JPS63172985A - Detecting method for lost article and thing left behind - Google Patents

Abstract

PURPOSE:To easily and securely search for a lost article, etc., by mounting a receiver which catches a radio wave from a transmitter selectively and outputs a warning on the lost article and a thing left behind. CONSTITUTION:When the lost article is searched for, the switch 5 of the transmitter A is turned on to turn on a power source. Consequently, a prescribed radio wave corresponding tot he kind of the lost article, etc., is outputted from a transmitting antenna 4 through an identification signal generation part 1 and a transmission part 2. This outputted radio wave of prescribed frequency is received by a reception part 7 through the receiving antenna 10 of a receiver B mounted on the lost article, etc. Then warning is displayed through a warning signal generation part 8 and a warning display part 9. This display is made with light, sound, etc. Then the lost article is easily and securely searched for.

Description

[Detailed Description of the Invention] r Industrial Application Field The present invention is a method for detecting lost or forgotten items (hereinafter simply referred to as lost items, etc.) that can reliably locate the location within a certain area. It is about the method.

r Conventional technology A Conventionally, methods for confirming the location using detection signals include large radar and sonar systems that detect flying objects, schools of fish, and seabed conditions1, as well as smaller and smaller radar systems. There is a method of confirming the position of a moving object such as a moving vehicle or automobile via radio waves. In addition, various technical documents similar to this have been proposed.
No. 76 is a system that detects the position of a moving object using a light beam as a medium.It eliminates troublesome inspections, is easy to maintain, and is not subject to regulations such as the Radio Law. It is intended as a detection method. There is also an individual detection method disclosed in Japanese Patent Application Laid-Open No. 60-47973, the gist of which is that it is attached to each grazing animal. ′! 4.The system consists of a transmitter that transmits a message containing the unique identification code, and a receiver that receives the transmitter, and is configured to confirm the location of each animal by detecting it from a remote location. In addition, there is a traveling obstacle warning device disclosed in Japanese Patent Publication No. 61-16948, the gist of which is that light is received individually by each element of a photodetecting element array provided near the wheel, and the output level of each element of the array is formed. It is configured to compare the exit cover turn with a pre-memorized reference pattern of the road surface, detect the presence or absence of an obstacle, and issue a warning to prevent accidents such as the vehicle falling off the road in a ditch, or coming into contact with an obstacle. The goal is to prevent it from happening.

Problems to be Solved by the Invention J Each of the above techniques can be expected to produce certain results. However, on the other hand, both have complicated configurations, resulting in problems such as complicated handling and increased costs. In addition, in principle, both methods identify objects such as moving objects within a visible range, and their purpose is clearly different from the method of the present invention, which detects lost items that are out of sight. Currently, there is no suitable device for detecting lost items, particularly in simple homes, offices, etc., which is the main purpose of the present invention.

r I! '! + Means for Solving the Problem 1■ In view of the above, the present invention provides a method for detecting a lost item, etc., which can reliably locate a lost item, etc. using a simple device. A lost or forgotten item consists of a transmitter that emits radio waves of a certain frequency and a receiver that selectively catches the radio waves from this transmitter.1 radio waves of a certain frequency from the transmitter. a, which is emitted from the receiver via
This configuration uses warning displays such as lights to help locate lost or forgotten items.

r Effect J Next, to explain the outline of the effect of the present invention, when you want to search for a lost item, etc. 1, when you turn on the switch of the transmitter, a radio wave of a certain frequency is emitted from the transmitter. The lost item is detected by a receiver installed on the lost item.Then, this specific lost item issues an alarm display.This makes it very easy to locate the specific lost item.

Embodiment j The drawings show one embodiment of the present invention, and the present invention will be explained based on this example.

As shown in Fig. 1, the transmitter iA includes an identification signal generator 1 that transmits an identification signal depending on the type of lost item, etc., and an identification signal generator 1 that modulates the identification signal selected by the identification signal generator 1 with a carrier wave. A transmitting unit 2 that generates radio waves, and a power source 3 such as a battery or a rechargeable battery that supplies power to the identification signal generation f211 and the transmitting unit 2.
The transmitting section 2 is connected to an omnidirectional transmitting antenna 4 that emits radio waves. 5 in the figure is a switch.

As shown in FIG. 2, the receiver B includes a receiving section 7 that can detect received radio waves and selectively receive radio waves of a preset specific frequency, and a receiving section 7 in which the selected radio waves are input. An alarm signal generating section 8 emits an alarm signal based on the occurrence of the alarm, and an alarm signal is received from the alarm signal generating section 8 to display an alarm such as sound or light! The first report display section 9 is structured as 1&,
An omnidirectional receiving antenna 10 that receives radio waves from the transmitter A is connected to the receiving section 7. 11 in the figure supplies power to the receiving section 7, the alarm signal transmitting section 8, and the alarm display section 9. A power source 3 such as a battery or a rechargeable battery is provided, and 12 is a switch. Receiver B configured in this manner is susceptible to various types of loss,
Attached to items that are easily forgotten.

Note that it is also possible to use a configuration in which the identification signal transmitter l is connected to the transmitter (not shown), and a certain radio wave is transmitted from the transmitter A, and this is received by the receiver B equipped with the receiver (not shown). (It is Noh.

Next, to explain the present invention in detail, when trying to find a lost item etc., when the switch 5 of the transmitter 1 is turned on, the
5 enters. As a result, a predetermined radio wave is output from the transmission antenna 4 via the identification signal transmitter 1 and the transmitter 2 according to the type of lost item, etc. This output radio wave of a specific frequency is received by the receiver B. After being received in part 7,! An alarm display is generated from the specific lost item etc. via the J-report signal generator 8 and the alarm display unit 9. This makes it possible to search for lost items, and it is also very useful for finding lost items, for example, by relying on sound, even if the item is out of sight. In addition, if it is used, ・Transmitter A
, it goes without saying that the switch 3.12 of the receiver B should be turned off.

R-shot! ! Effects of 1 As described in detail above, the present invention is a method of individually locating lost items using a transmitter and a receiver installed on a lost item through an identification signal from one transmitter. Therefore, it is effective in making it possible to easily and reliably search for lost items. Furthermore, since it is carried out using a simple device, there are few failures and it can be provided at low cost. Furthermore, since the structure is simple, it is easy to handle and is the most suitable method for use in general homes, offices, etc.

[Brief explanation of the drawing]

The drawings are for explaining one embodiment of the present invention, and FIG. 1 is a block diagram of a transmitter, and FIG. 2 is a block diagram of a receiver.

Claims (3)

[Claims] (1) Lost or forgotten items are equipped with a transmitter and a receiver that selectively catches radio waves from the transmitter.
A method for detecting lost or forgotten items in which a lost or forgotten item is searched for using alarm displays such as sounds and lights emitted from a receiver via radio waves from a transmitter. (2) The method for detecting lost or forgotten items according to claim 1, wherein the radio waves from the transmitter have a constant frequency. (3) A lost item according to claim 1, wherein the radio waves from the transmitter have a frequency that is varied for each lost item or forgotten item;
How to detect lost items.