JPH0498599A - Alarm unit for invasion of person - Google Patents

Abstract

PURPOSE:To obtain a device not giving incongruity to a visitor by providing a device which detects the infrared ray radiated from a person and issues the barking of a dog when the presence of a person is decided at a cabinet resembling the dog. CONSTITUTION:An infrared detector 2 is provided at the cabinet 1 formed resembling the dog so as to expose whose detecting part over the cabinet 1. Furthermore, a decision part 3 which decides the presence of the person by the output signal of the infrared detector 2, and an alarm part 4 which issues the barking of the dog as an alarm tone are provided. When the person approaches, the infrared ray radiated from the person is detected by the infrared detector 2, and the output signal is sent to the decision part 3. The decision part 3 drives the alarm part 4 when judging the presence of the person by temperature difference with a background and the size of an infrared radiator entering the visual field range of the infrared detector 2, etc., from the output signal of the infrared detector 2, and issues the barking of the dog as an alarm for the invasion of the person.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a human intrusion alarm device that warns of human intrusion around a house or the like.

BACKGROUND OF THE INVENTION In recent years, awareness of crime prevention in the home has increased due to the increase in the number of nuclear families and the decrease in social relationships among neighbors, and intrusion alarm devices for home use have begun to become popular. A conventional human intrusion alarm device will be described below.

A human intrusion alarm device usually uses a pyroelectric infrared sensor or the like to detect a person's body temperature and warn of the presence of a person. By installing multiple intruder alarm devices like this around a house, they could sound an alarm to people trying to break into the house, and play a role in preventing crimes. .

Problems to be Solved by the Invention However, such conventional human intruder alarm devices are aesthetically undesirable when installed around the house, and may also be difficult to use if the intruder alarm device is conspicuous or if the alarm device is not used by visitors. There is a problem in that if the system reacts to the situation and issues an alarm with an electronic sound or the like, it may cause discomfort to the guests.

The present invention solves the above-mentioned problems, and aims to provide an intrusion alarm device that does not spoil the appearance of a house (and does not cause discomfort to guests).

Means for Solving the Problems In order to achieve the above object, the present invention includes an infrared detector that detects infrared rays emitted from a person, a determination unit that determines the presence of a person from the output signal of this infrared detector, An alarm section that emits a dog's bark as an alarm sound when the determination section determines the presence of a person is installed in a casing made to resemble a dog.

According to the above-described configuration, the infrared detector housed in a housing made to resemble a dog detects infrared rays emitted from a human, and when the determination section determines the presence of a human, , a dog's bark is emitted as an alarm sound from a housing made to resemble a dog.

Example Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

As shown in the figure, the detection part of an infrared detector 2 consisting of a pyroelectric infrared sensor is installed in a housing 1 made to resemble a dog.
A determination unit 3 is provided in the housing 1 to determine the presence of a person based on a signal sent from the infrared detector 2, and an alarm that emits a dog barking sound based on the signal from the determination unit 3. Section 4 is comprised of the following.

In the above configuration, when a person approaches the human intrusion alarm device,
When the infrared rays emitted from a person are detected by the infrared detector 2 and the output signal is sent to the determination unit 3, the determination unit 3 detects the infrared detector 2.
Regarding the output signal, if it is determined that a person is present based on the temperature difference with the background and the size of the infrared emitter that has entered the field of view of the infrared detector 2, the alarm unit 4 is activated,
A dog barks as a warning against human intrusion.

Effects of the Invention As is clear from the above embodiments, according to the present invention, the casing for emitting an alarm is made to resemble a dog, so it can be installed around a house without spoiling the aesthetics. To provide a human intrusion alarm device that does not make the intrusion alarm conspicuous or gives less discomfort to the visitor even if the alarm sound is emitted to the visitor if it is the bark of a dog.

[Brief explanation of drawings]

The figure is a block diagram of a human intrusion alarm device according to an embodiment of the present invention. 1...A housing made to resemble a dog, 2...
・Infrared detector, 3... Judgment section, 4...
・Alarm section. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (1)

[Claims] An infrared detector that detects infrared rays emitted from a person, a determination unit that determines the presence of a person from the output signal of this infrared detector, and a dog bark as an alarm sound when the determination unit determines the presence of a person. This human intrusion alarm device has an alarm unit that emits an alarm and a casing made to resemble a dog.