JPH06248898A - Tunnel ventilation control device - Google Patents

Abstract

PURPOSE:To improve performances by a method wherein a ventilator control output for maintaining measured mist-permeation ratio and concentration of carbon monoxide in the vicinity of a desired value is computed and cooperative control is performed between each control output to avoid contradiction from occurring in each output. CONSTITUTION:A measured value V1 and a measured value of wind velocity are inputted into a mist-permeation ratio V1.wind velocity control means 6 to compute a control output DELTANVI for jet fans (2-1)-(2-n) by means of fuzzy inference so that the value V1 is maintained near a desired value. Next, a measured value of CO is inputted into a CO control means 7 to compute a control output value DELTANco for the fans (2-1)-(2-n) so that the CO value is maintained within CO upper and lower limit values. And on receipt of the outputs DELTANVI, DELTANco, a cooperative control means 8 outputs a final control output NJFOUT for the fans (2-1)-(2-n) whereupon a jet fan control device 10 starts and stops each fan based on the output. As a result, a stable environment can be maintained even in a tunnel where a traffic snarl often occurs, and an energy efficient operation can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation control device for a tunnel, which controls the pollution concentration by measuring the pollution concentration in the tunnel and operating the number of ventilators operating, and the frequency of congestion is particularly high. Even in a tunnel, it is possible to stably maintain the haze transmittance value (hereinafter, referred to as VI value) and the carbon monoxide concentration (hereinafter, referred to as CO concentration) in the tunnel within an allowable range, and to realize energy-saving operation. The present invention relates to a tunnel ventilation control device.

[0002]

2. Description of the Related Art Generally, for example, in a road tunnel, the exhaust gas of an automobile pollutes the inside of a tunnel. Therefore, in a tunnel having a long length or a high traffic volume, mechanical ventilation is required in order to keep the pollution concentration below an allowable value. Is being carried out.

In this case, there are various kinds of pollutants, but the soot concentration and the CO concentration are often controlled. The soot concentration is generally measured as a VI value. This VI value is a value representing the light transmittance and is 100
The closer to%, the better the visibility and the lower the smoke concentration. A device for measuring this VI value is a VI meter.

In a normal running condition, if the VI value is maintained at the allowable value or more, the CO concentration can be maintained at the allowable value or less in most cases. Therefore, the feedback control for the VI value is mainly performed. . The feedback control for this VI value is usually executed in a cycle of about 5 minutes.

On the other hand, with respect to the CO concentration, when it exceeds a preset upper limit value, the control is interrupted. When the CO control is activated, the number of operating machines is greatly increased by operating all the ventilation machines or increasing the number of machines set in advance.

As a conventional ventilation control method for this kind of road tunnel, for example, there is a method described in Japanese Patent Laid-Open No. 56-64099. That is, this control method sets several levels of management levels above and below the target area of the VI value, and increases the number of operating ventilators when the VI value falls below the management level below the target area. If the management level above the target area is exceeded,
The number of operating ventilators is reduced to maintain the VI value within the target range. It should be noted that the method of controlling the CO concentration is not described.

By the way, such a conventional ventilation control method has no particular problem when there is no congestion in the road tunnel and the vehicle is flowing smoothly at a normal traveling speed. However, traffic congestion is particularly severe in urban areas in recent years, and traffic congestion frequently occurs even in road tunnels.

In the case of a traffic jam, more vehicles are present in the road tunnel than during normal driving, so the CO concentration is likely to rise. On the contrary, the VI value does not deteriorate so much compared to the normal traveling because the amount of soot generated from the large vehicle decreases.

However, in the conventional ventilation control, the VI value is mainly controlled, and the CO control operates when the CO concentration exceeds the preset upper limit value. Therefore, in a road tunnel in an urban area where there is a lot of traffic congestion, there is a problem that the CO concentration often exceeds the upper limit value.

Further, in the conventional ventilation control, when the CO control is activated, all the ventilators are operated or the number of operating ventilation is greatly increased. Therefore, the required power is high and there is a problem from the viewpoint of energy saving.

[0011]

As described above, in the conventional ventilation control method, not only the CO concentration cannot be stably maintained within the permissible range but also the energy saving operation is realized in the tunnel where the congestion frequency is high. There was a problem from the point of view.

It is an object of the present invention to maintain a stable VI value and CO concentration within a permissible range even in a tunnel in which congestion frequently occurs, and to realize energy-saving operation with extremely high reliability. To provide a tunnel ventilation control device.

[0013]

In order to achieve the above-mentioned object, first of all, in the invention described in claim 1, the measured values of the haze transmittance meter and the carbon monoxide concentration meter installed in the tunnel are measured. Based on this, in the tunnel ventilation control device that controls the fume transmittance value and carbon monoxide concentration within the allowable range by operating the ventilator in the tunnel, it is preset with the fume transmittance value measured by the fume transmittance meter. And the target value of the fume transmittance, and based on these, the fume transmittance control means for calculating the control output to the ventilator for maintaining the haze transmittance value near the target value of the haze transmittance, and the carbon monoxide concentration. Enter the carbon monoxide concentration measured by the meter and the preset carbon monoxide concentration upper limit value, and based on these, for the ventilator to maintain the carbon monoxide concentration below the carbon monoxide concentration upper limit value. The control output from the carbon monoxide concentration control means for calculating the control output, the control output from the fume transmittance control means and the control output from the carbon monoxide concentration control means are input, and the control for the fume transmittance value and the carbon monoxide concentration are input. The control output is coordinated so as not to cause a contradiction in control, and a cooperative control means for determining a final control output for the ventilator is provided.

According to the second aspect of the present invention, the ventilator in the tunnel is operated based on the respective measured values of the smoke permeability meter, the wind direction anemometer, and the carbon monoxide concentration meter installed in the tunnel. In the tunnel ventilation control device that controls the smoke transmittance value and the carbon monoxide concentration within the allowable range, the smoke transmittance value measured by the smoke transmittance meter, the wind speed measured by the wind anemometer, and the preset smoke Input the target transmittance value and the preset target wind speed value, and calculate the control output for the ventilator to maintain the haze transmittance value near the target haze transmittance value based on these values. The control means and the carbon monoxide concentration measured by the carbon monoxide concentration meter and the preset upper limit value of the carbon monoxide concentration are input, and the carbon monoxide concentration is set on the basis of these values. Input the carbon monoxide concentration control means for calculating the control output to the ventilator to maintain the value or less, the control output from the fume permeability / wind speed control means and the control output from the carbon monoxide concentration control means, In order to prevent a contradiction between the control for the smoke transmittance value and the control for the carbon monoxide concentration, the control outputs are coordinated and the final control output for the ventilator is determined by a coordinated control means. There is.

Here, particularly as the above-mentioned haze transmittance / wind speed control means, a haze transmittance value deviation which is a deviation between the haze transmittance target value and the haze transmittance measured value, and a deviation between the wind speed target value and the wind speed measured value. The wind speed deviation is calculated, and the control output for the ventilator is calculated by fuzzy reasoning based on these.

[0016]

Therefore, first, in the tunnel ventilation control device according to the first aspect of the invention, the fume transmittance control means:
Enter the measurement value from the haze transmittance meter, and based on the deviation between the preset haze transmittance target value and the haze transmittance measurement value, ventilate the haze transmittance value close to the haze transmittance target value. The control output for the machine is calculated.

In the carbon monoxide concentration control means, the measured value from the carbon monoxide concentration meter is input, and the control output to the ventilator is calculated so that the carbon monoxide concentration does not exceed the preset upper limit value. To be done.

Further, in the cooperative control means, the control output from the fume transmittance control means and the control output from the carbon monoxide concentration control means are input to control the fume transmittance value and the carbon monoxide concentration. So that no contradictions occur
After coordinating the two control outputs, the final control output for the ventilator is determined.

On the other hand, in the tunnel ventilation control device according to the second aspect of the present invention, the haze transmittance / wind speed control means inputs the measurement values from the haze transmittance meter and the wind direction anemometer respectively and is preset. Based on the deviation between the haze transmittance target value and the haze transmittance measured value, and the deviation between the preset wind speed target value and the wind speed measured value, so that the haze transmittance value approaches the haze transmittance target value, The control output for the ventilator is calculated.

Further, the carbon monoxide concentration control means inputs the measured value from the carbon monoxide concentration meter and calculates the control output for the ventilator so that the carbon monoxide concentration does not exceed the preset upper limit value. To be done.

Further, in the cooperative control means, the haze transmittance /
The control output from the wind speed control means and the control output from the carbon monoxide concentration control means are input, and two control outputs of the two control outputs are provided so that the control for the fume transmittance value and the control for the carbon monoxide concentration do not conflict. The final control output for the ventilator is determined in concert.

As described above, even in a tunnel in which congestion frequently occurs, the fume transmittance value and the carbon monoxide concentration can be stably maintained within the allowable range, and energy saving operation can be realized.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a functional block diagram showing an example of the overall configuration when the tunnel ventilation control device according to the present invention is applied to a road tunnel.

In FIG. 1, a plurality of (n) jet fans 2-1 to 2- that are ventilators are provided in a road tunnel 1.
n is installed, and ventilation air is blown into the road tunnel 1 to dilute the pollution concentration. In the case of this example, the ventilation wind is flowing from the right side to the left side in the figure of the road tunnel 1. Such a ventilation system is generally called a vertical flow system.

In the road tunnel 1, a total of 3,
A CO meter 4 and a wind direction anemometer 5 are installed respectively to measure the VI value, the CO concentration, and the wind speed in the road tunnel 1.

On the other hand, the measured values of the VI meter 3 and the anemometer 5 are sent to the VI / wind speed control means 6. Also, C
The measured value of the O meter 4 is sent to the CO control means 7. Further, the control output ΔNVI and CO from the VI / wind speed control means 6
The control output ΔNCO from the control means 7 is passed to the cooperative control means 8, and the control output (operating number) NJFOUT for the jet fans 2-1 to 2-n is determined. A portion 9 surrounded by a broken line in the drawing is the tunnel ventilation control device of this embodiment.

The control output NJFOU from the cooperative control means
T is passed to the jet fan control device 10. Further, the jet fan control device 10 includes the jet fan 2
A start / stop command is output to each of the jet fans 2-1 to 2-n so that the number of operating units -1 to 2-n becomes equal to the control output value NJFOUT received from the cooperative control means 8. There is.

Here, the VI / wind speed control means 6 has the VI value measured by the VI meter 3, the wind speed measured by the wind direction anemometer 5, the preset VI target value, and the preset wind speed. The target value is input, and the control output ΔNVI for the jet fans 2-1 to 2-n for maintaining the VI value near the VI target value is calculated by fuzzy inference based on these values.

Further, the CO control means 7 inputs the CO concentration measured by the CO meter 4 and two preset CO upper limit values having mutually different values, and on the basis of these inputs, CO is set to be equal to or lower than the CO upper limit value. The control output ΔNCO to the jet fans 2-1 to 2-n for maintaining is calculated.

Further, the cooperative control means 8 inputs the control output ΔNVI from the VI / wind speed control means 6 and the control output ΔNCO from the CO control means 7, and controls the VI value and C.
In order not to cause contradiction in the control for O, the respective control outputs ΔNVI and ΔNCO are coordinated, and the jet fan 2-1
~ Final control output for 2-n (number of operating units) NJFOU
It determines T.

Next, the operation of the tunnel ventilation control device of the present embodiment constructed as described above will be described with reference to FIGS.

In FIG. 1, the VI / wind speed control means 6 inputs the VI measurement value and the wind speed measurement value, and the jet fans 2-1 to 2-2 maintain the VI value near the VI target value.
The control output ΔNVI for −n is calculated in 1-minute cycles by fuzzy reasoning. Here, the wind speed measurement value is input in addition to the VI measurement value because the wind speed in the roadway has a great influence on the fluctuation of the VI value. That is, as the wind speed decreases, the VI value also decreases with a delay. Therefore, by monitoring the wind speed, it is possible to prevent the VI value from decreasing to some extent in advance.

In this case, the calculation procedure of the control output ΔNVI is
It is as follows.

(A) Calculation of VI deviation ΔVI = VI-VIref (1) VI: VI measured value [%] VIref: VI target value [%] (b) Calculation of wind speed deviation ΔVr = Vr-Vrref (2) ) Vr: Measured wind speed in the road [m / s] Vrref: Target wind speed in the road [m / s] (c) Fuzzy reasoning First, the VI deviation ΔVI [%] and the wind speed deviation ΔVr [m / s]
[s] is normalized.

ΔVI ← ΔVI / SVI (3) ΔVr ← ΔVr / SVr (4) SVI: Scale factor of ΔVI [%] SVr: Scale factor of ΔVr [m / s] By inputting the calculated ΔVI and ΔVr, the correction amount ΔNVI of the number of operating jet fans is obtained by fuzzy inference.

In this case, the input variables ΔVI and ΔVr
2 shows an example of the membership function for the output variable ΔNVI, and FIG. 3 shows an example of the membership function for the output variable ΔNVI. The output variable ΔNVI is also normalized in the range of -1 to 1.

In FIG. 2 and FIG. 3, the meaning of the label of the membership function is as follows.

NB: Negative Big, NM: Negative Med
ium, NS: Negative Small Z: Zero, PS: Positive Small, PM: Positive Mediu
m, PB: Positive Big As fuzzy rules, for example, the following rules are used.

If ΔVI is NB and ΔVr is NB then Δ NVI is PB. (5) If ΔVI is Z and ΔVr is NB then Δ NVI is PS. (6) If ΔVI is Z and ΔVr is Z then ΔNVI is Z. (7) If ΔVI is NS and ΔVr is PS then Δ NVI is Z. (8) If ΔVI is PB and ΔVr is PB then Δ NVI is NM. (9) Where (5) above The fuzzy rule of "means that if the VI value is considerably lower than the target value and the wind speed is also significantly lower than the target value, the operating number of the jet fans is increased." Further, the fuzzy rule (6) means "if the VI value is close to the target value and the wind speed is considerably low, the operating number of jet fans is slightly increased." Even if the VI value is close to the target value, if the wind speed is low, the VI value is likely to decrease with a delay.
In the rule of (6), in order to prevent VI reduction in advance,
The number of jet fans operating is increasing.

FIG. 4 shows a table of such fuzzy rules. In Figure 4, fuzzy rules (5)
The area corresponding to is the shaded area.

Fuzzy inference is a generally known method, and is described in the following document, for example.

"Michio Sugano:" Fuzzy control ", Nikkan Kogyo Shimbun (1988)) Finally, the correction amount ΔNVI of the jet fan operating number calculated by the fuzzy inference in this way is a normalized value. , It is returned to the actual scale by the following formula.

ΔNVI ← SNVI · ΔNVI (10) SNVI: Denormalization coefficient of ΔNVI Next, the CO control means 7 will be described.

The CO control means 7 has a CO upper limit value 1 and a CO upper limit value 2 as control values, and when the CO measured value exceeds the CO upper limit value 1, the operating number of jet fans is ΔNCO1.
It increases by (setting value), and the CO measurement value is the CO upper limit value 2
When it exceeds, it increases by ΔNCO2 (set value). When this is expressed by an equation, it becomes as follows.

ΔNCO2 (when COU2 <CO) ΔNCO = ΔNCO1 (when COU1 ≦ CO <COU2) (11) 0 (when CO <COU1) COU2: CO upper limit value 2 [ppm] (example: 70 ppm) COU1 : CO upper limit value 1 [ppm] (Example: 50 ppm) ΔNCO2: Set value of correction amount of jet fan operating unit [units] ΔNCO1: Set value of correction amount of jet fan operating unit [units] That is, CO allowable value is normal Since it is 100 ppm, the upper limit value for control is set to 50 ppm or 70 ppm as in the above example so as not to exceed this allowable value. The CO control is also executed in a 1-minute cycle.

Next, the cooperative control means 8 will be described.

In the cooperative control means 8, the control output ΔNVI from the VI / wind speed control means 6 and the control output ΔNCO from the CO control means 7 are input, and the final control output to the jet fans 2-1 to 2-n. NJFOUT is decided.

That is, the correction amount ΔNJF of the number of operating jet fans is determined by the following equation.

ΔNJF = max (ΔNVI, ΔNCO) (when ΔNCO> 0) ΔNJF = ΔNVI (when ΔNCO = 0) (12) ΔNVI: VI / output value of wind speed control means 6 [unit] ΔNCO: CO control Output value of unit 7 [unit] Finally, the control output NJFOUT for the jet fans 2-1 to 2-n is calculated by the following equation.

NJFOUT = NJF + ΔNJF (13) NJF: Number of operating jet fans at the time of control output calculation [units] In the present embodiment, after changing the operating number of jet fans, wait for the set effect. During the time, the number of operating jet fans 2-1 to 2-n is not changed. This effect waiting time is about 10 minutes. This effect waiting time is provided because the effect of improving the VI value and CO concentration due to the operation of the jet fans 2-1 to 2-n does not appear immediately.

Next, the control output NJF from the cooperative control means 8
OUT is sent to the jet fan control device 10. Accordingly, in the jet fan control device 10, each of the jet fans 2-1 to 2-n is controlled so that the number of operating jet fans 2-1 to 2-n becomes equal to the control output value NJFOUT received from the cooperative control means 8. A start / stop command is output to.

As described above, in this embodiment, the ventilator in the road tunnel 1 uses the measured values of the VI meter 3, the CO meter 4, and the anemometer 5 installed in the road tunnel 1. In a tunnel ventilation control device that controls a certain jet fan 2-1 to 2-n to control the VI value and CO within an allowable range, the VI value measured by the VI meter 3 and the wind direction anemometer 5 were measured. Wind speed and preset V
A jet fan 2-1 for inputting an I target value and a preset wind speed target value and maintaining the VI value near the VI target value by fuzzy inference based on these values.
VI-wind speed control means 6 for calculating the control output ΔNVI for 2 to 2-n, the CO concentration measured by the CO meter 4 and two preset CO upper limit values different from each other are input, and based on these CO control means 7 for calculating the control output ΔNCO to the jet fans 2-1 to 2-n for maintaining the CO below the CO upper limit value, the control output ΔNVI from the VI / wind speed control means 6, and the CO control means. 7
The control output ΔNCO from the jet fan 2 is input so that the control outputs ΔNVI and ΔNCO are coordinated so that the control for the VI value and the control for the CO do not conflict with each other.
Final control output (operating number) N for -1 to 2-n
It is composed of a cooperative control means 8 for determining JFOUT.

Therefore, the calculation of the VI / wind speed control and the CO concentration control is executed in a 1-minute cycle, and the output of each control is taken in by the cooperative control means 8 and the jet fan 2 is operated in cooperation.
Final control output (operating number) N for -1 to 2-n
Since JFOUT is determined, it becomes possible to stably maintain not only the VI value but also the CO concentration within the allowable range even in road tunnels in urban areas where there is heavy traffic. At the same time, unlike the conventional control, an extreme increase in the number of jet fan operating units is not performed, so it is possible to contribute to energy saving operation.

In this case, in this embodiment, since fuzzy control is applied as the VI / wind speed control, the following effects can be obtained in particular.

That is, the tunnel ventilation process is a distributed constant system with a large dead time because it is accompanied by advection and diffusion of pollutant concentration. Moreover, since it is a field where a strict dynamic model has not been established, it is difficult to apply modern control theory such as optimal control based on a mathematical model. On the contrary,
Fuzzy control does not depend on a mathematical model, and qualitative knowledge acquired by an operator empirically can be used for control in the form of fuzzy rules.

In the conventional feedback control, for example, P
ID control is used, but PID control is basically
This is a control system with one input and one output (input: VI value, output: number of jet fans operating).

On the other hand, in this embodiment, by applying the control based on the fuzzy inference, the wind speed in the roadway, which has a great influence on the decrease of the VI value, is also input, and the two input and one output (input: VI value and The wind speed in the roadway and the output: the number of jet fans operating) make up the control system. As a result, the VI value can be maintained near the target value with higher accuracy than in the past. For example, when the wind speed in the roadway decreases, the VI value often decreases after a delay of several tens of seconds. However, in this fuzzy control, the wind speed in the roadway is also monitored. It is possible to increase the number of operating vehicles and prevent the VI value from decreasing.

Further, if the wind speed in the roadway is considerably higher than the target value, there is a high possibility that it will recover immediately even if the VI value is a little low. Therefore, the operating number of jet fans is not increased and the operating number is not increased. Therefore, it is possible to reduce the useless operation of the jet fan, and it is possible to contribute to the energy saving operation.

As described above, according to this embodiment, the VI value and the CO concentration can be stably maintained within the permissible range even in the road tunnel 1 in the urban area where there are many traffic jams and the CO concentration is apt to deteriorate. Moreover, since the number of jet fans that suddenly increases is reduced compared to the conventional case, it is possible to contribute to energy saving operation.

The present invention is not limited to the above embodiment, but can be implemented in the same manner as described below.

(A) FIGS. 5 and 6 are views showing another embodiment of the present invention.

FIG. 5 shows an example of a road tunnel called a semi-transverse type. In FIG. 5, 11 is a road tunnel, and the car and the ventilation wind flow from the left to the right in the figure. In addition, in the air supply tower 12, the air supply tower 13, and the exhaust tower 14,
Blowers and exhaust fans are installed, and the numbers are as follows.

The number of blowers installed in the air supply tower 12: 3 The number of blowers installed in the air supply tower 13: 3 The number of blowers installed in the exhaust tower 14: 3 The air sent from the towers 12 and 13 by the blower passes through the air supply duct 15 and is supplied into the road tunnel 11.

That is, in the above-described embodiment, the VI value and the CO concentration are controlled by operating the number of operating jet fans, but in the case of the road tunnel 11 as shown in FIG. The number of blowers and exhaust fans installed in the exhaust tower 14 is controlled.

Further, in order to apply the present invention to such a road tunnel, the concept of notch is introduced. Figure 6 shows the number of operating fans and blowers in the form of notches.
Is. Various operating combinations other than those shown in FIG. 6 are conceivable, but here, only typical combinations are extracted and the number of operating fans and exhaust fans increases as the notch level increases. ing. For example, notch 5
Means that two air blowers of the air supply tower 12, three air blowers of the air supply tower 13 and three air exhausters of the exhaust air tower 14 are operated.

In this embodiment, the VI ·
Wind speed control means 6, CO control means 7, and cooperative control means 8
Each control output of is calculated as a notch. However, the calculation method is exactly the same as that of the above-mentioned embodiment.

In the case of the present embodiment, the control output from the cooperative control means 8 is a notch, so the function of converting from the notch to the operating number of blowers and exhaust fans is added after the cooperative control means 8. .

(B) In each of the above-mentioned embodiments, the wind speed measurement value is input to the VI / wind speed control means 6 in addition to the VI measurement value because the wind speed in the road greatly affects the fluctuation of the VI value. Therefore, the VI value is prevented from decreasing to some extent in advance by monitoring the wind speed, and this is not an essential item of the present invention and may be used as necessary.

(C) In each of the above embodiments, fuzzy inference is applied as the control operation in the VI / wind speed control means, but the present invention is not limited to this, and the PID control operation and other well-known control operations are also applied. The same effect as the above case can be obtained.

(D) In each of the above embodiments, the case where the ventilator is a jet fan has been described, but it goes without saying that the invention is not limited to this.

[0072]

As described above, according to the present invention, based on the respective measured values of the smoke permeability meter, the carbon monoxide concentration meter (and the wind direction anemometer) installed in the tunnel, In a tunnel ventilation control device that controls the fume transmittance value and carbon monoxide concentration within the allowable range by operating the ventilator, the fume transmittance value measured by the fume transmittance meter and the wind speed measured by the wind direction anemometer. And) preset haze transmittance target value and (preset wind speed target value)
Input, and based on these, the fume transmittance (.wind speed) control means that calculates the control output to the ventilator to maintain the haze transmittance value near the target value of the haze transmittance, and measured by the carbon monoxide concentration meter Input the specified carbon monoxide concentration and preset carbon monoxide concentration upper limit value, and calculate the control output for the ventilator to maintain the carbon monoxide concentration below the carbon monoxide concentration upper limit value based on these The control output from the carbon monoxide concentration control means, the fume transmittance (.wind speed) control means, and the control output from the carbon monoxide concentration control means are input to control the fume transmittance value and the carbon monoxide concentration. Since the control outputs are coordinated so as not to cause a contradiction in control, and coordinated control means for determining the final control output for the ventilator is provided, the tongue with a high frequency of congestion is generated. Also in Le, a VI value and CO concentration was maintained stably within an acceptable range, yet high tunnel ventilation control apparatus extremely reliable which can realize energy saving operation can be provided.

[Brief description of drawings]

FIG. 1 is a functional block diagram showing an example of the overall configuration when a tunnel ventilation control device according to the present invention is applied to a road tunnel.

FIG. 2 is a diagram showing an example of a membership function used in fuzzy control in the VI / wind speed control means 6 in the embodiment.

FIG. 3 is a diagram showing an example of a membership function used in fuzzy control in the VI / wind speed control means 6 in the embodiment.

FIG. 4 is a diagram showing an example of a fuzzy rule table used in fuzzy control in the VI / wind speed control means 6 in the embodiment.

FIG. 5 is a schematic diagram showing a configuration example of a target tunnel according to another embodiment of the present invention.

6 is a diagram showing an example of a correspondence relationship between notches and the number of operating ventilators in FIG.

[Explanation of symbols]

1 ... Road tunnel, 2-1 to 2-n ... Jet fan,
3 ... Fume transmittance meter (VI meter), 4 ... Carbon monoxide concentration meter (CO meter), 5 ... Wind anemometer, 6 ... VI / wind speed control means, 7 ... CO control means, 8 ... Coordination control means, 9 … Tunnel ventilation control device, 10… Jet fan control device, 11
… Road tunnels, 12, 13… Air supply towers, 14… Exhaust towers,
15 ... Air supply duct.

Claims (3)

[Claims] 1. A ventilator in the tunnel is operated based on the measured values of a haze transmittance meter and a carbon monoxide concentration meter installed in the tunnel to allow the haze transmittance value and the carbon monoxide concentration. In the tunnel ventilation control device for controlling within the range, the haze transmittance value measured by the haze transmittance meter and the preset haze transmittance target value are input, and the haze transmittance value is based on these values. Fume transmittance control means for calculating a control output to the ventilator to maintain the transmittance near a target value, carbon monoxide concentration measured by the carbon monoxide concentration meter and a preset carbon monoxide concentration upper limit Value, and based on these values, a carbon monoxide concentration control means for calculating a control output for the ventilator for maintaining the carbon monoxide concentration below the carbon monoxide concentration upper limit value, Note that the control output from the haze transmittance control means and the control output from the carbon monoxide concentration control means are input, and the control for the haze transmittance value and the control for the carbon monoxide concentration do not conflict with each other. A tunnel ventilation control device comprising: a coordinated control means for coordinating control outputs and determining a final control output for the ventilator. 2. Based on the respective measured values of the haze transmittance meter, wind direction anemometer, and carbon monoxide concentration meter installed in the tunnel,
In a tunnel ventilation control device for controlling a smoke transmittance value and a carbon monoxide concentration within an allowable range by operating a ventilator in the tunnel, a smoke transmittance value measured by the smoke transmittance meter and the wind direction anemometer. By inputting the wind speed measured by and the preset haze transmittance target value and the preset wind speed target value, based on these, to maintain the haze transmittance value near the haze transmittance target value Fume permeability and wind speed control means for calculating the control output to the ventilator, and input the carbon monoxide concentration measured by the carbon monoxide concentration meter and the preset carbon monoxide concentration upper limit value, based on these Carbon monoxide concentration control means for calculating a control output to the ventilator for maintaining the carbon monoxide concentration below the carbon monoxide concentration upper limit value, and the fume transmittance The control output from the wind speed control means and the control output from the carbon monoxide concentration control means are input, and the control output of each of the control outputs is adjusted so that the control for the haze transmittance value and the control for the carbon monoxide concentration do not occur. A tunnel ventilation control device comprising: a cooperative control unit that cooperates and determines a final control output to the ventilator. 3. The haze transmittance / wind speed control means includes a haze transmittance value deviation which is a deviation between the haze transmittance target value and a haze transmittance measured value, and a deviation between the wind speed target value and a wind speed measured value. 3. The tunnel ventilation control device according to claim 2, wherein each of the wind speed deviations is calculated and the control output for the ventilator is calculated by fuzzy inference based on the calculated wind speed deviations.