Split type reading gas detector

Abstract

The invention provides a split type reading gas detector. The split type reading gas detector comprises a detection end host machine and a supervision end host machine, the supervision terminal machine is physically separated from the detection terminal host; the detection end host comprises at least one gas sensor, a first main control module, a first display module, a wireless communication transmitting module and a first power supply module; and the supervision terminal machine comprises a wireless communication receiving module, a second main control module, a second display module, an alarm module and a second power supply module. The detector is designed into the detection end and the supervision end which can be separated from each other, and the wireless communication technology is utilized, so that real-time synchronous display of data at a gas detection site and an external supervision site is successfully realized. An external supervisor can master the internal environment condition at any time without entering or waiting. When the internal gas concentration is abnormal, the supervision terminal machine can give an alarm immediately, external personnel can start emergency response at the first time, and the risk of safety quality accidents is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of gas detection instrument technology, and in particular to a detachable reading gas detector. Background Technology

[0002] In enclosed or semi-enclosed work environments such as industrial production, underground pipeline maintenance, storage tank repair, and tunnel construction, ambient air quality directly impacts the safety of workers and the smooth progress of work processes. Due to limited ventilation, these spaces are prone to the accumulation of flammable gases (such as methane), leaks of toxic and harmful gases (such as hydrogen sulfide and carbon monoxide), or abnormal oxygen concentrations (too high or too low). If gas concentrations exceed safety thresholds, they can not only cause explosions and poisoning accidents but also seriously threaten the health of workers. Therefore, real-time and accurate monitoring of ambient gas concentrations in these scenarios is of irreplaceable importance and is a core element in ensuring operational safety.

[0003] Currently, most mainstream gas detection devices on the market adopt an integrated design, combining the detection end for collecting ambient gas data with the display end for showing the detection results into the same device body. These integrated gas detectors are typically carried into the detection area by operators. The built-in gas sensor collects gas signals, which are then processed internally and displayed directly on the device's screen. Operators can view the screen to obtain the current ambient gas conditions. They are characterized by their high degree of integration and portability, and are widely used in simple scenarios where only one person is operating and no external supervision is required.

[0004] However, in actual confined space operations, the aforementioned integrated gas detectors have significant shortcomings, failing to meet the needs of safety supervision and efficient operation: First, they cannot achieve real-time external monitoring. When personnel enter a confined space with the detector, supervisors in the external safety area cannot obtain real-time gas concentration data. They can only rely on personnel periodically reporting via communication devices or waiting for the equipment to be retrieved and the data read after the operation, resulting in a severe information lag in external monitoring of the internal environment. Second, they pose significant safety hazards. Due to the asynchrony between internal and external information, if the gas concentration in the confined space suddenly changes drastically, [further issues may arise]. In emergencies such as a surge in toxic gas concentration due to pipeline leaks or flammable gas reaching its explosive limit, external supervisors may not be aware of the danger immediately and may find it difficult to activate emergency plans in a timely manner (such as notifying personnel to evacuate or turning on ventilation equipment), greatly increasing the risk to the lives of internal workers. Thirdly, it affects work efficiency and quality. To reduce safety risks, external supervisors may frequently request work to be interrupted due to their inability to confirm the safety of the internal environment, or testing personnel may need to frequently enter and exit confined spaces to report data. This not only disrupts the work rhythm but also causes a significant decrease in overall work efficiency due to repeated start-ups and shutdowns of the work process, making it difficult to meet the actual needs of efficient work. Summary of the Invention

[0005] This application provides a detachable gas detector to solve the problem in the prior art where, due to the lack of synchronization between internal and external information, when the gas concentration in a confined space suddenly changes, external personnel cannot be notified in time and can activate the emergency plan, which poses a serious threat to the life safety of internal workers.

[0006] This application provides a separable reading gas detector, including a detection terminal main unit and a monitoring terminal main unit; The monitoring terminal is physically separated from the detection terminal host and is used to receive and process data at a safe monitoring location. The detection terminal host is used to collect ambient gas at the gas detection location. The detection terminal host includes at least one gas sensor, a first main control module, a first display module, a wireless communication transmission module, and a first power supply module. The gas sensor is electrically connected to the first main control module, and the gas sensor is used to detect the concentration of the target gas and output an electrical signal; The first main control module is electrically connected to the first display module. The first main control module is used to receive and process the electrical signal and convert it into digital gas concentration data, and drive the first display module to display the gas concentration data locally in real time. The first main control module is also electrically connected to the wireless communication transmitting module, which is used to transmit the gas concentration data to the outside in the form of wireless signals; The first power module is used to provide operating power to each module of the detection terminal host.

[0007] In some possible implementations, the supervisory terminal includes a wireless communication receiving module, a second main control module, a second display module, an alarm module, and a second power supply module; The wireless communication receiving module is electrically connected to the second main control module. The wireless communication receiving module is used to receive wireless signals emitted by the wireless communication transmitting module of the detection terminal host and parse out the gas concentration data therein. The second main control module is electrically connected to the second display module. The second main control module is used to receive and process the parsed gas concentration data, and drive the second display module to display the gas concentration data in real time. The second main control module is also electrically connected to the alarm module. When the received gas concentration data reaches or exceeds the preset alarm threshold, it drives the alarm module to issue an audible and visual alarm signal. The second power module is used to provide operating power to each module of the supervisory terminal machine.

[0008] In some possible implementations, the alarm module includes a high-brightness LED flash and a high-decibel buzzer. Both the high-brightness LED flash and the high-decibel buzzer are electrically connected to the second main control module. When the gas concentration data exceeds the standard, the second main control module synchronously drives the high-brightness LED flash to light up and the high-decibel buzzer to sound.

[0009] In some possible implementations, the detection host also includes a data storage module, which is electrically connected to the first main control module and is used to receive and store historical gas concentration data processed by the first main control module, so as to trace and analyze historical detection data.

[0010] In some possible implementations, the gas sensor includes at least one of a catalytic combustion sensor, an electrochemical sensor, or a paramagnetic oxygen sensor; the catalytic combustion sensor is used to detect the concentration of combustible gases (such as methane), the electrochemical sensor is used to detect the concentration of toxic gases (such as hydrogen sulfide and carbon monoxide), and the paramagnetic oxygen sensor is used to detect the concentration of oxygen.

[0011] In some possible implementations, both the first main control module and the second main control module are low-power microcontrollers. The first main control module has signal filtering, signal amplification, and analog-to-digital conversion functions, used to convert the analog electrical signal output by the gas sensor into a digital signal and calculate the gas concentration value. The second main control module has data verification and decoding functions, used to verify the gas concentration data parsed by the wireless communication receiving module.

[0012] In some possible implementations, the detachable reading gas detector is configured as follows: The detection terminal host and the supervision terminal are started. The wireless communication transmitting module of the detection terminal host and the wireless communication receiving module of the supervision terminal automatically perform frequency band matching to establish a stable wireless data transmission link. The gas sensor of the detection terminal host continuously collects the ambient gas at the detection location, converts the gas concentration information into an analog electrical signal and transmits it to the first main control module. The first main control module sequentially filters, amplifies and performs analog-to-digital conversion on the analog electrical signal to obtain digitized gas concentration data, and simultaneously drives the first display module to display the gas concentration data in real time. The first main control module packages the processed gas concentration data into a data packet with a preset format and sends it outward through the wireless communication transmission module at a set transmission frequency. After receiving the data packet, the wireless communication receiving module of the monitoring terminal receives it and transmits it to the second main control module. The second main control module verifies and decodes the data packet, extracts the gas concentration data, and drives the second display module to synchronously display the gas concentration data and the data acquisition timestamp. The second main control module compares the real-time gas concentration data with the pre-stored safety thresholds for each type of gas. If the gas concentration data reaches or exceeds the corresponding threshold, the second main control module immediately drives the high-brightness LED flashlight of the alarm module to flash at a frequency of 5-10 times / second, and simultaneously controls the high-decibel buzzer to emit an intermittent alarm sound of 80-120dB. The second display module also highlights the type and concentration value of the gas exceeding the standard in bright red font.

[0013] In some possible implementations, the detachable reading gas detector is further configured as follows: During the detection process, the first main control module of the detection terminal host synchronously stores the gas concentration data and acquisition time information after each processing to the data storage module according to the set storage interval. After the detection is completed, the historical data is exported through the data export interface for subsequent detection process review and environmental safety analysis.

[0014] In some possible implementations, the gas sensor's data acquisition process further includes a zero-point calibration step: Before the detection begins, the main unit of the detection terminal is placed in a clean air environment of a preset environment. The first main control module controls the gas sensor to collect the electrical signal of the clean air and sets it as the zero reference value. In the subsequent detection process, the difference between the electrical signal collected in real time and the zero reference value is calculated to eliminate sensor drift error.

[0015] In some possible implementations, the detachable reading gas detector is further configured as follows: If the wireless communication receiving module does not receive a data packet sent by the wireless communication transmitting module for 5-10 consecutive seconds, the second main control module determines that the wireless connection is interrupted, drives the alarm module to issue an alarm signal different from the concentration exceeding the standard, and at the same time, the second display module displays a connection interruption prompt, and the first display module of the detection terminal host synchronously displays a connection abnormality, reminding the detection personnel to check the equipment location or restart the wireless module.

[0016] As described above, this application provides a detachable gas detector, including a detection terminal and a monitoring terminal. The monitoring terminal is physically separated from the detection terminal and is used to receive and process data at a safe monitoring location. The detection terminal is used to collect ambient gas at the gas detection location and includes at least one gas sensor, a first main control module, a first display module, a wireless communication transmitting module, and a first power module. The monitoring terminal includes a wireless communication receiving module, a second main control module, a second display module, an alarm module, and a second power module. By designing the detector as a detachable detection and monitoring terminal and utilizing wireless communication technology, this application successfully achieves real-time synchronous display of data at gas detection locations, such as inside enclosed spaces, and at external monitoring locations. External monitoring personnel can monitor the internal environment at any time without entering or waiting. When the internal gas concentration is abnormal, the monitoring terminal can immediately issue an alarm, allowing external personnel to initiate an emergency response immediately. This provides a crucial external safety barrier for internal workers and significantly reduces the risk of safety and quality accidents. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a detachable reading gas detector provided in an embodiment of this application. Detailed Implementation

[0019] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.

[0020] In enclosed or semi-enclosed work environments such as industrial production, underground pipeline maintenance, storage tank repair, and tunnel construction, ambient air quality directly impacts the safety of workers and the smooth progress of work processes. Due to limited ventilation, these spaces are prone to the accumulation of flammable gases (such as methane), leaks of toxic and harmful gases (such as hydrogen sulfide and carbon monoxide), or abnormal oxygen concentrations (too high or too low). If gas concentrations exceed safety thresholds, they can not only cause explosions and poisoning accidents but also seriously threaten the health of workers. Therefore, real-time and accurate monitoring of ambient gas concentrations in these scenarios is of irreplaceable importance and is a core element in ensuring operational safety.

[0021] Currently, most mainstream gas detection devices on the market adopt an integrated design, combining the detection end for collecting ambient gas data with the display end for showing the detection results into the same device body. These integrated gas detectors are typically carried into the detection area by operators. The built-in gas sensor collects gas signals, which are then processed internally and displayed directly on the device's screen. Operators can view the screen to obtain the current ambient gas conditions. They are characterized by their high degree of integration and portability, and are widely used in simple scenarios where only one person is operating and no external supervision is required.

[0022] However, in actual confined space operations, the aforementioned integrated gas detectors have significant shortcomings, failing to meet the needs of safety supervision and efficient operation: First, they cannot achieve real-time external monitoring. When personnel enter a confined space with the detector, supervisors in the external safety area cannot obtain real-time gas concentration data. They can only rely on personnel periodically reporting via communication devices or waiting for the equipment to be retrieved and the data read after the operation, resulting in a severe information lag in external monitoring of the internal environment. Second, they pose significant safety hazards. Due to the asynchrony between internal and external information, if the gas concentration in the confined space suddenly changes drastically, [further issues may arise]. In emergencies such as a surge in toxic gas concentration due to pipeline leaks or flammable gas reaching its explosive limit, external supervisors may not be aware of the danger immediately and may find it difficult to activate emergency plans in a timely manner (such as notifying personnel to evacuate or turning on ventilation equipment), greatly increasing the risk to the lives of internal workers. Thirdly, it affects work efficiency and quality. To reduce safety risks, external supervisors may frequently request work to be interrupted due to their inability to confirm the safety of the internal environment, or testing personnel may need to frequently enter and exit confined spaces to report data. This not only disrupts the work rhythm but also causes a significant decrease in overall work efficiency due to repeated start-ups and shutdowns of the work process, making it difficult to meet the actual needs of efficient work.

[0023] Based on this, this application provides a separable reading gas detector, including a detection terminal main unit and a monitoring terminal unit; The monitoring terminal is physically separated from the detection terminal host and is used to receive and process data at a safe monitoring location. The detection terminal host is used to collect ambient gas at the gas detection location. The detection terminal host includes at least one gas sensor, a first main control module, a first display module, a wireless communication transmission module, and a first power supply module. The gas sensor is electrically connected to the first main control module, and the gas sensor is used to detect the concentration of a specific gas and output an electrical signal; The first main control module is electrically connected to the first display module. The first main control module is used to receive and process the electrical signal and convert it into digital gas concentration data, and drive the first display module to display the gas concentration data locally in real time. The first main control module is also electrically connected to the wireless communication transmitting module, which is used to transmit the gas concentration data to the outside in the form of wireless signals; The first power module is used to provide operating power to each module of the detection terminal host; The monitoring terminal unit integrates a wireless communication receiving module, a second main control module, a second display module, an alarm module, and a second power supply module. The wireless communication receiving module is electrically connected to the second main control module. The wireless communication receiving module is used to receive wireless signals emitted by the wireless communication transmitting module of the detection terminal host and parse out the gas concentration data therein. The second main control module is electrically connected to the second display module. The second main control module is used to receive and process the parsed gas concentration data, and drive the second display module to display the gas concentration data in real time. The second main control module is also electrically connected to the alarm module. When the received gas concentration data reaches or exceeds the preset alarm threshold, it drives the alarm module to issue an audible and visual alarm signal. The second power module is used to provide operating power to each module of the supervisory terminal machine.

[0024] Existing integrated detectors only allow internal testing personnel to obtain data, while external supervisors are unable to respond to emergencies in a timely manner due to information lag. In this application, the main unit of the detection terminal transmits gas concentration data in real time through a wireless communication transmission module, and the monitoring terminal terminal can receive and display the data synchronously, achieving zero-delay data exchange between "internal detection" and "external supervision." At the same time, when the gas concentration exceeds the standard, the alarm module of the monitoring terminal terminal can immediately issue an audible and visual alarm, allowing external personnel to activate emergency plans immediately (such as notifying internal personnel to evacuate and turning on ventilation equipment). This creates a "double safety line" for workers in hazardous environments such as confined spaces, significantly reducing the probability of safety accidents such as toxic gas poisoning and flammable gas explosions.

[0025] Traditional integrated inspection instruments require personnel to frequently enter and exit hazardous areas to report data, or external personnel may interrupt operations due to uncertain information, severely impacting efficiency. In this application, internal inspection personnel no longer need to make repeated trips, and external supervisors can monitor the environmental safety status in real time via a monitoring terminal, eliminating the need to pause operations due to "information opacity." Simultaneously, the local display function of the inspection terminal host meets the real-time data viewing needs of internal personnel. Internal and external personnel can perform their respective duties simultaneously, avoiding process bottlenecks and significantly improving operational efficiency in scenarios such as confined space inspections and underground pipeline maintenance.

[0026] Compared to existing detectors that rely heavily on real-time viewing and lack data retention, the first main control module of the detection host in this application can process data synchronously. It can then be combined with a data storage module to store historical data. After the detection is completed, the data can be exported for review, such as analyzing gas concentration change trends and locating leakage risk points. This not only provides safety support for a single operation but also provides data basis for optimizing operation plans and predicting risks in similar scenarios in the future.

[0027] In some embodiments, the alarm module includes a high-brightness LED flash and a high-decibel buzzer. Both the high-brightness LED flash and the high-decibel buzzer are electrically connected to the second main control module. When the gas concentration data exceeds the standard, the second main control module synchronously drives the high-brightness LED flash to light up and the high-decibel buzzer to sound.

[0028] In some embodiments, the detection terminal host further includes a data storage module, which is electrically connected to the first main control module and is used to receive and store historical gas concentration data processed by the first main control module, so as to trace and analyze historical detection data.

[0029] In some embodiments, the gas sensor includes at least one of a catalytic combustion sensor, an electrochemical sensor, or a paramagnetic oxygen sensor; the catalytic combustion sensor is used to detect the concentration of combustible gas, the electrochemical sensor is used to detect the concentration of toxic gas, and the paramagnetic oxygen sensor is used to detect the concentration of oxygen.

[0030] In some embodiments, both the first main control module and the second main control module are low-power microcontrollers. The first main control module has signal filtering, signal amplification, and analog-to-digital conversion functions, used to convert the analog electrical signal output by the gas sensor into a digital signal and calculate the gas concentration value. The second main control module has data verification and decoding functions, used to verify the gas concentration data parsed by the wireless communication receiving module.

[0031] In some embodiments, the detachable reading gas detector is configured as follows: The detection terminal host and the supervision terminal are started. The wireless communication transmitting module of the detection terminal host and the wireless communication receiving module of the supervision terminal automatically perform frequency band matching to establish a stable wireless data transmission link. The gas sensor of the detection terminal host continuously collects the ambient gas at the detection location, converts the gas concentration information into an analog electrical signal and transmits it to the first main control module. The first main control module sequentially filters, amplifies and performs analog-to-digital conversion on the analog electrical signal to obtain digitized gas concentration data, and simultaneously drives the first display module to display the gas concentration data in real time. The first main control module packages the processed gas concentration data into a data packet with a preset format and sends it outward through the wireless communication transmission module at a set transmission frequency. After receiving the data packet, the wireless communication receiving module of the monitoring terminal receives it and transmits it to the second main control module. The second main control module verifies and decodes the data packet, extracts the gas concentration data, and drives the second display module to synchronously display the gas concentration data and the data acquisition timestamp. The second main control module compares the real-time gas concentration data with the pre-stored safety thresholds for each type of gas. If the gas concentration data reaches or exceeds the corresponding threshold, the second main control module immediately drives the high-brightness LED flashlight of the alarm module to flash at a frequency of 5-10 times / second, and simultaneously controls the high-decibel buzzer to emit an intermittent alarm sound of 80-120dB. The second display module also highlights the type and concentration value of the gas exceeding the standard in bright red font.

[0032] In some embodiments, the detachable gas detector is further configured to: During the detection process, the first main control module of the detection terminal host synchronously stores the gas concentration data and acquisition time information after each processing to the data storage module according to the set storage interval. After the detection is completed, the historical data is exported through the data export interface for subsequent detection process review and environmental safety analysis.

[0033] In some embodiments, the gas sensor's data acquisition process further includes a zero-point calibration step: Before the detection begins, the main unit of the detection terminal is placed in a clean air environment of a preset environment. The first main control module controls the gas sensor to collect the electrical signal of the clean air and sets it as the zero reference value. In the subsequent detection process, the difference between the electrical signal collected in real time and the zero reference value is calculated to eliminate sensor drift error.

[0034] In some embodiments, the detachable gas detector is further configured to: If the wireless communication receiving module does not receive a data packet sent by the wireless communication transmitting module for 5-10 consecutive seconds, the second main control module determines that the wireless connection is interrupted, drives the alarm module to issue an alarm signal different from the concentration exceeding the standard, and at the same time, the second display module displays a connection interruption prompt, and the first display module of the detection terminal host synchronously displays a connection abnormality, reminding the detection personnel to check the equipment location or restart the wireless module.

[0035] Example

[0036] Please see Figure 1 The detachable reading gas detector provided in this embodiment mainly includes two parts: the detection terminal main unit 100 and the monitoring terminal unit 200.

[0037] The main unit 100 for testing is a portable device carried by testing personnel entering confined spaces. Its casing is robust and has explosion-proof and certain waterproof and dustproof capabilities (such as IP54 and above).

[0038] Its core internal components include: 1. Gas sensor 101: This can be a catalytic combustion sensor (for detecting combustible gases such as methane), an electrochemical sensor (for detecting toxic gases such as H2S and CO), or a paramagnetic oxygen sensor (for detecting oxygen concentration). Depending on the actual needs, a single host unit can be configured with one or more different types of sensors.

[0039] 2. First main control module 102: It adopts a low-power microcontroller (MCU) and is responsible for collecting the analog signal output by the gas sensor 101, filtering, amplifying, analog-to-digital conversion (ADC) and concentration calculation to obtain an accurate gas concentration value.

[0040] 3. First display module 103: It adopts a small LCD or OLED display screen, which is installed on the surface of the host casing to display the current detected gas concentration values, battery power, wireless connection status and other information in real time for on-site testing personnel to view.

[0041] 4. Wireless communication transmitting module 104: In this embodiment, a LoRa module is preferably used. LoRa technology has the characteristics of long transmission distance (up to several kilometers in open areas), low power consumption, and strong anti-interference ability, making it very suitable for complex industrial environments. This module packages the data processed by the first main control module 102 and transmits it at a specific frequency (such as 470MHz).

[0042] 5. First power module 105: It is a high-capacity rechargeable lithium battery to ensure continuous operation of the host for a long time (e.g., >8 hours). It also integrates a power management circuit and has overcharge, over-discharge, and short-circuit protection functions.

[0043] The terminal block monitoring machine 200 is a handheld or desktop device, held by safety supervisors located outside a confined space. Its ergonomic design facilitates carrying and operation. Its core internal components include: 1. Wireless communication receiving module 201: It also adopts a LoRa module paired with the detection end, which is responsible for receiving data packets from the detection end host 100 and performing verification and decoding.

[0044] 2. Second main control module 202: It also uses a microcontroller (MCU) to process the received data and drive other modules to work.

[0045] 3. Second display module 203: Employs a larger LCD screen than the detection end, clearly and intuitively displaying the various gas concentration values ​​transmitted from the detection end simultaneously. The interface can be designed as a graphical interface and simultaneously display trend graphs, facilitating quick judgment by supervisors.

[0046] 4. Alarm Module 204: Composed of a high-brightness LED light and a high-decibel buzzer. The second main control module 202 has preset safety alarm thresholds for various gases (e.g., combustible gas alarms at 10% LEL for low levels and 20% LEL for high levels; H2S alarms at 10 ppm for low levels and 20 ppm for high levels). When the received data exceeds the set threshold, an audible and visual alarm is immediately triggered to remind supervisors to take emergency measures.

[0047] 5. Second power module 205: It is also a rechargeable lithium battery, but its capacity can be relatively small because its power consumption is low.

[0048] The above embodiments provide the following workflow for a detachable reading gas detector: 1. Before the operation, the testing personnel carry the testing terminal host 100, and the external supervisors carry the supervision terminal host 200.

[0049] 2. After both devices are powered on, a wireless connection is automatically established via the LoRa module.

[0050] 3. The detection host 100 collects gas concentration in real time and displays it on the local first display module 103, while simultaneously transmitting the data through the wireless communication transmission module 104.

[0051] 4. The monitoring terminal 200 receives data through the wireless communication receiving module 201 and displays it synchronously on the second display module 203.

[0052] 5. Once the gas concentration in the confined space exceeds the standard, the alarm module 204 of the monitoring terminal 200 will immediately issue an audible and visual alarm, allowing external supervisors to take immediate action.

[0053] This application successfully achieves real-time synchronous display of data at the gas detection location (such as inside a confined space) and the external monitoring location by designing the detector as a detachable detection end and monitoring end, and utilizing wireless communication technology. External monitoring personnel can monitor the internal environment at any time without entering or waiting. When the internal gas concentration is abnormal, the monitoring terminal can immediately issue an alarm, allowing external personnel to initiate emergency response (such as notifying evacuation and starting ventilation) immediately, thus providing a crucial external safety barrier for internal workers and greatly reducing the risk of safety and quality accidents. The detachable reading gas detector provided by this application achieves transparency of internal and external information, avoiding work interruptions caused by uncertain information, and also reducing the need for frequent entry and exit of detection personnel to report data, making the work process smoother and more efficient. The detachable design makes this gas detector not only suitable for confined spaces, but also flexible for other scenarios requiring remote, synchronous monitoring of gas concentration, such as underground mines and long-distance pipeline inspections.

[0054] As described in the above embodiments, this application provides a detachable gas detector, including a detection terminal and a monitoring terminal. The monitoring terminal is physically separated from the detection terminal and is used to receive and process data at a safe monitoring location. The detection terminal is used to collect ambient gas at the gas detection location and includes at least one gas sensor, a first main control module, a first display module, a wireless communication transmitting module, and a first power module. The monitoring terminal includes a wireless communication receiving module, a second main control module, a second display module, an alarm module, and a second power module. By designing the detector as a detachable detection terminal and monitoring terminal and utilizing wireless communication technology, this application successfully achieves real-time synchronous display of data at gas detection locations, such as inside enclosed spaces, and at external monitoring locations. External monitoring personnel can monitor the internal environment at any time without entering or waiting. When the internal gas concentration is abnormal, the monitoring terminal can immediately issue an alarm, allowing external personnel to initiate an emergency response immediately, thus providing a crucial external safety barrier for internal workers and greatly reducing the risk of safety and quality accidents.

[0055] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A detachable gas detector, characterized in that, Includes the detection terminal main unit and the monitoring terminal unit; The monitoring terminal is physically separated from the detection terminal host, and the monitoring terminal is used to receive and process data at a safe monitoring location; The detection terminal host is used to collect ambient gas at the gas detection location. The detection terminal host includes at least one gas sensor, a first main control module, a first display module, a wireless communication transmission module, and a first power supply module. The gas sensor is electrically connected to the first main control module, and the gas sensor is used to detect the concentration of the target gas and output an electrical signal; The first main control module is electrically connected to the first display module. The first main control module is used to receive and process the electrical signal and convert it into digital gas concentration data, and drive the first display module to display the gas concentration data locally in real time. The first main control module is also electrically connected to the wireless communication transmitting module, which is used to transmit the gas concentration data in the form of a wireless signal; The first power module is used to provide operating power to each module of the detection terminal host.

2. The detachable reading gas detector according to claim 1, characterized in that, The monitoring terminal includes a wireless communication receiving module, a second main control module, a second display module, an alarm module, and a second power supply module; The wireless communication receiving module is electrically connected to the second main control module. The wireless communication receiving module is used to receive wireless signals emitted by the wireless communication transmitting module of the detection terminal host and to parse out the gas concentration data. The second main control module is electrically connected to the second display module. The second main control module is used to receive and process the gas concentration data, and drive the second display module to display the gas concentration data in real time. The second main control module is also electrically connected to the alarm module. When the received gas concentration data reaches or exceeds the preset alarm threshold, it drives the alarm module to issue an audible and visual alarm signal. The second power module is used to provide operating power to each module of the supervisory terminal machine.

3. The detachable reading gas detector according to claim 2, characterized in that, The alarm module includes a high-brightness LED flash and a high-decibel buzzer. Both the high-brightness LED flash and the high-decibel buzzer are electrically connected to the second main control module. When the gas concentration data exceeds the standard, the second main control module synchronously drives the high-brightness LED flash to light up and the high-decibel buzzer to sound.

4. The detachable reading gas detector according to claim 2, characterized in that, The detection terminal host also includes a data storage module, which is electrically connected to the first main control module. The data storage module is used to receive and store historical gas concentration data processed by the first main control module, so as to trace and analyze historical detection data.

5. The detachable reading gas detector according to claim 4, characterized in that, The gas sensor includes at least one of a catalytic combustion sensor, an electrochemical sensor, or a paramagnetic oxygen sensor; the catalytic combustion sensor is used to detect the concentration of combustible gas, the electrochemical sensor is used to detect the concentration of toxic gas, and the paramagnetic oxygen sensor is used to detect the concentration of oxygen.

6. The detachable reading gas detector according to claim 5, characterized in that, Both the first main control module and the second main control module are low-power microcontrollers. The first main control module has signal filtering, signal amplification, and analog-to-digital conversion functions, which are used to convert the analog electrical signal output by the gas sensor into a digital signal and calculate the gas concentration value. The second main control module has data verification and decoding functions, which are used to verify the gas concentration data parsed by the wireless communication receiving module.

7. The detachable reading gas detector according to claim 6, characterized in that, The detachable gas detector is configured as follows: The detection terminal host and the supervision terminal are started. The wireless communication transmitting module of the detection terminal host and the wireless communication receiving module of the supervision terminal perform frequency band matching to establish a stable wireless data transmission link. The gas sensor of the detection terminal host continuously collects the ambient gas at the detection location, converts the gas concentration information into an analog electrical signal and transmits it to the first main control module. The first main control module sequentially filters, amplifies and performs analog-to-digital conversion on the analog electrical signal to obtain digitized gas concentration data, and simultaneously drives the first display module to display the gas concentration data in real time. The first main control module packages the processed gas concentration data into a data packet with a preset format and sends it outward through the wireless communication transmission module at a set transmission frequency. After receiving the data packet, the wireless communication receiving module of the monitoring terminal receives it and transmits it to the second main control module. The second main control module verifies and decodes the data packet, extracts the gas concentration data, and drives the second display module to synchronously display the gas concentration data and the data acquisition timestamp. The second main control module compares the real-time gas concentration data with the pre-stored safety thresholds for various types of gases. If the gas concentration data reaches or exceeds the corresponding threshold, the second main control module drives the high-brightness LED flashlight of the alarm module to flash at a frequency of 5-10 times / second, and at the same time controls the high-decibel buzzer to emit an intermittent alarm sound of 80-120dB. The second display module highlights the type and concentration value of the gas exceeding the standard in bright font.

8. The detachable reading gas detector according to claim 7, characterized in that, The detachable gas detector is also configured to: During the detection process, the first main control module of the detection terminal host synchronously stores the gas concentration data and acquisition time information after each processing to the data storage module according to the preset storage interval. After the detection is completed, the historical data is exported through the data export interface for subsequent detection process review and environmental safety analysis.

9. The detachable reading gas detector according to claim 7, characterized in that, The gas sensor's data acquisition process also includes a zero-point calibration step: Before the test begins, the main unit of the test terminal is placed in a clean air environment of the calibration environment. The first main control module controls the gas sensor to collect the electrical signal of the clean air and set it as the zero reference value. In the subsequent test process, the difference between the electrical signal collected in real time and the zero reference value is calculated to eliminate sensor drift error.

10. The detachable reading gas detector according to claim 7, characterized in that, The detachable gas detector is also configured to: If the wireless communication receiving module does not receive a data packet sent by the wireless communication transmitting module for 5-10 consecutive seconds, the second main control module determines that the wireless connection is interrupted, drives the alarm module to issue an alarm signal different from the concentration exceeding the standard, and at the same time, the second display module displays a connection interruption prompt, and the first display module of the detection terminal host synchronously displays a connection abnormality, reminding the detection personnel to check the equipment location or restart the wireless module.

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