Disclosure of Invention
Aiming at the technical problems that in the prior art, a channel is jammed, the packet loss rate is high, the data transmission efficiency is low and important results cannot be timely transmitted to a monitoring terminal, the 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.
In order to achieve the above object, a first aspect of the present invention provides a high-risk operation gas monitoring method, which is applied to a mobile monitoring terminal, wherein the mobile monitoring terminal performs data transmission with a plurality of gas alarms installed in a high-risk operation area through a LoRa wireless network, the high-risk operation gas monitoring method includes generating corresponding data transmission instructions according to the data transmission requests and respectively sending the data transmission instructions to the gas alarms corresponding to the data transmission requests when the data transmission requests are received in a set period of time, wherein the data transmission requests include sending priority of gas detection results, the data transmission instructions include signal back-off time for sending the gas detection results, and forwarding the gas detection results received from the gas alarms to a cloud system, wherein each gas alarm sends the gas detection results according to the signal back-off time in the received data transmission instructions.
Further, the higher the level of the transmission priority, the shorter the duration of the signal back-off time.
The second aspect of the invention provides a high-risk operation gas alarm method which is applied to a gas alarm installed in a high-risk operation area, and comprises the steps of determining that a gas acquisition instruction is acquired, acquiring gas samples in the high-risk operation area, analyzing the acquired gas samples to generate a gas detection result, generating a corresponding data transmission request according to the gas detection result, wherein the data transmission request comprises a 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 that a data transmission instruction fed back by the mobile monitoring terminal is received, and sending the gas detection result to the mobile monitoring terminal according to 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 and respectively sends the data transmission instruction to the gas alarm corresponding to the data transmission request when the data transmission request is received in a set time period, and the data transmission instruction comprises the signal backoff time for sending the gas detection result.
Further, the more the number of the exceeding gas is, the higher the level of the sending priority is, wherein the number of the exceeding gas is the number of the gas with the current gas concentration larger than the corresponding set concentration in the gas sample, or the greater the maximum gas concentration exceeding rate is, the higher the level of the sending priority is, and the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the maximum gas concentration exceeding rate in the gas sample.
Further, the method comprises the steps of repeatedly sending the gas detection result at a set frequency and a set number of times when the gas detection result fails to be sent, and stopping sending the gas detection result when the gas detection result fails to be sent repeatedly according to the set number of times.
The third aspect of the invention provides a mobile monitoring terminal, which performs data transmission with a plurality of gas alarms installed in a high-risk operation area through a LoRa wireless network, and comprises a generation unit, a transmission unit and a cloud system, wherein the generation unit is used for generating corresponding data transmission instructions according to the data transmission requests and respectively sending the data transmission instructions to the gas alarms corresponding to the data transmission requests when the data transmission requests are received in a set time period, the data transmission requests comprise sending priorities of gas detection results, the data transmission instructions comprise signal back-off times for sending the gas detection results, and the transmission unit is used for forwarding the gas detection results received from the gas alarms to the cloud system, and each gas alarm sends the gas detection results according to the signal back-off times in the received data transmission instructions.
Further, the higher the level of the transmission priority, the shorter the duration of the signal back-off time.
The fourth aspect of the invention provides a gas alarm which is arranged in a high-risk operation area and comprises a gas acquisition unit, a gas detection result generation unit, a data transmission request generation unit, a communication unit and a mobile monitoring terminal, wherein the gas acquisition unit is used for determining that a gas acquisition instruction is acquired and acquiring a gas sample in the high-risk operation area, the gas detection result generation unit is used for analyzing the acquired gas sample and generating a gas detection result, the data transmission request generation unit is used for generating a corresponding data transmission request according to the gas detection result, the data transmission request comprises the sending priority of the gas detection result, the communication unit is used for sending the data transmission request to the mobile monitoring terminal arranged outside the high-risk operation area, the data transmission instruction fed back by the mobile monitoring terminal is determined, the gas detection result is sent to the mobile monitoring terminal according to the signal back-off time in the data transmission instruction, and the mobile monitoring terminal generates a corresponding data transmission instruction according to the data transmission request and respectively sends the data transmission request to the gas alarm corresponding to the data transmission request when the data transmission request from a plurality of gas alarm devices is received in a set time period, and the data transmission instruction comprises the signal back-off time of the gas detection result.
Further, the gas detection result comprises a sending priority of the gas detection result, and the generating of the data transmission request according to the gas detection result comprises the step of generating the data transmission request according to the sending priority.
Further, the more the number of the exceeding gas is, the higher the level of the sending priority is, wherein the number of the exceeding gas is the number of the gas with the current gas concentration larger than the corresponding set concentration in the gas sample, or the greater the maximum gas concentration exceeding rate is, the higher the level of the sending priority is, and the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the maximum gas concentration exceeding rate in the gas sample.
Further, the communication unit is further configured to repeat transmission of the gas detection result at a set frequency and a set number of times in case the gas detection result fails to be transmitted, and stop transmission of the gas detection result in case the gas detection result fails to be transmitted repeatedly at the set number of times.
The fifth aspect of the invention provides a high-risk operation gas monitoring system, which comprises a cloud system, the mobile monitoring terminal and the gas alarm device, wherein the transmission unit of the mobile monitoring terminal is used for carrying out data transmission with the communication unit of the gas alarm device through a LoRa wireless network, and the transmission unit of the mobile monitoring terminal is used for carrying out data transmission with the cloud system through a 4G and WIFI wireless network.
According to the technical scheme, the mobile monitoring terminal is arranged outside a high-risk operation area, data transmission is carried out between the mobile monitoring terminal and a plurality of gas alarms arranged in the high-risk operation area through a LoRa wireless network, the gas alarms collect gas samples in the high-risk operation area according to gas collection instructions, analysis is carried out on the collected gas samples, gas detection results are generated, the sending priority of the detection results is determined, corresponding data transmission requests are generated, then the data transmission requests are sent to the mobile monitoring terminal, the mobile monitoring terminal can acquire the occupation condition of channels according to the number of the received data transmission requests within a set time period, and the corresponding data transmission instructions are generated and respectively sent to the gas alarms corresponding to the data transmission requests according to the signal backoff time of the corresponding gas detection results. After each gas alarm receives the data transmission instruction, the gas detection results are sent to the mobile monitoring terminal according to the signal back-off time in the data transmission instruction, so that channel congestion caused by the fact that a plurality of gas alarms send the gas detection results simultaneously is avoided, the packet loss rate is reduced, the data transmission efficiency is improved, important data are sent preferentially, and the high-risk operation area is effectively monitored.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Detailed Description
The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the present invention, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the positional relationship of the various components with respect to one another in the vertical, vertical or gravitational directions.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
The embodiment of the invention adopts a split design, and comprises 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 network for monitoring personnel to check or review in real time, and because the 4G and WIFI wireless network communication module is large in size and inconvenient to move, the 4G and WIFI wireless network cannot reliably transmit the signal in a limited space or in an environment with a shielding object, and therefore the mobile monitoring terminal is fixedly arranged outside a high-risk operation area with few shielding objects and high signal transmission intensity. Carry out data transmission through the wireless network of loRa between mobile monitoring terminal and the gas alarm, loRa communication module small in size has reduced the volume and the weight of high-risk operation gas alarm, can follow the operation personnel and remove, has improved high-risk operation gas monitoring system's flexibility, and loRa communication module low-power consumption, data transmission are stable, can set up the gas alarm in restricted space or shelter from in the adverse circumstances such as regional.
The gas alarm instrument can detect and analyze the gas in the high-risk operation area, generate a gas detection result and send the gas detection result to the mobile monitoring terminal. The mobile monitoring terminal transmits the gas alarm signal to the cloud system, and monitoring staff can inquire or retrieve the gas detection result of the high-risk operation area from the cloud system in real time to monitor and early warn the dangerous gas in real time. Through the LoRa wireless network, a high-risk operation mobile monitoring terminal can be connected with a plurality of high-risk operation gas alarms, so that simultaneous monitoring of a plurality of sampling positions is realized.
Referring to fig. 1, a first aspect of the present invention provides a high-risk operation gas monitoring method applied to a mobile monitoring terminal, wherein the mobile monitoring terminal performs data transmission with a plurality of gas alarms installed in a high-risk operation area through a LoRa wireless network, the high-risk operation gas monitoring method includes S101 generating corresponding data transmission instructions according to the data transmission requests and respectively transmitting the data transmission instructions to the gas alarms corresponding to the data transmission requests when the data transmission requests are received in a set period of time, wherein the data transmission requests include a transmission priority of a gas detection result, the data transmission instructions include a signal back-off time for transmitting the gas detection result, and S102 forwarding the gas detection result received from the gas alarms to a cloud system, wherein each gas alarm transmits the gas detection result according to the signal back-off time in the received data transmission instructions.
Specifically, in the embodiment of the invention, the gas alarm device collects gas samples in a high-risk operation area according to a received gas collection instruction, analyzes the collected gas samples, generates a gas detection result, determines the sending priority of the detection result, generates a corresponding data transmission request, then sends the data transmission request to the mobile monitoring terminal, the mobile monitoring terminal can know the occupation condition of a channel according to the number of the data transmission requests received by the gas alarm device in a set time period, determines the signal back-off time for sending the corresponding gas detection result according to the sending priority in the data transmission request, generates a corresponding data transmission instruction, and sends the corresponding data transmission instruction to the gas alarm device corresponding to the data transmission request respectively. After each gas alarm instrument receives the data transmission instruction, the gas detection results can be sent to the mobile monitoring terminal according to the signal back-off time in the data transmission instruction, so that the phenomenon that a plurality of gas alarm instruments send the gas detection results simultaneously to cause channel congestion is avoided, and the data transmission efficiency is improved. After the mobile monitoring terminal receives the gas detection result, the gas detection result is transmitted to the cloud system, and workers can monitor dangerous gas in the high-risk operation area through the cloud system.
According to the high-risk operation gas monitoring method provided by the invention, data collision can be avoided, the packet loss rate is reduced, the data transmission efficiency is improved, important data is sent preferentially, and high-risk operation regions are effectively monitored by the high-risk operation gas.
Further, the higher the level of the transmission priority, the shorter the duration of the signal back-off time.
Specifically, in the embodiment of the present invention, the higher the level of the transmission priority in the data transmission request, the higher the emergency degree of the gas detection result, and the shorter the duration of the signal back-off time corresponding to the data transmission request, the need to report to the cloud system as soon as possible for processing.
According to the high-risk operation gas monitoring method provided by the invention, the back-off time of the gas detection result can be determined according to the priority of the gas detection result, the higher the priority of the gas detection result is, the shorter the back-off time is, the gas detection result can be uploaded to a cloud system as soon as possible, and a worker can monitor a high-risk operation region according to the gas detection result, so that toxic and harmful gases can be conveniently treated, further diffusion of pollution is prevented, and support is provided for production environment safety supervision in a targeted manner.
Referring to fig. 2, a second aspect of the present invention provides a high-risk operation gas alarm method applied to a gas alarm installed in a high-risk operation area, where the high-risk operation gas alarm method includes determining that a gas acquisition instruction is acquired, acquiring a gas sample in the high-risk operation area, analyzing the acquired gas sample to generate a gas detection result, generating a corresponding data transmission request according to the gas detection result, S203, the data transmission request includes a transmission priority of the gas detection result, S204, transmitting the data transmission request to a mobile monitoring terminal disposed outside the high-risk operation area, S205, determining that a data transmission instruction fed back by the mobile monitoring terminal is received, transmitting the gas detection result to the mobile monitoring terminal according to a signal backoff time in the data transmission instruction, where the mobile monitoring terminal generates a corresponding data transmission instruction according to a data transmission request and transmits the data transmission instruction to the gas alarm corresponding to the data transmission request when receiving the data transmission request from a plurality of gas alarm devices in a set time period, and transmitting the data transmission instruction includes a signal backoff time.
Specifically, in the embodiment of the invention, after a gas acquisition instruction is received, a gas alarm acquires a gas sample in a high-risk operation area, analyzes the acquired gas sample, generates a gas detection result, determines the transmission priority of the detection result, generates a corresponding data transmission request, and then transmits the data transmission request to a mobile monitoring terminal. The mobile monitoring terminal can acquire the occupation condition of the channel according to the number of the data transmission requests received by the gas alarm in a set time period, determine the signal back-off time for transmitting the corresponding gas detection result according to the transmission priority, generate the corresponding data transmission instruction, and respectively transmit the data transmission instruction to the gas alarm corresponding to the data transmission request. After the gas alarm devices receive the data transmission instruction, the gas alarm devices can send gas detection results to the mobile monitoring terminal according to the signal back-off time in the data transmission instruction, so that the phenomenon that a plurality of gas alarm devices send the gas detection results simultaneously to cause channel congestion is avoided, and the data transmission efficiency is improved.
According to the high-risk operation gas alarm method provided by the invention, the data collision can be avoided, the packet loss rate is reduced, the data transmission efficiency is improved, important data is sent preferentially, and the high-risk operation area is effectively monitored.
Further, the more the number of the exceeding gas is, the higher the level of the sending priority is, wherein the number of the exceeding gas is the number of the gas with the current gas concentration larger than the corresponding set concentration in the gas sample, or the greater the maximum gas concentration exceeding rate is, the higher the level of the sending priority is, and the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the maximum gas concentration exceeding rate in the gas sample.
Specifically, in the embodiment of the present invention, the level of the transmission priority may be determined according to the number of the over-standard gas, which is the number of the gases having the current gas concentration greater than the corresponding set concentration in the gas sample. The gas alarm instrument stores a corresponding relation table of the number of the exceeding gas and the sending priority, and the higher the number of the exceeding gas, the higher the level of the sending priority. The gas alarm instrument detects the collected sample gas to determine the number of the exceeding gas of the sample gas, and the corresponding level of the sending priority can be obtained by searching from the corresponding relation table. In a possible implementation manner, a gas alarm instrument A and a gas alarm instrument B are respectively arranged in a high-risk operation area, the gas alarm instrument A samples nearby gas according to a gas collection instruction, analyzes a gas sample, detects the gas contained in the gas sample and the concentration of the gas, and if the detected gas sample contains benzene, propane, butane, pentane and xylene, the gas concentration of the benzene and the propane exceeds the corresponding set concentration, the number of out-of-standard gases of the gas sample is 2, and the corresponding sending priority is found to be four according to a corresponding relation table. The gas alarm instrument B samples nearby gas according to a gas acquisition instruction, analyzes a gas sample, detects the gas contained in the gas sample and the concentration of the gas, and searches the corresponding sending priority to be three-level according to a corresponding relation table if the detected gas sample contains butane, pentane, ethanol, methylene dichloride and acetone, wherein the gas concentration of the pentane, the ethanol and the methylene dichloride exceeds the corresponding set concentration, and the number of the out-of-standard gas of the gas sample is 3. The priority level of the gas detection result of the gas alarm B is greater than that of the gas detection result of the gas alarm a.
In the embodiment of the invention, the level of the sending priority can be determined according to the maximum gas concentration exceeding rate, wherein the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the maximum gas concentration exceeding rate in the gas sample. The gas alarm instrument stores a corresponding relation table of the maximum gas concentration exceeding rate and the sending priority, and the higher the maximum gas concentration exceeding rate is, the higher the level of the sending priority is. The gas alarm device detects the collected sample gas to determine the maximum gas concentration exceeding rate of the sample gas, and searches the corresponding relation table to obtain the corresponding transmission priority level. In a possible implementation manner, a gas alarm instrument A and a gas alarm instrument B are respectively arranged in a high-risk working area, the gas alarm instrument A samples nearby gas according to a gas collection instruction, analyzes the gas sample, detects the gas contained in the gas sample and the concentration exceeding rate of the gas, and if the detected gas sample contains benzene, propane, butane, pentane and xylene, the current gas concentration of the butane, pentane and xylene does not exceed the corresponding set gas concentration, the concentration exceeding rate of the benzene is 50%, the concentration exceeding rate of the propane is 100%, the gas with the maximum concentration exceeding rate of the gas in the gas sample is propane, the maximum concentration exceeding rate of the gas is 100%, and the corresponding sending priority is found to be four stages according to the corresponding relation table. The gas alarm instrument B samples nearby gas according to a gas acquisition instruction, analyzes the gas sample, detects the gas contained in the gas sample and the concentration exceeding rate of the gas, and searches the corresponding sending priority as a second level according to a corresponding relation table if the detected gas sample contains butane, pentane, ethanol, dichloromethane and acetone, wherein the current gas concentration of the butane, pentane, ethanol and dichloromethane does not exceed the corresponding set concentration, the gas concentration exceeding rate of the acetone is 200%, and the gas with the maximum gas concentration exceeding rate in the gas sample is acetone, and the maximum gas concentration exceeding rate is 200%. The priority level of the gas detection result of the gas alarm B is greater than that of the gas detection result of the gas alarm a.
According to the high-risk operation gas alarm method provided by the invention, the level of the sending priority can be determined according to the quantity of the exceeding standard gas or the exceeding standard rate of the maximum gas concentration, the signal back-off time can be more objectively and accurately determined, the gas detection result with serious pollution leakage can be sent preferentially, and the area with serious leakage can be monitored and processed preferentially.
Further, the method comprises the steps of repeatedly sending the gas detection result at a set frequency and a set number of times when the gas detection result fails to be sent, and stopping sending the gas detection result when the gas detection result fails to be sent repeatedly according to the set number of times.
Specifically, in the embodiment of the invention, when the gas detection result is successfully sent to the monitoring terminal, the monitoring terminal sends an identification code indicating that the gas detection result is successfully sent, if the gas alarm device does not receive the identification code within a set time, the gas alarm device indicates that the gas detection result is failed to send, in order to reduce the packet loss rate and increase the success rate of data transmission, the gas alarm device repeatedly sends the gas detection result at a set frequency and a set frequency, and after the set frequency, the gas alarm device still fails to send the gas detection result, and then the gas alarm device stops sending the gas detection result.
According to the high-risk operation gas alarm method provided by the invention, the packet loss rate can be reduced, the success rate of data transmission is improved, the cloud system is ensured to receive the gas detection result in time, and the high-risk operation region is effectively monitored.
Referring to fig. 3, a third aspect of the present invention provides a mobile monitoring terminal for performing data transmission with a plurality of gas alarms installed in a high-risk operation area through a LoRa wireless network, the mobile monitoring terminal comprising a generating unit 301 configured to generate, when data transmission requests from the plurality of gas alarms are received in a set period of time, corresponding data transmission instructions according to the data transmission requests and send the data transmission instructions to the gas alarms corresponding to the data transmission requests, respectively, where the data transmission requests include a sending priority of a gas detection result, the data transmission instructions include a signal back-off time for sending the gas detection result, and a transmitting unit 302 configured to forward the gas detection result received from the gas alarms to a cloud system, where each gas alarm sends the gas detection result according to the signal back-off time in the received data transmission instructions.
Further, the higher the level of the transmission priority, the shorter the duration of the signal back-off time.
Referring to fig. 4, a fourth aspect of the present invention provides a gas alarm installed in a high-risk operation area, the gas alarm including a gas acquisition unit 401 configured to determine that a gas acquisition instruction is acquired, acquire a gas sample in the high-risk operation area, a gas detection result generation unit 402 configured to analyze the acquired gas sample to generate a gas detection result, a data transmission request generation unit 403 configured to generate a corresponding data transmission request according to the gas detection result, the data transmission request including a transmission priority of the gas detection result, a communication unit 404 configured to transmit the data transmission request to a mobile monitoring terminal disposed outside the high-risk operation area, and determine that a data transmission instruction fed back by the mobile monitoring terminal is received, and transmit the gas detection result to the mobile monitoring terminal according to a 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 and transmits the data transmission request to the gas instrument corresponding to the data transmission request, respectively, when the data transmission request is received in a set period, and the mobile monitoring terminal transmits the data transmission instruction including the signal backoff time.
Further, the gas detection result comprises a sending priority of the gas detection result, and the generating of the data transmission request according to the gas detection result comprises the step of generating the data transmission request according to the sending priority.
Further, the more the number of the exceeding gas is, the higher the level of the sending priority is, wherein the number of the exceeding gas is the number of the gas with the current gas concentration larger than the corresponding set concentration in the gas sample, or the greater the maximum gas concentration exceeding rate is, the higher the level of the sending priority is, and the maximum gas exceeding rate is the gas concentration exceeding rate of the gas with the maximum gas concentration exceeding rate in the gas sample.
Further, the communication unit is further configured to repeat transmission of the gas detection result at a set frequency and a set number of times in case the gas detection result fails to be transmitted, and stop transmission of the gas detection result in case the gas detection result fails to be transmitted repeatedly at the set number of times.
Referring to fig. 5, a fifth aspect of the present invention provides a high-risk operation gas monitoring system, where the high-risk operation gas monitoring system includes a cloud system, the mobile monitoring terminal and the gas alarm device described above, a transmission unit of the mobile monitoring terminal performs data transmission with a communication unit of the gas alarm device through a LoRa wireless network, and a transmission unit of the mobile monitoring terminal performs data transmission with the cloud system through a 4G and WIFI wireless network.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.