JPS5843156B2 - Vehicle identification device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Vehicles are identified at the entrance or exit of a toll road, and tolls are collected accordingly.

However, the current situation is that all of this is done manually.

The present invention relates to a vehicle identification device capable of identifying the type of vehicle without relying on human hands.

An embodiment of the present invention will be described below with reference to the drawings.

Figure 1 shows the entrance or exit of a toll road.

1 and 2 are vehicle passages, and 3 and 4 are manager's rooms where tolls for the toll road are collected.

5 (5L52) is a light transmitting section that transmits light toward the light receiving section 6 (61, 62).

The light receiving section 6 (6L62) determines that it is vehicle heat while receiving the light from the light transmitting section 5 (51, 52), and determines that it is vehicle cloth while not receiving light.

81 and 82 are tire sensing sections, and this tire sensing section 8
L82 is disposed in the width direction of the road between the light transmitting section 5 (51, 52) and the light receiving section 6 (6L62), and a plurality of sensors are arranged in two rows.

7 is a discriminator, and this discriminator 7 is installed in the manager's room 3, and it discriminates the vehicle type from the light receiving unit 6 (6L62) and the tire sensor 81°820 signal and displays it to the manager. It is something.

2 to 5 show the structure of the tire sensing sections 81 and 82.

FIG. 2 shows a drain in which a tire sensor 81,82 is provided.

In FIG. 2, reference numerals 11 and 12 are L angles fixed to the road, and 13 and 14 are holes formed in the lid 10, into which support rods are inserted.

FIG. 3 shows the relationship between the lid 10 and the tire sensor 15.
It has holes 16 and 17 corresponding to holes 13 and 14, and these holes 13° 14.1
6 and 17, and the tire sensor 15 is connected to the lid 10.
is fixed in the hole 100 of.

In this case, if the tire sensor 1 is installed, the steel plate 18 as shown in FIG.
A urethane rubber 19 is fixed to the base, and a reed relay 20, 21 is fixed thereto with an epoxy resin 22, and the natural rubber 2, which is the part on which the vehicle rides, is fixed.
A magnet 24 is fixed to a part of 3.

Therefore, as the magnet 24 moves up and down, the reed relays 20 and 21 operate.

FIG. 5 shows another example of the tire detector 15, in which piezoelectric elements 27 and 2B are used as detection elements in place of the magnet 24 and reed relays 20 and 210 in FIG.

The impedance of the piezoelectric elements 27, 28 changes depending on the pressure.

This impedance change is detected by an impedance converter 29 to detect the passage of a vehicle.

The same applies to the case shown in Fig. 4, but the vehicle detection parts are provided at one end side shifted from the center, and the detectable area is expanded by placing them alternately in the holes 100 as shown in Fig. 3. ing.

Figure 6 shows the drain 9 covered with 5 lids 10 (10L102°...
. . 1 ON), the sensor 15 (15L152°~, 15N) is configured as shown in Fig. 4 or 5.
This shows the relationship between the light receiving section 61 and the discriminator 7.

That is, each lid 10 has a plurality of sensors 151 to 15N, each of which is connected to the discriminator 7 to discriminate the information of the vehicle type along with the information of the light receiving section 61.

Next, the operation of this configuration will be briefly explained.

First, when looking at the passage 1, while a vehicle is present between the light transmitting section 51 and the light receiving section 61, it can be determined from the light receiving section 61 that a vehicle is present.

By the way, when a vehicle tire rests on the sensor 15 housed in the hole 100 of the lid 10, the natural rubber 23 is pushed by its weight.

In the case of FIG. 4, the reed relays 20 and 21 operate as the magnet 24 moves up and down.

In the case of the detector shown in Fig. 5, the piezoelectric element 27.2
When pressure is applied to the piezoelectric elements 27 and 8, the impedance of the piezoelectric elements 27 and 28 changes, and the impedance converter 29 detects the change in impedance.

In this case, although tire sizes vary depending on the vehicle, the tire sensors 15 are provided at intervals such that at least one sensor per tire is activated for any vehicle.

Therefore, in the case of a passenger car, the number of wheel axles is two, and the tire sensor 15 is first activated by the front wheels, and then activated again by the rear wheels.

Therefore, while detecting the presence of a vehicle from the light receiving section 61, at least one of the tire sensing sections 81
By detecting the number of times each tire sensor 15 operates, the determiner 7 can detect the number of axles of the vehicle.

Further, the determiner 7 can determine the number of wheels by detecting how many tire sensors 16 are operating while detecting the presence of a vehicle.

As described above, the determiner 7 can determine whether the vehicle is a passenger car or a large vehicle based on the number of axles and wheels of the vehicle, and displays the type of vehicle to the manager.

In this case, by arranging the sensors 15 in two alternating rows as shown in Figure 3, the order in which the sensors 15 operate can be detected, and if one operates successively the other, it is considered normal, and vice versa. If you make it possible to get a signal as an error,
If a vehicle that has been traveling in one direction temporarily retreats for some reason, making it impossible to identify the vehicle will prevent incorrect vehicle identification.

Note that FIG. 7 is a diagram showing a tire sensor 15 used in another embodiment.

The sensor 15 is a pipe 2 installed in the drain 9 as shown in FIG.
A part of the pipe 201 branched from 00 is exposed on the road surface, and when the part of the pipe 201 gets caught by the tires of the vehicle and the air drained from the pipe 200 to the drain port 9 through 201 is blocked, it is detected. It is designed so that it can be detected by the element 202.

As is clear from the above description, according to the present invention, a first sensor detects that a tire is placed on the width direction of a vehicle passageway, and a second sensor detects the presence or absence of a vehicle. Since it is used in combination with the above, the number of wheels, the number of axles, etc. can be detected, and the type of vehicle can be automatically determined.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing the arrangement of a vehicle identification device in one embodiment of the present invention, Fig. 2 is a perspective view of a part of the drain port, and Fig. 3 shows the sensor and the state in which it is attached to the drain cover. Perspective view,
FIG. 4A is a sectional view of the sensor, FIG. 4A is a sectional view of the sensor, FIGS.
FIG. 6 is an electrical system diagram. 1.2...road surface, 51...transmitter, 6
1... Light receiver, 81... Tire sensor, 10... Lid, 15... Sensor, I...
... Judgment department.

Claims (1)

[Scope of Claims] 1. A plurality of first sensors arranged at regular intervals in the width direction of the path on which the vehicle travels and detects the state in which the tires of the vehicle are riding, and a plurality of first sensors that detect the presence of passing vehicles. The number of axles is determined by counting the number of detections of at least one sensor while the sensor and the second sensor are sensing the presence of a vehicle, and A vehicle discriminating device comprising a determination unit that determines the number of wheels by counting the number of first sensors operating while the second sensor detects the presence of a vehicle. 2. The vehicle discrimination device according to claim 1, wherein the plurality of first sensors are arranged in units of several blocks. 3. The vehicle identification device according to claim 1 or 2, wherein the first sensor is arranged within a mesh of a mesh-like lid that covers the drain port. Passage through multiple first sensors forming a 41 block? The vehicle discrimination device according to claim 2, which is arranged in a line in the width direction. 3. The vehicle discrimination device according to claim 2, wherein the first sensors forming 51 blocks are arranged in a plurality of rows. 6. The vehicle identification device according to claim 3, which uses a first sensor provided with a hole through which a support rod is inserted, and a mesh lid. 7 Claim 1 using a first sensor consisting of an elastic material such as rubber that deforms due to tire pressure, a magnet fixed to this elastic material, and a reed relay controlled by the movement of this magnet. The vehicle identification device described in Section 1. 8 A first device consisting of a piezoelectric element operated by tire pressure and an impedance converter connected to this piezoelectric element.
A vehicle discrimination device according to claim 1, which uses a sensor. 9 Claims using a first sensor consisting of an air passage that is blocked when a tire rides on it, and a detector that detects the air blocking situation, which is disposed at the air supply port of this air passage The vehicle discrimination device according to item 1.