JPH0420519B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field to which the Invention Pertains] The present invention relates to a vehicle type discrimination device installed at a toll collection station on a motorway, and more particularly to a configuration of a device for discriminating motorcycles.

[Prior art and its problems]

Currently, at toll gates of toll expressways, drivers are issued with a magnetic card-type ticket that records information such as the number of axles, number of wheels, vehicle type, gate number, etc. of passing vehicles at the entrance gate, and this ticket is exchanged at the exit gate. The recorded information is compared with the actual status of passing vehicles to prevent illegal traffic and speed up data processing operations. In order to automatically record the information on the pass ticket and perform the verification at the exit gate, a vehicle type identification device is installed at each of the entrance gate and the exit gate. As a vehicle type discrimination device, the device described in Japanese Utility Model Application Laid-Open No. 60-25096 is known.

However, in recent years, there has been a strong public opinion that motorcycles, which were previously included in the classification of ordinary cars in the toll system of toll roads, should be classified separately from ordinary cars, and road administrators have also changed the toll system. However, since the conventional vehicle type identification device described above is configured based on the above-mentioned fee structure, it cannot distinguish between motorcycles. The problem is that it cannot be applied to a new toll system that separates cars from cars. From now on, motorcycles may be referred to simply as ``private cars''.

[Purpose of invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle type discrimination device capable of discriminating between two vehicles by solving the problems of the conventional vehicle type discrimination device as described above.

[Key points of the invention]

In order to achieve the above-mentioned object, the present invention provides first and second sensors each having a band shape that outputs first and second position detection signals corresponding to the position of the pedal pressure when the pedal pressure is applied, and A third belt-shaped belt outputs a pedal pressure detection signal as a binary signal in accordance with the
The sensors are placed on the road surface of the passageway in the order of the first sensor, the third sensor, and the second sensor from the left side in the width direction of the passageway, with the longitudinal direction of each sensor being substantially orthogonal to the vehicle passageway. eleventh and twelfth signal conversion means arranged in a line and further outputting binary signals according to the presence or absence of each of the position detection signals, and binary signals based on the magnitude of each of the position detection signals; The 21st and 21st outputs respectively
22 signal conversion means, and logical operation means for performing a predetermined logical operation using the output signals of the 11th, 12th, 21st, and 22nd signal conversion means and the pedal pressure detection signal,
The present invention provides a vehicle type discriminating device that automatically discriminates a motorcycle based on the output signal of the logical operation means.

[Embodiments of the invention]

Fig. 1 is a configuration diagram of one embodiment of the present invention, Fig. 2 is an explanatory diagram of the arrangement of the main parts shown in Fig. 1, and Fig. 3 is a diagram showing the arrangement of the main parts shown in Fig. 1.
FIG. 2 is an explanatory diagram of the configuration and operating principle of the sensor shown in the figure. In Figures 1 to 3, 1, 2,
Reference numeral 3 denotes a first sensor, a second sensor, and a third sensor, all of which are band-shaped and fixed on the road surface 4a of the vehicle passageway 4 having a predetermined width.
The first sensor 1, the third sensor from the left side in the direction of the arrow
The sensor 3 and the second sensor 2 are arranged in this order, and are arranged in a line so that the longitudinal direction of each sensor is substantially orthogonal to the road passageway 4. The passageway 4 is a vehicle passageway at a tollgate on a toll motorway. As shown in FIG. 3, the sensors 1 and 2 each include a ribbon-shaped conductor 5, a ribbon-shaped resistor 6 arranged to face the conductor, and a rubber in which the conductor 5 and the resistor 6 are embedded. When the X or Y positions are stepped on by the wheels 8 of a vehicle passing through the vehicle passageway 4, the conductor 5 and the resistor 6 come into contact at these positions. , from the sensor 1, an analog voltage signal corresponding to the distance P is outputted from the terminals 101, 102 as the first position detection signal 1a, and from the sensor 2, an analog voltage signal corresponding to the distance P _r is outputted from the terminals 201, 202 to the second position detection signal 1a. The signal is configured to be output as a position detection signal 2a. P is the terminal 101 of sensor 1,
The distance from the end where terminals 102 are provided to the right side of the wheel 8, P _r is the distance from the end where the terminals 201 and 202 of the sensor 2 are provided to the left side of the wheel 8. Since sensors 1 and 2 operate as described above,
These sensors are sensors that, when pressed by the wheels 8, output first and second position detection signals 1a and 2a according to the pressed positions X and Y. The sensor 3 is composed of two conductors 5 arranged opposite to each other and an elastic body 7 in which these conductors 5 are embedded.
Moreover, when pressed by the wheel 8, the two conductors 5, 5 are short-circuited. 301,3
02 is a terminal provided on the sensor 3 to output this short circuit signal. Since this short circuit signal is a signal generated by the pedal pressure of the wheel 8, the sensor 3 is a sensor that outputs a pedal pressure detection signal 3a as a binary signal depending on the presence or absence of pedal pressure.

9 in FIG. 2 is a pedal pressure detection sensor consisting of sensor 1, sensor 2, and sensor 3, and detection sensor 9
, sensors 1, 2, and 3 are arranged on a road surface 4a so that the left and right wheels of an automobile having left and right wheels do not press the same sensor. Reference numeral 10 represents an island forming the vehicle passageway 4, and reference numeral 15 represents a booth installed on the island 10 for issuing passes and the like. On one side of the island 10 is a light emitter 1 that emits a light beam 16 across the vehicle passageway 4.
7 is provided, and the other island 10 is provided with a luminous flux 1
A light receiver 18 for receiving light 6 is provided. The light beam 16 is arranged directly above the pedal pressure detection sensor 9, and is configured to detect a vehicle entering the passageway 4. Vehicle detection signal 1 output from light receiver 18
8a is input to a logic operation means 19, which is housed in the booth 15 and will be described later.

Since the first and second sensors 1 and 2 are configured as described above, the position detection signals 1a and 2a will be in a non-voltage state if the sensors 1 and 2 are not pressed, and will be zero or finite if they are pressed. It becomes a voltage state. Reference numeral 11 denotes an eleventh signal conversion means which receives the position detection signal 1a and outputs an eleventh binary signal 11a depending on whether the signal 1a is in a no-voltage state;
is a twelfth signal conversion means that outputs a twelfth binary signal 12a based on the magnitude of the position detection signal 1a.
In this case, the conversion means 12 converts the signal 12 depending on whether the signal 1a corresponds to P>0.
It is configured to output a. 13 is a 21st signal conversion means to which the position detection signal 2a is input and outputs a 21st binary signal 13a depending on whether the signal 2a is in a no-voltage state; 14 is a 21st signal conversion means to which the signal 2a is input and converts this signal 22nd binary signal 1 based on magnitude
This is a 22nd signal converting means that outputs 4a. In this case, the conversion means 14 is configured to output a signal 14a depending on whether the signal 2a corresponds to P _r >0. 19 is a pedal pressure detection signal 3a and binary signals 11a, 12a, 13a, 14a
is input, and outputs a motorcycle detection signal 19a by a theoretical calculation described later.
20 is a signal processing section consisting of this means 19 and signal converting means 11-14. The signal processing unit 20 is housed in the bath 15 in FIG.

FIG. 4 is a flowchart for explaining the operation of the logic operation means 19. Next, FIG. 4 will be explained. When the vehicle enters the passageway 4, the detection signal 1 is output from the light receiver 18.
8a is output and this signal is input to the calculation means 19. First, in step _S1 , it is determined whether the signal 11a is present, that is, whether the first sensor 1 is being pressed. Then, in step _S2 , it is determined whether the sensor 3 is pressed and the signal 3a is turned on.
If the signal 3a is turned on in step _S2 , such a condition can be detected by a motorcycle or by the left wheel of a car having left and right wheels, which causes both sensors 1, This occurs when both sensors 1 and 3 are pressed together, or when sensors 1 and 3 are pressed separately by the left and right wheels of the vehicle, so in step _S3 it is determined whether the signal 13a is present or not.
That is, it is checked whether the second sensor 2 is being pressed. From now on, a car with wheels on the left and right sides may be simply referred to as a car. It goes without saying that if the signal 13a is present in step _S3 , the passing vehicle can be determined by the car, but even if the signal 13a is not present in this step, in this case, as described above, Therefore, there is a possibility that sensors 1 and 3 are being pressed down separately. However, as described above, the sensors 1, 2, and 3 are arranged so that the same sensor is not pressed by both the left and right wheels of a single vehicle at the same time. Therefore step
In _S4 , it is checked using the signal 12a whether P>0. If P is not positive, this state is considered to be a state in which both sensors are pressed at the boundary between sensors 1 and 3 by the motorcycle, so the logical operation means 19 outputs the motorcycle detection signal 19a.

If signal 3a is turned off in step _S2 , this condition occurs when a motorcycle presses sensor 1 or when a car presses sensor 1 with its left wheel and sensor 2 with its right wheel. do. Therefore, in step _S5 , the presence or absence of pedal pressure on the sensor 2 is determined based on the presence or absence of the signal 13a, and if the signal 13a is not present in this step, the calculation means 19 outputs the motorcycle detection signal 19a.

If it is determined in step _S1 that the sensor 1 is not depressed, then in step _S6 it is determined whether or not the sensor 3 is depressed based on the signal 3a. In this step, the signal 3a is turned on, that is, the state in which sensor 3 is depressed occurs in both motorcycles and automobiles, so in the next step _S7 , a signal is sent to indicate whether or not sensor 2 is depressed. Examine the presence or absence of 13a. If there is no signal 13a, this state is determined to be a state in which the motorcycle presses only the sensor 3, and therefore the signal 19a is output. If the signal 13a is present in step _S7 , this state is
This occurs when both sensors are pressed at the boundary between sensors 3 and 2 by a motorcycle, or when sensors 3 and 2 are pressed separately by the left and right wheels of a car, so step _S8 Then, using the signal 14a, it is determined whether P _r >0. If P _r is not positive, this state is considered to be a state in which both sensors 3 and 2 are pressed by the motorcycle, and thus a signal 19a is output.

If it is determined in step S ₆ that the sensor 3 is not pressed, this state occurs when the motorcycle presses the sensor 2 or when the motorcycle does not actually enter the vehicle passageway 4. This occurs when the vehicle detection signal 18a is input to the calculation means 19. Step _S9 is provided in order to confirm the presence or absence of pedal pressure on the sensor 2 using the signal 13a. When the pedal pressure of the sensor 2 is confirmed in this step, a signal 19a is output.

In FIGS. 1 to 4, each part is constructed as described above. Therefore, according to such a vehicle type discriminating device, it is possible to easily determine whether a vehicle entering the vehicle passageway 4 is a motorcycle based on the detection signal 19a outputted by the logical calculation means 19. .

〔Effect of the invention〕

As described above, in the present invention, the first and second sensors each have a band shape and output the first and second position detection signals corresponding to the position of the pedal pressure when the pedal pressure is applied, and the sensor detects the presence or absence of the pedal pressure. a belt-shaped third sensor that outputs a pedal pressure detection signal as a binary signal in accordance with the vehicle passing path; The first sensor, the third sensor, and the second sensor are arranged in a line in this order from the left side in the width direction, and the eleventh and twelfth sensors output a binary signal depending on the presence or absence of each of the position detection signals. a signal conversion means; 21st and 22nd signal conversion means each outputting a binary signal based on each magnitude of the position detection signal; and 11th, 12th, 21st, and
logical operation means for performing a predetermined logical operation using the output signals of each of the 22 signal conversion means and the pedal pressure detection signal;
Since the vehicle type discriminating device is configured in the following manner, the present invention has the advantage that the motorcycle can be automatically discriminated based on the output signal of the logic operation means.

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of one embodiment of the present invention, Fig. 2 is an explanatory diagram of the arrangement of the main parts shown in Fig. 1, and Fig. 3 is a diagram showing the arrangement of the main parts shown in Fig. 1.
FIG. 4 is a flowchart for explaining the operation of the logic operation means in FIG. 1. FIG. 1...First sensor, 1a...First position detection signal, 2...Second sensor, 2a...Second position detection signal, 3...Third sensor, 3a...Tread pressure detection signal,
4...Vehicle passing path, 4a...Road surface, 11...11th
Signal conversion means, 11a... 11th binary signal, 12...
... 12th signal conversion means, 12a ... 12th binary signal,
13...21st signal conversion means, 13a...21st binary signal, 14...22nd signal conversion means, 14a...2nd signal conversion means
22 binary signal, 19...logic operation means, 19a...
Motorcycle detection signal.

Claims (1)

[Claims] 1 Installed on the left and right side road surfaces in the width direction of the vehicle passageway so as to be substantially perpendicular to the vehicle passageway and in a line, each of which outputs a first and second position detection signal according to the pedal pressure position, both of which are strip-shaped. installed between the first and second sensors and the first on the road surface at the center in the width direction of the vehicle passageway so as to be in line with the first and second sensors; a third belt-shaped sensor that outputs a pedal pressure detection signal; and eleventh and twenty-first signal conversion means that output eleventh and twenty-first binary signals depending on the presence or absence of the first and second position detection signals, respectively; 12th and 22nd signal conversion means for outputting 12th and 22nd binary signals based on respective magnitudes of the first and second position detection signals;
12, 21st, and 22nd binary signals and the pedal pressure detection signal are inputted to the logic operation means for performing a predetermined logical operation, and the motorcycle is discriminated based on the output signal of the logic operation means. A vehicle type identification device featuring: