JP2945555B2 - Human body detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human body detecting device for detecting the presence of a human body without contact.

[0002]

2. Description of the Related Art A conventional human body detecting apparatus of this type includes, for example, an apparatus utilizing infrared rays as a radio signal medium.
As an example of an infrared type human body detection device, a light emitting unit that emits infrared light and a light receiving unit that receives infrared light reflected by a human body,
An output unit that detects the presence of a human body by receiving infrared rays and outputs an electric signal to the outside, turns on the output when the presence of a human body is detected, and outputs when it is not detected. There is something to turn off.

[0003]

However, in the above-described human body detection device, when it is desired to always turn the output on or off irrespective of the presence of a human body, a switching electric circuit for newly turning the output on / off is required. Need to be provided, thereby causing a problem that the overall configuration becomes complicated and costs increase.

[0004] The present invention has been made in view of the above problems, and has as its object to provide a human body detection device which realizes a function of constantly turning on or off an output regardless of the presence of a human body with a simple configuration. Things.

[0005]

According to a first aspect of the present invention, there is provided a transmitting means for emitting a radio signal medium, and a receiving means for receiving a radio signal medium reflected on an object such as a human body. Means for detecting the presence of the object by the receiving means receiving the reflected wireless signal medium, wherein the path from the wireless signal medium emitted from the transmitting means to the object is reflected by the object. And a reflecting means comprising a reflecting surface for reflecting the wireless signal medium in a direction that can be received by the receiving means when moved to a position reflecting the wireless signal medium.

According to a second aspect of the present invention, when the reflection means is moved to a position reflecting the radio signal medium, the reflection means comprises a reflection surface for reflecting the radio signal medium in a direction in which the reception means cannot receive. is there. Further, the invention according to claim 3 is characterized in that, when the reflection means is moved to a position for reflecting the wireless signal medium, a reflection surface for reflecting the wireless signal medium in a direction in which the reception means can receive, And a reflecting surface that reflects the wireless signal medium in a direction in which reception is not possible.

[0007]

According to the first aspect of the present invention, there is provided a transmitting means for emitting a radio signal medium, and a receiving means for receiving a radio signal medium reflected on an object such as a human body, wherein the receiving means is a reflected radio signal medium. In a human body detection device for detecting the presence of an object by receiving a signal, a wireless signal medium emitted from the transmitting means is movably provided on the path to the receiving means after being reflected by the object, Is provided with a reflecting surface that reflects the wireless signal medium in a direction that can be received by the receiving means when the reflecting means is moved to a position where the light is reflected. By moving the reflecting means, a wireless signal emitted from the transmitting means is provided. It is possible to switch between a state in which the medium is always received by the receiving means and a normal state in which the receiving means receives the radio signal medium reflected on the object and detects the presence of the object. A.

Further, in the configuration of the second aspect of the present invention, when the reflection means is moved to a position for reflecting the radio signal medium, the reflection means reflects the radio signal medium in a direction in which the reception means cannot receive. Therefore, by moving the reflection means, the reception means does not always receive the wireless signal medium emitted from the transmission means, and the reception means receives the wireless signal medium reflected on the object to detect the presence of the object. It is possible to switch from the normal state.

Further, according to the third aspect of the present invention, when the reflection means is moved to a position for reflecting the radio signal medium, the reflection surface reflects the radio signal medium in a direction in which the reception means can receive. And a reflecting surface that reflects the wireless signal medium in a direction that the receiving means cannot receive,
A state in which the receiving means always receives the wireless signal medium emitted from the transmitting means, a state in which the receiving means does not always receive the wireless signal medium emitted from the transmitting means, and a state in which the receiving means receives the wireless signal medium reflected on the object. Thus, it is possible to switch from a normal state in which the presence of an object is detected.

[0010]

【Example】

(Embodiment 1) FIG. 11 shows a general schematic block diagram of an infrared type human body detection device 1 in the following embodiment. The infrared type human body detection device 1 receives a light emitting element 2 such as a laser diode that emits infrared light, a light receiving element 3 such as a photodiode that receives infrared light reflected on an object such as a human body, and an output from the light receiving element 3. A control unit 14 for detecting the presence of an object such as a human body; an external device 15 is connected to the control unit 14; when the control unit 14 detects an object such as a human body, the external device 15 operates. Let it do.

As an example of using the infrared type human body detecting device 1 as described above, a faucet fitting 10 for a wash basin as shown in FIG. 1A will be described in detail below. The faucet fitting 10 is formed of a substantially rectangular-shaped callan 11 and a base 9 for fixing the callan 11, and the infrared type human body detection device 1 is provided inside the base 9. As shown in FIG. 1C, the base 9 has a two-layer structure including two substantially cylindrical cylinders 4 and 5, and the outer cylinder 5 rotates with respect to the inner cylinder 4. It is provided freely. Further, as shown in FIG. 1B, a handle 8 for manually rotating is provided on the outer cylindrical body 5, and the light emitting element 2 and the light receiving element 3 of the infrared type human body detecting device 1 are inside. Cylinder 4
Are arranged in parallel inside. Further, a water pipe (not shown) is provided inside the inner cylinder 4. And
The light emitting element 2 of the infrared type human body detecting device 1 is
An opening 6 for exposing the light-receiving element 3 and the light-receiving element 3, and a reflecting portion 7 formed by a reflecting surface having a substantially trapezoidal concave cross section, and rotating the outer cylindrical body 5. Thus, the opening 6 and the reflecting portion 7 can be selectively arranged on the front surface of the light emitting element 2 and the light receiving element 3 of the infrared human body detecting device 1. In such a faucet fitting 10, when the infrared-type human body detection device 1 detects a human body, the flow of water in a water pipe (not shown) provided inside the caran 11 is discharged.
A valve (not shown) for stopping is opened, and water is discharged from a faucet 12 provided at the tip of the curan 11 through a water pipe (not shown). When the human body is no longer detected, the valve (not shown) is closed. It stops the water.

Now, as shown in FIG. 2, when the opening 6 is arranged in front of the light emitting element 2 and the light receiving element 3 of the infrared type human body detecting device 1, the infrared ray emitted from the light emitting element 2 transmits the opening 6 When the object (human body) is present and passes through the aperture and there is an object (human body), the infrared ray reflected on the object passes through the opening 6 and enters the light receiving element 3 in the same manner, so that the object is detected. You can do it. On the other hand, as shown in FIG. 1C, the light emitting element 2 and the light receiving element 3 of the infrared type human body detecting device 1
When the reflecting portion 7 is arranged on the front surface of the light emitting element 2, the infrared ray emitted from the light emitting element 2 repeatedly reflects on the reflecting surface of the reflecting section 7 and enters the light receiving element 3, so that the infrared ray always enters the light receiving element 3. Thus, the state in which the object is detected is maintained, and the state in which water is flowing out of the faucet 12 is maintained.

Therefore, as described above, the outer cylinder 5
By rotating, it is possible to switch between a normal state in which the infrared-type human body detection device 1 detects a human body to stop the water and a state in which water is constantly discharged regardless of the detection of the human body. is there. In the present embodiment, the above-mentioned two states are switched by rotating the outer cylinder 5. However, as shown in FIG. The opening 4 may be provided in the outer cylinder 4, the outer cylinder 5 may be vertically movable relative to the inner cylinder 4, and the outer cylinder 5 may be switched by moving the outer cylinder 5 up and down.

(Embodiment 2) This embodiment also relates to a faucet fitting 10 for a wash basin. The configuration of the main part is the same as that of the first embodiment, and a description thereof will be omitted. This embodiment differs from the first embodiment in that, as shown in FIG.
Is provided with a reflecting portion 13 formed of a reflecting surface having a substantially triangular recess.

As shown in FIG. 4, when a reflecting portion 13 is arranged in front of the light emitting element 2 and the light receiving element 3 of the infrared type human body detecting device 1, the infrared ray emitted from the light emitting element 2 is received by the reflecting portion 13. Since the light is reflected in a direction different from the direction toward the element 3, the light does not reach the light receiving element 3. Therefore, the infrared human body detecting device 1 provided inside the faucet fitting 10 cannot detect a human body, and the valve (not shown) is opened even if a person is present in the detection area of the infrared human body detecting device 1. There is no water because it does not open. However, as shown in FIG. 5, when the opening 6 is arranged in front of the light emitting element 2 and the light receiving element 3 of the infrared type human body detecting device 1 as in the first embodiment, the object can be detected. is there.

Therefore, by rotating the outer cylinder 5 as described above, the normal state in which water is stopped by detection of a human body and the state in which water is always stopped regardless of detection of a human body are switched. You can do it. In the present embodiment, the above-mentioned two states are switched by rotating the outer cylinder 5. However, as shown in FIG. The opening 4 may be provided in the outer cylinder 4, the outer cylinder 5 may be vertically movable relative to the inner cylinder 4, and the outer cylinder 5 may be switched by moving the outer cylinder 5 up and down.

(Embodiment 3) This embodiment also relates to a faucet for a wash basin, and the configuration of the main part is the same as that of the first embodiment, so that the description is omitted. This embodiment is different from the first and second embodiments in that, as shown in FIG. 7, the outer cylindrical body 5 has a reflecting portion 7 formed by a reflecting surface having a substantially trapezoidal concave portion in the outer cylindrical body 5. That is, a reflecting portion 13 formed of a reflecting surface having a recess whose cross section is substantially triangular is provided.

As shown in FIG. 7, when the reflecting portion 7 is arranged in front of the light emitting element 2 and the light receiving element 3 of the infrared type human body detecting device 1, the infrared ray is always incident on the light receiving element 3. The type human body detection device 1 detects an object and keeps a state in which a valve (not shown) is opened, and a state in which water flows out of the faucet 12. In addition, as shown in FIG. 8, when the reflection unit 13 is disposed on the front surface of the light emitting element 2 and the light receiving element 3 of the infrared human body detection device 1, the infrared human body detection device 1 cannot detect a human body, Even if there is a person in the detection area of the infrared type human body detection device 1, the valve (not shown) remains closed and no water is discharged from the faucet 12. However, as shown in FIG.
Similarly, when the opening 6 is arranged on the front surface of the light emitting element 2 and the light receiving element 3 of the infrared type human body detecting device 1, the object can be detected.

Therefore, as described above, the outer cylinder 5
Rotating the switch between the normal state of stopping water by detecting the human body, the state of always discharging water regardless of the detection of the human body, and the state of constantly stopping water regardless of the detection of the human body You can do it. In the present embodiment, the above two states are switched by rotating the outer cylinder 5, but as shown in FIG.
The reflection part 7 and the reflection part 13 are vertically arranged side by side, the opening 6 is provided in the inner cylinder 4, and the outer cylinder 5 is disposed so as to be vertically movable with respect to the inner cylinder 4. Alternatively, the switching may be performed by moving the outer cylinder 5 up and down.

In the first to third embodiments, when the reflecting surface is formed of a resin, infrared rays are irregularly reflected by the reflecting surface. Therefore, the cross section of the reflecting portion 7 is not limited to a substantially trapezoidal concave portion. For example, it may be a semi-cylindrical concave portion.
However, the reflection surface forming the reflection portion 13 cannot be formed of resin because infrared rays enter the light receiving element 3 due to irregular reflection, and it is necessary to use a mirror-like reflection surface such as metal or plating tape. is there. In the case of the above-mentioned mirror-like reflecting surface, the infrared rays do not diffusely reflect at the reflecting surface, so that the cross section of the reflecting portion 7 has an infrared ray emitted from the light emitting means 2 like a substantially trapezoidal concave portion. Need to reach the light receiving element 3.

In the above-described embodiment, an infrared type human body detecting device using infrared rays as a radio signal medium has been described. For example, an ultrasonic type human body detecting device using ultrasonic waves as another radio signal medium may be used. Even so, the technical idea of the present invention can be applied.

[0022]

According to the first aspect of the present invention, there is provided a transmitting means for emitting a radio signal medium, and a receiving means for receiving a radio signal medium reflected on an object such as a human body, wherein the receiving means is a reflected radio signal medium. In a human body detection device for detecting the presence of an object by receiving a signal, a wireless signal medium emitted from the transmitting means is movably provided on the path to the receiving means after being reflected by the object, Is provided with a reflecting surface that reflects the wireless signal medium in a direction that can be received by the receiving means when the reflecting means is moved to a position where the light is reflected. By moving the reflecting means, a wireless signal emitted from the transmitting means is provided. It is possible to switch between a state in which the receiving means always receives the medium and a normal state in which the receiving means receives the radio signal medium reflected on the object and detects the presence of the object. Intellectual apparatus there is an effect that mechanism for switching between a state and a normal detection state where an object is detected at all times, such as human can be realized with a simple configuration.

According to a second aspect of the present invention, when the reflection means is moved to a position reflecting the radio signal medium, the reflection means comprises a reflection surface for reflecting the radio signal medium in a direction in which the reception means cannot receive. By moving the reflecting means, the receiving means does not always receive the wireless signal medium emitted from the transmitting means, and the receiving means receives the wireless signal medium reflected on the object to detect the presence of the object. And a mechanism for switching between a state where the human body detection device does not always detect an object such as a human body and a normal detection state can be realized with a simple configuration.

Further, according to the invention of claim 3, when the reflecting means is moved to a position reflecting the radio signal medium,
The reflecting surface reflects the wireless signal medium in a direction in which the receiving means can receive, and the reflecting surface reflects the wireless signal medium in a direction in which the receiving means cannot receive. A state where the receiving means always receives the signal, a state where the wireless signal medium emitted from the transmitting means is not always received by the receiving means, and a state where the receiving means receives the wireless signal medium reflected on the object and detects the presence of the object And a mechanism for switching between a state where the human body detection device constantly detects an object such as a human body, a state where it is not always detected, and a normal detection state can be realized with a simple configuration. effective.

[Brief description of the drawings]

FIGS. 1A and 1B show Example 1; FIG. 1A is an overall perspective view of a faucet, FIG. 1B is a front view of a base of the faucet, FIG.
(C) is an AA cross-sectional view of (b), and shows a case where the reflection unit is located on the front surface of the light emitting element and the light receiving element of the infrared human body detection device.

FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 (b), showing the case where an opening is located in front of a light emitting element and a light receiving element of the infrared human body detection device.

FIG. 3 is an overall perspective view of the faucet fitting when the direction of movement of the outer cylinder is different from that of the above.

FIG. 4 is a cross-sectional view of a base of a faucet according to a second embodiment, showing a case where a reflecting portion is provided on a front surface of a light emitting element and a light receiving element of an infrared human body detecting device.

FIG. 5 is a cross-sectional view of the base of the faucet fitting, showing the case where an opening is in front of a light emitting element and a light receiving element of the infrared human body detecting device.

FIG. 6 is an overall perspective view of the faucet fitting when the direction of movement of the outer cylinder is different from that of the above.

FIG. 7 is a cross-sectional view of a base of a faucet according to a third embodiment, showing a case where a reflection section having a substantially trapezoidal cross-section is on the front surface of a light-emitting element and a light-receiving element of an infrared human body detection device. is there.

FIG. 8 is a cross-sectional view of a base of the water faucet fitting, showing a case where a reflection section having a substantially triangular cross section is provided on the front surface of the light emitting element and the light receiving element of the infrared human body detecting device.

FIG. 9 is a cross-sectional view of a base of the water faucet fitting, showing a case where an opening is in front of a light emitting element and a light receiving element of the infrared human body detecting device.

FIG. 10 is an overall perspective view of the faucet fitting when the direction of movement of the outer cylinder is different from that of the above.

FIG. 11 is a schematic block diagram of an infrared human body detection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Infrared human body detection device 2 Light emitting element 3 Light receiving element 4 Inner cylinder 5 Outer cylinder 6 Opening 7 Reflecting part 8 Handle 9 Base 10 Water faucet fitting 11 Callan 12 Faucet

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁶ , DB name) G01S 13/00-17/88 E03C 1/05 H01H 35/00

Claims (3)

(57) [Claims] A transmitting means for emitting a radio signal medium; and a receiving means for receiving a radio signal medium reflected on an object such as a human body. In the human body detecting device for detecting the presence of the wireless signal medium, the wireless signal medium emitted from the transmitting means is movably provided in the middle of the path to the receiving means after being reflected by the object, and is moved to a position reflecting the wireless signal medium. A human body detection device comprising: a reflecting means comprising a reflecting surface for reflecting a wireless signal medium in a direction in which the receiving means can receive the signal when the human body is detected. 2. The apparatus according to claim 1, wherein said reflecting means comprises a reflecting surface for reflecting the wireless signal medium in a direction in which the receiving means cannot receive the signal when moved to a position reflecting the wireless signal medium. The human body detection device according to the above. 3. The reflecting means, when moved to a position reflecting the wireless signal medium, reflects a wireless signal medium in a direction in which the receiving means can receive, and a reflecting surface in which the receiving means cannot receive. 3. The human body detecting device according to claim 1, further comprising a reflecting surface for reflecting the wireless signal medium toward the human body.