Gate control system and method

Abstract

The invention provides a gate control system and method, and relates to the technical field of water conservancy equipment.The system comprises a first gas detection module, a control module and a gate control module, the first gas detection module is used for detecting the concentration of combustible gas in a gate chamber and sending detected first concentration data to the control module; the control module is used for sending a first control signal to the gate control module when judging that the current concentration of the combustible gas in the gate chamber exceeds a first safety threshold value according to the first concentration data in response to each opening of the gate; under the condition that the current concentration of the combustible gas in the gate chamber does not exceed the first safety threshold value, a second control signal is sent to the gate control module; the gate control module is used for responding to the first control signal and controlling the gate to stop opening; or the second control signal is responded, and the gate is controlled to be continuously opened. According to the invention, the risk of explosion or fire caused by too high gas concentration is avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of water conservancy equipment, and particularly to a gate control system and method. Background Art

[0002] In many dam pivot buildings, the design of flood discharge / sediment flushing tunnels usually includes emergency maintenance gates and working gates, which are connected by a long pressure tunnel. Under normal conditions, the emergency maintenance gate remains open for a long time, while the working gate remains closed for a long time and is only opened during flood discharge or sediment flushing. Since the working gate is closed all year round, the pressure tunnel section of the flood discharge / sediment flushing tunnel is immersed in water all year round. Driven by the water flow, organic matters such as dead branches and fallen leaves are likely to accumulate in the silt at the bottom of the tunnel. Methane and other combustible gases are generated during the corruption process of these organic matters. These gases are easily disturbed by air currents when the gate is opened, and thus are quickly released. With the accumulation of gases, when the concentration of methane and other combustible gases reaches a certain level in a closed environment, explosive combustion is extremely likely to occur.

[0003] Related technologies have not fully considered the potential safety hazards of explosion caused by combustible gases. Especially when the gas concentration accumulates seriously, it is impossible to effectively respond to the real-time change of gas concentration, resulting in the potential explosion risk not being controlled in time. Summary of the Invention

[0004] Embodiments of the present disclosure provide a gate control system and method, aiming to solve the problems existing in the above background art.

[0005] To solve the above technical problems, the present disclosure is implemented as follows: In a first aspect, embodiments of the present disclosure provide a gate control system, which is applied to a gate chamber and an operation chamber adjacent to the gate chamber, and includes: a first gas detection module, a control module, and a gate control module. The first gas detection module is installed on the side of the gate chamber close to the operation chamber; the first gas detection module is electrically connected to the input end of the control module, the gate control module is electrically connected to the output end of the control module, and the gate control module is connected to the gate of the gate chamber. The first gas detection module is configured to detect the concentration of combustible gas in the gate chamber and send the detected first concentration data to the control module; The control module is configured to, in response to each opening of the gate, when judging that the current concentration of combustible gas in the gate chamber exceeds a preset first safety threshold according to the first concentration data, send a first control signal to the gate control module; and, when the current concentration of combustible gas in the gate chamber does not exceed the first safety threshold, send a second control signal to the gate control module; The gate control module is used to control the gate to stop opening in response to the first control signal; or to control the gate to continue opening in response to the second control signal; Wherein, the angle at which the gate is opened each time is smaller than the maximum angle when the gate is fully opened.

[0006] Optionally, the system further comprises a ventilation fan and a ventilation fan control module, wherein the ventilation fan is installed in the gate chamber on a side close to the operating chamber; the ventilation fan control module is electrically connected to an output end of the control module; The control module is used to send a third control signal to the gate control module when it is determined based on the first concentration data that the current concentration of the combustible gas in the gate chamber exceeds a second safety threshold, and the second safety threshold is less than the first safety threshold; The ventilation fan control module is used to respond to the third control signal and turn on the ventilation fan.

[0007] Optionally, the control module is used to determine the increment of the concentration of the combustible gas in the gate chamber according to the first concentration data; and send a fourth control signal to the gate control module every time the current concentration of the combustible gas in the gate chamber increases by a preset gradient value; The ventilation fan control module is used to control the ventilation fan to increase a preset ventilation power in response to the fourth control signal.

[0008] Optionally, the system includes a first ventilation path, the first ventilation path extends along the gate chamber to a side away from the operating chamber, a first wind direction detection module is installed on the first ventilation path, and the first wind direction detection module is electrically connected to an input end of the control module; The first wind direction detection module is used to detect the wind direction of the combustible gas in the gate chamber and send the detected first wind direction data to the control module; The control module is used for sending a first control signal to the gate control module in response to each opening of the gate, based on the first wind direction data, when it is determined that the combustible gas in the gate chamber does not flow along the first ventilation path; and sending the second control signal to the gate control module when it is determined that the combustible gas in the gate chamber flows along the first ventilation path.

[0009] Optionally, the system includes a second ventilation path, the second ventilation path extends outside the side wall of the operating room, a second wind direction detection module is installed on the second ventilation path, and the second wind direction detection module is electrically connected to the input end of the control module; The second wind direction detection module is used to detect the wind direction of the combustible gas in the operating room and send the detected second wind direction data to the control module; The control module is used to respond to each opening of the gate and, based on the second wind direction data, send a first control signal to the gate control module when it is determined that the combustible gas in the operating room does not flow along the second ventilation path; and send a second control signal to the gate control module when it is determined that the combustible gas in the operating room flows along the second ventilation path.

[0010] Optionally, the system further comprises a second gas detection module, which is installed at a side wall of the operating room; the second gas detection module is electrically connected to an input end of the control module; The second gas detection module is used to detect the concentration of the combustible gas in the operating room and send the detected second concentration data to the control module; The control module is used to send a first control signal to the gate control module in response to each opening of the gate and when it is determined based on the second concentration data that the current concentration of the combustible gas in the operating room exceeds a preset third safety threshold; and send a second control signal to the gate control module when the current concentration of the combustible gas in the operating room does not exceed the third safety threshold.

[0011] Optionally, the system further comprises an alarm light module and a display module, wherein the alarm light module and the display module are electrically connected to the first gas detection module and the first wind direction detection module respectively; The alarm light module is used to determine the current safety level of the gate chamber according to the first concentration data and the first wind direction data; and control the corresponding alarm light to turn on according to the current safety level of the gate chamber; The display module is used to display the concentration and wind direction of the combustible gas in different areas of the gate chamber and the opening status of the gate in real time on a visual interface according to the first concentration data and the first wind direction data.

[0012] In a second aspect, an embodiment of the present disclosure provides a gate control method, which is applied to a gate control system as described in the first aspect, and the method includes: Detecting the concentration of combustible gas in the gate chamber to obtain first detected concentration data; In response to each opening of the gate, judging whether the current concentration of the combustible gas in the gate chamber exceeds a preset first safety threshold value according to the first concentration data; When the current concentration of the combustible gas in the gate chamber exceeds the first safety threshold, the gate is controlled to stop opening; and when the current concentration of the combustible gas in the gate chamber does not exceed the first safety threshold, the gate is controlled to continue opening; wherein the angle at which the gate is opened each time is smaller than the maximum angle when the gate is fully open.

[0013] Optionally, the method further comprises: Determining the current concentration of the combustible gas in the gate chamber according to the first concentration data; When the current concentration of the combustible gas in the gate chamber exceeds a preset second safety threshold, the ventilation fan is turned on, and the second safety threshold is less than the first safety threshold.

[0014] Optionally, the method further comprises: determining the increment of the concentration of the combustible gas in the gate chamber according to the first concentration data; When the current concentration of the combustible gas in the gate chamber increases by a preset gradient value, the ventilation fan is controlled to increase the preset ventilation power. The technical solution provided by the embodiments of the present disclosure brings at least the following beneficial effects: The present invention detects the concentration of combustible gas in the gate chamber in real time and intelligently controls the gate opening process according to the concentration data. When the concentration exceeds the preset safety threshold, the control module can send a control signal in time to prevent the gate from continuing to open, thereby avoiding the risk of explosion or fire caused by excessive gas concentration. The gate is gradually fully opened to the maximum angle, effectively reducing the possibility of rapid accumulation of gas. It can not only ensure the normal operation of the gate, but also respond to changes in gas concentration in real time, intelligently adjust the gate opening degree, and ensure that the gate opening is controlled within a safe range, thereby effectively reducing safety hazards and reducing the possibility of catastrophic accidents caused by combustible gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a cross-sectional schematic diagram of a flood discharge and sand flushing tunnel in the related art; Figure 2 is a cross-sectional schematic diagram of a gate control system provided by an embodiment of the present disclosure; Figure 3is a cross-sectional schematic diagram of another gate control system provided by an embodiment of the present disclosure; Figure 4 It is a schematic diagram of a ventilation path of a combustible gas in a gate control system provided by an embodiment of the present disclosure; Figure 5 It is a schematic diagram of the steps of a gate control method provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0018] In the operation of water conservancy facilities such as dams, flood discharge / sand flushing tunnels, gates are one of the key control devices. Especially in the process of flood discharge or sand flushing, the working gates need to be opened according to the predetermined process. Figure 1 This is a cross-sectional schematic diagram of a flood discharge and sand flushing tunnel in the related art. Figure 1 As shown, the working arc gate refers to the space where the gate is located. Here, the gate is used to control the entry or outflow of water. The working arc gate adjusts the water level and flow by controlling the opening and closing. However, since the pressureless tunnel section is a part of the tunnel without water pressure, the flow of gas here is relatively free, but it is also easy to accumulate sediments and combustible gases. Over time, these sediments will decay and produce combustible gases such as methane. The accumulation of these combustible gases poses a threat to safety, especially near the working gate chamber located above the working arc gate. Each time the working arc gate is opened, these combustible gases may be disturbed by the airflow and released quickly, causing the gas concentration to rise sharply in a short period of time. If the concentration of combustible gas reaches the explosion limit, it is very likely to cause an explosion accident, bringing serious safety hazards. The core concept of the present disclosure is to monitor the concentration of combustible gas in the gate chamber in real time, and dynamically adjust the gate opening process in combination with the control system to ensure that the operation is carried out within the safe range of gas concentration, thereby avoiding the risk of explosion caused by gas accumulation.

[0019] Figure 2 is a cross-sectional schematic diagram of a gate control system provided by an embodiment of the present disclosure, such as Figure 2As shown, the gate control system is applied to a gate chamber 101 and an operating room 102 adjacent to the gate chamber, and includes: a first gas detection module 1011, a control module 1021 and a gate control module 1022, wherein the first gas detection module 1011 is installed on the side of the gate chamber 101 close to the operating room 102; the first gas detection module 1011 is electrically connected to the input end of the control module 1021, the gate control module 1022 is electrically connected to the output end of the control module 1021, and the gate control module 1022 is connected to the gate 1012 of the gate chamber 101.

[0020] The gate room is the area where the gate is actually installed and the gate start and stop operations are performed. The gate room is the main area where combustible gas accumulates, so key gas monitoring and control are required. The operation room is the main operation area of ​​the control system, where the operator performs gate control and real-time monitoring. The operation room contains control modules and system interfaces related to gate control.

[0021] The first gas detection module is installed on the side of the gate chamber close to the operating room, so that the detection module can monitor the concentration changes of the combustible gas transmitted from the gate chamber in real time. The first gas detection module transmits the gas monitoring data to the input end of the control module through electrical connection. The control module transmits the instruction to the output end of the gate control module through electrical connection to control the opening and closing operation of the gate. The gate control module is physically connected to the gate in the gate chamber, and the control module adjusts the opening degree and speed of the gate through electrical signals.

[0022] The first gas detection module 1011 is used to detect the concentration of the combustible gas in the gate chamber 101 and send the detected first concentration data to the control module 1021 .

[0023] The combustible gas may be methane, and correspondingly, the first gas detection module may be a methane concentration sensor. Since the density of methane-based combustible gases is smaller than that of air, they will diffuse into the upper space of the gate chamber. In this embodiment, the first gas detection module is installed at the top of the gate chamber or near the channel outlet to facilitate the detection of combustible gas leakage.

[0024] The first gas detection module continuously monitors the concentration of combustible gas in the gate chamber. Assuming that the current methane concentration in the gate chamber is 1.5%, the gas detection module will detect the first concentration data in real time and record it and transmit it to the control module, which can be transmitted via cables and wireless networks.

[0025] The control module 1021 is used to respond to each opening of the gate 1012 and, based on the first concentration data, send a first control signal to the gate control module 1022 when it is determined that the current concentration of the combustible gas in the gate chamber 101 exceeds a preset first safety threshold; and send a second control signal to the gate control module 1022 when the current concentration of the combustible gas in the gate chamber 101 does not exceed the first safety threshold.

[0026] The control module is responsible for processing the first concentration data from the first gas detection module, and decides whether to continue opening the gate based on the first concentration data, which is equivalent to evaluating the risk in the current safety assessment stage. The control module analyzes the first concentration data to decide whether to send a control signal to the gate control module, thereby adjusting the opening degree and speed of the gate to ensure the safety of the operation. The first concentration data is the real-time data of the first gas detection module, reflecting the concentration of the combustible gas in the gate chamber. The first safety threshold is a pre-set concentration threshold of the combustible gas, which can be set according to safety standards and engineering requirements, and represents the maximum upper limit of the concentration of the combustible gas that can be tolerated in the gate chamber. Assuming that the first safety threshold is 2.0%, if the concentration of the combustible gas in the gate chamber exceeds 2.0%, there is a potential risk of explosion or fire, and emergency measures need to be taken. In this case, the control module sends a first control signal to the gate control module to instruct the gate to stop opening, in order to avoid further increase in gas concentration and ensure the safety of gate operators and equipment. On the contrary, when the control module determines that the current gas concentration is within the safe range, that is, the current concentration of the combustible gas in the gate chamber does not exceed the first safety threshold, it is determined that no explosion or fire will be caused, so the gate operation can continue. In this case, the control module sends a second control signal to the gate control module to allow the gate to continue to open normally. The second control signal will instruct the gate to continue to perform tasks at the set speed and opening degree. At the same time, the control module will continue to monitor the gas concentration in real time to ensure that it is always safe during the gate opening process.

[0027] The gate control module 1022 is used to respond to the first control signal to control the gate 1012 to stop opening; or, respond to the second control signal to control the gate 1012 to continue opening; wherein the angle of each opening of the gate 1012 is smaller than the maximum angle when the gate is fully open.

[0028] The gate control module is the part that actually operates the gate. It is used to receive signals from the control module and control the opening and closing of the gate according to different instructions of the signal. After receiving the first control signal, the gate control module immediately takes action to stop the opening of the gate. Specifically, the opening action of the gate will be suspended to prevent the gas concentration from continuing to rise and ensure the safety of the operating environment. After receiving the second control signal, the gate control module will continue to open the gate. The gate will continue to open at the original rate and angle until it reaches the set angle. The angle of each opening is less than the maximum angle of the gate's full opening (assuming that the maximum angle is 100%). The specific opening angle each time can be set to 10% to 30% of the maximum angle (adjusted according to actual needs). For example, if the maximum opening angle of the gate is 90°, then the angle of each opening may be 9° to 27°, ensuring that the gate will not be fully opened each time it is opened to avoid a large amount of gas leakage. The angle of each opening can be the same or different, depending on the specific control strategy and actual needs. If in some cases, it is desired to discharge the gas gradually and evenly, the opening angle each time is fixed; in other cases, the opening angle is dynamically adjusted according to the changes in the concentration of the combustible gas. In this case, the opening angle each time is different to ensure that the gate opening process is consistent with the concentration of the combustible gas.

[0029] It is understandable that this embodiment gradually opens the gate in multiple stages to avoid danger during the gate opening process. Each opening stage of the gate is accompanied by real-time detection of gas concentration, and a safety assessment is performed after the gas concentration monitoring. Only when the combustible gas environment in the gate chamber passes the safety assessment can the next stage of monitoring, safety assessment and gate start and stop control be entered. In other words, the gate is not fully opened at one time, but is opened step by step and gradually. By opening the gate in small amplitude each time, the angle of each gate opening is less than the maximum angle when fully opened to limit the intensity of the airflow. It is equivalent to gradually opening the gate at each safety assessment stage until the maximum angle. The purpose of this is to avoid rapid diffusion of gas. If the gate is fully opened at one time, a large amount of combustible gas may be instantly exposed to the outside world, causing danger. Gradual opening can reduce this risk. The gradual opening of the gate can also better monitor and control gas leakage, ensuring that a large amount of methane and other combustible gases will not leak due to the full opening of the gate.

[0030] The present invention detects the concentration of combustible gas in the gate chamber in real time and intelligently controls the gate opening process according to the concentration data. When the concentration exceeds the preset safety threshold, the control module can send a control signal in time to prevent the gate from continuing to open, thereby avoiding the risk of explosion or fire caused by excessive gas concentration. The gate is gradually fully opened to the maximum angle, effectively reducing the possibility of rapid accumulation of gas. It can not only ensure the normal operation of the gate, but also respond to changes in gas concentration in real time, intelligently adjust the gate opening degree, and ensure that the gate opening is controlled within a safe range, thereby effectively reducing safety hazards and reducing the possibility of catastrophic accidents caused by combustible gas.

[0031] In an optional embodiment, the system also includes a ventilation fan 1013 and a ventilation fan control module 1023, and the ventilation fan 1013 is installed in the gate chamber 101 near the operating room 102; the ventilation fan control module 1023 is electrically connected to the output end of the control module 1021.

[0032] Figure 3 is a cross-sectional schematic diagram of another gate control system provided by the embodiment of the present disclosure, see Figure 3 The ventilation fan is installed on the side of the gate chamber close to the operating room to ensure that the ventilation fan effectively discharges the gas in the gate chamber to the outside during ventilation to avoid the accumulation of gas concentration in the gate chamber. The ventilation fan discharges the combustible gas (such as methane) in the gate chamber through air circulation, and introduces fresh air from the outside. This helps to reduce the concentration of combustible gas in the gate chamber, especially when the gas concentration is too high. The ventilation fan can effectively reduce the risk of gas accumulation, thereby providing a safer operating environment for the opening of the gate. The ventilation fan control module is electrically connected to the output end of the control module to receive instructions from the control module and control the start and stop and operating status of the ventilation fan. The control module decides whether to start or stop the ventilation fan based on real-time gas concentration data, gate operation conditions and safety assessment results to ensure the safe environment of the gate chamber.

[0033] The control module 1021 is used to send a third control signal to the gate control module 1022 when it is determined based on the first concentration data that the current concentration of the combustible gas in the gate chamber 101 exceeds a second safety threshold, and the second safety threshold is less than the first safety threshold.

[0034] The second safety threshold is a gas concentration limit lower than the first safety threshold. As mentioned above, the first safety threshold is used to indicate the maximum combustible gas concentration allowed in the gate chamber, while the second safety threshold is set within the safety range defined by the first safety threshold, indicating that the system has entered a more serious alert state, but has not yet reached an extreme danger level. For example, the first safety threshold is set to 2.0% (indicating that the gas concentration reaches or exceeds 2.0%, and there is a risk of explosion or fire). The second safety threshold is set to 0.5% (indicating that when the gas concentration reaches 0.5%, although it has not reached the danger threshold, it has exceeded the conventional safety range and further prevention and control measures must be taken). The third control signal is a signal sent by the control module to the ventilation fan control module when it is determined that the gas concentration exceeds the second safety threshold, to instruct the ventilation fan to turn on.

[0035] The ventilation fan control module 1023 is used to respond to the third control signal and turn on the ventilation fan 1013.

[0036] After the ventilation fan control module receives the third control signal, the ventilation power of the ventilation fan is controlled by the ventilation fan control module. The ventilation fan starts to run and generates airflow. By guiding the air circulation, the combustible gas in the gate chamber is discharged to the outside, and fresh air is introduced from the outside. The concentration of combustible gas in the gate chamber is effectively reduced, helping to improve ventilation conditions. With the start-up and continuous operation of the ventilation fan, the concentration of combustible gas in the gate chamber will be effectively diluted and reduced. Especially when the gas concentration is too high, the ventilation fan can reduce the risk of gas accumulation, thereby ensuring a safe environment during gate operation.

[0037] In an optional embodiment, the control module 1021 is used to determine the increase in the concentration of the combustible gas in the gate chamber 101 based on the first concentration data; and send a fourth control signal to the gate control module 1022 every time the current concentration of the combustible gas in the gate chamber 101 increases by a preset gradient value.

[0038] The control module analyzes the first concentration data and monitors the increment of the gas concentration. The increment of the gas concentration refers to the change in the concentration value of the combustible gas measured in real time relative to the previous concentration value. The control module determines whether further control measures need to be taken based on the increment of the combustible gas concentration. Specifically, if the gas concentration in the gate chamber increases by a preset gradient value (such as 5%), the sending of the fourth control signal is triggered.

[0039] The ventilation fan control module 1023 is used to control the ventilation fan 1013 to increase a preset ventilation power in response to the fourth control signal.

[0040] After receiving the fourth control signal, the ventilation power of the ventilation fan is controlled by the ventilation fan control module, thereby improving the exhaust efficiency of the fan. After the ventilation fan increases its power, it will increase the air flow, discharge more combustible gas, and introduce more fresh air from the outside. If the gas concentration rises rapidly and the fan power is not increased in time, the gas concentration may continue to rise and enter the danger zone. Therefore, the purpose of increasing the ventilation power is to increase the air circulation speed, thereby quickly reducing the combustible gas concentration in the gate chamber to cope with the rapid increase in the concentration of combustible gas.

[0041] In an optional embodiment, the system includes a first ventilation path, which extends along the gate chamber 101 toward a side away from the operating chamber 102, and a first wind direction detection module 1014 is installed on the first ventilation path, and the first wind direction detection module 1014 is electrically connected to the input end of the control module 1021.

[0042] Figure 4 This is a schematic diagram of the ventilation path of the combustible gas of a gate control system provided by the embodiment of the present disclosure, please refer to Figure 4 The first ventilation path extends from the gate chamber to the side away from the operating room, and its direction is from the gate chamber to the outside of the gate chamber via the flood discharge sand flushing tunnel. For example, one side wall of the gate chamber is an inclined side wall, and the inclined side wall is connected to the flood discharge sand flushing tunnel. Then, the first wind direction detection module is installed on the inclined side wall to form a first ventilation path. The first wind direction detection module is used to detect the wind direction of the airflow in the gate chamber, and then determine the flow direction of the combustible gas.

[0043] The first wind direction detection module 1014 is used to detect the wind direction of the combustible gas in the gate chamber 101 and send the detected first wind direction data to the control module 1021 .

[0044] The first wind direction detection module is designed to monitor whether the gas flows along the predetermined ventilation path. The first wind direction detection module monitors the movement of gas in the gate chamber in real time through sensors, anemometers or other airflow sensing devices, collects first wind direction data, and analyzes the gas flow to further determine whether the gate can be opened safely.

[0045] The control module 1021 is used to respond to each opening of the gate 1012, and according to the first wind direction data, send a first control signal to the gate control module 1022 when it is determined that the combustible gas in the gate chamber 101 does not flow along the first ventilation path; and send the second control signal to the gate control module 1022 when it is determined that the combustible gas in the gate chamber 101 flows along the first ventilation path.

[0046] The control module determines the flow state of the gas based on the wind direction data and makes reasonable operational decisions. Specifically, if the first wind direction data indicates that the combustible gas does not flow along the first ventilation path, it means that the gas may accumulate in other locations in the gate chamber, posing a certain safety risk. In this case, the control module instructs the gate control module to suspend opening the gate or delay the gate opening operation by sending a first control signal. Because the gas does not flow along the correct ventilation path, opening the gate may cause the gas to spread to other areas, such as the operating room, thereby increasing the risk of explosion and injury to operators.

[0047] If the first wind direction data indicates that the combustible gas has flowed smoothly along the first ventilation path, it means that the flow direction of the gas meets the ventilation requirements and the exhaust path of the system is effective and safe. In this case, the control module instructs the gate control module to open the gate by sending a second control signal. Because the gas flows along the ventilation path, it will not cause safety risks to the gate opening, but can help quickly discharge the combustible gas in the gate chamber and reduce the gas concentration.

[0048] In an optional embodiment, the system includes a second ventilation path, which extends along the outside of the side wall of the operating room. A second wind direction detection module 1024 is installed on the second ventilation path, and the second wind direction detection module 1024 is electrically connected to the input end of the control module 1021.

[0049] See also Figure 4 The second ventilation path extends along the side wall of the operating room. Its function is to provide an effective exhaust channel for the combustible gas in the operating room, help discharge the gas to the outside, and avoid the accumulation of combustible gas in the operating room. Its direction is from the outside of the operating room through the ventilation hole to the outside of the operating room.

[0050] The second wind direction detection module 1024 is used to detect the wind direction of the combustible gas in the operating room 102 and send the detected second wind direction data to the control module 1021 .

[0051] See also Figure 3 The second wind direction detection module is installed on the second ventilation path and is specifically used to detect the wind direction of the combustible gas in the operating room. The second wind direction data is the wind direction information collected by the second wind direction detection module, which reflects the flow direction of the combustible gas in the operating room. The control module determines the gas flow situation in the operating room in real time by receiving the second wind direction data.

[0052] The control module 1021 is used to respond to each opening of the gate 1012, and according to the second wind direction data, send a first control signal to the gate control module 1022 when it is determined that the combustible gas in the operating room 102 does not flow along the second ventilation path; and send a second control signal to the gate control module 1022 when it is determined that the combustible gas in the operating room flows along the second ventilation path.

[0053] The control module determines the flow state of the gas based on the wind direction data and makes reasonable operational decisions. Specifically, if the second wind direction detection module detects that the combustible gas in the operating room does not flow along the second ventilation path, that is, the gas may accumulate in other locations in the operating room, or the gas flow direction is abnormal, the control module will think that the current ventilation is insufficient and there is a safety hazard. In this case, the control module sends a first control signal to the gate control module to prevent the gate from opening, so as to avoid opening the gate when the gas flow does not meet the ventilation requirements, thereby causing the risk of gas leakage or accumulation. If the second wind direction detection module detects that the combustible gas in the operating room flows smoothly along the second ventilation path, it means that the gas flow direction meets the predetermined ventilation design of the second ventilation path, and the gas can be discharged through the correct ventilation path. In this case, the control module sends a second control signal to the gate control module to allow the gate to open.

[0054] In an optional embodiment, the system further includes a second gas detection module 1025 , which is installed at a side wall of the operating chamber 102 ; the second gas detection module is electrically connected to an input end of the control module 1021 .

[0055] The second gas detection module 1025 is used to detect the concentration of the combustible gas in the operating room 102 and send the detected second concentration data to the control module 1021 .

[0056] See also Figure 3 The second gas detection module is installed on the side wall of the operating room, and its working principle is similar to that of the first gas detection module. The second gas detection module is used to monitor the concentration of combustible gas in the operating room in real time, and send the real-time measured second concentration data to the control module.

[0057] The control module 1021 is used to send a first control signal to the gate control module 1022 in response to each opening of the gate 1012 and when it is determined based on the second concentration data that the current concentration of the combustible gas in the operating room 102 exceeds a preset third safety threshold; and send a second control signal to the gate control module when the current concentration of the combustible gas in the operating room does not exceed the third safety threshold.

[0058] The control module determines whether the concentration of the combustible gas in the operating room exceeds the preset third safety threshold according to the received second concentration data. The third safety threshold can be less than the first safety threshold, because the safety level of the operating room is higher than that of the gate room. In order to protect the operator, the upper limit can be appropriately lowered. For details, refer to the explosion limits LEL (Lower Explosive Limit) and UEL (Upper Explosive Limit) of the combustible gas. If the second gas detection module detects that the gas concentration in the operating room exceeds the preset third safety threshold, it means that the concentration of the combustible gas has exceeded the safety range and there is a risk of explosion or fire. In this case, the control module sends a first control signal to the gate control module, requiring it to suspend the opening of the gate. If the gas concentration in the operating room is lower than or equal to the third safety threshold, it means that the gas concentration is within the safety range and there is no obvious safety risk in the operating room. In this case, the control module sends a second control signal to the gate control module to allow the gate to open.

[0059] In an optional implementation, the system further includes an alarm light module 1026 and a display module 1027, and the alarm light module 1026 and the display module 1027 are electrically connected to the first gas detection module 1011 and the first wind direction detection module 1014, respectively.

[0060] The alarm light module 1026 is used to determine the current safety level of the gate chamber 101 according to the first concentration data and the first wind direction data; and control the corresponding alarm light to turn on according to the current safety level of the gate chamber 101.

[0061] The alarm light module receives real-time data from the first gas detection module and the first wind direction detection module through electrical connection with the first gas detection module and the first wind direction detection module, and then determines the safety level in the gate room. If the gas concentration is too high and the wind direction is unfavorable (such as low wind speed or wind direction toward the dangerous area), it is judged as a high risk level. If the gas concentration is low and the wind direction is favorable (such as the gas can be discharged quickly), it is judged as a low risk or safety level. According to the safety level of the gate room, the alarm light module controls the corresponding alarm light to turn on. Different safety levels correspond to different alarm light states, helping operators and staff to quickly identify the current safety situation. The color and flashing mode of the alarm light vary according to the risk level. For example, green or blue lights indicate a safe state, normal gas concentration in the operating room, and appropriate wind direction. Yellow or orange lights indicate a warning state, high gas concentration, and unfavorable wind direction. Red lights indicate a dangerous state, excessive gas concentration, unfavorable wind direction, or a great risk of gas leakage.

[0062] The display module 1027 is used to display the concentration and wind direction of the combustible gas in different areas of the gate chamber 101 and the opening status of the gate 1012 in real time on a visual interface according to the first concentration data and the first wind direction data.

[0063] The display module and the alarm light module complement each other, providing operators and monitoring personnel with a clear system status interface through the visualization of real-time data. The display module receives real-time data from the first gas detection module and the first wind direction detection module, and displays the following on the visualization interface: the concentration of combustible gas in different areas, wind direction data, and gate status. The display module not only displays the gas concentration and wind direction data, but also graphically displays the real-time safety status of each area of ​​the gate room. The changes in gas concentration in different areas can be represented in the form of a thermal map or a concentration distribution map. Areas with higher gas concentrations are marked in red or orange, and areas with lower gas concentrations are represented in green. The wind direction can be represented in the form of a wind direction map, and the wind direction and wind speed are displayed by arrows or wind speed icons to help staff understand whether the gas can be discharged quickly or whether there is a risk of diffusion. The opening state of the gate can be represented in the form of a status icon, for example, an icon of the gate open or closed, to ensure that the operator can quickly confirm the current operating status visually.

[0064] Figure 5 is a schematic diagram of the steps of a gate control method provided by an embodiment of the present disclosure, the method is applied to the gate control system as described above, see Figure 5 , the method comprising: Step S201, detecting the concentration of combustible gas in the gate chamber to obtain first detected concentration data.

[0065] The gas detection device (such as the aforementioned first gas detection module) detects the combustible gas concentration in the gate chamber in real time, and converts the detection result into the first concentration data. The gas detection device samples the air in the gate chamber to detect the concentration of the combustible gas. Based on the sampling results, the corresponding first concentration data is generated, which can be expressed as a numerical value to represent the size of the gas concentration (such as ppm, %LEL).

[0066] Step S202, in response to each opening of the gate, judging whether the current concentration of the combustible gas in the gate chamber exceeds a preset first safety threshold value according to the first concentration data.

[0067] Each time the gate is opened, it is determined whether the combustible gas concentration in the gate chamber exceeds the preset first safety threshold according to the first concentration data obtained in step S201. Specifically, the first concentration data is compared with the first safety threshold, which is equivalent to evaluating the risk in the current safety assessment stage. Exceeding the first safety threshold indicates that the gas concentration is too high and there is a potential risk of explosion or fire.

[0068] Step S203, when the current concentration of the combustible gas in the gate chamber exceeds the first safety threshold, control the gate to stop opening; and when the current concentration of the combustible gas in the gate chamber does not exceed the first safety threshold, control the gate to continue opening; wherein the angle of the gate opening each time is smaller than the maximum angle when the gate is fully open.

[0069] If the gas concentration is found to exceed the preset first safety threshold, the gate will stop opening further to avoid further opening of the gate when the gas concentration is too high, which may cause gas leakage or diffusion in a wider range, thereby increasing the risk of explosion or fire. On the contrary, if the gas concentration does not exceed the first safety threshold, the gate is allowed to continue opening and enter the next safety assessment stage. The gate is opened at a smaller angle each time than the maximum angle when fully open, which is equivalent to gradually opening the gate at each safety assessment stage until the maximum angle.

[0070] In an optional embodiment, the method further includes: Step S301, determining the current concentration of the combustible gas in the gate chamber according to the first concentration data.

[0071] The second safety threshold is a gas concentration limit lower than the first safety threshold. As mentioned above, the first safety threshold is used to indicate the maximum combustible gas concentration allowed in the gate chamber, while the second safety threshold is set within the safety range defined by the first safety threshold, indicating that the system has entered a more serious alert state, but has not yet reached an extreme danger level. For example, the first safety threshold is set to 2.0% (indicating that the gas concentration reaches or exceeds 2.0%, and there is a risk of explosion or fire). The second safety threshold is set to 0.5% (indicating that when the gas concentration reaches 0.5%, although it has not reached the danger threshold, it has exceeded the conventional safety range and further prevention and control measures must be taken). The third control signal is a signal sent by the control module to the ventilation fan control module when it is determined that the gas concentration exceeds the second safety threshold, to instruct the ventilation fan to turn on.

[0072] Step S302, when the current concentration of the combustible gas in the gate chamber exceeds a preset second safety threshold, turning on the ventilation fan, and the second safety threshold is less than the first safety threshold.

[0073] In response to the third control signal, the ventilation fan module corresponding to the ventilation fan starts the ventilation fan through a control circuit, a relay, a sensor or other control interface. The ventilation fan starts to run and generates airflow. By guiding the air circulation, the combustible gas in the gate chamber is discharged to the outside, and fresh air is introduced from the outside. The concentration of combustible gas in the gate chamber is effectively reduced, helping to improve ventilation conditions. With the start-up and continuous operation of the ventilation fan, the concentration of combustible gas in the gate chamber will be effectively diluted and reduced. Especially when the gas concentration is too high, the ventilation fan can reduce the risk of gas accumulation, thereby ensuring a safe environment during gate operation.

[0074] In an optional embodiment, the method further includes: Step S401: determining the increase in the concentration of the combustible gas in the gate chamber according to the first concentration data.

[0075] The first concentration data is analyzed to monitor the increment of gas concentration. The increment of gas concentration refers to the change in the concentration value of the combustible gas measured in real time relative to the previous concentration value. The control module determines whether further control measures need to be taken based on the increment of the combustible gas concentration. Specifically, assume that the combustible gas is methane. In the initial state, the methane concentration is 0% (safe concentration). The initial gate opening is set to 0%. When the methane concentration reaches 0.5%, according to the set rules, the ventilation fan is immediately started to start discharging methane. At this time, the gate opening may still be 0%, but as the concentration increment changes, the gate will gradually open. For every 0.5% increase in methane concentration (that is, an increment of 0.5%), the fan power increases by one level. In this example, when the concentration increases from 0.5% to 1.0%, the ventilation fan power increases by one level. During this process, the gate opening may increase by 10% (assuming that the first stage has been entered). The gate is gradually opened to ensure that methane is fully ventilated and discharged. When the methane concentration increases from 1.0% to 1.5%, the ventilation fan power is increased by one level again to improve air circulation and exhaust efficiency. The gate continues to open by 10% after the safety assessment, gradually reaching a higher opening degree. When the methane concentration reaches 2.0%, according to the control strategy described above, the gate is suspended from opening. At this time, the safety assessment indicates that the current concentration of combustible gas is too high, and the gate opening must be suspended to avoid the risk of explosion. At this time, the ventilation fan is still running and the power is increased to quickly reduce the gas concentration.

[0076] Step S402, when the current concentration of the combustible gas in the gate chamber increases by a preset gradient value, the ventilation fan is controlled to increase a preset ventilation power.

[0077] When the current concentration of combustible gas in the gate chamber increases by a preset gradient value, the ventilation fan is controlled by the ventilation fan control module, thereby increasing the ventilation power of the ventilation fan and improving the exhaust efficiency of the fan. After the ventilation fan increases its power, it will increase the air flow, discharge more combustible gas, and introduce more fresh air from the outside. If the gas concentration rises rapidly and the fan power is not increased in time, the gas concentration may continue to rise and enter the danger zone. Therefore, the purpose of increasing the ventilation power is to increase the air circulation speed, thereby quickly reducing the combustible gas concentration in the gate chamber to cope with the rapid increase in the concentration of combustible gas.

[0078] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, devices, electronic devices, and storage media. Therefore, the embodiments of the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the embodiments of the present disclosure may take the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0079] The embodiments of the present disclosure are described with reference to the flowcharts and / or block diagrams of the methods and systems according to the embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of the processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing terminal device to work in a specific way, so that the instructions stored in the computer-readable memory produce a product including an instruction device, which implements the functions specified in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device, so that a series of operation steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable terminal device provide for implementing the process in the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0080] Although the preferred embodiments of the present disclosure have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present disclosure.

[0081] Finally, it should be noted that, in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "include" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. In the absence of further restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the process, method, article or terminal device including the elements. A gate control system and method provided by the present disclosure are described in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present disclosure; at the same time, for those of ordinary skill in the art, according to the idea of ​​the present disclosure, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present disclosure.

Claims

1. A gate control system, characterized in that: The gate control system is applied to a gate room and an operating room adjacent to the gate room, and includes: a first gas detection module, a control module and a gate control module, wherein the first gas detection module is installed on a side of the gate room close to the operating room; the first gas detection module is electrically connected to an input end of the control module, the gate control module is electrically connected to an output end of the control module, and the gate control module is connected to a gate of the gate room; The first gas detection module is used to detect the concentration of the combustible gas in the gate chamber and send the detected first concentration data to the control module; The control module is configured to respond to each opening of the gate and, when judging based on the first concentration data that the current concentration of the combustible gas in the gate chamber exceeds a preset first safety threshold, send a first control signal to the gate control module; and, when the current concentration of the combustible gas in the gate chamber does not exceed the first safety threshold, send a second control signal to the gate control module; The gate control module is used to respond to the first control signal to control the gate to stop opening; or respond to the second control signal to control the gate to continue opening; wherein the angle of the gate opening each time is smaller than the maximum angle when the gate is fully open.

2. The system according to claim 1, characterized in that The system further comprises a ventilation fan and a ventilation fan control module, wherein the ventilation fan is installed in the gate chamber near the operating chamber; the ventilation fan control module is electrically connected to the output end of the control module; The control module is used to send a third control signal to the gate control module when it is determined based on the first concentration data that the current concentration of the combustible gas in the gate chamber exceeds a second safety threshold, and the second safety threshold is less than the first safety threshold; The ventilation fan control module is used to respond to the third control signal and turn on the ventilation fan.

3. The system according to claim 2, characterized in that The control module is used to determine the increment of the concentration of the combustible gas in the gate chamber according to the first concentration data; and send a fourth control signal to the gate control module every time the current concentration of the combustible gas in the gate chamber increases by a preset gradient value; The ventilation fan control module is used to control the ventilation fan to increase a preset ventilation power in response to the fourth control signal.

4. The system according to claim 1 or 2, characterized in that: The system comprises a first ventilation path, the first ventilation path extending along the gate chamber to a side away from the operating chamber, a first wind direction detection module installed on the first ventilation path, and the first wind direction detection module is electrically connected to an input end of the control module; The first wind direction detection module is used to detect the wind direction of the combustible gas in the gate chamber and send the detected first wind direction data to the control module; The control module is used for sending a first control signal to the gate control module in response to each opening of the gate, based on the first wind direction data, when it is determined that the combustible gas in the gate chamber does not flow along the first ventilation path; and sending the second control signal to the gate control module when it is determined that the combustible gas in the gate chamber flows along the first ventilation path.

5. The system according to claim 1 or 2, characterized in that: The system includes a second ventilation path, the second ventilation path extends outside the side wall of the operating room, a second wind direction detection module is installed on the second ventilation path, and the second wind direction detection module is electrically connected to the input end of the control module; The second wind direction detection module is used to detect the wind direction of the combustible gas in the operating room and send the detected second wind direction data to the control module; The control module is used to respond to each opening of the gate and, based on the second wind direction data, send a first control signal to the gate control module when it is determined that the combustible gas in the operating room does not flow along the second ventilation path; and send a second control signal to the gate control module when it is determined that the combustible gas in the operating room flows along the second ventilation path.

6. The system according to claim 1 or 2, characterized in that: The system further comprises a second gas detection module, which is installed at a side wall of the operating room; the second gas detection module is electrically connected to an input end of the control module; The second gas detection module is used to detect the concentration of the combustible gas in the operating room and send the detected second concentration data to the control module; The control module is used to send a first control signal to the gate control module in response to each opening of the gate and when it is determined based on the second concentration data that the current concentration of the combustible gas in the operating room exceeds a preset third safety threshold; and send a second control signal to the gate control module when the current concentration of the combustible gas in the operating room does not exceed the third safety threshold.

7. The system according to claim 4, characterized in that The system further comprises an alarm light module and a display module, wherein the alarm light module and the display module are electrically connected to the first gas detection module and the first wind direction detection module respectively; The warning light module is used to determine the current safety level of the gate chamber according to the first concentration data and the first wind direction data; According to the current safety level of the gate chamber, the corresponding alarm light is controlled to turn on; The display module is used to display the concentration and wind direction of the combustible gas in different areas of the gate chamber and the opening status of the gate in real time on a visual interface according to the first concentration data and the first wind direction data.

8. A gate control method, characterized in that: Applied to the system according to any one of claims 1 to 7, the method comprises: Detecting the concentration of combustible gas in the gate chamber to obtain first detected concentration data; In response to each opening of the gate, judging whether the current concentration of the combustible gas in the gate chamber exceeds a preset first safety threshold value according to the first concentration data; When the current concentration of the combustible gas in the gate chamber exceeds the first safety threshold, the gate is controlled to stop opening; and when the current concentration of the combustible gas in the gate chamber does not exceed the first safety threshold, the gate is controlled to continue opening; wherein the angle at which the gate is opened each time is smaller than the maximum angle when the gate is fully open.

9. The method according to claim 8, characterized in that The method further comprises: Determining the current concentration of the combustible gas in the gate chamber according to the first concentration data; When the current concentration of the combustible gas in the gate chamber exceeds a preset second safety threshold, the ventilation fan is turned on, and the second safety threshold is less than the first safety threshold.

10. The method according to claim 9, characterized in that The method further comprises: determining the increment of the concentration of the combustible gas in the gate chamber according to the first concentration data; When the current concentration of the combustible gas in the gate chamber increases by a preset gradient value each time, the ventilation fan is controlled to increase a preset ventilation power.

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