JPH09312887A - Radio transmitter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and inexpensive transmitter without enlarging the outside dimensions even if information amount of transmitting addresses is increased by providing the transmitter with a transmitting address storage means which stores transmitting. addresses. SOLUTION: An operation switch 107 which sets sending, stop, operation amount, etc., of a transmitter 101 inputs and is connected to a control part 102. The control part 102 has a transmitting address storage means 1 which stores transmitting address information with an one-chip microcomputer that contains EEPROM and an operation information input means 104 which reads operation information set in the switch 107 from an input port 2. It also has a code signal generation means 105 which outputs stored address information and code signals that contain the operation information read from the switch 107 to an output port 3. A transmitting circuit 108 modulates the code signals and feeds high frequency signals to a transmitting antenna 109. Also, a receiver does not need a receiving address set switch, either.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wireless transmission device for transmitting home automation information, and more particularly to a wireless transmission device for transmitting information by weak radio waves.

[0002]

2. Description of the Related Art Conventionally, in a wireless transmission device used for home automation, home automation information is wirelessly transmitted by a weak radio wave because of the relationship with the Radio Law. The configuration will be described below with reference to FIGS. 7 to 8.

FIG. 7 shows a transmitter 101 of a conventional wireless transmission device.
In the configuration diagram showing, the control unit 102 is, for example, a one-chip microcomputer, and the transmission address input unit 103,
Operation information input means 104 and code signal generation means 10
Five. The transmission address setting switch 106 is, for example, a dip switch having eight circuits, and the transmission address set by a binary code is used as the transmission address input means 103.
Is connected to the control unit 102 so that it can be read as transmission address information. The operation switch 107 is, for example, a two-circuit tact switch, is connected to the control unit 102 so that it can be determined that it has been pressed, and is read as operation information by the operation information input unit 104. The code signal generating means 105 repeatedly generates a code signal including at least the transmission address information and the operation information when the operation switch 107 is pressed. Transmission circuit 108
Modulates the code signal into, for example, an ASK signal,
Power is supplied to the transmitting antenna 109 so that the modulated signal is radiated into space as a radio wave.

FIG. 8 is a block diagram showing a receiver of a conventional wireless transmission apparatus. When a radio wave transmitted from a transmitter 101 and ASK-modulated by the code signal reaches a receiver 110, it passes through a receiving antenna 111. Power is supplied to the receiving circuit 112. The radio wave is demodulated to the original code signal again by the receiving circuit 112, and the code signal is connected so that the control unit 113 can read it. The reception address setting switch 114 is set so as to match the transmission address information of the transmitter 101, and is connected so as to be read by the control unit 113 as the reception address information.

In the control unit 113, the address information included in the code signal demodulated by the receiving circuit 112, that is, the transmission address information sent from the transmitter 101 matches the reception address information set by the reception address setting switch 114. Only when the operation is performed, the operation information included in the code signal is reflected in the controlled device 115 as an operation command.

[0006] As described above, in the conventional wireless transmission device, in order to distinguish the radio wave from a specific transmitter from the radio wave from another transmitter, the transmission can be performed only from the specific transmitter. The address will be manually set so that the address information of the device matches the address information of the receiver.

[0007]

In such a conventional wireless transmission device, when it is necessary to use a plurality of wireless transmission devices in the same service area, the number of wireless transmission devices is equivalent to the number of wireless transmission devices. It is necessary to prepare address information to be used, and as the number of wireless transmission devices increases, the amount of address information that must be set also increases. Therefore, the outer shape of the address setting switch becomes large and the price becomes expensive. I had a problem.

Further, when a plurality of wireless transmission devices are used, there is a problem that enormous work man-hours are required to set the address setting switches of the transmitter and the receiver.

SUMMARY OF THE INVENTION The first object of the present invention is to provide a small and inexpensive transmitter by realizing the transmitter without using a transmission address setting switch.

A second object is to provide a small and inexpensive receiver by realizing the receiver without using the receiving address setting switch.

A third object of the present invention is to realize a wireless transmission device which does not require address setting for matching a transmission address and a reception address, thereby reducing the work man-hours required for installation and operation start. To provide.

[0012]

A first means for achieving the first object of the present invention is a transmitter constituted by a transmission address storage means for storing a transmission address.

The second means for achieving the second object has a receiving address registering switch, and is included in the code signal demodulated by the receiving circuit only when the receiving address registering switch is pressed. The receiver comprises a reception address registration means for registering the address information to be received.

A third means for achieving the second object uses a static RAM as a storage medium, and the static RAM stores the received address stored even when the main power of the receiver is turned off. The receiving address registering means described in the second means is characterized in that it is driven by a battery so that information is stored.

Further, a fourth means for achieving the third object is a radio transmission apparatus including a transmitter described in the second means and a receiver described in the second means.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION A first means for achieving the first object of the present invention is transmission address storage means for storing a transmission address, and operation information for setting operation information such as start / stop and operation amount. Input means, code signal generating means for repeatedly generating a code signal including at least the transmission address information stored in the transmission address storage means and operation information set by the operation information input means, and modulated by the code signal. The transmitter is configured by a transmission circuit that generates a radio wave and a transmission antenna that emits the radio wave toward the space.

The second means for achieving the second object has a receiving antenna, a receiving circuit for demodulating the radio wave sent from the transmitter into a code signal again, and a receiving address registration switch. Then, the receiver comprises a reception address registration means for registering the address information included in the code signal demodulated by the reception circuit only when the reception address registration switch is pressed.

A third means for achieving the second object uses a static RAM as a storage medium, and the static RAM stores the received address information even when the main power of the receiver is turned off. The receiving address registering means according to claim 2, wherein the receiving address registering means is driven by a battery so as to be stored.

A fourth means for achieving the third object is a wireless transmission device comprising a transmitter according to claim 1 and a receiver according to claim 2.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. (Embodiment 1) FIG. 1 is a block diagram showing a transmitter according to a first embodiment of the present invention, in which 101 is a transmitter, 107 is an operation switch for setting start / stop, operation amount, etc., and is input to a control unit 102. It is connected. The control unit 102 is, for example, a one-chip microcomputer including an EEPROM, and the transmission address storage unit 1 that stores transmission address information and the operation information input unit 104 that reads the operation information set by the operation switch 107 from the input port 2. And a code signal generating means 105 for generating a code signal including the stored address information and the operation information read from the operation switch 107 and outputting the code signal to the output port 3. Transmission circuit 108
Is connected so as to feed the radio high frequency signal obtained by modulating the code signal into, for example, an ASK signal to the transmitting antenna 109.

In the above configuration, the transmission address storage means 1 stores the transmission address in the EEPROM,
The transmission address setting switch becomes unnecessary.

Although the EEPROM incorporated in the microcomputer is used as the transmission address storage means in the embodiment, the EEPROM incorporated in the microcomputer is replaced with the EEPROM connected to the parallel port of the microcomputer or the serial port of the microcomputer. It is also possible to use a serial EEPROM connected to the same, and there is no difference in its operation and effect.

In the embodiment, the signal modulated by the transmission circuit 108 is an ASK modulation signal, but the signal modulated by the transmission circuit may be an FSK modulation signal or a PSK modulation signal.

(Second Embodiment) FIGS. 3 and 4 show a receiver according to a second embodiment of the present invention. In FIG. 3, the radio wave sent to the receiving antenna 111 is supplied to the receiving circuit 112. It is connected. The control unit 113 has a reception address registration means 4 and a driving means 5. Further, the reception address registration means 4 has a reception address registration switch 6 inside. The receiving circuit 112 is connected to the control unit 113 so that the code signal obtained by demodulating the above-mentioned radio wave can be read. The driving means 5 converts the operation command corresponding to the content of the operation information included in the code signal into an electric signal suitable for driving the controlled device 115, and drives the controlled device 115.

FIG. 4 shows an example of a concrete circuit of the main part of the receiver 110. The control unit 113 is composed of the microcomputer 7 and peripheral circuits. The microcomputer 7 shown here is a so-called one-chip microcomputer having a CPU, a ROM, a static RAM, and an input / output unit.

The receiving antenna 111 is connected to the receiving circuit 112 so that the radio wave ASK-modulated by the code signal transmitted from the transmitter 101 is supplied as high frequency current to the receiving circuit 112. The high frequency current is demodulated to the original code signal by the receiving circuit 112, and the code signal is connected so as to be read by the microcomputer 7.

The reception address registration switch 6 is input to the microcomputer 7 so as to determine whether or not it has been pressed.

The AC power supply 8 is connected to the power supply circuit 10 via the main power supply switch 9, and the AC power supply 8 is connected to the power supply circuit 1.
It is converted into a DC voltage by 0. The DC voltage is connected via the diode 11 so as to drive the static RAM 12, the receiving circuit 112 and the microcomputer 7 built in the microcomputer 7.
The static RAM 12 is also connected so as to be directly driven by the battery 13, so that the static RAM 12 can be operated even when the main power switch is turned off or a power failure occurs.
Since the battery 12 is driven by the battery 13, the contents stored in the static RAM 12 are backed up.

In the above construction, the reception address registration means 4 transfers the transmission address of the transmitter to the receiver side to register the reception address, and the reception address setting switch becomes unnecessary. Becomes

Further, with the above configuration, since the reception address registration means 4 uses the static RAM 12 backed up by the battery 13 as a storage medium, the power is turned off when the AC power supply 8 is switched off or due to a power failure or the like. Even if the address is registered, the registered address information will not disappear.

In the embodiment, the radio wave demodulated by the receiving circuit 112 is an ASK modulated signal, but the radio wave demodulated by the receiving circuit may be an FSK modulated signal or a PSK modulated signal.

(Embodiment 3) FIG. 5 shows a wireless transmission apparatus according to a second embodiment of the present invention.
a, 14b ... 14z are transmitters 101a, 101b ... 101z of the first embodiment of the present invention and receivers 110a, 110b ... 1 of the first embodiment of the present invention.
10z and controlled devices 116a, 116b ... 11
It has 6z.

In the above structure, the wireless transmission device 14a
Is a relatively simple operation in which the receiving address registration switch is turned to the "on" side, the specific transmitter is operated to register the address, and then the receiving address registration switch is turned to the "off" side. The work will be completed.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS.
This will be described with reference to FIG.

The same parts as those of the conventional example are designated by the same reference numerals. FIG. 1 is a configuration diagram showing a first embodiment of the present invention. Reference numeral 101 is a transmitter, 107 is an operation switch for setting start / stop, an operation amount, etc., which are input and connected to a control unit 102. The control unit 102 is, for example, a one-chip microcomputer including an EEPROM, and includes a transmission address storage unit 1 that stores transmission address information and an operation switch 1.
Operation information input means 104 for reading the operation information set at 07 from the input port 2, and a code signal generation for generating a code signal including the stored address information and the operation information read from the operation switch 107 and outputting it to the output port 3. It has means 105. The transmission circuit 108 is connected so as to feed a radio high frequency signal obtained by modulating the code signal to an ASK signal to the transmission antenna 109.

In the above structure, the EEPROM incorporated in the control unit 102 stores the transmission address information corresponding to the last three digits of the serial number of the transmitter, for example, by the transmission address storage means 1. When an operation input is obtained from the operation switch 107, the code signal generating means 105 repeatedly generates a code signal including at least the transmission address information and the operation information. The code signal generating means 1
Reference numeral 05 generates a code signal while the operation input from the operation switch 107 is being obtained, and stops the generation of the code signal when the operation input from the operation switch 107 is cut off. The transmission circuit 108 modulates two different amplitudes according to the code bit value "1" or "0" of the code signal generated by the code signal generating means 105, for example.
Modulation is performed, and the ASK modulated signal is amplified so as to transmit weak radio waves below the regulation range according to the Radio Law. Transmission circuit 1
The ASK modulation signal output modulated and amplified by 08 is transmitted to the space as a radio wave via the transmitting antenna 109.

FIG. 2 is a timing chart showing the operation input to the operation switch 107 and the code signal output from the code signal generating means 105 in the first embodiment. That is, when the operation input from the operation switch 107 is turned on,
The code signal generating means 105 repeatedly generates a code signal including transmission address information and operation information, and stops when the operation input from the operation switch 107 is turned off.

As described above, according to the transmitter of the first embodiment of the present invention, the EE can be obtained by using the transmission address storage means.
Since the transmission address is stored in the PROM, the transmission address setting switch becomes unnecessary, and even when the number of wireless transmission devices increases and the amount of information of the transmission address to be set increases, the external shape becomes the same as the conventional address setting switch. You can store the sending address without increasing the size,
A small and inexpensive transmitter can be easily realized.

Although the EEPROM incorporated in the microcomputer is used as the transmission address storage means in the embodiment, the EEPROM incorporated in the microcomputer is replaced with the EEPROM connected to the parallel port of the microcomputer or the serial port of the microcomputer. It is also possible to use a serial EEPROM connected to the same, and there is no difference in its operation and effect.

Although the signal modulated by the transmission circuit is an ASK modulation signal in the embodiment, the signal modulated by the transmission circuit may be an FSK modulation signal or a PSK modulation signal.

Next, the second embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. In addition, the same parts as the conventional example,
The same number shall be given. As shown in the figure, the radio wave sent to the receiving antenna 111 is connected to the receiving circuit 112 so as to supply power. The control unit 113 has a reception address registration means 4 and a driving means 5. Further, the reception address registration means 4 has a reception address registration switch 6 inside. The receiving circuit 112 is connected to the controlled device 115 so that the code signal obtained by demodulating the above-mentioned radio wave can be read. Drive means 5
Converts the operation command corresponding to the content of the operation information included in the code signal into an appropriate electric signal for driving the controlled device 115, and drives the controlled device 115.

FIG. 4 shows an example of a concrete circuit of the main part of the receiver 110. The control unit 113 is composed of the microcomputer 7 and peripheral circuits. The microcomputer 7 shown here is a CPU, ROM, static R
It is a so-called one-chip microcomputer having an AM and an input / output unit.

The receiving antenna 111 is connected so that the radio wave ASK-modulated by the code signal sent from the transmitter 101 is fed to the receiving circuit 112 as a high frequency current. The high frequency current is demodulated to the original code signal by the receiving circuit 112, and the code signal is connected so as to be read by the microcomputer 7.

The reception address registration switch 6 is input to the microcomputer 7 so as to determine whether or not it has been pressed.

The AC power supply 8 is connected to the power supply circuit 10 via the main power supply switch 9, and the AC power supply is the power supply circuit 10.
Is converted into a DC voltage. The DC voltage is connected via the diode 11 so as to drive the static RAM 12, the receiving circuit 112 and the microcomputer 7 built in the microcomputer 7. The static RAM 12 is also connected so as to be directly driven by the battery 13, so that the static RAM 1 can be operated even when the main power switch is turned off or a power failure occurs.
2 is driven by battery 13, so static R
The content stored in the AM 12 is backed up.

On the other hand, a series circuit of the controlled device 115 and the triac 16 is connected to the AC power supply 15, and the triac 1
6, a gate current flows from the DC power supply 17 through the light receiving portion of the photocoupler 18. Then, the light emitting portion of the photocoupler 18 is driven from the output portion of the microcomputer 7 via the transistor 19, and the light receiving portion of the photocoupler 18 is operated by passing a current through the light emitting portion, and a gate current flows from the DC power supply 17, TRIAC 1
6 is controlled to be conductive.

Therefore, the microcomputer 7 reads the operation information sent from the transmitter 101 as the operation information included in the code signal demodulated by the receiving circuit 112. Furthermore, “ON” or “OFF” according to the operation information
From the output of the microcomputer 7,
It is configured to drive the triac 16 “on” and “off” to control the controlled device.

Next, the operation of the receiver 110 configured as above will be described with reference to the flowchart of FIG. When the main power switch 9 is turned to the conduction side, the microcomputer 7
The reception operation is started in accordance with the procedure of the program shown in the flowchart of FIG.

First, when registering the address of the receiver 110, the reception address registration switch 6 is turned to the "ON" side, and in step 20, the microcomputer 7 judges that the reception address switch is "ON". Then, in step 21, it is determined whether the code signal is received or not.
When the operation switch 107 of the transmitter is pressed, the radio wave ASK-modulated by the code signal including the transmission address of the transmitter is sent to the receiver, and the receiving circuit 112 demodulates it again into the code signal. The code signal is read by the microcomputer 7, and in step 22, the address information of the transmitter included in the code signal is registered in the static RAM 12 as the address information of the receiver, whereby the transmission address of the transmitter is received by the receiver. Registered as an address.

When the reception address registration is completed and the reception address registration switch 6 is turned to the "OFF" side, step 20
Then, the microcomputer 7 determines that the reception address registration switch 6 is "OFF", and enters a waiting state for the code signal in step 23. At this time, if you press either "ON" or "OFF" of the transmitter operation switch,
A radio wave that has been ASK-modulated by a code signal including a transmission address of the transmitter and operation information is sent to the receiver and is demodulated again by the receiving circuit 112 into a code signal. Next, at step 24, it is judged whether the transmission address information included in the code signal read by the microcomputer 7 matches the reception address information registered in the static RAM 12. If the result of this determination is that they match, in step 25, an "ON" or "OFF" signal corresponding to the operation information included in the same code signal is sent from the output section of the microcomputer 7, and the triac 16 is turned "ON" or "ON". It is driven “off” to control the controlled device 115. Here, when the transmission address information included in the code signal does not match the reception address information registered in the static RAM 12 in step 24, the operation information included in the code signal is not reflected in the controlled device 115.

As described above, according to the receiver of the second embodiment of the present invention, by using the reception address registration means 4, the transmission address of the transmitter is transferred to the receiver side and the reception address is registered. Therefore, the receiving address setting switch becomes unnecessary, and even if the number of wireless transmission devices increases and the amount of information of the sending address to be set increases, the receiving address can be set without increasing the external dimensions unlike the conventional address setting switch. Can be registered, and a small and inexpensive receiver can be realized.

Although the radio wave demodulated by the receiving circuit is an ASK modulated signal in the embodiment, the radio wave demodulated by the receiving circuit may be an FSK modulated signal or a PSK modulated signal.

Next, the third embodiment of the present invention will be described with reference to FIG.
Will be described with reference to. The same parts as those in the conventional example are denoted by the same reference numerals, and detailed description is omitted.

As shown in the figure, a few wireless transmission devices 1
4z, 14b ... 14z are transmitters 101a, 101b ... 101z of the first embodiment of the present invention and receivers 110a, 110b ... of the second embodiment of the present invention.
110z and controlled devices 115a, 115b ... 1
It has 15z.

With the above configuration, when trying to register the reception address of the receiver 110a of the wireless transmission device 14a, after turning on the power of the receiver 110a, the reception address registration switch 6 is turned to the "on" side to transmit. Machine 101
When the radio switch is transmitted from the transmitter 101a by pressing the operation switch 107 of a, the transmission address of the transmitter 101a is registered as the reception address of the receiver 110a.
When the reception address of the receiver 110a is registered, the reception address registration switch is turned to the "off" side. After that, the receiver 110a can invalidate the operation from the transmitter having the transmission address other than the transmission address of the transmitter 101a, and can operate the controlled device only from this transmitter. Similarly, if the reception addresses of the receivers 110b, 110c, ... 110z are registered, these receivers will receive the specific transmitters 101b, 101c, ... 1, respectively.
You can only operate from 01z.

As described above, according to the wireless transmission device of the third embodiment of the present invention, when there are a plurality of wireless transmission devices, the receiving address registration switch is turned to the "on" side and a specific transmitter is operated. After the address registration, the address registration work is completed by a relatively simple work such as tilting the reception address registration switch to the “off” side, and therefore the work man-hours required for installation and operation start can be reduced.

[0057]

As is apparent from the above embodiments, according to the present invention, by using the transmission address storage means, EE
Since the transmission address is stored in the PROM, even if the number of wireless transmission devices increases and the amount of information of the transmission address to be set increases, the transmission address can be stored without increasing the external dimensions, and the size is small. A transmitter with an effect that can be realized at low cost can be provided.

Further, since the transmission address of the transmitter is transferred to the receiver side to register the reception address by using the reception address registration means, the reception address setting switch becomes unnecessary and the number of wireless transmission devices is increased. Even if the number of installed wireless transmission devices increases and the amount of information of the transmission address to be set increases, the reception address can be registered without increasing the external dimensions, and it is possible to realize a small size at low cost. It is possible to provide an effective receiver.

Further, after the receiving address registration switch is turned to the "on" side, a specific transmitter is operated to register the address, and then the receiving address registration switch is turned to the "off" side, which is a relatively simple operation. Since the address registration work is completed, the address setting work for matching the transmission address and the reception address is unnecessary, and a wireless transmission device having an effect of reducing the work man-hours required for installation and operation start can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing a transmitter according to a first embodiment of the present invention.

FIG. 2 is a timing chart showing the operation of the transmitter.

FIG. 3 is a configuration diagram showing a receiver of a second embodiment of the present invention.

FIG. 4 is a circuit diagram showing a circuit of a main part of the receiver of the second embodiment.

FIG. 5 is a flowchart showing the operation of the receiver of the second embodiment.

FIG. 6 is a block diagram showing a wireless transmission device according to a third embodiment of the present invention.

FIG. 7 is a configuration diagram showing a transmitter of a conventional wireless transmission device.

FIG. 8 is a configuration diagram showing a receiver of a conventional wireless transmission device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 transmission address storage means 4 reception address registration means 6 reception address registration switch 8 AC power supply 12 static RAM 13 battery 14a wireless transmission device 101 transmitter 104 operation information input means 105 code signal generation means 108 transmission circuit 109 transmission antenna 110 receiver 111 Receiving antenna 112 Receiving circuit

Claims (4)

[Claims] 1. A transmission address storage means for storing a transmission address, an operation information input means for setting operation information such as start / stop and an operation amount, and transmission address information and the operation stored in at least the transmission address storage means. Code signal generating means for repeatedly generating a code signal including operation information set by the information input means, a transmitting circuit for generating a radio wave modulated by the code signal, and emitting the radio wave toward space A transmitter composed of a transmitting antenna. 2. A receiving antenna, a receiving circuit for demodulating radio waves transmitted from a transmitter into a code signal again, and a receiving address registering switch, and the receiving circuit is provided only when the receiving address registering switch is pressed. A receiver configured by receiving address registration means for registering address information included in the code signal demodulated by. 3. The static RAM is used as a storage medium, and the static RAM is driven by a battery so that the stored reception address information is stored even when the main power of the receiver is turned off. The reception address registration means according to claim 2. 4. A wireless transmission device comprising a transmitter according to claim 1 and a receiver according to claim 2.