JPH0464200A - Speed measuring instrument - Google Patents

Abstract

PURPOSE:To safely and precisely stop a vehicle violating traffic regulations by providing a signal control signal generator which outputs a signal control signal to light a signal in the neighborhood of a stopping point interlocking with speed data recorded on a recording part. CONSTITUTION:A wave 5 is transmitted from a transmission/reception part 1 arranged at a measuring point 10 to a travelling vehicle 4, and a reflected wave is received with the transmission/reception part 1 again, and the transmission/reception part 1 detects a Doppler signal 6, and outputs it to a speed measuring part 2. The speed measuring part 2 measures the speed data 8 by converting the Doppler signal 6 to the speed of the travelling vehicle 4, and the speed data 8 is data-transmitted to the recording part 3 via a transmission line 7, and is record-printed on a printer, etc. At the stopping point 11, the signal 14 in the neighborhood of the stopping point 1 is controlled by outputting the signal control signal 13 interlocked with the speed data 8 from the signal control signal generator 12, and stopping light is displayed. Thereby, it is possible to safely stop the vehicle violating the traffic regulations.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a speed measuring device that utilizes, for example, the Doppler effect of radio waves.

For convenience of explanation, a radar speed measuring device that utilizes the Doppler effect of radio waves will be described here.

[Conventional technology]

Conventionally, radar speed measurement devices that utilize this type of radio Doppler effect transmit microwave radio waves to a traveling vehicle from a transmitting/receiving unit installed on the side of the road at the measurement point, receive the reflected waves, and detect the Doppler effect. The top two signals of the difference between the transmitted wave and the received wave are detected.

The Doppler signal is converted into the speed of the traveling vehicle in a speed measurement section, and speed measurement is performed. The measured speed data is transmitted to a recording unit installed at the stopping point.

In addition to recording speed data, in the case of a speed violation, the oncoming vehicle is stopped and prescribed enforcement measures are taken.

FIG. 2 is a configuration diagram showing a conventional radar speed measurement device. In FIG. (5) is a radio wave.

(6) is a Doppler signal, (7) is a transmission line, (8) is speed data, (9) is a road, α· is a measurement point, and αυ is a stopping point.

A conventional radar speed measurement device is configured as described above.
The road (
9) Transmit a radio wave (5) to the traveling vehicle (4) above, receive the reflected wave, and output a Doppler signal (6) that is the difference between the transmitted wave and the received wave due to the Doppler effect. Dogura signal (6)
is input to the speed measuring section (2) and converted into the traveling speed of the traveling vehicle (4). The measured speed data (8) is transmitted via a transmission line (7) to a recording unit (3) installed at a stopping point α force separated by a predetermined distance, and is printed and recorded by a printer or the like. At the stopping point αυ, the speed data (8) is recorded in the recording unit (3), and at the same time, in the case of a speeding vehicle, the enforcement officer sends a stop signal to the vehicle (4), makes it stop, and then takes prescribed enforcement measures. is being carried out.

By the way, the distance from the measuring point α for speed measurement to the stopping point αυ varies depending on the speed data transmission method, but it is about 200 to 300 m in the case of wired transmission and about 200 to 300 m in the case of wireless transmission mainly used on expressways etc. In this case, it is generally 1 to 2-.

[Problem to be solved by the invention]

With conventional radar speed measurement devices such as those mentioned above.

Speed data measured and transmitted at measurement point al (8)
At the stopping point αυ, the enforcement officer will come out on the road and signal the incoming vehicle (4) to stop based on information such as the characteristics of the violating vehicle that is communicated by voice from the measuring point. While doing so, he guided the vehicle and stopped it.

However, there is a problem in that it is always dangerous for an enforcement officer to stop a vehicle that is driving at a high speed by going to Stop Point I on the road and giving a stop signal.

Especially when stopping high-speed vehicles on highways, etc.

It is an extremely dangerous operation as it takes a long distance and time to stop from the stop signal, and on the other hand, for the driver of the illegal vehicle, stopping suddenly is an equally dangerous act and poses a safety problem.

As a result, there are cases where cars with consecutive violations are stopped.

In particular, it is not possible to stop the vehicle accurately, which poses a problem of safety during enforcement work and makes efficient enforcement operations difficult.

This invention was made to solve the above problem, and its object is to be able to safely and accurately stop a violation vehicle at a stopping point.

[Means to solve the problem]

The speed measuring device according to the present invention uses a recording unit to record a violation vehicle that is traveling to a stopping point so that the enforcement officer does not take the risk of stopping the violation vehicle and the driver of the violation vehicle can also stop safely. The system is equipped with a traffic light control signal generator that outputs a traffic light control signal to turn on traffic lights near the stop point in conjunction with the speed data obtained.

[Effect]

In this invention, a traffic light control signal for lighting a traffic light near the stop point is output in conjunction with the speed data recorded by the recording section.

The driver of the violating vehicle can also safely stop the vehicle without the enforcement officer risking the danger of stopping the vehicle at the stopping point.

〔Example〕

FIG. 1 is a block diagram showing an embodiment of the present invention.
11 to 1 are completely the same as the conventional device described above. αri is a traffic light control signal generator that generates a lighting signal for lighting a traffic light in conjunction with the speed data recorded in the recording unit;
a3 is a traffic light control signal from a traffic light control signal generator α-ling, and α-hiro is a traffic light.

In the radar speed measuring device configured as described above, the transmitting/receiving unit (1
1 transmits a radio wave (5) to a traveling vehicle (4), and the reflected wave is received again by the transmitting/receiving section (1). The transmitting/receiving section (1) detects a Doppler signal (6), which is the difference between the transmitted wave and the received wave due to the Doppler effect, and outputs it to the speed measuring section (2).

The speed measurement unit (2) detects the Dotsupura signal (6) from the traveling vehicle (4).
) and measure the speed data (8). The speed data (8) is transmitted to the recording unit (3) installed at the stopping point (111) at predetermined intervals via the transmission line (7), and is recorded and printed out using a printer, etc. At the stopping point αυ, the police A police officer will stop a speeding vehicle while sending a stop signal and take enforcement action.

On the other hand, at the stop point αυ, by outputting the traffic light control signal α= linked to the speed data (8) from the traffic light control signal generator α, the traffic light α4 near the stop point (1) is controlled and the stop light is displayed. Ru.

In other words, against a speeding car driving by.

In addition to the stop signal from the enforcement officer on the road near the stop point α, the stop lighting display from the traffic light α4 is also added, allowing the driver to prepare to stop from just before the stop point αυ.

In the above embodiment, a radar speed measuring device that uses the Doppler effect of radio waves is used as a means for measuring the speed of a traveling vehicle, but the present invention is not limited to this, and may be applied to a device that can measure the speed of a traveling vehicle. That's fine.

〔Effect of the invention〕

As described above, even when a speeding vehicle is stopped at a stopping point for enforcement purposes, the present invention is capable of controlling the traffic light at the stopping point in conjunction with the speed data transmitted from the speed measuring section at the measuring point. Since the traffic light is controlled by the traffic light control signal from the control signal generator and the stop signal is turned on, the driver can start preparing to stop before the stop point.

Therefore, the speeding vehicle can be safely stopped without the need for an enforcement officer to step onto the road at the stopping point and take the risk of sending a stop signal.

As a result, an enforcement officer does not need to take any special stopping action when stopping a speeding vehicle, and the enforcement action can be carried out safely and efficiently.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional radar speed measuring device. In the figure, (1) is a transmitting/receiving section, and (2) is a speed measuring section. (3) is the recording unit, (4) is the running vehicle, (5) is the radio wave, (
6) is a Doppler signal, (7) is a transmission line, (8) is speed data, (9) is a road, α is a measurement point, αυ is a stopping point, α is a traffic light control signal generator, and aken is a traffic light The control signal, α fathom, is a traffic light. Note that the same reference numerals in the two figures indicate the same or similar parts.

Claims (1)

[Claims] In a speed measuring device that has a speed measuring section that measures the traveling speed of a vehicle and a recording section that records the speed data transmitted from this speed measuring section, when the traveling speed of the vehicle exceeds a predetermined speed, A speed measurement device characterized by having a function of generating a control signal for displaying a stop light on a traffic light provided near a set stop point.