JP4028874B2 - Speed measuring device detector - Google Patents

Description

The present invention relates to a detector for a speed measuring device , and more particularly to a detector for a speed measuring device that detects a place where the speed measuring device is installed.

Conventionally, various microwave detection devices that detect microwaves emitted from an automatic speed measurement device (hereinafter referred to as “ measurement device ”) installed to measure the traveling speed of a vehicle and output an alarm have been used. Yes. In addition, the frequency of the microwave emitted from the measuring device exists in the same frequency band as the microwave used for the human body detection sensor of the automatic door. For the purpose of prevention, a device that complements the microwave detection device using GPS information is also used.

As an example of a device using GPS as described above, the installed road type (highway or general road) is recorded together with the position information (hereinafter also referred to as “point”) of the measuring device registered in advance, and the road type Is manually set to distinguish it from expressways or ordinary roads, and an alarm is issued when a measuring device installed on each road is detected according to the set road type. A detector of a speed measuring device that is prevented from being emitted is used.

  On the other hand, in Patent Documents 1 and 2, as a microwave detection device capable of alarming operation accompanying the original detection operation while saving power, it is automatically determined whether the road being traveled is a highway or a general road. A microwave detection device that determines and controls the operation of the GPS receiver is described.

JP 2002-107445 A JP 2002-286832 A

In the microwave detection devices described in Patent Documents 1 and 2, the highway and the general road are automatically distinguished, and this distinction is determined based on whether or not the vehicle is continuously running, This is done by a simple method such as determination based on the running speed of the vehicle. In addition, these devices only control the operation of the GPS receiver based on the road type determination result, and do not directly detect a measurement device installed on the road corresponding to the determined road type.

On the other hand, the detector of the speed measuring device described above directly detects the measuring device by manually setting the traveling road type, but the user erroneously selects a road type different from the actual road type on which the vehicle is traveling. If it is set, the necessary warning will not be issued, or conversely, an unnecessary warning will be issued. For example, when driving on a general road when an expressway is set, a warning cannot be issued by detecting a measurement device installed on the general road, but a warning can be issued by detecting a measurement device on the highway. Things will happen.

In addition, manual road type setting is cumbersome, so if all roads are specified for both general roads and expressways, measurement devices installed on road types different from the roads that are actually traveling are also detected. Alarm will be issued.

Therefore, the present invention has been made in view of the problems in the detectors of the conventional speed measuring device described above, and avoids the troublesome manual setting of the road type and the actual driving of the vehicle. An object of the present invention is to provide a detector for a speed measuring device that can automatically determine a road type more accurately and prevent erroneous transmission of an alarm.

To solve the above object, the present invention is mounted on a vehicle, a detector of the speed measuring apparatus for detecting the location of the speed measuring device is installed, the position information of the speed measuring device, wherein the speed measurement with the apparatus is recorded in association with the road types that are installed, and a recording unit for recording the point at which the vehicle can pass when riding highway as fast detection point, the current position and vehicle speed of the vehicle of the vehicle A detection unit for detecting , a road type determination unit for determining a road type on which the vehicle is traveling , between a highway, a general road, and all roads including a highway and a general road, and a warning Based on the warning unit, the road type determined by the road type determination unit, and the current position of the vehicle detected by the detection unit, the vehicle approaches one of the speed measurement devices recorded in the recording unit. If it is determined that And a control unit which causes alerted to, the road type determination unit, when a transition determination of the road species general road from highway, the of the vehicle detected based on the current position of the vehicle The road type determination is changed from an all road to a general road based on the vehicle speed of the vehicle after the road type determination is changed from an expressway to an all road according to a passing state of a high speed detection point. To do.

According to the present invention, the troublesome manual setting of the road type can be avoided, the actual road type on which the vehicle is traveling can be accurately and automatically determined, and an erroneous transmission of an alarm can be prevented. It becomes possible .

In the detector of the speed measurement device, the current position detection unit may be configured to include a GPS.

  Furthermore, the road type determination unit may include an output unit that outputs the determined road type data when the road type on which the vehicle is traveling is determined. The output section can inform the vehicle driver of the determined road type data by voice, and can confirm that the automatic switching operation of the road type determination is appropriately performed.

As described above, according to the present invention, the troublesome manual setting of the road type can be avoided, the actual road type on which the vehicle is traveling can be accurately and automatically determined, and an erroneous transmission of an alarm, etc. It is possible to provide a detector for a speed measuring device that can prevent the above-described problem.

FIG. 1 shows a configuration of an embodiment of a detector (hereinafter referred to as “detector”) of a speed measuring device according to the present invention. The detector 1 is attached to a vehicle and is a measuring device. Used to detect where the is installed.

Detectors 1, the position information of the measuring apparatus, a recording unit 2 for recording with road species measuring device is installed, a current position detection unit 3 for detecting the current position of the vehicle, the vehicle is traveling road A road type determination unit 4 that determines a type, a warning unit 6 that issues a warning, a control unit 5 that controls the entire apparatus, a display unit 7 that displays an alarm, and the road type that the road type determination unit 4 has determined And an output unit 8 for outputting data and the like to the outside.

Recording unit 2, RAM, configured in HDD or the like, the recording unit 2, position information of the motorway and has measurement devices installed in general road is recorded in association with either the expressway or general road .

  The current position detection unit 3 includes a GPS, and calculates the current position of the vehicle based on a GPS signal transmitted from a GPS satellite. Note that GPS is also used to calculate the traveling speed of the vehicle.

  The current position detection unit 3 determines that the type of road on which the vehicle is traveling is an expressway or an ordinary road, or an entire road including an expressway and an ordinary road.

The warning unit 6 issues a warning by voice, light or the like when the vehicle approaches the measuring device . The warning by voice can be performed by a buzzer, a melody, synthetic voice, or the like, and an LED or the like can be used for the warning by light. Further, a warning can be given via the display unit 7.

The control unit 5 is composed of a CPU (Central Processing Unit), a computer program, and the like, and controls the entire detector 1 and also performs various arithmetic processes.

  The display unit 7 includes a display element such as an LCD, and displays the warning from the warning unit 6 as described above, or displays the current position of the vehicle, the traveling speed of the vehicle, road information, and the like.

  The output unit 8 outputs data related to the road type determined by the road type determination unit 4 to the outside.

Next, the operation of the detector 1 having the above configuration will be described with reference to FIGS.

First, the installed road type (highway or general road) is recorded in the recording unit 2 of FIG. 1 together with the position information of the measuring device . In addition, points that can be traveled only when traveling on an expressway or an automobile-only road are registered in advance as high-speed detection points.

  The high-speed detection point basically registers a point where the vehicle has traveled to some extent after entering an IC (interchange), that is, a point where the vehicle is sufficiently accelerated and travels on the main line. In urban highways, points specific to the highway are appropriately registered as necessary outside the IC area. For example, a bridge part of a shoreline where a general road does not exist is registered. In addition, when there is a main general road around the IC, such as in an urban area, basically, no high-speed detection point is registered. Further, when a general road and a highway run in parallel, the high-speed detection point is not registered in the same manner. Therefore, when entering the city expressway in an urban area, it is not easy to quickly switch to the expressway mode, but this can be dealt with by a switching voice flag described later.

  It is not necessary to consider the existence of ordinary roads. For example, in the case of a local road and not a main local road, there is no actual harm even if the IC periphery is registered as a high-speed detection point. This is because it is almost impossible to switch to the highway mode when traveling on a local road in practical use.

Based on the current position of the vehicle detected by the current position detection unit 3, the control unit 5 approaches the measurement device recorded in the recording unit 2 in association with the road type determined by the road type determination unit 4. If it is determined that the warning has been made, a warning is issued from the warning unit 6. Thereby, it is possible to inform the driver of the vehicle where the measuring device is installed.

Next, a method of automatic road type determination by the road type determination unit 4 will be described with reference to FIG. FIG. 2 shows five patterns (A) to (E). The road type determination unit 4 determines the road type on which the vehicle is traveling as one of three types: an expressway or a general road, or an entire road including an expressway and a general road. Depending on the road type determined by the road type determination unit 4, the detector 1 is in one of the expressway mode, the general road mode, and the full road mode.

[Pattern A]
When it is detected that the vehicle has passed the high speed detection point in the all road mode or the general road mode, the mode is switched to the highway mode. It should be noted that urban expressways such as the Metropolitan Expressway are difficult to distinguish from ordinary roads. For example, when entering from the shoreline, the expressway mode is continued or a switching voice described later. Use the switching of silence associated with passing the high-speed detection point.

For cases in which it is not possible to transition to highway mode due to traffic jams or low speed driving through toll gates, such as transition to general road mode by pattern B and pattern C described later, or when entering an expressway in urban areas Depending on the traveling speed of the vehicle, the mode is switched to the all-road mode or the general road mode. In the case of shifting to the all-road mode with the pattern C, there is no problem because the measuring device on the highway is also a warning target.

[Pattern B]
When stopping or slow traveling (for example, traveling at less than 10 km / h) is detected in the all-road mode, the mode is switched to the general road mode.
This is determined to be slow running due to waiting for a signal or the like, or to stop, and once switched to the general road mode.

[Pattern C]
When low-speed traveling (for example, less than 50 km / h) is detected in the highway mode, the mode is switched to the all-road mode.
If low speed traveling is detected in the highway mode, the vehicle is traveling on a general road, or there is a high possibility of entering an intersection or turning left and right, so the highway mode is switched to the all road mode. Alternatively, the general road mode may be temporarily set, and the general road mode may be switched to the full road mode under the pattern B condition. In this way, when getting off a highway from a general road, stop at a toll booth, wait for a signal, or run at a low speed to switch to the general road mode or all road mode, and the measuring device installed on the general road is subject to warning. And

[Pattern D]
When high speed traveling is detected in the general road mode, the mode is switched to the all road mode.
If you enter the highway in the general road mode and continue cruising at 60 km / h, the highway measurement device will not switch to the full road mode but remain in the general road mode. It will not react to. However, assuming that the lower limit of the speed limit on an urban highway is 60 km / h, there is no problem because there is no possibility of being a measurement target .

In general road mode, driving on an ordinary road at a speed of 60 km / h or higher results in an all-road mode, so the usefulness of switching to the ordinary road mode is small, but it is still running at less than 60 km / h. As long as it is possible to improve the frequency of warnings generated by detection of unnecessary highway measuring devices .

[Pattern E]
The highway detection point is not detected for a certain period of time, and the mode is switched to the full road mode.
In order to detect the expressway mode, if the next point cannot be detected even after a predetermined time has passed between points registered in advance, the mode is switched to the all-way mode. If the highway detection points can be arranged at a sufficiently small constant interval, it may be possible to shift to the full road mode or the general road mode on the condition that the detection does not continue for a certain time in the highway mode. In this case, however, the number of points is enormous, and there are problems of the meaning and harmful effect of arranging a large number of points in urban areas, which is actually difficult. That is, when the number of points is increased, there is a high possibility that the vehicle is erroneously switched to the highway mode despite traveling on a general road. On the other hand, if the points are thinned out, the player will get out of the expressway mode.

Next, voice guidance by the detector 1 will be described. When the road type determination unit 4 determines that the road on which the vehicle is traveling is an expressway, the output unit 8 may generate a switching voice “set to highway mode” to provide voice guidance. it can. Thus, when the road type determination unit 3 determines that the road type on which the vehicle is traveling is an expressway, it can be confirmed that the automatic switching operation of the road type determination is appropriately performed.

However, it is necessary to pay attention to the following points when providing the voice guidance.
(1) A flag is set for setting whether or not to allow switching to the expressway mode for each point so that no sound is accidentally generated when traveling on a general road. In this way, if there is no place where there is a need to switch to the general road mode in practice where there is no pre-registered measurement device associated with the general road, a highway detection point is set on the highway. However, the generation of the switching voice can be prohibited. The switching of automatically even urban to (remained silent) motorway mode, therefore, subsequently reacted only to the measuring device of highway, contribute to the unresponsiveness to the measuring apparatus of the general road can do.

(2) Regarding the switching voice of the road type setting, the switching voice between the general road mode and the all road mode is not implemented because the switching factor is not caused by the pre-registered data and is likely to occur frequently depending on the driving conditions. Is safer.

(3) When a new highway is constructed, there is no detection point data, so it is not possible to shift to the highway mode. However, even in this case, it is possible to transition to the fullway mode by detecting the vehicle speed. In addition, since the recording unit 2 of the detector 1 does not include the installation information of the new highway measurement device and it is necessary to newly register the position of the measurement device , there is no practical advantage of switching to the highway mode.

As in the case of the measuring device , by adding parameters such as the traveling direction as the information on the high-speed detection point, it is possible to expect high-speed traveling detection with fewer malfunctions.

In addition, it is possible to detect the measuring device more easily by setting in advance a road type verification point that can pass only on a highway or a general road before the normal warning position of the measuring device point.

It is a block diagram which shows one Embodiment of the detector of the speed measuring device concerning this invention. It is a figure for demonstrating the determination method of the road type in which the vehicle is running in the road type determination part of the detector of the speed measuring device of FIG.

Explanation of symbols

1 Speed detector 2 Recording unit 3 Current position detection unit 4 Road type determination unit 5 Control unit 6 Warning unit 7 Display unit 8 Output unit

Claims (3)

A speed measuring device detector that detects a place where a speed measuring device is installed in a vehicle,
The position information of the speed measuring device, together with the speed measuring device is recorded in association with the road types that are installed, the recording unit to record the point where the vehicle can pass when riding highway as a fast detection point When,
A detection unit for detecting a current position of the vehicle and a vehicle speed of the vehicle ;
A road type determination unit that determines a road type on which the vehicle is traveling , between an expressway, a general road, and all roads including the highway and the general road ;
A warning section that issues a warning;
Based on the road type determined by the road type determination unit and the current position of the vehicle detected by the detection unit, when it is determined that the vehicle is close to one of the speed measurement devices recorded in the recording unit And a control unit for causing the warning unit to issue a warning ,
The road type determination unit is configured to detect the road type according to a passing state of the high speed detection point of the vehicle detected based on a current position of the vehicle when the road type is determined from a highway to a general road. A detector for a speed measuring device , wherein after the type determination is changed from an expressway to an all-way, the road type determination is changed from an all-way to a general road based on the vehicle speed of the vehicle . The speed detector according to claim 1, wherein the detector includes a GPS (Global Positioning System). The speed measurement according to claim 1, wherein the road type determination unit includes an output unit that outputs the determined road type data when the road type on which the vehicle is traveling is determined. Equipment detector.

Images