KR101660486B1 - A method for synchronizing the time of a lighting apparatus and the apparatus for synchronizing the time thereof - Google Patents

Abstract

The present invention relates to a time synchronization method and a time synchronization apparatus for a lighting apparatus, in which a master lighting apparatus is connected to an access point (AP), a master lighting apparatus is connected to a master lighting apparatus A step of transmitting a master confirmation signal through an access point, a step of waiting for a predetermined period of time to confirm whether a master response signal is transmitted through an access point, The master lighting device transmits a time data signal through the access point if the master lighting device does not receive the data for a predetermined period of time.

Description

TECHNICAL FIELD The present invention relates to a time synchronization method and a time synchronization apparatus for a lighting apparatus,

The present invention relates to a method of synchronizing the time of a lighting device such as a streetlight and an apparatus used for such time synchronization.

FIG. 1 is a view showing a state of a conventional wireless remote control streetlight.

Conventional wireless remote control streetlights 50 are wirelessly connected to a network via an access point 10 (AP). A global positioning system (GPS) module and a service server 30 for controlling the streetlight 50 are provided at an upper end of the access point 10.

In the conventional wireless remote control streetlight system, the streetlights 50 are synchronized by the signal of the external satellite navigation device module 20 sprinkled through the Internet 40 and the internal time is adjusted. Then, the service server 30 controls each streetlight 50 on the basis of this time.

However, if the access point 10 is not stably connected to the Internet 40 in the conventional streetlight system, the streetlights 50 can not obtain the time information from the satellite navigation device module 160, .

This error of the internal time continues to accumulate over time, and as a result, causes a variation in the blink time of each street light 50. As a result, some of the streetlights were turned on before they were still dark, and other streetlights were already dark, but the lights did not turn on.

In addition, the problem of the time error causes a bigger problem when broadcasting using a speaker provided in the streetlight. That is, the internal time of the streetlight 50 does not coincide with each other, so that the time when the music or the like is broadcast through the speaker is different from each other. That is, broadcasting is started at a time difference from each other through the speakers provided with the streetlights 50 adjacent to each other, so that a phenomenon of ringing like an echo phenomenon occurs and the contents of the broadcast can not be accurately confirmed. And this echo phenomenon became more serious problem in the Middle East where broadcasting of Koran etc. is always started at a fixed time.

SUMMARY OF THE INVENTION The present invention is conceived to solve the problems as described above, and it is an object of the present invention to provide a method for stably synchronizing the time of a lighting apparatus even when a connection between a high-speed Internet access point and an access point is lost.

Another object of the present invention is to provide a time synchronization method of a lighting apparatus that can synchronize the respective lighting apparatuses using time data of a slave lighting apparatus even when an abnormality occurs in a master lighting apparatus that sends time data signals.

It is another object of the present invention to provide a time synchronization method of a lighting apparatus capable of synchronizing all the times of illumination devices in a group held at the same access point even when only one satellite navigation device module is provided.

It is also an object of the present invention to provide a time synchronization method of a lighting apparatus capable of synchronizing time synchronization between slave lighting apparatuses even if the master lighting apparatus is not connected to the access point.

In order to accomplish the above object, the present invention provides a method of controlling a master lighting device, the method comprising: connecting a master lighting device to an access point (AP); Transmitting a master confirmation signal through the access point to determine whether the master lighting apparatus has another master lighting apparatus; Waiting for a predetermined period of time to confirm whether the master lighting device is transmitting a master response signal through the access point; And transmitting the time data signal through the access point when the master lighting apparatus does not receive the master response signal for a predetermined period of time. Provides a synchronization method.

Also, the time data signal is a time data signal generated from a global positioning system (GPS) module.

In addition, if the master lighting device does not receive the master response signal for a predetermined period of time, after the master lighting device transmits time data through the access point, Confirming that no time data signal is generated from the time data signal; The master lighting device sending an internal time request signal to slave lighting devices via the access point; The master lighting device receiving an internal time signal of each of the slave lighting devices via the access point; The master illumination device obtaining an arithmetic mean value of internal times of the slave illumination devices; The master lighting device modifying the internal time of the master lighting device using the arithmetic average value and transmitting a time data signal based on the internal time to the access point Provides a synchronization method.

The present invention also relates to a method of controlling a master lighting device, the method comprising: connecting a master lighting device to an access point (AP); Transmitting a master confirmation signal through the access point to determine whether the master lighting apparatus has another master lighting apparatus; Waiting for a predetermined period of time to confirm whether the master lighting device is transmitting a master response signal through the access point; And when the master lighting device receives the master response signal within a predetermined period of time, indicating that the master lighting device has another master lighting device and emitting a replacement request signal Time synchronization method.

The present invention also provides a method of controlling a master lighting apparatus, comprising: receiving a master confirmation signal through an access point; And transmitting the master response signal to the master lighting device through the access point.

The present invention also provides a method of controlling a slave lighting apparatus, the method comprising: receiving a time data signal transmitted from a slave lighting apparatus through an access point; The slave lighting apparatus compares the time data signal with an internal time to check whether the time difference is within a predetermined error range; And updating the internal time of the slave lighting apparatus using the time data signal if the time difference is out of a predetermined error range. to provide.

The present invention also provides a method of controlling a slave lighting device, the method comprising: receiving an internal time request signal from the master lighting device via an access point; And transmitting the internal time signal of the slave illumination device to the slave lighting device through the access point.

The present invention also relates to a method for controlling a master lighting device, comprising the steps of: a master lighting device transmitting a time data signal through the access point; The slave lighting device receiving the time data signal via the access point; The slave lighting apparatus compares the time data signal with an internal time to check whether the time difference is within a predetermined error range; And updating the internal time of the slave lighting apparatus using the time data signal if the time difference is out of a predetermined error range. to provide.

Also, the time data signal is a time data signal generated from a global positioning system (GPS) module.

Further, the present invention provides a method of controlling a slave lighting apparatus, comprising: confirming that a time data signal transmitted from a master lighting apparatus through an access point is not received for a predetermined period of time; The slave lighting device transmitting its priority through the access point; The slave lighting device receiving the priority of another slave lighting device through the access point; Confirming that the slave lighting apparatus has a priority of its own priority; If the priority of the slave lighting apparatus is the highest priority, setting the slave lighting apparatus as a master slave lighting apparatus; The master slave lighting device sending an internal time request signal to the remaining slave lighting devices via the access point; The master slave lighting device receiving an internal time signal of each of the slave lighting devices via the access point; The master slave illumination device obtaining an arithmetic mean value of internal times of the slave illumination devices; And modifying an internal time of the master lighting apparatus using the arithmetic average value and transmitting a time data signal based on the internal time to the access point Provides a synchronization method.

Further, the present invention provides a method of controlling a slave lighting apparatus, comprising: confirming that a time data signal transmitted from a master lighting apparatus through an access point is not received for a predetermined period of time; Transmitting a master occupancy signal to the slave lighting apparatus, the master occupancy signal informing that the master occupancy signal is to become a master; Comparing the master occupancy signal received by the slave lighting apparatus with the master occupancy signal transmitted and setting itself as a master slave lighting apparatus when the transmitted master occupancy signal is faster; The master slave lighting device sending an internal time request signal to the remaining slave lighting devices via the access point; The master slave lighting device receiving an internal time signal of each of the slave lighting devices via the access point; The master slave illumination device obtaining an arithmetic mean value of internal times of the slave illumination devices; And modifying an internal time of the master lighting apparatus using the arithmetic average value and transmitting a time data signal based on the internal time to the access point Provides a synchronization method.

Further, the present invention provides a time synchronization method of a lighting apparatus, which synchronizes time of broadcasting using a speaker provided in the lighting apparatus.

Further, the present invention provides a lighting apparatus comprising: an illumination unit that emits light to the outside; A speaker unit for emitting sound to the outside; A wireless transceiver for supporting a wireless connection with an access point; A satellite navigation device module for generating a time data signal; An internal time unit for generating an internal time signal; And a control unit receiving information from the wireless transceiver unit, the GPS unit, and the internal time unit and adjusting an operation of the illumination unit and the speaker unit.

A master-slave display unit for indicating whether the master or slave is in the master or slave state; A replacement request signal display portion displayed when the master response signal is confirmed; And a time data signal display unit for displaying whether or not the time data signal is normally generated.

Further, the present invention provides a lighting apparatus comprising: an illumination unit that emits light to the outside; A speaker unit for emitting sound to the outside; A wireless transceiver for supporting a wireless connection with an access point; An internal time unit for generating an internal time signal; And a control unit receiving the information from the wireless transceiver and the internal time unit and adjusting the operation of the illumination unit and the speaker unit.

A master-slave display unit for indicating whether the master or slave is in the master or slave state; And a time data signal display unit for displaying whether or not the time data signal is normally received.

According to a time synchronization method and a time synchronization apparatus of a lighting apparatus according to a preferred embodiment of the present invention, the following effects can be obtained.

First, even when the internet connection through the access point is unstable, the time between the lighting devices can be always synchronized.

Second, the satellite navigation apparatus module is not provided in all lighting apparatuses, and the time data can always be kept up to date even if it is provided only in the master lighting apparatus. Therefore, it is possible to synchronize the time of all the lighting devices connected to the same access point with only one satellite navigation device module, thereby reducing the cost.

Third, even when an error occurs in the satellite navigation device module of the master illumination device, the internal time can be received from the slave illumination devices, arithmetically averaged, and the time of the master illumination device can be adjusted to a value closest to the current time. Therefore, there is an effect that time synchronization can always be achieved between lighting apparatuses in the same network.

Fourth, even when the network connection between the master lighting apparatus and the access point is unstable, time synchronization within the network can be maintained through exchange of internal time data between the slave lighting apparatuses.

FIG. 1 is a view showing a state of a conventional wireless remote control streetlight.
FIG. 2 is a view schematically showing a lighting device system according to a preferred embodiment of the present invention.
FIG. 3 is a view showing an internal configuration of a slave lighting apparatus according to a preferred embodiment of the present invention.
FIG. 4 is a view showing an internal configuration of a master lighting apparatus according to a preferred embodiment of the present invention.
FIG. 5 is a side view of a lighting apparatus according to a preferred embodiment of the present invention.
FIG. 6 is a front view of the lower portion of the slave lighting apparatus.
7 is a front view of the lower portion of the master lighting device.
FIG. 8 is a flowchart illustrating a process of performing time synchronization by a master illumination device according to a preferred embodiment of the present invention.
FIG. 9 is a flowchart showing an example of a process of operating a slave lighting apparatus according to a preferred embodiment of the present invention.
10 is a flowchart showing another example of a process of operating a slave lighting apparatus according to a preferred embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and are herein described in detail. It should be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

FIG. 2 is a view schematically showing a lighting device system according to a preferred embodiment of the present invention.

The illumination device according to the preferred embodiment of the present invention may be composed of a master illumination device 100 and a slave illumination device 200. The master lighting apparatus 100 and the slave lighting apparatus 200 may be wirelessly connected to an access point 10.

The master lighting apparatus 100 according to the preferred embodiment of the present invention is an illumination apparatus having a satellite navigation apparatus module 160 therein and emits a time data signal required for each lighting apparatus to perform synchronization . The slave lighting apparatus 200 is a lighting apparatus that achieves synchronization by using a time data signal transmitted from the master lighting apparatus 100. Accordingly, in the present invention, even when the access point 10 is not maintained in the Internet and the network, synchronization of all the lighting apparatuses connected in the network can be achieved by using the time data signal outputted from the master lighting apparatus 100 .

FIG. 3 is a view showing an internal configuration of a slave lighting apparatus according to a preferred embodiment of the present invention.

The slave lighting apparatus 200 according to the preferred embodiment of the present invention includes a controller 210, a speaker 220, an illuminator 230, a real time clock 240, a wireless transceiver 250 ). ≪ / RTI >

The wireless transceiver unit 250 provides a wireless connection channel with the access point 10 to transmit a signal generated by the controller 210 and to transmit a signal received from the access point 10 to the controller 210 Can be performed. The internal time unit 240 may count the current time of the lighting apparatus.

The control unit 210 may control the operation of the illumination unit 230 and the speaker unit 220 based on signals transmitted from the wireless transceiver unit 250 and the internal time unit 240. [ The lighting unit 220 may use a light emitting device composed of an LED (Light Emitting Diode) to improve energy efficiency.

FIG. 4 is a view showing an internal configuration of a master lighting apparatus according to a preferred embodiment of the present invention.

The master lighting apparatus 100 may further include a satellite navigation apparatus module 160 that generates a time data signal in comparison with the slave lighting apparatus 200. Accordingly, the time data signal generated from the GPS module 160 can be transmitted to the access point 10 via the wireless transceiver 150, so that the time of other slave lighting devices 200 can be accurately maintained at all times .

FIG. 5 is a side view of a lighting apparatus according to a preferred embodiment of the present invention, FIG. 6 is a front view of a lower portion of a slave lighting apparatus, and FIG. 7 is a front view of a lower portion of a master lighting apparatus.

Referring to FIG. 6, an illumination unit 230 may be provided at a lower center of the slave illumination device 200. The speaker unit 220 may be provided on both sides of the illumination unit 230 along the longitudinal direction.

Display devices including a control unit 210 and LEDs may be provided at one end of the slave illumination device 200. [ The control unit 210 and the display devices are covered with a transparent cover so that they can be visually recognized from the outside.

The display devices may include a master-slave display unit 260 and a time data signal display unit 270, and may be fabricated as LEDs.

The master-slave display unit 260 may be a device that indicates whether the master lighting apparatus 100 exists in a group and whether or not the master lighting apparatus 100 is a master-slave lighting apparatus. For example, if there is a master lighting device 100 among the lighting devices connected to one access point 10, the master-slave display 260 may turn on in red. If the master lighting apparatus 100 is not in the network, the master-slave display unit 260 may be turned off. Also, when the slave lighting apparatus 200 is set as the master slave lighting apparatus in the process described below, the corresponding master-slave display unit 260 may be turned on in green.

The time data signal display unit 270 may indicate whether or not the time data signal is normally received from the access point 10, and may turn red when the time data signal is normally received. When the master slave lighting apparatus is set as a master slave lighting apparatus according to a process to be described later, the time data signal display unit 270 may be turned on in green.

However, other colors may be used to indicate normal operation or signal reception, not limited to green or red lighting.

FIG. 7 is a front view of a lower portion of a master lighting apparatus according to a preferred embodiment of the present invention.

The illumination unit 130 may be positioned at the center of the lower portion of the master illumination apparatus 100 according to the preferred embodiment of the present invention and the speaker unit 120 may be provided along both sides of the illumination unit 130 .

At the end of the master illumination apparatus 100, a display unit including a controller 110 and LEDs may be provided.

The display device may be composed of three LEDs, and the master display part 170 may turn green when the master lighting device 100 connected to one access point 10 has only one of its own. However, if there is another master lighting device 100 already connected to the access point 10 to be connected, it may be illuminated in red to inform the user of the replacement request.

The time data signal display unit 180 can display whether the time data signal is normally generated from the master illumination apparatus 100. [ When the time data signal is normally generated from the satellite navigation device module 160 of the master lighting apparatus 100, the time data signal display unit 180 may glow green. However, when any abnormality occurs in the GPS module 160 and the time data signal is not normally generated, the time data signal display unit 180 may be illuminated in red. When the time data based on the arithmetic mean described below is transmitted, the temporary time data signal display unit 190 may be turned on in green. Therefore, the user checks the master display unit 170, the time data signal display unit 180, and the temporary time data signal display unit 190, which are the display devices of the master lighting apparatus 100, You can check whether there is.

FIG. 8 is a flowchart illustrating a process of performing time synchronization by a master illumination device according to a preferred embodiment of the present invention.

The master lighting apparatus 100 according to the preferred embodiment of the present invention may be connected to the access point 10. (S8-1) When the master lighting apparatus 100 is connected to the access point 10 When wirelessly connected, the master lighting apparatus 100 may perform a process of transmitting a master confirmation signal to the access point 10 in order to check whether another master lighting apparatus exists in the access point 10. (S8 -2) In this process, if there is another master lighting apparatus 100 already connected, it can receive a master confirmation signal and transmit a master response signal, which is a response signal thereto, to the access point 10.

The master lighting apparatus 100 may wait for a predetermined time to check whether a master response signal is received through the access point 10. (S8-3) Here, the predetermined time may be a signal through the access point 10 An appropriate time can be selected in consideration of the transmission speed, and for example, 5 seconds or 10 seconds can be selected and selected.

If a master response signal is received from another master lighting apparatus through the access point 10, the master lighting apparatus 100 may perform the step of indicating that there is another master lighting apparatus (S8-4) This step may be performed through a process of changing the color of the master display unit 170 to red as described above. Accordingly, the user who intends to install the master lighting apparatus 100 can confirm that the master display unit 170 composed of LEDs changes its light to red, and can change the lighting apparatus to be installed to the slave lighting apparatus 200.

In addition, the master lighting apparatus 100 according to the preferred embodiment of the present invention can send a replacement request signal through the access point 10. (S8-5)

If the master lighting device 100 fails to receive a master response signal from another master lighting device through the access point 10, the master lighting device 100 recognizes that there is no other master lighting device in one access point 10, It is possible to transmit the time data signal generated from the slave lighting apparatuses 160 to the access point 10. (S8-6) In other words, it is possible to recognize that the slave lighting apparatus 200 is the only master lighting apparatus in the network, Time data signal.

Next, the master lighting apparatus 100 according to the preferred embodiment of the present invention can perform a process of confirming whether a master confirmation signal has been received (S8-7). That is, it is checked whether another master lighting device exists in the network Process can be performed.

If the master illumination device 100 receives the master confirmation signal, the master illumination device 100 may transmit the master response signal to the network through the access point 10. (S8-8) May be removed in the network by receiving a master confirmation signal and displaying on master display 170 that another master lighting device is present and signaling a replacement request.

 In the case where the master confirmation signal is not received, the master lighting apparatus 100 according to the preferred embodiment of the present invention can check whether the time data signal is normally generated from the satellite navigation apparatus module 160 (S8 -9) If the time data signal is normally generated, the step of transmitting the time data signal to the access point 10 (S8-6) can be repeated.

However, if it is confirmed that the time data signal is not normally generated from the satellite navigation device module 160, the master illumination device 100 transmits an internal time request signal to acquire internal time information of the slave illumination devices 200 (S8-10). Upon reception of the internal time request signal, the slave lighting apparatus 200 reads time information from its internal time unit 240 and transmits internal time information to the master lighting apparatus 100 Lt; / RTI >

The master lighting apparatus 100 may perform the process of calculating the arithmetic mean of the received internal times after receiving the internal times thus transmitted (S8-11) (S8-12). For example, When the time information of 1:20 pm and 1:30 pm is obtained from the slave lighting apparatuses 200, it is possible to calculate 1:25 by arithmetic averaging.

Using the arithmetic mean value, the master lighting apparatus 100 can modify the internal time of the internal time unit 140 of the master lighting apparatus 100 (S8-13). Then, (S8-14). The satellite navigation apparatus module 160 of the master lighting apparatus 100 may then transmit the time data signal to the satellite navigation apparatus module 160 It is possible to calculate the time data value closest to the accurate time data value and to achieve time synchronization with the remaining lighting devices in the network based on the calculated time data value.

FIG. 9 is a flowchart showing an example of a process of operating a slave lighting apparatus according to a preferred embodiment of the present invention.

The slave lighting apparatus 200 according to the preferred embodiment of the present invention can check whether the time data signal is normally received. (S9-1) If the time data signal is normally received, (S9-2). In this case, the error range may be determined based on the internal time of the illumination device and the time data to be transmitted An arbitrary value may be selected as a value which is considered to be necessary to appropriately control the internal time since the difference in time extracted from the signal becomes too large. For example, about one second may be selected.

If the difference between the time data signal and the internal time is within the error range, the internal time of the slave illumination device 200 can be maintained and the time count can be performed. (S9-3) However, If the absolute value of the time difference exceeds the error range, the internal time may be updated using the time data signal received from the master lighting apparatus 100. (S9-5) In other words, If the received time is 2:50 and the internal time is 2:49, the internal time of the slave lighting apparatus 200 may be modified to 2:50.

Then, the slave lighting apparatus 200 according to the preferred embodiment of the present invention can check whether it has received the internal time request signal. (S9-4) The process of the present flowchart is terminated, and the process of counting the internal time while continuously receiving the time data signal may be performed. However, when receiving the internal time request signal from the master lighting apparatus 100, the slave lighting apparatus 200 reads the internal time in the internal time unit 240 and transmits the internal time through the access point 10 (S9-6)

It may not be possible to transmit an instantaneous time data signal to the access point 10 from the master lighting apparatus 100 according to the preferred embodiment of the present invention. This may be the case where an error occurs in the satellite navigation apparatus module 160 of the master lighting apparatus 100 or when the connection between the master lighting apparatus 100 and the access point 10 becomes unstable and is disconnected.

The master lighting apparatus 100 according to the preferred embodiment of the present invention sends an internal time request signal to the slave lighting apparatus 200 and outputs the internal time request signal to the slave lighting apparatus 200. [ Lt; / RTI > Therefore, the sum of the internal times of the slave lighting apparatuses 200 can be arithmetically averaged according to the above-described method, and the time data signal can be continuously transmitted to the access point 10 based on the arithmetic average. However, when the wireless connection between the master lighting apparatus 100 and the access point 10 is interrupted, the master lighting apparatus 100 can neither transmit the internal time request signal nor transmit the time data signal.

In this case, the slave lighting apparatus 200 according to the preferred embodiment of the present invention can transmit its own priority signal to maintain continuous synchronization within the network (S9-7). Then, And may receive a priority signal of another slave lighting apparatus (S9-8).

And then comparing the priorities of the other slave lighting apparatuses that are received next with the priorities of the other slave lighting apparatuses to determine whether they are the slave lighting apparatuses having the highest priority (S9-9).

If it is determined that the internal time request signal is not received, the process proceeds to step S9-4. In step S9-4, if it is determined that the internal time request signal is received, (S9-10). Then, the internal time request signal is transmitted to the other slave lighting devices (S9-11), and the internal time signals of the other slave lighting devices can be received . (S9-12)

The master slave lighting apparatus calculates the average time value by performing arithmetic mean calculation based on the received internal times. (S9-13) When the master slave lighting apparatus calculates the average time value, The internal time is corrected (S9-14), and counting is performed based on the counted time, thereby transmitting the time data signal to the access point 10. (S9-15) Thus, when an error occurs in the master lighting apparatus 100 There is an effect that the time synchronization between the slave lighting apparatuses 200 can be continuously maintained even when no connection is established in the network.

10 is a flowchart showing another example of a process of operating a slave lighting apparatus according to a preferred embodiment of the present invention.

First, the slave lighting apparatus 200 according to the preferred embodiment of the present invention can check whether a time data signal is received (S10-1). If the time data signal is normally received, The absolute value of the difference between the extracted time and the internal time of the internal time unit 240 of the slave lighting apparatus 200 is obtained and it is checked whether the value is within the error range. (S10-4). However, if the difference between the time data signal and the internal time deviates from the error range, the slave < RTI ID = 0.0 > The lighting apparatus 200 may be able to perform the step of updating the internal time of the internal time unit 240 using the time information extracted from the time data signal. The apparatus 200 can always maintain an accurate time.

Next, the slave lighting apparatus 200 according to the preferred embodiment of the present invention can receive the internal time request signal (S10-5). In this step, upon receiving the internal time request signal, The slave lighting apparatus 200 according to the preferred embodiment of the present invention may transmit its own internal time through the access point 10. (S10-7)

The slave lighting apparatus 200 according to the preferred embodiment of the present invention may also confirm that the time data signal is not received. In this case, the slave lighting apparatus 200 may transmit the master occupancy signal to the access point 10. (S10-8)

In step S10-9, it is determined whether the master occupancy signal received from the other slave lighting apparatus is the signal with the highest transmission time of its master occupancy signal. The slave lighting apparatus 200 may set itself as a master slave lighting apparatus in step S 10-10. Accordingly, even if an error occurs in the master lighting apparatus 100, Either one may replace the role of the master lighting device 100.

To this end, the slave lighting apparatus 200 set as the master slave lighting apparatus can transmit the internal time request signal (S10-11). Then, it is possible to receive the internal time signal from the other slave lighting apparatuses 200. (S10-12) Accordingly, the arithmetic mean (S10-13) is advanced using the received internal time signal and the slave lighting apparatus 200 (S 10 - 14) to transmit the time data signal for time synchronization of all the lighting devices in the network to the access point 10 (S 10 - 15).

The difference between the embodiment shown in FIG. 9 and the embodiment shown in FIG. 10 is that the priority order of the slave lighting apparatuses 200 is set to be set to the master slave lighting apparatuses from the order of priority, According to the example, there is a difference in that the slave lighting apparatus that has transmitted the master transmission signal to become the master without priority among the slave lighting apparatuses 200 is set as the master slave lighting apparatus. Accordingly, the user can appropriately adopt any one of the above-mentioned two methods, and can select a configuration method most suitable for the installation environment.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. And changes may be made without departing from the spirit and scope of the invention.

10: Access point
20: External satellite navigation device module
30: service server
40: Internet
50: streetlight
100: master lighting device
110:
120: speaker unit
130:
140: internal time unit
150: Wireless transmission /
160: Satellite navigation device module
170: Master display section
180: Time data signal display section
190: Temporary time data signal display section
200: Slave lighting device
210:
220: Speaker
230:
240: internal time portion
250: wireless transmitting /
260: master-slave display unit
270: Time data signal display section
The internal time unit 240,

Claims (16)

Connecting a master lighting device to an access point (AP);
Transmitting a master confirmation signal through the access point to determine whether the master lighting apparatus has another master lighting apparatus;
Waiting for a predetermined period of time to confirm whether the master lighting device is transmitting a master response signal through the access point;
When the master lighting device does not receive the master response signal for a predetermined period of time, the master lighting device transmits a time data signal through the access point,
The time data signal is a time data signal generated from a global positioning system (GPS) module,
After the master lighting apparatus transmits time data through the access point when the master lighting apparatus does not receive the master response signal for a predetermined period of time,
Confirming that the master lighting device does not generate a time data signal from the satellite navigation device module;
The master lighting device sending an internal time request signal to slave lighting devices via the access point;
The master lighting device receiving an internal time signal of each of the slave lighting devices via the access point;
The master illumination device obtaining an arithmetic mean value of internal times of the slave illumination devices; And
The master lighting device modifying the internal time of the master lighting device using the arithmetic average value and transmitting a time data signal based on the internal time to the access point How to synchronize.
delete delete The method according to claim 1,
After the master lighting apparatus waits for a predetermined period of time to confirm whether the master response signal is transmitted through the access point,
The master lighting apparatus displays the master lighting apparatus as having an external master lighting apparatus and sends a replacement request signal of the master lighting apparatus through the access point when the master lighting apparatus receives the master response signal within a predetermined time period The method comprising the steps of:
delete The method according to claim 1,
Receiving the time data signal transmitted from the master lighting apparatus via the access point, after the master lighting apparatus transmits the time data signal through the access point;
The slave lighting apparatus compares the time data signal with an internal time to check whether the time difference is within a predetermined error range;
And updating the internal time of the slave illumination device using the time data signal if the time difference is outside a predetermined error range.
The method according to claim 1,
After the master lighting device sends an internal time request signal to the slave lighting devices via the access point,
The slave lighting device receiving an internal time request signal from the master lighting device via the access point;
And transmitting the internal time signal of the slave illumination device to the slave lighting device through the access point.
delete delete The method according to claim 1,
Before the master lighting device sends an internal time request signal to the slave lighting devices via the access point,
When the slave lighting apparatus confirms that the time data signal transmitted from the master lighting apparatus through the access point is not received for a predetermined period of time,
The slave lighting device transmitting its priority through the access point;
The slave lighting device receiving the priority of another slave lighting device through the access point;
Confirming that the slave lighting apparatus has a priority of its own priority;
If the priority of the slave lighting apparatus is the highest priority, setting the slave lighting apparatus as a master slave lighting apparatus;
The master slave lighting device sending an internal time request signal to the remaining slave lighting devices via the access point;
The master slave lighting device receiving an internal time signal of each of the slave lighting devices via the access point;
The master slave illumination device obtaining an arithmetic mean value of internal times of the slave illumination devices;
And modifying an internal time of the master lighting apparatus using the arithmetic average value and transmitting a time data signal based on the internal time to the access point How to synchronize.
The method according to claim 1,
Before the master lighting device sends an internal time request signal to the slave lighting devices via the access point,
When the slave lighting apparatus confirms that the time data signal transmitted from the master lighting apparatus through the access point is not received for a predetermined period of time,
Transmitting to the access point a master occupancy signal indicating that the slave lighting apparatus is to become a master;
Receiving the master occupancy signal of the remaining slave lighting apparatus through the access point;
The slave lighting apparatus compares the master occupancy signal of the remaining slave lighting apparatus received by the slave lighting apparatus with the master occupancy signal sent by the slave lighting apparatus, and if the master occupancy signal transmitted by the slave lighting apparatus is faster, Setting the device;
The master slave lighting device sending an internal time request signal to the remaining slave lighting devices via the access point;
The master slave lighting device receiving an internal time signal of each of the slave lighting devices via the access point;
The master slave illumination device obtaining an arithmetic mean value of internal times of the slave illumination devices;
And modifying an internal time of the master lighting apparatus using the arithmetic average value and transmitting a time data signal based on the internal time to the access point How to synchronize.
A method of synchronizing the time of broadcasting using a speaker provided in the lighting apparatus by using the method of any one of claims 1, 4, 6, 7, 10, and 11 Wherein the time-synchronizing method of the illuminating device is characterized in that:
An apparatus for synchronizing time of a master lighting apparatus and a slave lighting apparatus, the master lighting apparatus and the slave lighting apparatus each comprising:
An illumination unit for emitting light to the outside;
A speaker unit for emitting sound to the outside;
A wireless transceiver for supporting a wireless connection with an access point;
A satellite navigation device module for generating a time data signal;
An internal time unit for generating an internal time signal;
And a control unit receiving information from the wireless transceiver unit, the GPS unit, and the internal time unit and controlling operation of the illumination unit and the speaker unit,
The master lighting apparatus transmits a master confirmation signal through an access point to check whether another master lighting apparatus exists, and when the master lighting apparatus does not receive a master response signal corresponding to the master confirmation signal for a predetermined period of time ,
The master lighting device transmits a time data signal through the access point,
When the time data signal is not generated from the satellite navigation device module,
When the master lighting device transmits an internal time request signal to the slave lighting devices via the access point and the master lighting device receives the internal time signals of each of the slave lighting devices via the access point,
The master lighting device corrects the internal time of the master lighting device by using the arithmetic average value after the master lighting device obtains an arithmetic mean value of the internal time of the slave lighting devices, And transmits the result to the access point.
14. The method of claim 13,
A master-slave display unit for indicating whether the master or slave is in the master or slave state;
A replacement request signal display portion displayed when the master response signal is confirmed;
And a time data signal display unit for displaying whether or not a time data signal is normally generated.
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