechargeable lithium battery pack 2 with charge protection, laser combustible gas monitoring probe 3, NB-IoT antenna 4, monitor mainboard 5. DETAILED DESCRIPTION

[0024] In order to make the person skilled in the art better understand the technical scheme of the utility model, the utility model will be further described 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 creative labor belong to the scope of protection of the utility model.

[0025] Embodiment 1,

[0026] As shown in the drawingsFigs. 1-2 The embodiment shown provides a solar energy gas leakage remote intelligent monitor, which comprises a 9V solar panel 1, a rechargeable lithium battery pack 2 with charge protection, a laser combustible gas monitoring probe 3, an NB-IoT antenna 4 and a monitor mainboard 5; the monitor mainboard 5 comprises a TTL level UART interface in communication with the laser combustible gas monitoring probe 3, a low-power NB-IoT communication module, a lithium battery charging circuit, an on-board temperature sensor and a low-power microcontroller with a STOP mode.

[0027] The rechargeable lithium battery pack 2, the monitor mainboard 5 and the NB-IoT antenna 4 are installed inside the terminal casing, and the solar panel and the laser combustible gas monitoring probe are installed outside the terminal casing and connected to the inside of the terminal casing through wires.

[0028] The monitor mainboard 5 is used for signal control of each component in the monitor, and a low-power microcontroller STM32L151RCT6 is used as a core of logic operation.

[0029] The rechargeable lithium battery pack 2 with charge protection has a protection circuit, and has overcharge protection, overdischarge protection and overcurrent protection functions.

[0030] The laser combustible gas monitoring probe 3 emits laser light from a laser light source inside the probe, and measures the concentration of combustible gas by measuring the spectrum intensity signal obtained by gas absorption.

[0031] The NB-IoT antenna 4 is a flexible antenna, which can be installed inside the terminal casing, and is used for signal transmission.

[0032] The monitor mainboard 5 can enter the STOP mode to limit the static power consumption of the microcontroller to the uA level; the microcontroller communicates with the on-board temperature sensor TMP102 through an IIC interface, and can read the ambient temperature of the mainboard; in terms of wireless communication, the microcontroller communicates with the low-power NB-IoT module HXT28-AC through a level conversion circuit through a UART interface.

[0033] The HXT28-AC module has a wide voltage input of 2.2V-4.2V, and the static current of the module after entering the PSM sleep mode is 0.9uA, which meets the requirements of lithium battery power supply as a power input;

[0034] The charging circuit part of the power supply circuit adopts a scheme of a CN3791 chip, the CN3791 chip has a trickle, constant current and constant voltage charging mode, a wide input voltage range of 4.5V~28V, and the internal circuit of the chip can automatically track the maximum power point of the solar panel, and effectively utilize the output power of the solar panel; the NB-IoT module of the monitor mainboard communicates with the base station through the antenna, and transmits the collected data to the Internet of Things service platform and the application server.

[0035] The solar panel provides a 9V power input, with a maximum power of 10W, and can provide a maximum current of 1A for charging the lithium battery, thereby providing a stable voltage for the whole.

[0036] The rechargeable lithium battery pack 2 is clamped and installed in the terminal shell, and the monitor mainboard and the NB-IoT antenna are fixed in the terminal shell by screws; a clamping groove for fixing the laser combustible gas monitoring probe is formed on the terminal shell, and the clamping groove is clamped and connected with the laser combustible gas monitoring probe, so as to facilitate the fixing of the laser combustible gas monitoring probe, and facilitate the carrying of the whole.

[0037] The measurement range of the laser combustible gas monitoring probe 4 is 0%~100%LEL, the wide voltage input range is 3.2V~5.5V, the working current is less than 50ma, communication is carried out through a 3V voltage TTL UART interface, and the laser combustible gas monitoring probe 4 has the characteristics of high precision, long service life and no interference from the use environment.

[0038] Embodiment 2,

[0039] The embodiment discloses a solar gas leakage remote intelligent monitoring system, characterized in that the system comprises the solar gas leakage remote intelligent monitor, a central control base station and an Internet of Things platform, and the remote intelligent monitor transmits monitored solar gas leakage information to the Internet of Things platform through the central control base station.

[0040] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A solar energy gas leak remote intelligent monitor characterized by, The solar panel including 9V, the rechargeable lithium battery pack with charge protection, the laser combustible gas monitoring probe, the NB-IoT antenna and the monitor mainboard; the monitor mainboard includes the TTL level UART interface in communication with the laser combustible gas monitoring probe, the low-power NB-IoT communication module, the lithium battery charging circuit, the on-board temperature sensor, the low-power microcontroller with the STOP mode; Wherein, the rechargeable lithium battery pack, the monitor mainboard and the NB-IoT antenna are installed inside the terminal shell, and the solar panel and the laser combustible gas monitoring probe are installed outside the terminal shell and connected to the inside of the terminal shell through wires. The monitor mainboard is used for signal control of each component in the monitor, and a low-power microcontroller STM32L151RCT6 is used as a core of logic operation. The battery pack itself has a protection circuit, and has overcharge protection, overdischarge protection and overcurrent protection functions. The laser combustible gas monitoring probe emits laser light from the laser light source inside the probe, and measures the concentration of combustible gas by measuring the spectral intensity signal absorbed by the gas. The NB-IoT antenna is a flexible antenna and can be installed inside the terminal shell, and is used for signal transmission.

2. The solar gas leak remote intelligent monitor of claim 1, wherein, The monitor mainboard can enter the STOP mode to limit the static power consumption of the microcontroller to the uA level; the microcontroller communicates with the on-board temperature sensor TMP102 through the IIC interface and can read the ambient temperature of the mainboard; in terms of wireless communication, the microcontroller communicates with the low-power NB-IoT module HXT28-AC through the UART interface and the level conversion circuit. The HXT28-AC module has a wide voltage input of 2.2V-4.2V, and the static current after the module enters the PSM sleep mode is 0.9uA, meeting the requirements of lithium battery power supply as power input. The charging circuit part of the power supply circuit adopts the scheme of CN3791 chip, and the CN3791 chip has trickle, constant current and constant voltage charging modes, and a wide input voltage range of 4.5V-28V.

3. The solar gas leak remote intelligent monitor of claim 1, wherein, The solar panel provides 9V power input, with a power of 10W and a maximum current of 1A for charging the lithium battery.

4. The solar gas leak remote intelligent monitor of claim 1, wherein, The rechargeable lithium battery pack is clamped and installed inside the terminal shell, and the monitor mainboard and the NB-IoT antenna are fixed in the terminal shell by screws.

5. The solar gas leak remote intelligent monitor of claim 1, wherein, The measurement range of the laser combustible gas monitoring probe is 0%-100%LEL, the wide voltage input range is 3.2V-5.5V, the working current is less than 50ma, and communication is carried out through the 3V voltage TTL UART interface.

6. The solar gas leak remote intelligent monitor of claim 1, wherein, The NB-IoT module of the monitor mainboard communicates through the antenna and the base station, and transmits the collected data to the Internet of Things service platform and the application server.

7. The solar gas leak remote intelligent monitor of claim 1, wherein, A clamping groove for fixing the laser combustible gas monitoring probe is formed on the terminal shell, and the clamping groove is clamped and connected with the laser combustible gas monitoring probe.

8. A solar energy gas leakage remote intelligent monitoring system characterized in that, The solar gas leakage remote intelligent monitor comprises the solar gas leakage remote intelligent monitor, the central control base station and the Internet of Things platform. The solar gas leakage remote intelligent monitor comprises the solar gas leakage remote intelligent monitor, the central control base station and the Internet of Things platform.

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