JPH01316684A - Human body detector - Google Patents

Abstract

PURPOSE:To prolong the life of a battery which serves as a power source and to maintain exact detection with substantially no need for labor such as checking by providing a photovoltaic battery and the secondary battery charged by the photovoltaic battery as the power source of a detection control circuit. CONSTITUTION:A photodetecting part 2 for the IR rays generated from a human body is provided on the outside of an outside frame 1 of the human body detector. An IR sensor 3 which outputs a voltage by detecting the change of the IR rays received by the photodetecting part 2, the detection control circuit 5 which generates the radio waves to transmit the detection of the human body to a control device upon reception of the output voltage therefrom and a transmission antenna 4 are disposed on the inside of said device. The photovoltaic battery 8 which generates electricity by the light of an electric lamp, etc., and the secondary battery 7 charged by the battery 8 are provided as the power source of the control circuit 5 to the inside of the device. The control circuit 5 is operated by the battery 8 and charges the battery 7 in the daytime or while interior lighting is held put on according to such constitution. The control circuit 5 is operate by the secondary battery in the nighttime or while the interior lighting is held put out and, therefore, the consumption of the battery is lessened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a human body detection device section of an automatic switching device that detects a human body and controls the power supply of a load using a wireless transmission method.

Conventional Technology Conventionally, there are no specific documents available for this type of wireless transmission type human body detection device, but for example, it has a built-in battery as a power source, and multiple units are installed independently on each wall in the room to make it easier to detect a human body. It is configured to send a wireless signal when a human body is detected to a switch operating unit attached to the wall of the room, and this switch operating unit turns on the power to the connected load. By controlling these human body detection devices and switch operation parts as a system, an automatic switch device using human body detection was constructed.

The general configuration of the human body detection device was as shown in FIG. In other words, the outer frame 1o of the human body detection device
A light receiving unit 102 that receives infrared rays from a human body is provided on the outside of the 1, and a pyroelectric infrared sensor 103 that detects changes in infrared rays and outputs a voltage is installed inside the infrared sensor 103.
A detection control circuit 105 consisting of a low power consumption C, MO8 circuit that generates radio waves to transmit the detection of a human body to a switch operation unit (not shown) in response to the output voltage of the detection control circuit 105;
A transmitting antenna 104 that sends this radio wave to the switch operation section and a battery 106 that serves as a power source for the detection control circuit 1o6 are provided.

Problems to be Solved by the Invention However, in such a conventional configuration, while the human body detection device continues to operate, how does the detection control circuit 106
Even though the device uses a C-MO8 circuit with low power consumption, the built-in battery 106 will wear down, and after a certain period of time, its life will come to an end and the human body detection device will no longer work accurately. . Alternatively, in order to prevent such a situation from occurring, it is necessary to periodically check the degree of consumption of the battery 106 and eventually replace it.

The present invention is intended to solve these problems, and aims to significantly extend the life of the battery that serves as the power source, and maintain accurate detection without requiring much effort such as checking. .

Means for Solving the Problem In order to solve this problem, the present invention provides a power source for a detection control circuit that generates radio waves in response to the voltage output by an infrared sensor when it detects infrared rays, using a photovoltaic battery and a light emitting cell. This is a secondary battery that is charged by a generator battery.

Operation With this configuration, the detection control circuit operates on the photovoltaic battery when the living room or indoor lights are on, and this photovoltaic battery charges the secondary battery, while at night or when the indoor lights are off. When the battery is dead, the detection control circuit operates using the secondary battery, and in this way, the consumption of the battery as a power source is extremely small.

EXAMPLE Hereinafter, an example of the present invention will be explained based on FIGS. 1 to 3.

In FIG. 1, outside the outer frame 1 of the human body detection device main body,
A light receiving part 2 for infrared rays 6 generated from the human body is provided, and inside,
A pyroelectric infrared sensor 3 that detects changes in the infrared rays 6 received by the light receiving unit 2 and outputs a voltage, and a load power supply (not shown) that receives the output voltage from the infrared sensor 3 and indicates that a human body has been detected. A low power consumption detection control circuit 6 that generates radio waves to be transmitted to the device, and a transmission antenna 4 that wirelessly transmits the radio waves to the control device of the load power source are provided. As a power source for the detection control circuit 6, a photovoltaic battery 8 that generates electricity from sunlight or light from an electric lamp is provided outside the outer frame 1, and a secondary battery 7 that is charged by the photovoltaic battery 8 is provided inside the outer frame 1. are doing.

Further, as shown in FIG. 2, between the detection control circuit 5, the photoluminescent battery 9, and the secondary battery 7, there is a secondary source that controls the power supply from each battery 9.7 to the detection control circuit 6. Kaihen 9 is connected.

Next, the function of the power supply port @9 will be explained based on FIG. In the figure, vs indicates the reference voltage supplied to the detection control circuit 5. Then, even if the voltage of the secondary battery 7 and the generated voltage v0 of the photovoltaic cell 8 fluctuate, the power supply circuit 9 performs control so as to always supply a voltage equal to this reference voltage vs to the detection control circuit 6. In other words, at the power supply port '@9, the amount of light θ incident on the photovoltaic cell 8 is small, and the generated voltage v0 is equal to the reference voltage vs.
If smaller (range of incident light amount θA in Figure 3)
In this case, the detection control circuit 6 receives power from the secondary battery 7.

On the other hand, if the amount of incident light θ is large, the generated voltage V.

is larger than the reference voltage vs. (range of incident light amount θB)
In this case, the detection control circuit 6 is supplied with only the voltage v0 generated by the photovoltaic battery 8, and further operates to charge the secondary battery 7 with the voltage v0 generated by the photovoltaic battery 80. Therefore, the detection control circuit 6 operates with the photovoltaic battery 8 when the living room or indoor lighting is on, and the secondary battery 7 is charged by the photovoltaic battery 8. At night or when the indoor lighting is turned off, the secondary battery 7 is operated.
The detection control circuit 5 is operated.

Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, by providing a photovoltaic battery and a secondary battery charged by the photovoltaic battery as a power source for the detection control circuit,
The consumption of the battery is extremely reduced, and its life is greatly extended, so that it is almost unnecessary to check the degree of consumption of the battery, and the effect of always being able to perform accurate human body detection control without much effort is achieved.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a human body detection device according to an embodiment of the present invention, FIG. 2 is a circuit configuration diagram of the human body detection device, FIG. 3 is an operation explanatory diagram of the power supply circuit of the human body detection device, and FIG. The figure is a schematic configuration diagram of a conventional human body detection device. 1...Outer frame, 3...Infrared sensor, 4
......Transmission antenna, 6...Detection control circuit, 7...Secondary battery, 8...Photovoltaic battery. Name of agent: Patent attorney Toshio Nakao and one other person

Claims (1)

[Claims] An infrared sensor that detects infrared rays emitted from the human body and outputs a voltage, a detection control circuit that receives this output voltage and generates radio waves, and a transmitting antenna that transmits the radio waves are arranged inside the outer frame of the main body. , a human body detection device in which the power source of the detection control circuit includes a photovoltaic battery and a secondary battery charged by the photovoltaic battery.