JPS61236334A - Slave machine system utilizing lamp line transport - 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 [Field of Application of the Invention] The present invention proposes that the wall switch +6 can be used even in household lighting circuits in power line conveyance systems.

[Background of the invention]

Conventionally, a power line transmission system has been used in which control signals are transmitted over power lines using a high-frequency carrier frequency. In such a power line conveyance system, two wires of the power line are usually drawn together as a power outlet slave unit or a ceiling adapter slave unit to control the load at both ends of the load.

However, when it comes to lighting equipment, it is common for only one wire of the electric light wire to be wired to the lighting equipment, and the other wire of the electric light wire to the lighting equipment via a wall switch or lighting control panel. . Therefore, if you are trying to control a lighting fixture using the power line transport method, and you try to attach the slave unit to the lighting fixture, when the wall switch is turned off, it will be blocked by the wall switch and the slave unit will be connected to the slave unit. A problem arises in which signals and power to the slave units themselves are not supplied through the power line. Also, if you try to install a slave unit on the wall switch side, if the lighting equipment is a fluorescent lamp, there is a problem that the control signal will be blocked by the ballast built into the lighting equipment.
To solve this problem, a problem remained.

Therefore, for loads that involve such a wall switch and require one-sided wiring, it is possible to freely add additional signal lines or power lines except in newly built buildings.

[Purpose of the invention]

Therefore, an object of the present invention is to provide an electric light line transportation system that
The objective is to construct a system that allows a wall switch type slave unit to be installed even in an existing home lighting circuit that has one-sided wiring.

[Summary of the invention]

In order to realize a wall switch-type slave unit using an existing home lighting circuit that has one-sided wiring, the key is to obtain power from the wall switch-type slave unit.

However, it is very difficult to obtain power at this wall switch because it is only available through a load.

Therefore, in the present invention, instead of using an off switch as the wall switch, we have created a system in which the power is cut off only for a short time when the wall switch is operated, and a slave system that is linked to the operation of the wall switch is connected to both ends of the load. Each time the wall switch is turned off for a short period of time, this change is detected and the load is switched. As a result, the power to the slave system is turned off only when the wall switch is operated, but at this level there is no problem at all due to the operation of the backup circuit.
Moreover, since the load is switched in conjunction with the operation of the wall switch, it is also possible to switch the load using the wall switch.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 1 to 18.

First, the prior art will be briefly illustrated using block diagrams shown in FIGS. 14 and 15. The structure is such that a signal from a master unit 8 energizes two power lines 2 and reaches a wall switch type slave unit 5 via a load 4. Here, for example, as load 4, the 15th
Considering the fluorescent lamp load 4 as shown in the figure, first, the signal is blocked by the choke coil 402 as a stabilizer, so it is necessary to connect a capacitor 408 in parallel to the power supply. Signals can be transmitted to the wall switch type slave unit 5 in a nine-deck pattern, but when the fluorescent lamp 401 is off, the power to the wall switch type slave unit 5 can only be supplied through the capacitor 408. It was difficult to realize this because there was no supply of electricity and it was not possible to create sufficient power.

To solve this problem, the present system which was invented will be explained below using one embodiment.

FIG. 1 shows a basic embodiment of the present invention in a block diagram. Reference numeral 7 denotes a button-off switch that is turned off only when operated, and is usually installed as a wall switch on one of the electric light lines 2.

Reference numeral 50 denotes a slave system that is combined with a bush-off type wall switch 7, and this slave system 50 is connected to the main controller 5.
and a contact switching circuit 5. That is, the main control section 5
connects two electric lights 1 including wall switch 7 via terminals C and D.
#A2, and the load 4 and contact switching circuit 6 are each connected to the commercial power supply l via this main control unit 5. To explain further, the main control unit 5 constituting the slave unit system 50 is connected to the base unit 8 which is transmitted via the power line 2.
The contact position of the contact 5' is changed over by a control signal from the contact 5'. Further, the contact switching circuit 6 switches the contact position of the contact 6' each time the wall switch 7 is operated, and these contacts 5' and C are connected via the load 4 to form a three-way switch configuration. Note that as the contacts 5' and 6', self-hold type latching relays or stepping relays are generally used. By adopting such a system, the power supply 1 is always applied to the slave system 50, and stable operation is always guaranteed. Needless to say, since the power is turned off momentarily when the wall switch 7 is operated in the slave system 50, it is necessary to provide a backup circuit consisting of, for example, a high-capacity capacitor. FIG. 2 shows a specific embodiment of the contact switching circuit 6. In FIG. In this embodiment, a ratchet relay 6 switches the contacts 6' of the relay coil 602 each time the relay coil 602 is energized.
0, and each time the wall switch 7 is pressed to open its contacts and close again, the contacts 6' are replaced. That is, 601 is a rectifier circuit connected between two power lines 2 via the main control unit 5, and a protective resistor 60 is connected to the DC output side of this rectifier circuit 601.
3. A series circuit of a diode 604 and a relay coil 602 is connected, and a parallel circuit of a capacitor 605 and a discharge resistor 606 is further connected in series between the diode 604 and the relay coil 602. With this configuration, when the bush-off switch (wall switch) 7 is operated, the charge of the capacitor 605 is transferred to the resistor 606 connected in parallel with it.
is discharged and reset through. Thereafter, when the contact of the bush-off switch 7 is turned on, the charging current of the capacitor 605 flows through the relay coil 602 connected in series with it, driving and holding the contact 6' of the relay coil 602. Note that the diode 604 is the capacitor 60.
This is to prevent the discharge current of No. 5 from flowing into the relay coil 602. In this manner, the contact position of the contact 6' can be changed each time the busy bush-off switch 7 is operated. In addition, since the contact 5' of the main control unit 5 is switched in response to a signal from the main unit 8, it is possible to switch between the wall switch 7 and the main unit 3 by configuring the under-contact contact 5' and contact 6' in the figure as a three-way switch. It becomes possible to turn the load on and off.

FIG. 8 shows another embodiment. In FIG. 3, the contact 5'' of the main control unit 5 of the slave system 50 is turned off for a short time by a signal from the base unit 3, and the input power to the rectifier circuit 601 in the contact switching circuit 6 is cut off.

This allows the charge in the capacitor 605 in the contact switching circuit 6 to be discharged during a short off period, even when the main control unit 5 receives a signal from the base unit 3 or when the button-off switch 7 is operated. However, by applying a reset when the power is turned on, the relay 60 is driven using the recharging current of the capacitor 605, and this contact is held.

FIG. 4 shows an embodiment in which a general relay 60' can be used as the drive relay. In this embodiment, when the bush-off switch 7 is turned off for a short period of time, the charge on the capacitor 609 is discharged through the resistor 611, but in the circuit of this embodiment, if the off period is short, sufficient discharge is not possible; Since the recharging current of the capacitor 605 necessary to drive the relay 60', that is, the excitation current, cannot be obtained, the contact does not switch, but when the off period exceeds a certain value, a sufficient excitation current can be obtained.
The contacts are switched and held by the current supplied from resistors 607 and 610.

Note that the capacitors 612 and 611 are connected to stabilize the operation of the circuit. Further, as a circuit that performs such a circuit operation, there has already been proposed a system such as Utility Model Publication No. 56-52688. In this way, the contact 6' of the relay 60' is switched by changing the opening time of the wall switch 7, and the main control unit 5 operates in response to a signal from the main unit 8.
The load 4 can be controlled both from the wall switch 7 and the master unit 8 by configuring the contact 5' of the load 4 as a three-way switch.

Next, the embodiment shown in FIG. 5 will be explained. In this example,
Depending on the type of signal from the base unit 3, the off period of the contact point 5'' operated by the main control unit 5 of the slave unit system 50 is adjusted.
When the switch 7 is operated, the contact 6' can be switched using the general relay 60' by controlling the OFF period of the power supplied to the contact switching circuit 6. In this embodiment, the main illumination 41 and the auxiliary illumination 42 can be switched alternately.

Next, what is shown in FIG. 6 is a further development of the embodiment explained in FIG. 5, in which three types of loads are sequentially switched. That is, by appropriately selecting the circuit constants of the contact switching circuit 60 explained in FIG. By providing two relay circuits with different values, the relays 801 and 802 of this relay circuit can be sequentially switched and controlled. Therefore, by connecting loads 9, 10, and 11 to each of the eight contacts of these relays 801 and 802, each load can be selectively operated. It is also possible to stop operation at full load.

FIG. 7 shows an example of the main unit 3. A signal from an input section 801 consisting of a key switch, etc. is input to a microcomputer section 802, and a signal digitized according to the signal content is superimposed on a high frequency wave as a carrier wave and output to terminal Y. After being amplified, the high frequency signal is It is output to the power line 2 via the terminal A%B of the transformer 304. On the other hand, when receiving a signal from power line 2,
L due to winding C of high frequency transformer 304 and capacitor 3
Only the signal is detected by the tuned circuit consisting of 16, and the PLL
303) is decoded into a digital signal and inputted to the terminal
Display etc. on 1.

FIG. 8 shows an example of the main control section 5 of the slave system 50 that is combined with the wall switch 7. The configuration of the input/output section with the power line 2 is the same as that of the base unit 8 in FIG. 7.

When a signal is received from the C%D terminal of the power line 2, a decoded digital signal is input to the terminal X, signal processing is performed by the microcomputer section 302, and a signal is output from the terminal W. Each time, the relay coil 501 is excited and the contacts are switched each time.

In FIG. 9, examples (a) and (b) of a digital signal modulated with a high frequency carrier wave between A and 8 or between C and D, and a digital signal decoded by a PLL are shown, respectively.

FIG. 1θ shows contact 5 as the relay control section 51 in FIG.
An example of a circuit configuration that can control the off-period in two types is shown below.The capacitor 512 is normally charged by a resistor 518 at all times.
When the K pulse signal is input, the thyristor 508 or 5
07 becomes conductive.

Here, if the resistance value of the resistor 510 is chosen to be larger than the resistance value of the resistor 509, when the terminal IK flaw signal is input,
The off period of contact 5 becomes longer. That is, when a signal is input to the terminal I, an exciting current is passed through the thyristor 508 in which the electric charge of the capacitor 512 is conducted to the relay coil 506 for a period of time constant determined by the resistor 510, and the contact 5'' is turned off during that period. Can be done.

Now, in the embodiment described above, in addition to the control operation of the main unit 8, the operation by the wall switch 7 is added, so the main unit 8 cannot know what state the load 4 is in. It becomes difficult. Therefore, we will continue to explain an embodiment that further improves this point.

FIG. 11 shows an embodiment of a load current detection method on the slave system 50 side. That is, 12 is a load current detection circuit, and a detection resistor diode 1218 connected in series with the load 4 is connected in parallel with the detection resistor 1212 for bypassing reverse current. In this way, the comparator 1201 compares the reference voltage generated by the Zener diode 1205 and the voltage across the detection resistor 1212,
When the voltage across the detection resistor 1212 exceeds the reference voltage, the output of the comparator 1201 becomes Hi level, and the slave system 5
A signal is sent to the terminal K of the main control unit 5 of 0. By detecting this, the main control unit 5 can notify the main unit 8 that the load is being energized. Note that it is clear that the current detection level can be multi-leveled. In addition, to explain the details, 1206 and 1209 are voltage dividing resistors connected to the input terminal of the comparator 1201, and the diode 121
0 and a voltage drop across a sensing resistor 1212 rectified and smoothed by a capacitor 1211. 1202.1204
is a pull-up resistor that adjusts the potential at various locations. In such a slave unit system 50, when a control signal or a response request signal is input from the main unit 8 in advance to the microcomputer unit +102 in the main control unit s, the load status is transmitted by including it in an answerback signal. You need to prepare a program to do this.

FIG. 12 shows another embodiment of the load current detection circuit 12 of FIG. 11, respectively. In (a), a current transformer 1219 connected in series with the load 4 detects a stain current, charges a capacitor 1216 via a diode 1218 and a resistor 1217, and the resulting voltage becomes the threshold voltage of a two-terminal thyristor 1215. When it reaches this point, a signal is output to the data input terminal K of the microcomputer section 802 of the main control section 5 of the slave system 50. In (b), when the voltage across the resistor 1224 reaches the threshold voltage of the 2i child thyristor 1222,
This is an example in which the phototransistor 1221 is made conductive and a terminal KK flaw signal is output.

FIG. 13 schematically shows the main parts of the programs on the base unit 8 side and the slave unit system 50 side for performing such transmission and reception processing. That is, (a) in the figure is an example of a program on the base unit 3 side, and when operating the base unit 3, the input section 8
When the necessary key operations are completed, this command is encoded.

The data is transferred to the slave system 50 side. Then (b) in Figure 1
The 10G on the handset system 50 side shown by starts, analyzes the received code signal, and if the base unit 3 side requests switching of the load 4, after performing the switching process of the load 4, The state of the load 4 is detected via the load current detection circuit 12, a signal indicating this load state is added, and a signal indicating the completion of the operation is sent to the base unit 8. Also,
If the state of the load 4 can be answered as a result of the code analysis, the state of the load 4 is detected and then an answer signal including a signal indicating this state is sent back to the base unit 8.

When these response signals from the handset system 50 side are received, the program on the base unit 3 side analyzes the status of the multi-load 4 from among the response signals, stores this if necessary, and inputs the information. 301 to complete a series of operations.

In the above embodiment, a test resistor and a current transformer connected in series with the load 4 were used to detect the state of the load 4. However, if the load is a lighting equipment, a light sensor detects the lighting of the lighting equipment. Direct detection is also possible.

In addition, although an example in which a button-off switch is used has been described in the embodiment, the present invention is not limited to this, and it can also be used by turning off and turning on a switch that can obtain an off signal, that is, a normal switch for a short time. It becomes possible to control the slave system.

According to these embodiments, the operation of the slave system is established by configuring the switch section so that a power-off signal can be obtained to control loads that require single-cut wiring, including wall switches. This is what I did. Therefore, according to the embodiment, the load can be controlled from both the base unit and the wall switch.

Furthermore, since there is no need to provide a capacitor for bypassing the control signal as described in the prior art, signal attenuation and absorption are less likely to occur, and transmission reliability can be improved.

〔Effect of the invention〕

As explained above, the present invention is a system in which a power line, a load, and a switch are connected in series in a control circuit that utilizes a power line carrier method that transmits signals to a power line using a high-frequency carrier frequency. The present invention provides a cordless handset system using electric light line transportation, characterized in that an off switch is used in the power supply system, and a switch circuit is provided in which the load is switched when the switch is turned off.

Therefore, the present invention establishes a slave system that can be used with existing wiring by combining a load that uses single-cut wiring and a slave unit connected in parallel.According to the present invention, the power supply on the slave system side is always obtained, so stable operation is guaranteed.

Furthermore, the load can be turned on and off using the wall switch in the same way as the main unit.

[Brief explanation of drawings]

Fig. 1 is a block diagram for explaining a basic embodiment of the present invention, Fig. 2 is a block diagram for explaining a more specific embodiment, Figs. 3, 4, 5, FIG. 6 is a block diagram for explaining the configuration of other embodiments, and FIG.
The figure is a diagram for explaining the internal configuration of the main unit, Figure 8 is a diagram for explaining the internal configuration of the main control section of the slave unit system, and Figures 9 (a) and (b) are electric wire conveyance systems. FIG. 1C is a diagram showing an example of a short-time off switch circuit incorporated into the embodiment. FIG. 11 is a diagram showing a current detection circuit incorporated into the embodiment. FIG. 12(a). 18(b) is a diagram showing other current detection circuits, and FIGS. 18(a) and (b).
) are flowcharts each showing an example of a control program that is installed in advance in the parent unit and slave unit systems.
FIG. 4 and FIG. 15 are block diagrams for explaining conventional slave device systems, respectively. 1 is commercial power supply, 2 is power line, 3 is main unit, 4 is load, 50
is a slave unit system, 6 is a contact switching circuit, 7 is an off switch, 601 is a full wave rectifier, 41/4209-10/11
are loads, 602 is a self-hold relay winding, and 6 is a self-hold relay winding.
14, 801, and 802 are general relay windings, 8 is a four-stage contact switching circuit, 302 is a microcomputer section, 301 is an input section, 8
03 indicates a PLL, 1201 a comparator, and 1221 a phototransistor. 1st 2nd Figure Handset system ~ $51216 612] 7th mouth:! -8 Figure Sheep 9 Figure Haya 10 Figure 11th $12 Figure 1 B iy 1z
za 13th concave

Claims (1)

[Claims] In a control circuit using a power line carrier method that transmits a signal to a power line using a high frequency carrier frequency, a system in which a power line, a load, and a switch are connected in series, an off switch is used as the switch, and the switch is 1. A cordless handset system using power line transport, characterized in that a switch circuit is provided for switching the load during off-operation.