JP2022057360A - Communication system - Google Patents

Abstract

To provide a communication system that can reliably monitor the status of equipment from a remote location and extend the life of the equipment.SOLUTION: A lighting system 1 includes a plurality of lighting fixtures 3 connected by one power line L, and a control device 2 that controls the plurality of lighting fixtures 3 via the power line L. Individual identification information is given to each of the plurality of lighting fixtures 3. Then, the control device 2 has management information of the plurality of lighting fixtures 3, acquires state information of the plurality of lighting fixtures 3 via the power line L, and controls the plurality of lighting fixtures 3 on the basis of the state information and the management information.SELECTED DRAWING: Figure 1

Description

The present invention relates to a communication system including a plurality of devices connected by one communication line and a control device for controlling the plurality of devices via the communication line.

In a communication system including a plurality of devices and a control device for controlling a plurality of devices, when uniform control is performed from the control device, the entire system is forced to operate even for unnecessary devices, and unnecessary power consumption is required. It may be consumed or its life may be shorter than expected.

Specific examples of the above communication system include a lighting system installed in a road tunnel or the like. In this type of lighting system, a control method for adjusting the illuminance by the outdoor brightness is used. For example, in tunnels on general roads and highways, in addition to the basic lighting that is evenly installed in the tunnel, entrance lighting that corresponds to the dark adaptation of vision is installed. Such entrance lighting is controlled based on the external brightness of the outside to secure the required illuminance.

For example, Patent Document 1 describes that basic lighting, cloudy weather lighting, and fine weather lighting are arranged as lighting fixtures arranged in a tunnel. Basic lighting is installed in the tunnel at almost equal intervals, cloudy lighting is installed at the entrance and exit of the tunnel, and it is continuously lit in the daytime even in fine weather, and clear lighting is installed at the entrance and exit of the tunnel. It is stated that it is installed at the exit and is lit only in the daytime and in fine weather.

Further, the invention described in Patent Document 1 is composed of different circuits for basic lighting, cloudy weather lighting, and fine weather lighting, but in Patent Document 2, a lighting control device having a plurality of lighting fixtures is one. It is stated that some are connected by bus wiring.

Japanese Unexamined Patent Publication No. 2000-106282 Japanese Unexamined Patent Publication No. 2018-97933

By connecting multiple lighting fixtures with bus wiring, it is possible to reduce the number of wiring systems. Further, by using the dimmable LED lighting for the lighting equipment, it is possible to finely adjust the brightness, and it is also possible to illuminate with a brightness close to the entrance illumination curve.

However, since the system described in the patent document is uniformly controlled, the lighting fixture for cloudy weather is continuously lit not only in cloudy weather but also in fine weather, and the lighting fixture for clear sky lighting is used in fine weather. Since only the lamps are lit, the lighting time is biased, and the life of the luminaire is also biased. In addition, power consumption may be wasted. This problem is unavoidable as long as the lighting fixtures are connected by bus, as long as they are used by distinguishing between lighting for cloudy weather and lighting for fine weather.

Therefore, an object of the present invention is to provide a communication system capable of reliably monitoring the state of a device from a remote location and extending the life of the device.

The invention according to claim 1, which has been made to solve the above problems, comprises a plurality of devices connected by one communication line and a control device for controlling the plurality of devices via the communication line. Each of the plurality of devices is provided with individual identification information, the control device has management information of the plurality of devices, and the state of the plurality of devices is provided via the communication line. It is a communication system characterized by acquiring information and controlling the plurality of devices based on the state information and the management information.

According to the present invention, the control device has management information of a plurality of devices, and acquires status information of the plurality of devices via a communication line, and the plurality of devices are based on the status information and the management information. Since the control of the device, the status of the device can be reliably monitored remotely, and the life of the device can be extended.

It is a schematic block diagram of the communication system which concerns on 1st Embodiment of this invention. It is a functional block diagram of the control device shown in FIG. It is a functional block diagram of the lighting fixture shown in FIG. It is a flowchart of the monitoring operation of the control part shown in FIG. This is an example of management information. It is a flowchart of the operation when an interrupt occurs in the control part shown in FIG. It is a flowchart of the control for reducing the bias of the lighting time in the communication system shown in FIG. It is a flowchart of control for reducing the bias of lighting time in the communication system which concerns on 2nd Embodiment of this invention. It is a flowchart of control for reducing the bias of lighting time in the communication system which concerns on 3rd Embodiment of this invention.

(First Embodiment)
Hereinafter, the first embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 is a functional configuration diagram of a lighting system as a communication system according to the first embodiment of the present invention.

The lighting system 1 includes a control device 2 and a lighting fixture 3. The control device 2 and the lighting fixture 3 are connected by a bus wiring by a power line L. Then, power is supplied from the control device 2 to the lighting fixture 3 by the power line L, and various information to be described later is transmitted and received by the power line communication. That is, the first lighting and the second lighting are connected by a power supply line and a communication line (one communication line) of the same system. The lighting fixture 3 according to the present embodiment is installed in a road tunnel (indoors) and functions as tunnel lighting.

As shown in FIG. 2, the control device 2 includes an automatic dimming unit 21, a control unit 22, and a communication unit 23.

The automatic dimming unit 21 is provided near the entrance of the tunnel, includes a light receiving unit (not shown) that observes the outdoor brightness and outputs an observation signal, and determines the entrance illumination curve based on the observation signal from the light receiving unit. Then, the luminance adjustment information is output to the control unit 22 so as to match the luminance value of the entrance illumination curve to each luminaire 3.

The control unit 22 outputs control information including the luminance adjustment information output from the automatic dimming unit 21. Further, the control information includes existence confirmation information for confirming the existence of the ID assigned to each lighting fixture 3 and state confirmation information for requesting a reply of information regarding the state of the device. Further, the control unit 22 has management information of each lighting fixture 3. Details of the management information will be described later. That is, the control unit 22 functions as a control device for controlling the lighting fixture 3 (plurality of devices) via the power line L (communication line).

The communication unit 23 transmits the control information output by the control unit 22 via the power line L to the lighting fixture 3 by power line communication. In the present embodiment, the communication unit 23 will be described as performing power line communication with each lighting fixture 3, but may be wireless communication as long as it is communication by one communication path such as bus wiring (method). The communication method is not particularly limited. Needless to say, the power line L supplies power to the plurality of lighting fixtures 3 by means of power receiving equipment (not shown) or the like. The power receiving equipment or the like may be provided in the control device 2 or may be provided outside.

The lighting fixture 3 is a lighting fixture provided at a predetermined interval in a road tunnel as an indoor, and has A1 to A4 as basic lighting, B1 to B3 as the first entrance lighting, and C1 to C3 as the second entrance lighting. Have. The basic lighting is installed after A4, but it is omitted due to space limitations.

In this embodiment, there are two systems, B1 to B3 and C1 to C3, as entrance lighting. Conventionally, these lighting fixtures 3 have separate systems for sunny weather and cloudy weather (the installation position of the lighting fixture 3 is the same as the conventional one). That is, the first entrance lighting and the second entrance lighting are installed indoors and function as the first lighting and the second lighting whose lighting state changes according to the weather. In this embodiment, as will be described later, control by a fixed lighting pattern such as one system for fine weather and the other system for cloudy weather is not performed.

As shown in FIG. 2, the luminaire 3 includes a communication unit 31, a constant current control unit 32, an output monitoring unit 33, and an LED light source 34. In this embodiment, the same lighting fixture 3 is used as the lighting fixture 3, but since the basic lighting is always on, it does not have to have a communication function.

The communication unit 31 is connected to the control device 2 via the power line L. The communication unit 31 receives control information such as brightness adjustment information of the LED light source 34 from the control device 2. Further, individual identification information such as an ID is attached to the communication unit 31 in advance so that the communication unit 31 can be distinguished from the other lighting equipment 3 in communication with the control device 2.

The constant current control unit 32 is composed of circuits such as a rectifier circuit and a constant current drive circuit for controlling the LED light source 34 with a constant current. It is generally known that the light emitting diode constituting the LED light source 34 is driven by a constant current. The constant current control unit 32 receives AC power via the power line L (AC input), converts the AC power into DC, and converts the current (output current) for driving the light emitting diode of the LED light source 34 to a constant current. Generate and output. The constant current control unit 32 controls so that the current value is based on the luminance adjustment information received by the communication unit 31.

The output monitoring unit 33 is a sensing circuit added to the output circuit of the constant current control unit 32. This sensing circuit is generally composed of a resistance element. The monitoring result of the output monitoring unit 33 is output to the constant current control unit 32. Then, the constant current control unit 32 feedback-controls the operation of the constant current control unit 32 based on the detection result of the output monitoring unit 33. As a result, the LED light source 34 can be appropriately dimmed by the current value corresponding to the dimming degree (luminance to be adjusted) of the output current value of the constant current control unit 32.

As described above, the LED light source 34 uses a light emitting diode as a light source. The LED light source 34 is driven (light-emitting) by a drive current (output current) supplied from the constant current control unit 32. In the present embodiment, since each lighting fixture 3 has a communication function, individual dimming is possible, so that it is easy to adjust the brightness according to the entrance lighting curve, and the standard brightness is used with the minimum power. You will be satisfied with it. The light source does not have to be a light emitting diode as long as dimming control is possible.

Next, the operation of the control unit 2 in the lighting system 1 having the above-described configuration will be described with reference to FIGS. 4 to 7. FIG. 4 is a flowchart of the monitoring operation (normal operation) of the control unit 2.

First, the control unit 2 performs ID existence detection processing (step S11). This ID existence detection process transmits existence confirmation information in order to detect the existence or nonexistence of a range of numerical values that can be a preset ID. Then, it is determined whether or not there is a response to the existence confirmation information (step S12). If there is no response to the existence confirmation information (step S12; none), an abnormality is notified to a higher-level device such as a remote monitoring device (step S19).

On the other hand, if there is a response to the existence confirmation information (step S12; yes), the state confirmation information is transmitted to confirm the state of the lighting fixture 3 (step S13). Then, it is determined whether or not there is a response to the status confirmation information (step S14). That is, the state information of the lighting fixture 3 (plurality of devices) is acquired via the power line L (communication line). Examples of this state information include the presence / absence of a failure, the presence / absence of a sign of failure, the cumulative lighting time (operating time), and the like, in addition to the ID set in the lighting fixture 3 itself. If there is no response to the status confirmation information (step S14; none), an abnormality is notified to a higher-level device such as a remote monitoring device (step S19).

On the other hand, when there is a response to the status confirmation information (step S14; yes), the management information of the lighting fixture 3 and the response to the status confirmation information are collated and confirmed (step S15). As described above, the response to the state confirmation information includes the ID of the lighting fixture 3, the presence / absence of a failure such as being in a non-lighting state, the cumulative lighting time, and the like.

An example of management information is shown in FIG. As shown in FIG. 5, the management information includes the ID, whether the ID is mounted or not (whether the corresponding lighting fixture 3 is installed or not), and whether the corresponding lighting fixture 3 is the entrance lighting or the basic lighting. Etc. are included.

Then, it is confirmed whether or not it matches the existence information (step S16). The match with the existence information is to confirm whether the ID included in the response determined in step S14 matches the ID implemented in the management information. If it matches the existence information (step S16; match), the status is notified to the host device (step S17). Examples of the status to be notified include the presence / absence of a failure or failure prediction (presence / absence of a sign of failure), cumulative lighting time, and the like.

On the other hand, if it does not match the existence information (step S16; mismatch), the host device is notified (step S18). That is, it notifies that there is an error or the like in the management information or the setting information of the lighting fixture 3.

Next, the interrupt operation of the control unit 2 will be described with reference to the flowchart of FIG. The control unit normally performs the monitoring operation described in the flowchart of FIG. 4, but when performing dimming control, time synchronization control, special control, etc., which will be described later, an interrupt is generated and the operation is performed according to the flowchart of FIG. do. The following control is performed on the lighting fixture 3 having an ID whose existence information matches in step S16. That is, the lighting fixture 3 (plurality of devices) is controlled based on the state information and the management information.

First, it is determined whether or not monitoring is in progress (step S21). That is, it is determined whether or not an interrupt has been made. If monitoring is in progress, that is, if no interrupt is made (step S21; YES), this step is repeated. That is, the monitoring is continued.

On the other hand, when monitoring is not being performed, that is, when an interrupt is made (step S21; NO), dimming control is performed (step S22). In the dimming control, in order to adjust the brightness of the luminaire 3 so as to have an appropriate brightness based on the brightness adjustment information from the automatic dimming unit 21, the corresponding brightness adjustment information is provided for each luminaire 3. The including control information is generated and transmitted via the communication unit 23. Of course, since this control information includes an ID, each luminaire 3 can receive only its own control information. Further, in this dimming control, control (described later) for reducing the bias of the lighting time is also performed. That is, control is performed so as to make the operating time of the lighting fixture 3 (a plurality of devices) uniform. Details will be described later.

Next, time synchronization control is performed (step S23). The time synchronization control is to perform control to synchronize when the lighting fixture 3 has a timekeeping function. Specifically, time information is transmitted as control information in order to synchronize with the lighting fixture 3.

Next, special control is performed (step S24). The special control is a control such as initialization of the lighting fixture 3. The time synchronization control and the special control may be performed as needed and may not be performed every time.

Next, the control for reducing the bias of the lighting time described above will be described with reference to the flowchart of FIG. 7. The flowchart shown in FIG. 7 is executed by the control unit 22.

First, information indicating the outdoor brightness measured by the automatic dimming unit 21 is acquired (step S31), and it is determined whether or not the current weather is fine based on the observed (measured) outdoor brightness (step S32). For the determination of the weather, for example, a well-known method may be used in which a threshold value for outdoor brightness for determining that the weather is fine is set, and if the threshold value or more is equal to or greater than the threshold value, the weather is determined to be sunny.

When the current weather is fine (step S32; Yes), the basic lighting (A1 to A4), the first entrance lighting (B1 to B3), and the second entrance lighting (C1 to C3) are turned on (step S33). ). That is, in the case of fine weather, lighting belonging to each system of basic lighting (A1 to A4), first entrance lighting (B1 to B3), and second entrance lighting (C1 to C3) so that all lighting fixtures are turned on. Control information is transmitted so that the fixture 3 lights up. Regarding the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3), the dimming intensity is such that the brightness is along the entrance lighting curve in fine weather at the installation position of each lighting fixture 3. It is controlled to light up with.

If the current weather is not clear (step S32; No), it is determined whether or not the weather is cloudy (step S34). As for the determination of cloudy weather, the threshold value of outdoor brightness and the like may be set and determined in the same manner as in fine weather. When the current weather is cloudy (step S34; Yes), the number of cloudy weather up to the present is determined as a predetermined switching condition (step S35). The control unit 22 counts the number of times the cloudy weather is determined after the installation, and determines whether the cloudy weather this time is an even number or an odd number.

When the cloudy weather this time is an odd number (step S35; odd number), the basic lighting (A1 to A4) and the first entrance lighting (B1 to B3) are turned on (step S36). That is, control information is transmitted so that the lighting fixtures 3 belonging to the basic lighting (A1 to A4) and the first entrance lighting (B1 to B3) are turned on. At this time, the lighting fixture 3 belonging to the second entrance lighting (C1 to C3) is turned off. Therefore, the lighting fixture 3 belonging to the second entrance lighting transmits control information so as to turn off the light. Further, the first entrance lighting (B1 to B3) is controlled to be lit at the installation position of each lighting fixture 3 at a dimming intensity such that the brightness is along the entrance lighting curve in cloudy weather.

When the cloudy weather this time is an even number (step S35; even number), the basic lighting (A1 to A4) and the second entrance lighting (C1 to C3) are turned on (step S37). That is, control information is transmitted so that the lighting fixtures 3 belonging to the basic lighting (A1 to A4) and the second entrance lighting (C1 to C3) are turned on. At this time, the lighting fixture 3 belonging to the first entrance lighting (B1 to B3) is turned off. Therefore, the lighting fixture 3 belonging to the first entrance lighting transmits control information so as to turn off the lights. Further, the second entrance lighting (C1 to C3) is controlled to be lit at the installation position of each lighting fixture 3 at a dimming intensity such that the brightness is along the entrance lighting curve in cloudy weather.

As described above, in the case of cloudy weather, the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) are alternately switched and turned on according to the number of times of cloudy weather up to the present. That is, when the weather is fine, both the first entrance lighting (first lighting) and the second entrance lighting (second lighting) are turned on, and when the weather is cloudy, the first entrance lighting (first lighting) and the first One of the two entrance lights (second light) is turned on and the other is turned off.

If the current weather is not cloudy (step S34; No), the basic lighting is turned on (step S38). That is, the control information is transmitted so that the basic lights (A1 to A4) are turned on. At this time, the lighting fixtures 3 belonging to the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) are turned off. Therefore, control information is transmitted so that the lighting fixtures 3 belonging to the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) are turned off. This step S18 is a lighting process when the weather is neither sunny nor cloudy (for example, rainy weather).

According to the present embodiment, the lighting system 1 includes a plurality of lighting fixtures 3 connected by one power line L, and a control device 2 for controlling the plurality of lighting fixtures 3 via the power line L. Each of the plurality of lighting fixtures 3 is given an individual ID. Then, the control device 2 has management information of the plurality of lighting fixtures 3, acquires the state information of the plurality of lighting fixtures 3 via the power line L, and obtains the state information of the plurality of lighting fixtures 3 based on the state information and the management information. The appliance 3 is controlled. By doing so, the state monitoring of the luminaire 3 can be reliably performed remotely, and the life of the luminaire 3 can be extended.

Further, since the state information includes at least one of the presence / absence of a failure and the cumulative operation time, it is possible to quickly grasp the presence / absence of a failure. In addition, the time for maintenance such as replacement can be appropriately determined from the cumulative lighting time.

Further, the lighting system 1 includes basic lighting (A1 to A4) that is installed in the tunnel and always lights up, first entrance lighting (B1 to B3) that is installed in the tunnel and whose lighting state changes according to the weather. The second entrance lighting (C1 to C3) is provided, and the control unit 22 for turning on one of the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) and turning off the other is provided. ing. Then, the control unit 22 turns on both the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) when the weather is fine, and when the weather is cloudy and the number of cloudy weather is an odd number. , The first entrance lighting (B1 to B3) is turned on, and when the weather is cloudy and the number of cloudy weather is even, the first entrance lighting (B1 to B3) is turned on.

By configuring the lighting system 1 as described above, in the case of cloudy weather, the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) should be switched and used depending on the number of times of cloudy weather. Can be done. Therefore, the bias of the lighting time between the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) is reduced, and the lighting pattern is not fixed and the lighting is balanced. That is, since it is possible to control the operation time of the plurality of lighting fixtures 3 so as to be uniform, it is possible to extend the life of the lighting fixtures 3. Further, since the observation result of the automatic dimming unit 21 can be used, it is not necessary to install a new sensor or the like, and it can be realized at low cost.

Further, since the lighting fixture 3 is installed in the tunnel and the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) are installed near the entrance of the tunnel, they function as entrance lighting. Then, it can correspond to the dark adaptation of the visual sense.

Further, since the basic lighting (A1 to A4), the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) are connected by the power supply line and the communication line of the same system, they are connected by bus wiring. This eliminates the need for wiring for each system such as basic lighting, fine weather lighting, and cloudy weather lighting. Therefore, it is possible to simplify the wiring with one system, and it is possible to reduce the equipment cost and the construction time.

(Second Embodiment)
Next, the lighting system according to the second embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

The configuration of this embodiment is the same as that of the first embodiment, but the control for reducing the bias of the lighting time is different. The control for reducing the bias of the lighting time in the lighting system 1 according to the present embodiment will be described with reference to the flowchart of FIG.

In the flowchart of FIG. 8, step S35 is changed to step S35A. Step S35A determines the current date and time as a predetermined switching condition. Specifically, the day of the week is determined. When today's day of the week is Monday, Wednesday, Friday, or Sunday (step S35A; Monday, Wednesday, Friday, and Sunday), the basic lighting (A1 to A4) and the first entrance lighting (B1 to B3) are turned on (step S36). When today's day of the week is Tuesday, Thursday, or Saturday (step S35A; Tuesday, Thursday, Saturday), the basic lighting (A1 to A4) and the second entrance lighting (C1 to C3) are turned on (step S37). Of course, the system that is not lit is turned off. That is, the control unit 22 (lighting control unit) switches and lights the first entrance lighting (first lighting) and the second entrance lighting (second lighting) according to the current date and time.

It should be noted that the determination may be made not by the day of the week but by the date. For example, it may be determined whether today's date is an odd day (5th, 21st, etc.) or an even day (2nd, 18th, etc.). Alternatively, it may be a month (odd month, even month) or a time (odd hour, even hour).

According to the present embodiment, the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) are switched and turned on according to the current date and time (day of the week), so that the lighting for cloudy weather is turned on every day. The lighting pattern can be switched to reduce the bias of the lighting time between the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3), and the lighting pattern is not fixed and the lighting becomes balanced. It is possible to extend the life of the product. Further, for the determination of the day of the week or the like, the control device 2 may have a calendar or the date information may be acquired from the outside, so that it is easy to add a function.

(Third Embodiment)
Next, the lighting system according to the third embodiment of the present invention will be described with reference to FIG. The same parts as those in the first embodiment described above are designated by the same reference numerals, and the description thereof will be omitted.

The configuration of this embodiment is the same as that of the first embodiment, but the control for reducing the bias of the lighting time is different. The control for reducing the bias of the lighting time in the lighting system 1 according to the present embodiment will be described with reference to the flowchart of FIG.

In the flowchart of FIG. 9, step S35 is changed to step S35B. Step S35B determines the cumulative lighting time of the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) as predetermined switching conditions. Specifically, when the relationship of the cumulative lighting time of the first entrance lighting <the cumulative lighting time of the second entrance lighting is established, the first entrance lighting (B1 to B3) is turned on (step S36). When the relationship of the cumulative lighting time of the first entrance lighting> the cumulative lighting time of the second entrance lighting is established, the second entrance lighting (C1 to C3) is turned on (step S37). Of course, the system that is not lit is turned off. That is, the control unit 22 (lighting control unit) has the first entrance lighting (first lighting) and the first entrance lighting (first lighting) according to the cumulative lighting time of each of the first entrance lighting (first lighting) and the second entrance lighting (second lighting). It is turned on by switching to the 2 entrance lighting (2nd lighting).

As for the cumulative lighting time, the control unit 22 acquires the cumulative lighting time calculated by each lighting fixture 3 from the state information by communication. Alternatively, the time from when the control unit 22 gives an instruction to turn on the light until when the control unit 22 gives an instruction to turn off the light may be accumulated.

According to the present embodiment, the control unit 22 has the first entrance lighting (B1 to B3) and the first entrance lighting (B1 to B3) according to the cumulative lighting time of each of the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3). Since the two entrance lights (C1 to C3) are switched and turned on, the bias in the lighting time between the first entrance lighting (B1 to B3) and the second entrance lighting (C1 to C3) is reduced, and the lighting pattern is not fixed. The lighting is well-balanced, and the life of the luminaire 3 can be extended. In particular, since switching is performed according to the cumulative lighting time, it is possible to more accurately manage the bias of the lighting time.

In the above-described embodiment, the first entrance lighting and the second entrance lighting are configured as different lighting fixtures 3, but for example, as one lighting fixture, the first entrance lighting and the second entrance lighting are divided by dividing the light emitting region. It may function as entrance lighting.

Further, in the above-described embodiment, two systems of the first entrance lighting and the second entrance lighting are provided as the entrance lighting, but the present invention may be applied to these lightings as the basic lighting and the entrance lighting of one system. Then, among the basic lighting, the installation range of the entrance lighting may be turned off according to the weather as in the present embodiment. Of course, in order to satisfy the reference brightness such as the entrance illumination curve, the control device 2 transmits control information including the brightness adjustment information.

Alternatively, in the configuration shown in FIG. 1, the basic lighting may be controlled to be turned off in the case of cloudy weather. For example, in the case of the number of times of cloudy weather, the lighting that is turned off according to the number of times may be turned on (or turned off) in the order of the first entrance lighting, the second entrance lighting, and the basic lighting. At this time, the basic lighting to be turned off is only near the entrance of the tunnel or the like. In the configuration of FIG. 1, since the lighting is controlled by the communication from the control device 2, such control is possible. That is, even if there are three or more systems, one of them may function as the first lighting and the other one may function as the second lighting.

Further, in the above-described embodiment, the lighting system 1 has been described as an example of the communication system, but the present invention is not limited thereto. For example, it includes a plurality of devices connected by one communication line such as a street light and a traffic display board, and a control device for controlling a plurality of devices via the communication line, and the control device controls the plurality of devices. Applicable if it is a system. Further, the device is not limited to a lighting device or the like, and may be a device such as a computer terminal.

Further, the present invention is not limited to the above embodiment. That is, those skilled in the art can carry out various modifications according to conventionally known knowledge within a range that does not deviate from the gist of the present invention. As long as the configuration of the communication system of the present invention is still provided by such a modification, it is, of course, included in the category of the present invention.

1 Lighting system (communication system)
22 Control unit (control device)
3 Lighting equipment (multiple equipment)
A1 to A4 basic lighting B1 to B3 1st entrance lighting (1st lighting)
C1 to C3 2nd entrance lighting (2nd lighting)

Claims (8)

With multiple devices connected by one communication line,
A control device for controlling the plurality of devices via the communication line is provided.
Individual identification information is assigned to each of the plurality of devices.
The control device has management information of the plurality of devices, and acquires status information of the plurality of devices via the communication line, and the plurality of devices are based on the status information and the management information. A communication system characterized by controlling. The communication system according to claim 1, wherein the state information includes at least one of the presence / absence of a failure and the cumulative operating time. The communication system according to claim 1 or 2, wherein the control device is controlled so as to make the operation time of the plurality of devices uniform. The plurality of devices are configured as first lighting and second lighting whose lighting state changes according to the weather.
When the weather is fine, the control device turns on both the first lighting and the second lighting, and when the weather is cloudy, the first lighting and the second lighting are turned on according to predetermined switching conditions. By turning on one of them and turning off the other, the operation time of the first lighting and the second lighting is made uniform.
The communication system according to claim 3, wherein the communication system is characterized by the above. The communication system according to claim 4, wherein the control device switches between the first lighting and the second lighting according to the number of times of cloudy weather. The communication system according to claim 4, wherein the control device switches between the first lighting and the second lighting according to the current date and time. The communication system according to claim 4, wherein the control device switches between the first lighting and the second lighting according to the cumulative lighting time of each of the first lighting and the second lighting. The communication system according to any one of claims 4 to 7, wherein the first lighting and the second lighting are installed near an entrance in a tunnel.

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