JPH02169945A - Antipersonnel tracking device - Google Patents

Abstract

PURPOSE:To follow up the operation direction corresponding to a two-dimensional person movement by judging a location where the person is present on the basis of a different combinations of detection or non-detection by each detection means each having directional detection region, and controlling the operation of driving means on the basis of a result of the judgement. CONSTITUTION:For indexing and storing a distance to a present background object disposed downwardly circumferentially of each ultrasonic sensor 12-14, driving motors 15, 16 are positively or negatively driven alter the direction of a cold air duct 1, whereby the direction Z1-Z3 of each detection region of each ultrasonic sensor 12-14. When a person is present in a seventh region g where the person is detected by all ultrasonic sensors 12-14, the driving of each driving motor is interrupted to direct an air plenum 10 of the cold air duct 1. If there is detected no person by the third ultrasonic sensor 14 for example, a person is present in the second region b where any person is detected by the first and second ultrasonic sensors 12, 13. Therefore, each driving motor is driven to direct the air plenum 10 of the cold air duct 1 toward the person in the second region b, i.e., toward a direction B.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is used, for example, in a spot cooler that performs local cooling, and controls the direction of its action to follow a person. This is related to interpersonal communication devices.

[Prior Art] Conventionally, for example, in spot coolers that perform local cooling, cooling is performed using a cold air duct with a fixed blowing direction,
For example, as disclosed in Japanese Utility Model Publication No. 56-9155, cooling is generally performed using a duct-shaped air blowing device whose blowing direction is periodically changed from side to side.

[Problems to be Solved by the Invention] However, in the conventional spot coolers, the direction of action of the spot cooler for cooling purposes is simply fixed or changed within a predetermined range. . For this reason, if a person being cooled moves around irregularly in various places on one plane, it becomes difficult for the person to be exposed to cold air, resulting in a lack of cooling sensation.

That is, in devices such as spot coolers intended for local action, the direction of action is currently set regardless of the movement of the person.

This invention has been made in view of the above-mentioned circumstances, and its purpose is to provide a person-following device capable of following the action direction of a two-dimensional person's movement on a plane or the like. There is a particular thing.

[Means for Solving the Problem] In order to achieve the above object, the present invention has the following features:
As shown in the figure, three or more detection means M1 each having a directional detection area and each detecting a person within the detection area.
and supporting each detection means M1 so that each detection area is oriented in substantially the same direction and partially overlaps with each other,
Differences in the combination of a movable frame M2 in which each detection means M1 can be integrally moved in two-dimensional directions, a drive means M3 for driving the movable frame M2, and detection or non-detection by each detection means M1. a determining means M4 for determining the position of a person based on the determination means M4; and a driving means M3 for driving the movable frame M2 so that the person at the position determined by the determining means M4 is detected by all the detecting means M1. and a control means M5 for controlling the operation.

[Operation] Therefore, in a state where an object to be detected such as a person is present in each detection area of each detection means M1, the discrimination means M4 detects a person based on the difference in the combination of detection or non-detection by each detection means M1. The control means M5 controls the operation of the drive means M3 based on the determination result. As a result, the movable frame M2 is driven and each detection means M1 is integrally moved in a two-dimensional direction, so that each detection means M1 is detected so that the person at the position determined by the determination means M4 is detected by all the detection means M1. The realm is directed towards people.

[Embodiment] Hereinafter, an embodiment in which the interpersonal tracking device of the present invention is embodied in a ceiling-mounted spot cooler will be described in detail with reference to the drawings.

FIG. 3 shows a flexible cold air duct 1 that forms part of a spot cooler and is installed in a building such as a factory and serves as a movable frame that applies cold air locally from above a human body.

This cold air duct 1 is installed in communication with a main duct 2 for circulating cold air arranged along the ceiling, and one end of the main duct 2 is connected to a cooler body (not shown).

The cold air duct 1 includes a fixed duct 3 fixed to a main duct 2, a movable storage tube 4 provided continuously below the fixed duct 3, and a movable storage tube 4 provided continuously below the movable storage tube 4. The movable duct 5 is constructed by a movable duct 5.

As shown in FIG. 4, in order to bend and drive the cold air duct 1, the movable housing tube 4 incorporates a drive mechanism having a pair of drive motors 15 and 16 as drive means. The inner diameter of the movable accommodating cylinder 4 is set larger than the outer diameter of each duct 3, 5, and a pair of platens 4a corresponding to the outer diameter of the fixed duct 3 are provided above the movable accommodating cylinder 4 to protrude upward. ing.

A support shaft 6 is interposed between the two brackets 4a, and the upper side of the movable housing cylinder 4 is supported rotatably in directions Xa and Xb with respect to the fixed duct 3 via the support shaft 6. . on the other hand,
A pair of brackets 4b corresponding to the outer diameter of the movable duct 5 are provided on the lower side of the movable housing cylinder 4 and project downward. or,
A support shaft 7 is interposed between both brackets 4b, and the support shaft 7
The movable duct 5 is moved in the direction Ya with respect to the movable housing cylinder 4 via
.

It is rotatably supported by Yb. As shown in FIG. 4.5, in this embodiment, the respective support shafts 6.7 are arranged in directions perpendicular to each other, so that
a, Xb and the rotational directions Ya, Yb of the movable duct 5 are orthogonal to each other.

Further, in order to cover the gap between the movable housing cylinder 4 and each duct 3.5, a telescopic bellows 8.9 is provided between the movable housing cylinder 4 and each duct 3.5. each installed.

As shown in FIGS. 3 and 5, the lower end opening of the movable duct 5 serves as the outlet 10 of the cold air duct 1.
Three support arms 11a project radially laterally at equal angular intervals on the outer periphery of the support arm 11a.

11b and llc are provided protrudingly. Each support arm 11a
A first ultrasonic sensor 12, a second ultrasonic sensor 13, and a third ultrasonic sensor 14 as detection means are respectively attached to the tip of the IIC. Each ultrasonic sensor 1
2 to 14 each have a first detection area Z1, a second detection area Z2, and a third detection area Z3, and each of the detection areas 21 to Z3 has a direction in which cold air is blown out from the air outlet 10 in substantially the same way. Each of the ultrasonic sensors 12 to 14 is supported by each of the support arms lla to llc such that the ultrasonic sensors 12 to 14 are oriented so that the detection areas 21 to Z3 partially overlap each other.

Figure 7 shows three detection areas 2 of each ultrasonic sensor 12 to 14.
It shows the overlap of 1 to Z3. Each detection area Z1 to Z3
are the first area a, the second area b, and the third area due to their overlap.
Area C1 4th area d, 5th area a, 6th ? It is divided into eight areas: lI area f, seventh head area g, and eighth area (non-detection area) h.

For example, if a person exists within the first area a, the person will be detected only by the first ultrasonic sensor 12. Moreover, if a person exists within the seventh area g, the person will be detected by all the ultrasonic sensors 12 to 14. Similarly, the first area a to the eighth area? Each ultrasonic sensor 12 to 14 is activated by the presence of a person at any position of lI@h.
They are distinguished by the combination of detection and non-detection.

FIG. 6 shows a drive motor 15 (1
6) etc. is shown.

In this drive mechanism, a mechanism for driving the movable duct 5 and a mechanism for driving the movable housing cylinder 4 are separately provided, and each has a similar configuration. Therefore, the drive mechanism of the movable duct 5 will be mainly explained here.

In this embodiment, a synchronous motor capable of forward and reverse rotation is used as the drive motor 15, so that the motor rotational speed can be kept constant regardless of the magnitude of the load.

Further, the drive motor 15 is equipped with a speed reduction device 1 that decelerates its rotation.
7 is connected, and a drive arm 18 is attached to the output shaft (path shown) of the speed reduction device 17. The drive motor 15 and the speed reducer 17 are fixed to the inner wall of the movable housing cylinder 4 via a bracket 19. Further, the movable duct 5 is drivingly connected to the drive arm 18 via a rotation member 20 and a link member 21 attached to the inner surface thereof. Further, a limit switch 22 for detecting the rotational position of the movable duct 5 is attached to the drive arm 18 (another limit switch 22 is similarly attached to the drive mechanism of the movable housing cylinder 4).
3 is attached). The limit switch 22 is turned on when the central axis of the movable duct 5 and the central axis of the movable housing tube 4 are parallel to each other, and is turned off otherwise.

Therefore, when the drive motor 15 is driven, the rotation reduced by the reduction gear 17 is transmitted to the movable duct 5 via the drive arm 18 and the link member 21, so that the movable duct 5 is rotated around the support shaft 9. and rotated in directions Ya and Yb. Also, during this rotation, limit switch 2
By measuring how long the drive motor 15 is rotated forward or reverse after the drive motor 2 is turned on, it is possible to determine how much the movable duct 5 has been rotated in either direction 'y'a or Yb. Can be done.

On the other hand, in the drive mechanism for the movable housing cylinder 4, the fixed duct 3 is drivingly connected to the drive motor 16 fixed within the movable housing cylinder 4, as described above. Further, another limit switch 23 is also connected to the center axis of the movable housing cylinder 4 and the fixed duct 3.
It turns on when the central axes of the two are parallel to each other, and turns off otherwise.

Therefore, since the movable housing cylinder 4 is supported with respect to the fixed duct 3, the movable housing cylinder 4 is moved in the directions Ya, Yb about the support shaft 6 by driving the drive motor 16.
It is rotated in directions Xa and Xb perpendicular to . In addition, by measuring how long the drive motor 16 rotates forward or reverse after another limit switch 23 is turned on in the same way as described above, it is possible to determine which direction the movable housing @4 is in, Xa or Xb. It is possible to determine how much rotation has occurred.

Then, by driving and controlling the two drive motors 15 and 16 as described above to rotate the movable duct 5 or the movable storage tube 4 in each direction Xa, Xb, Ya, and Yb, the cold air duct 1 can be rotated in any direction. The air outlet 10 is controlled to move in any direction A in FIG.

It is designed to point towards B, C, D, E, and F.

Next, the electrical configuration of the person-following device for the cold air duct 1 configured as described above will be explained with reference to the block diagram of FIG. 2.

Microcomputer as a discrimination means and control means (
First, second, and third ultrasonic sensors 12 to 14 are connected to the ultrasonic transducer (hereinafter referred to as "Mylon") 31 via an ultrasonic transducer drive circuit 32, respectively. Then, the microcomputer 31 drives each of the ultrasonic sensors 12 to 14 at a predetermined timing using the output signal SGI to generate ultrasonic waves.

Further, a multiplexer 33 is connected to the microcomputer 31. Then, the multiplexer 33 sequentially selects the reception signals of each ultrasonic sensor 12 to 14 using the selection signal SG2 output from the output terminal of the microcomputer 31, and outputs the selected reception signal to the bandpass filter 35 via the preamplifier 34. do. In this embodiment, the bandpass filter 35 is set to pass only a signal of 40 kHz, which is the resonant frequency of each ultrasonic sensor 12 to 14.

An amplifier 36 is connected to the bandpass filter 35 to amplify its output signal, and the output signal SG3 of the amplifier 36 is input to one input terminal of a comparator 37. In addition, the other input terminal of the comparator 37 is connected to the first reference voltage ■1.
is entered.

Then, the comparator 37 compares the output signal S'G3 and the first reference voltage 1, and the output signal SG3 is the first reference voltage V
When the value is 1 or more, a high level output signal SG4 is output. That is, when each of the ultrasonic sensors 12 to 14 receives a reflected wave and detects a reflective object within its detection areas 71 to Z3, it outputs a 40 kHz rectangular wave output signal SG4.

An integrating circuit 40 consisting of a capacitor 38 and a resistor 39, one terminal of which is grounded, is connected to the output terminal of the comparator 37. When the output of the comparator 37 is at a high level, charge is accumulated in the capacitor 38 to increase the potential at the output side point α of the integrating circuit 40. Further, when the output of the comparator 37 is low level, the resistor 39
The electric charge in the capacitor 38 is discharged through the integrator circuit 4°, and the potential at the output point α of the integrating circuit 4° is set to a low level (ground level).
Make it.

Furthermore, the output of the integrating circuit 40 (potential at point α) is input to one input terminal of the comparator 41, and the second reference voltage 2 is input to the other input terminal. Then, the comparator 41 compares the potential at point α with the second reference voltage v2, and outputs a high-level detection signal (pulse signal) SG5 when the potential at point α exceeds the second reference voltage ■2. .

That is, when an ultrasonic reflecting object exists in each detection area Z1 to Z3 and one of the ultrasonic sensors 12 to 14 receives the reflected wave, the comparator 41 detects the In response to the reception of the reflected waves, high-level detection (No. 3 SG5) is sequentially output. Therefore, the microcomputer 31 detects the position of the person, that is, the first area 5 to 8th area, based on the input of each detection signal SG5 in sequence. Determine which position in the area.

Each drive motor 15, 16 is connected to the microcomputer 31 via a motor drive circuit 42, 43.

Then, the microcomputer 31 directs the air outlet 10 to the location of the person determined based on the detection signals SG5.
Each drive motor 15 via each motor drive circuit 42.43
, 16 to drive signal SG6. Output SG7. Each drive motor 15, 16 receives a drive signal SG6.
Normal rotation, reverse rotation, and stop are performed based on SG7, thereby rotating the movable housing cylinder 4 and the movable duct 5, and detecting the air outlet 10 of the cold air duct 1 and the detection areas 21 to Z3 of the ultrasonic sensors 12 to 14. The direction is integrally changed and controlled.

Furthermore, the microcomputer 31 has limit switches 22 and 23.
are connected, and on/off signals from the switches 22 and 23 are input to the microcomputer 31.

The microcomputer 31 outputs a drive signal SC to each motor drive circuit 42 and 43;6. The SC2 determines forward rotation, reverse rotation, and stop of each drive motor 15, 16, and the drive time of each drive motor 15, 16, that is, the drive time of each drive motor 15. Determine the drive amount of 16.

In this embodiment, the microcomputer 31 and other components related to the electrical configuration are disposed within the movable housing cylinder 4, and power is supplied from the cooler main body via a power cord (not shown). .

Further, the power cord and the lead wires (paths shown) of the ultrasonic sensors 12 to 14, etc., are all arranged inside each duct 3.5 and the movable housing cylinder 4.

Next, the operation of the interpersonal communication device configured as described above will be explained with reference to FIGS. 7 and 8.

Incidentally, the flowchart in FIG. 8 shows the control operation of the microcomputer 31.

When the power of the cooler main body is turned on, the main body is started, cold air is distributed through the main duct 2, cold air is blown out from the outlet 10 of the cold air duct 1, and the microcomputer 31 is started and the direction of the cold air duct 1 is blown out. Control begins.

First, in step 101, background storage processing is executed. That is, as a pre-processing for bending and driving the cold air duct 1 to follow the movement of a person, current background objects (for example, fixed objects such as work tables, machines, etc.) placed around the lower part of each ultrasonic sensor 12 to 14 are In order to determine and store the distance to the ultrasonic reflecting object), the direction of the cold air duct 1 is changed by driving each drive motor 15, 16 in the forward and reverse directions. The direction of the detection areas 21 to Z3 is changed. Further, whenever the direction of each detection area Zl-23 is changed, each of the ultrasonic sensors 12 to 14 is driven to transmit and receive ultrasonic waves. In subsequent processing, this distinguishes whether the detection signal from each ultrasonic sensor 12 to 14 is a detection signal of a person to be followed or a detection signal of a background object originally installed at that location. This is the process performed for this purpose.

Next, the process moves to step 102 and the first ultrasonic sensor 1
2, it is determined whether or not a person is detected.

Here, the distance from each of the ultrasonic sensors 12 to 14 to the background object stored in advance in step 101 is compared with the current distance to the ultrasonic reflecting object.

Then, when the distance to the background object is greater than the current distance to the ultrasonic reflecting object, the first ultrasonic sensor 1
2, it is assumed that a person has been detected and the process moves to step 103.

In step 103, it is determined whether or not the second ultrasonic sensor 13 has detected a person. Then, as in step 102, the distance to the background object and the current distance to the ultrasonic reflecting object are compared, and if the distance to the background object is greater than the distance to the ultrasonic reflecting object, It is assumed that a person has been detected by the second ultrasonic sensor 13, and the process moves to step 104.

In step 104, it is determined whether or not the third ultrasonic sensor 14 has detected a person. Then, as described above, if the distance to the background object is greater than the distance to the ultrasonic reflecting object, it is assumed that a person has been detected by the third ultrasonic sensor 14, and the process moves to step 105.

That is, in step 105, all the ultrasonic sensors 12 to 1
4, it means that a person exists in the seventh area g where a person is detected, and the driving of each drive motor 15, 16 is stopped and the outlet 10 of the cold air duct 1 is directed towards the person in the seventh area g. . Then, step 102 hejumps.

Further, if the third ultrasonic sensor 14 does not detect a person in step 104, the process moves to step 106. Then, in step 106, a person exists within the second area where a person is detected by the first and second ultrasonic sensors 12 and 13, and each drive motor 15. L6 is driven and controlled to direct the outlet 10 of the cold air duct 1 toward the person in the second area, that is, in the direction B. That is, the direction of the cold air duct 1 is controlled so that all the ultrasonic sensors 12 to 14 detect a person. Then, step 102 hejumps.

If no person is detected by the second ultrasonic sensor 13 in step 103, the process moves to step 107 and it is determined whether or not the third ultrasonic sensor 14 detects a person. If a person is detected by the third ultrasonic sensor 14, the process moves to step 108. In step 108, a person exists in the sixth area f where a person is detected by the first and third ultrasonic sensors 12.14, and the drive motors 15 and 16 are controlled to The air outlet 10 is directed toward people within the 6th SI area, that is, in the direction F. Then, step 102 hejumps.

If the third ultrasonic sensor 14 does not detect a person in step 107, the process moves to step 109.

Then, in step 109, since a person exists in the first area a where the person is detected only by the first ultrasonic sensor 12, the drive motors 15 and 16 are controlled to drive the cold air duct 1. The air outlet 10 is directed toward the person in the first area a, that is, in the direction A. Then, step 102 hejumps.

Meanwhile, in step 102, the first ultrasonic sensor 12
If no person is detected, the process moves to step 110 and it is determined whether or not the second ultrasonic sensor 13 detects a person.

If a person is detected by the second ultrasonic sensor 13 in step 110, the process moves to step 111 and the third ultrasonic sensor 13 detects a person.
It is determined whether or not a person is detected by the ultrasonic sensor 14 of.

If the third ultrasonic sensor 14 does not detect a person in step 111, the process moves to step 112.

Then, in step 112, since a person exists in the third area C where a person is detected only by the second ultrasonic sensor 13, each drive motor 15, 16 is driven and controlled to control the air outlet of the cold air duct 1. 10 toward the person in the third area C, that is, in the direction C. Then, the process jumps to step 102.

If a person is detected by the third ultrasonic sensor 14 in step 111, the process moves to step 113.

Then, in step 113, it is determined that a person exists in the fourth area d where a person is detected by the second and third ultrasonic sensors 13 and 14, and the drive motors 15 and 16 are controlled to drive the cold air duct. One air outlet 10 is directed toward the person in the fourth area d, that is, in the direction. Then, step 102 hejumps.

If no person is detected by the second ultrasonic sensor 13 in step 110, the process moves to step 114. In step 114, it is determined whether a person is detected by the third ultrasonic sensor 14.

If a person is detected by the third ultrasonic sensor 14 in step 114, the process moves to step 115. Then, in step 115, it is determined that a person exists in the fifth region e where a person is detected only by the third ultrasonic sensor 14, and the drive motors 15 and 16 are driven and controlled to control the air outlet of the cold air duct 1. 10 toward the person in the fifth area e, that is, in the direction E. Then, in step 102, the hejump is performed.

If the third ultrasonic sensor 14 does not detect a person in step 114, the process moves to step 116.

Then, in step 116, all the ultrasonic sensors 12 to
8th area (non-detection area) h where people are not detected due to 14
Since there is a person present in the room, the driving of each of the drive motors 15 and 16 is stopped, and the direction control of the cold air duct 1 is stopped.

Then, step 102 hejumps.

Directional control of the cold air duct 1 is performed as described above.

For example, when a person exists in the third area C, the person is detected only by the second ultrasonic sensor 13, and the drive motors 15 and 16 are controlled to drive the air outlet 1 of the cold air duct 1.
0 begins to be bent towards direction C. Eventually, when the outlet 10 of the cold air duct 1 is directed toward a person and cold air hits the person in spots, the person will be detected in the seventh region g where all the ultrasonic sensors 12 to 14 detect the person. become.

As a result, the drive of each drive motor 15, 16 is stopped,
Direction control of the cold air duct 1 is stopped with the blower outlet 10 facing the person.

After that, when the person moves, the direction of the cold air duct 1 is controlled to follow the movement in the same manner as described above, and the cold air from the outlet 10 is always applied to the person in a spot.

As described above, in this embodiment, each ultrasonic sensor 12 to 1
4, if a person exists in any position within each of the detection areas 21 to Z3, the cold air duct l
The direction of the air outlet 10 can be two-dimensionally changed in each direction A-F so that it can be directed toward the person, thereby providing local cooling to the person. Furthermore, even if a person moves within each of the detection areas 71 to Z3, the direction control of the cold air duct 1 allows the blower outlet 10 to follow the movement and point toward the person.

As a result, it is possible to constantly blow cold air onto the person, thereby improving the feeling of cooling the person receives.

Further, in this embodiment, the cold air duct 1 has been described to follow the movement of a person, but the movement of the cold air duct 1 can be made to follow the movement of not only a person but also a moving object other than a person.

Note that this invention is not limited to the above embodiments,
The present invention can be implemented as follows by changing a part of the structure as appropriate without departing from the spirit of the invention.

(1) In the embodiment described above, the direction of the cold air duct 1 is controlled by a combination of the movements of the movable housing cylinder 4 and the movable duct 5, which are rotatable in directions perpendicular to each other.
As shown in FIG. 9, the movable housing tube 4 is provided so as to be rotatable once on the central axis of the fixed duct 3, and the movable duct 5 is provided so as to be rotatable back and forth in a predetermined direction with respect to the movable housing tube 4, The configuration may be such that the direction of the cold air duct 1 is controlled by a combination of movements of both 4 degrees and 5 degrees.

Further, in the above embodiment, three ultrasonic sensors 12 to 14 were provided, but as shown in FIG.
, 47, 48, and 49, or a greater number of sensors may be provided.

(2) In the above embodiment, the person-following device was embodied in the cold air duct 1 of the spot cooler, but for example, as shown in FIG. 10, a movable frame 51 that can reciprocate on a pair of guide rails 50 is provided, and A movable block 52 that can reciprocate in a direction perpendicular to the moving direction of the frame 51 is provided on the movable frame 51, and three ultrasonic sensors 12 to 14 provided on a part of the movable block 52 detect and disable detection. Based on the detection, the drive motors 53, 54 of each member 51, 52
It may be embodied in a conveyance mechanism in which the movable block 52 is moved two-dimensionally by controlling the drive of the movable block 52.

In this case, by disposing this transport mechanism on the ceiling of the room, the movable block 52 can be moved to follow the movement of the person. Further, for example, necessary tools and the like can be suspended from the movable block 52 (thereby, the tools can be moved to follow the movement of a person).

In addition, spot heaters for local heating,
The present invention may be implemented in a security camera or the like that takes pictures by following the movement of a person. In short, it can be embodied in any device as long as it directs the direction of action toward a person.

[Effects of the Invention] As detailed above, according to the present invention, it can be used in devices such as spot coolers, and has the excellent effect of being able to follow the direction of action in accordance with the two-dimensional movement of a person. Demonstrate.

[Brief explanation of the drawing]

FIG. 1 is a diagram corresponding to the claims of this invention, FIG. 2 is a block circuit diagram showing an embodiment of the invention, and FIG. 3 is a block circuit diagram showing the electrical configuration of a human tracking device. FIG. 3 is a perspective view of a cold air duct. Figure 4 is a partially cutaway side view showing the configuration of the cold air duct, Figure 5 is a frog's perspective view of the cold air duct explaining the arrangement of each ultrasonic sensor, Figure 6 is a perspective view showing the drive mechanism of the cold air duct, FIG. 7 is a plan view illustrating the overlapping of the detection areas, and FIG. 8 is a flowchart illustrating the operation of the human tracking device. FIG. 9 is a perspective view of a cold air duct showing another embodiment embodying the present invention, and FIG. 10 is a perspective view of a conveying mechanism showing another embodiment. In the figure, Ml is a detection means, M2 is a movable frame, M3 is a drive means, M4 is a discrimination means, M5 is a control means, 1 is a cold air duct as a movable frame, and 1st to 3rd super as means 12 to 14. A sound wave sensor, 16 a drive motor as a drive means, 31
46 is an ultrasonic sensor as a detection means, a drive motor as a 53° drive means, and Z1 to Z3 to third detection areas. Patent applicant Nippondenso

Claims (1)

[Scope of Claims] 1. Three or more detection means each having a directional detection area and each detecting a person within the detection area, and each of the detection areas being oriented in substantially the same direction and a portion thereof. supporting each of the detection means so that they overlap each other, and
A movable frame in which each detection means can be integrally moved in a two-dimensional direction, a drive means for driving the movable frame, and a detection or non-detection combination of the detection means a determining means for determining the presence position; and a control means for controlling the operation of the driving means to drive the movable frame so that the person at the present position determined by the determining means is detected by all the detecting means. An interpersonal tracking device characterized by: