JP6853556B2 - Object detection device - Google Patents

Description

The present invention relates to an object detection device, and more particularly to an object detection device that can be freely carried and installed and can easily detect the entry and exit of an object into a predetermined area.

The conventional object detection device will be described with reference to the danger prediction notification system 1 shown in FIG. The danger prediction notification system 1 includes an approach monitoring unit 3 that monitors the approach of a vehicle and a notification unit 25 that is connected to the approach monitoring unit 3 via a wireless communication line. The photoelectric sensor is used to transmit the detected sensor signal as an alarm signal, and when the alarm signal is received, the reporting unit 25 sounds a siren or the like to make a notification. Both the approach monitoring unit 3 and the reporting unit 25 can be easily installed by placing them directly on the ground. If the approach monitoring unit 3 is installed near the rubber cone and the reporting unit 25 is installed near the worker, a third party can be installed. When the vehicle approaches the approach monitoring unit 3 side and enters the detection distance range, a siren sound is emitted from the speaker 31 of the notification unit 25 to promptly notify the operator.

This makes it possible to promptly notify the danger of a vehicle collision to those working on the main line without relying on the five senses of human beings, and prevent the occurrence of serious accidents. (See Patent Document 1 above).

JP-A-2018-071073

The above-mentioned danger prediction reporting system 1 has the following points to be improved. The proximity monitoring unit 3 uses a distance measuring reflection type photoelectric sensor. Therefore, in the danger prediction notification system 1, the detection distance of the object is short. Further, since the reflected light of the projected detection light is detected, it cannot be detected well depending on the size and shape of the object, the time for blocking the detection light, and the like. Therefore, when monitoring the entry and exit of people and objects from a specified relatively large area in a relatively large area, for example, at a highway repair site, prevent workers from leaving the work area unnecessarily. In the case of monitoring, there is a point to be improved that the danger prediction notification system 1 cannot detect it well.

Therefore, an object of the present invention is to provide an object detection device that can be freely carried and installed and can easily detect the entry and exit of an object in a predetermined area.

The means for solving the problems in the present invention and the effects of the invention are shown below.

The object detection device according to the present invention is a freely portable object detection device, which is at least one of a light projecting unit that emits detection light for detecting an object and a light receiving unit that receives the detection light. It has a light projecting portion and / or a housing portion for accommodating the light receiving portion, and a fixing portion for fixing the housing portion to a predetermined object.

As a result, the freely portable object detection device can be easily fixed to the desired object.

The object detection device according to the present invention is characterized in that the fixed portion has a convex portion for inserting the object or a concave portion for inserting the object.

As a result, the freely portable object detection device can be easily fixed to a desired object.

The object detection device according to the present invention is characterized in that the fixed portion is formed on the bottom surface of the housing portion.

As a result, the freely portable object detection device can be easily fixed to the tip of the projecting object.

The object detection device according to the present invention is characterized in that the opening is fitted to the tip of a traffic cone.

As a result, the freely portable object detection device can be easily fixed to the tip of the road cone.

The object detection device according to the present invention further includes an object detection unit that detects an object based on the light reception of the detection light.

As a result, it is possible to easily start the detection of an object simply by installing the object detection device.

The object detection device according to the present invention further includes an alarm unit that notifies the detection of the object to the outside by voice.

Thereby, the detection of the object can be easily notified by using voice.

The object detection device according to the present invention further includes an alarm unit that notifies the detection of the object to the outside by light.

Thereby, the detection of the object can be easily notified by using the visual sense.

It is a figure which shows the state which installed the object detection apparatus 100 which is one Example of the object detection apparatus which concerns on this invention on a load cone C. It is a figure which shows the state which removed the object detection device 100 from a load cone C. It is a perspective view which shows the object detection device 100. It is a figure which shows the housing part 101 of the object detection device 100. It is a figure which shows the hardware composition of the internal circuit part 103. The installation example of the object detection device 100 is shown. The installation example of the object detection device 100 is shown. It is a flowchart which shows the object detection process. It is a flowchart which shows the object detection process. It is a flowchart which shows the object detection process. It is a figure which shows the state which installed the object detection apparatus 200 which is one Example of the object detection apparatus which concerns on this invention on a load cone CC. It is a figure which shows the state which removed the object detection device 200 from a load cone CC. It is a perspective view which shows the object detection device 200. It is a figure which shows the housing part 201 of the object detection device 200. It is a figure which shows the other embodiment of the object detection apparatus. It is a figure which shows the conventional object detection device.

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

The object detection device according to the present invention will be described by taking the object detection device 100, which is an embodiment, as an example. The object detection device 100 is installed at the tip of a road cone C used at a construction site to detect the entry and exit of people and objects into a set area. The road cone C is a security device installed for the purpose of dividing a predetermined area.

Configuration of First Object Detection Device 100 FIG. 1 shows a state in which the object detection device 100 is installed on the load cone C. FIG. 2 shows a state in which the object detection device 100 is removed from the load cone C. As shown in FIG. 2, the object detection device 100 is installed on a traffic cone C having a triangular pyramid-shaped portion at the tip thereof and having an opening CR at the tip. The object detection device 100 is installed in the load cone C in a stable state by fitting the convex fixing portion 101d (described later) into the opening CR of the load cone C.

The configuration of the object detection device 100 will be described with reference to FIG. The object detection device 100 includes a housing unit 101, an internal circuit unit 103, an alarm unit 105, a wireless antenna 107, and a start switch 109.

The housing unit 101 houses the internal circuit 103 inside, and holds the alarm unit 105, the wireless antenna 107, and the start switch 109 to the outside. The housing portion 101 has a rectangular parallelepiped shape having an internal space.

A perspective view of the housing portion 101 from below is shown in FIG. The housing portion 101 has a light emitting opening 101a, a light receiving opening 101b, and a status display opening 101c on one side surface. Further, the housing portion 101 has a fixing portion 101d on the bottom surface.

The light projecting opening 101a is an opening for projecting the detection light projected by the light projecting unit 103c (described later) of the internal circuit unit 103 located inside the housing unit 101 toward the outside. The light receiving opening 101b is an opening for receiving the detection light projected from the other object detection device 100. The state display opening 101c is an opening for indicating the operating state of the object detection device 100.

The fixing portion 101d stably fixes the object detection device 100 to the tip of the load cone C. The fixing portion 101d is formed as a convex portion that fits in the middle of the conical portion of the load cone C.

The object detection device 100 is centered on a type in which a light emitting opening 101a, a state display opening 101c, and a light receiving opening 101b are lined up from top to bottom as shown in FIG. 4, and a state display opening 101c. There is a type in which the positions of the light emitting opening 101a and the light receiving opening 101b are reversed, and the light receiving opening 101b, the status display opening 101c, and the light receiving opening 101a are lined up from top to bottom. The former object detection device 100 and the latter object detection device 100 are used as a pair. As a result, the object can be detected by a plurality of detection lights.

The internal circuit unit 103 is an electronic circuit that controls the light emission and reception of the detection light. The internal circuit unit 103 will be described later.

The alarm unit 105 notifies the detection of an object to the outside by sound. The alarm unit 105 is arranged on the upper surface of the housing unit 101. The alarm unit 105 has a speaker.

The wireless antenna 107 is an antenna for transmitting and receiving data by wireless communication with another object detection device 100. The wireless antenna 107 is arranged on the upper surface of the housing portion 101.

The start switch 109 is a switch for supplying and stopping electric power to the internal circuit unit 103. The start switch 109 is arranged on the upper surface of the housing portion 101.

Next, the internal circuit unit 103 will be described with reference to the hardware configuration shown in FIG. The internal circuit unit 103 includes a CPU 103a, a memory 103b, a light emitting unit 103c, a light receiving unit 103d, an operating state display unit 103e, a wireless communication unit 103f, a setting unit 103g, and a power supply unit 103h.

The CPU 103a performs processing based on other applications such as an operating system (OS) and an object detection program recorded in the memory 103b. The memory 103b provides a work area for the CPU 103a. The memory 103b records and holds the OS, other applications such as an object detection program, and various data.

The light projecting unit 103c projects a predetermined detection light, for example, near infrared rays. The light projecting unit 103c generates near infrared rays by using, for example, a near infrared LED (Light Emitting Diode). The light projecting unit 103c is adjusted by using a predetermined lens or the like so that the detected light is linearly projected along the predetermined light projecting axis J103c.

The light receiving unit 103d receives the detection light projected by the other object detection device 100. The light receiving unit 103d receives the detection light by using, for example, a phototransistor, a photodiode, a light receiving element having a built-in amplifier circuit, or the like. When a photodiode is used, the light receiving unit 103d may include an amplifier circuit and a filter circuit together.

The light projecting unit 103c and the light receiving unit 103d correspond to the so-called transmissive type, and can stably detect an object even over a relatively long distance. In addition, since the detection is less affected by changes in the surrounding environment, stable detection can be performed even when used outdoors.

The operation state display unit 103e displays the operation of the object detection device 100 according to the light reception state of the detection light in the light receiving unit 103d by light. The operation state display unit 103e emits light by the LED. The operation state display unit 103e displays the amount of detected light received by the light receiving unit 103d when the object detection device 100 is in the optical axis adjustment mode. Further, when the object detection device 100 is in the object detection mode, the operation state display unit 103e displays whether or not the object is detected, that is, whether or not the light receiving of the detection light by the light receiving unit 103d is interrupted. The optical axis adjustment mode and the object detection mode will be described later.

The wireless communication unit 103f connects to another object detection device 100 and transmits / receives data. The wireless communication unit 103f realizes wireless communication by using, for example, RF (Radio Frequency) technology. A wireless antenna 107 is connected to the wireless communication unit 103f.

Master / slave information indicating a superiority / inferiority relationship with another paired object detection device 100 is set in the setting unit 103g. The setting unit 103g has a DIP switch (Dual In? Line Package switch). The user sets the master or slave for the object detection device 100 to be used by operating the DIP switch.

The power supply unit 103h supplies a predetermined electric power to each component of the internal circuit unit 103. For example, a dry battery is used for the power supply unit 103h.

2. Use of Object Detection Device 100 (1) Preset Setting The object detection device 100 is set with identification information for identifying itself in advance. Further, in the object detection device 100, the identification information of the paired object detection device 100 is set in advance as the corresponding device information. The identification information and the corresponding device information are stored and held in the memory 103b.

(2) Installation of the Object Detection Device 100 The installation of the object detection device 100 will be described with reference to FIGS. 6 and 7. As shown in FIG. 6, the user using the object detection device 100 arranges two load cones C at predetermined intervals. The interval for arranging the road cone C is, for example, 20 meters.

The user fits the paired object detection devices 100 into the opening CR (see FIG. 2) at the tip of the installed load cone C and the fixed portion 101d (see FIG. 4) of the housing portion 101. The object detection device 100 is installed on the load cone C. The user adjusts the position while rotating the housing portion 101 so that the respective opening forming side surfaces P101 of the installed object detection device 100 face each other.

If the position can be adjusted to some extent, the user operates each start switch 109 (see FIG. 3) to operate the object detection device 100. After adjusting the light projection axis J103c of the detection light, the user causes the object detection device 100 to execute the object detection.

As shown in FIG. 7, it is used to prevent the entry of a person or an object into the predetermined area R and / or the exit of the person or the object from the predetermined area R (arrows V1, V2, V3, V4). The person arranges the road cone C along the outer circumference of the region R, and installs the object detection device 100 at the tip of the arranged road cone C. When arranging the object detection device 100, the object detection device 100 is arranged so that the light projection axes J103c of the detection light of the paired object detection device 100 face each other.

(3) Operation after installation The object detection device 100 operates in two modes, an optical axis adjustment mode and an object detection mode. The light emitting axis adjustment mode is matched with the light receiving unit 103d of the object detection device 100 to which the light emitting axis J103c of the detection light projected from the own light emitting unit 103c is paired, and a sufficient amount of light is obtained in the light receiving unit 103d. Mode up to. In the optical axis adjustment mode, it is not determined that the object has been detected even if the light receiving unit 103d does not receive the detection light. Since the object detection device 100 can be freely carried and installed at a desired position, when the object detection device 100 is operated, the detection light can be projected and received from the other object detection device 100 that is paired with the object detection device 100. The light projection axis J103c is not adjusted. Therefore, until the light projecting axis J103c of the detection light is aligned, the light receiving unit 103d of the object detection device 100 does not receive the detection light from the paired object detection device 100, so that the object is detected. An operation associated with object detection, for example, an alarm is generated. In order to prevent such an unexpected operation at the stage of operation, the optical axis adjustment mode is set.

In the detection mode, after the setting of the light projecting axis J103c of the object detection device 100 is completed and a predetermined detection light can be received, normal object detection is executed using the light projecting unit 103c and the light receiving unit 103d. Mode to do.

The operation of the object detection device 100 will be described with reference to the flowcharts shown in FIGS. 8 to 10. In FIGS. 8 to 10, the same processing is designated by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 8, the CPU 103a of the object detection device 100 operates in the optical axis adjustment mode when the power is turned on (S501). The CPU 103a acquires master / slave setting information from the setting unit 103g (503), and determines whether it is a master or a slave (S505).

In the following, the CPU 103a of the master object detection device 100 will be referred to as the CPU 103aM, and the CPU of the slave object detection device 100 will be referred to as the CPU 103aS. In step S505, the CPU 103aM, which determines that the value of the master / slave setting information is the master, transmits the optical axis adjustment mode start information to the paired object detection device 100 via the wireless communication unit 103f. (S507). When transmitting the setting mode start information, the CPU 103aM also transmits the identification information set in the memory 103b.

On the other hand, when the CPU 103aS, which determines in step S505 that the value of the master / slave setting information is the slave, receives the optical axis adjustment mode start information transmitted by the master object detection device 100, as shown in FIG. (S801), the optical axis adjustment mode start completion information is transmitted to the master object detection device 100 (S803).

Returning to FIG. 8, when the CPU 103aM receives the light projection axis adjustment mode start completion information from the paired object detection device 100, that is, the slave object detection device 100 (S509), the light receiving unit 103d is placed in the light receiving standby state. (S511). Further, the CPU 103aM starts projecting the detection light from the light projecting unit 103c (S513).

On the other hand, as shown in FIG. 9, the CPU 103aS puts the light receiving unit 103d into the light receiving standby state after transmitting the light emitting axis adjustment mode start completion information in step S803 (S511). Further, the CPU 103aS starts projecting the detection light from the light projecting unit 103c (S513).

In this state, the user projects the detection light projected by each of the light projecting units 103c while rotating the master object detection device 100, the slave object detection device 100, and the respective housing portions 101. The axis J103c is adjusted so as to face the direction of the paired object detection device 100.

When the CPU 103aM receives the detection light in the light receiving unit 103d (S515), the CPU 103aM operates the operation state display unit 103e according to the amount of the detected light received (S517). For example, if the light receiving amount is less than half of the preset detection light amount, the operating state display unit 103e is not turned on, and if it is more than half and less than the preset light receiving amount, the operating state display unit 103e is turned on. The light is blinked, and if the amount of light received is equal to or greater than the preset amount of light received, the operation status display unit 103e is continuously lit.

When the light receiving unit 103d receives the detection light equal to or larger than the preset light receiving amount (S519), the CPU 103aM determines whether to receive the detected light receiving information from the slave object detection device 100 (S521). When the CPU 103aM determines that the detection light reception information has been received, it transmits the object detection mode transition information to the slave object detection device 100 (S525). In addition, it also shifts to the object detection mode.

On the other hand, when the CPU 103aM determines in step S521 that it has received the detection light of a predetermined amount or more, and then determines that the detection light reception information has not been received and the predetermined time has elapsed (S523), the slave object. It is determined that the light projection axis adjustment in the detection device 100 has not been completed, and the processes after step S515 are repeated.

On the other hand, as shown in FIG. 9, the CPU 103aS of the slave object detection device 100 operates the operation state display unit 103e according to the amount of the detected light received when the light receiving unit 103d receives the detection light (S515). S517). The operation of the operation state display unit 103e is the same as that of the master object detection device 100.

When the CPU 103aS receives the detection light equal to or larger than the preset amount of light received by the light receiving unit 103d (S519) and determines that a predetermined time has elapsed in that state (S805), the CPU 103aS determines that the predetermined time has elapsed (S805). The detection light reception information indicating that the projection axis adjustment is completed is transmitted (S807). When the CPU 103aS receives the object detection mode transition information from the master object detection device 100 (S809), the CPU 103aS shifts to the object detection mode.

The CPU 103aM of the master object detection device 100 and the CPU 103aS of the slave object detection device 100 (hereinafter, both are referred to as CPU103a without distinction) that have shifted to the object detection mode are based on the time of transmission / reception of the object detection mode transition information. Subsequent projection and reception of detection light is executed. That is, the object detection device 100 is synchronized with respect to the light emission and reception of the detection light with reference to the time of transmission / reception of the object detection mode transition information. As shown in FIG. 10, the CPU 103a projects the detection light via the light projecting unit 103c at predetermined time intervals (S901). Further, the CPU 103a receives the detection light via the light receiving unit 103d in accordance with the projection of the detection light from the paired object detection device 100 (S903).

When the CPU 103a determines in step S903 that the light receiving unit 103d has not received the detected light, the CPU 103a generates an alarm via the alarm unit 105 (S905), and some object such as a person or an object crosses the optical axis J103c. Communicate that. The CPU 103a does not receive the command to stop the alarm (S907), and generates the alarm until the predetermined time elapses (S909). On the other hand, the CPU 103a does not acquire the command to stop the alarm in step S907, or does not acquire the command to stop the alarm in step S909, and stops the alarm when a predetermined time elapses (S911). The command to stop the alarm is generated by operating the start switch 109 at the stage when the alarm is generated.

The CPU 103a repeats the object detection processing of steps S901 to S911 until the start switch 109 is pressed and the operation is completed (S913).

The object detection device 100 of the first embodiment described above was installed on a road cone C having a conical portion at the tip thereof and having an opening CR at the tip. On the other hand, the object detection device 200 according to the present embodiment is installed on a road cone CC having a conical portion CCR at the tip. In the following, the same configurations as in the first embodiment will be designated by the same reference numerals as those in the first embodiment, and detailed description thereof will be omitted.

Configuration of First Object Detection Device 200 FIG. 11 shows a state in which the object detection device 200 is installed on the load cone CC. FIG. 12 shows a state in which the object detection device 200 is removed from the load cone CC. As shown in FIG. 12, the object detection device 100 is installed on a traffic cone CC having a conical portion CCR at its tip. The object detection device 200 is installed in the load cone CC in a stable state by fitting the concave fixing portion 201d (described later) to the conical portion CCR at the tip of the load cone CC.

The configuration of the object detection device 200 will be described with reference to FIG. The object detection device 100 includes a housing unit 201, an internal circuit unit 103, an alarm unit 105, a wireless antenna 107, and a start switch 109.

The housing unit 201 houses the internal circuit 103 inside, and holds the alarm unit 105, the wireless antenna 107, and the start switch 109 to the outside. The housing portion 101 has a rectangular parallelepiped shape having an internal space.

A perspective view of the housing portion 201 from below is shown in FIG. The housing portion 201 has a light emitting opening 101a, a light receiving opening 101b, and a status display opening 101c on one side surface. Further, the housing portion 201 has a fixing portion 201d on the bottom surface.

The fixing portion 201d stably fixes the object detection device 200 to the conical portion CCR at the tip of the load cone CC. The fixing portion 201d is formed as a concave portion that fits into the conical portion CCR of the load cone CC.

[Other Embodiments]
(1) Fixing portion 101d: In the above-described first embodiment, the fixing portion 101d is a convex portion formed on the bottom surface of the housing portion 101, but if it can be fixed to the load cone C, it is exemplified. Not limited to things. For example, like the housing portion 301 of the object detection device 300 shown in FIG. 15A, it has a cylindrical shape arranged on a surface facing the side surface on which the light projection opening 101a or the like is formed, and fits into the opening CR. It may be formed as a fixed portion 301d having a matching convex shape.

Further, in the above-described second embodiment, the fixing portion 201d is a concave portion formed on the bottom surface of the housing portion 201, but the fixing portion 201d is not limited to the exemplary one as long as it can be fixed to the load cone CC. For example, like the housing portion 401 of the object detection device 400 shown in FIG. 15B, the conical portion CCR has a ring shape arranged on a surface facing the side surface on which the light projection opening 101a or the like is formed. May be formed as a fixed portion 401d having a concave shape to be fitted with.

(2) Installation location of the object detection device: In the above-described first embodiment, the object detection device 100 is installed on the load cone C, but the object detection device 100 is not limited to the example. For example, it may be installed at the tip of a predetermined rod-shaped body.

When the object detection device 100 is installed on a rod-shaped body other than the load cone, the shape of the fixing portion 101d may be changed according to the shape of the tip of the rod-shaped body. For example, in the case of a rod-shaped body having three concave portions at the tip, the three convex portions formed on the bottom surface of the housing 101 may be used as the fixing portion. Further, the shape of the fixed portion may be a convex portion such as a rectangular shape or a triangular shape that matches the shape of the concave portion of the rod-shaped body. The same applies to the fixed portion 201d of the object detection device 200 of the second embodiment.

(3) Judgment of object detection: In the above-described first embodiment, if an object is detected by any of the object detection devices 100 between the master and slave and the two object detection devices 100, each of them generates an alarm. However, when both object detection devices 100 detect an object, an alarm may be generated. In this case, the object detection device 100 that has detected the object transmits information indicating that the object has been detected to the other object detection device 100.

(4) Positions of the light emitting unit 103c and the light receiving unit 103d: In the above-described first embodiment, the positions of the light emitting unit 103c and the light receiving unit 103d are different between the master object detection device 100 and the slave object detection device 100. Although they are said to be interchanged, both may be formed at the same position. In this case, for example, the detection light is projected at a wide angle to some extent, or the light projection axis J103c of the detection light is shifted from the horizontal to the light receiving portion 103d side of the paired object detection device 100. ..

(5) Visualization of detection status: In the above-described first embodiment, the operation status display unit 103e shows the adjusted state of the optical axis J103c by blinking, continuously lighting, and turning off, but the adjustment of the optical axis J103c As long as it can indicate the state, it is not limited to the example. For example, the adjustment state of the optical axis J103c may be indicated by the change in color development.

(6) Generation of alarm: In the above-mentioned first embodiment, when an object is detected, an alarm is issued, but the example is not limited to the example as long as it can notify the object detection. For example, the operation status display unit 103e may be turned on and blinked. Further, the alarm unit 105 may not be arranged, and the detection of the object may be notified only by the light emitted by the operation state display unit 103e or the like.

(7) Arrangement Positions of CPU 103a and Memory 103b: In the above-described first embodiment, the CPU 103a and the memory 103b are arranged in the internal circuit unit 103, but they are arranged as a control device different from the object detection device 100. You may do so. In this case, the object detection device 100 may transmit and receive data such as object detection information via the wireless communication unit 103f, for example.

(8) Use in pairs: In the above-described first embodiment, it is assumed that an object is detected by using two object detection devices 100, which are a master and a slave, but can be installed on a road cone C or the like to detect an object. As long as it can be done, it is not limited to the example. For example, in one object detection device 100, if the light receiving unit 103d receives the reflected light of the detection light projected by the light projecting unit 103c to detect the object, the one object detection device 100 can detect the object. Can detect objects.

Further, in order to facilitate the detection of an object, instead of the slave object detection device 100 in the first embodiment, a reflecting member is used for the light receiving unit 103d to transmit the detection light projected by the light emitting unit 103c such as a predetermined reflector. You may arrange it. Further, in this case, the light projecting axis adjustment that adjusts the light projecting axis J103c reflected by the reflecting member according to the amount of light received by the light receiving unit 103d may be executed as in the first embodiment.

(9) Shape of the housing portion 101: In the above-described first embodiment, the housing portion 101 has a rectangular parallelepiped shape, but the shape is not limited to the example as long as it can include the internal circuit portion 103. For example, it may be a cylindrical body or a polygonal prism shape.

(10) Arrangement of wireless antenna 107 and start switch 109: In the first embodiment described above, the wireless antenna 107 is arranged on the upper surface of the housing portion 101 as long as it can execute a predetermined wireless communication. , Not limited to the examples. For example, it may be arranged at a place other than the upper surface of the housing portion 101, or may be arranged as a part of the internal circuit portion 103 as a chip antenna.

The start switch 109 may also be arranged at a location other than the upper surface of the housing portion 101.

(11) Setting of master / slave information: In the above-described first embodiment, the master / slave information is set by the DIP switch of the setting unit 103f, but if the master / slave information can be set, it is an example. Not limited to. For example, a rotary switch may be used instead of the DIP switch. Further, before use, the master / slave information setting mode may be set by pressing and holding the start switch 109 or the like, and the master / slave information may be stored in the memory 103b by using a predetermined device or the like.

(12) Optical axis adjustment mode: In the first embodiment described above, when the optical axis of the light projecting unit 103c is adjusted, the mode shifts to the object detection mode, but even if the light projecting axis is not adjusted, it is predetermined. After a lapse of time, the mode may be automatically shifted to the object detection mode.

(13) Use of object detection device: In the above-mentioned first embodiment, the use of the object detection device 100 is applied to a road cone C installed at a repair site or the like of an expressway if it is necessary to distinguish a predetermined area. Not limited. For example, it may be a construction site, a robot, a factory, or a distribution relay station. The type of the object to be detected is not limited as long as it invades the predetermined area and exits from the predetermined area, such as a worker, a passerby, a work vehicle, and a general passing vehicle.

(14) Configuration of Internal Circuit Unit 103: In the above-described first embodiment, the object detection program is executed by using the CPU 103a, but the object detection program is not limited to the example as long as it is executed. For example, an object detection program may be executed by a logic circuit.

(15) Process executed by the internal circuit unit 103: In the above-described first embodiment, the flowcharts of FIGS. 8 to 10 are shown as the process of realizing the object detection program, but the light projection axis J103c of the detection light is used. As long as it can be adjusted and an object can be detected, the flow chart is not limited to the example.

The object detection device according to the present invention can be used, for example, for detecting the entry or exit of a person or object into a repair site on an expressway.

100 Object detection device 101 Housing part 101a Floodlight opening 101b Light receiving opening 101c Status display opening P101 Opening forming side surface 101d Fixed part 103 Internal circuit part 103a CPU
103b Memory 103c Luminous unit J103c Optical axis 103d Light receiving unit 103e Operating status display unit 103f Wireless communication unit 103g Setting unit 103h Power supply unit 105 Alarm unit 107 Wireless antenna 109 Start switch 200 Object detection device 201 Housing unit 201d Fixed unit 300 Object Detection device 301 Housing part 301d Fixed part 400 Object detection device 401 Housing part 401d Fixed part C Road cone CR Opening CC Road cone CCR Conical shape part

Claims (3)

It is an object detection device that can be carried freely.
At least one of a light projecting unit that emits detection light for detecting an object and a light receiving unit that receives the detection light.
The light emitting unit and / or the power supply unit that operates the light receiving unit,
The light projecting unit and / or the housing unit accommodating the light receiving unit,
A fixing part that fixes the housing part to the road cone,
An alarm unit that notifies the detection of the object to the outside by voice and / or notifies the detection of the object to the outside by light.
It is an object detection device that has
The fixed part is
It is formed on the bottom surface of the housing and
Having a protrusion that can be inserted into the opening at the tip of the road cone,
An object detection device characterized by. In the object detection device according to claim 1, further
A wireless communication unit that wirelessly communicates with the other object detection device,
Object detection device with. In the object detection device according to claim 1 or 2, further
An object detection unit that detects an object based on the light received by the detection light.
Object detection device with.

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