CN102098837B - Lighting control system - Google Patents

Abstract

The present invention provides a lighting control system, a lighting control system comprising: a plurality of lighting fixtures assigned individual logical addresses; and a controller controlling a desired lighting fixture using the logical address assigned to each lighting fixture; The controller includes: a storage unit that stores the logical address of the lighting fixture; and a transceiver unit that transmits a transmission signal including a request signal requesting the logical address to the lighting fixture and receives a return signal sent from the lighting fixture. ; After receiving the transmission signal, the lighting fixtures send a loopback signal after a standby time corresponding to the logical address assigned to their own equipment; the controller obtains a logical address, and stored in the storage unit.

Description

lighting control system

technical field

The present invention relates to lighting control systems.

Background technique

Conventionally, there has been a lighting control system including: a plurality of lighting fixtures each assigned a separate logical address; and a controller connected to the plurality of lighting fixtures via a transmission line; , to transmit a transmission signal including a logical address of the lighting fixture to be controlled, thereby performing control such as turning on, turning off, and changing the dimming level of the lighting fixture to which the logical address is assigned.

In this kind of lighting control system, it is necessary to pre-set the logical address assigned to each lighting fixture in the controller. The logical addresses of the lighting fixtures are grasped, and after the builder arranges the lighting fixtures according to the construction drawing showing the relationship between the logical addresses and the construction positions, the logical address of each lighting fixture is set to the controller using a remote controller or the like.

In this way, each lighting fixture only needs to be able to receive the transmission signal from the controller, so a relatively cheap CPU can be used, but management costs such as management of logical addresses assigned to the lighting fixtures, and affixing of seals that clearly indicate the logical addresses, etc. , The production of construction drawings and the confirmation of logical addresses during construction are more troublesome.

Therefore, as a method of presetting a logical address in the controller, for example, as described in Patent Document 1, a method has been proposed in which the controller outputs a request signal requesting a logical address to each lighting fixture, and each lighting fixture The appliance sends its own logical address to the controller according to the request signal, so that the logical addresses of all lighting appliances are set in the controller. By using this method, the builder only needs to operate the controller through the remote control, which greatly reduces the time and labor spent on construction.

[Patent Document 1] Japanese Patent Application Laid-Open No. 7-46258

However, if all lighting fixtures send logical addresses together according to the request signal from the controller, the signal including the logical address on the communication line may be destroyed or the waveform of the signal may be deformed, causing the controller to obtain a wrong logical address.

As a method of avoiding this problem, each lighting fixture performs carrier sense and transmits a logical address. However, in order to perform carrier sense, it is necessary to mount an expensive CPU on each lighting fixture, which raises the problem of high manufacturing cost.

As another avoidance method, it is also conceivable to install a remote control receiver on each lighting fixture and send a logical address according to an operation signal from the remote controller. However, if the remote control receiver is installed on all the lighting fixtures, the manufacturing cost will increase, and Since the builder is required to operate all the lighting fixtures with a remote controller, the scale of the lighting control system becomes larger. If the number of lighting fixtures increases, there is a problem that the time and labor required for construction will be very large.

Contents of the invention

The present invention has been made in view of the above problems, and an object of the present invention is to provide a low-cost lighting control system that reduces the trouble and time for setting a logical address on a controller.

In order to solve the above-mentioned technical problems, the invention of claim 1 is characterized in that it includes: a plurality of lighting fixtures assigned individual logical addresses; and a controller controlling a desired lighting fixture using the logical address assigned to each lighting fixture; The controller includes: a storage unit that stores the logical address of the lighting fixture; and a transceiver unit that transmits a transmission signal including a request signal requesting the logical address to the lighting fixture and receives a return signal sent from the lighting fixture. ; After receiving the transmission signal, each lighting fixture sends a loopback signal after a standby time corresponding to the logical address assigned to its own device; the controller obtains a logical address, and store it in the storage unit.

The invention according to Claim 2 is characterized in that, in the invention described in Claim 1, when the controller receives a feedback signal from the lighting fixture, it includes a logical address obtained from the feedback signal and makes the A transmission signal of a control command for turning on the lighting fixture is sent to the lighting fixture.

According to the invention of claim 1, since a plurality of lighting fixtures that have received the request signal send a loopback signal after a standby time based on a logical address assigned individually, each lighting fixture does not send a loopback signal at the same time, and the loopback can be reduced. Possibility of sending signals corrupted on communication lines. In addition, it is not necessary to install a special device such as a remote control receiver on each lighting fixture, and it is possible to provide a low-cost lighting control system.

According to the invention of claim 2, it is possible to visually confirm that the controller has acquired the lighting fixture of the logical address, and by turning on all the lighting fixtures, it can be confirmed that the controller has completed the acquisition of the logical address.

Description of drawings

FIG. 1 is a schematic block diagram showing the configuration of a lighting control system according to the present embodiment.

2 is a schematic block diagram showing the flow of communication signals in the lighting control system, (a) showing the flow of the transmission signal from the controller 1, and (b) showing the flow of the return signal from the lighting fixture 2.

FIG. 3 is a schematic diagram showing a state of receiving a feedback signal of the controller 1 in the lighting control system.

Symbol Description

1 controller

11 Control Department

12 storage department

13 Receiving Department

2 lighting fixtures

21 Control Department

22 storage department

23 Sending and receiving department

24 lighting circuit

L Communication line

S1 transmission signal

S2 loopback signal

specific embodiment

Next, an embodiment of the present invention will be described based on FIGS. 1 to 3 .

In the lighting control system of this embodiment, as shown in FIG. 1 , a plurality of lighting fixtures 2 ( 2 a .

The controller 1 includes a control unit 11 composed of a microcomputer that collectively controls the overall operation of the controller 1, a storage unit 12 composed of, for example, a volatile SRAM, and a communication line L that communicates with each lighting fixture 2 to communicate with each other. The sending and receiving unit 13 of the exchange.

In the storage unit 12, the logical address allocated to each lighting fixture 2 is written by the control unit 11, and the control unit 11 reads the logical address as necessary.

The transmitter/receiver 13 modulates a control signal from the control unit 11 and outputs it to the communication line L as a transmission signal, and demodulates a loopback signal input through the communication line L to output it to the control unit 11 . Here, as the transmission signal, there are various commands such as an address request command for requesting return of a logical address to each lighting fixture 2 , a control command for turning on and off each lighting fixture 2 , and changing a dimming level.

In addition, the controller 1 has an operation input unit (not shown) such as a remote controller and a remote control receiver, and the control unit 11 starts acquiring a logical address assigned to each connected lighting fixture 2 based on the operation input.

The lighting fixture 2 includes: a control unit 21, which is composed of a microcomputer that uniformly controls the overall operation of the lighting fixture 2; a storage unit 22, which is composed of a nonvolatile memory such as EEPROM (Electrically Erasable Programmable ROM); 23 , exchanging signals with the controller 1 via the communication line L; and a lighting circuit 24 , outputting lighting power to a light source composed of, for example, LEDs.

The logical address of the lighting fixture is stored in advance in the storage unit 22, and the control unit 21 reads it out as necessary. This logical address is set to a value that does not overlap among the respective lighting fixtures 2a...2n.

The transmitting and receiving unit 23 judges whether the logical address contained in the transmission signal received via the communication line L is targeted at its own logical address, and if its own logical address is targeted, outputs various commands contained in the transmission signal to the control unit. twenty one. In addition, the transmitting and receiving unit 23 transmits various information output from the control unit 21 and a logical address assigned to its own device.

Here, a method for the controller 1 to acquire the logical address of each lighting fixture 2 connected via the communication line L as an initial setting of the lighting fixture of this embodiment will be described.

First, after installing the controller 1 and each lighting fixture 2 , the user uses a remote controller (not shown) or the like to send a control signal for the controller 1 to start acquiring the logical address of each lighting fixture 2 to the controller 1 .

The control unit 11 of the controller 1 sends a transmission signal S1 to all lighting fixtures 2 based on the above-mentioned control signal, and the transmission signal S1 includes an address request command requesting to return the logical address of each lighting fixture 2 (refer to ( a)).

Each lighting fixture 2, upon receiving the transmission signal S1, sends back to the controller 1 a return signal S2 indicating the logical address assigned to the own device after a standby time corresponding to the logical address assigned to the own device has elapsed. Here, by setting the loopback signal S2 to a pulse wave with a pulse width of, for example, 5 ms, and setting the standby time of each lighting fixture 2 to, for example, a numerical value representing a logical address × 10 ms, the controller 1 can obtain the output signal from the received loopback signal S2. S2 acquires the logical address assigned to each lighting fixture 2 .

For example, if the logical addresses assigned to the lighting fixtures 2a, 2b, 2c, and 2d are respectively 23, 51, 7, and 122, the standby times of the lighting fixtures 2a, 2b, 2c, and 2d are 230ms, 510ms, 7ms, and 1220ms respectively. . Each lighting fixture 2a, 2b, 2c, 2d outputs the feedback signal S2 which consists of a pulse wave of 5 ms to the controller 1 after waiting for each standby time (refer FIG.2(b)).

Thus, as shown in FIG. 3 , after the controller 1 sends the transmission signal S1 including the address request command (t0 in FIG. 3 ), it receives a feedback signal consisting of a pulse wave of 5 ms at 70 ms, 230 ms, 510 ms, and 1220 ms. S2. The controller 1 can detect that the lighting fixture 2 to which the logical addresses 7, 23, 51, and 122 are assigned is connected based on the received time, and the control unit 11 causes the storage unit 12 to store 7, 23, 51, 122 value.

Afterwards, for example, if the predetermined time set in advance in the control unit 11 has elapsed after sending the transmission signal S1 including the address request command, it is assumed that the controller 1 has acquired all the logical addresses, and the collection of logical addresses is stopped, and according to The operation of the remote control or the like by the user performs control such as lighting and extinguishing of each lighting fixture 2 .

As a result, each lighting fixture 2 transmits a feedback signal S2 composed of a pulse wave after waiting for a different waiting time according to the transmission signal S1 including the address request command from the controller 1, so that the communication line L can be reduced. This includes the possibility that the controller 1 obtains a wrong logical address because the signal of the logical address is corrupted or the waveform of the signal is deformed. In addition, it is possible to provide a low-cost lighting control system that does not require installation of devices such as a remote control receiver on each lighting fixture 2 , reduces labor and time when setting a logical address to the controller 1 .

In addition, after the controller 1 transmits the transmission signal S1, each time it receives the loopback signal S2 composed of pulse waves, it can use the logical address obtained according to the receiving time of the loopback signal S2 as the control object, and transmit the signal including lighting. The transmission signal of the lighting control command of the appliance 2. Thereby, the controller 1 can visually confirm that the controller 1 has acquired the lighting fixture 2 of the logical address, and by turning on all the lighting fixtures 2, it can be confirmed that the controller 1 has completed the acquisition of the logical address.

In addition, through the operation as described above, the user can stop the collection of logical addresses by the controller 1 by operating the remote controller after confirming that all the lighting fixtures 2 are turned on.

In addition, in this embodiment, the loopback signal S2 is set as a pulse wave with a pulse width of 5 ms, and the standby time is set as a numerical value indicated by a logical address × 10 ms, but it is not limited to the above content, and it can be adjusted according to the scale of the lighting control system. and wiring to set appropriately. For example, instead of 5 ms, the pulse width of the pulse wave may be 10 ms, 20 ms, or the like.

Claims (2)

1. a Lighting Control Assembly, possesses: multiple ligthing paraphernalia, is assigned independent logical address; And controller, use the logical address distributing to each ligthing paraphernalia, control the ligthing paraphernalia of wishing;

Described controller has: storage part, stores the logical address of described ligthing paraphernalia; And receiving and transmitting part, described ligthing paraphernalia is sent to the signal transmission of the request signal comprising request logical address, and receive the backhaul signals sent from described ligthing paraphernalia;

Described each ligthing paraphernalia is after the described signal transmission of reception, and the value that the numerical value that the logical address distributing to equipment of itself to be multiplied by for described ligthing paraphernalia be common regulation obtains, as stand-by time, after described stand-by time, sends backhaul signals;

Described controller, according to time of reception when receiving described backhaul signals, obtains logical address, and is stored to described storage part.

2. Lighting Control Assembly according to claim 1, wherein,

If described controller receives the backhaul signals from described ligthing paraphernalia, then will comprise the logical address that obtains from this backhaul signals and make the signal transmission of the control command of described ligthing paraphernalia lighting send to described ligthing paraphernalia.