JP3031465U - Wireless portable forgotten alarm - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Put the transmitter in the bag and put the receiver on the body. If you leave your bag unattended and move away from the bag, the buzzer will sound and you will be aware of what you forgot. [Composition] A transmitter is a device that amplifies a high frequency generated by a high frequency generation circuit with an amplifier and sends it as a radio wave from an antenna to a receiver. The receiver is a device that confirms the presence or absence of radio waves from the transmitter and makes a buzzer sound when the radio waves stop. First, the electric wave sent by the antenna is caught, the electric wave is detected by the receiver circuit, and the presence or absence of the detected signal is stored in the reception memory circuit. That is, whether or not the radio wave from the transmitter has arrived is stored. The stored signal is supplied to the buzzer generation circuit, and the buzzer generation circuit confirms that the detection signal has not arrived and sounds the buzzer.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The attache case, small bag, etc. are often forgotten on the go, but the present invention is a device for preventing such forgotten items. Keep the transmitter in your bag and bag and keep the receiver on yourself. If you leave your seat with your bag after a meeting or meal, you will notice that you have forgotten your bag because the radio waves from the transmitter inside the bag will not reach the receiver and the receiver will sound a buzzer. Since the strength of the radio wave from the transmitter can be changed, the distance at which the sound is emitted can also be changed. By attaching this device, you will be able to eliminate all lost items. Of course it also prevents theft.

[0002]

[Prior art]

 Conventionally, the thing attached to the attache case is only for theft prevention, and this method sounds the buzzer when lifting the attache case or connects the attache case and your wrist with a wire and the buzzer sounds when the wire separates. This is completely different from lost property prevention.

[0003]

[Problems to be solved by the device]

 At present, it seems that most of the items left behind in the second bag are left behind. Especially if you go for a drink, you will soon forget about the second bag. If a sound comes out of the bag at this time, or if a sound comes from the receiver you are wearing, you will notice that you have left it.

[0004]

[Means for Solving the Problems]

 The present invention includes a transmitter and a receiver, and when the distance between the transmitter and the receiver is large, the radio wave transmitted from the transmitter does not reach the receiver, and the receiver does not receive the radio wave. Because it is designed to be, a sound is produced. In these two devices, if the transmitter is put in the bag and the receiver is put on the belt like a pager or in the pocket, or if it is left on the body, the bag is left behind The buzzer sounds, so that you will be aware of the items you have forgotten, and there will be nothing left behind.

[0005]

[Operation] In the case of a transmitter, the high-frequency generation circuit can generate a set high frequency at regular time intervals. It consists of an amplifier and an antenna for sending the generated high frequency waves to the air as radio waves, and a battery is used as a power source for operating these. In the case of a receiver, the receiver circuit receives the radio waves sent at regular intervals and detects them. It is a circuit that stops the buzzer when the detection signal arrives, that is, a reception memory circuit. Further, the buzzer generation circuit is a circuit that always sounds the buzzer. However, when the radio wave sent from the transmitter is received, the buzzer does not sound because the reception memory circuit for stopping the buzzer is always operating. If the radio wave from the transmitter does not reach, the reception memory circuit for buzzer stop will not operate and the buzzer will continue to ring. A storage battery is used as a power supply for operating these, and an antenna for efficiently receiving radio waves is built in.

[0006]

【Example】

 Hereinafter, description will be given based on the drawings of the present invention. 1 and 2 are block diagrams showing the outline of the present invention. FIG. 3 shows an embodiment of the devised device. FIG. 1 shows a transmitter, which is a device for sending radio waves into the air. 1. High frequency generator 2. Amplifier 3. Storage battery 4. Antenna 5. Switch 6. They are called switches and are connected so that these circuits can be realized. FIG. 2 shows a receiver which receives the radio wave emitted from the transmitter shown in FIG. 1 and sounds a buzzer when the radio wave cannot be received. 7. Antenna 8. Receiver circuit 9. Reception memory circuit 10. Buzzer generation circuit 1 1. Buzzer 12. Storage battery 13. With switches, these circuits are connected so that they are valid. First, on the transmitter side, 1. 4. Make high frequency with high frequency generator You can change the frequency of this high frequency with a switch. In order to send this high frequency into the air as a radio wave, 2. With amplifier 6. 3. Increase to the output determined by the switch. The signal is sent from the antenna as radio waves to the intended receiving location at regular time intervals. Sending radio waves at regular intervals is 3. This is to extend the life of the storage battery. High frequency is generated intermittently in the high frequency generation circuit. On the receiving side, 7. 7. The radio wave sent from the transmitter by the antenna Supply to the receiver circuit, 13. It switches to the reception frequency specified by the switch, detects the received radio wave, and extracts it as a reception signal. It should be noted that this received signal is output at fixed time intervals. This signal is The signal is supplied to the receiving memory circuit, and the signal coming intermittently here is always checked and stored. This memory signal is set to 10. Supply to the buzzer generation circuit. 10. The buzzer generation circuit incorporates a circuit that sounds the buzzer at regular intervals and a circuit that resets the memory signal. The circuit that forcibly stops the buzzer when the memory signal is supplied does not sound, and when the radio wave from the transmitter is cut off, the memory signal circuit is reset and the buzzer turns off. It will continue to ring.

FIG. 3 shows an embodiment, which is 14. Put the transmitter in the bag, 15. Put the receiver on a person's body like a pager. If you leave the bag and leave the area, weak radio waves will prevent it from reaching the receiver. Then, the buzzer of the receiver sounds, and when it approaches again, the buzzer stops sounding. 14. With bag 15. Another feature is that the distance to a person can be changed from 0.5 meters to 10 meters by changing the strength of radio waves. In Fig. 3-1, the transmitter 1 and the receiver 2 are put in the bag, and if the person has the receiver 1 and the transmitter 2, the buzzer will sound even if the bag is over the set distance, The buzzer sounds for people, so the people around them also notice and forget about the lost property.

[Brief description of drawings]

FIG. 1 is an explanatory view of a transmitter of the present invention.

FIG. 2 is an explanatory view of a receiver of the present invention.

FIG. 3 is a diagram of an embodiment of the present invention.

[Explanation of symbols]

1. High frequency generation circuit This circuit is a circuit that intermittently creates high frequency that is the source of radio waves. The frequency can be changed with a switch. 2. Amplifier Circuit This circuit is 1. It is a circuit that amplifies the high frequency generated by the high frequency generation circuit and sends it out into the air. In addition,
6. You can change the reach of radio waves with a switch. 3. Storage battery 1. High frequency generator circuit, 2. It serves as a power supply for operating the amplifier circuit. 4. Antenna 2. This is for supplying the antenna with the high frequency amplified by the amplifier circuit and smoothly sending it as radio waves into the air. 5. Switch With this switch Change the high frequency generated by the high frequency generator. 6. Switch With this switch 2. It is possible to change the strength of the high frequency amplified by the amplifier circuit, that is, the distance that the radio wave reaches. 7. Antenna 4. It is for smoothly receiving the radio waves sent by the antenna. 8. Receiver circuit 7. This is a circuit that temporarily detects the radio waves received by the antenna and extracts them as signals. Here, 13. The receiving frequency can be changed with a switch. 9. Reception memory circuit 8. A memory circuit is created by the signal taken out by the receiver circuit, and the buzzer is stopped by the memory signal. Also,
8. When the signal from the receiver circuit does not come, 10. 11. By the signal generated from the buzzer generation circuit The buzzer will ring. 10. Buzzer generation circuit It is a circuit that always sounds the buzzer at regular time intervals. When the receiving memory circuit is in place, the buzzer is forcibly stopped. On the contrary, 9. If the receiving memory circuit is not working, the buzzer will continue to ring. 11. Buzzer 10. The buzzer sounds when a signal from the buzzer generation circuit arrives. 12. Storage battery 8. Receiver circuit 9. Reception storage circuit 10. Buzzer generation circuit 11. It is a storage battery that serves as a power source for operating the buzzer. 13. Switch A switch for changing the reception frequency.

Claims (1)

[Scope of utility model registration request] 1. The apparatus comprises a transmitter and a receiver. The transmitter is composed of a high frequency generation circuit, an amplifier, an antenna, a storage battery and a switch.
It is possible to generate a high frequency that is set at regular time intervals. It is composed of an amplifier for sending the generated high frequency waves to the air as radio waves, an antenna for sending the amplified high frequency waves to the air as radio waves, and a storage battery for operating these. In addition, the receiver has a receiver that constantly receives radio waves from the receiver, a circuit that stores the received radio waves and stops the buzzer, that is, a reception storage circuit, and a buzzer generation circuit that emits sound when reception becomes impossible. , And a storage battery for operating these. A device that sounds a buzzer (electronic sound) built in the receiver when the two transmitters and the receiver are separated by a certain distance and the radio wave emitted from the transmitter does not reach the receiver. is there.