JPH03209597A - Wireless transmission control system - Google Patents

Abstract

PURPOSE:To shorten time for transmitting wireless signals by discriminating the coincidence of a tone signal frequency by a frequency variable filter on a wireless reception side by transmitting one tone signal out of the tone signals of a lot of frequencies corresponding to a lot of ID codes on a wireless transmitter side. CONSTITUTION:The ID code is transmitted by the tone signal and a lot of ID codes are set by a ID code set part 11 on the wireless transmitter side. Then, a lot of tone signal frequencies corresponding to these ID codes are generated by a tone signal generating circuit 12. Therefore, only by selecting one tone signal frequency out of these tone signals and transmitting it, this tone signal frequency is identified by the frequency variable filter on the wireless receiver side and the coincidence of the ID code can be discriminated. Thus, the transmission time can be shortened and further since it is enough only to provide one frequency variable filter 21 on the wireless receiver side, configuration is simplified.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a wireless transmission control system, and more specifically, is characterized in that ID codes and control data are identified by tone signals. in between.

[Prior Art] This type of wireless transmission control system outputs a wireless signal with a unique ID code attached to control data etc. from the wireless transmitter side, and receives and decodes this wireless signal at the wireless receiver side. , which controls a controlled object according to control data, and is used in wireless security systems, wireless service call systems, etc.

FIG. 4 shows an example of the internal configuration of a wireless transmitter 100 used in such a system.
It is mainly configured with a signal processing circuit 101 consisting of U. The terminals TO to T2 of this signal processing circuit 101 are connected to operation switches SWI to SW3 for performing different controls.
is connected, and the terminal DATA outputs a transmission signal to the wireless transmission section 102, and the wireless transmission section 102 modulates a high frequency carrier wave with this transmission signal and transmits it to the antenna A.
The NT outputs a radio signal as a radio wave signal.

Further, an ID code setting unit 103 is connected to terminals HO to H19 of the signal processing circuit 101 for setting an ID code unique to the transmitter 100 by selectively connecting a conductive chip 103a to a conductive line. ing. Furthermore, 1
04 is a ceramic resonator for oscillating a reference clock signal of the signal processing circuit 101.

FIG. 4A shows the format of one frame of a wireless signal output from such a wireless transmitter 100, in which a 1-bit transmission start signal 7p is followed by an ID code setting field 20 set by 03. Bit ID
The code is first outputted, and then a 1-hit parity check signal is outputted following 3-bit control data corresponding to the operated operation switches SWi to SW3. ing. The wireless receiver (not shown) receives this wireless signal, determines whether the ID code matches, and then performs control according to the control data, so it outputs a wireless signal with the same frequency. Even when two systems are installed adjacent to each other, the ID coat prevents other systems' wireless transmitters from malfunctioning, improving system reliability.

By the way, in such a system, in order to allocate a large number of ID codes to a wireless transmitter, it is necessary to sequentially transmit a large number of bits of the ID code using a modulation signal corresponding to a binary code consisting of 1 and 0. If the transmission speed of each bit is increased (shortened transmission time) in order to shorten the time, normal demodulation will not occur due to limitations in the response characteristics of the internal circuits of the transmitter 100 and receiver, resulting in lower reception sensitivity. I will do it. Conversely, if the transmission speed of each bit is lowered (transmission time is increased) to ensure sufficient reception sensitivity, the time to transmit one frame of wireless signal increases because a large number of bits must be transmitted. This increases the response time from when an operation is performed on the wireless transmitter side until the corresponding control is performed on the wireless receiver side, so improvements have been desired.

[Problems to be Solved by the Invention] The present invention, proposed in view of the above circumstances, transmits wireless signals as tone signals instead of as binary signals, thereby eliminating the need to reduce receiving sensitivity. Moreover, the present invention aims to provide a wireless transmission control system that can increase the transmission speed.

[Means for Solving the Problems] The present invention according to claim 1, proposed to achieve the above object, provides an ID code for a wireless transmitter of a wireless transmission control system to set a unique ID code. A setting unit, at least one operation switch for performing a control operation, and a timing that is activated when any of these operation switches is operated and outputs a timing pulse at each predetermined period. A transmitting circuit section comprising a pulse generating circuit, a modulating circuit that modulates a high frequency carrier wave with a tone signal, and a transmitting circuit that amplifies and transmits the modulated wave output from the modulating circuit, and one of the above operation switches is operated. During the period from when the timing pulse generation circuit is activated to when the timing pulse is input, a start tone signal is generated and output to the transmission circuit, and after this, the timing pulse generation circuit generates a start tone signal and outputs it to the transmission circuit. During the period until receiving the pulse, the ID code setting section generates a tone signal corresponding to the ID code and outputs it to the transmitting circuit section, and then outputs a data tone signal for a predetermined period of time. and a tone signal generating circuit that generates a tone signal and outputs it to the transmitting circuit section, and the wireless receiver is configured with a front end section that receives the wireless signal output from the wireless transmitter and demodulates the tone signal. a frequency variable filter that allows only a tone signal of a certain frequency to pass; a timing pulse generation circuit that is activated by the activation signal and outputs a timing pulse having the same period as the timing pulse generation circuit of the wireless transmitter; and the wireless transmitter. An ID code setting section for setting an ID code that is the same as the ID code set on the side, and an ID code setting section for setting an ID code that is the same as the ID code set on the side, and the above wireless transmission during reception standby and a period from when the timing pulse generation circuit is activated until the timing pulse is input. A frequency setting signal for passing the start tone signal transmitted from the device side is generated and output to the frequency variable filter, while the period until receiving the next timing pulse output from the timing pulse generation circuit is as described above. A frequency setting signal for passing the tone signal corresponding to the ID code set in the ID code setting section is generated and outputted to the frequency variable filter, and then a timing pulse output from the timing pulse generation circuit is generated. a frequency setting signal generation circuit that sequentially varies and generates the frequency setting signal to a predetermined value for each period until receiving the frequency setting signal, and outputs the generated signal to the variable frequency filter;
When the start tone signal is received through the frequency variable filter, a start signal is output to the timing pulse generation circuit, and then, after receiving the tone signal corresponding to the ID code through the frequency variable filter, , a tone signal processing circuit that outputs the data tone signal inputted through the variable frequency filter as it is, and a tone decoder circuit that receives and decodes the data tone signal output from the tone signal processing circuit and outputs a control signal. It is said to be configured with the following.

Further, in the present invention according to claim 2, the wireless receiver has a control mode in which control is performed in accordance with a data tone signal transmitted from the wireless transmitter side instead of the ID code setting section; A mode switching means for switching and setting a registration mode for registering an ID code corresponding to a tone signal transmitted from the transmitter side, and when the mode switching means switches and sets the registration mode, the above-mentioned Directly receives a tone signal corresponding to the ID code transmitted from the transmitter side via the front end section, converts the tone signal into a corresponding ID code, and then registers it, while controlling by the mode switching means. When the ID code is switched to the mode, the ID code outputs the registered ID code to the frequency setting signal generation circuit and sets the passing frequency of the variable frequency filter to the frequency of the tone signal corresponding to the registered ID code. [Function] In the present invention as set forth in claim 1, when any operation switch of the wireless transmitter is operated, the timing pulse generation circuit is activated. Then, a timing pulse is output at every predetermined period. On the other hand, the tone signal generation circuit generates a start tone signal of a predetermined frequency and outputs it to the transmission circuit during the period from when the operation switch is operated until the timing pulse is input from the timing pulse generation circuit. After that, during the period until the next timing pulse is applied from the timing pulse generation circuit to the tone signal generation circuit, a tone signal of a predetermined frequency is transmitted as a tone signal according to the ID code set in the ID code setting section. The tone signal generating circuit generates a data tone signal and outputs it to the transmitting circuit, and then for a predetermined period of time, the tone signal generating circuit generates a data tone signal of a predetermined frequency corresponding to the operated operation switch. It is generated and output to the transmitting circuit section. The transmitting circuit section sequentially receives a start tone signal, a tone signal corresponding to the ID code, and a data tone signal output from the tone signal generation circuit, and modulates the high frequency carrier wave with a modulation circuit.
The modulated high-frequency carrier wave is amplified by a transmitting circuit, and a wireless signal is transmitted from a transmitting antenna.

On the other hand, a wireless receiver receives and demodulates a wireless signal output from a wireless transmitter using a front end section.

First, when the start tone signal is received, demodulated, and output to the variable frequency filter, a frequency setting signal is added from the frequency setting signal generation circuit to the variable frequency filter to pass the start tone signal, so the front end section The start tone signal output from the start tone signal passes through a variable frequency filter and is transmitted to the tone signal generation circuit.
- In response to the on signal, a start signal is output to the timing pulse generation circuit to start it.

During the period from when the timing pulse generation circuit starts up and outputs a timing pulse to the frequency setting signal generation circuit until outputting the next timing pulse, the frequency setting signal generation circuit uses the ID code set in the ID code setting section. Then, a frequency setting signal for passing a tone signal of a frequency corresponding to this ID code is output to a variable frequency filter. Meanwhile, during this period, a tone signal of a frequency corresponding to the ID code is transmitted from a wireless transmitter. is being sent, so the ID received and demodulated by the front end
When the tone signal corresponding to the coat matches the passing frequency of the variable frequency filter, the tone signal output from the front end section passes through the variable frequency filter as it is and is applied to the tone signal processing circuit.

Thereafter, during each period until a timing pulse is applied from the timing pulse generation circuit to the frequency setting signal generation circuit, a frequency setting signal generated by sequentially varying a predetermined value from the frequency setting signal generation circuit is added. On the other hand, during each of these periods, the data tone signal is continuously transmitted from the wireless transmitter, so the data tone signal received and demodulated by the front end section matches the passing frequency of the variable frequency filter. Only then is the data tone signal passed through the variable frequency filter and transmitted to the tone signal processing circuit.

Then, the tone signal processing circuit outputs the data tone signal to the tone decoder only when a tone signal corresponding to the ID code is transmitted before the data tone signal is transmitted, and the tone decoder circuit outputs the data tone signal to the tone decoder. Receives and decodes signals and performs necessary control on the controlled object.

However, if the tone signal processing circuit does not receive a tone signal corresponding to the ID code before receiving the data tone signal, no control is performed because the data tone signal is not output to the tone decoder circuit.

In the present invention as set forth in claim 2, the operation of the wireless transmitter is the same as that described in claim 1. On the other hand, when the wireless receiver is set to the registration mode by the mode switching means, the operation from the time when a wireless signal is input from the wireless transmitter that registers the ID code until the timing pulse generation circuit is activated is covered by the claims. This is similar to the case of the wireless receiver No. 1.

During the period from when a timing pulse is input from the timing pulse generation circuit to the ID code registration means until when the next timing pulse is input, a tone signal corresponding to the ID code is output from the wireless transmitter.
This tone signal is received by the front end section, demodulated, and directly added to the ID code registration means, which converts this tone signal into a corresponding ID code and then registers it.

Further, when the wireless receiver is switched to the control mode by the mode switching means, the operation from receiving the wireless signal transmitted from the wireless transmitter to activating the timing pulse generation circuit is defined in claim 1. The same is true for the wireless receiver described.

During the period from when a timing pulse is input from the timing pulse generation circuit to the ID code registration means until when the next timing pulse is input, the ID code registered in the ID code registration means is output to the frequency setting signal generation circuit. , the frequency setting signal generation circuit adds a frequency setting signal to the frequency variable filter to pass the tone signal of the frequency corresponding to this ID code.
During this period, a tone signal corresponding to the ID code is output from the wireless transmitter, so if the frequency of the tone signal demodulated by the front end unit and the passing frequency of the variable frequency filter match, the ID code is output. A tone signal corresponding to the coat passes through a variable frequency filter and is transmitted to a tone signal processing circuit. After this, control is performed by the same operation as the wireless receiver described in claim 1.

[Example] The present invention will be described in detail below with reference to the drawings.

FIG. 1 is a block diagram showing the internal configuration of a wireless transmitter l used in the system of the present invention according to claim 1. In the figure, 10a-1On corresponds to each control operation. Operation switch provided, 11
13 is an ID code setting section for setting an ID code unique to the wireless transmitter 1, and 13 is an operation switch 10a to Io.
a timing pulse generation circuit that is activated when any one of n is operated and outputs a timing pulse at every predetermined cycle T; 14 is a modulation circuit 14a that modulates a high frequency carrier wave with a tone signal; A transmission circuit section 12 includes a transmission circuit 14b that amplifies and transmits a modulated wave output from the modulation circuit 14a, and a timing pulse is input from the timing pulse generation circuit 13 after any of the operation switches 10a to Ion is operated. During the period until the start tone signal of a predetermined frequency fO is generated and output to the transmitting circuit section 14, the ID code is generated during the period until receiving the timing pulse output from the timing pulse generation circuit 13. The setting section 11 generates a tone signal with a frequency fx corresponding to the predetermined ID code and outputs it to the transmitting circuit section 14, and then continues for a predetermined period of time (in this embodiment, the timing pulse is set to 0). A tone signal generation circuit that generates a data tone signal of a predetermined frequency (fl to fn) corresponding to the operated operation switch 10a (set to nXT) and outputs it to the transmission circuit section 14. It is.

The operation of the wireless transmitter I having such a configuration will be explained with reference to the timing chart of FIG. 1A. When the operation switch 10a of the wireless transmitter l is operated, the timing pulse generation circuit 13 is activated (see FIG. 1A (a)), and the timing pulse generation circuit 13 sends a timing pulse to the tone signal generation circuit 12 at a predetermined period TN. output (see FIG. 1A (b)). On the other hand, the tone signal generation circuit 12 generates a start tone signal of frequency fO during the period T from when the operation switch 10a is operated until the timing pulse is input from the timing pulse generation circuit 3 to the transmission circuit. After that, the timing pulse generation circuit 13 outputs the signal to the tone signal generation circuit 12.
The period T until the second timing pulse is applied is:
The tone signal generation circuit 12 generates a tone signal with a frequency fx corresponding to the ID code set by the ID code setting section 11, outputs it to the transmission circuit section 14, and then outputs it to the transmission circuit section 14 for a predetermined period of time (nXT). For a while, operation switch 1
A data tone signal having a frequency corresponding to 0a (for example, frequency f3) is generated by the tone signal generating circuit 13 and outputted to the transmitting circuit section 14 (see FIG. 1A (C)). In the transmitting circuit section 14, the modulation circuit 14a sequentially receives the start tone signal of frequency fO output from the tone signal generation circuit 12, the tone signal of frequency fx corresponding to the ID code, and the data tone signal of frequency f3, and generates a high frequency carrier wave. is modulated, high-frequency amplification is performed by the transmitting circuit 14b, and a wireless signal is transmitted from the transmitting antenna ANT. In this way, a wireless signal in the form of a radio wave signal is output from the wireless transmitter l, and this wireless signal is received by the wireless receiver.

FIG. 2 is a block diagram showing the internal configuration of the wireless receiver 2 used in the system of the present invention.
In the figure, ANT is a receiving antenna that receives the wireless signal transmitted from the wireless transmitter 1, 20 is a front end section that receives the wireless signal received by the receiving antenna ANT and demodulates the tone signal, and 21 is a frequency setting signal. a frequency variable filter that passes only a tone signal of a set frequency; 24 is a timing pulse generation circuit that is activated by an activation signal and outputs a timing pulse every 1IJIT, which is the same as the timing pulse generation circuit 13 of the wireless transmitter 1; 26 is an ID code setting section for setting the same ID code as the ID code set on the wireless transmitter 1 side. 22 is a frequency setting signal for passing the start tone signal of frequency fO transmitted from the wireless transmitter 1 side while waiting for reception and a period T from when the timing pulse generation circuit 24 is activated until the timing pulse is output. is generated and outputted to the variable frequency filter 21, and the period T until receiving the device's timing pulse constituted by the timing pulse generation circuit 24 is the frequency corresponding to the ID code set in the ID code setting section 26. A frequency step fixed signal for passing the fx tone signal is generated and outputted to the frequency variable filter 21, and the frequency is changed for each interval T until the timing pulse is successively outputted from the timing pulse generation circuit 24. The variable frequency filter 2 is generated by sequentially varying the setting signal to a predetermined value.
This is a frequency setting signal generation circuit that outputs the frequency setting signal to the timing pulse generator 24, and in this embodiment, the frequency setting signal generator outputs the frequency setting signal to the timing pulse generator
After receiving the timing pulse, a frequency setting signal is outputted so that the passing frequencies of the frequency variable filter 21 are in order: fl, f2...fn every time a timing pulse is received, and a tone signal of frequency fn is output. After outputting the frequency setting signal for passing the frequency fo, it returns to the frequency setting signal for passing the frequency fo and returns to the reception standby state again. Further, when the start tone signal 23 receives the start tone signal of the frequency fO through the variable frequency filter 21, it outputs a start signal to the timing pulse generation circuit 24, and then outputs a start signal to the timing pulse generating circuit 24, and then outputs the start tone signal to the timing pulse generating circuit 24, which then outputs a start tone signal of the frequency fO corresponding to the ID code through the variable frequency filter 21. a tone signal processing circuit 25 which outputs the data tone signal inputted later through the variable frequency filter 21 as it is when receiving the tone signal;
is a tone decoder circuit that receives and decodes the data tone signal output from the tone signal processing circuit 23, and outputs a control signal corresponding to the operation switch 10a of the wireless transmitter 1 to the controlled object.

The operation of the wireless receiver 2 having such a configuration is as follows.
This will be explained with reference to the timing chart shown in the figure.

The wireless receiver 2 receives and demodulates the wireless signal including the star 1-)-tone signal outputted from the wireless transmitter 1, the tone signal corresponding to the ID code, and the data tone signal using the front end unit 20. (Second A
See figure (a)>.

First, when the start tone signal of frequency fO is received and demodulated by the front end section 20 and output to the variable frequency filter 21, the start tone signal of frequency fo is passed from the frequency setting signal generation circuit 22 to the variable frequency filter 21. Since the frequency setting signal is added, the start tone signal output from the front end section 20 passes through the frequency variable filter 21 as it is and is transmitted to the tone signal generation circuit 23, and the tone signal generation circuit 23 receives this start tone signal. Upon receiving the tone signal, a starting signal is output to the timing pulse generating circuit 24 to start it (see FIGS. 2A (b) to (e)). The timing pulse generation circuit 24 is activated by this activation signal, and the period T from outputting the first timing pulse to the frequency setting signal generation circuit 22 to outputting the second timing pulse is After receiving the ID code set in the ID code setting section 26, this ID
A frequency setting signal for passing a tone signal of frequency fz corresponding to the code is output to the variable frequency filter 21, while during this period, a tone signal of frequency fx corresponding to the ID code is transmitted from the wireless transmitter l. is being transmitted, so when the tone signal corresponding to the ID code received and demodulated by the front end unit 20 matches the passing frequency of the variable frequency filter 21, the tone signal output from the front end unit 20 is The signal passes through the frequency variable filter 21 and is applied to the tone signal processing circuit 23 (see FIGS. 2A (a) to (e)).

After this, each /Z period T until the timing pulse is applied from the timing pulse generation circuit 24 to the frequency setting signal generation circuit 22 is generated by sequentially varying the frequency setting signal generation circuit 22 to a predetermined value. Since the frequency setting signal is applied to the frequency variable filter 21, the passing frequency of the frequency variable filter 21 in each period T' changes in the order of f1, f2...fn (second A).
(See Figures (b) to (d)). On the other hand, while each period T continues n times, the data tone signal of frequency f3 is continuously transmitted from the wireless transmitter (Fig. 2A (&)
For example, if the frequency of the data tone signal received and demodulated by the front end section 20 is f3,
Data at frequency f3 is generated only when the passing frequency of the variable frequency filter 21 reaches f3, that is, only during the period from when the fourth timing pulse is output from the timing pulse generation circuit 24 until the fifth timing pulse is output. The tone signal passes through the variable frequency filter 21 and is transmitted to the tone signal processing block 23 (see Fig. 2A(b)).
) to (e)).

Then, the tone signal processing circuit 23 converts the data tone signal of frequency f3 into a tone signal only when the tone signal of frequency fx corresponding to the ID code is transmitted before the data tone signal of frequency f3 is transmitted. The data tone signal is output to a decoder circuit 25, and the tone decoder circuit 25 receives and decodes this data tone signal to perform necessary control on the controlled object. However, if the tone signal processing circuit 23 does not receive a tone signal corresponding to the ID code before receiving the data tone signal, no control is performed because the data tone signal is not output to the tone decoder circuit 25.

Since the ID code is thus configured to be transmitted by tone signals, the ID code setting section 11 on the wireless transmitter side can set a large number of ID codes, and a large number of tone signals corresponding to these ID codes can be transmitted. If the frequency is generated by the tone signal generation circuit 12,
By simply selecting and transmitting a tone signal with one frequency from among these tone signals, the variable frequency filter on the wireless receiver side identifies the frequency of the tone signal and transmits it.
Since it is possible to determine whether the D code matches, it is possible to significantly reduce the transmission time compared to the conventional method of transmitting a large number of binary codes and determining the ID code. Since only one variable frequency filter is required on the device side, the configuration is simplified.

In the above embodiment, the data tone transmitted from the wireless transmitter 1 is configured to transmit only a data tone of one frequency depending on the operation switch operated, but the configuration is not limited to this configuration. For example, a period for outputting data tones f1 to fn may be determined in accordance with the output of a timing pulse, and data tone signals fl and f3 may be sequentially transmitted when one operation switch is operated. It is also possible to sequentially receive these data tone signals on the wireless receiver side and perform control according to the combination of these data tone signals.In this way, the frequency of data tones can be reduced. This allows for many different controls even in different cases.

In the above embodiment, the timing pulse generation circuit 13 of the wireless transmitter 1 outputs a total of (n+2) for each period T.
The configuration is such that a timing pulse of 10 times is output.
The configuration is not limited to this, but it is also possible, for example, to have a configuration in which the timing pulse generation circuit 13 outputs the timing pulse only twice, and then the tone signal generation circuit outputs the data tone signal for a predetermined period of time. be.

FIG. 3 is a block diagram showing the configuration of the wireless receiver 2' used in the wireless control system of the present invention as set forth in claim 2. Instead, the difference is that an ID code registration means 27 and a mode switching means 28 are provided, so the same parts are given the same reference numerals and a description thereof will be omitted. Note that the wireless transmitter used in this wireless control system has the same configuration as the wireless transmitter 1 described in claim 1 above.

The mode switching means 28 has a control mode for performing control according to the data tone signal transmitted from the wireless transmitter 1 side, and a control mode for registering an ID code corresponding to the tone signal transmitted from the wireless transmitter 1 side. It is provided with a changeover switch 28a for directly transmitting the tone signal demodulated by the front end section 20 to the TD code registration means 27 in the registration mode.

Further, the ID code registration means 27 has a mode switching means 28.
When the registration mode is set by switching to the registration mode, the tone signal of the frequency fO corresponding to the ID code transmitted from the transmitter L side via the front end section 2o is directly transmitted via the changeover switch 28a of the mode switching means 28. In response, the tone signal is converted into a corresponding ID code and then registered, and when the mode switching means 28 switches to the control mode and is set, the ID code registered in the registration mode is converted into a frequency setting signal. The output signal is output to the generating circuit 22.

The operation of the wireless receiver 2' having such a configuration in the registration mode will be explained with reference to the timing chart of FIG. 3A.

When the wireless receiver 2' is switched to the registration mode by the mode switching means 28 and set, until a wireless signal is input from the wireless transmitter 1 attempting to register an ID code and the timing pulse generation circuit 24 is activated. The operation is similar to that of the wireless receiver 2 according to the first aspect. and timing pulse generation circuit 24
During the period T from when the first timing pulse is input to the ID code registration means 27 to when the second timing pulse is input, the wireless transmitter 1 outputs a tone signal with a frequency fx corresponding to the ID code. This tone signal is received by the front end section 20, demodulated, and directly applied to the ID code registration means 27 via the changeover switch 28a of the mode changeover means 28, and the ID code registration means 27 processes this tone signal accordingly. Register after converting to the correct ID code.

Further, when the wireless receiver 2' is switched to the control mode by the mode switching means 28, the timing pulse generating circuit receives a wireless signal transmitted from the wireless transmitter l side after being switched to the control mode and is set. The operation up to activation is the same as that of the wireless receiver 2 described in claim 1. Then, from the timing pulse generation circuit 24 to the ID code registration means 27
The period T from when the first timing pulse is input to when the second timing pulse is input is:
The ID code registered in the code registration means 27 is output to the frequency setting signal generation circuit 22, and the frequency setting signal generation circuit 22 generates a frequency setting signal for passing the tone signal of the frequency fx corresponding to this ID code. On the other hand, during this period, since the tone signal of the frequency fx corresponding to the ID code is output from the wireless transmitter l, the front end unit 2
When the frequency fx of the tone signal demodulated by 0 and the passing frequency fx of the same wave number variable filter 21 match,
The tone signal of frequency fx is transmitted to the tone signal processing circuit 23. After this, the tone decoder circuit 2 is operated in the same manner as the wireless receiver described in claim 1.
5, the control object is controlled.

In this way, in the present invention, the ID code transmitted from the wireless transmitter can be received on the wireless receiver side and automatically registered. This eliminates the hassle of setting.

[Effects of the Invention] According to the present invention as set forth in claim 1, wireless transmission can be performed by simply transmitting one tone signal among tone signals of a large number of frequencies corresponding to a large number of ID codes on the wireless transmitter side. A simple configuration in which a variable frequency filter is provided on the receiver side allows tone signal frequency matching to be determined. Therefore, it is possible to provide a wireless transmission control system with reduced wireless signal transmission time and improved reliability and operability.

According to the present invention described in claim 2, the ID code of the wireless transmitter can be automatically registered by setting the wireless receiver side to the registration mode, so that the effect described in claim 1 can be achieved. In addition, a wireless transmission control system with improved operability can be provided.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the internal configuration of a wireless transmitter used in the system of the present invention described in claim 1.2, FIG. 1A is a timing chart explaining its operation, and FIG. FIG. 2A is a block diagram showing the internal configuration of the wireless receiver used in the system of the present invention described in FIG. 1; FIG. 2A is a timing chart explaining its operation;
FIG. 3 is a block diagram showing the internal configuration of a wireless receiver used in the system of the present invention as set forth in claim 2;
FIG. 3A is a timing chart explaining its operation, FIG. 4 is an explanatory diagram showing the internal configuration of a conventional wireless transmitter, and FIG. 4A is a timing chart explaining the operation of the wireless transmitter.
FIG. 2 is an explanatory diagram showing the format of one frame of a wireless signal. [Description of symbols] 1...Wireless transmitter 10a-1On...Operation switch 11...ID
Coat setting section] 2...Tone signal generation circuit 13...Timing pulse generation circuit 14...Transmission circuit section +4a...Modulation circuit 14b...Transmission circuit 2.2'...Wireless receiver 20・ 21 ・ 22 ・ 23 ・ 24 ・ 25 Pot 26 ・ 27 ・ 28 ・ ・Front end section ・Variable frequency filter ・Frequency setting signal generation circuit ・Tone signal processing circuit ・Timing pulse generation circuit ・Tone decoder circuit ・ID code setting section・ID code registration means ・Mode switching means

Claims (2)

[Claims] (1) Control data sent from the wireless transmitter
In a wireless transmission control system in which a wireless receiver receives a wireless signal with at least a D code and performs control processing according to the control data, the wireless transmitter has the following functions: an ID code setting section, at least one operation switch for performing control operations, and a timing pulse that is activated when any of these operation switches is operated and outputs a timing pulse at each predetermined period. a transmitting circuit section comprising a timing pulse generating circuit that modulates a high-frequency carrier wave with a tone signal, a transmitting circuit that amplifies and transmits a modulated wave output from the modulating circuit, and one of the above-mentioned operation switches. is operated and the timing pulse generation circuit is activated until the timing pulse is input, a start tone signal is generated and output to the transmission circuit section, and after that, it is output from the timing pulse generation circuit. The period until receiving the timing pulse is as per ID above.
Generates a tone signal corresponding to the ID code determined by the code setting section and outputs it to the transmitting circuit section, and subsequently generates a data tone signal for a predetermined period of time and outputs it to the transmitting circuit section. a tone signal generation circuit; the wireless receiver includes a front end section that receives the radio signal output from the wireless transmitter and demodulates the tone signal; and a frequency that allows only the tone signal of a set frequency to pass through. a variable filter; a timing pulse generation circuit that is activated by the activation signal and outputs a timing pulse having the same period as the timing pulse generation circuit of the wireless transmitter; and an ID code that is the same as the ID code set on the wireless transmitter side. An ID code setting section for setting a code, and a start tone signal transmitted from the wireless transmitter side during reception standby and a period from when the timing pulse generation circuit is activated until the timing pulse is output. A frequency setting signal is generated and outputted to the variable frequency filter, while the period until receiving the next timing pulse output from the timing pulse generation circuit is determined by the I set in the ID code setting section.
A frequency setting signal for passing the tone signal corresponding to the D code is generated and outputted to the frequency variable filter, and thereafter, the frequency setting signal is set at each period until receiving the timing pulse output from the timing pulse generation circuit. a frequency setting signal generation circuit that sequentially varies a frequency setting signal to a predetermined value and outputs the generated signal to the variable frequency filter; and when receiving the start tone signal via the variable frequency filter, generates the timing pulse. After outputting a start signal to the circuit and receiving a tone signal corresponding to the ID code via the frequency variable filter, a tone signal is output that directly outputs the data tone signal input via the frequency variable filter. A wireless transmission control system comprising a processing circuit and a tone decoder circuit that receives and decodes a data tone signal output from the tone signal processing circuit and outputs a control signal. (2) Instead of the ID code setting section, the wireless receiver has a control mode in which control is performed according to a data tone signal transmitted from the wireless transmitter side, and a tone signal transmitted from the transmitter side. mode switching means for switching and setting a registration mode for registering an ID code corresponding to the ID code; and when the mode switching means switches to and sets the registration mode, the transmitter side directly receives the tone signal corresponding to the ID code transmitted from the controller, converts the tone signal into the corresponding ID code, and registers the tone signal.When the control mode is set by the mode switching means, the registered ID code registration means for outputting the ID code to the frequency setting signal generation circuit to set the passing frequency of the variable frequency filter to the frequency of the tone signal corresponding to the registered ID code, The wireless transmission control system according to claim 1.