Tunnel ventilation method and control system

Abstract

The invention provides a tunnel ventilation method and a control system, and relates to the technical field of tunnel ventilation. The tunnel ventilation method comprises the steps of obtaining preset information; judging whether a visibility abnormal area exists in the tunnel according to preset information; under the condition that the visibility abnormal area exists in the tunnel, obtaining distance information between the visibility abnormal area and the tunnel entrance; setting the ventilation direction according to the distance information. When tunnel ventilation operation is carried out, preset information is continuously obtained, and whether a visibility abnormal area exists in the tunnel or not is judged according to the preset information. If it is judged that the visibility abnormal area exists in the tunnel, that is, a fire or agglomerate fog occurs in the tunnel, distance information between the visibility abnormal area and the tunnel entrance is obtained, and therefore the position of the visibility abnormal area in the tunnel is determined. On the basis, the optimal direction is selected as the ventilation direction according to the distance information, smoke can be timely and effectively exhausted, and the safety of vehicles running in the tunnel is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel ventilation, and in particular, to a tunnel ventilation method and a control system. Background Art

[0002] Tunnel ventilation refers to creating a required air environment for a tunnel by means of ventilation and other methods, and its purpose is to accelerate the air replacement inside and outside the tunnel and improve the air quality inside the tunnel.

[0003] The existing tunnel ventilation modes are relatively single. When a fire breaks out or there is a group fog in the tunnel, the smoke and fog cannot be discharged in a timely and effective manner, and the visibility in the area where the fire breaks out or there is a group fog is low, which affects the driving safety. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, one of the purposes of the present invention is to provide a tunnel ventilation method.

[0005] The present invention provides the following technical solutions:

[0006] A tunnel ventilation method includes:

[0007] Obtaining preset information;

[0008] Judging whether there is an abnormal visibility area in the tunnel according to the preset information;

[0009] When there is the abnormal visibility area in the tunnel, obtaining the distance information between the abnormal visibility area and the tunnel entrance;

[0010] Setting the ventilation direction according to the distance information.

[0011] As a further optional solution to the tunnel ventilation method, the setting the ventilation direction according to the distance information includes:

[0012] When the distance between the abnormal visibility area and the tunnel entrance is not greater than a preset distance, setting the ventilation direction to be the direction towards the tunnel entrance;

[0013] When the distance between the abnormal visibility area and the tunnel entrance is greater than the preset distance, setting the ventilation direction to be the direction towards the tunnel exit.

[0014] As a further optional solution to the tunnel ventilation method, after setting the ventilation direction to be the direction towards the tunnel entrance, it further includes:

[0015] Waiting for a first preset time period, obtaining the smoke concentration information in the tunnel;

[0016] Setting the ventilation direction according to the smoke concentration information.

[0017] As a further optional solution to the tunnel ventilation method, setting the ventilation direction according to the smoke concentration information includes:

[0018] When the smoke concentration is not greater than the first preset concentration, keep the ventilation direction unchanged;

[0019] When the smoke concentration is greater than the first preset concentration, set the ventilation direction to the direction towards the tunnel exit.

[0020] As a further optional solution to the tunnel ventilation method, after setting the ventilation direction to the direction towards the tunnel entrance, it further includes:

[0021] Wait for the second preset duration, and obtain the smoke concentration information in the tunnel;

[0022] Set the ventilation power according to the smoke concentration information.

[0023] As a further optional solution to the tunnel ventilation method, setting the ventilation power according to the smoke concentration information includes:

[0024] When the smoke concentration is not greater than the second preset concentration, keep the ventilation power unchanged;

[0025] When the smoke concentration is greater than the second preset concentration, increase the ventilation power.

[0026] As a further optional solution to the tunnel ventilation method, the visibility abnormal area includes the ignition point and / or the area with dense fog.

[0027] As a further optional solution to the tunnel ventilation method, when the visibility abnormal area is the ignition point, the preset information includes one or more of the smoke concentration information, temperature information, and light intensity information.

[0028] As a further optional solution to the tunnel ventilation method, judging whether there is a visibility abnormal area in the tunnel according to the preset information includes:

[0029] If the value of the preset information is not greater than the preset threshold, it is judged that there is no visibility abnormal area in the tunnel;

[0030] If the value of the preset information is greater than the preset threshold, it is judged that there is a visibility abnormal area in the tunnel.

[0031] Another object of the present invention is to provide a control system.

[0032] The present invention provides the following technical solutions:

[0033] A control system for executing the above tunnel ventilation method, the control system includes:

[0034] An information collection module, configured to obtain preset information and obtain distance information between the visibility abnormal area and the tunnel entrance;

[0035] A judgment module, configured to judge whether there is a visibility abnormal area in the tunnel according to the preset information; and

[0036] An operation module, configured to set a ventilation direction according to the distance information.

[0037] The embodiments of the present invention have the following beneficial effects:

[0038] When using the above tunnel ventilation method for tunnel ventilation operations, continuously obtain preset information, and judge whether there is a visibility abnormal area in the tunnel according to the preset information. If it is judged that there is a visibility abnormal area in the tunnel, that is, a fire occurs or a mass fog appears in the tunnel, further obtain the distance information between the visibility abnormal area and the tunnel entrance, so as to determine the position of the visibility abnormal area in the tunnel. On this basis, select the optimal direction as the ventilation direction according to the distance information, which can select a reasonable ventilation direction when a fire breaks out or a mass fog appears in the tunnel, and timely and effectively discharge smoke and fog, and maximize the safety of vehicles and personnel in the tunnel.

[0039] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following specifically gives preferred embodiments and, in conjunction with the accompanying drawings, makes the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0041] Figure 1 Shows a schematic diagram of the steps of a tunnel ventilation method provided by an embodiment of the present invention;

[0042] Figure 2 Shows a control flowchart of a tunnel ventilation method provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0043] The following details the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention and should not be construed as limiting the present invention.

[0044] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0045] In the present invention, unless otherwise clearly specified and defined, terms such as "installed", "connected", "connected to", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality of" is two or more unless otherwise clearly and specifically defined.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] Please refer to Figure 1 , this embodiment provides a tunnel ventilation method, including the following steps:

[0049] S1. Obtain preset information.

[0050] Specifically, a plurality of first sensors are arranged in the tunnel. The plurality of first sensors are evenly arranged along the extension direction of the tunnel, and each first sensor continuously collects preset information at the same time.

[0051] S2. Judge whether there is an abnormal visibility area in the tunnel according to the preset information. The specific steps are as follows:

[0052] If the value of the preset information is not greater than the preset threshold, it is determined that there is no visibility abnormal area in the tunnel.

[0053] If the value of the preset information is greater than the preset threshold, it is determined that there is a visibility abnormal area in the tunnel.

[0054] In some embodiments, the visibility abnormal area includes a fire point and / or a section with dense fog.

[0055] It can be understood that when a fire occurs in the tunnel, a large amount of thick smoke will be generated at the fire point, resulting in reduced visibility, affecting the normal driving of vehicles, and easily causing traffic accidents. In addition, the harmful gases in the thick smoke will also directly affect the safety of the drivers and passengers.

[0056] Similarly, the visibility of the section with dense fog is low, which will also affect the normal driving of vehicles and easily cause traffic accidents.

[0057] Further, when the visibility abnormal area is the fire point, the preset information includes one or more of smoke concentration information, temperature information, and light intensity information.

[0058] Exemplarily, when setting the smoke concentration information as the preset information, the first sensor uses a smoke detector. When setting the temperature information as the preset information, the first sensor uses a temperature sensor. When setting the light intensity information as the preset information, the first sensor uses a light intensity meter.

[0059] In addition, if multiple preset information are set simultaneously, correspondingly multiple sensors are used as the first sensor. For example, when setting the smoke concentration information and the temperature information as the preset information simultaneously, a smoke detector and a temperature sensor are used as a group of the first sensors, and multiple groups of the first sensors are arranged along the extension direction of the tunnel.

[0060] Optionally, taking the setting of the temperature information as the preset information as an example, multiple temperature sensors collect the actual temperature values of each area in the tunnel in real time. At the same time, a preset temperature value is set as the preset threshold.

[0061] Compare each actual temperature value collected by each temperature sensor with the preset temperature value. If each actual temperature value is not greater than the preset temperature value, it is determined that there is no fire point in the tunnel. If a certain actual temperature value is greater than the preset temperature value, it is determined that there is a fire point in the tunnel.

[0062] Alternatively, when the visibility abnormal area is the section with dense fog, the preset information includes smoke concentration information and / or humidity information.

[0063] S3. When there is the visibility abnormal area in the tunnel, obtain the distance information between the visibility abnormal area and the tunnel entrance.

[0064] Understandably, since multiple first sensors are evenly arranged along the extension direction of the tunnel, each first sensor monitors a section of the area inside the tunnel. Therefore, when the value of the preset information collected by any one of the first sensors is greater than the preset threshold, it indicates that the visibility abnormal area is within the area monitored by this first sensor.

[0065] On this basis, number the first sensors along the extension direction of the tunnel, and then the position of the visibility abnormal area in the entire tunnel can be determined according to the serial number of this first sensor, and further the distance information between the visibility abnormal area and the tunnel entrance can be obtained.

[0066] S4. Set the ventilation direction according to the distance information, and the specific steps are as follows:

[0067] When the distance between the visibility abnormal area and the tunnel entrance is not greater than the preset distance, set the ventilation direction to be the direction towards the tunnel entrance.

[0068] When the distance between the visibility abnormal area and the tunnel entrance is greater than the preset distance, set the ventilation direction to be the direction towards the tunnel exit.

[0069] Understandably, when the distance between the visibility abnormal area and the tunnel entrance is not greater than the preset distance, it indicates that the visibility abnormal area is relatively close to the tunnel entrance. At this time, setting the ventilation direction to be the direction towards the tunnel entrance is conducive to quickly exhausting the smoke in the tunnel in a short time, thereby ensuring the safety of the vehicles driving in the tunnel.

[0070] On the contrary, when the distance between the visibility abnormal area and the tunnel entrance is greater than the preset distance, it indicates that the visibility abnormal area is far from the tunnel entrance, meaning that it is difficult to quickly exhaust the smoke in the tunnel in a short time. Therefore, set the ventilation direction to be the direction towards the tunnel exit, and discharge the smoke in the tunnel towards the tunnel exit. At this time, along the vehicle driving direction, the vehicles located behind the visibility abnormal area are not affected by the smoke and can evacuate orderly, and the vehicles located in front of the visibility abnormal area continue to drive towards the tunnel exit during the fire, and are affected by the smoke for a relatively short time, and the safety is also guaranteed to a certain extent.

[0071] Further, after setting the ventilation direction to be the direction towards the tunnel entrance, the following steps are also included:

[0072] S5. Wait for the first preset duration and obtain the smoke concentration information in the tunnel.

[0073] Specifically, a second sensor is arranged in the tunnel, and the second sensor uses a smoke detector. Starting from the time when the set ventilation direction is towards the tunnel entrance, after the timing reaches the first preset duration, the second sensor is used to collect the smoke concentration in the tunnel, so as to obtain the smoke concentration information in the tunnel.

[0074] S6. Set the ventilation direction according to the smoke concentration information, and the specific steps are as follows:

[0075] When the smoke concentration is not greater than the first preset concentration, keep the ventilation direction unchanged.

[0076] When the smoke concentration is greater than the first preset concentration, set the ventilation direction to be towards the tunnel exit.

[0077] It can be understood that after exhausting smoke towards the tunnel entrance for a preset duration, if the smoke concentration in the tunnel is not greater than the first preset concentration, that is, the smoke concentration in the tunnel is within the safe range, it indicates that the smoke exhaust effect is good, and the purpose of quickly exhausting the smoke in the tunnel in a short time is achieved. Therefore, keeping the ventilation direction unchanged can effectively ensure the safety of the vehicles driving in the tunnel.

[0078] On the contrary, if the smoke concentration in the tunnel is greater than the first preset concentration, it indicates that the smoke exhaust effect is not good, and the reasons may be excessive fire, insufficient ventilation fan power, etc. At this time, set the ventilation direction to be towards the tunnel exit, that is, change to exhausting smoke towards the tunnel exit. As mentioned above, along the vehicle driving direction, the vehicles located behind the visibility abnormal area are not affected by the smoke and can evacuate orderly, and the vehicles located in front of the visibility abnormal area continue to drive towards the tunnel exit during the fire, and are affected by the smoke for a relatively short time, and their safety is also guaranteed to a certain extent.

[0079] Further, after setting the ventilation direction to be towards the tunnel entrance, the following steps are also included:

[0080] S7. Wait for the second preset duration and obtain the smoke concentration information in the tunnel.

[0081] Similar to step S5, a second sensor can be arranged in the tunnel, and the second sensor uses a smoke detector. Starting from the time when the set ventilation direction is towards the tunnel entrance, after the timing reaches the second preset duration, the second sensor is used to collect the smoke concentration in the tunnel, so as to obtain the smoke concentration information in the tunnel.

[0082] S8. Set the ventilation power according to the smoke concentration information, and the specific steps are as follows:

[0083] When the smoke concentration is not greater than the second preset concentration, keep the ventilation power unchanged.

[0084] When the smoke concentration is greater than a second preset concentration, the ventilation power is increased.

[0085] It can be understood that after the preset smoke exhaust time continues toward the tunnel entrance, if the smoke concentration in the tunnel is not greater than the second preset concentration, it indicates that the smoke exhaust effect is good and the smoke concentration in the tunnel is significantly reduced. Therefore, the ventilation power is kept unchanged and normal ventilation is sufficient.

[0086] On the contrary, if the smoke concentration in the tunnel is greater than the second preset concentration, it indicates that the smoke exhaust effect is not good, which may be caused by excessive fire, insufficient fan power, etc. At this time, the ventilation power is increased to achieve a better smoke exhaust effect.

[0087] It should be noted that the order of the above steps S5 and S7 is not limited.

[0088] Optionally, step S7 is before step S5, the first preset time is greater than the second preset time, and the first preset concentration is less than the second preset concentration. That is to say, the timing starts when the ventilation direction is set to the direction toward the tunnel entrance. After the timing reaches the second preset time, the second sensor is used to collect the smoke concentration in the tunnel, thereby obtaining the smoke concentration information in the tunnel, and judging whether the ventilation power needs to be increased based on the smoke concentration information. After the timing reaches the first preset time, the second sensor is used again to collect the smoke concentration in the tunnel, thereby obtaining the smoke concentration information in the tunnel, and judging whether the ventilation direction needs to be changed based on the smoke concentration information.

[0089] In summary, when using the above-mentioned tunnel ventilation method to perform tunnel ventilation operations, preset information is continuously obtained, and it is determined whether there is an abnormal visibility area in the tunnel based on the preset information. If it is determined that there is an abnormal visibility area in the tunnel, that is, a fire or a fog has occurred in the tunnel, the distance information between the abnormal visibility area and the tunnel entrance is further obtained to determine the position of the abnormal visibility area in the tunnel. On this basis, the optimal direction is selected as the ventilation direction based on the distance information, and a reasonable ventilation direction can be selected when a fire or a fog occurs in the tunnel, so that the smoke can be discharged in a timely and effective manner, thereby ensuring the safety of vehicles and personnel in the tunnel to the greatest extent.

[0090] Example

[0091] See also Figure 2 In some specific implementations, in response to a fire in a tunnel, temperature information is set as preset information, and the process of executing the above tunnel ventilation method is as follows:

[0092] Obtain the actual temperature value T1 inside the tunnel, and compare the actual temperature value T1 with the preset temperature value T0. If T1 ≤ T0, it is determined that there is no ignition point in the tunnel; if T1 > T0, it is determined that there is an ignition point in the tunnel. In the case where there is an ignition point in the tunnel, obtain the actual distance L1 between the ignition point and the tunnel entrance, and compare the actual distance L1 with the preset distance L0. If L1 ≤ L0, ventilate towards the tunnel entrance; if L1 > L0, ventilate towards the tunnel exit. After ventilating towards the tunnel entrance, wait for the preset duration t2, then obtain the smoke concentration k2 inside the tunnel, and compare the smoke concentration k2 with the second preset concentration K2. If k2 ≤ K2, the ventilation power remains unchanged; if k2 > K2, increase the ventilation power. Meanwhile, after ventilating towards the tunnel entrance, wait for the preset duration t1, then obtain the smoke concentration k1 inside the tunnel, and compare the smoke concentration k1 with the first preset concentration K1. If k1 ≤ K1, the ventilation direction remains unchanged; if k1 > K1, change to ventilating towards the tunnel exit.

[0093] This embodiment also provides a control system for executing the above-mentioned tunnel ventilation method. The control system includes an information collection module, a judgment module, and an operation module.

[0094] Among them, the information collection module is used to obtain preset information and the distance information between the visibility abnormal area and the tunnel entrance.

[0095] Correspondingly, the judgment module is used to judge whether there is a visibility abnormal area in the tunnel according to the preset information, and the operation module is used to set the ventilation direction according to the distance information.

[0096] In addition, this embodiment also provides a readable storage medium, and the readable storage medium stores computer instructions for causing a computer to execute the tunnel ventilation method described in the foregoing method embodiment.

[0097] In all the examples shown and described here, any specific value should be construed as merely exemplary, not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0098] It should be noted that: similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0099] The above-described embodiments merely represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but should not be construed as a limitation to the scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A tunnel ventilation method, characterized in that, Including: Obtain preset information; Judge whether there is an abnormal visibility area in the tunnel according to the preset information; When there is the abnormal visibility area in the tunnel, obtain the distance information between the abnormal visibility area and the tunnel entrance; Set the ventilation direction according to the distance information.

2. The tunnel ventilation method according to claim 1, wherein The setting of the ventilation direction according to the distance information includes: When the distance between the abnormal visibility area and the tunnel entrance is not greater than a preset distance, set the ventilation direction to the direction towards the tunnel entrance; When the distance between the abnormal visibility area and the tunnel entrance is greater than the preset distance, set the ventilation direction to the direction towards the tunnel exit.

3. The tunnel ventilation method according to claim 2, wherein, After setting the ventilation direction to the direction towards the tunnel entrance, it further includes: Wait for a first preset duration, and obtain the smoke concentration information in the tunnel; Set the ventilation direction according to the smoke concentration information.

4. The tunnel ventilation method according to claim 3, characterized in that, The setting of the ventilation direction according to the smoke concentration information includes: When the smoke concentration is not greater than a first preset concentration, keep the ventilation direction unchanged; When the smoke concentration is greater than the first preset concentration, set the ventilation direction to the direction towards the tunnel exit.

5. The tunnel ventilation method according to claim 2, characterized in that After setting the ventilation direction to the direction towards the tunnel entrance, it further includes: Wait for a second preset duration, and obtain the smoke concentration information in the tunnel; Set the ventilation power according to the smoke concentration information.

6. The tunnel ventilation method according to claim 5, characterized in that, The setting of the ventilation power according to the smoke concentration information includes: When the smoke concentration is not greater than a second preset concentration, keep the ventilation power unchanged; When the smoke concentration is greater than the second preset concentration, increase the ventilation power.

7. The tunnel ventilation method according to any one of claims 1-6, characterized in that The abnormal visibility area includes a fire point and / or a section with heavy fog.

8. The tunnel ventilation method according to claim 7, characterized in that, When the abnormal visibility area is the fire point, the preset information includes one or more of smoke concentration information, temperature information, and light intensity information.

9. The tunnel ventilation method according to any one of claims 1-6, characterized in that, The judging whether there is an abnormal visibility area in the tunnel according to the preset information includes: If the value of the preset information is not greater than a preset threshold, judge that there is no abnormal visibility area in the tunnel; If the value of the preset information is greater than the preset threshold, judge that there is an abnormal visibility area in the tunnel.

10. A control system, characterized in that, For implementing the tunnel ventilation method according to any one of claims 1-9, the control system includes: An information collection module, configured to obtain preset information and the distance information between the abnormal visibility area and the tunnel entrance; A judging module, configured to judge whether there is an abnormal visibility area in the tunnel according to the preset information; and An operation module, configured to set the ventilation direction according to the distance information.

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