JPH11275124A - Illuminating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively control illumination in a short time by correcting whole terminals in directions of respectively different logical addresses in one case among the three ones where the same logical address is given to the plural terminals, where an unnecessary logical address is given and where a necessary logical address is omitted. SOLUTION: When the logical address is erroneously given, a control part 1 designates the physical address to the whole connected terminals and transmits a signal for requesting that only the terminal having the same physical address returns the logical address. At the same time, the part 1 starts counting of a timer arranged inside, reads the data at the time of a replay from the terminal within a fixed time and preserves the physical address assigned to the signal inside. The operators of the terminals corresponding to the superimposed logical address and the superimposed physical address are urged to set the correct logical address again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device, and more particularly, to a signal from one operation unit.
The present invention relates to a lighting device that controls the amount of light of a light source connected to each of a plurality of terminals.

[0002]

2. Description of the Related Art Conventionally, a single control unit and a plurality of terminals are connected by a bus wiring, and a signal from the operation unit is used.
There has been an illumination device that controls the light amount of a light source connected to each of a plurality of terminals. In the lighting device, each of the terminals requires a control address, which is called a logical address. In order to individually assign this logical address to each terminal using a signal from the control unit, an address that is unique to the terminal and that cannot be changed is required, which is called a physical address. FIG. 1 shows a block diagram of an example of such a lighting device.

[0003] This configuration comprises a control unit 1 and terminals 21 to 23.
, Light sources 31 to 33, control unit 1 and a plurality of terminals 21 to
23, and a signal line 4 connecting the bus 23 with a bus line.
By transmitting a signal from the control unit 1 to the terminals 21 to 23 through the signal line 4, the light amounts of the light sources 31 to 33 are individually controlled.

In order to individually control the light amounts of the plurality of light sources 31 to 33, the terminals 21 to 23 have 01, 02,
03 different logical addresses need to be assigned. For this purpose, the terminal devices 21 to 23 specify the uniquely assigned physical addresses by the transmission signal from the control unit 1 and assign the logical addresses to each of them. The logical address assignment signal at this time may be any signal as long as the control data Y shown in FIG. 11 is used as the physical address, the command is used for writing the logical address, and the terminals 21 to 23 can process the assignment signal.

[0005] The transmission signal from the control unit 1 to the terminals 21 to 23 is, for example, a command and a terminal 21 as shown in FIG.
To control data 1 to 3 corresponding to the logical addresses assigned to each of the control data 1 to 23. In this case, the terminals 21 to 23 transmit the command and the control data 1 to 3, respectively. Shall be read. If control signals 1 to 3 are provided with light control amounts and commands for performing lighting in accordance with the control data (control light amounts) are assigned in the signals, the terminals 21 to 23 are provided.
Operates to turn on the light sources 31 to 33 according to the light intensity. Therefore, in the case of the signal format as shown in FIG. 9, the dimming amount can be set for all the terminals only by one transmission, but the length of one signal becomes long.

[0006] The transmission signal from the control unit 1 to the terminals 21 to 23 may be, for example, one in which control data is assigned by designating a logical address as shown in FIG.
In this case, a logical address is assigned to the control data A, a dimming light amount is assigned to the control data B, and each of the terminals 21 to 23 has a logical address set for itself and a logical address assigned to the control data A. Only when they match, the control data B (light intensity control) is read. Also, control data B
If a signal that performs lighting according to (light control amount) is assigned in the signal as a command, the terminal device designated with the logical address operates to turn on the light source according to the light control amount. That is, in the case of the signal format as shown in FIG. 10, transmission of the number of terminals (three times in this case) is required to write the dimming light amount to all the terminals, but one signal transmission is required. The length can be short.

In any case, the terminals 21 to 23 must receive the signal and operate as desired by the operator.
It is desirable that the devices 1 to 33 have necessary signal processing units and lighting circuit units. The control data may be arbitrarily set such as switching information for turning on / off, address information, etc., in addition to the light control amount of the light source. Further, the transmission signal from the control unit 1 is:
If the signal is such that the light amounts of the light sources 31 to 33 included in the terminal devices 21 to 23 can be individually controlled, FIG.
The signal format is not limited to the example shown in FIG.

[0008]

However, in the above conventional example, the following problems occur.

In the above-mentioned conventional example, a blinking running in which the light sources 31 to 33 are sequentially turned on in the order of light source 31, light source 32, and light source 33 by using a signal format as shown in FIG. When control is desired, the control unit 1 outputs a signal as shown in FIG.
Will be sent. The terminal devices 21 to 23 sequentially receive control data (light intensity control) corresponding to their own logical addresses from among the signals shown in FIG. 12 and turn on the light sources 31 to 33 in accordance with the control data. By such a series of signal operations, blinking traveling control in which the light sources 31 to 33 are sequentially turned on can be performed.

However, when a logical address is erroneously assigned for some reason, for example, in the case of construction or replacement of a terminal device after construction, that is, for example, the logical addresses 01, 02, 02 are assigned to the terminals 21 to 23. When the terminal device 23 has the same logical address as the terminal device 22, the terminal device 22 and the terminal device 23 operate in the same manner, and the light source 33 is operated by the operator. Cannot perform the desired lighting, resulting in a malfunction.

In order to correct the incorrectly assigned logical address, the operator needs to know the physical address of the terminal and the correct logical address. However, the control unit 1 is located at a remote location, and the operator visually checks the terminals 21 to 2.
3 and the light sources 31 to 33 cannot be operated as desired, or when a large number of terminals are connected, it takes much time to correctly reset the logical address. It is very troublesome with labor. If the physical address of the terminal having the duplicated logical address is unknown, the logical address cannot be correctly reset. If the physical address is not known, it is conceivable to remove the terminal and reset it from the physical address. However, this is very troublesome and is not preferable in construction. In particular, if the terminal is installed in a place where installation of the terminal is difficult, such as a bridge or a road, the operation of removing the terminal involves a great danger and is a problem in terms of safety. Of course, it is needless to say that the lighting control desired by the operator cannot be performed as it is.

Also, since the signal line is a bus line, if the signal line is broken, not only the terminal beyond the disconnection point as viewed from the control unit cannot receive signals, but also the terminal unit beyond the disconnection point. Cannot transmit a reply signal to the control unit. However, in the conventional lighting device, there is no means for detecting disconnection of the signal line from the control unit, and there is no other way than to determine the disconnection of the signal line by visually checking the lighting state of the light source of the terminal device beyond the disconnection point. Was. In such a case, for example, when the terminal is installed at a position invisible from the control unit, it is practically difficult to constantly monitor the disconnection of the signal line visually. However, it will not be possible to take immediate action.

The present invention has been made in view of all the above problems, and an object of the present invention is to provide a lighting device capable of efficiently performing a lighting control desired by an operator in a short time. .

[0014]

According to the first aspect of the present invention, there is provided a control unit for transmitting a driving signal, and a bus system for a control unit via a signal line. A plurality of connected terminals, and a light source connected to an output terminal of the terminal, wherein the terminal has a logical address for receiving a drive signal from the control unit, and receives the drive signal. When the same logical address is assigned to at least two or more terminals, when an unnecessary logical address is assigned to the terminals, a necessary logical address is assigned to the lighting device for controlling the light output of the light source. Is provided, in at least one of the three cases where the terminal is missing, all the terminals are provided with addressing and correcting means for correcting in directions having different logical addresses.

According to the second aspect of the present invention, the control unit includes:
It is characterized by reading and storing the logical address to be corrected among the logical addresses of the terminal.

According to the third aspect of the present invention, the control unit includes:
It is characterized by reading and storing all the logical addresses of the terminal.

According to the invention described in claim 4, the control unit includes:
It is characterized by detecting the presence or absence of a reply from the terminal device within a certain time.

According to a fifth aspect of the present invention, the address assignment and correction means is for manually correcting a logical address.

According to a sixth aspect of the present invention, there is provided a display device for displaying a logical address to be corrected among the logical addresses of the terminal.

According to a seventh aspect of the present invention, the address assignment and correction means automatically corrects the logical address.

According to an eighth aspect of the present invention, a disconnection detecting means for a signal line is provided.

[0022]

(Embodiment 1) FIG. 2 is a diagram illustrating the operation of a first embodiment according to the present invention, and FIG. 3 is a diagram illustrating a signal format. The block configuration diagram according to the present embodiment is substantially the same as the conventional example shown in FIG. 1, and only the operation is different from that of the conventional example. Omitted.

The operation will be briefly described below with reference to FIGS. When a logical address is incorrectly assigned to a plurality of terminals, the control unit 1 specifies a physical address for all connected terminals, and returns a logical address only to the terminal whose physical address matches. Is transmitted. At substantially the same time, the control section 1 starts counting of an internal timer. When the terminal returns a response to the control unit 1 within a predetermined time, the data is read and stored in the control unit 1, and the physical address assigned to the signal S1 is also stored in the control unit 1. If there is no reply from the terminal device within a certain time, nothing is saved.

The above-mentioned series of operations are performed in the same manner by sequentially designating the physical addresses to be assigned to the signal S1 (this is called scanning). After the scanning is completed, the stored logical addresses and physical addresses are saved. Then, the duplicated logical address and the physical address of the terminal corresponding to the duplicated logical address are displayed, and the operator is prompted to set the correct logical address.

As shown in FIG. 3, if the physical address is 5-byte hexadecimal data and it is known that the upper three bytes are common to all terminals, only the lower two bytes of the physical address are used. To scan. As shown in FIG. 2, the control unit 1 first sets the lower 2 bytes to 0000
h and the signal S1 and transmit this. The lower two bytes are stored internally. If a logical address is returned from any of the terminals connected to the signal line 4 within the predetermined time Y, the lower 2 bytes 0000h at that time
And the returned logical address are stored internally, and are not stored if there is no reply. Next, the lower 2 bytes are 000
1h and the signal S1, and this is transmitted. Similarly, if the logical address is returned within the fixed time Y, the lower 2 bytes 0001h and the returned logical address at that time are stored internally, and if there is no response, the data is not stored. This series of operations is repeated until the lower two bytes become FFFFh. When this operation is completed, the control unit 1 can recognize the physical addresses of all the terminals connected to the signal line 4. By displaying the duplicated logical address and the physical address of the terminal to which the duplicated logical address is assigned among all the stored logical addresses and physical addresses (lower 2 bytes), It is possible to urge the operator to reset the logical address to a correct one.

With the above configuration, the overlapping logical address can be easily corrected to a unique value. That is, for example, when a plurality of terminals are installed at a remote location from the control unit, or when it is difficult to confirm the number of the terminals, the terminals and the light source built therein may malfunction. Without visual confirmation that
Further, even when the physical address of the terminal having the duplicated logical address is not known, the control unit 1 can immediately correct the logical address to a correct value.

In the present embodiment, the signal format transmitted from the control unit 1 may be in any form, for example, not only the hexadecimal number of the data but also the decimal number. What is necessary is just to determine in advance with the terminal device. The number of bytes of the logical address and the physical address may be any number. Further, even if scanning is performed for all five bytes instead of the lower two bytes, there is no problem as long as the scanning includes a part necessary for recognition. Furthermore, the number of light sources included in the terminal device may be plural, and any number of terminal devices may be used.

(Embodiment 2) FIG. 4 is a diagram for explaining the operation of a second embodiment according to the present invention.

FIG. 1 is a block diagram showing the configuration of this embodiment.
Are similar to those of the first embodiment. The difference from the first embodiment is that correction is performed when a logical address is missing, and the configuration is the same as that of the first embodiment. Are denoted by the same reference numerals and description thereof is omitted.

That is, according to the present embodiment, when a logical address is erroneously assigned for some reason, for example, the terminal 2
If the logical addresses 03 are missing and assigned to the logical addresses 1 to 23, such as 01, 02, and 04, the control data (control data) corresponding to the logical address 04 is included in the signal from the control unit 1. This is to solve the problem that the terminal device 23 does not receive the signal from the control unit 1 and malfunctions because there is no light amount), and the terminal device 23 has the same configuration as the first embodiment. Are denoted by the same reference numerals and description thereof is omitted.

(Embodiment 3) FIG. 5 is a diagram for explaining the operation of a third embodiment according to the present invention.

FIG. 1 is a block diagram showing the configuration of the embodiment.
Are similar to those of the first embodiment, and the difference from the first embodiment resides in that the configuration is such that correction is made when a logical address is duplicated or missing, and is the same as that of the first embodiment. The description is omitted by giving the same reference numerals to the components.

That is, in this embodiment, if a logical address is incorrectly assigned for some reason, for example,
If the logical address 01 is duplicated and the logical addresses 02 and 03 are omitted and assigned to the logical device 01, 01 and 04, the terminal 2
2 has the same logical address as the terminal 21, so that the terminal 21 and the terminal 22 perform the same operation, and the control data (corresponding to the logical address 04 in the signal from the control unit 1) This is to solve the problem that the terminal device 23 does not receive the signal from the control unit 1 and malfunctions because there is no light control amount), and has the same configuration as that of the first embodiment. Are denoted by the same reference numerals and description thereof will be omitted.

(Embodiment 4) A fourth embodiment according to the present invention will be described.

FIG. 1 is a block diagram showing the configuration of this embodiment.
In the present embodiment, the operation of assigning a correct logical address to a terminal having a duplicate or missing logical address in the first to third embodiments is automatically performed. The description is omitted by assigning the same reference numerals to the same components.

In the first to third embodiments, the logical address that is duplicated or missing and the physical address of the terminal corresponding to the duplicated or missing are displayed to prompt the correction of the logical address. Therefore, the operator needs to manually perform the operation for assigning the correct logical address again manually. In addition, it is necessary to additionally provide a function for displaying necessary logical addresses and physical addresses. Therefore, in the present embodiment,
After the scanning operation, the physical address of the terminal whose logical address is duplicated or missing is specified, and a function of automatically giving the correct logical address to the terminal is added.

With this configuration, the logical address can be corrected more easily. The presence or absence of the means for displaying the logical address and the physical address may be either. If the means for displaying the logical address and the physical address is not provided, the size of the apparatus can be further reduced (Embodiment 5). 9 shows a fifth embodiment according to the present invention.

In the present embodiment, in the first to fourth embodiments, the disconnection of the signal line between each terminal as shown in FIG. 6 and the control unit 1 and the terminal as shown in FIG. And a disconnection detecting means for detecting a disconnection of the signal line between the first and fourth embodiments. The same reference numerals are given to the same components as those in the first to fourth embodiments, and description thereof will be omitted.

The operation will be briefly described below with reference to FIGS. First, the control unit 1 transmits a disconnection detection signal to the terminal device 21 to which the logical address 01 is assigned. In FIG. 6, since the terminal 21 is connected to the control unit 1, it can receive the disconnection detection signal. When receiving the disconnection detection signal, the terminal device 21 returns a signal to the control unit 1 to notify the control unit 1 that the signal has been received. Thereafter, the same operation is performed for the other terminals. In FIG. 6, the terminal 23 is disconnected from the control unit 1 and cannot receive the disconnection detection signal. Therefore,
A reply cannot be sent to the control unit 1 either. The control unit 1 detects that a reply has not been received, and displays the logical address assigned to the disconnection detection signal transmitted earlier than that. Then, by comparing this logical address with the terminal actually connected, it is possible to find the terminal connected to the farthest position among those capable of transmitting and receiving signals to and from the control unit 1. , Disconnection and the location of the disconnection can be recognized.

With the above-described configuration, the disconnection and the location of the disconnection can be easily detected without performing the operation of visually confirming the location of the disconnection. Further, regardless of the cases shown in FIGS. 6 and 7, disconnection between the control unit 1 and the terminal device can be detected. Furthermore, if the configuration is such that disconnection detection is performed periodically and a disconnection is detected and immediately notified, the trouble of disconnection confirmation can be reduced, and immediate action can be taken when disconnection occurs. Can be improved in safety.

The format of the disconnection detection signal may be in any form, and may be determined in advance between the control unit and the terminal. In the present embodiment, the disconnection detection signal specifies the logical address of the terminal, but may specify the physical address of the terminal.

[0042]

According to the first to fifth aspects of the present invention, it is possible to visually confirm that a terminal device and a light source incorporated therein are malfunctioning without giving a wrong logical address. Even if the physical address of a given terminal is not known, the terminal to which the wrong logical address is assigned can be quickly detected and reset to the correct logical address, so that the lighting control desired by the operator can be performed efficiently and in a short time. Can be provided.

According to the invention described in claim 6, in addition to the effect of the invention described in claim 1, a logical address to be corrected can be displayed, and the operator is prompted to set a correct logical address. Possible lighting devices can be provided.

According to the seventh aspect of the present invention, in addition to the effects of the first aspect of the present invention, it is possible to provide a lighting device capable of easily correcting a logical address.

According to the eighth aspect of the present invention, in addition to the effect of the first aspect of the present invention, not only the trouble of disconnection confirmation can be reduced, but also a prompt action can be taken when a disconnection occurs. The lighting device which can improve the safety of the lighting device can be provided.

[Brief description of the drawings]

FIG. 1 shows a block diagram according to the present invention.

FIG. 2 is an operation explanatory diagram of the first embodiment according to the present invention.

FIG. 3 shows a signal format according to the embodiment.

FIG. 4 is an operation explanatory view of a second embodiment according to the present invention.

FIG. 5 is an operation explanatory view of a third embodiment according to the present invention.

FIG. 6 is a block diagram for explaining a fifth embodiment according to the present invention;

FIG. 7 is another block diagram for explaining a fifth embodiment according to the present invention.

FIG. 8 is an operation explanatory view of a fifth embodiment according to the present invention.

FIG. 9 shows a first example of a signal format according to a conventional example of the present invention.
Here is an example.

FIG. 10 is a diagram showing a signal format according to a conventional example of the present invention.
Two examples are shown.

FIG. 11 shows an example of a logical address assignment signal according to a conventional example of the present invention.

FIG. 12 is an operation explanatory view according to a conventional example of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Control part 2 Terminal 3 Light source 4 Signal line

Claims (8)

[Claims] 1. A control unit for transmitting a drive signal, a plurality of terminals connected to the control unit via a signal line in a bus system, and a light source connected to an output terminal of the terminal. A lighting device, wherein the terminal device has a logical address for receiving a drive signal from the control unit, and controls the light output of the light source by receiving the drive signal; At least one of three cases: when a logical address is assigned to at least two or more of the terminals, when an unnecessary logical address is assigned to the terminal, and when a required logical address is missing. In that case,
An illumination device comprising: an addressing and correcting means for correcting all terminals to directions having different logical addresses. 2. The lighting device according to claim 1, wherein the control unit reads and stores a logical address to be corrected among the logical addresses of the terminal device. 3. The lighting device according to claim 1, wherein the control unit reads and stores all of the logical addresses of the terminal device. 4. The lighting device according to claim 1, wherein the control unit detects whether there is a reply from the terminal device within a predetermined time. 5. The lighting device according to claim 1, wherein the address assignment and correction means manually corrects a logical address. 6. The lighting device according to claim 1, further comprising display means for displaying a logical address to be corrected among the logical addresses of the terminal device. 7. The lighting device according to claim 1, wherein said address assignment correction means automatically corrects a logical address. 8. The lighting device according to claim 1, further comprising a disconnection detection unit for the signal line.