JP2019044507A - Road tunnel ventilation control device - Google Patents

Abstract

To control to minimize the total power consumption while satisfying the wind speed restriction in a tunnel where the total number of inlet and outlet paths is 4 or more, and the total number of a jet fan unit group and a vertical shaft feed/exhaust fan unit is 4 or more.SOLUTION: A road tunnel ventilation control device 100 comprises: sample wind speed value selection processing means 101 for selecting a sample wind speed value from values that can be taken within a wind speed restriction range for inlet and outlet paths; jet fan unit group calculation processing means 102 for calculating the operating speed and power consumption of a jet fan unit group by calculating the wind speed in a tunnel on the basis of the sample wind speed value; vertical shaft feed/exhaust fan unit calculation processing means 103 for calculating the operating speed and power consumption of a vertical shaft feed/exhaust fan unit from the total inflow air volume through the inlet and outlet paths; total power consumption calculation processing means 104 for calculating the total power consumption of sample wind speed values; optimum sample wind speed value selection processing means 105 for changing the sample wind speed value within the wind speed restriction range to select the minimum value; and operation control means 106.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a ventilation control device for a road tunnel that controls the operation of a jet fan and a shaft feeding and exhausting fan for ventilation of the road tunnel.

In road tunnels, emission substances and dust from automobile engines harmful to human bodies are suspended, and as it is, the concentration of pollutants in the tunnel increases. Therefore, in order to prevent the emission of harmful gases such as carbon monoxide in the tunnel and the decrease in visibility (the visibility) due to the smoke in the exhaust gas and to exhaust the contaminants in the tunnel to secure a good environment in the tunnel, Ventilation control is performed by a jet fan and vertical shaft feed exhaust fan system. In order to exhaust the contaminants in the tunnel, ventilation by natural ventilation or traffic ventilation is not enough, and thus forced ventilation is performed using a plurality of ventilators installed in the tunnel.
There are various ways to ventilate the tunnel. There are many cases where the ventilation system called "vertical flow ventilation system" or "stand-up ventilation system" is adopted as the ventilation system of medium-sized and small two-way road tunnels of 3000m or less which are very many in Japan.

The “vertical flow ventilation system” is a ventilation system of a system that utilizes the entire tunnel cross section as a ventilation duct, and as a ventilation system to be used, a jet fan device that pushes air in the road tunnel out of the tunnel or air in the road tunnel In order to purify the air, an electric dust collector is used, and these are appropriately combined to form an air flow from the inlet to the outlet of the tunnel to exhaust the air.
"Static ventilation system" has a tunnel facing the atmosphere near the exit of the road tunnel, a shaft ventilating fan for ventilating air in the tunnel facing upwards, and air in the road tunnel It is exchanged with air outside the road tunnel. In the case of a long distance, in addition to the vicinity of the exit, a shaft may be provided as appropriate in the middle of the road tunnel to install the exhaust fan device.

  FIG. 13 is a view showing a road tunnel and traffic within a tunnel combining a vertical flow ventilation system using a conventional general jet fan and a static ventilation system. This tunnel is a type in which the traffic direction is one-way and one-way tunnel. In such a one-way road tunnel, a plurality of jet fans are disposed for each jet fan device group 20 that ventilates in the longitudinal direction inside. In the example of FIG. 13, three groups of jet fan device groups 20A, 20A and 20C are drawn. In the road tunnel, a longitudinal air flow A is generated from the left to the right in the figure, and the polluted air in the tunnel is exhausted from the left to the right. The ventilation control device 30 controls the operation of the jet fan device group 20. Further, in the road tunnel 10, an air flow B of the exhaust gas is generated by the ventilation vent device 21 installed near the exit, and the polluted air in the tunnel is exhausted from the inside of the tunnel toward the atmosphere. The ventilation control unit 30 controls the operation of the jet fan unit group 20 and the anti-ventilate fan unit 21.

In the example of FIG. 13, a traffic counter (TC) and an anemometer (AV) are respectively installed in each place near the entrance, near the center, and near the exit in the tunnel. A rate meter (VI) and a carbon monoxide concentration meter (CO) are installed.
The traffic counter (TC) is a device for measuring the traffic volume of vehicles passing through the installation site, the wind direction anemometer (AV) is a device for measuring the wind speed at the installation site, and the smoke transmissometer (VI) Is a device for measuring the concentration of contamination at the installation site from the ratio of light transmitted through the substance, and a carbon monoxide concentration meter (CO) is a device for measuring the concentration of carbon monoxide at the installation site.

  In the vertical flow ventilation method using the conventional jet fan, it was obtained from traffic counter (TC) inside wind tunnel, wind direction anemometer (AV), fog permeability meter (VI), carbon monoxide concentration meter (CO) Based on various environmental component values, the number of operating jet fans of the jet fan apparatus groups 20A to 20C installed inside the road tunnel is adjusted by the ventilation control device 30. That is, an environmental component measuring device for measuring environmental component values such as soot, carbon monoxide, traffic volume or wind direction and wind speed is installed inside the road tunnel, for example, based on the measurement values of these environmental component measuring devices. The number of jet fans of the jet fan device groups 20A to 20C is operated as many as necessary to secure the necessary ventilation volume, thereby making the concentration of pollutants below the preset allowable value, and the tunnel user's Safety and comfort are ensured. As described above, in the conventional road tunnel, the wind speed inside the tunnel is controlled by the number of operating jet fans, but there is a problem that the power consumption increases.

  Here, an inverter control method has attracted attention. In recent years, the inverter control system capable of variable speed control has been put to practical use, and stepless wind speed control has become possible for the operation of the jet fan apparatus. Then, in order to reduce power consumption, a control method of operating speed by inverter drive is spreading.

  In order to maximize the benefits of the inverter control method, the road that meets the wind speed constraints of the entrance and exit and minimizes the total power consumption of the jet fan group and the shaft transmission exhaust fan unit according to the traffic volume change per day A tunnel ventilation controller is required.

Unexamined-Japanese-Patent No. 2004-19250

  In Japan, there is an increase in complicated one-way tunnels such as shown in FIG. 13 in which the total number of car entrances and exits is four or more on expressways in urban areas. An example is shown in FIG. In order to prevent the outflow of contaminated air to the outside of the tunnel, a ventilation system is generally used in which air is taken in from all the inlets and outlets and is centrally exhausted by a shaft exhaust fan. That is, if the wind speed is set in the range where negative pressure is drawn inward to all the in and out passages, the air in the tunnel is not discharged from the in and out passages of the tunnel and the shaft feeding exhaust fan device It will be discharged upward at the point. For example, in the configuration of FIG. 3, the wind speed constraint is set in the range of 0.5 m / s or more for both the entrance 1 and the entrance 2, and −1.0 m / s for the exit 1 and −0.5 m for the exit 2 The wind speed constraint is set in the range of not more than 1 / s (the wind speed makes the traveling direction of the car a positive direction). In the configuration example of FIG. 3, there are three jet fan device groups (JFG1, JFG2, and JFG3), two JFG1, ten JFG2, and one JFG3. The total number of jet fans is thirteen. There is only one vertical exhaust fan unit, and their ventilation system is controlled to control the wind speed in the tunnel.

  As described above, when the total number of entry and exit paths of a car is 4 or more, and the total number of jet fan devices and shaft feed exhaust fan devices as ventilation devices to be controlled is 4 or more, set in each of the entry and exit paths. It is necessary to control the operation of the ventilators so that the wind speed can be secured in the above range, but there are the following problems in performing such control in the tunnel ventilation control device.

The first problem is that in the prior art road tunnel ventilation controller, the technology to control in such complex conditions with many control targets and control targets is not established, and the total power consumption is always optimized. It was not always the case.
In the prior art, there has been no choice but to attempt exhaustive search for all combinations of wind speed and air volume values that can be taken by the so-called direct controlled jet fan device group and shaft transmission and exhaust fan device. In other words, for each and every combination of values that can be taken by the jet fan unit group and the vertical feed fan unit, the resulting environmental conditions in the road tunnel, the wind speed of the entrance and exit roads are calculated, and the specification conditions It is necessary to check whether the condition is satisfied, calculate the total power consumption, and compare all results to determine the case with the lowest total power consumption as the optimum value.

The second problem is the problem of computational cost.
As described above, in Japan, in the urban expressway, as shown in FIG. 13, the total number of entry and exit paths of vehicles is 4 or more, and the jet fan group and shaft feed exhaust fan unit as ventilation devices to be controlled The number of complex one-way tunnels with a total number of four or more is increasing, and as a result, exhaustive search by all combinations of the values that can be taken by the jet fan unit and the shaft delivery exhaust fan unit in the prior art described above When the trial of crushing is performed, the number of trials to be considered in control increases, and in order to perform the optimization control of the power consumption, the amount of calculation increases exponentially, and 30 according to the traffic volume. Minute real-time control becomes difficult.

FIG. 14 is a flow chart showing steps of control processing in the road tunnel ventilation control device assuming a case of exhaustively searching possible values of all the control target ventilation devices in the prior art. As shown in FIG. 14, the following five steps are processed.
Step 1 selects the combination of the wind speed VJ1, VJ2, VJ3 of the jet fan group and the air flow rate QE of the vertical feed fan. In addition, if all combinations are examined as described later, it is conceivable to start each variable from a minimum value and sequentially increase each variable to correspond to all combinations.
Step 2 calculates the wind speed distribution (V1 to V6) in the tunnel that occurs when all the ventilators operate at the set values assumed in step 1 above.
Step 3 examines the incoming wind speed (V1, V5) and outgoing wind speed (V4, V6) calculated in step 2, and if the values are within the speed constraints set for the respective incoming and outgoing paths. Calculate total power consumption. If it is out of range, remove it from the candidate.
Step 4 is a step of determining whether or not all combinations of the wind speeds VJ1, VJ2, VJ3 of the jet fan group and the air volume QE of the vertical feed fan in the above step 1 have been tried. If yes, go to step 5 and if there are still untried combinations, return to step 1 above.
Step 5 selects all the combinations which have been tried, and among the stored candidates, the one which minimizes the total power consumption by the jet fan apparatus group and the shaft delivery exhaust fan apparatus is selected as the optimum solution.

  Let's roughly evaluate the computational complexity of the above process. In the inverter control method, the wind velocity VJ of the jet fan device and the air volume QE of the vertical shaft feed exhaust fan device can be controlled in a stepless manner, for example, assuming that each wind velocity is changed in 100 steps, three jet fan device groups Since there is a single shaft feed exhaust fan device, the number of combinations is as high as 108, which increases the calculation cost. Note that the number of jet fan units and the number of shaft feed exhaust fan units are expected to be even more, and it can be considered that the number will actually be even more than 108, making it difficult to control real-time control every 30 minutes according to traffic volume. It becomes.

  In step 1 above, a rough search is first applied, and in step 3 prospects for combinations of control variables that satisfy the constraint conditions are obtained, and those within the obtained prospect range are calculated in detail. The calculation cost can be avoided to some extent by using the improvement measures to be carried out, but it is judged in step 5 that the calculation within the range has been completed for all combinations of control variables narrowed by the first rough search in step 1. Then, the optimal solution (local optimal solution) is selected in step 6, but in the rough search performed in step 1, the true optimal solution is selected if the range in which the true optimal solution exists is overlooked There are times when I can not ask.

  Furthermore, there is a circumstance that this calculation has to be performed every predetermined time period per day. The traffic volume of vehicles traveling in the road tunnel and the wind speed of the traffic wind change with the passage of time, climate change, and seasonal change. FIG. 15 is a diagram showing daily traffic volume change of the main line (section 2) of the road tunnel of FIG. 13 for three days. As shown in FIG. 15, it can be seen that traffic volume fluctuates with time even during one day, and traffic volume fluctuates when the day changes even in the same time zone. What can be said from FIG. 15 is that it is not possible to set in advance a fixed value for the traffic volume in the time zone. If the traffic volume is estimated less than the actual traffic volume, the pollution concentration in the road tunnel will be higher than the expected value, and if the traffic volume is estimated more than the actual traffic volume, the total power consumption of the ventilator is wasted Will consume a lot of

  In view of the above problems, according to the present invention, the total number of entry and exit paths of a car is four or more, and the total number of jet fan devices and vertical shaft feed exhaust fan devices as ventilation devices to be controlled is four or more. For a complex control system in which multiple wind speed constraints are set as its control target, it is an object of the present invention to provide a road tunnel ventilation control device capable of executing control processing in real time in low calculation cost and minimizing total power consumption. .

In order to achieve the above object, the road tunnel ventilation control device according to the present invention has a total of four or more input and output paths, and the total number of jet fan devices and shaft feed exhaust fan devices as four ventilation devices to be controlled is four. As described above, the road tunnel ventilation control device for controlling the operation of the ventilating device under a condition where a plurality of wind speed constraints as control targets are set, is taken within a predetermined wind speed constraint range for each of the entrance and exit. Sample wind speed value selection processing means for selecting a combination of sample wind speed values from among combinations of values to be obtained, a wind speed generated in each section in the road tunnel based on the sample wind speed values, and a jet for realizing the wind speed Jet fan apparatus group calculation processing means for calculating the operating speed and power consumption of the fan apparatus group, and based on the sample wind speed value Shaft feed exhaust fan device calculation processing means for calculating the operating speed and power consumption of the shaft feed exhaust fan device from the calculated total inflow air volume through all the inlet and outlet and the jet fan device group Total power consumption calculation processing means for calculating the total power consumption for each of the assumed sample wind speed values from the power consumption of the shaft and the power consumption of the shaft transmission / exhaust fan device; Optimal sample wind speed value selection processing means for selecting the sample wind speed value at which the total power consumption is variously changed in various ways as the optimum sample wind speed value, and each jet fan apparatus so as to obtain the optimum sample wind speed value A road comprising: operation control means for controlling the operation of a group and each of said shaft feeding and discharging fan devices, and performing ventilation control within said road tunnel. Tunnel is the ventilation control device.
With the above configuration, the total number of entry and exit paths is four or more, the total number of jet fan devices and the vertical shaft exhaust fan unit are four or more as ventilation devices to be controlled, and multiple wind speed constraints as control targets are set. Even under the conditions, it is possible to calculate the optimum sample wind speed value that theoretically minimizes the total power consumption, and to perform control on the ventilator.

In the present invention, the flow of control processing shown in FIG. 14 of the prior art is fundamentally reversed, and a combination of the wind speed of the entrance and the wind speed of the exit, which is the result of control, is determined first. The search method is to calculate with the reverse flow of determining the combination of the wind speed of the jet fan group that generates the air flow and the air volume of the vertical feed fan.
Here, this optimization method is called "a heuristic search method".
Generally, the total number M of road tunnels in and out of the road tunnel is smaller than the total number N of jet fan devices and shaft feed exhaust fan devices, and the total number M1 of ingresses is even smaller. Therefore, the search space 10 ^M of the heuristic search method is much smaller than the search space 10 ^N of the prior art exhaustive search method. This is the reason why the heuristic search method can reduce the complexity and the calculation time can be significantly reduced.

  The controllability of control processing using a heuristic search method will be described. In control processing using a heuristic search method, the wind speeds of the entrance and exit paths are determined first, the wind speed in the tunnel is determined based on that, and the wind speed of the jet fan is controlled to be the wind speed in the tunnel. Take an approach. Since the traffic ventilation power changes depending on the traffic volume, the controllability that the wind speed in the tunnel can be controlled via the wind speed control of the jet fan apparatus group is a premise. In a normal road tunnel, the jet fan devices are properly arranged, so controllability is less likely to be an issue.

Next, as a result of the inventor's research on the "discovery search method", he realized that further improvement was possible.
First, when the combination obtained as the optimal solution is examined in the time zone where traffic volume is small, the wind speed of the entrance and the wind speed of the exit have minimum values of absolute wind speed within the wind speed restriction range I understood. This is because the wind velocity distribution in the tunnel is constant during this time zone, so the influence of traffic ventilation is small, and it is necessary to control by the wind velocity generated by the jet fan device group and the vertical feed fan device. The wind speed at the entrance is not sufficient just by the traffic ventilation force (car's piston effect) generated according to the traffic volume.
Next, when the combination obtained as the optimal solution is examined in the time zone where traffic volume is above a certain level, the wind speed of the exit is the minimum absolute value of the wind speed restriction range, but the wind speed of the entrance is the wind speed It was found that the absolute value of the constraint range was larger than the minimum value. In this case, it means that the power consumption of the jet fan apparatus group is reduced if the traffic ventilation power of the incoming route is used. However, on the way out, the use of traffic ventilation means that the power consumption goes up conversely.

From this, in the sample wind speed value selection processing means, the inventors fix the sample wind speed value of each outgoing path to the value having the smallest absolute value within the wind speed constraint range, and the sample wind speed value of each incoming path is It has been found that the control process of freely selecting from the wind speed restriction range is effective.
That is, not all combinations of values of incoming wind speed and outgoing wind speed to be calculated, only outgoing wind speed is fixed and only possible values of incoming wind speed are searched. Here, this optimization method is referred to as "improved heuristic search method".

  Next, the process in the case where there are a plurality of installation locations of the vertical shaft exhaust fan unit in the road tunnel will be described. In this case, in the above-mentioned shaft delivery and exhaust fan device calculation processing means, the total operating air volume of each shaft delivery and exhaust fan device is determined to be equal to the total inflowing volume from all the inlets and outlets. The distribution ratio that minimizes the total power consumption may be selected from among several defined distribution ratios.

Next, a device for dividing and controlling the entire road tunnel into a plurality of sub-tunnels in the case where the road tunnel is long or the like will be described.
The entire road tunnel is divided into a plurality of sub-tunnels, and the dividing point is regarded as an entry path in the inflow sub-tunnel where the car flows in from the dividing point, and the dividing point is regarded as an outgoing path in the outflow sub-tunnel where the car flows out from the dividing point. Thus, the improved heuristic search method described above can be applied by regarding division points as entrance and exit paths.
That is, if the above-described improved heuristic search method is applied, the wind speed of the division point can be taken within a predetermined wind speed restriction range for one or more division points dividing the whole road tunnel into a plurality of subtunnels. Divided sample wind speed value selection processing means for selecting a divided sample wind speed value or a combination thereof among values, and the division point under the conditions of the divided sample wind speed value at the division point selected by the divided sample wind speed value selection processing means From the point of view, in the inflow sub-tunnel where the car flows in, the division point is the ingress path, and in the outflow sub-tunnel where the car flows out from the division point, the division point is regarded as the egress path, the sample wind speed value selection processing means, Jet fan apparatus group calculation processing means, said vertical transmission / discharge fan apparatus calculation processing means, said total power consumption calculation processing means, each total Power consumption is calculated, and the sample wind speed value is changed variously within the wind speed restriction range by the sample wind speed value selection processing means, and further, the wind speed at the division point is restricted by the divided sample wind speed value selection processing means The optimum sample wind speed values for the entire road tunnel can be determined which varies within a range and which minimizes the total power consumption. The operation control means can control the operation of the jet fan apparatus group and each vertical air delivery fan apparatus so as to obtain the optimum sample wind speed value determined for each subtunnel.

According to the road tunnel ventilation control device of the present invention, the total number of entry and exit paths is 4 or more, and the total number of jet fan devices and the vertical shaft delivery exhaust fan device as the ventilation devices to be controlled is 4 or more. Even under conditions where a plurality of wind speed constraints are set, it is possible to calculate an optimum sample wind speed value that minimizes the total power consumption theoretically and to execute control on the ventilator.
Further, in the road tunnel ventilation control device according to the present invention, the wind speed of the exit is fixed to a value (minimum value of wind speed drawn into the tunnel) at which the absolute value of the wind speed restriction range is minimum. If the control process to which the heuristic search method is applied is applied, the search space of the heuristic search method becomes smaller, and the calculation time can be significantly shortened.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram explaining the basic composition of the road tunnel ventilation control apparatus 100 of this invention concerning Example 1. FIG. It is a flowchart which shows the flow of a process of the road tunnel ventilation control apparatus 100 of this invention concerning Example 1. FIG. It is the figure which showed the mode in the tunnel typically. It is a flowchart which shows the flow of a process using the improvement type heuristic search method of the road tunnel ventilation control system 100 concerning Example 2. FIG. It is a figure which shows a one-day change of the entrance wind speed selected as an optimal sample wind speed value using the control processing using the improved heuristic search method of this invention, and an exit wind speed. FIG. 7 is a diagram showing a daily change of a jet fan speed and an exhaust fan air volume required to generate an entrance wind speed and an exit wind speed selected as optimum sample wind speed values. It is a figure which shows the daily change of the total power consumption and exhaust fan air volume by control processing using the improved heuristic search method of this invention. It is a figure showing an example in case a plurality of jet fan device groups exist in one section in a road tunnel. It is a figure which shows the example in the case of multiple vertical shaft exhaust fans in a road tunnel. FIG. 8 is a view showing a concept of dividing a complex road tunnel example and applying a control process of road tunnel ventilation using an improved heuristic search method. FIG. 18 is a block diagram for explaining a basic configuration of a road tunnel ventilation control device 100a according to a fifth embodiment. It is a flowchart which shows the flow of a process using the improvement type heuristic search method of the road tunnel ventilation control apparatus 100a concerning Example 5. FIG. It is the figure which showed the traffic in the road tunnel which combined the vertical flow ventilation system using a conventional common jet fan, and a standing anti-vention system, and a tunnel. It is a flowchart which shows the flow of the process which used exhaustive search regarding the possible value about the ventilator which is all the control object in a prior art. It is the figure which showed the daily traffic volume change of the main line (section 2) of a road tunnel over 3 days.

  Hereinafter, an embodiment of a road tunnel ventilation control device of the present invention will be described with reference to the drawings. However, it goes without saying that the scope of the present invention is not limited to the specific application, shape, number and the like shown in the following examples.

1 shows an example of a road tunnel ventilation control device 100 according to a first embodiment of the present invention.
FIG. 1 is a block diagram for explaining a basic configuration of a road tunnel ventilation control device 100 according to a first embodiment of the present invention.
FIG. 2 is a flowchart showing the process flow of the road tunnel ventilation control device 100 of the present invention according to the first embodiment.
FIG. 3 is a view schematically showing the inside of the tunnel.
FIG. 1 shows, in addition to the road tunnel ventilation control device 100, various sensors and sensor units 110 disposed in the tunnel, a jet fan device group 200 which is a ventilation device, and a vertical feed fan device 210.

First, the sensor unit 110 will be described.
The sensor unit 110 includes various sensors and measuring instruments for collecting actual measurement data, and includes fog permeability data in the tunnel, polluted gas concentration data, cross-section wind speed data, and vehicle traffic volume data in the tunnel. It is a part that measures and collects data in the tunnel. In this configuration example, a traffic counter (TC) 111, an anemoscope (AV) 112, a fog transmittance data measuring instrument (VI) 113, and a carbon monoxide concentration data measuring instrument (CO) 114 are provided.
The traffic counter 111 is a sensor that measures the number and speed of vehicles passing through the tunnel, and the traffic counter 111 can obtain necessary data regarding the vehicles passing through the tunnel. The installation site may be any site suitable for managing the entry and exit of the vehicle to and from the tunnel, and in this example, it is installed near all the entrances and near all the exit roads.
The anemometer 112 is installed at a position suitable for measuring the flow of the vertical flow ventilation, for example, an entrance of the tunnel 200, an appropriate section inside the tunnel, and an exit. In this example, there are two entrances, one for entrance 1 and two for entrance 2. Since there are two at exit 2 and one at exit 2, there are two places, jet fan device group 200 is installed inside the tunnel. Since there are three sections, it is an example installed in each.
The fog transmittance data measuring device 113 is a device that includes a laser irradiation unit and a laser light receiving unit, and measures the concentration of contamination by dust or the like from the ratio of laser light that passes through the air between the laser irradiation unit and the laser light receiving unit. The installation site may be an appropriate section in the tunnel. In this example, there are three sections in which the jet fan apparatus group 200 is installed, so this is an example installed in each section.
The carbon monoxide concentration data meter 114 is a device that measures the concentration of carbon monoxide in the tunnel 200. The installation site may be an appropriate section in the tunnel. In this example, there are three sections in which the jet fan apparatus group 200 is installed, so this is an example installed in each section.

Next, each component of the road tunnel ventilation control device 100 will be described.
The road tunnel ventilation control device 100 performs ventilation control through control of a jet fan device 200 which is a ventilation device in a road tunnel and a shaft feed exhaust fan device 210.
The road tunnel ventilation control device 100 comprises sample wind speed value selection processing means 101, jet fan apparatus group calculation processing means 102, vertical shaft exhaust fan apparatus calculation processing means 103, total power consumption calculation processing means 104, optimum sample wind speed value selection processing means The configuration example is provided with the operation control means 106.

The sample wind speed selection processing means 101 selects a combination of sample wind speed values from among combinations of values that can be taken within a predetermined wind speed restriction range for each ingress and egress according to the traffic volume in the road tunnel. . The traffic volume in the road tunnel is determined from the numerical value measured by the traffic counter, and for example, the traffic volume should be grasped every 30 minutes.
The sample wind speed selection processing means 101 selects a sample wind speed value from combinations of values that can be taken as each of the ingress and egress paths, and as described in the flowchart shown in FIG. The loop process is repeated until all combinations of possible values are selected and calculated.

  The jet fan apparatus group calculation processing means 102 calculates the wind speed generated in each section in the road tunnel based on the sample wind speed value selected by the sample wind speed value selection processing means 101, and realizes the wind speed concerned. It is to calculate the driving speed.

  The shaft feed exhaust fan device calculation processing means 103 operates the shaft feed exhaust fan device from the total inflow air volume through all the inlets and outlets calculated based on the sample wind velocity value selected by the sample wind velocity value selection processing means 101. It is to calculate the speed.

  Total power consumption calculation processing means 104 calculates the amount of power consumption from the operating speed of each jet fan device group calculated by jet fan device group calculation processing means 102, and the vertical transmission calculated by vertical transmission / discharge fan device calculation processing means 103 The power consumption is calculated from the operating speed of the exhaust fan device, and the total power consumption for each assumed sample wind speed value is calculated.

  The optimum sample wind speed selection processing means 105 variously changes the sample wind speed value selected by the sample wind speed selection processing means 101 within the wind speed restriction range, and as a result, the total consumption calculated by the total power consumption calculation processing means 104 The sample wind speed value which minimizes the power is selected as the optimum sample wind speed value.

  The operation control means 106 controls the ventilators of the jet fan device group 200 and the vertical feed fan assembly 210 to realize the optimum sample wind speed value selected by the optimum sample wind speed value selection processing means 105. Control for providing an operation control signal.

The flow of control processing by the road tunnel ventilation control device 100 having the above configuration will be described while giving a specific example.
Consider the road tunnel model in FIG. The road tunnel model of FIG. 3 is the same as the road tunnel model of FIG. 13 for comparison.
As shown in FIG. 3, in this configuration example, tunnels assume six sections from tunnel sections 1 to 6.
The jet fan apparatus group is divided into three groups JFG1, JFG2 and JFG3. Jet fan apparatus groups 200A, 200B and 200C are disposed in the tunnel sections 1, 2 and 3 of the main line, respectively. In addition, one vertical shaft exhaust fan device 210 is disposed between the tunnel sections 3 and 4 in this example.
In addition, each jet fan apparatus in a jet fan apparatus group shall be drive | operated at equal speed. The reason is that when a constant wind speed is obtained as a group in the jet fan device group, the power consumption is minimized when the jet fan devices are operated at the same constant velocity.

  Next, in the example shown in FIG. 3, the wind speed restriction range of the wind speed V1 of the entrance 1 is V1 ≧ 0.5 m / s, and the entrance 2 as the wind speed restriction range set for each entrance and exit. The wind speed restriction range of the wind speed V5 is V5 ≧ 0.5 m / s, the wind speed restriction range of the wind speed V4 of exit 1 is V4 ≦ -1.0 m / s, the wind speed restriction range of wind speed V6 of exit 2 is V6 ≦ This is an example of -0.5 m / s.

Here, the operating wind speeds VJ1, VJ2, VJ3 and the operating air volume QE are determined so as to satisfy the wind speed constraints of the inlets 1 and 2 and the outlets 1 and 2 and minimize the total power consumption of the jet fan group and the shaft transmission exhaust fan group. The problem is formulated into a constrained non-linear optimization problem that minimizes the total power consumption represented by (Eq. 1) under the wind speed constraints of (Eq. 2) to (Eq. 5).





Here, VJi is the wind speed of Ji, and QE is the air flow rate of the vertical shaft exhaust fan device. Further, (Equation 2) indicates the wind speed of the entrance 1, (Equation 3) indicates the wind speed of the entrance 2, (Equation 4) indicates the wind speed of the exit 1, and (Equation 5) indicates the wind speed restriction of the exit 2.

  In this example, the control processing by the road tunnel ventilation control device 100 is updated every 30 minutes. That is, according to the average traffic volume for 30 minutes, the output is a control system which becomes the operating wind speed of the jet fan group and the operating wind volume of the vertical shaft exhaust fan. It is sufficient to repeat this optimization calculation 48 times according to the change in traffic volume in one day to obtain the optimum driving pattern in one day.

An outline of control processing in the road tunnel ventilation control device 100 according to the invention will be described.
FIG. 2 is a flowchart showing a control processing procedure using the heuristic search method by the road tunnel ventilation control device 100 of the present invention.
As shown in FIG. 2, processing is performed from the following steps.
Step 201 in FIG. 2 is a step of selecting a certain combination (sample wind speed value) from among combinations that can be taken as the wind speed value of the entrance path and the wind speed value of the exit path by the sample wind speed value selection processing means 101. For example, it is assumed that the absolute values of the inlet and outlet wind speeds do not exceed 5.0 m / s, and the changeable values are each 0.05 m / s.
Here, for example, if the wind speed values of the entrance routes 1 and 2 and the exit routes 1 and 2 are sequentially increased from the minimum value to become a round-robin so that all combinations are sequentially selected, all combinations You can hit

Note that, as described later, by repeating the loop from step 206 to step 201, combinations of wind speeds of the following inflow and outflow paths are sequentially selected.
Entry: V1 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
V5 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
Outgoing path: V4 [m / s] = -1.00, -1.05, -1.10, ..., -5.00 (81 Case)
V6 [m / s] = -0.50, -0.55, -0.60, ..., -5.00 (91 Case)
That is, a combination of 91 × 91 × 81 × 91 = 6103,251 will be sequentially selected, but first, one selected combination is selected as the sample wind speed value of the entrance and exit, and step 202 Transition.

In step 202, the wind velocity distribution in the tunnel (V1 to V6) is calculated by the jet fan group calculation processing means 102 based on the sample wind speed values of the incoming and outgoing paths assumed by the sample wind speed value selection processing means 101 in step 1 above. Is a step of calculating
Once the sample wind speed values of the incoming and outgoing paths and the air volume thereof are determined, the wind speed distribution (V1 to V6) in the tunnel can also be calculated.

  Step 203 calculates the wind speeds VJ1, VJ2, VJ3 of the jet fan group 200A, B, C by the jet fan group calculation processing means 102 from the wind speed distribution (V1 to V6) of each section obtained in step 202. It is a step. If the wind speed in the tunnel is controllable, these can be calculated theoretically.

In step 204, based on the sample wind speed values of the inlet and outlet paths assumed by the sample wind speed value selection processing means 101 in step 1 described above, the vertical feed air fan volume QE and the wind speed VE are calculated by Is a step of calculating
The shaft feed exhaust fan air volume QE is obtained from QE = Q1 + Q5-Q4-Q6, and the wind velocity VE of the shaft feed exhaust fan device is obtained from the shaft feed exhaust fan air volume QE and the area SQ of the shaft feed outlet.
Here, Q1 is the amount of air blown into the section 1 through the inlet 1. It can be obtained from the cross-sectional area S1 of the inlet 1 and the wind speed V1. Similarly, Q5 is the amount of air blown into the section 5 through the inlet 2 and is obtained from the cross-sectional area S5 of the inlet 2 and the wind speed V5. Q4 is the amount of air blown into the section 4 through the outlet 1. It is obtained from the cross-sectional area S4 of the outlet 1 and the wind speed V4. Q6 is the amount of air blown into the section 6 through the outlet 2 and is obtained from the cross-sectional area S6 of the outlet 2 and the wind speed V6.

In step 205, based on the wind speed VJ of the jet fan group calculated in step 103 and the vertical transmission and exhaust fan speed VE calculated in step 204, the total power consumption calculation processing means 104 calculates the total power consumption necessary for their operation. It is a step to calculate.
If the wind speed VJ of the jet fan group and the wind speed VE of the vertical shaft are determined, the power consumption for rotating the motor is determined by the wind speed, and the total power consumption is determined by calculating their total.

  Step 206 is a step in which the sample wind speed value selection processing means 101 or the optimum sample wind speed value selection processing means 105 determines whether or not all combinations of the wind speed of the entry path and the wind speed of the exit path in step 101 have been tried. If all the combinations have been tried (step 206: Y), the process proceeds to step 107, and if there are still untried combinations (step 206: N), the process returns to step 101 described above. By repeating this loop of steps 201 → 202 → 203 → 204 → 205 → 206 → step 201, all combinations of 610,39251 are calculated.

  In step 207, the optimal sample wind speed selection processing means 105 receives that all of the combinations have been tried, and the total power consumption calculation processing means 104 calculates as a candidate among the jet fan device group and the shaft feed exhaust fan device Is the step of selecting as the optimal solution the one with the smallest total power consumption.

In step 208, the wind speed VJ1, VJ2, VJ3, and the like of the jet fan apparatus group that the operation control means 106 brings about the optimum wind speed values of the inlets 1 and 2 and the outlets 1 and 2 determined by the optimum sample wind speed selection processing means 105. The operation control of the jet fan unit group 200 and the vertical feed fan assembly 210 is performed so that the wind velocity VE of the vertical feed fan assembly 210 is obtained.
By the above process steps, the control process using the heuristic search method according to the first embodiment can be performed.

The calculation amount of control processing using the heuristic search method by the above-described road tunnel ventilation control device 100 of the present invention will be roughly evaluated.
In the above-mentioned model, according to the control processing using the heuristic search method by the road tunnel ventilation control device 100 of the present invention, a combination of 610,039,251 is calculated, but in the control processing using the conventional exhaustive search method 108 (108 ( Because it is assumed to be 100 million), the amount of calculation is reduced.
Furthermore, it is also possible to consider changes in the wind speed at the entrance of the tunnel and the wind speed at the exit to fewer steps.
In addition, if the number of jet fan devices and the number of shaft feed exhaust fan devices increases, the number of combinations to be tried does not change in the control processing using the heuristic search method by the road tunnel ventilation control device 100 of the present invention. In the exhaustive search method, the number of jet fan devices 200 and the number of shaft feed exhaust fan devices 210 increase significantly.
Furthermore, in the control processing using the heuristic search method by the road tunnel ventilation control device 100 of the present invention, the search can be performed effectively because the search is performed only when the wind speed restriction range is satisfied.

The example of the road tunnel ventilation control apparatus 100 of this invention concerning Example 2 is shown.
The road tunnel ventilation control device 100 according to the second embodiment of the present invention performs control processing using the improved heuristic search method.
In the improved heuristic search method of the second embodiment, it is assumed that the wind speed of the exit is fixed to a value at which the absolute value of the wind speed restriction range is minimum, and the combination selected is limited to the number of combinations that can be taken as the wind speed of the entrance. It is selected from among the combinations. Here, this is referred to as “modified sample wind speed value”.
The constituent elements of the road tunnel ventilation control device 100 of the present invention are the same as in the first embodiment, but the sample wind speed value selection processing means 101 selects an improved sample wind speed value.

FIG. 4 is a flowchart showing the flow of processing using the improved heuristic search method of the road tunnel ventilation control device 100 according to the second embodiment.
As shown in FIG. 4, processing is performed from the following steps.
Step 401 selects a combination of incoming wind speed and outgoing improved wind speed values.
For example, assuming that the absolute values of the inlet and outlet wind speeds do not exceed 5.0 m / s, and if the changeable values are 0.05 m / s each, the outlet 1 is -1.0 m / s, the outlet 2 is a fixed value of -0.5 m / s, and then the wind speed values of the entry paths 1 and 2 are sequentially started from the minimum value so that all combinations are sequentially selected so that all the combinations will be round-robin If it is increased, all combinations corresponding to the "modified sample wind speed value" can be hit.
Note that, as described later, by repeating the loop from step 406 to step 401, combinations of wind speeds of the following inflow and outflow paths will be sequentially selected.
Entry: V1 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
V5 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
Outgoing path: V4 [m / s] = -1.00 (1 Case)
V6 [m / s] = -0.50 (1 Case)
That is, a combination of 91 × 91 × 1 × 1 = 8281 will be sequentially selected, but first, one selected combination is selected as the “improved sample wind speed value” for the input and output paths, step 402 Transition to

  In step 402, the jet fan group calculation processing means 102 calculates the wind speed distribution (V1 to V6) in the tunnel based on the improved sample wind speed value selected by the sample wind speed selection processing means 101 in step 401 above. It is a step. The process is similar to that of step 202 in FIG.

  Step 403 calculates the wind speeds VJ1, VJ2, VJ3 of the jet fan group 200A, B, C by the jet fan group calculation processing means 102 from the wind speed distribution (V1 to V6) of each section obtained in step 402. It is a step.

  Step 404 is a step of calculating the vertical feed exhaust fan air volume QE and the wind speed VE by means of the vertical feed exhaust fan device calculation processing means 103.

Step 405 is a step of calculating the total power consumption necessary for the operation of the total power consumption calculation processing means 104 from the wind velocity VJ of the jet fan group and the shaft delivery exhaust fan velocity VE calculated in step 403.
Step 405 calculates the total power consumption necessary for the operation of the total power consumption calculation processing means 104 from the wind velocity VJ of the jet fan group calculated in step 403 and the shaft delivery exhaust fan velocity VE calculated in step 404. It is a step to calculate.
If the wind speed VJ of the jet fan group and the wind speed VE of the vertical shaft are determined, the power consumption for rotating the motor is determined by the wind speed, and the total power consumption is determined by calculating their total.

  Step 406 is a step in which the sample wind speed value selection processing means 101 or the optimum sample wind speed value selection processing means 105 determines whether all the combinations corresponding to the “improved sample wind speed value” have been tried in step 401 above. Yes, if all combinations that result in improved sample wind speed values have been tried (Step 406: Y), go to Step 407, and if there are still untried combinations (Step 406: N) above Return to step 401.

Step 407 is a jet fan apparatus among the values calculated by the total power consumption calculation processing means 104 as candidates, since the optimum sample wind speed value selection processing means 105 has tried all the combinations to be the improved sample wind speed values. In this step, the one which minimizes the total power consumption by the group and shaft feed exhaust fan devices is selected as the optimum solution.
In step 408, the wind speed VJ1, VJ2, VJ3, and the like of the jet fan apparatus group that the operation control means 106 brings about the optimum wind speed values of the inlets 1 and 2 and the outlets 1 and 2 determined by the optimum sample wind speed selection processing means 105. The operation control of the jet fan unit group 200 and the vertical feed fan assembly 210 is performed so that the wind velocity VE of the vertical feed fan assembly 210 is obtained.
By the above processing steps, control processing using the improved heuristic search method according to the second embodiment can be performed.

The calculation amount of control processing using the improved heuristic search method by the above-described road tunnel ventilation control device 100 of the present invention will be roughly evaluated.
In the above-described model, according to the control process using the improved heuristic search method by the road tunnel ventilation control device 100 of the present invention, 8281 combinations are calculated, but in the control process using the conventional exhaustive search method 108 (108 ( The calculation amount is dramatically reduced because it is assumed to be 100 million.
Furthermore, it is also possible to consider changes in the wind speed at the entrance of the tunnel and the wind speed at the exit to fewer steps.
The computational complexity of the control process using the improved heuristic search method of the second embodiment is reduced compared to the computational amount of the control process using the heuristic search method of the first embodiment. In the control process using the heuristic search method of the first embodiment, there are two input paths and two output paths, and calculations of 610,039,251 are required, but the improved heuristic search method of the second embodiment is used. In the control process used, the number of combinations is reduced to 8281 combinations because the number of input routes is 2 and the number of output routes is fixed, and the calculation time is about 1/10. In addition, when the traffic volume is small, there is an advantage that the solution is uniquely determined without the need for searching.

Next, simulation results in an actual tunnel are shown.
FIG. 5 is a diagram showing daily changes in inlet and outlet wind speeds selected as optimum sample wind speed values using control processing using the improved heuristic search method of the present invention.
FIG. 6 is a diagram showing a daily change of the jet fan speed and the exhaust fan air volume required to generate the inlet and outlet wind speeds selected as the optimum sample wind speed value.
FIG. 7 is a diagram showing daily changes in total power consumption and exhaust fan air volume by control processing using the improved heuristic search method of the present invention.
Thus, good and stable operation is possible while minimizing the total power consumption.

The example of the road tunnel ventilation control apparatus 100 of this invention concerning Example 3 is shown.
As the third embodiment, a process in the case where a plurality of jet fan device groups exist in one section in a road tunnel will be described.
FIG. 8 is a view showing an example in which a plurality of jet fan device groups exist in one section in a road tunnel.
In this case, in the jet fan group calculation processing means 102, the operating speed of each jet fan group is determined so that the wind speed in the section becomes a predetermined wind speed and the sum of the total power consumption becomes minimum. good.

When a plurality of jet fan device groups exist in one section in the road tunnel, the validity of the processing in the jet fan device group calculation processing means 102 is verified.
In section i in the tunnel, traffic ventilation force (piston effect) Fti according to traffic volume, wall friction force Fri between air flow and wall surface and pressure increase Fji by the rotation of jet fan work, and tunnel cross section is Ai, Assuming that the pressure difference between the inlet and the outlet of the section i is Pi, the relationship of Equation 6 is established.

Further, the velocity of the section i is vi, the velocity of the vehicle is vt, and the velocity of the jet fan is vji. a, b and c are constants.

When the jet fan group becomes two groups as shown in FIG. 8, (Equation 6) is expressed by (Equation 8), and (Equation 7) is expressed by (Equation 9), traffic ventilation force and wall resistance, section pressure The difference does not change.

Therefore, instead of Fji when there is one jet fan device group in the section, when there are two jet fan device groups in the section, Fji = Fji1 + Fji2 and the pressure increase is generated in two groups and the total sum thereof It is good if it becomes.
Therefore, the values of jet fan speeds vji1 and vji2 that generate the jet fan pressure increase Fji = Fji1 + Fji2 necessary for the section i of the wind speed vi with minimum power consumption may be obtained.
Even when the number of jet fans is three or more, the operating wind speed of each jet fan group can be determined in which the power consumption is also minimized.

The example of the road tunnel ventilation control apparatus 100 of this invention concerning Example 4 is shown.
As a fourth embodiment, the case where there are a plurality of vertical shaft exhaust fans in a road tunnel will be described.
FIG. 9 is a diagram showing an example in which there are a plurality of vertical shaft exhaust fans in the road tunnel.
As described above, when there are a plurality of installation locations of the shaft feeding and exhausting fan devices in the road tunnel, the total operating air volume of each shaft feeding and exhausting fan devices is all the entry paths in the shaft feeding and discharge fan device calculation processing means 103. It may be determined to be equal to the total inflow air volume from the output path, and the distribution ratio of the air volume may be selected from among several predetermined distribution ratios in which the total power consumption is minimum.

The air volume QE of the shaft feed exhaust fan device is equal to the air volume flowing into the tunnel from all the inlets and outlets. As shown in (Equation 10), when the number of shaft feed exhaust fan units becomes two as shown in FIG. 9, the sum (total air volume) of the air volume QE1 and QE2 of the two exhaust fans is tunneled from all the entrances and exits It is equal to the amount of air flowing into it.

Therefore, the distribution of QE1 and QE2 which satisfy the equation (10) and minimize the sum of power consumption may be determined, and these may be used as the operating air volume. However, unlike the third embodiment, changing the air flow distribution of the vertical shaft exhaust fan device also changes the section wind speed, which complicates the calculation. Therefore, it is also possible to select a distribution ratio that minimizes the total power consumption from among the distribution ratios of QE1 and QE2 determined in advance.

In addition, there is also a method of obtaining an optimum solution by performing the improved heuristic search shown in the second embodiment by assuming that the shaft delivery exhaust fan device also has a reverse wind speed, and increasing the number of entry paths by one.
Even if the number of vertical feed / discharge fans is three or more, the operating air volume of each vertical feed / discharge fan which minimizes the power consumption can be obtained.

The example of the road tunnel ventilation control apparatus 100a of this invention concerning Example 5 is shown.
A fifth embodiment will be described in which the tunnel is divided into several sub-tunnels, and the control processing of road tunnel ventilation using the improved heuristic search method shown in the second embodiment is applied to each sub-tunnel.
FIG. 10 is a view showing a concept of dividing a complex road tunnel example and applying a control process of road tunnel ventilation using an improved heuristic search method.
When the tunnel is further complicated as shown in the upper drawing of FIG. 10, the tunnel is divided into several subtunnels as shown in the lower drawing of FIG. 10, and the improved heuristic search shown in the second embodiment for each subtunnel By applying the method, the computational cost can be reduced.
The example of FIG. 10 shows the case where dividing points 1 and 2 are provided in the entire tunnel and divided into three sub-tunnels for processing.

The subtunnel 1 and the subtunnel 2 are divided at the dividing point 1 between the sections 4 and 7.
Similarly, subtunnel 1 and subtunnel 3 are divided at division point 2 between sections 6 and 13.
First, the wind speeds V4 and V6 of the division points 1 and 2 are assumed.
Since both the division points 1 and 2 are in the middle of the entire road tunnel, the wind speeds V4 and V6 may fluctuate by the operation of the road tunnel ventilation control device 100a. Here, assuming possible values of the wind speeds of V4 and V6, section 4 of subtunnel 1 is regarded as an exit, and section 7 of subtunnel 2 is regarded as an entrance under the assumption that section 6 of subtunnel 1 Is regarded as an exit, and the section 13 of the subtunnel 3 is regarded as an entrance. Then, the improved heuristic search method is individually applied to each of the subtunnels 1, 2 and 3. From the result, the improved wind speed combinations of the assumed wind speeds V4 and V6 of the division points 1 and 2 are improved. Calculate total power consumption using heuristic search method. Next, this process is performed by changing the combination of the wind speeds V4 and V6 of the division points 1 and 2 to try all combinations of the wind speeds V4 and V6 of the division points 1 and 2, and the minimum total power consumption You should decide

FIG. 11 is a block diagram for explaining the basic configuration of the road tunnel ventilation control device 100a according to the fifth embodiment.
The road tunnel ventilation control apparatus 100a according to the fifth embodiment includes a sample wind speed value selection processing unit 101, a jet fan group calculation processing unit 102, a vertical feed exhaust fan unit calculation processing unit 103, a total power consumption calculation processing unit 104, and an optimum sample. In addition to the wind speed value selection processing means 105 and the operation control means 106, a divided sample wind speed value selection processing means 107 is provided.
Since the sample wind speed value selection processing means 101 to the operation control means 106 may be the same as those described in the first embodiment, the description thereof is omitted here.

  The divided sample wind speed value selection processing unit 107 takes the wind speed of the division point within a predetermined wind speed restriction range according to the traffic volume of the road tunnel, for one or more division points dividing the whole road tunnel into a plurality of subtunnels. Among the values to be obtained, a divided sample wind speed value or a combination thereof is selected. That is, first, among the values which can take the wind speed at the dividing point, a certain value is selected as the "divided sample wind speed value". Thereafter, under the condition of "divided sample wind speed value" at the dividing point selected by the divided sample wind speed selection processing means 107, the dividing point is made an entry path in the inflow sub-tunnel where the car flows in from the dividing point. In the outflow sub-tunnel where the water flows out, the dividing point is regarded as the outgoing path, and according to the procedure described in the second embodiment, the sample wind speed value selection processing means 101, the jet fan device group calculation processing means 102, the vertical feed air exhaust fan device calculation processing means 103, The total power consumption calculation processing means 104 calculates each total power consumption. After that, another value is selected among the values that can obtain the wind speed at the dividing point, and the same processing is repeated, and all possible wind speeds can be calculated as the wind speed at the dividing point. Optimal value calculation can be performed efficiently even for complex road tunnels such as

Hereinafter, the flow of processing by the road tunnel ventilation control device 100a will be described with reference to a flowchart of FIG.
First, we divide division points into subtunnels that are easy to apply improved heuristics. Although it is possible in principle to automatically process the selection itself of this division point, here, it is decided and fixed at the design stage of construction of the road tunnel ventilation control device.

First, the "divided sample wind speed value" is selected by the divided sample wind speed value selection processing means 107 (step 1201).
It is assumed that the absolute value of the wind speed does not exceed 5.0 m / s inside the road tunnel, and the changeable value is to try the combination of the wind speeds of V4 and V6 in 1 m / s steps.
V4 [m / s] = V7 = -5.00, -4.00, -3.00,-2.00, -1.00, 0.00, 1.00, 2.00, 3.00, 4.00, 5.00 (11 Case)
V6 [m / s] = V13 = -5.00, -4.00, -3.00,-2.00, -1.00, 0.00, 1.00, 2.00, 3.00, 4.00, 5.00 (11 Case)
As described later, by repeating the loop from step 1208 to step 1201, an optimum solution is obtained by the improved heuristic search method for each of the combinations of the total 121 described above.
Here, the description will be continued assuming that, for example, a combination of V4 = V7 = 1.00 m / s and V6 = V13 = 2.00 m / s is selected.

Next, we apply the improved heuristic search for each subtunnel.
“Improved sample wind speed value” is selected by the sample wind speed value selection processing means 101 (step 1202).
If the improved heuristic search method is applied, wind speed values can be fixed for division point 1 and division point 2 that are regarded as departure paths.
The combination of the wind speed of the following entrance and exit will be selected one by one.
Entry: V1 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
V5 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
V11 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
V18 [m / s] = 0.50, 0.55, 0.60, ..., 5.00 (91 Case)
Outgoing path: V10 [m / s] = 1.00 (1 Case)
V12 [m / s] = 1.00 (1 Case)
V16 [m / s] = 1.00 (1 Case)
V17 [m / s] = 1.00 (1 Case)
Division point: V4 [m / s] = V7 = 1.00 (1 Case)
V6 [m / s] = V13 = 2.00 (1 Case)

In the subtunnel 1, combinations of 91 × 91 × 1 × 1 = 8281 will be sequentially selected, but first, one selected combination is selected as the “improved sample wind speed value” of the ingress and egress. , And move on to step 1203.
The same processing is performed for the subtunnel 2 and the subtunnel 3.
In step 1203, the jet fan group calculation processing means 102 calculates the wind speed distribution (V1 to V6) in the tunnel based on the improved sample wind speed value selected by the sample wind speed selection processing means 101 in step 1202 above. It is a step. The process is similar to that of step 202 in FIG.

  Thereafter, steps 1204, 1205, and 1206 are processed, and as a result of applying the improved heuristic search method for each subtunnel, the total power consumption is determined for all the improved sample wind speed values. The steps 1204, 1205 and 1206 are the same processes as the steps 403, 404 and 405 shown in FIG. 4 of the second embodiment.

  Step 1207 is a step in which the sample wind speed value selection processing means 101 or the optimum sample wind speed value selection processing means 105 determines whether all the combinations corresponding to the “improved sample wind speed value” have been tried in step 1202 above. Yes, if all combinations that result in improved sample wind speed values have been tried (step 1207: Y), proceed to step 1208, and if there are still untried combinations (step 1207: N) above Return to step 1202.

This step 1202, step 1203, step 1204, step 1205 and step 1206 are processed for all subtunnels.
In the sub-tunnel 1, combinations of 91 × 91 × 1 × 1 = 8281 are sequentially selected, and the one with the lowest total power consumption can be identified. Similarly, the smallest total power consumption can be specified for the subtunnel 2 and the subtunnel 3 as well.
In this example, the optimum solution is obtained for the combination of V4 = V7 = 1.00 m / s and V6 = V13 = 2.00 m / s.

  Step 1208 is a step in which the divided sample wind speed value selection processing means 107 or the optimum sample wind speed value selection processing means 105 determines whether all the combinations corresponding to the “divided sample wind speed value” have been tried in step 1201 above. Yes, if all combinations that result in divided sample wind speed values have been tried (step 1208: Y), go to step 1209, and if there are still untried combinations (step 1208: N) the above step Return to 1201.

Step 1209 is a group of jet fan devices among the items calculated by the total power consumption calculation processing means 104 as candidates since the optimum sample wind speed value selection processing means 105 has tried all combinations to be divided sample wind speed values. And the step of selecting as the optimum solution the one that minimizes the total power consumption by the vertical shaft exhaust fan device.
This results in an optimal solution with the lowest total power consumption for all cases to be tried.

In step 1210, the operation control means 106 provides the optimum wind speed values of the entry and exit paths determined by the optimum sample wind speed value selection processing means 105, the wind speeds of the jet fan group JFG1 to JFG9, the shaft feed exhaust fan units EF1 to EF3. The operation control of each jet fan unit group 200 and vertical shaft feed exhaust fan unit 210 is performed so as to obtain the wind speed.
According to the above processing steps, after the tunnel division processing according to the fifth embodiment is performed, the control processing using the improved heuristic search method can be executed.

Here, after the tunnel division processing by the road tunnel ventilation control device 100a according to the fifth embodiment is performed, the calculation amount of the control processing using the improved heuristic search method will be roughly evaluated.
When the wind speeds of the division points 1 and 2 are eleven as described above, the calculation cost is (8281 + 91 + 91) × 121 = 1024023 (about 106).
If the wind speeds of the dividing points 1 and 2 are expanded to 50 ways, the combination of the wind speeds of the wind speeds V4 and V6 increases to 2500 ways. That is, the calculation cost in this case increases to (8281 + 91 + 91) × 2500 = 21157500 (about 107).

  If tunnel division is not performed, the total number of calculation costs is about 108, assuming that the number of all incoming paths is four, and 91 ways are changed in each incoming path. That is, it can be understood that the tunnel division processing can reduce the total number of calculation costs. In particular, when the wind speed at the dividing point is limited to a certain range, the tunnel dividing process is effective.

  Incidentally, the cases calculated by exhaustive search in the prior art are compared. The number of jet fan groups in this tunnel is nine and the number of exhaust fans is three. If the speed of fluctuation of the wind speed of each jet fan group and the exhaust fan is changed by 100 ways, that is, 102, the total number of calculation costs becomes 1024, and the calculation is virtually impossible. On the other hand, if the improved heuristic search method described in the second embodiment is used, the number of control variables is reduced to four, the computational cost is reduced to about 108, and the tunnel according to the fifth embodiment is further implemented. It can be seen that the computational cost can be reduced to about 106 by combining the division processing.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention can be widely applied as a road tunnel ventilation control device for controlling a road tunnel ventilation system.
It will be understood that various modifications are possible without departing from the technical scope of the present invention. Accordingly, the scope of the present invention is to be limited only by the appended claims.

100 Road tunnel ventilation control device 101 Sample wind speed value selection processing means 102 Jet fan group calculation processing means 103 Vertical shaft delivery exhaust fan apparatus calculation processing means 104 Total power consumption calculation processing means 105 Optimal sample wind speed value selection processing means 106 Operation control means 107 Division sample wind speed value selection processing means 110 sensor section 111 traffic counter 112 wind direction anemometer (AV meter)
113 Fog Permeability Data Measurement Instrument (VI Measurement Instrument)
114 Carbon monoxide concentration data measuring instrument (CO measuring instrument) 114
200 jet fan group 210 vertical shaft exhaust fan system

Claims (6)

(100% search by changing the entry and exit wind speeds)
In a one-way road tunnel having a total number of entrances and exits of 4 or more, the total number of jet fan devices and shaft transmission / exhaust fan devices as ventilation devices to be controlled is 4 or more, and the operation of the ventilation devices is controlled. In the road tunnel ventilation controller,
Sample wind speed value selection processing means for selecting a combination of sample wind speed values from among combinations of values that each of the input path and the output path can take within a predetermined wind speed restriction range;
Jet fan group calculation processing means for calculating the wind speed generated in each section in the road tunnel based on the sample wind speed value, and calculating the operating speed and power consumption of the jet fan apparatus group realizing the wind speed;
Vertical transmission and exhaust fan apparatus calculating and processing means for calculating the operating speed and power consumption of the vertical transmission and exhaust fan apparatus from the total inflowing air volume through all the inlet and outlet paths calculated based on the sample wind speed value ,
Total power consumption calculation processing means for calculating total power consumption for each of the assumed sample wind speed values from the power consumption of each of the jet fan device groups and the power consumption of the vertical transmission and exhaust fan device;
Optimal sample wind speed value selection processing means for variously changing the sample wind speed value within the wind speed constraint range, and selecting the sample wind speed value at which the total power consumption is minimized as the optimal sample wind speed value;
Operation control means for controlling the operation of each of the jet fan device groups and each of the vertical feed air exhaust fan devices so as to achieve the optimum sample wind speed value;
A road tunnel ventilation control device characterized by performing ventilation control in the road tunnel. (Exclusive search by entering wind speed change)
In the sample wind speed value selection processing means, the sample wind speed value of each of the exit paths is fixed to a value with the smallest absolute value within the wind speed restriction range, and the sample wind speed value of each of the entrance paths is the wind speed The road tunnel ventilation control device according to claim 1, wherein the road tunnel ventilation control device is selected freely from within the restriction range. (When there are multiple jet fan device groups in one section)
When the inside of the road tunnel is divided into a plurality of sections divided by the entrance, the exit, the branch section, and the installation place of the vertical shaft feeding and exhausting fan apparatus, a plurality of jet fan apparatus groups exist in one section. When doing so, the jet fan device group calculation processing means of each jet fan device group so that the wind speed in the section becomes a predetermined wind speed and the sum of the total power consumption of the jet fan device group becomes minimum. The road tunnel ventilation control device according to claim 1 or 2, wherein the driving speed is determined. (When there are multiple shaft exhaust fans in the tunnel)
When there are a plurality of installation locations of the shaft delivery and exhaust fan devices in the road tunnel, the total operating air volume of each of the shaft delivery and exhaust fan devices is all the entry paths in the shaft delivery and discharge fan device calculation processing means. The invention is characterized in that it is determined to be equal to the total inflow air volume from the output path, and the distribution ratio of the air volume is selected from among several predetermined distribution ratios in which the total power consumption is minimum. The road tunnel ventilation control device according to or 2. (Tunnel split)
For one or more dividing points dividing the whole road tunnel into a plurality of sub-tunnels, dividing the selected sample wind speed value or a combination thereof from among values which the wind speed of the dividing point can take within a predetermined wind speed restriction range Sample wind speed value selection processing means;
Under the condition of the divided sample wind speed value at the division point selected by the divided sample wind speed value selection processing means, the division point is the entry path in the inflow sub-tunnel where the car flows in when viewed from the division point In the outflow sub-tunnel from which the car flows out, the dividing point is regarded as the outgoing path, and the sample wind speed value selection processing means, the jet fan group calculation processing means, the vertical transmission and exhaust fan device calculation processing means, the total power consumption calculation The total power consumption of each is calculated by the processing means,
The sample wind speed value selection processing means variously changes the sample wind speed value within the wind speed restriction range, and the divided sample wind speed value selection processing means variously changes the wind speed at the dividing point within the wind speed restriction range Determining the optimum sample wind speed value for the entire road tunnel where the total power consumption is minimized,
5. The operation control means controls the operation of the jet fan device group and each of the vertical feed air exhaust fan devices so as to obtain the optimum sample wind speed value determined for each of the subtunnels. Road tunnel ventilation control device according to any of the.   The road tunnel ventilation control according to any one of claims 1 to 5, wherein a part or all of the jet fan device group which is the ventilating device, or the vertical shaft feeding exhaust fan device is a fan device capable of inverter drive operation. apparatus.