JP2016192145A - Vehicle jump-in warning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle diving warning device which is easy to install and can accurately detect a vehicle traveling in a lane provided with a work area and warn an operator. To do. SOLUTION: A pulse radar type Doppler radar 10 having a planar array antenna 18 and capable of detecting the speed of a vehicle 4 at a position separated by a preset distance L from the planar array antenna 18 and the Doppler radar 10 are planar. The monitoring unit 12a that outputs a warning signal when the speed of the vehicle 4 detected at a position separated from the array antenna 18 by a set distance L is equal to or higher than the preset set speed, and the warning signal output from the monitoring unit 12a A vehicle dive warning device 1 comprising a warning generating unit 20 that issues a warning when input. [Selection diagram] Fig. 1

Description

  The present invention relates to a road in which a plurality of lanes are provided on one side of a central line, and a vehicle jumped to protect a worker from jumping into a work area such as a construction site installed on the one lane. It relates to warning devices.

  When construction work is performed on a road on which a vehicle such as an automobile travels, a conical pylon or the like is generally arranged around the work place and divided into areas where entry of the vehicle is prohibited. It is.

  However, in a road having a plurality of lanes such as a two-lane road on one side, when construction is being performed in one of the lanes, a vehicle traveling in the construction lane may accidentally jump into the work area.

  In order to protect the operator from such a dive of the vehicle into the work area, a switch for detecting the passage of the vehicle is arranged upstream of the work area, and the vehicle traveling in the lane in which the work area is installed is connected to this switch. When a vehicle is stepped on, a warning is issued from a siren or the like placed in the work area to warn the worker that he / she has jumped into the vehicle and to evacuate outside the work area. Has been developed (see, for example, Patent Document 1).

JP 2002-63667 A

  However, in the warning device as shown in Patent Document 1, it is necessary to secure a time from when the switch detects the vehicle and the warning is issued until the worker retreats outside the work area. The installation work is complicated, for example, it is necessary to install it in a remote location on the upstream side, and it is necessary to have official procedures such as road occupation permission at the place where the switch is installed. was there.

  On the other hand, a method of detecting the speed of a vehicle approaching a work area using a Doppler radar is conceivable, but a conventional Doppler radar has a horn-type antenna and has a wide detection range. If it is used on a road having a road, the speed of the vehicle in all the lanes will be detected. Moreover, the conventional Doppler radar cannot set the position for detecting the speed of the vehicle. For this reason, it has been difficult to accurately detect the vehicle jumping into the work area using a conventional Doppler radar.

  An object of the present invention is to solve such a problem, and the object thereof is to the work area of a vehicle that is easy to install and travels in a lane provided with a work area. An object of the present invention is to provide a vehicle jumping-in warning device capable of accurately detecting the jumping in and warning the worker.

  A vehicle jump-in warning device according to the present invention includes a planar array antenna, a pulse radar type Doppler radar capable of detecting the speed of the vehicle at a position set in advance from the planar array antenna by a preset distance, and the Doppler radar. A monitoring unit that outputs a warning signal when the speed of the vehicle detected at a position away from the planar array antenna by a set distance is equal to or higher than a preset set speed, and a warning signal output from the monitoring unit And a warning generation unit that issues a warning when input.

  In the above configuration, the vehicle jumping-in warning device according to the present invention preferably includes a set distance changing unit that changes the set distance and a set speed changing unit that changes the set speed.

  In the vehicle jumping warning device according to the present invention, in the above configuration, the warning generating unit is preferably a wristwatch type terminal that generates vibration when a warning signal output from the monitoring unit is input.

  The vehicle jump-in warning device according to the present invention preferably includes a wireless transmitter that wirelessly transmits the warning signal output from the monitoring unit to the warning generation unit.

  According to the present invention, since the Doppler radar is provided with a planar array antenna and uses a configuration capable of detecting the vehicle speed at a position away from the planar array antenna by a pulse radar method masking. Even when a work area such as a construction site is installed on a single lane of a road with multiple lanes on one side of the line, it is located at the approximate center in the width direction of the lane of the work area. By arranging the Doppler radar so that the planar array antenna is perpendicular to the lane extending direction, the work area is provided without detecting the speed of the vehicle on the other lane by the Doppler radar. Accurately detects and detects only the speed at a set distance from the work area of the vehicle traveling on the lane A warning to the warning generation unit when the speed of the vehicle is set speed than can be generated with.

  Therefore, it is possible to provide a vehicle jumping-in warning device that is easy to install and that can accurately detect the jumping of a vehicle traveling in a lane provided with a work area into the work area and warn the worker. be able to.

It is explanatory drawing which shows roughly an example of installation of the vehicle jump-in warning apparatus which is one embodiment of this invention. FIG. 2 is a block diagram of the vehicle jump-in warning device shown in FIG. 1. It is a front view of the Doppler radar main body shown in FIG. It is explanatory drawing which shows the detail of the setting board | substrate shown in FIG. It is explanatory drawing which shows roughly the case where the vehicle jumping warning apparatus shown in FIG. 1 is installed in the work area provided immediately after the curve part of the road.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  The vehicle jumping-in warning device of the present invention is a road having a plurality of lanes on one side of the central line, and the worker is prevented from jumping into a work area such as a construction site installed on one of the lanes. It is for protection.

  FIG. 1 shows a construction of a vehicle jumping warning device 1 according to an embodiment of the present invention performed on one lane 2a of a two-lane general road 2 (hereinafter referred to as road 2). The case where it installs in the work area 3 is shown. In this case, the vehicle jump-in warning device 1 monitors the speed of the vehicle 4 traveling on the lane 2a toward the work area 3 at a position away from the work area 3 by a predetermined distance, and at the position, a speed equal to or higher than the set speed. When the vehicle 4 approaching the work area 3 is detected, a warning is issued to the worker 5 working in the work area 3 and the worker 5 operates to urge the worker 5 to move out of the work area 3. Thereby, even if the vehicle 4 jumps into the work area 3, the worker 5 can be protected from jumping into the vehicle 4.

  In FIG. 1, the lane 2 a is a lane on the roadside belt 6 side of the road 2, and the lane 2 b is a lane on the center line 7 side of the road 2. The work area 3 is partitioned by a plurality of pylons 8 arranged on the lane 2a of the road 2 so as to surround the construction site. Instead of the pylon 8, the work area 3 can also be partitioned by other members such as a fence.

  The vehicle jump-in warning device 1 includes a Doppler radar 10 and a warning generation unit 20.

  As shown in FIG. 2, the Doppler radar 10 includes a rectangular case 11 having a radar control unit 12, a radio transmitter 13, a radar operation board 14, a switching power supply 15, and a USB converter 17 for communication with an external device 16. In addition to being accommodated, as shown in FIG. 3, the planar array antenna 18 is attached to the outside of the case 11 to form a single unit.

  The planar array antenna 18 has a flat antenna surface 18a, and includes a large number of antenna elements (radiating elements) arranged in a lattice pattern.

  The Doppler radar 10 is a pulse radar system, and power is supplied from the radar control unit 12 to each antenna element of the planar array antenna 18 under a constant excitation condition, so that the planar array antenna 18 is perpendicular to the antenna surface 18a. A pulse wave with high directivity can be transmitted. Further, the Doppler radar 10 can receive the reflected wave of the transmitted pulse wave with the planar array antenna 18.

  The Doppler radar 10 can emit a pulse wave of 24 GHz, but the frequency is not particularly limited, for example, a pulse wave of 19 GHz is emitted.

  The switching power supply 15 is connected to a power connector 15a of AC100V. By connecting the power supply connector 15a to a commercial power supply, the radar control unit 12, the radio transmitter 13, and the radar operation board 14 are connected via the switching power supply 15. Electric power is supplied.

  When the Doppler radar 10 is shipped from the factory, an external device 16 such as a personal computer is connected to the USB converter 17, and initial settings of various functions of the Doppler radar 10 are performed.

  The Doppler radar 10 is attached to, for example, a tripod 30 or the like, and is disposed at approximately the center in the width direction of the lane 2a in the work area 3 as shown in FIG. At this time, the Doppler radar 10 is directed to the upstream side (right side in FIG. 1) of the lane 2a so that the antenna surface 18a of the planar array antenna 18 is perpendicular to the extending direction of the lane 2a. The antenna 18 is arranged in a posture with a height of about 1 m from the road surface.

  The Doppler radar 10 arranged on the lane 2a as described above can detect the speed of the vehicle 4 at a position away from the planar array antenna 18 by a preset set distance L by pulse radar type masking. . At this time, since the planar array antenna 18 emits a highly directional pulse wave in a direction along the extending direction of the lane 2a, the Doppler radar 10 travels in another lane 2b in which the work area 3 is not provided. Only the speed of the vehicle 19 traveling on the lane 2a where the work area 3 is installed can be detected without erroneously detecting the speed of the vehicle 19. That is, the pulse wave transmitted from the Doppler radar 10 has directivity that is within the range of the width of the lane 2a at the set distance L. As described above, the Doppler radar 10 disposed in the work area 3 detects the speed of only the vehicle 4 at the position on the lane 2a where the radar is disposed and away from the planar array antenna 18 by the set distance L. Can do.

  Since the Doppler radar 10 detects the speed of the vehicle 4 using a pulse wave (radio wave), the speed of the vehicle 4 is accurately detected even in a bad weather situation such as raining or snowing. be able to.

  As shown in FIG. 1, the Doppler radar 10 preferably arranges the planar array antenna 18 in a substantially vertical center in the width direction of the lane 2a in the work area 3 with a posture perpendicular to the extending direction of the lane 2a. If it is a place where the speed of only the vehicle 4 traveling on the lane 2a can be detected at a position away from the upper planar array antenna 18 by the set distance L, it is arranged at another place in the work area 3. May be.

  The radar control unit 12 of the Doppler radar 10 has the function of the monitoring unit 12a, and the speed of the vehicle 4 detected by the Doppler radar 10 at a position away from the planar array antenna 18 by a set distance L is set in advance. When the speed is higher than the set speed, a warning signal is output to the wireless transmitter 13.

  When the warning signal output from the radar control unit 12 (monitoring unit 12a) is input, the wireless transmitter 13 transmits the warning signal to the warning generation unit 20 wirelessly.

  The warning generating unit 20 has a reception function of receiving a warning signal transmitted wirelessly from the wireless transmitter 13, and issues a warning to the worker 5 when the warning signal is received. Yes. That is, the warning generation unit 20 issues a warning to the worker 5 when the warning signal output from the radar control unit 12 (monitoring unit 12a) is input.

  Note that the wireless communication of the warning signal between the wireless transmitter 13 and the warning generation unit 20 can be configured using a specific low power wireless station, for example.

  In the present embodiment, the warning generation unit 20 is configured as a wristwatch-type terminal attached to the arm (wrist) of the worker 5. In this case, the warning generation unit 20 includes a vibration generation unit (not shown) such as a vibration motor, and when a warning signal is input, the vibration generation unit operates to generate vibration. That is, the warning generation unit 20 is configured to make the worker 5 recognize the warning by vibration.

  Such a vehicle jump-in warning device 1 has the Doppler radar 10 installed in the work area 3 as described above, and the warning generator 20 is mounted on the arm of the worker 5 working in the work area 3. The operator 5 can be protected against the vehicle 4 jumping into the work area 3.

  That is, when the vehicle 4 traveling in the lane 2a in which the work area 3 is installed reaches a position that is a set distance L away from the work area 3, that is, the planar array antenna 18, the Doppler radar 10 detects the speed of the vehicle 4 at the position. Is done. If the detected speed of the vehicle 4 is equal to or higher than a preset speed, a warning signal is output from the monitoring unit 12a of the radar control unit 12, and the warning generation unit 20 vibrates to issue a warning to the worker 5. It is done.

  Here, the position at which the Doppler radar 10 detects the speed of the vehicle 4, that is, the set distance L, and the speed of the vehicle 4 that becomes the threshold at which the monitoring unit 12 a issues a warning signal, that is, the set speed, are the positions at which the vehicle 4 is at the set distance L. Before reaching the work area 3 and jumping into the work area 3, the worker 5 who has received the warning issued by the warning generation unit 20 is set to a value that can be evacuated to a safe place outside the work area 3. The Therefore, the Doppler radar 10 detects the vehicle 4 that travels at a speed that may jump into the work area 3, and issues a warning from the warning generation unit 20 to the worker 5 based on the detection result. The retreating out of the work area 3 is promoted, and the worker 5 can be protected against the vehicle 4 jumping into the work area 3.

  As described above, in the vehicle jump warning device 1 according to the present invention, the vehicle 4 that may jump into the work area 3 is detected by the Doppler radar 10, and the warning 5 is warned to the worker 5 by the warning generator 20. Therefore, the worker 5 can be protected against the vehicle 4 jumping into the work area 3.

  Further, in the vehicle jump-in warning device 1 of the present invention, the Doppler radar 10 includes the planar array antenna 18 and detects the speed of the vehicle 4 at a position away from the planar array antenna 18 by a set distance L by masking using a pulse radar system. Even if the work area 3 is installed on one lane 2a of the road 2 provided with a plurality of lanes 2a and 2b, the Doppler radar 10 causes the other lane 2b to Without detecting the speed of the vehicle 19, the speed of only the vehicle 4 traveling on the lane 2 a provided with the work area 3 is accurately detected, and a warning is given when the detected speed of the vehicle 4 is equal to or higher than the set speed. A warning can be generated in the generator 20. Therefore, it is possible to accurately detect the jumping into the work area 3 of the vehicle 4 traveling on the lane 2a provided with the work area 3.

  Furthermore, in the vehicle jump-in warning device 1 of the present invention, the Doppler radar 10 may be installed inside the work area 3, and it is not necessary to install the Doppler radar 10 at a position distant upstream of the work area 3. Since it is not necessary to obtain a road occupation permission for installing the Doppler radar 10 outside the work area 3, the installation work is easy.

  The vehicle jump-in warning device 1 operates the radar operation board 14 so that the set distance L at which the Doppler radar 10 detects the speed of the vehicle 4 and the threshold value at which the monitoring unit 12a of the radar control unit 12 issues a warning. The speed, that is, the set speed can be changed.

  As shown in FIG. 4, the radar operation board 14 includes a distance setting switch 40 as a setting distance changing unit, and the Doppler radar 10 detects the speed of the vehicle 4 by operating the distance setting switch 40. The position, that is, the set distance L can be changed. In the present embodiment, the set distance L can be selectively changed to one of four distances of 7 m, 30 m, 40 m, and 50 m by operating the distance setting switch 40. More specifically, the set distance L selected each time the distance setting switch 40 is pressed can be sequentially changed in the order of 7 m, 30 m, 40 m, and 50 m. Four LED lamps corresponding to each set distance L are arranged on the left side of the distance setting switch 40 on the radar operation board 14, and the LED lamp corresponding to the selected set distance L is turned on, so that the operator Can recognize the selected set distance L.

  As shown in FIG. 4, the radar operation board 14 includes a speed setting switch 41 as a setting speed changing unit. By operating the speed setting switch 41, the monitoring unit 12 a of the radar control unit 12 is operated. The speed of the vehicle 4, that is, the set speed, which becomes a threshold value for issuing a warning can be changed. In the present embodiment, the set speed is selectively changed to one of four speeds of 10 km / h, 50 km / h, 60 km / h, and 70 km / h by operating the speed setting switch 41. Can do. More specifically, the set speed selected every time the speed setting switch 41 is pressed can be sequentially changed in the order of 10 km / h, 50 km / h, 60 km / h, and 70 km / h. The radar operation board 14 is provided with four LED lamps corresponding to each set speed on the left side of the speed setting switch 41. The LED lamp corresponding to the selected set speed is turned on so that the operator can select Set speed can be recognized.

  The operation of the radar operation board 14 can be performed by opening the back cover provided on the opposite side of the case 11 from the planar array antenna 18. However, the distance setting switch 40 and speed setting of the radar operation board 14 can be used. The switch 41 and each LED lamp may be arranged on the surface of the case 11. Further, when the Doppler radar 10 is abnormal, all of the four LED lamps corresponding to the distance setting switch 40 and the four LED lamps corresponding to the speed setting switch 41 may be configured to blink.

  As described above, by setting the setting distance L at which the Doppler radar 10 detects the speed of the vehicle 4 and the setting speed of the vehicle 4 serving as a threshold at which the monitoring unit 12a of the radar control unit 12 issues a warning, This vehicle jump-in warning device 1 can be applied to a work area 3 provided on various roads 2.

  For example, as shown in FIG. 5, when the road 2 on one side two lanes has a curve and the work area 3 is installed on the lane 2a immediately after the curve, the set distance L is set to the curve between the work area 3 and the curve. Is set to a shorter distance corresponding to the short distance between the monitoring unit 12a and the set speed of the vehicle 4 which is a threshold for the monitoring unit 12a to issue a warning, so that the vehicle is jumped in and the warning device 1 is Adapting to the work area 3, it is possible to accurately detect the jumping into the work area 3 of the vehicle 4 traveling in the lane 2a in which the work area 3 is provided.

  On the other hand, on a highway or the like, the work area 3 is set by setting the set distance L to a longer distance and setting the set speed of the vehicle 4 that is a threshold for the monitoring unit 12a to issue a warning. It is possible to accurately detect the jump of the vehicle 4 traveling in the provided lane 2a into the work area 3.

  It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

  For example, in the above-described embodiment, the warning generation unit 20 is a wristwatch-type terminal that is worn on the arm of the worker 5, but is not limited to this, and other shapes of portable devices that can be carried by the worker 5. It may be a stationary device arranged on the terminal or the road 2. In addition, the warning generation unit 20 is not limited to generating vibration as a warning, and may be, for example, a siren, a rotating light, a flashlight, or a combination of these.

  In the above embodiment, a warning signal is transmitted wirelessly from the radar control unit 12 (monitoring unit 12a) to the warning generation unit 20, but the radar control unit 12 (monitoring unit 12a) and the warning generation unit 20 may be connected by wire. In this case, the warning signal output from the radar control unit 12 (monitoring unit 12a) is directly input to the warning generation unit 20 without passing through the radio transmitter 13.

  Further, the Doppler radar 10 may be configured to include a video camera having a recording function. As this camera, such as a so-called drive recorder, a camera that stores a moving image of a predetermined time range before receiving the shock or a moving image of a predetermined time range before and after receiving the shock when receiving an impact of a predetermined acceleration or more. Is preferably used. By configuring the Doppler radar 10 with such a camera, when the vehicle 4 jumps into the work area 3, the state of the vehicle 4 jumping is recorded by the camera to investigate the cause of the jumping, etc. Can be used.

DESCRIPTION OF SYMBOLS 1 Vehicle jump-in warning device 2 General road 2a Lane 2b Lane 3 Work area 4 Vehicle 5 Worker 6 Roadside zone 7 Center line 8 Pylon 10 Doppler radar 11 Case 12 Radar control part 12a Monitoring part 13 Radio transmitter 14 Radar operation board 15 Switching power supply 15a Power supply connector 16 External device 17 USB converter 18 Planar array antenna 18a Antenna surface 19 Vehicle 20 Warning generating unit 30 Tripod 40 Distance setting switch (setting distance changing unit)
41 Speed setting switch (Setting speed changing section)
L Set distance

A vehicle jump-in warning device according to the present invention includes a planar array antenna, a pulse radar type Doppler radar capable of detecting the speed of the vehicle at a position set in advance from the planar array antenna by a preset distance, and the Doppler radar. A monitoring unit that outputs a warning signal when the speed of the vehicle detected at a position away from the planar array antenna by a set distance is equal to or higher than a preset set speed, and a warning signal output from the monitoring unit possess a warning generating unit for issuing a warning to be input, the Doppler pulse wave radar emitted is in the set distance away from the planar array antenna, the width of the lane of the planar array antenna is arranged It is characterized by having directivity within a range .

A vehicle jump-in warning device according to the present invention includes a planar array antenna, a pulse radar type Doppler radar capable of detecting the speed of the vehicle at a position set in advance from the planar array antenna by a preset distance, and the Doppler radar. A monitoring unit that outputs a warning signal when the speed of the vehicle detected at a position away from the planar array antenna by a set distance is equal to or higher than a preset set speed, and a warning signal output from the monitoring unit A warning generation unit that issues a warning when input, and the set distance is set to a distance from the end of a curve of a lane in which the vehicle travels to the planar array antenna, and the planar array antenna oriented is installed so that the antenna surface of the array antenna is perpendicular to the extending direction of the lane, and wherein the Doppler The pulse wave emitted by the radar has directivity that is within a range of the width of the lane in which the planar array antenna is disposed at a position away from the planar array antenna by the set distance. To do.

Claims (4)

A pulsed radar type Doppler radar that includes a planar array antenna and is capable of detecting the speed of the vehicle at a position away from the planar array antenna by a preset set distance;
A monitoring unit that outputs a warning signal when the speed of the vehicle detected by the Doppler radar at a position away from the planar array antenna by a set distance is equal to or higher than a preset set speed;
A vehicle jump-in warning device, comprising: a warning generation unit that issues a warning when a warning signal output from the monitoring unit is input.   The vehicle jump-in warning device according to claim 1, further comprising: a setting distance changing unit that changes the setting distance; and a setting speed changing unit that changes the setting speed.   The vehicle jump-in warning device according to claim 1, wherein the warning generation unit is a wristwatch type terminal that generates vibration when a warning signal output from the monitoring unit is input.   The vehicle jump-in warning device according to any one of claims 1 to 3, further comprising a wireless transmitter that wirelessly transmits a warning signal output from the monitoring unit to the warning generation unit.

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