High-risk operation gas monitoring method, terminal and system, alarm method and alarm device

Abstract

The present invention provides a method, device and system for monitoring gas in high-risk operations, and an alarm method and device. The gas monitoring system includes a cloud system, a mobile monitoring terminal and a gas alarm. The gas alarm collects gas samples in the high-risk operation area and analyzes them, generates gas detection results, generates corresponding data transmission requests, and then sends the data transmission requests to the mobile monitoring terminal. The mobile monitoring terminal determines the signal backoff time of the corresponding gas detection result according to the data transmission request, generates corresponding data transmission instructions and sends them to the corresponding gas alarms respectively. After receiving the data transmission instruction, each gas alarm sends the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, so as to avoid multiple gas alarms sending gas detection results at the same time, causing channel congestion, improve data transmission efficiency and data transmission success rate, and effectively monitor high-risk operation areas.

Description

Technical Field

[0001] The present invention relates to the field of petrochemical enterprise monitoring technology, and in particular to a high-risk operation gas monitoring method, a mobile monitoring terminal, a high-risk operation gas alarm method, a gas alarm device and a high-risk operation gas monitoring system. Background Art

[0002] The petrochemical industry is a high-risk industry that involves highly dangerous materials, especially when there are toxic and harmful gases at the operation site. There is an urgent need for real-time monitoring and effective supervision of high-risk operation areas.

[0003] LoRa is a long-distance wireless transmission method based on spread spectrum technology. It has the advantages of low power consumption, narrow bandwidth, long transmission distance, low cost, and wide coverage. It is suitable for battery-powered IoT devices that require long-distance, low-power transmission. Therefore, in the existing technology, multiple gas alarms are deployed in high-risk work areas to detect gases within the high-risk work areas. The detection results are then sent to monitoring terminals located outside the high-risk work areas via the LoRa wireless network. The monitoring terminals then upload the detection results to the cloud system, thereby monitoring and effectively regulating the gas in the high-risk work areas.

[0004] However, in the existing technology, the monitoring terminal may receive the detection results of multiple gas alarms at the same time. Due to the limited channel capacity, the monitoring terminal cannot receive multiple detection results at the same time, which causes channel congestion, increases the probability of data conflict, and has a high packet loss rate. Important results cannot be sent to the monitoring terminal in a timely manner, reducing data transmission efficiency. Summary of the Invention

[0005] In response to the technical problems in the existing technology such as channel congestion, high packet loss rate, low data transmission efficiency and inability to send important results to the monitoring terminal in a timely manner, the present invention provides a high-risk operation gas monitoring method, a mobile monitoring terminal, a high-risk operation gas alarm method, a gas alarm instrument and a high-risk operation gas monitoring system. The technical solution of the present invention can avoid data conflicts, reduce packet loss rate, improve data transmission efficiency, give priority to sending important data, and effectively monitor high-risk operation areas.

[0006] To achieve the above-mentioned objectives, the first aspect of the present invention provides a high-risk operation gas monitoring method, which is applied to a mobile monitoring terminal, and the mobile monitoring terminal transmits data with multiple gas alarms installed in high-risk operation areas through a LoRa wireless network. The high-risk operation gas monitoring method includes: when data transmission requests are received from multiple gas alarms within a set time period, generating corresponding data transmission instructions according to the data transmission requests and sending them to the gas alarms corresponding to the data transmission requests respectively, wherein the data transmission request includes the sending priority of the gas detection result, and the data transmission instruction includes the signal backoff time for sending the gas detection result; forwarding the gas detection result received from the gas alarm to the cloud system, wherein each gas alarm sends the gas detection result according to the signal backoff time in the received data transmission instruction.

[0007] Furthermore, the higher the level of the sending priority, the shorter the duration of the signal backoff time.

[0008] The second aspect of the present invention provides a high-risk operation gas alarm method, which is applied to a gas alarm installed in a high-risk operation area, and the high-risk operation gas alarm method includes: determining to obtain a gas collection instruction, and collecting gas samples in the high-risk operation area; analyzing the collected gas samples to generate a gas detection result; generating a corresponding data transmission request according to the gas detection result, and the data transmission request includes the sending priority of the gas detection result; sending the data transmission request to a mobile monitoring terminal arranged outside the high-risk operation area; determining to receive the data transmission instruction fed back by the mobile monitoring terminal, and sending the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, wherein the mobile monitoring terminal generates a corresponding data transmission instruction according to the data transmission request when receiving data transmission requests from multiple gas alarms within a set time period, and sends them to the gas alarms corresponding to the data transmission request respectively, and the data transmission instruction includes the signal backoff time for sending the gas detection result.

[0009] Furthermore, the greater the number of gases exceeding the standard, the higher the level of the sending priority, wherein the number of gases exceeding the standard is the number of gases in the gas sample whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate, the higher the level of the sending priority, wherein the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample.

[0010] Furthermore, the method also includes: if the gas detection result fails to be sent, repeatedly sending the gas detection result at a set frequency and a set number of times; if the gas detection result fails to be sent repeatedly according to the set number of times, stopping sending the gas detection result.

[0011] The third aspect of the present invention provides a mobile monitoring terminal, which transmits data with multiple gas alarms installed in high-risk working areas through a LoRa wireless network. The mobile monitoring terminal includes: a generation unit, which is used to generate corresponding data transmission instructions according to the data transmission requests when receiving data transmission requests from multiple gas alarms within a set time period, and send them to the gas alarms corresponding to the data transmission requests respectively, wherein the data transmission request includes the sending priority of the gas detection result, and the data transmission instruction includes the signal backoff time for sending the gas detection result; a transmission unit, which is used to forward the gas detection results received from the gas alarm to a cloud system, wherein each gas alarm sends the gas detection result according to the signal backoff time in the received data transmission instruction.

[0012] Furthermore, the higher the level of the sending priority, the shorter the duration of the signal backoff time.

[0013] The fourth aspect of the present invention provides a gas alarm, which is installed in a high-risk operation area, and the gas alarm includes: a gas collection unit, which is used to determine whether a gas collection instruction has been obtained and collect gas samples in the high-risk operation area; a gas detection result generation unit, which is used to analyze the collected gas samples and generate gas detection results; a data transmission request generation unit, which is used to generate a corresponding data transmission request based on the gas detection result, and the data transmission request includes the sending priority of the gas detection result; a communication unit, which sends the data transmission request to a mobile monitoring terminal arranged outside the high-risk operation area; and determines whether the data transmission instruction fed back by the mobile monitoring terminal is received, and sends the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, wherein the mobile monitoring terminal generates a corresponding data transmission instruction according to the data transmission request when receiving data transmission requests from multiple gas alarms within a set time period and sends them to the gas alarms corresponding to the data transmission request respectively, and the data transmission instruction includes the signal backoff time for sending the gas detection result.

[0014] Furthermore, the gas detection result includes a sending priority of the gas detection result; and generating a data transmission request according to the gas detection result includes: generating the data transmission request according to the sending priority.

[0015] Furthermore, the greater the number of gases exceeding the standard, the higher the level of the sending priority, wherein the number of gases exceeding the standard is the number of gases in the gas sample whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate, the higher the level of the sending priority, wherein the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample.

[0016] Furthermore, the communication unit is also used to: if the gas detection result fails to be sent, repeatedly send the gas detection result at a set frequency and a set number of times; if the gas detection result fails to be sent repeatedly according to the set number of times, stop sending the gas detection result.

[0017] The fifth aspect of the present invention provides a high-risk operation gas monitoring system, which includes: a cloud system, the mobile monitoring terminal mentioned above, and the gas alarm mentioned above; the transmission unit of the mobile monitoring terminal transmits data with the communication unit of the gas alarm via the LoRa wireless network; the transmission unit of the mobile monitoring terminal transmits data with the cloud system via the 4G and WIFI wireless networks.

[0018] According to the above technical solution of the present invention, the mobile monitoring terminal is installed outside the high-risk operation area, and data is transmitted with multiple gas alarms installed in the high-risk operation area through the LoRa wireless network. The gas alarm collects gas samples in the high-risk operation area according to the gas collection instruction, analyzes the collected gas samples, generates gas detection results, determines the sending priority of the detection results, generates corresponding data transmission requests, and then sends the data transmission requests to the mobile monitoring terminal. The mobile monitoring terminal can obtain the channel occupancy based on the number of data transmission requests received within the set time period, determine the signal backoff time of the corresponding gas detection result based on the data transmission request, generate corresponding data transmission instructions and send them to the gas alarm corresponding to the data transmission request. After receiving the data transmission instruction, each gas alarm sends the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, avoiding multiple gas alarms sending gas detection results at the same time, causing channel congestion, reducing packet loss rate, improving data transmission efficiency, giving priority to sending important data, and effectively monitoring high-risk operation areas.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A flow chart of a method for monitoring high-risk gas in operation according to an embodiment of the present invention;

[0021] Figure 2 A flow chart of a high-risk gas alarm method provided by an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of a mobile monitoring terminal provided in an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a gas alarm provided in an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of a high-risk operation gas monitoring system provided in an embodiment of the present invention.

[0025] Description of Reference Numerals

[0026] 301-Generation Unit 302-Transmission Unit

[0027] 401-Gas Collection Unit 402-Gas Collection Unit

[0028] 403-Data transmission request generation unit 404-Communication unit DETAILED DESCRIPTION

[0029] The following describes the specific implementation of the embodiment of the present invention in detail with reference to the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the embodiment of the present invention and is not used to limit the embodiment of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0031] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom" are usually used to describe the relative positions of components in the directions shown in the drawings or in the vertical, perpendicular or gravity directions.

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0033] The embodiment of the present invention adopts a split design, including settings in a mobile monitoring terminal and a gas alarm. The mobile monitoring terminal needs to transmit the gas alarm signal to the cloud system through the 4G and WIFI wireless networks for real-time viewing or access by monitoring personnel. Since the 4G and WIFI wireless network communication modules are large in size and inconvenient to move, and the 4G and WIFI wireless networks cannot reliably transmit signals in confined spaces or environments with obstructions, the mobile monitoring terminal is fixed outside the high-risk operation area with few obstructions and high signal transmission intensity. Data is transmitted between the mobile monitoring terminal and the gas alarm via the LoRa wireless network. The LoRa communication module is compact, which reduces the size and weight of the high-risk operation gas alarm and can move with the operator, thereby improving the flexibility of the high-risk operation gas monitoring system. The LoRa communication module has low power consumption and stable data transmission, and the gas alarm can be set in harsh environments such as confined spaces or obstructed areas.

[0034] Gas alarms can detect and analyze gases in high-risk work areas, generate gas detection results, and transmit them to mobile monitoring terminals. The mobile monitoring terminals transmit gas alarm signals to a cloud system, where monitoring personnel can query or access gas detection results in real time, providing real-time monitoring and early warning of hazardous gases in these areas. Using the LoRa wireless network, a single mobile monitoring terminal for high-risk operations can connect to multiple gas alarms, enabling simultaneous monitoring of multiple sampling locations.

[0035] Please refer to Figure 1 The first aspect of the present invention provides a high-risk operation gas monitoring method, which is applied to a mobile monitoring terminal. The mobile monitoring terminal transmits data with multiple gas alarms installed in high-risk operation areas through a LoRa wireless network. The high-risk operation gas monitoring method includes: S101: when data transmission requests are received from multiple gas alarms within a set time period, corresponding data transmission instructions are generated according to the data transmission requests and sent to the gas alarms corresponding to the data transmission requests respectively, wherein the data transmission request includes the sending priority of the gas detection result, and the data transmission instruction includes the signal backoff time for sending the gas detection result; S102: forwarding the gas detection result received from the gas alarm to a cloud system, wherein each gas alarm sends the gas detection result according to the signal backoff time in the received data transmission instruction.

[0036] Specifically, in an embodiment of the present invention, the gas alarm collects gas samples in the high-risk operation area according to the received gas collection instruction, analyzes the collected gas samples, generates gas detection results, determines the sending priority of the detection results, generates a corresponding data transmission request, and then sends the data transmission request to the mobile monitoring terminal. The mobile monitoring terminal can obtain the channel occupancy based on the number of data transmission requests received from the gas alarm within the set time period, and determine the signal backoff time for sending the corresponding gas detection result according to the sending priority in the data transmission request, generate the corresponding data transmission instruction, and send it to the gas alarm corresponding to the data transmission request. After receiving the data transmission instruction, each gas alarm can send the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, so as to avoid multiple gas alarms sending gas detection results at the same time, causing channel congestion, and improve data transmission efficiency. After receiving the gas detection result, the mobile monitoring terminal transmits the gas detection result to the cloud system, and the staff can monitor the dangerous gas in the high-risk operation area in the cloud system.

[0037] The high-risk operation gas monitoring method provided by the present invention can avoid data conflicts, reduce packet loss rate, improve data transmission efficiency, give priority to sending important data, and effectively monitor high-risk gases in high-risk operation areas.

[0038] Furthermore, the higher the level of the sending priority, the shorter the duration of the signal backoff time.

[0039] Specifically, in an embodiment of the present invention, the higher the level of the sending priority in the data transmission request, the more urgent the gas detection result is, and it needs to be reported to the cloud system for processing as soon as possible. Therefore, the signal backoff time corresponding to the data transmission request is shorter.

[0040] According to the high-risk operation gas monitoring method provided by the present invention, the backoff time of the gas detection result can be determined according to the priority of the gas detection result. The higher the priority level of the gas detection result, the shorter the backoff time. The gas detection result can be uploaded to the cloud system as soon as possible, and the staff can supervise the high-risk operation area according to the gas detection results, which is convenient for the treatment of toxic and harmful gases, prevents the further spread of pollution, and provides targeted support for the safety supervision of the production environment.

[0041] Please refer to Figure 2According to a second aspect of the present invention, a high-risk operation gas alarm method is provided, which is applied to a gas alarm installed in a high-risk operation area. The high-risk operation gas alarm method includes: S201: determining whether a gas collection instruction has been obtained, and collecting gas samples in the high-risk operation area; S202: analyzing the collected gas samples to generate gas detection results; S203: generating a corresponding data transmission request based on the gas detection results, and the data transmission request includes the sending priority of the gas detection results; S204: sending the data transmission request to a mobile monitoring terminal arranged outside the high-risk operation area; S205: determining whether a data transmission instruction fed back by the mobile monitoring terminal has been received, and sending the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, wherein when the mobile monitoring terminal receives data transmission requests from multiple gas alarms within a set time period, it generates a corresponding data transmission instruction based on the data transmission request and sends it to the gas alarm corresponding to the data transmission request respectively, and the data transmission instruction includes the signal backoff time for sending the gas detection result.

[0042] Specifically, in an embodiment of the present invention, after receiving a gas collection instruction, the gas alarm collects gas samples in a high-risk operation area, analyzes the collected gas samples, generates gas detection results, determines the sending priority of the detection results, generates a corresponding data transmission request, and then sends the data transmission request to the mobile monitoring terminal. The mobile monitoring terminal can obtain the channel occupancy status based on the number of data transmission requests received from the gas alarm within a set time period, determine the signal backoff time for sending the corresponding gas detection result based on the sending priority, generate the corresponding data transmission instruction, and send it to the gas alarm corresponding to the data transmission request. After receiving the data transmission instruction, the gas alarm can send the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, so as to avoid multiple gas alarms sending gas detection results at the same time, causing channel congestion, and improve data transmission efficiency.

[0043] The high-risk operation gas alarm method provided by the present invention can avoid data conflicts, reduce packet loss rate, improve data transmission efficiency, give priority to sending important data, and effectively monitor high-risk operation areas.

[0044] Furthermore, the greater the number of gases exceeding the standard, the higher the level of the sending priority, wherein the number of gases exceeding the standard is the number of gases in the gas sample whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate, the higher the level of the sending priority, wherein the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample.

[0045] Specifically, in an embodiment of the present invention, the level of sending priority can be determined based on the number of gases exceeding the standard. The number of gases exceeding the standard is the number of gases in the gas sample whose current gas concentration is greater than the corresponding set concentration. The gas alarm stores a correspondence table between the number of gases exceeding the standard and the sending priority. The more gases exceeding the standard, the higher the level of sending priority. The gas alarm detects the collected sample gas to determine the number of gases exceeding the standard in the sample gas, and the corresponding level of sending priority can be found from the correspondence table. In a possible embodiment, gas alarms A and B are respectively set in a high-risk operation area. Gas alarm A samples the nearby gas according to the gas collection instruction, and analyzes the gas sample to detect the gas contained in the gas sample and the concentration of the gas. If the detected gas sample contains benzene, propane, butane, pentane, and xylene, and the gas concentrations of benzene and propane exceed the corresponding set concentrations, the number of gases exceeding the standard in the gas sample is 2, and the corresponding sending priority is found to be level four according to the correspondence table. Gas alarm device B samples nearby gas according to the gas collection instruction and analyzes the gas sample to detect the gas contained in the gas sample and the concentration of the gas. If the detected gas sample contains butane, pentane, ethanol, dichloromethane, and acetone, and the gas concentrations of pentane, ethanol, and dichloromethane exceed the corresponding set concentrations, then the number of gases exceeding the standard in the gas sample is 3. According to the corresponding relationship table, the corresponding sending priority is found to be level 3. The priority level of the gas detection result of gas alarm device B is greater than the priority level of the gas detection result of gas alarm device A.

[0046] In an embodiment of the present invention, the level of transmission priority can also be determined based on the maximum gas concentration exceedance rate. The maximum gas concentration exceedance rate is the gas concentration exceedance rate of the gas with the highest gas concentration exceedance rate in the gas sample. The gas alarm device stores a correspondence table between the maximum gas concentration exceedance rate and the transmission priority. The greater the maximum gas concentration exceedance rate, the higher the level of transmission priority. The gas alarm device detects the collected sample gas to determine the maximum gas concentration exceedance rate of the sample gas, and searches the correspondence table to obtain the corresponding level of transmission priority. In one possible embodiment, gas alarms A and B are respectively installed in high-risk operation areas. Gas alarm A samples nearby gases according to gas collection instructions, analyzes the gas samples, detects the gases contained in the gas samples and the concentration exceeding standard rate of the gases. If the detected gas sample contains benzene, propane, butane, pentane, and xylene, and the current gas concentrations of butane, pentane, and xylene do not exceed the corresponding set gas concentrations, the gas concentration exceeding standard rate of benzene is 50%, and the gas concentration exceeding standard rate of propane is 100%, then the gas with the largest gas concentration exceeding standard rate in the gas sample is propane, and the maximum gas concentration exceeding standard rate is 100%. According to the corresponding relationship table, the corresponding sending priority is found to be level four. Gas alarm device B samples nearby gas according to the gas collection instruction, analyzes the gas sample, detects the gas contained in the gas sample and the concentration exceeding the standard rate of the gas. If the detected gas sample contains butane, pentane, ethanol, dichloromethane, and acetone, among which the current gas concentrations of butane, pentane, ethanol, and dichloromethane do not exceed the corresponding set concentrations, and the gas concentration exceeding the standard rate of acetone is 200%, then the gas with the highest gas concentration exceeding the standard rate in the gas sample is acetone, and the maximum gas concentration exceeding the standard rate is 200%. According to the corresponding relationship table, the corresponding sending priority is found to be level 2. The priority level of the gas detection result of gas alarm device B is greater than the priority level of the gas detection result of gas alarm device A.

[0047] According to the high-risk operation gas alarm method provided by the present invention, the level of sending priority can be determined according to the amount of exceeding gas standards or the maximum gas concentration exceeding standard rate, and the signal backoff time can be determined more objectively and accurately, so as to give priority to sending the detection results of gases with serious pollution leakage, and give priority to monitoring and processing areas with serious leakage.

[0048] Furthermore, the method also includes: if the gas detection result fails to be sent, repeatedly sending the gas detection result at a set frequency and a set number of times; if the gas detection result fails to be sent repeatedly according to the set number of times, stopping sending the gas detection result.

[0049] Specifically, in an embodiment of the present invention, when the gas detection result is successfully sent to the monitoring terminal, the monitoring terminal will send an identification code indicating that the gas detection result has been sent successfully. If the gas alarm does not receive the identification code within the set time, it means that the sending has failed. In order to reduce the packet loss rate and increase the data transmission success rate, the gas alarm repeatedly sends the gas detection result at a set frequency and a set number of times. If it is still not sent successfully after the set number of times, it will stop sending the gas detection result.

[0050] The high-risk operation gas alarm method provided by the present invention can reduce the packet loss rate, improve the success rate of data transmission, ensure that the cloud system receives the gas detection results in a timely manner, and effectively monitor high-risk operation areas.

[0051] Please refer to Figure 3 According to a third aspect of the present invention, a mobile monitoring terminal is provided, which transmits data with multiple gas alarms installed in high-risk operation areas through a LoRa wireless network. The mobile monitoring terminal includes: a generation unit 301, which is used to generate corresponding data transmission instructions according to the data transmission requests when receiving data transmission requests from multiple gas alarms within a set time period, and send them to the gas alarms corresponding to the data transmission requests respectively, wherein the data transmission request includes the sending priority of the gas detection result, and the data transmission instruction includes the signal backoff time for sending the gas detection result; a transmission unit 302, which is used to forward the gas detection results received from the gas alarm to a cloud system, wherein each gas alarm sends the gas detection result according to the signal backoff time in the received data transmission instruction.

[0052] Furthermore, the higher the level of the sending priority, the shorter the duration of the signal backoff time.

[0053] Please refer to Figure 4According to a fourth aspect of the present invention, a gas alarm is provided, which is installed in a high-risk operation area and includes: a gas collection unit 401, which is used to determine whether a gas collection instruction has been obtained and collect gas samples in the high-risk operation area; a gas detection result generation unit 402, which is used to analyze the collected gas samples and generate gas detection results; a data transmission request generation unit 403, which is used to generate a corresponding data transmission request according to the gas detection result, and the data transmission request includes the sending priority of the gas detection result; a communication unit 404, which sends the data transmission request to a mobile monitoring terminal arranged outside the high-risk operation area; and determines whether a data transmission instruction fed back by the mobile monitoring terminal is received, and sends the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, wherein when the mobile monitoring terminal receives data transmission requests from multiple gas alarms within a set time period, it generates corresponding data transmission instructions according to the data transmission requests and sends them to the gas alarms corresponding to the data transmission requests respectively, and the data transmission instructions include the signal backoff time for sending the gas detection results.

[0054] Furthermore, the gas detection result includes a sending priority of the gas detection result; and generating a data transmission request according to the gas detection result includes: generating the data transmission request according to the sending priority.

[0055] Furthermore, the greater the number of gases exceeding the standard, the higher the level of the sending priority, wherein the number of gases exceeding the standard is the number of gases in the gas sample whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate, the higher the level of the sending priority, wherein the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample.

[0056] Furthermore, the communication unit is also used to: if the gas detection result fails to be sent, repeatedly send the gas detection result at a set frequency and a set number of times; if the gas detection result fails to be sent repeatedly according to the set number of times, stop sending the gas detection result.

[0057] Please refer to Figure 5 In a fifth aspect, the present invention provides a high-risk operation gas monitoring system, which includes: a cloud system, the mobile monitoring terminal mentioned above, and the gas alarm mentioned above; the transmission unit of the mobile monitoring terminal transmits data with the communication unit of the gas alarm via the LoRa wireless network; the transmission unit of the mobile monitoring terminal transmits data with the cloud system via the 4G and WIFI wireless networks.

[0058] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the scope of protection of the present invention.

[0059] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0060] In addition, the various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A high-risk operation gas monitoring method, applied to a mobile monitoring terminal, wherein the mobile monitoring terminal transmits data with multiple gas alarms installed in a high-risk operation area via a LoRa wireless network, characterized in that: The high-risk operation gas monitoring method comprises: In the case of receiving data transmission requests from multiple gas alarms within a set time period, corresponding data transmission instructions are generated according to the data transmission requests and sent to the gas alarms corresponding to the data transmission requests respectively, wherein the data transmission request includes the sending priority of the gas detection result, and the data transmission instruction includes the signal backoff time for sending the gas detection result; wherein, the more the number of gases exceeding the standard, the higher the level of the sending priority, wherein the number of gases exceeding the standard is the number of gases in the gas samples collected in the high-risk operation area whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate, the higher the level of the sending priority, wherein the maximum gas concentration exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample; When a gas detection result is received, an identification code is generated and sent to the gas alarm corresponding to the gas detection result, and the gas detection result received from the gas alarm is forwarded to the cloud system, wherein each gas alarm sends the gas detection result according to the signal backoff time in the received data transmission instruction; when the gas alarm does not receive the identification code, the gas detection result is repeatedly sent at a set frequency and a set number of times; when the repeated sending of the gas detection result fails according to the set number of times, the sending of the gas detection result is stopped.

2. The high-risk operation gas monitoring method according to claim 1 is characterized in that: The higher the level of the sending priority, the shorter the duration of the signal backoff time.

3. A high-risk operation gas alarm method, applied to a gas alarm installed in a high-risk operation area, characterized in that: The high-risk operation gas alarm method comprises: Determine that a gas collection instruction is obtained, and collect gas samples in the high-risk operation area; Analyze the collected gas samples and generate gas detection results; Generate a corresponding data transmission request according to the gas detection result, the data transmission request including the sending priority of the gas detection result; wherein, the more the number of gases exceeding the standard is, the higher the level of the sending priority is, wherein the number of gases exceeding the standard is the number of gases in the gas sample whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate is, the higher the level of the sending priority is, wherein the maximum gas concentration exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample; Sending the data transmission request to a mobile monitoring terminal located outside the high-risk operation area; Determine the data transmission instruction received as feedback from the mobile monitoring terminal, and send the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, wherein when the mobile monitoring terminal receives data transmission requests from multiple gas alarms within a set time period, it generates corresponding data transmission instructions according to the data transmission requests and sends them to the gas alarms corresponding to the data transmission requests respectively, and the data transmission instructions include the signal backoff time for sending the gas detection result; when the mobile monitoring terminal receives the gas detection result, it generates and sends an identification code to the gas alarm corresponding to the gas detection result; when the gas alarm does not receive the identification code, it repeatedly sends the gas detection result at a set frequency and a set number of times; when the repeated sending of the gas detection result according to the set number of times fails, it stops sending the gas detection result.

4. A mobile monitoring terminal, which transmits data with multiple gas alarms installed in a high-risk operation area through a LoRa wireless network, characterized in that: The mobile monitoring terminal comprises: A generating unit, for, upon receiving data transmission requests from a plurality of gas alarms within a set time period, generating corresponding data transmission instructions according to the data transmission requests and sending them respectively to the gas alarms corresponding to the data transmission requests, wherein the data transmission request includes a sending priority of the gas detection result, and the data transmission instruction includes a signal backoff time for sending the gas detection result; wherein, the more the number of gases exceeding the standard, the higher the level of the sending priority, wherein the number of gases exceeding the standard is the number of gases in the gas samples collected in the high-risk operation area whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate, the higher the level of the sending priority, wherein the maximum gas concentration exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample; A transmission unit is used to generate and send an identification code to a gas alarm corresponding to the gas detection result upon receiving the gas detection result, and forward the gas detection result received from the gas alarm to a cloud system, wherein each gas alarm sends the gas detection result according to the signal backoff time in the received data transmission instruction; if the gas alarm does not receive the identification code, the gas detection result is repeatedly sent at a set frequency and a set number of times; if the repeated sending of the gas detection result for the set number of times fails, the sending of the gas detection result is stopped.

5. The mobile monitoring terminal according to claim 4, characterized in that: The higher the level of the sending priority, the shorter the duration of the signal backoff time.

6. A gas alarm, which is installed in a high-risk operation area, characterized in that: The gas alarm device comprises: A gas collection unit, used to determine the acquisition of a gas collection instruction and collect gas samples in the high-risk operation area; A gas detection result generating unit, used to analyze the collected gas samples and generate gas detection results; A data transmission request generating unit, configured to generate a corresponding data transmission request according to the gas detection result, wherein the data transmission request includes a sending priority of the gas detection result; wherein, the more the number of gases exceeding the standard is, the higher the level of the sending priority is, wherein the number of gases exceeding the standard is the number of gases in the gas sample whose current gas concentration is greater than the corresponding set concentration; or the greater the maximum gas concentration exceeding rate is, the higher the level of the sending priority is, wherein the maximum gas concentration exceeding rate is the gas concentration exceeding rate of the gas with the largest gas concentration exceeding rate in the gas sample; A communication unit sends the data transmission request to a mobile monitoring terminal arranged outside the high-risk operation area; and determines the data transmission instruction fed back by the mobile monitoring terminal, and sends the gas detection result to the mobile monitoring terminal according to the signal backoff time in the data transmission instruction, wherein the mobile monitoring terminal generates corresponding data transmission instructions according to the data transmission requests when receiving data transmission requests from multiple gas alarms within a set time period and sends them to the gas alarms corresponding to the data transmission requests respectively, and the data transmission instructions include the signal backoff time for sending the gas detection result; when the mobile monitoring terminal receives the gas detection result, an identification code is generated and sent to the gas alarm corresponding to the gas detection result; when the gas alarm does not receive the identification code, the gas detection result is repeatedly sent at a set frequency and a set number of times; when the repeated sending of the gas detection result according to the set number of times fails, the sending of the gas detection result is stopped.

7. The gas alarm according to claim 6, characterized in that: The gas detection result includes a sending priority of the gas detection result; Generating a data transmission request according to the gas detection result comprises: The data transmission request is generated according to the sending priority.

8. A high-risk operation gas monitoring system, characterized in that: The high-risk operation gas monitoring system includes: A cloud system, a mobile monitoring terminal according to claim 4 or 5, and a gas alarm according to any one of claims 6 and 7; The transmission unit of the mobile monitoring terminal transmits data with the communication unit of the gas alarm through the LoRa wireless network; The transmission unit of the mobile monitoring terminal transmits data with the cloud system via 4G and WIFI wireless networks.

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