JPH02165733A - Intermittent reception system for radio equipment - Google Patents

Abstract

PURPOSE:To save energy by limiting a part where intermittent reception is performed to a place where the presence/absence of a radio wave is judged at the part where a frequency for control is received, and disconnecting a power source for another part. CONSTITUTION:It is checked whether or not its own station is called by detecting the presence/absence of the radio wave for control by connecting/ disconnecting the power source for the part to detect the presence/absence of the radio wave in a receiver intermittently, connecting the whole of the power sources of the receiver when the radio wave for control is present, and decoding a various kinds of control commands sent on the radio wave for control. At this time, when it is judged that a call is not the one for its own station, the power source of the receiver is disconnected. When it is the one for its own station, the power sources for a transmitter and the receiver are connected successively until a signal representing the completion of communication is inputted, and transmission and reception are performed by radio wave for data. When the signal representing the completion of the communication is inputted, switches SR and ST are disconnected. In such a way, energy saving can be realized.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides power to a radio device for data communication that uses a frequency for control and a frequency for data transmission using a battery, solar battery, etc. This relates to one type of energy saving device.

<Prior art> An energy-saving method using intermittent reception is disclosed in Patent Application No. 62-20.
4832, but since the wireless system has been changed this time, it is necessary to incorporate technology related to this.

<Problems to be Solved by the Invention> The present invention incorporates an energy saving method in a radio device for data transmission in which the frequency for control and the frequency for data transmission are separate.

<Means to solve the problem> Save energy by limiting the part that performs intermittent reception to the part that receives the control frequency and also to the part that determines the presence or absence of radio waves, and by turning off the power to other parts. Measure.

<Example> FIG. 1 is a flowchart for explaining the present invention in detail.

FIG. 2 is a block diagram for explaining the invention in detail.

Since the power source for the transmitter 2 and receiver 2 in FIG. 2 is a storage battery E charged by a solar cell, it is necessary to save energy.

The transmitter and receiver can transmit and receive on the control frequency and data frequency respectively, calling the other party on the control frequency and using the data frequency.

Send data.

The transmitter 2 is powered on and off by a relay ST, and the receiver 2 is powered by a relay SR. This switch is often a semiconductor switch.

The flowchart in FIG. 1 describes the operations of the receiver 2, transmitter 2, and switches SR and ST.

The flowchart shown in FIG. 1 will be explained below.

Turn the power to the part of the receiver that detects the presence or absence of radio waves to 0.
It detects the presence or absence of control radio waves by turning on and off intermittently, such as on for 1 second and off for 20 seconds.

Here, if transmitter 1 in Fig. 2 transmits control radio waves at 20
If the transmission continues for more than a second, the flowchart in Figure 1 enters the next step, and in the case of control radio waves, the entire power source of the receiver is used as a human to decipher the various control commands sent by the control radio waves. and check whether your station is being called.

The flowchart now goes to the next step, and when it is determined that the station is not the own station, the power of the receiver is turned off.

In the case of the own station, the transmitter and receiver are powered on continuously until a communication end signal is received, and data radio waves are used to
Send and receive.

When the signal indicating the end of communication is received, switches SR and ST are turned off.

<Effect of the invention> If the power is turned on for 0.1 seconds and turned off for 20 seconds.

The average power consumption of the receiver can be reduced by a factor of 200. Further, even when using control radio waves and data radio waves, the one-bokuto type can be used.

[Brief explanation of the drawing]

FIG. 1 is a flowchart for explaining the present invention in detail, and the receiver 2 shown in FIG. Transmitter 2° switch SR,
This is for explaining the operation of ST. FIG. 2 is a block diagram for explaining the present invention in detail. The explanation of the symbols is as follows: SR...Switch ST...Switch E...Storage battery Figure 1 Figure 2 Procedural Amendment April 19, 1989

Claims (6)

[Claims] (1) There must be a transmitter/receiver that calls the other station using a radio frequency for control and sends and receives data using a radio frequency for data. (2) Both the transmitter and receiver should be turned off at all times, and only the receiver should be turned on momentarily intermittently to detect the presence or absence of radio waves at the control frequency. (3) If a control frequency radio wave is detected, then turn on the receiver and determine whether or not the own station is being called. (4) As a result of the determination, turn off the power when your own station is not being called, and turn on the power to the transmitter and receiver when your own station is being called. (5) Sending and receiving data using radio waves at data frequencies, and when finished, sends a termination signal, thereby turning off the power to the transmitter and receiver. (6) Change the receiver power on/off time depending on conditions such as battery charging status, season, accidents, time setting, etc. The above is an intermittent reception method for radio equipment that uses six items at the same time.