JPH04312026A - Radio transmitter-receiver - Google Patents

Abstract

PURPOSE:To automatically set the strength of a transmitted radio wave optimum by a controller by adding a transmission output change request signal to a transmission signal. CONSTITUTION:A received radio wave detecting part 2 detects the strength of the received radio wave from the output of a receiving part 1. This level detection signal is inputted to a fuzzy controller part 3. An output change request detecting part 4 detects the transmission output change request signal in the received radio wave from the output of the receiving part 1. The detecting part 4 detects the contents of this signal, and inputs the contents of this signal to the fuzzy controller part 3. The control signal for transmission of the defined output of the controller part 3 is inputted to a transmission level control part 5 and a transmission output change request addition circuit 6. The control part 5 forms a transmission output level control signal at a transmitting part 7. Besides, the circuit 6 forms the transmission output change request signal to an opposite party side, and outputs it to the transmitting part 7. The transmitting part 7 controls transmission output in accordance with the contents of these control signals.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio transmitting/receiving device applicable to a handy type transceiver.

0002

2. Description of the Related Art Some conventional wireless transmitting and receiving devices are equipped with a manual switch to adjust the strength of transmitted radio waves. Normally, as shown in FIG. 4, when the distance between two transmitting/receiving devices is short, the radio waves sent from each transmitting/receiving device to the other party are weakened to prevent howling or the like from occurring. Further, as shown in FIG. 5, when the distance between the wireless transmitting and receiving devices is long, the output of the transmitted radio wave is strengthened. Conventionally, the user had to manually set the output of these radio waves.

0003

However, the above-described transmitting/receiving device is complicated in that the user must constantly judge the transmitting/receiving status while operating the manual switch. In other words, manual operations such as weakening the radio waves as you get closer to the other party and strengthening them as you move away from the other party, or, if the wireless transmitter/receiver is a transceiver, strengthen the radio waves if it is difficult to hear the other party's voice and weaken them if feedback occurs. becomes necessary.

An object of the present invention is to provide a wireless transmitting/receiving device in which a controller can automatically optimally set the strength of transmitted radio waves by adding a transmission power change request signal to a transmitted signal. .

[0005]

[Means for Solving the Problems] The present invention provides a receiving section that receives radio waves and processes the received signals, a received radio wave level detection section that detects the strength of the received radio waves, and a transmission output change in the received radio waves. an output change request signal detection unit that detects the request signal;
the strength of the received radio waves detected by the received radio wave level detection section;
and a controller unit that forms a transmission control signal based on the transmission output change request signal detected by the output change request signal detection unit, and a controller unit that generates a transmission output level control signal based on the transmission control signal output from the controller unit. a transmission level control unit for forming a transmission level control unit, and a transmission output change request signal forming circuit for forming a transmission output change request signal to the other party based on the transmission control signal output from the controller unit;
A transmitting unit that adds and modulates a transmission output change request signal formed by the transmission output change request signal forming circuit to a transmission signal, and transmits radio waves in accordance with the transmission output level control signal. shall be.

[0006] Furthermore, the controller section is characterized in that it is comprised of a fuzzy controller section that performs fuzzy inference.

[0007]

[Operation] In the present invention, an output change request signal is added to the transmitted and received signals. The controller unit forms a transmission control signal based on this output change request signal and the strength of the received radio wave, controls the transmission output level based on this transmission control signal, and sends the transmission output change request signal to the other party. Form. The controller unit forms a transmission control signal including a transmission output change request signal for the other party to increase the transmission output when the received radio waves are weak, and for the other party to decrease the transmission output when the received radio waves are strong. , when receiving a signal requesting an increase in the transmitting power from the other party, the transmitter increases the transmitting power, and when receiving a signal requesting a decrease in the transmitting power, forms a control signal for decreasing the transmitting power. The optimum transmission output is automatically maintained by such operation of the controller section.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a block diagram of an embodiment of the invention.

[0009] The receiving section 1 includes a circuit that receives radio waves and processes the received signals. Here, for example, if the wireless transmitting/receiving device is a transceiver, it includes a part that demodulates received radio waves and converts them into audio signals, a speaker, and the like. The received radio wave level detector 2 detects the strength of the received radio waves from the output of the receiver 1. The level detection signal is input to the fuzzy controller section 3. The output change request signal detector 4 detects a transmission output change request signal in the received radio waves from the output of the receiver 1. In this wireless transmission/reception system, a transmission power change request signal is added to the transmission/reception signal. The transmission power change request signal is added to the beginning of the transmission/reception signal. The output change request signal detection section 4 detects the content of this signal and inputs the content of the signal to the fuzzy controller section 3. The fuzzy controller section 3 forms a transmission control signal by fuzzy inference based on the received radio wave level detection signal and the output change request signal. FIG. 2 shows a group of rules used in the fuzzy controller section 3. Also, Figure 3
indicates membership functions used in the antecedent and consequent parts of each rule shown in FIG. 2. Same figure (A),
(B) is the membership function of the antecedent part, (C), (D)
is the membership function of the consequent.

The transmission control signal, which is the definitive output of the fuzzy controller section 3, is input to a transmission level control section 5 and a transmission output change request signal addition circuit 6. The transmission level control section 5 forms a transmission output level control signal for the transmission section 7 based on the transmission control signal. Further, the transmission output change request signal adding circuit 6 forms a transmission output change request signal to the other party based on the transmission control signal, and outputs it to the transmitter 7. If the transmission control signal output from the fuzzy controller section 3 does not change the transmission output level, the transmission output change request signal addition circuit 6 transmits a signal indicating that the transmission output change request signal will not be added. It is output to section 7. The transmission output change request signal includes multiple types of signals such as a transmission output reduction request signal and a transmission output improvement request signal, and is based on the transmission control signal output from the fuzzy controller section 3. The contents of these signals are determined and input to the transmitter 7.

The transmitting section 7 is a transmitting signal processing circuit, for example, in the case of a transceiver, modulates a carrier wave with an audio signal,
It includes a circuit that transmits this modulated signal, adds the transmission output change request signal to this transmission signal, and outputs the signal to the antenna circuit. Further, the transmission output of the transmitter 7 is controlled by the transmission output level control signal. The transmission output level control signal includes a plurality of types of control signals, such as a control signal that increases the transmission output level, a control signal that decreases the transmission output level, and a control signal that does not change the transmission output level. Transmission section 7
controls the transmission output according to the contents of these control signals.

With the above configuration, as is clear from the rules of FIG. 2 and the membership functions of FIG. 3, it is possible to transmit and receive with the optimum radio wave strength depending on the distance to the other party's wireless transmitting/receiving device. That is, if the distance is close, the radio waves are automatically set to weak so that there is no howling, and when the distance is large, for example, in the case of a transceiver, the radio waves are controlled to output strong so that the sound is not buried in noise.

[0013] In this embodiment, a fuzzy controller based on fuzzy inference was used as the controller.
It is also possible to configure it with other inference sections or condition judgment sections.

[0014]

[Effects of the Invention] Since the optimum radio wave strength is automatically set for the distance, it is possible to eliminate the user's complication. Also, when using the device in close proximity, it automatically sets to weaker radio waves, which saves power.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a wireless transmitter/receiver according to an embodiment of the present invention.

[Figure 2] Diagram showing the rules used in the fuzzy controller section

[Figure 3] Diagram showing membership functions used in the fuzzy controller section

[Figure 4] Diagram showing radio wave conditions when the distance between wireless transmitting and receiving devices is short

[Figure 5] Diagram showing the radio wave condition when the distance between wireless transmitting and receiving devices is long

[Explanation of symbols]

1-Receiving section 2-Received radio wave level detection section 3- Fuzzy controller part 4-Output change request signal detection section 5-Transmission level control section 6-Transmission output change request signal addition circuit 7- Transmitter

Claims (2)

[Claims] 1. A receiving section that receives radio waves and processes the received signal, a received radio wave level detection section that detects the strength of the received radio waves, and an output change request that detects a transmission output change request signal in the received radio waves. a signal detection section; a controller section that forms a transmission control signal based on the strength of the received radio wave detected by the received radio wave level detection section and the transmission output change request signal detected by the output change request signal detection section; a transmission level control section that forms a transmission output level control signal based on the transmission control signal output from the controller section; and a transmission output change request to the other party based on the transmission control signal output from the controller section. A transmission output change request signal forming circuit that forms a signal; and a transmission output change request signal formed by the transmission output change request signal forming circuit is added to a transmission signal and modulated, and radio waves are transmitted according to the transmission output level control signal. A wireless transmitting/receiving device comprising: a transmitting section for transmitting data. 2. The wireless transmitting/receiving device according to claim 1, wherein the controller section is a fuzzy controller section that performs fuzzy inference.