JP3289068B2 - Vehicle detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle detecting device, and more specifically, is installed at, for example, an entrance of a parking lot, and issues a parking ticket and the like and opens a car gate when a car or the like is detected. The present invention relates to an improvement in a vehicle detection device used in a vehicle traffic control device that allows a vehicle to pass through.

[0002]

2. Description of the Related Art At the entrance of a parking lot, for example, a car gate that can be opened and closed on a traveling path of a car or the like is arranged, and a parking ticket processing machine that issues a parking ticket is installed on the front side of the car gate. And when the car comes to the predetermined position, the tip of the parking ticket jumps out of the parking ticket processor,
When the parking ticket is pulled out, a car gate is opened by a control signal from the parking ticket processing machine that detects the parking ticket, and the vehicle can pass (enter).

[0003] As a vehicle detecting device for automatically detecting that the above-mentioned automobile has arrived at a predetermined position, coils are buried at a plurality of points in the ground on the traveling path, and the principle of electromagnetic induction is utilized. There is one that detects the arrival of an automobile above the coil.

[0004] Further, although not provided at the entrance of a parking lot, another vehicle detection device is, for example, an ultrasonic sensor having a directivity directed downward on the ceiling surface of a highway gate. There is also.

[0005]

In the above-described conventional vehicle detection device, it is necessary to embed the coil and the like in the ground in the traveling path and to perform back-filling, and the installation work is complicated. The above-mentioned problem becomes more remarkable because the surface of the traveling path on which the detection device is installed is usually covered with asphalt or the like. In the case of the latter, a tall support for supporting the ultrasonic sensor at a high place is required, which is not suitable for installation at an entrance of a parking lot or the like, as well as repair and replacement of the ultrasonic sensor. In addition, there is a problem that maintenance work such as inspection must be performed at a high place.

The present invention has been made in view of the above-mentioned background, and an object of the present invention is to facilitate installation work,
Another object of the present invention is to provide a vehicle detection device that can easily perform maintenance processing after installation.

[0007]

In order to achieve the above object, a vehicle detection device according to the present invention is provided with a car gate installed on a side of a traveling path of a vehicle to control the traveling of the vehicle, The vehicle detection device is installed in a vehicle traffic control device including a vehicle ticket processing machine that is disposed in front of the vehicle and is disposed on a side of the traveling path and processes a vehicle ticket such as a parking ticket or a toll ticket. A first distance detection device installed near the vehicle ticket processor to detect a distance to an object on the travel path; and a first distance detection device installed near the car gate and detects a distance to the object on the travel path. A second distance detecting device to detect, distance information detected by the first distance detecting device, distance information detected by the second distance detecting device ,
The change amount of the distance information detected by the first distance detecting device
And a change in distance information detected by the second distance detecting device.
Discriminating means for discriminating the type of the object on the traveling path based on the quantity .

Another solution is to move the vehicle forward.
A carge installed on the side of the road to control the progress of the vehicle
And the front of the car gate and
It is installed on the side to process vehicle tickets such as parking tickets and toll tickets.
Installed in a vehicle traffic control device consisting of a
Vehicle detection device, wherein the car gate or the
Installed near at least one of the ticket processing machines for vehicles
The ultrasonic wave is transmitted to the object on the traveling path, and the ultrasonic wave is transmitted from the object.
First reflection type object detection device for detecting reflection intensity of radiation
And at least the car gate or the ticket processing machine for vehicles.
Is also installed near one of the objects on the traveling path,
Ultrasonic waves in a direction different from that of the first reflection type object detection device
To detect the reflection intensity of the reflected wave from the object.
A second reflective object detection device;
Reflection from the object detected by the second reflection type object detection device
Wave reflection intensity and time series change amount of reflected wave from the object
Discriminating means for discriminating the type of the object on the traveling path by using
May be provided .

[0009]

Since the detection device is installed near a known device such as a car gate or a ticket processing machine for a vehicle, a special installation space is not required, and the installation work is easy, and the maintenance work after the installation is performed. Also becomes easier.

Then, automobiles, motorcycles, humans, etc.
Since the distance from the detection device to the object, the change thereof, and the reflection intensity are different from each other, the determination can be made by appropriately using the different information.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of a vehicle detection device according to the present invention will be described below in detail with reference to the accompanying drawings. As shown in FIG. 1 and FIG. 2, this example shows an example of installation at the entrance of a parking lot. That is, in normal times, the car gate 2 is installed so as to block the traveling path 1 on the entrance side of the parking lot. The car gate 2 is disposed orthogonally to the traveling path 1 and includes a gate 2a for controlling the traveling of the car 3 and a main body 2b to which the base end of the gate 2a is attached. It is installed at a predetermined position on the side of the traveling path 1, and swings the gate 2 a to open and close to allow or block the passage of the automobile 3.

On the front side of the car gate 2, a parking ticket issuing machine 4 as a vehicular ticket processing machine is installed at a predetermined distance d. This parking ticket issuing machine 4 makes the tip of the parking ticket pop out when the car 3 comes to a predetermined position, and when the parking ticket is taken out, opens the car gate 2 in conjunction with the parking ticket so that the car 3 can pass through. I do. Normally, when the driver (driver's seat) of the car 3 is located at the parking ticket issuing machine 4, the front face of the car 3 is located at the gate 2.
a about 2 m so as not to abut on a, and to prevent the gap between the front surface and the gate portion 2 a from opening excessively.

In the present invention, when the automobile 3 arrives at the predetermined position, it is detected and the parking ticket issuing machine 4 is automatically detected.
Can be operated, and when a person other than an automobile or a motorcycle comes to the predetermined position, the parking ticket issuing machine 4 is not operated (note that the motorcycle is detected and corresponded if necessary. May be disposed near the car gate 2 and the parking ticket issuing machine 4.

That is, three reflective ultrasonic sensors S1, S2, S3 having different directions of directivity are provided to the parking ticket issuing machine 4.
Is installed. The middle sensor S2 has directivity in a direction perpendicular to the direction of the traveling path 1, that is, right beside, and the sensors S1,
S3 has directivity directed obliquely outward. As a result, the directivity of the three sensors S1 to S3 spreads like a fan, and the degree of the spread is such that the three sensors S1 to S3 can detect the automobile 3 at the same time, It is set to such an extent that the sensors cannot detect at the same time. In the case of a two-wheeled vehicle, there is a possibility that the three sensors simultaneously detect the two-wheeled vehicle from the relationship between the overall length and the passing position, but there is no problem because it can be easily determined from other detection information.

The car gate 2 is provided with two reflection type ultrasonic sensors S4 and S5 having different directions of directivity. The direction of directivity of the two ultrasonic sensors S4 and S5 is determined by the gate unit. It faces the direction of expansion at the boundary 2a.
One ultrasonic sensor S4 whose directivity is directed to the parking ticket issuing machine 4 side is mainly used for detecting a front part of the automobile 3, and the other ultrasonic sensor S5 is mainly used for automobile. By detecting the rear side of the vehicle 3, the vehicle 3 is used to confirm that the vehicle 3 has passed through the car gate 2. The ultrasonic sensor S4 is connected to the car 3
In this example, the angle θ from the side of the traveling path 1 is about 45 degrees so that the front of the car 3 can be detected when the head of the car is located at the installation site of the parking ticket issuing machine 4. Then, each of the ultrasonic sensors S1 to S4 is used for discriminating the type of the object (such as the presence or absence of an automobile), and the ultrasonic sensors S2 to S5 (particularly, S
5) is used for opening and closing control of the car gate 2.

Further, each of the ultrasonic sensors S1 to S5
As shown in FIG. 2, both have directivity in a substantially horizontal direction, and the height h can be detected regardless of the vehicle type.
It is set at an appropriate position that is neither too high nor too low. Further, each of the ultrasonic sensors S1 to S5 is the same as that shown in FIG.
As shown in (B), a wave transmitting drive unit 6 for emitting ultrasonic waves in a predetermined direction and a wave receiving drive unit 7 for detecting reflected waves that have been returned from the emitted ultrasonic waves hit the object a. The two driving means 6 and 7 are connected to a control means 8 which is a discriminating means. The control means 8 detects the distance from each of the ultrasonic sensors S1 to S5 to the object a to be detected and the reflection intensity of the object a,
Based on the detection result, it can be determined whether or not the object a is an automobile. As a specific detection method, as shown in FIG. 3 as an example, an ultrasonic wave is emitted by operating the transmission driver 6 in accordance with the synchronization pulse,
The distance is calculated from the delay time t until the reflected wave that has returned after hitting the object a is received by the wave receiving drive means 7, and
There is a method of detecting the reflection intensity by detecting the maximum level of the received signal, but the method is not limited to this.

By the way, the configuration of the above embodiment is the first
A vehicle that detects a vehicle using a plurality of distance detection devices (the first distance detection device includes ultrasonic sensors S1 to S3 and the second distance detection device includes an ultrasonic sensor S4) according to the present invention. A detecting device and a reflection type object detecting device (ultrasonic sensors S1 to S2) for measuring the reflection intensity of the object according to the second invention.
4) can be executed simultaneously with a vehicle detection device that detects a vehicle using any one of the above-described methods. Or the combination of the two can be implemented.

Now, the first embodiment of the present invention will be described for convenience of explanation. Of the signals obtained from the ultrasonic sensors S1 to S5, a signal related to distance, that is, a signal transmitted after transmitting the transmission pulse in FIG. The transmission time t is used until a wave pulse is emitted. The shorter the transmission time t, the shorter the distance from the sensor to the object. The longer the transmission time t, the longer the distance to the object, and the sensor if there is no reception pulse. Is off because there is no object within the directivity range of.

FIG. 4A to FIG. 4C show changes in detection signals from the ultrasonic sensors S1 to S5 when the automobile 3 moves on the traveling path 1 at a constant speed. Become like That is, as shown in FIG. 2A, when the automobile 3 passes from the parking ticket issuing machine 4 side of the traveling path 1, first, the ultrasonic sensor S1 captures the front of the automobile 3 first. , The distance at that time is “far”. And as the car 3 advances, the ultrasonic sensor S1
Since the side of the car 3 is detected, the distance at that time is “close”.

Since the ultrasonic sensors S2 and S3 detect the side surface of the automobile 3 from the beginning of the detection, the result of the detection is "close". Therefore, when the head of the car 3 is located at the installation site of the parking ticket issuing machine 4, the ultrasonic sensor S2
Turns on. At this time, since the directivity of the ultrasonic sensor S4 is oblique toward the automobile 3, the sensor S4
In this case, the automobile 3 can be detected, and the detection result is “far”. When the driver's seat (driver) moves further forward and the position of the parking ticket issuing machine 4 is installed, that is, when the head of the car 3 is located near the installation site of the car gate 2, the car 3 can be detected by the ultrasonic sensor S3. , The detection result is “close”. Moreover, the length of the car 3 is usually 3 to 4 m.
Because of the length, the other ultrasonic sensors S1, S2, and S4 also detect the automobile 3 even when the ultrasonic sensor S3 detects the automobile 3.

Further, when the automobile 3 advances and passes through the car gate 2, the ultrasonic sensor S5 detects the front surface of the automobile 3 and the detection result is "close". Thereafter, when the vehicle 3 further advances, the rear surface of the vehicle 3 goes out of the directivity range of each ultrasonic sensor, and is sequentially turned off. Then, when the car 3 has passed through the car gate 2, only the ultrasonic sensor S5 has issued an ON signal, and then turns OFF.

Note that, as shown in FIGS.
Although the distance detected from each ultrasonic sensor differs depending on the passing position on the traveling path 1 of the car 3, that is, whether the car 3 passes through the center or the side, the timing of issuing the on / off signal is substantially the same.

That is, in the case of a car, the ultrasonic sensors S1 to S4 may be turned on at the same time regardless of the passing position. The traveling path 1 detected by the three ultrasonic sensors S1 to S3 provided in the parking ticket issuing machine 4
The vertical distance from the side edge of the vehicle to the car 3 is almost the same, and the ultrasonic sensor S4 provided on the car gate 2
, The detection result at the beginning of turning on is “far”.

On the other hand, although a specific illustration is omitted, when a human passes on the traveling path 1, the ultrasonic sensor S2 is turned on when the ultrasonic sensor S2 is on regardless of the position where the human passes.
1 and S4 do not turn on at the same time. In the case of a motorcycle, the ultrasonic sensor S4 does not turn on when the ultrasonic sensor S2 is on when passing near, and the ultrasonic sensor S1 turns off when the ultrasonic sensor S3 is on when passing far. become. Further, when passing through the center, there is almost no possibility that the ultrasonic sensors S1 to S4 are turned on at the same time, and there is little change in the detection distance (from “far” to “near”) in the ultrasonic sensors S1 and S4.

Therefore, if the ultrasonic sensors S1 to S4 simultaneously emit ON signals, the control means 8 determines that the vehicle is an automobile, sends a control signal to the parking ticket issuing machine 4 and issues a parking ticket. Do not operate. As a circuit for performing such control, for example, the output of the wave receiving drive means 7 of the ultrasonic sensors S1 to S4 can be input to an AND circuit or the like (FIG. 5A).

Further, in order to suppress erroneous detection when the motorcycle passes through the center of the traveling path 1, the two ultrasonic sensors S1,
The output of S4 is input to, for example, a differentiating circuit, and when the amount of change exceeds a certain value, it is determined that the vehicle is an automobile. Specifically, the output of the differentiating circuit may be input to the comparator, and when used together with the detection of the AND circuit, the time series timing at which each phenomenon occurs is different. , And the output from the latch and the output from the AND circuit are simultaneously input to another AND circuit or the like (FIG. 5B). Further, as shown in FIG. 1B, the inference means 9 may be linked to the control means 8 and may be obtained by performing fuzzy inference based on a rule created according to the above phenomenon.

On the other hand, in the case of the apparatus using the reflectance according to the second invention, the following is performed. When an ultrasonic wave is transmitted to an object, even if the distance to the object is equal, the intensity of the reflected wave also differs due to the difference in the shape and width of the surface of the object, the angle to the surface, and the like. That is, as shown in FIG. 6, an object having a large area near a uniform plane such as the side and front and rear surfaces of an automobile has the following properties as compared with a motorcycle or a human.

In the case of vertical irradiation on the surface, the reflection level is high (FIG. 10A), and when the light is irradiated obliquely (for example, about 45 degrees), the reflection level is low (FIG. 10B). )). In the case of a two-wheeled vehicle, the reflection level is high in the case of vertical irradiation as in the case of an automobile, but the reflection level is medium in the case of oblique irradiation (FIG. (C)). further,
In the case of a human, the reflection level is lower than that of a motorcycle as a whole, the reflection level is slightly higher in the case of vertical irradiation, and slightly lower in the case of oblique irradiation (FIG. 3D). ). Although the reflection level in the oblique direction may be about 1/10 to 1/50 of that in the case of vertical irradiation, it is a level that can be sufficiently extracted as a signal.

Therefore, the control means 8 can determine the vehicle by detecting the difference in the reflection intensity. And, the judgment of vertical irradiation or oblique irradiation,
This can be easily performed depending on the direction of the directivity of the ultrasonic sensor. That is, in the example shown in FIG.
Reference numerals 3 and 4 denote oblique irradiation, and the ultrasonic sensor S2 performs vertical irradiation. In this example, as each of the ultrasonic sensors, a sensor that only detects the reflection level without obtaining the distance may be used, and it is not necessary to provide five ultrasonic sensors as in the above configuration. Is to install a plurality, and preferably to detect both vertical irradiation and oblique irradiation.

As another method, the following principle can be used. That is, the intensity y of the reflected wave detected by the wave receiving drive unit 7 decreases as the distance x to the object increases. Therefore, even if the object is a person with a small reflection level, if the object is close to the ultrasonic sensor, the intensity of the reflected wave received by the wave receiving drive means 7 will be reflected from an automobile having a large reflection level at a position distant from the ultrasonic sensor. May be higher than the wave intensity. FIG. 7 shows the correlation between the intensity y of the reflected wave, the distance x, and the object at the ultrasonic sensors S1 and S2. It should be noted that FIG. 4A shows S after the ultrasonic sensor S1 is turned on.
2 is an average level until the ultrasonic sensor S2 is turned on, and FIG. 4B is an average level for three times measured according to the sampling time after the ultrasonic sensor S2 is turned on.

Therefore, the control means 8 performs an appropriate coordinate transformation on the given detection result, for example, "(x + a) (y
By performing “+ b) = constant”, the reflection intensity on the surface of the object can be calculated, and the vehicle and the rest can be easily separated. In addition, without performing such coordinate conversion, it can be obtained by performing fuzzy inference according to a predetermined rule including two outputs of the distance and the reflection intensity and one output indicating whether or not the inference result is like an automobile. In this example, a single ultrasonic sensor (which can detect both the reflection intensity and the distance) can detect an automobile. However, in order to improve the detection accuracy, a plurality of ultrasonic sensors are required.

Further, the vehicle can be detected by measuring the time series change of the reflection level. That is, for example, the reflection levels after the ultrasonic sensors S1 and S2 are turned on are as shown in FIGS. 8A and 8B, respectively. That is, as shown in FIG.
In the case of 1, the vehicle is obliquely illuminated, so that the overall level is low. However, as the vehicle moves, the level of the bumper is detected in the middle and the level is slightly increased, and then becomes low. The level of the motorcycle increases as it moves. In the case of a human, the detection time is short, but the level at the time of detection is relatively large. Further, as shown in FIG. 3B, in S2, the level is large because the side of the automobile is irradiated vertically, and the side is uniform, so that the detection level is constant. Also,
In the case of a two-wheeled vehicle, although the detection level is high as in the case of an automobile, the level fluctuation is conspicuous due to severe surface irregularities. Furthermore, in the case of a human, it is turned on only for a short time, and the level is small.

Therefore, the control means 8 can detect an automobile by detecting the detection results (level magnitude and fluctuation status) from each ultrasonic sensor.

In the detecting device using the reflection level described above, the ultrasonic sensors S1,
Although the example using S2 has been described, this is to determine whether or not the vehicle is an automobile as early as possible, and to issue a parking ticket smoothly in the case of an automobile.
Although not specifically shown, other ultrasonic sensors S3, S
4, etc., and the number of ultrasonic sensors to be used is also arbitrary (one or more).

By the way, all of the above four examples can be implemented independently, but in order to further improve the detection accuracy, it is preferable to combine them appropriately. In particular, it is desirable that the first two devices shown in FIGS. 6 and 7 be used in an auxiliary manner so as to contribute to improvement in detection accuracy by being combined with another device. Therefore, one of the combined examples will be described below. Then, in this example, when making a determination in the control means 8,
The fuzzy reasoning is used to infer car-likeness. Further, each of the ultrasonic sensors S1 to S5 has a function of detecting a distance to an object.
Uses an object having a function of detecting the reflection intensity of the object.

First, each membership function is as shown in FIG. First, the distance from the ultrasonic sensor to the object is as shown in FIG. 3A. In this example, the range in which the driver reaches the parking ticket issuing machine 4 or the like by reaching out of the vehicle. Is referred to as “close”, and when a car passes the farthest, it is referred to as “far”. Also, the membership function for determining whether or not the difference between the vertical distances detected by each sensor is equal is as shown in FIG. That is, when the object is a car, the side faces are uniform, and the vertical distances detected by the sensors are equal. And
The reason why the shape of “equal” is trapezoidal and given a width is to take into account that the vehicle travels diagonally. Further, as shown in FIG. 4C, the reflectivity is large or small.
One. The reflectivity referred to here is the above-mentioned “(x +
a) (y + b) = constant ". Then, the inference output is a binary value, like a car or not like a car, as shown in FIG. Also,
The inference rules are as shown in FIG.
The margins indicate the timing of performing each process.

The control means 8 performs the fuzzy inference based on the membership functions and the inference rules and the determination as to whether or not the vehicle is an automobile using the determination means in each of the above embodiments at a high speed and accurately. The basic determination procedure is as shown in the flowchart of FIG.

That is, first, it is determined whether or not the ultrasonic sensor S1 has been turned on. If the ultrasonic sensor S1 has been turned on, this is used as a trigger to perform actual discrimination control. However, if the detection result at the time of ON in S1 is “close”, it is excluded because there is a possibility that a human has passed (there is no such output in the case of a car) (S101). Then, based on the information from S1 until S2 is turned on, it is determined whether or not the detected object has changed like an automobile. If not, it is determined that the detected object is not an automobile, and the determination processing is performed. Is completed (S102, S103). For this determination, for example, the above-described chronological change in the reflection level can be used (see FIG. 8A).

Then, if S2 detects an object, FIG.
It is determined whether or not it is "car-like" using the rule shown in FIG. 0 (S104). If it is determined that it is "car-like", an issuance process is performed to issue a parking ticket as soon as possible (S105).

On the other hand, if it is determined in step 104 that the vehicle is not like a car, it is determined whether or not the vehicle is not like a car by using rules (S10).
6) If it is determined that the vehicle is not like an automobile, the determination process ends.

If it is determined in step 106 that the vehicle is not like an automobile, that is, it is determined that there is a possibility of an automobile, until S3 is turned on, for example, as shown in FIG.
(B) The time-series change of the reflection level of S2 shown in FIG.
If it is determined that the vehicle is not like an automobile, the determination process ends (S107, S108).

If the vehicle-like situation continues until S3 is turned on, the rule shown in FIG.
Is used to infer whether the vehicle is "car-like" or not (S
109) If it is determined that the vehicle is "car-like", the process proceeds to step 105 where parking ticket issuance processing is performed. If it is determined that it is "not like a car", the determination process ends.

After the parking ticket issuance processing is performed, a gate passing processing is performed next (S110). That is, when the parking ticket is pulled out from the parking ticket issuing machine 4, the gate unit 2a is opened to allow the vehicle to pass. Then, the on / off state of each of the sensors S2 to S5 is monitored during the movement of the vehicle, and it is determined whether or not the vehicle has completely passed through the car gate 2 (only S5 is on). .

In the above-described embodiment, an example in which the vehicle is provided at the entrance of the parking lot has been described. However, the present invention is not limited to this, and the vehicle may be installed at the entrance of a highway or a toll road. That is, when entering a normal expressway or the like, a pass is handed at the entrance, and when exiting, a predetermined fee is paid based on the pass, but a car gate with a vehicle detection device of the present invention and By installing the toll ticket issuing machine at the entrance, the toll ticket can be automatically distributed, and the number of personnel can be reduced. In other words, not limited to parking lots and highways,
The present invention can be applied to a place where a device for controlling traffic of a vehicle by opening and closing a car gate can be applied.

Further, in each of the embodiments described above, an example has been described in which only an automobile is detected. However, by changing a detection rule or the like, "automobiles and motorcycles" can be detected.
It is also possible to perform a discriminating process for discriminating between a human and a person, or to further discriminate between a car and a motorcycle while excluding a person from the detection target, and issue different tickets or the like. In particular, since a motorcycle and a car often have different parking fees and tolls, it is convenient for post-processing such as payment of a fee at the exit side.

Further, in the above-described embodiment, the case where the width of the traveling path is relatively wide has been described. For example, when the width of the traveling path is slightly wider than the width of the automobile (about 2 times less), Accordingly, it is necessary to appropriately change the installation position and the number of the sensors and the direction of the directivity.

Further, as shown in the above-described embodiment, the installation location of each ultrasonic sensor is determined by the car gate 2 and the parking ticket issuing machine 4.
Although it is preferable to attach it, it may be installed in the vicinity. In other words, when it is installed in the vicinity, a separate attaching means is required, but its workability is remarkably improved as compared with the one installed in the ground or installed at a high place.

Further, the reflection type object detection device according to the present invention may be a device which measures a reception level of the reflected wave from the surface of the object, or a device which detects the reflection intensity on the surface of the object. Things can be applied.

[0049]

As described above, in the vehicle detection device according to the present invention, a car gate or a vehicle, which is a known device provided at an entrance of a parking lot or the like, without burying a sensor in the ground unlike the related art. Since the sensor is attached near the ticket issuing machine, the work is easy, and the maintenance work after the installation can be easily performed.

[Brief description of the drawings]

FIG. 1A is a plan view showing a preferred embodiment of a vehicle detection device according to the present invention. (B) is a block configuration diagram thereof.

FIG. 2 is a side view thereof.

FIG. 3 is a diagram for explaining an operation.

FIG. 4 is a diagram for explaining an operation.

FIG. 5 is a circuit diagram illustrating an example of a control unit.

FIG. 6 is a diagram illustrating an example of an operation principle.

FIG. 7 is a diagram illustrating an example of an operation principle.

FIG. 8 is a diagram illustrating an example of an operation principle.

FIG. 9 is a diagram showing each membership function.

FIG. 10 is a diagram showing an inference rule.

FIG. 11 is a flowchart for explaining the operation.

[Explanation of symbols]

 Reference Signs List 1 traveling path 2 car gate 3 car (vehicle) 4 parking ticket issuing machine (vehicle ticket processing machine) 6 transmission drive means 7 reception drive means 8 control means (determination means) 9 inference means (determination means)

Continuation of the front page (56) References JP-B-62-43320 (JP, B1) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08G 1/015 G08G 1/04

Claims (2)

(57) [Claims] 1. A car gate installed on a side of a traveling path of a vehicle to control the traveling of the vehicle, and a parking ticket, a pass ticket, etc. installed on a side of the traveling path in front of the car gate and on the side of the traveling path. A vehicle detection device installed in a vehicle traffic control device including a vehicle ticket processing machine that processes a vehicle ticket of a vehicle, wherein a distance to an object on the traveling path is installed near the vehicle ticket processing machine. A first distance detecting device that detects a distance to a car gate, a second distance detecting device that is installed near the car gate and detects a distance to an object on the traveling path, and a distance information that the first distance detecting device detects. When the distance information detected by the second distance detecting device, the first distance
A change amount of the distance information detected by the separation detecting device;
A determination unit configured to determine a type of an object on a traveling path based on a change amount of distance information detected by the distance detection device. 2. A car gate installed on a side of a traveling path of a vehicle to control the traveling of the vehicle, a parking ticket, a toll ticket, etc. installed on a side of the traveling path in front of the car gate and on a side of the traveling path. A vehicle detection device installed in a vehicle traffic control device including a vehicle ticket processing machine that processes a vehicle ticket of the vehicle, wherein the vehicle detection device is installed near at least one of the car gate and the vehicle ticket processing machine and Ultrasound on objects on the road
And transmitting, the detecting the reflection intensity of the reflected wave from the object
And at least one of the car gate or the vehicular ticket processing machine.
To the object on the traveling path,
Transmits ultrasonic waves in a direction different from that of the first reflection type object detection device.
A second wave that detects the reflection intensity of the reflected wave from the object
A reflective object detecting apparatus, the reflection intensity of the reflected wave from the object to be detected of at least the first and second reflection-type object detecting device, from the object
And a discriminating means for discriminating the type of the object on the traveling path by using a time-series change amount of the reflected wave of the vehicle.