A networking type commercial gas detector

Abstract

The utility model relates to the technical field of gas detection, especially to a networking type industrial and commercial gas detector, it includes control module, wireless transmission module and signal detection module, the wireless transmission module has integrated LoRa communication unit and CAT.1 communication unit, signal detection module electric connection control module for detecting wireless signal strength, control module electric connection wireless transmission module for according to signal detection module detected wireless signal strength optional enable LoRa communication unit or CAT.1 communication unit carries out data transmission, the utility model integrates LoRa and CAT.1 double communication unit, and can be based on real -time signal strength and carry out the intelligent switching of communication unit, effectively solved the single wireless communication mode unreliable problem under the complex industrial environment, the utility model can ensure that gas concentration alarm and equipment state data can be transmitted to the monitoring platform in real time, reliably, greatly promoted the timeliness and reliability of safety monitoring.

Description

Technical Field

[0001] This utility model relates to the technical field of gas detection, and in particular to a networked industrial and commercial gas detector. Background Technology

[0002] In the field of industrial gas detection, especially in high-risk industries such as petrochemicals, metallurgy, and coking, continuous and reliable monitoring of flammable and toxic gases is crucial for ensuring production safety and personnel health. Traditional fixed gas detectors rely on wired power supply and signal transmission, which suffers from complex wiring, high costs, and susceptibility to electromagnetic interference. While portable detectors are easy to move, they cannot achieve unattended, 24 / 7 monitoring or remote real-time data transmission, making it difficult to meet the intelligent and networked safety management needs of modern industries.

[0003] A search revealed Chinese Patent Publication No. CN105588917A, which discloses an explosion-proof industrial gas detector. This detector utilizes a power supply combining solar cells and rechargeable batteries, and integrates a wireless communication module, enabling mobile monitoring without wiring or wired power supply. This addresses power supply challenges in remote areas or mobile work scenarios to some extent. The detector also features a low-power, timed detection mode and an overall explosion-proof design, making it suitable for unattended operation.

[0004] The aforementioned technologies have the following drawbacks: their wireless communication modules only support a single NB-IoT standard and cannot dynamically switch between long-distance coverage and strong anti-interference capabilities according to the complex and ever-changing signal environment on site. For example, in large petrochemical plants, there are open areas that require long-distance transmission to the monitoring center, as well as complex environments such as pump areas and tank areas where signals are shielded by large equipment or subject to strong electromagnetic interference. In areas with weak signals, the single communication mode is prone to unstable connections, data packet loss, or transmission delays, which prevents the monitoring platform from receiving alarm information in real time. Especially in the event of a sudden leak, such communication delays may directly delay safety warnings and emergency responses, causing serious safety hazards. Summary of the Invention

[0005] In order to ensure that gas concentration alarms and equipment status data can be transmitted to the monitoring platform in real time and reliably, so as to improve the timeliness and reliability of safety monitoring, this utility model provides a networked industrial and commercial gas detector.

[0006] The present invention provides a networked industrial and commercial gas detector, which adopts the following technical solution: A networked industrial and commercial gas detector includes a control module, a wireless transmission module and a signal detection module; The wireless transmission module integrates a LoRa communication unit and a CAT.1 communication unit; The signal detection module is electrically connected to the control module and is used to detect the wireless signal strength; The control module is electrically connected to the wireless transmission module and is used to selectively enable the LoRa communication unit or the CAT.1 communication unit for data transmission based on the wireless signal strength detected by the signal detection module.

[0007] Optionally, the control module is configured to enable the CAT.1 communication unit when the wireless signal strength is higher than the signal strength threshold, and switch to the LoRa communication unit when the wireless signal strength is lower than the signal strength threshold.

[0008] Optionally, a sensor module is also included, which is electrically connected to the control module and is used to detect gas concentration. The control module is configured to control the wireless transmission module to enter a low-power sleep mode when the sensor module detects that the gas concentration is within a safe range; and to activate the wireless transmission module when the concentration exceeds the limit or the equipment malfunctions, so that it uploads a data packet containing real-time concentration value, alarm type, equipment status and timestamp to the cloud platform.

[0009] Optionally, the control module is configured to use the LoRa communication unit for periodic low-power data upload when the gas concentration is within a safe range, and to activate the CAT.1 communication unit for real-time high-speed data transmission when the concentration exceeds the limit or the equipment malfunctions.

[0010] Optionally, the wireless transmission module is configured to receive remote commands from the cloud platform, and the control module forcibly switches to use a specified communication unit according to the remote commands.

[0011] Optionally, a status indicator module is also included, which is electrically connected to the control module and includes indicator lights of various colors. The control module controls the display mode of the corresponding indicator lights according to different working states of the system.

[0012] Optionally, the various indicator lights of different colors include a green indicator light, a yellow indicator light, and a red indicator light; the control module is configured to control the green indicator light to flash periodically when the gas concentration is within a safe range, control the yellow indicator light to remain on when the equipment malfunctions, and control the red indicator light to illuminate when the concentration exceeds the limit.

[0013] Optionally, an alarm module is also included, which is electrically connected to the control module; the control module is configured to control the alarm module to issue different audible and visual alarm signals when the equipment malfunctions, when the gas concentration exceeds a first concentration threshold, and when the gas concentration exceeds a second concentration threshold.

[0014] Optionally, it also includes a power module, which is connected to the control module, the wireless transmission module, and the signal detection module and supplies power to the above modules; the power module is an intrinsically safe circuit, which includes an electrically connected battery unit, a reverse connection protection unit, an overvoltage protection unit, and an overcurrent protection unit.

[0015] Optionally, the sensor module adopts a pluggable modular structure.

[0016] In summary, this utility model has the following beneficial technical effects: 1. This utility model integrates LoRa and CAT.1 dual communication units and can intelligently switch communication modes based on real-time wireless signal strength. It effectively solves the problems of unstable transmission, data packet loss or delay caused by signal fluctuations, equipment shielding or electromagnetic interference in complex industrial environments, and significantly improves the real-time performance and reliability of gas concentration alarm and equipment status data upload. 2. This utility model adopts battery power supply and combined with intrinsically safe power circuit design, which not only ensures the purity and stability of power output and effectively suppresses electromagnetic interference in industrial sites, but also greatly improves the safety of the system in harsh environments such as flammable and explosive environments. At the same time, no external power cord is required, which greatly reduces the difficulty of construction and maintenance costs. 3. This utility model controls the switching of the communication unit in coordination with the gas concentration value. When the gas concentration is safe, the LoRa communication unit is used to periodically upload low-power data and put the wireless module into sleep mode. When the gas concentration exceeds the limit or there is a fault, the CAT.1 communication unit is immediately activated to upload high-speed data, so that the standby time of the whole machine can be up to more than 2 years. At the same time, the real-time data transmission under critical conditions is ensured, and the system power consumption and response efficiency are comprehensively optimized. 4. This utility model has the ability to receive and execute remote commands from the cloud platform. Users can remotely force switch designated communication units according to actual network conditions or management needs, which enhances the flexibility of system management and adaptability to complex working conditions. 5. This utility model, through the coordinated operation of the status indication module and the alarm module, and by combining different sounds and different lights, significantly enhances the recognizability and urgency of alarm information, enabling on-site personnel to quickly determine the danger level and take corresponding measures based on different sound and light signals. This greatly improves the accuracy and timeliness of emergency response, while effectively avoiding misjudgments or negligence that may be caused by a single alarm method. Attached Figure Description

[0017] Figure 1 This is a diagram showing the composition of the detector in an embodiment of this utility model; Figure 2 This is a circuit diagram of the LoRa communication unit according to an embodiment of this utility model; Figure 3This is a circuit diagram of the CAT.1 communication unit of this utility model embodiment; Figure 4 This is a circuit diagram of the status indication module according to an embodiment of the present invention; Figure 5 This is a circuit diagram of the alarm module according to an embodiment of this utility model; Figure 6 This is a circuit diagram of the power module according to an embodiment of this utility model; Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1 The present invention will be described in further detail below.

[0019] This utility model discloses a networked industrial and commercial gas detector. For example... Figure 1 As shown, a networked industrial and commercial gas detector includes a control module, a wireless transmission module, a signal detection module, a sensor module, an alarm module, a status indication module, and a power supply module. The wireless transmission module, signal detection module, sensor module, status indication module, and alarm module are all electrically connected to the control module. The power supply module is connected to the wireless transmission module, signal detection module, sensor module, alarm module, status indication module, and control module and supplies power to the above modules.

[0020] like Figures 1 to 3 As shown, the wireless transmission module integrates a LoRa communication unit and a CAT.1 communication unit; the signal detection module detects the surrounding wireless signal strength in real time and transmits the signal strength data to the control module; the control module uses a microprocessor or microcontroller as the main hardware foundation and is responsible for coordinating and managing the operation of the entire system. The control module intelligently selects to enable the LoRa communication unit or the CAT.1 communication unit for data transmission based on the received wireless signal strength data.

[0021] Specifically, when the detected wireless signal strength is higher than -95dBm, the control module will prioritize the use of the CAT.1 communication unit to fully utilize its high-speed data transmission advantage, enabling the monitoring data to be efficiently uploaded to the cloud platform in real time. When the wireless signal strength is lower than -95dBm, the control module will switch to the LoRa communication unit, which, with its strong penetration capability and anti-interference characteristics, can maintain the stability of the communication link and avoid data interruption in complex industrial environments.

[0022] By dynamically switching communication units based on wireless signal strength, the unreliable transmission issues caused by signal fluctuations, equipment shielding, or electromagnetic interference in large factories are effectively overcome, significantly improving the real-time performance and accuracy of gas concentration alarm information and equipment status data uploads. Simultaneously, the collaboration of dual communication units (CAT.1 and LoRa) not only meets long-distance communication needs but also enhances adaptability and reliability in harsh local environments, thereby greatly improving the detector's overall performance and operational stability in diverse industrial scenarios. Furthermore, the wireless transmission module eliminates the need for signal connection cables, reducing construction difficulty and maintenance costs, and preventing false alarms caused by excessively long signal transmission distances or harsh environments.

[0023] It is worth noting that the wireless transmission module has good scalability and substitutability, and can be replaced by modules such as 5G RedCap, Zigbee 3.0, WiFi or Bluetooth according to the specific communication needs of different application scenarios. For example, the LoRa communication unit is suitable for short-range communication, gas stations, and scenarios with good signal strength where there are nearby base stations, while the CAT.1 communication unit is suitable for long-range communication, complex environments, and situations with strong interference. Combining the two can perfectly accommodate both short-range and long-range communication, while also solving the problem of signal interference caused by harsh on-site environments. A 5G RedCap module can be used in situations requiring ultra-low latency and ultra-high bandwidth. A Zigbee 3.0 module can be selected when building a low-cost, low-power local sensing network. In areas with existing WiFi infrastructure coverage, a WiFi module can be switched to facilitate access to the local area network. A Bluetooth module can be used when short-range, fast data interaction with on-site mobile devices is required. The flexible modular design of this invention allows users to select the most suitable wireless communication solution based on the network conditions, communication distance, data rate, and power consumption requirements of the actual deployment environment. This not only significantly enhances the adaptability of the detector in different application scenarios but also effectively optimizes system construction costs and long-term operation and maintenance efficiency.

[0024] The sensor module contains sensing elements capable of detecting various industrial gases, including combustible gas sensors, toxic and hazardous gas sensors, and other specific industrial gas sensors. The sensor module detects ambient gas concentrations in real time and transmits the concentration data to the control module. The control module compares the received gas concentration value with a preset safe concentration threshold. When the gas concentration is within a safe range, the control module puts the wireless transmission module into a low-power sleep mode to save energy and preferentially uses the LoRa communication unit for periodic low-power data uploads. When the gas concentration exceeds the safe threshold or the device malfunctions, the control module immediately activates the wireless transmission module and switches to the CAT.1 communication unit for high-speed data transmission, uploading a complete data packet containing real-time concentration values, alarm types, device status, and timestamps to the cloud platform. Operators can view or review information such as concentration and device status in the tested environment in real time through the cloud platform. In case of dangerous situations, they can obtain information promptly and take appropriate measures, thus providing significant safety assurance for operators.

[0025] By coordinating gas concentrations to achieve dynamic switching of communication units, the power consumption of the equipment under normal monitoring conditions is significantly reduced, allowing the power module to provide power for more than 2 years. It also ensures the real-time and reliable data upload under critical conditions such as alarms or faults, thereby comprehensively improving the response capability and operating efficiency of the monitoring system.

[0026] The wireless transmission module is capable of receiving remote commands from the cloud platform. Upon receiving the command, the control module will force a switch and use the designated communication unit for data transmission based on the command content. For example, when monitoring personnel determine through the cloud platform that the current environment is suitable for a specific communication mode or requires remote debugging, they can issue a command to force the detector to activate the CAT.1 or LoRa communication unit. This synergy between forced command transmission and dynamic switching enhances the system's management flexibility and adaptability to complex operating conditions, allowing users to proactively intervene in communication strategies based on actual network conditions or management needs.

[0027] like Figure 1 and Figure 4As shown, the status indicator module includes multiple LED indicators of different colors: green, yellow, and red. The control module precisely controls the display mode of each indicator according to different system operating states. Specifically, when the gas concentration is within a safe range, the control module will drive the green indicator to flash periodically, indicating normal equipment operation; when a malfunction occurs, the control module will illuminate the yellow indicator and keep it constantly lit, indicating that maintenance is required; when the gas concentration exceeds a preset threshold, the control module will immediately illuminate the red indicator, warning of potential danger. Through the intuitive and differentiated visual signals of the multi-color indicator lights, users can quickly identify equipment status and environmental safety levels from a distance, significantly improving status identification efficiency and personnel emergency response speed.

[0028] like Figure 1 and Figure 5 As shown, the alarm module uses a high-pitched buzzer or siren. The control module can adjust the sound and light color of the alarm module via BJ-1 and BJ-2 based on the detection results of the sensor module. Specifically, when the equipment malfunctions, the control module drives the alarm module to emit specific audio-visual signals, such as a solid yellow indicator light accompanied by intermittent buzzing. When the gas concentration exceeds the first concentration threshold, the control module will control the alarm module to activate the first-level alarm, causing the red indicator light to flash and emitting a periodic siren. The first concentration threshold is 15% LEL. When the gas concentration further increases and exceeds the second concentration threshold, the control module immediately upgrades the alarm to the second level, causing the red indicator light to flash at a high frequency or remain solid, while triggering a more rapid and loud continuous alarm sound. The second concentration threshold is 25% LEL. By combining different sounds and different lights, the recognizability and urgency of the alarm information are significantly enhanced, enabling on-site personnel to quickly determine the danger level and take corresponding measures based on different audio-visual signals. This greatly improves the accuracy and timeliness of emergency response, while effectively avoiding misjudgments or negligence that may be caused by a single alarm method.

[0029] like Figure 1 and Figure 5As shown, the power module adopts an intrinsically safe circuit design, which includes electrically connected battery cells, reverse connection protection units, overvoltage protection units, and overcurrent protection units. The battery cells, as the system's energy source, typically use lithium thionyl chloride batteries or lithium manganese batteries, which have high energy density and long lifespan characteristics, thus providing a stable power supply to the detector's various modules. The reverse connection protection unit is implemented through diode or MOSFET circuits to ensure correct power polarity connection and prevent damage to the equipment circuitry due to incorrect power line connection. The overvoltage protection unit uses a voltage monitoring integrated circuit and transient voltage suppression devices to monitor the input voltage in real time. When the voltage exceeds the set safe range, the overvoltage protection unit will immediately activate to suppress abnormal high voltage, preventing damage to subsequent circuits. The overcurrent protection unit includes a current sensing resistor and a fuse to continuously monitor the operating current. When the current exceeds the rated threshold, the overcurrent protection unit will quickly cut off the power supply to prevent danger caused by short circuits or overloads. Through the coordination of protection units at all levels, a multi-layered safety protection mechanism is formed, which not only ensures stable and pure power output and effectively suppresses the impact of common electromagnetic interference in industrial sites on detection accuracy, but also greatly improves the safety and reliability of the system in harsh environments such as flammable and explosive environments. At the same time, the intrinsically safe design significantly reduces the risk of the power module itself becoming an ignition source and extends the service life of the equipment.

[0030] The sensor module adopts a pluggable modular structure. Specifically, the sensor module connects to the control module through standardized electrical and mechanical interfaces, ensuring plug-and-play functionality and reliable connection. Replacement can be completed without professional tools or complex debugging. This structure allows users to quickly replace different sensor modules according to actual detection needs, significantly improving the applicability and flexibility of the detector. It enables it to quickly adapt to the detection needs of different industrial scenarios and gas types, such as petrochemicals, metallurgy, and wastewater treatment. At the same time, it greatly reduces the cost and time of later maintenance, calibration, and upgrades, and effectively reduces equipment downtime caused by sensor damage or the need to change the type of gas to be detected.

[0031] The implementation principle of a networked industrial and commercial gas detector according to this embodiment is as follows: This invention integrates LoRa and CAT.1 dual communication units and relies on a signal detection module to monitor the wireless signal strength in real time. The control module intelligently selects the best communication method for data transmission. At the same time, the system dynamically adjusts the communication strategy according to the gas concentration status. Combined with intrinsically safe battery power supply design, pluggable sensor module structure, multi-level audible and visual alarm indication, and remote command control via cloud platform, this invention effectively solves the problems of difficult wiring, susceptibility to interference, and unreliability of single wireless communication in traditional wired detectors in complex industrial environments. It significantly improves the real-time performance, accuracy, and system security of gas concentration monitoring data transmission, while greatly reducing construction and maintenance costs, extending equipment battery life, and enhancing the system's adaptability and management flexibility to different application scenarios.

[0032] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A networked industrial and commercial gas detector, characterized in that: It includes a control module, a wireless transmission module, and a signal detection module; The wireless transmission module integrates a LoRa communication unit and a CAT.1 communication unit; The signal detection module is electrically connected to the control module and is used to detect the wireless signal strength; The control module is electrically connected to the wireless transmission module and is used to selectively enable the LoRa communication unit or the CAT.1 communication unit for data transmission based on the wireless signal strength detected by the signal detection module. The control module is configured to enable the CAT.1 communication unit when the wireless signal strength is higher than the signal strength threshold, and switch to the LoRa communication unit when the wireless signal strength is lower than the signal strength threshold. It also includes a sensor module electrically connected to the control module for detecting gas concentration; the control module is configured to control the wireless transmission module to enter a low-power sleep mode when the sensor module detects that the gas concentration is within a safe range; and to activate the wireless transmission module when the concentration exceeds the limit or the equipment malfunctions, so that it uploads a data packet containing real-time concentration value, alarm type, equipment status and timestamp to the cloud platform. The control module is configured to use the LoRa communication unit for periodic low-power data upload when the gas concentration is within a safe range, and to activate the CAT.1 communication unit for real-time high-speed data transmission when the concentration exceeds the limit or the equipment malfunctions.

2. The networked industrial and commercial gas detector according to claim 1, characterized in that: The wireless transmission module is configured to receive remote commands from the cloud platform, and the control module forces a switch to use a specified communication unit based on the remote commands.

3. The networked industrial and commercial gas detector according to claim 1, characterized in that: It also includes a status indicator module, which is electrically connected to the control module. The status indicator module contains indicator lights of various colors, and the control module controls the display mode of the corresponding indicator lights according to different working states of the system.

4. A networked industrial and commercial gas detector according to claim 3, characterized in that: The various indicator lights of different colors include a green indicator light, a yellow indicator light, and a red indicator light; the control module is configured to control the green indicator light to flash periodically when the gas concentration is within a safe range, to control the yellow indicator light to remain on when the equipment malfunctions, and to control the red indicator light to illuminate when the concentration exceeds the limit.

5. A networked industrial and commercial gas detector according to claim 1, characterized in that: It also includes an alarm module, which is electrically connected to the control module; the control module is configured to control the alarm module to issue different audible and visual alarm signals when the equipment malfunctions, when the gas concentration exceeds a first concentration threshold, and when the gas concentration exceeds a second concentration threshold.

6. A networked industrial and commercial gas detector according to claim 1, characterized in that: It also includes a power module, which is connected to the control module, the wireless transmission module, and the signal detection module and supplies power to the above modules; the power module is an intrinsically safe circuit, which includes an electrically connected battery cell, a reverse connection protection unit, an overvoltage protection unit, and an overcurrent protection unit.

7. A networked industrial and commercial gas detector according to claim 1, characterized in that: The sensor module adopts a pluggable modular structure.

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