JPH1094074A - Lighting monitor and control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting monitor and control system which can easily increase the number of connected devices controlling a lighting load and surely monitor and control the lighting load. SOLUTION: Terminal devices 3 are connected to a transmission line consisting of a pair of signal lines from master device 1, and lighting apparatuses 5 are connected to the respective terminal devices 3. The master device 1 sends a transmit signal including control data for controlling the lighting load to the terminal device 3. The terminal device 3 obtains a power source by rectifying and smoothing the transmit signal which is always transmitted and fed from the lighting apparatus 5 through an electric conductor 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting monitoring control system for monitoring and controlling a plurality of lighting loads.

[0002]

2. Description of the Related Art As shown in FIG. 8, in a conventional lighting monitoring and control system, a plurality of terminals 3 are connected to a base unit 1 via a transmission line 2 ', and a lighting device 5 is connected to the terminals 3. It is. In this type of lighting monitoring and control system, a terminal 3 is controlled based on control data transmitted from a base unit 1 via a transmission line 2 '.
Outputs a load control signal S _R for controlling the lighting load of the lighting fixture 5, and the lighting fixture 5 controls the lighting load based on the load control signal S _R , and the monitoring signal S _C corresponding to the lighting state of the lighting load. (See FIGS. 9 to 11), and
In is designed to monitor the lighting state of the lighting load by monitoring data transmitted through the transmission line 2 'from the terminal device 3 in response to the monitoring signal S _C.

[0003]

By the way, in this type of lighting monitoring control system, as shown in FIG. 9, a data transmission for transmitting the above-mentioned control data, monitoring data and the like between the master unit 1 and each terminal unit 3 is performed. And a terminal 3
And a system for supplying power to the lighting equipment 5 from the commercial power supply AC ₁ was generally used. However, since it is necessary to connect the power supply line 4 to each of the base unit 1, the terminal device 3, and the lighting equipment 5, However, there is a problem that the number of work increases and the construction takes time. The power supply unit to make the control power for operating the internal circuit of the terminal unit 3, because from the commercial power source AC ₁ making the control power, will the power supply unit of the terminal device 3 is relatively large, the terminal device 3 There is a problem that it is difficult to reduce the size. Furthermore, if the commercial power supply connected to the base unit 1 and the terminal unit 3 is a separate power supply, the terminal unit 3 cannot return to the base unit 1 unless the power supply of the terminal unit 3 is turned on first. However, there is a problem that a transmission error or the like occurs.

In order to solve this kind of problem, in recent years, as shown in FIG. 10, a transmission line 2 is constituted by a pair of signal lines, and a small line is transmitted from the base unit 1 to each terminal 3 via the transmission line 2. An illumination monitoring and control system that supplies power of about the same level as the power and transmits and receives signals between the base unit 1 and each terminal unit 3 is used. Here, the terminal 3 is connected to the signal line 2 from the base unit 1.
Since the power supply for operating the internal circuit is obtained by rectifying and smoothing the transmission signal constantly transmitted to the power supply, there is no need to connect to a commercial power supply, and the number of wirings can be reduced accordingly. Incidentally, the power supply to the lighting fixture 5 connected to the terminal unit 3 is carried from the commercial power source AC _1. However, in such a lighting monitoring and control system, since power is supplied from the base unit 1 to the plurality of terminals 3 via the transmission lines 2, the number of terminals 3 connected on the same transmission line 2 is reduced. When the number of terminals 3 to be connected is increased or when the transmission line 2 is lengthened (the impedance of the transmission line is increased), it is necessary to newly provide a repeater. However, there is a problem that it is necessary to secure a separate installation location and the cost increases.

Further, as an improvement over the system shown in FIG. 9, as shown in FIG. 11, after converting the voltage from the commercial power source AC ₁ to a desired voltage in the power supply unit of the lighting apparatus 5, the electric wire 6 A method is conceivable in which power is supplied from the power supply unit of the lighting apparatus 5 to the terminal device 3 via the power supply unit. This method is not often adopted in the lighting monitoring control system, but is often adopted in general communication systems. Since only the signal component is transmitted on the signal line 2 ″ used in this method, the number of terminals 3 to be connected can be increased.
However, there is a problem that the number of wirings is increased and the installation is troublesome as compared with the lighting monitoring and control system shown in (1), and if power is not supplied to the terminal 3 before the main unit 1, a transmission error occurs. And so on.

In addition, there are a so-called power line carrier system in which a signal component is superimposed on a power line, and a so-called wireless system in which a signal is transmitted using a wireless medium.
These methods still have many problems to realize at a low cost a lighting monitoring control system that performs reliable and high-speed (fast response speed) lighting control and monitoring of the lighting state, and at a low cost using a signal line. There is a demand for a system that operates reliably.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to easily increase the number of connected terminals for controlling a lighting load and to reliably perform monitoring control of the lighting load. It is an object of the present invention to provide a lighting monitoring control system which can be used.

[0008]

According to the first aspect of the present invention, there is provided a master unit for transmitting control data via a pair of signal lines and monitoring a lighting state of a lighting load. A plurality of terminals that output a control signal for controlling the lighting load based on control data, wherein each of the terminals is supplied with power from the parent device through the signal line, and a lighting fixture including the lighting load The terminal device is supplied with power from a master unit through a signal line and is supplied with power from a lighting device, so that the terminal device can be easily connected without using a repeater or the like. The number of terminals can be increased, and the number of wires can be reduced because the terminal does not need to be connected to a commercial power supply. If power is supplied to the terminal device from the master device, it is possible to check whether or not the operation of the terminal device 3 is normal regardless of whether power is supplied from the lighting fixture.

According to a second aspect of the present invention, in the first aspect of the present invention, each of the terminals receives the control data and outputs the control signal only when power is supplied from the luminaire. When no power is supplied from the terminal, the control signal is not output, so that the power consumption in the terminal device can be reduced and the cost can be reduced.

According to a third aspect of the present invention, in the second aspect of the present invention, the luminaire and the terminal are connected by a transmission line composed of a pair of signal lines, and the luminaire is connected via the transmission line. Since signals are transmitted to and received from the terminal device and power is supplied to the terminal device via the transmission line, the connection between the terminal device and the lighting fixture can be performed only by the transmission line. Therefore, the number of wirings can be reduced, and construction becomes easy.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIG. 1 shows a schematic configuration diagram of a lighting monitoring control system of the present embodiment. In this lighting monitoring and control system, a plurality of terminals 3 are connected to a transmission line 2 composed of a pair of signal lines from a base unit 1, and a lighting fixture 5 is connected to each terminal 3.

The master unit 1 is connected to the transmission line 2 by, for example, FIG.
A transmission signal Vs having a format as shown in FIGS. That is, the transmission signal Vs includes a start pulse ST indicating the start of signal transmission, mode data MD indicating a signal mode, address data AD, control data CD for controlling the lighting load of the lighting fixture 5, and a checksum for detecting a transmission error. A multi-pole (± 2) including a data return period WT for setting a return period of the data CS and return data from the terminal device 3
4V) time-division multiplexed signal, and data is transmitted by pulse width modulation. Note that the transmission signal Vs is not limited to the above-mentioned format signal, and may be any signal that can supply power of about a small force to each terminal device 3 and transmit control data.

When the address data transmitted by the transmission signal Vs received via the transmission line 2 matches the preset own address, each terminal 3 takes in the control data CD of the transmission signal Vs, In response to the signal return period WT of the transmission signal Vs, return data is returned as a current mode signal (a signal transmitted by short-circuiting the transmission lines 2 via a suitable low impedance).

The master unit 1 is set in correspondence with a terminal 3 to which a lighting device 5 to be controlled is connected in accordance with an operation of an operation unit such as a switch (not shown).
By generating control data CD for the terminal 3 for controlling the transmission, and transmitting the transmission signal Vs including the control data CD to the terminal 3 via the transmission line 2 by time division multiplexing.
The lighting load of each lighting fixture 5 is individually controlled to be turned on / off, and dimming is controlled. Here, the control data CD is two types of data that indicate on (lighting) and off (light off) when the terminal device 3 performs on / off control of the lighting load, and the terminal device 3 controls the lighting load. In the case of dimming control, the data is data indicating a dimming level.

The terminal 3 rectifies and smoothes a transmission signal Vs constantly transmitted to the transmission line 2 by a power supply unit 32 (see FIG. 3) described later to obtain a power supply for operating an internal circuit. . The lighting equipment 5 is connected to the commercial power supply AC ₁ via the power supply line 4.
Are connected to, the power supplied from the commercial power source AC _1, has a power source unit 51 to create the desired voltage for the operation of the lighting apparatus 5 itself (see FIG. 3), the power supply unit 51
Power supply to the terminal device 3 via the electric wire 6 (power supply)
Also do.

The terminal 3 in the conventional lighting monitoring and control system shown in FIG. 10 has a configuration as shown in FIG. 12 and transmits a transmission signal Vs constantly transmitted to the transmission line 2 to the power supply unit 32. Rectified and smoothed to obtain the operating power supply V _CC of the internal circuits such as the CPU 31 and the signal detection / reply section 33, and the control data transmitted via the transmission line 2 is sent to the signal detection / reply section 33. While detecting and returning the above-mentioned reply data, the CPU 31 outputs a control signal for controlling the lighting load based on the control data from the CPU 31 to the lighting fixture 5, thereby controlling the lighting load of the lighting fixture 5 or turning on / off the lighting load. Was off control. Note that a monitoring signal indicating the lighting state of the lighting load is input to the CPU 31 from the lighting equipment 5, and the CPU 31 returns reply data based on the monitoring signal from the signal detection / reply unit 33 to the master unit 1. It is made to let.

On the other hand, in the present illumination monitoring control system, the terminal device 3 has a configuration as shown in FIG. 3, and the transmission signal Vs constantly transmitted to the transmission line 2 is rectified and smoothed by the power supply unit 32. a power supply made by reduction, controls the power supply made from the commercial power source AC ₁ at the power supply unit 51 in the lighting apparatus 5, the combined added via diodes D _1, D ₂ for preventing backflow supply V _CC has been obtained.

The terminal 3 is provided with a power supply unit 5 of the lighting equipment 5.
The power supply voltage detection unit 34 has a power supply voltage detection unit 34 for detecting the first voltage is connected to the anode side of the diode D _2, the output signal of the power supply voltage detection unit 34 is adapted to be input to CPU31 By monitoring the power from the power supply unit 51 of the lighting fixture 5, it is determined whether to control the lighting fixture 5 or not. By the way, in the CPU 31, the parent device 1
And outputs a control signal based on the control data transmitted through the transmission line 2 and detected by the signal detection / reply unit 33,
This control signal is transmitted to the lighting fixture 5 via the control output interface unit 35. On the other hand, a monitoring signal output from the lighting fixture 5 corresponding to the lighting state of the lighting load is input to the CPU 31 via the monitoring input interface unit 36.

Here, the monitoring input interface unit 36
Has a configuration as shown in FIG. 4, for example, and the transistor Tr ₁ is turned on in response to a load state signal corresponding to the state of the lighting load supplied to the base of the transistor Tr ₁ via the resistor R ₃ in the lighting fixture 5. since on-off, the transistor Tr ₁ is only the light emitting diodes LED ₁ of the photocoupler PC ₁ emits light when on, resulting, which monitor signal above the phototransistor PT ₁ is turned on is at a low level , Usually low power consumption. On the other hand, the control output interface unit 35 has a configuration as shown in FIG. 5, and when the control signal from the CPU 31 supplied to the base of the transistor Tr ₂ via the resistor R ₆ is at a high level, the transistor Tr ₂ is turned off. On, and as a result, the light emitting diode LED of the photocoupler PC ₂ in the lighting fixture 5
₂ photo-transistor PT ₂ to emit light is turned on. The control signal supplied to the base of the transistor Tr ₂ phototransistor PT ₂ at a low level, is turned off. Therefore, it is can be taken out the voltage at the node between the phototransistor PT ₂ the collector and the pull-up resistor R ₄ as a dimming signal or on-off signal, usually many power consumption. Here, the terminal device 3 in the present lighting monitoring control system does not output a control signal when power is not supplied from the lighting fixture 5, so that power consumption can be reduced.

In this lighting monitoring and control system, power is supplied to each terminal unit 3 from the master unit 1 and the luminaire 5, so that the power supplied from the master unit 1 via the transmission line 2 is small. Thus, the number of terminals 3 that can be connected on the transmission line 2 can be increased and the transmission line 2 can be lengthened without newly installing a repeater or the like. Also,
Since there is no need to connect a commercial power supply to the terminal device 3, the number of wires can be reduced. Moreover, even when the power is not supplied from the lighting apparatus 5, the CPU 31 or the signal detection /
Since power is supplied to the reply section 33, the CPU 31 and the signal detection / reply section 33 are in an operating state.
Since a monitoring signal corresponding to that the lighting load is off is input to 1, it is possible to check whether the operation of the terminal device 3 is normal or not.

(Embodiment 2) FIG. 6 shows a schematic configuration diagram of a main part of a lighting monitoring control system of this embodiment. In this lighting monitoring control system, the terminal 3 and the lighting equipment 5 are connected by a transmission line 20 composed of a pair of signal lines in the first embodiment, and a control signal and a monitoring signal are transmitted through the transmission line 20. And power is supplied from the lighting device 5 to the terminal device 3, and a so-called two-wire system is adopted between the master device 1 and the terminal device 3 and between the terminal device 3 and the lighting device 5. It was done. For this reason, the number of wirings between the terminal device 3 and the lighting fixture 5 can be reduced as compared with the first embodiment, and construction is facilitated.

The lighting equipment 5 includes a power supply 51 ′ for generating a power supply for operating the lighting equipment 5 from a commercial power supply, and a control signal detecting part 53 for detecting a control signal from the terminal 3.
And a state detector 52 for detecting the lighting state of the lighting load. On the other hand, the terminal device 3 rectifies the signal transmitted from the lighting fixture 5 via the transmission line 20 by the signal detection and return unit 37 to a power source which rectifies and smoothes the transmission signal Vs constantly transmitted to the transmission line 2. parent power supply unit 32 'to make the control power V _CC by the power obtained is added via a diode D _3, the reply data and detects the control data from the base unit 1 on the basis of the transmission signal Vs by Machine 1
And a control signal based on the control data from the signal detection / reply unit 33 is transmitted to the lighting equipment 5 via the signal detection / reply unit 37 and the transmission line 20, and the signal detection / reply A CPU 31 for transmitting monitoring data based on the monitoring signal received from the lighting apparatus 5 via the unit 37 from the signal detection / reply unit 33 to the base unit 1.

A specific circuit of a main part of the configuration of FIG. 6 is a circuit as shown in FIG. 7, and the lighting fixture 5 turns on the switch SW in response to a state signal from the state detecting section 52, for example.
By turning off, the first power supply E ₁ and the second power supply E ₂
Either the diode (D ₅ or D ₆₎ and via the resistor R _B and supplies the terminal unit 3 and.
For this reason, by making the voltage values of the first power supply E ₁ and the second power supply E ₂ different, the potential at the point A changes, so that the potential at the point A and the potential of the reference voltage source V ₁ are different. the by comparing by the comparator CMP _1, the first power source E ₁ and can be any of the second power source E ₂ to determine which are connected, it is possible to take out the output of the comparator CMP ₁ as the monitoring signal You can. Here, lighting equipment 5
Voltage signal supplied from is supplied to the power supply unit 32 through the rectifier circuit DB and the diode D _3, such as a diode bridge terminal device 3.

On the other hand, the terminal 3 short-circuits the lines of the transmission line 20 via the resistor R _A to send a control signal for dimming control or on / off control of the lighting load to the lighting equipment. Transmit to 5. At this time, the resistor R _A and the rectifier circuit D
And parallel resistance of the impedance elements such as B, the potential at point B is changed by a resistance ratio of the resistor R _B. Therefore, the point B and the potential potential and a reference voltage source V ₂ comparator CMP
By comparing with _2, it is possible to take out the control signal as the output of CMP _2.

Thus, in this lighting monitoring control system,
By connecting the terminal 3 and the lighting equipment 5 with a transmission line 20 composed of a pair of signal lines, signals are transmitted and received between the terminal 3 and the lighting equipment 5 and the terminal equipment is connected to the lighting equipment 5. 3 (supply of electric power) can be performed. The first
If the power supply E ₁ and the second power supply E ₂ are both insulated power supplies that are insulated from each other and from the commercial power supply by, for example, a power transformer, there is no signal wraparound, and malfunction due to signal wraparound is prevented. can do.

[0026]

According to the first aspect of the present invention, a master unit for transmitting control data via a pair of signal lines and monitoring a lighting state of a lighting load, and a control for controlling the lighting load based on the control data. A plurality of terminals that output signals, and each of the terminals is supplied with power from the parent device through the signal line, and is supplied with power from a lighting device having the lighting load, so that a relay device or the like is not used. The number of terminals can be easily increased, and the number of wires can be reduced by eliminating the need to connect the terminal to a commercial power supply. Further, if power is supplied to the terminal from the master unit, it is possible to check whether or not the operation of the terminal 3 is normal regardless of whether or not power is supplied from the lighting fixture. is there.

According to a second aspect of the present invention, in the first aspect of the present invention, the terminal device receives the control data and outputs the control signal only when power is supplied from the lighting device. When no power is supplied from the terminal, the control signal is not output, so that the power consumption in the terminal device can be reduced and the cost can be reduced.

According to a third aspect of the present invention, in the second aspect of the present invention, the luminaire and the terminal are connected by a transmission line composed of a pair of signal lines, and the luminaire is connected via the transmission line. Since signals are transmitted to and received from the terminal device and power is supplied to the terminal device via the transmission line, the connection between the terminal device and the lighting fixture can be performed only by the transmission line. Therefore, the number of wirings can be reduced, and there is an effect that construction becomes easy.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a first embodiment.

FIG. 2 is an explanatory diagram of a transmission signal used in the embodiment.

FIG. 3 is a circuit block diagram of a main part of the above.

FIG. 4 is a schematic circuit diagram of a monitoring input interface unit according to the first embodiment;

FIG. 5 is a schematic circuit diagram of a control output interface unit according to the first embodiment;

FIG. 6 is a schematic configuration diagram of a main part showing a second embodiment.

FIG. 7 is a circuit configuration diagram of the above.

FIG. 8 is a schematic configuration diagram showing a conventional example.

FIG. 9 is an explanatory diagram of a power supply method according to the embodiment.

FIG. 10 is an explanatory diagram of another power supply method according to the embodiment.

FIG. 11 is an explanatory diagram of another power supply method according to the embodiment.

FIG. 12 is a schematic block diagram of a terminal used in the embodiment.

[Explanation of symbols]

1 Base unit 2 Transmission line 3 Terminal 4 Power line 5 Lighting equipment 6 Electric wire AC ₀ Commercial power supply AC ₁ Commercial power supply S _C control signal S _R monitoring signal

Claims (3)

[Claims] 1. A master unit for transmitting control data via a pair of signal lines and monitoring a lighting state of a lighting load, and a plurality of terminals for outputting a control signal for controlling the lighting load based on the control data. And each terminal device,
A lighting monitoring control system, wherein power is supplied from a master unit via the signal line and power is supplied from a lighting fixture having the lighting load. 2. The lighting monitoring control system according to claim 1, wherein each of the terminals receives the control data and outputs the control signal only when power is supplied from the lighting fixture. 3. The lighting device and the terminal device are connected by a transmission line composed of a pair of signal lines, and the lighting device transmits and receives signals to and from the terminal device via the transmission line. The lighting monitoring control system according to claim 2, wherein power is supplied to the terminal device via the transmission line.