JPS63145151A - Wireless remote control system - Google Patents

Abstract

PURPOSE:To improve safety by installing a transmission intensity selecting means onto the transmitter side of a wireless remote control device and reducing the transmission output in the case when a trunk opener, door lock, etc. are operated and permitting the remote control operation only in case of the operation in a short distance. CONSTITUTION:A wireless remote control system is constituted of a transmitter 2 and a receiver 3 mounted onto a car. When a prescribed operation instruction is input from the keyswitch 4 of the transmitter 2, an encoder 5 transmits said input into an oscillation and modulation circuit 7, and electric waves are transmitted through an output transistor 9. When the operation instruction is particularly for a trunk opener, door lock, etc., the encoder 5 switches a selecting switch 10, and reduces the transmission output. The transmission output for the trunk opener, door lock, etc. is reduced, and only the operation in a short distance is permitted, and the safety in remote control operation is achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a wireless remote control system, and more particularly, to a wireless remote control system that can reduce power consumption of a transmitter and improve operational safety.・Regarding the system.

Conventional wireless remote control systems generally consist of a transmitter that sends command signals using radio waves, infrared rays, ultrasonic waves, etc., and a receiver that receives the radio waves, extracts the command signal, and outputs the operating signal to the operating device. It is configured.

One specific example is an automobile's wireless remote control system, which sends command signals from a portable transmitter to control the vehicle's headlights, horn, trunk opener, door locks, and other accessories. It is a system that operates.

Since it is desirable to be able to operate the headlights and horn from a certain distance from the car (for example, about 10 meters), the transmitter is set to have the necessary transmission output.

Problems with the Prior Art In the case of the wireless remote control system for automobiles mentioned above, the transmitter is portable;
It is battery powered.

However, since the output of the transmitter is relatively large so that the equipment can be operated even if the device is a certain distance from the vehicle, the problem is that the battery wears out quickly and the battery must be replaced frequently. be.

Additionally, trunk openers and door locks are normally activated when someone is in the vicinity of the trunk or door, and there is no need to activate them from a distance from the car. Since it was not distinguished from the headlights and horn, which need to be activated from the start, the transmission output was unnecessarily large, leading to unnecessary power consumption.

Furthermore, if the operator makes a mistake, he or she may open the trunk of the vehicle or unlock the doors even when the person is away from the vehicle, creating a risk of theft.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a wireless remote control system that can reduce power consumption in a transmitter and improve operational safety.

Composition of the Invention The wireless remote control system of the present invention includes a transmitter that transmits command signals for a plurality of actuating devices using radio waves, etc., and a transmitter that receives the radio waves, extracts command signals, and outputs operating signals to each actuating device. The wireless remote control system is characterized in that the transmitter side is provided with a transmission strength switching means for switching the transmission strength according to the type of the target actuating device. be.

Function: The transmission intensity switching means provided on the transmitter side of the wireless remote control system of the present invention is as follows:
The transmission strength of the command signal is switched and changed depending on the type of target actuating device.

For example, wireless remote control of automobiles
In the case of a system, if the target device is a headlight or a horn, the transmission output is made relatively large, whereas if the target device is a trunk opener or a door lock, the transmission output is made relatively small.

In other words, switching is performed so that an actuating device that needs to be activated even from a long distance is set to a relatively high transmission intensity, and an actuating device that is only activated at a short distance is set to a relatively low transmission intensity.

This prevents the transmission intensity from becoming unnecessarily large,
Power consumption is suppressed to the necessary minimum. Therefore, the life of the transmitter battery can be extended.

Furthermore, even if you accidentally release the trunk opener or door lock when you are far away, the receiver will not respond, so the trunk or door will not open, improving safety.

EXAMPLES Hereinafter, the present invention will be explained in more detail based on examples shown in the drawings. However, the present invention is not limited to this example.

FIG. 1 is a conceptual diagram of a wireless remote control system 1 for an automobile according to an embodiment of the present invention.

This wireless remote control system 1 consists of a transmitter 2 that can be carried and a receiver 3 that can be mounted on a car.

The key switch 4 of the transmitter 2, for example, a headlight on/off command, a bone on/off command,
Trunk opener activation command (trunk opening command),
When a door lock operation command (command to unlock the door) is input, the encoder 5 gives a command signal corresponding to the input to the oscillation/modulation circuit 7, which causes the output transistor 9 to output a radio wave containing the command signal. radiate through the antenna. The transmic 2 is powered by a battery 11.

What should be noted here is that the encoder 5 is configured to control the current (2) supplied to the output transistor 9 by switching the changeover switch 10. That is,
When the device to be commanded is a headlight or a horn, the encoder 5 switches the changeover switch 10 to the solid line side so that a relatively large current can be supplied to the output transistor 9. On the other hand, if the device targeted by the command is a trunk opener or a door lock, the encoder 5 switches the changeover switch 10 to the side shown by the broken line, and the resistor 8 limits the current I supplied to the output transistor 9. As a result,
A command signal for the headlight horn is transmitted using relatively large power, and a command signal for the trunk opener and door lock is transmitted using relatively small power.

On the other hand, the receiver 3 receives radio waves from the transmitter 2 via an antenna with a receiver 12, extracts a command signal with a decoder 13, and adjusts the headlight direction according to the content of the command signal.
, horn H, trunk opener T, and door lock D.

As for the headlights and the horn H, the output of the transmitter 2 is relatively large, so they can be conveniently operated even when the vehicle is far away.

However, the output of the trunk opener T and door lock D is relatively small, so they cannot be activated at a distance from the car, preventing the trunk or door from opening if operated by mistake. safety is improved. On the other hand, in the vicinity of a car, even if the transmission output is relatively small, the signal is sufficiently received, so there is no problem in operating the trunk opener T and door lock D.

In addition, since transmitter 2 does not transmit data using unnecessary large amounts of power, power consumption is reduced accordingly.
The life of the battery 11 becomes longer.

Another example is an infrared or ultrasonic transmitter provided with a transmission intensity switching means.

Effects of the Invention According to the present invention, the present invention includes a transmitter that transmits command signals for a plurality of actuating devices using radio waves, etc., and a receiver that receives the radio waves, extracts command signals, and outputs the operating signals to each actuating device. A wireless remote control system is provided in which the transmitter side is provided with a transmission strength switching means for switching the transmission strength according to the type of the target actuating device. This prevents the command signal from being transmitted with an unnecessarily high transmission intensity, thereby reducing power consumption accordingly. Further, since an actuating device that should be activated only at a short distance cannot be activated from a long distance, the safety of operation is improved.

[Brief explanation of the drawing]

FIG. 1 is a conceptual diagram of a wireless remote control system according to an embodiment of the present invention. (Explanation of symbols) l...Wireless remote control system 2...Transmitter 3...Receiver 4...
・Key inch 5...Encoder 8...Resistor 9...Output transistor 0...
・Selector switch 11...Battery 12...Receiver
13...Decoder L...Headlight
H...Horn T...Trunk opener D.
・Door lock.

Claims (2)

[Claims] 1. A wireless remote control system comprising a transmitter that transmits command signals for multiple actuating devices using radio waves, etc., and a receiver that receives the radio waves, extracts command signals, and outputs operating signals to each actuating device. A wireless remote control system characterized in that the transmitter side is provided with a transmission strength switching means for switching the transmission strength according to the type of the target actuating device. 2. The wireless remote control system according to claim 1, which is used to control the operation of automobile accessories such as headlights, horns, trunk openers, and door locks.