JPH031296A - Alarm system for crime prevention bag - Google Patents

Abstract

PURPOSE:To prevent a bag from being stolen by providing a means for receiving a main signal of a main transmitter by a main receiver, and raising a alam from the main receiver, when a distance of both equipments is separated and a level related to an arrival area of its signal becomes below a prescribed value. CONSTITUTION:On an equipment a provided on a bag, a main receiver and a sub- transmitter are provided, and on a portable equipment B of a person, a main transmitter and a sub-receiver are provided. In this state, a radio wave of the main transmitter is received by the main receiver, and while the receiving signal is in a prescribed level, no alarm (buzzer. etc.,) is raised from the main receiver, but when the main receiver of the bag is separated by some distance from the main transmitter of the portable equipment B, it is detached from an arrival area La of a prescribed signal and an alarm is raised from the main receiver. Also, the subtransmitter of the equipment a provided on the bag transmits a radio wave to the sub-receiver of the portable equipment B, but the sub-signal is in a different system which is not brought to interference with a main signal, an arrival area L1 of its prescribed signal is smaller than the arrival area La of the main signal, and an alarm is raised from the sub-receiver at a distance La. In such a way, it can be prevented that the bag is stolen.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a wireless security bag alarm system.

(Prior art) A bag is equipped with a receiver, and one person carries a transmitter.The receiver receives the wireless signal from the transmitter, and when the bag and the person are separated by a certain distance, the signal level received by the receiver decreases. A wireless security bag alarm system that issues an alarm from a receiver when the temperature falls below a predetermined value is a well-known system.

(Point U that the invention is trying to solve) In such a conventional security bag alarm system, when a bag is stolen and separated from its owner, the bag emits a very loud alarm sound. However, if the owner carelessly leaves the bag while standing in the toilet in a place where there is no risk of theft, such as a conference hall, the bag may make a loud noise. This will cause a great deal of trouble to people around you.

This invention provides a system in which when the owner leaves the bag, the bag issues a signal to the owner using a separate signal system before the bag emits an alarm sound, and alerts the owner. The present invention provides a system that can stop the alarm sound.

(Means for Solving the Problems) This invention means that the main signal of the main transmitter provided in the bag,
means for receiving the signal with a main receiver carried by a person, and issuing an alarm from the main receiver when the distance between the two devices increases and the level related to the reachable area of the signal falls below a predetermined level; is provided with a sub-receiver, and the main receiver is provided with a sub-oscillator, and communicates using a sub-signal system different from the main signal, and the level of the reach area of this sub-signal is the same as the main signal level. This is an alarm system for a security bag characterized by having means for emitting an alarm from a sub-receiver at a lower level.

The next invention provides crime prevention in which, in the above system, the main transmitter has a means for increasing the level of the signal reach of the main signal, and the operation of this means extends the alarm stop range in the main receiver. It is a bag alarm system.

This invention will be explained with reference to the embodiment shown in FIG.

A speaker installed in a bag is provided with a main receiver and a sub-transmitter, and a person's portable device B is provided with a main transmitter and a sub-receiver.

The radio waves from the main oscillator are then received by the main receiver, and while this received signal is within a predetermined level, the main receiver does not emit an alarm (such as a buzzer). When a certain distance away from the main oscillator of B, the reach area Lm of the predetermined signal
The main receiver will issue an alarm.

Further, the sub-transmitter of device A installed in the bag transmits radio waves to the sub-receiver of portable device B, but this sub-signal is a separate system that does not interfere with the main signal, and the III range L1 of the predetermined signal is The reach area of the main signal is made smaller than L, and the alarm is emitted from the sub-receiver at a distance.

If this bag is stolen and moves away from a person by a distance L, the main receiver emits a loud alarm. Since this alarm sound cannot be stopped by the person who takes the bag away, it alerts those around the person that the bag is stolen.

In addition, in this invention, even if you carelessly leave your bag at night when there is a risk of bag theft, the bag will send a signal to the owner using a separate sub-signal system, and before the bag emits a loud alarm sound. Then, the sub-receiver carried by the owner emits a small alarm (loud enough for only the person to open the bag) to notify the owner that if the bag is left any further away, it will make a loud noise. When this small alarm sounds, the owner returns to the bag and takes measures to prevent the alarm from emitting, such as putting the portable device in the bag. In addition, if you are unable to return halfway, you can increase the signal level of the main transmitter of your mobile device, such as increasing the power of the emitted radio waves, so that you can avoid short distances such as going to the toilet. , it is possible to prevent the alarm from emitting from the bag.

(Effects of the Invention) The wireless security bag of the present invention emits a loud alarm when the bag is taken away from the owner, which not only alerts people nearby that the bag has been stolen, but also prevents people from carelessly leaving the bag. Even if you move away from the vehicle any further, you will know that an alarm will occur, and you will be able to stop on the spot.

In addition, the secondary light receiver that alerts the owner has a completely different signal system from the main transmitter and receiver that issues the alarm from the bag.
Even if the main signal system equipment malfunctions and the bag is stolen, the newly developed reception system will immediately detect if the bag has been stolen, making it a safer and more reliable system.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating an alarm system for a security bag according to the present invention.

Claims (2)

[Claims] (1) The main signal from the main transmitter installed in the bag is received by the main receiver carried by the person, and when the distance between the two devices becomes large and the level related to the range of the signal falls below a predetermined level, the main receiver the main transmitter is provided with a sub receiver, and the main receiver is provided with a sub transmitter, and communicates by a sub signal system different from the main signal; An alarm system for a security bag, characterized in that the alarm system for a security bag comprises means for emitting an alarm from a sub-receiver when the level related to the signal reach is lower than the main signal level. (2) The security bag according to claim 1, wherein the main transmitter has means for raising the level of the signal reach range of the main signal, and the operation of this means extends the alarm stop range in the main receiver. alarm system.