JPS5925537A - Signal transmitter using power line - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a signal transmission device using electric wires that sends commands to a plurality of control objects using electric wires and controls designated controlled devices.

There is a device that transmits the signal to a remote location by modulating and transmitting a control signal onto other existing lines such as the power line 71 without specifically constructing a transmission line.

FIG. 1 is a block diagram showing the configuration of a conventional signal transmission device. In the example shown in the figure, a control signal is emitted from one unit via the commercial power line, selects one of unit 2 distributed in remote locations, drives the built-in switch in the unit, and loads the unit. It performs on/off control.

The device has a keyboard and controls a designated device 1.
and (1) a plurality of signal units 2 which receive commands from the main unit 1 via the commercial power line 3 and turn on/off the load 4. The sharp device 1 includes a keyboard 11 that gives a child device number and an on/off operation command, a matrix switch circuit 12 that performs matrix processing on the operation contents of the keyboard and outputs a coded signal, te2
A signal conversion section 13 that outputs a digital signal in which one format is a pulse train of several zero bits; an output modulation circuit 14 that performs frequency modulation upon receiving the digital format signal output from the signal conversion section; Power supply circuit 1 that converts the AC into the required DC output and supplies it to each circuit
5, a plug 16 connected to an outlet of a commercial power line, and a capacitor 17 through which only the modulated output of the output modulating circuit 14 is applied to the plug. The signal unit 2 extracts only the high frequency modulated signal sent out from the signal generator 1, and includes a resonant circuit 21 that performs pulse conversion of 20-odd bits, and a resonant circuit 21 that decodes the pulse train output from the resonant circuit and uses it to call the local station. For example, a signal decoder 22 that outputs open/close signals, a power supply circuit 23 that supplies DC power of the required voltage to each circuit, and a plug that is connected to a commercial power line outlet to supply AC power to the circuits. 24, a capacitor 25 inserted between the plug and the resonant circuit 21 and allowing only high frequency signals to pass through, and the signal decoder 2.
When an ON command is issued from 2, the plug 24 and the load outlet 26 are connected to each other by a semiconductor switching element (for example, a triac) 27.

In the above configuration, by manually inputting the number of the device to be commanded ρ (1, 2, 3...4) and the operation command (ON, 0FF) to the nuclear device from the keyboard 11 of the sharp device 1,
The signal converter 13 performs matrix processing, and outputs one formanotrapulse train to the output modulation circuit 14 for each command of the machine number or for each operation command to the machine. For example, when the pulse is 1, the modulation circuit 14 transmits a high-frequency signal for the time that the pulse is being output, and when the pulse is 0, no signal is detected. This high frequency signal is superimposed on the commercial frequency power supply, and the plug 16 of the R unit is
It is then transferred to power line 3.

On the other hand, the signal generator 2 connected to the power supply line 3 via the plug 24 extracts only the high frequency signal sent out from the sharpener 1 through the resonance circuit 21, and performs pulse conversion. This pulse train is sent to the signal decoder 22, where it is fully determined whether the signal is for the own station or not. If it is for the own station, the next operation command is 0N75. It decodes whether it is OFF or not, turns the semiconductor switch element 27i ON or OFF according to the content, and controls the load 4 connected to the outlet 26.

But conventional power &! Specifically, the signal transmission device using the above has the following disadvantages.

(1) There is no problem if the voltage of the power supply line is about 100 VAC, but if it becomes too high, such as 200 VAC or 400 VAC, it becomes susceptible to power supply noise and the like.

(2) The equipment manufacturing side is unable to grasp the status of the equipment, and its current operating status is unknown.

(3) It is necessary to use dedicated keys to select the machine number and operation command, making the operation cumbersome.

(4) With sharp instruments, multiple commands are handled by key operations, resulting in overlapping and interference of command signals.

A key operation open signal is sent, and the transmission format is interrupted midway.

Thus, conventional symbol transmission has been unreliable.

SUMMARY OF THE INVENTION An object of the present invention is to provide a signal transmission device using a power line system that improves practicality and reliability and eliminates the above-mentioned conventional drawbacks.

The present invention enables the designation of the machine number and operation command signals to be sent in two consecutive transmissions in chronological order by simply keying in the machine number on the sharp instrument, and also allows the operating state of the machine to be sent out in two consecutive transmissions. It is displayed on the side of the container so that it can be checked at all times.

FIG. 2 is a block diagram of a sharp instrument showing one embodiment of the present invention. In this embodiment, the same reference numerals are used for parts that are the same as those shown in FIG. 1 or have the same functions.

The configuration of the sharp instrument 10 includes, in addition to the conventional configuration consisting of a signal conversion section 131, a modulation circuit 14, and a power supply circuit 15, a display section 40 that displays the operating status of the sharp instrument, and a display section 40 that processes the contents of keys operated by the operator. A signal processing unit 5 that creates machine number designation and operation command signals in chronological order and sends them twice in succession.
0, and a power supply connection section 80 that enables transmission to and reception from a high voltage power supply line.

The signal processing unit 50 includes a key (or pushbutton) 51 provided corresponding to each of the control target instruments, a chattering prevention circuit 52 that eliminates chattering caused by the operation of the key, and a chattering prevention circuit 52 that eliminates chattering caused by the operation of the key. A wrap prevention circuit 53 that prevents the processing by the latter key from being executed when another key operation is subsequently performed before the processing based on the signal is completed; and a wrap prevention circuit 53 that holds the signal output from the wrap prevention circuit. a shift register 55 that outputs a signal to be sequentially shifted to a plurality of output terminals based on the output signal of the hold circuit 54; an oscillator 56 that supplies clock pulses to the shift register; Time table output and hold circuit 5
an AND circuit 57 that performs logical product with the output of 4;
Based on the output signal of the circuit, the signal converter 13 performs a switch operation for the child device number corresponding to the IJ conversion process.
An analog switch 58 and a hold circuit 54
It is determined whether the operation command of the slave device is ON or OFF based on the output signal of
Based on the output signal of the device operation command holding circuit 59 that lights up the device (ED, etc.) and the output signal of the circuit 59, the ON command and O
an operation command discrimination circuit 60 that outputs the FF command and all individually;
AN that calculates the AND of the time table output output from the shift register 55 and each output of the operation command discrimination circuit 60
D circuits 61 (ON) and 62 (OFF), analog switches 63 and 64 that perform one switching operation based on the output signal of the AND circuit 61, and a shift register 5.
5, an OR circuit 65 which logically ORs the output signals of the first stage and third stage of 5 and sends it to the AND circuit 57, and a shift register 55.
an OR circuit 66 that logically sums the output signals of the second stage and the fourth stage and sends it to the AND circuits 61 and 62; and a simultaneous command button 67 provided on the keyboard for controlling a plurality of child devices at once; Consists of an initial reset circuit 68 for canceling malfunction or erroneous memory when the power is turned on, an analog switch 69 that outputs an ON command in response to the output signal of the -simultaneous command button 67, and an analog switch 70 that outputs an OFF command. I can do it.

The power supply connection unit 80 also includes a safety fuse 81 connected to the outlet 16, and a switch 82 connected to the fuse and used to turn ON and OFF the power supply to the sharps.
The contact 83 is connected to the switch and excited by power supply from an external power supply, and the contact 83 is closed to supply AC power to the power supply circuit 15.

A relay 84 is connected between the line and the relay 84, which prevents abnormal voltages such as the voltage applied to the megger ring from entering from the outside and protects the elements in the circuit, and absorbs the energy of the excess voltage when it exceeds the power supply voltage level. It consists of a varistor 85.

That is, the power supply connection section 80 not only takes in power to the sharp instrument, but also insulates the abnormal voltage with a relay when it enters, removes the surge voltage with the varistor 85, and removes the surge voltage. We are trying to protect each circuit inside.

The operation of the sharp instrument with the above configuration will be explained.

By pressing the key corresponding to the child device you want to select, a signal is applied to the chattering prevention circuit 52, and the wrap prevention circuit 53. A hold signal is outputted via each of the hold circuits 54. If multiple keys are not operated within the processing time, the wrap prevention circuit 54 prioritizes the process corresponding to the key operated first. Shift register 5
An AND circuit 57 obtains an AND signal of the basic clock outputted from 5 and the hold signal, and this signal operates an analog switch 58. Based on the output signal of the analog switch 58, the corresponding slave device number (selection) command is sent to the signal conversion 't$13 through I/J box conversion processing and converted into a predetermined formant, and further output modulation circuit 1
4. Note that the shift register 55 is
It generates a timetable that determines the oscillation timing of the machine number command and the operation command.It has four output terminals, and each time the pulse signal output from the on-later 56 is counted, the The output signal is shifted up to the stage. Each output from this 1st stage to 4th stage building is
It is obtained step by step as shown in FIG. In this case, the pulse duration is set to be slightly longer than the signal transmission time of the Tfll format. Among these outputs, the outputs of the first and third stages sequentially pass through an OR circuit 65 and an AND circuit 57 to issue a child device number, and then the outputs of the second and fourth stages sequentially pass through an OR circuit 66. , and the output of the operation command discriminating circuit 60, are output to AND circuits 61 and 62 which issue operation commands.

As described above, when the key 51 is operated, a transmission format that specifies the slave device number is generated once, then a transmission format that specifies the operation is generated once, and these are generated once each, resulting in two consecutive wire transfer time series. occurs. Also, -
By operating the simultaneous command button 67, all devices connected to the line can be turned ON or OFF at the same time. This command is made via analog switches 69 and 70. By the way, by pressing again the key which turned on the signal generator in the same manner, an OFF operation command is sent and the signal device is turned OFF.

FIG. 4 is a block diagram of a signal generator showing an embodiment of the present invention. In this embodiment, the same reference numerals are used for parts that are the same as those shown in FIG. 1 or have the same functions.

The configuration of the signal generator 20 includes a resonance circuit 21, a signal decoder 22, a power supply circuit 23, a capacitor 25, and a semiconductor switch element 27.
In addition, there is a relay 28 connected to the lead terminal 35 to prevent the intrusion of high voltage such as mega-ring voltage, a contact 29 controlled to open and close by the relay, and a power supply circuit that steps down the power received through the contact 29 and connects it to the power supply circuit. an autotransformer 30 that supplies 23;
A bypass capacitor 31 is connected between the input and output of the autotransformer 30 to prevent the high frequency signal to the capacitor 25 from being attenuated by the autotransformer 30, and the autotransformer 30
A semiconductor switch element 27 connected to the output side of
A holding current for operating the relay 32 which is energized by the relay 32, the contact 33 that is ON during the excitation period of the relay 32, and which connects the middle of the lead wire connecting the lead terminal 35 and the lead terminal 36, and the semiconductor switch element 27. Dummy resistor 3 connected in parallel with relay 32 to ensure
4 are provided.

With the above configuration, when the terminals are connected to the power supply line, the power obtained through the autotransformer 30 is supplied to each circuit. If the signal generator is in an uncontrolled state, the semiconductor switching elements 2 and 7 are OFF, and the lead terminal 36 is not supplied with power.

The high frequency signal sent out from the parent end is taken into the resonant circuit 21 through the capacitors 31 and 25, and is further converted into a signal by the signal converter 22 to determine whether or not the local station is called. As a result of the determination, if it is the own station, it decodes what the next operating command is, and if it is an ON command, the semiconductor switching element 27iON is turned on, the relay 32 is energized, the contact 33 is closed, and the lead wire is closed. A power line is connected to the terminal 36 to supply power to the load.

FIG. 5 shows an example of the appearance of the parent end.

The power is supplied by connecting the plug 16 to the power supply HAC 220V line of the parent end 10. Power switch 82 on the panel surface. The 16 keys for selecting the number unit used for turning on and off the number unit 51% L E I) etc. are used and are incorporated into the key 51, and light up when the key is operated, and the key is operated again. The status indicator light 40 is turned off by . 5. A control indicator light that lights up every time a 1-format signal is sent to the device.5. a name plate 6 on which the number of the device and the name of the controlled device connected to the device can be written;
Kaneko 5'fjz-A simultaneous command button 67 is provided to control all at once. Furthermore, an external input connector 7 is provided for issuing commands to the device from the outside without using keys.

Further, FIG. 6 shows an example of the external appearance of the machine 20. The signal generator 20 is fixedly installed in the vicinity of the equipment to be controlled or in an existing distribution board using screws or the like. The lead wire 35 is connected to an AC 200-220 AC power line, and the lead wire 36 is connected to a device to be controlled. Also, on the front panel, there is a display window 37 that is visible from the entire outside of the lamp that lights up when the device is in operation. and a rotary switch 38 for setting the machine number.

7 shows an operation time chart of each part between the main end and the signal generator. By operating any of the keys 51, a holding signal for a certain period of time is output.

simultaneous! The control indicator light 5 blinks according to the format. Furthermore, in conjunction with the operation of key 51.

The status indicator light 40 lights up on the operated key. The format is repeatedly sent twice (that is, sent twice) in the order of the device selection command (■) and the ON, OFF operation command (■).

In addition, when the ALL-ON J button of the -simulation command button 67 is operated, the control indicator light 5 and the status indicator light 40 light up, and when the ALL-OFF J button is operated, the control indicator light 40 lights up. only lights up, and the slave devices are controlled all at once according to the command content.Format in this case: , only the slave device selection command is sent repeatedly, and this sending continues while the command button is operated. Ru.

The slave device selection command and operation command with the above configuration are issued continuously and repeatedly. However, - Qi command button 6
When rALL-ONJ or rALL-OFF J of 7 is operated, only the child device selection command is repeatedly sent out while the button is pressed.

As is clear from the above, according to the present invention, two consecutive signals for ON or OFF are sent simply by specifying the device number, and highly reliable transmission is possible without disturbing external noise. .

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a conventional signal transmission device.
FIG. 2 is a block diagram of the goodwill showing one embodiment of the present invention, FIG. 3 is an output signal waveform diagram of the shift register 55 used in the goodwill shown in FIG. 2, and FIG. 4 shows one embodiment of the present invention. FIG. 5 is a block diagram of the child device, and FIG. 5 is a perspective view showing an example of the external appearance of the goodwill according to the present invention. FIG. 6 is a perspective view showing an example of the external appearance of the child device according to the present invention;
FIG. 7 is a time chart of the operation of each part of the friendship and child device of the present invention. 10. Sharp instrument, 13=-signal conversion section, 14. Pa modulation circuit. 15.23...Power circuit, 16 plug. 17.25.31...Capacitor, 20...Slave device. 21... Resonant circuit %22... Signal decoding section. 27...Semiconductor switch element, 28.84.Relay,
29.33.83...Contact, 30...Transformer, 35
．． 36...Lead wire, 4o/display section. 50.°° Signal processing section, 51... Key, 52.° Chattering prevention circuit, 53.°. Wrap prevention circuit, 54.. Hold circuit. 55-゛Shift register & 56... Oscillator. 57.61.62...AND circuit, 58.63,64,69.70...Analog switch, 59...Slave device operation command holding circuit, 60...Operation command discrimination circuit, 65.66. ...OR circuit. 67--Q command button, 82... switch. 85...Barista. Figure 1 Figure 3 Figure 4 Figure 5

Claims (1)

[Scope of Claims] (1) At least one device connected to a controlled device that receives power from a commercial frequency power line and which performs energization control based on an external command, as well as a nuclear device, In the signal transmission device, the signal transmitting device includes one sharp device having a function of modulating a control signal for the symbol signal and sending it to the power line, a command input unit for selecting one of the symbol devices; signal processing for continuously outputting a signal in which a selection code of a pre-symbol device and an operation code specifying control contents of the controlled device are converted into 7 trixes based on an off command or an off command issued from the input unit; a display unit that individually displays the operation status of the human power unit; a signal conversion circuit that converts the matrixed signal output from the signal processing unit into two formats having a pulse train of a required number of bits; The sharp instrument includes a modulation circuit that modulates the output signal of the signal conversion circuit and transmits the modulated signal to the power line, and a resonant circuit that extracts only the modulated signal sent through the power line and converts it into a pulse train; a signal decoding unit that determines whether or not it is an eyelid call and a control operation mode based on the output signal of the resonant circuit; and a connection between the power line and the controlled device based on the determination result of the signal decoding unit. 1. A signal transmission device using a power line, characterized in that a front symbol is equipped with an output control section that performs control. (2. In Claim 1, the signal processing section includes a shift register that determines the oscillation timing of the slave device number command and the operation command, and a shift register that determines the oscillation timing of the slave device number command and the operation command, and provides the signal to the front symbol device based on the output signal of the command input section. a device operation command determining unit that determines the content of the operation command; and a second analog switch that performs a switch operation of the operational command corresponding to matrix conversion processing based on the output of the determining unit and the shift register;
Signal transmission using a power line, characterized in that it is equipped with a second analog switch and a metal fitting that perform I/J conversion based on the output signal of the command input section and the output signal of the shift register corresponding to the slave device number. Processing equipment. (3) Selectively specify multiple units and nuclear devices that are connected to each controlled device that receives power from a commercial frequency power line and perform energization control based on external commands, and A signal transmission device comprising one sharp signal generator having a function of modulating a control signal and transmitting the modulated signal to the power line, a command input section for selecting one of the front signal generators; A simultaneous human power section that selects all of the symbol devices, and a matrix of selection codes for the previous symbol device and operation codes that specify the control contents of the control target device based on the ON command or OFF command output from the human power section. a signal processing unit that continuously outputs signals and outputs only the selection code in a matrix form for the output from the simultaneous input unit; a display unit that individually displays the operation status of the input unit; a signal conversion circuit that converts the matrixed signal output from the signal processing section into two formats having a pulse train of a required number of bits; and a modulation circuit that modulates the output signal of the signal conversion circuit and transmits it to the power line. and a first power supply connection section that is provided between a power supply circuit that supplies DC power to each of the circuits and the modulation circuit and the power line and protects each of the circuits from abnormal voltages generated in the power line. It is equipped with a resonant circuit that extracts only the modulated signal sent through the power line and converts it into a pulse train, and a resonant circuit that extracts only the modulated signal sent through the power line and converts it into a pulse train, and a control device that determines whether or not it is a call for eye discharge based on the output signal of the resonant circuit. a signal decoding unit that determines an operation mode; and an output control unit that performs connection control between the power line and the controlled device based on the determination result of the signal decoding unit;
A signal transmission device using a power line, characterized in that the front symbol unit is provided with a second power supply connection part that protects each circuit on the signal unit side from an abnormal voltage generated in the power line, at a connection part to the power line. (4) In claim 3, the signal processing section determines the oscillation timing of the slave device number command and the operation command. a symbol operation command discriminator for discriminating the contents of an operation command given to the symbol machine; and a first analog switch for performing a switch operation of an operation command corresponding to matrix conversion processing based on the output of the discriminator and the shift register. A signal using a power line, characterized by comprising a switch, and a second analog switch that performs matrix conversion corresponding to a child device number based on the output signal of the finger input section and the output signal of the shift register. Transmission processing device.