TWI516171B - Sensible dimmer system and method for using the same - Google Patents

Description

Inductive dimming system and dimming method thereof

The present invention relates to a dimming system, and more particularly to an inductive dimming system, and a dimming method thereof.

In recent years, energy conservation and carbon reduction have become the goal pursued by the public, and various industrial technologies have also used this as a development goal.

For example, in the past parking lots, lighting equipment is usually turned on all day to ensure a good view of the user. In order to achieve the goal of energy saving and carbon reduction, a lighting system with sensing function has been introduced on the market today, which can turn on lighting when sensing the presence of a person or a car, thereby reducing power waste.

The above lighting system mainly comprises separate sensing devices and lighting devices. The sensing devices and the lighting devices are respectively arranged in different areas in the parking lot, and are connected by wires. Therefore, when the parking lot is too large, or the number of sensing devices and lighting devices is too large, there is a problem that wiring is not easy. Moreover, once the wire is too much and the wiring is difficult, the labor cost of construction and maintenance is indirectly caused.

Furthermore, the existing lighting system usually has a dip switch on the sensing device or the lighting device, and the setting between the sensing device and the lighting device is adjusted by the adjustment of the dip switch. Group correspondence. However, the sensing device and the lighting device have a fixed volume, so the number of dip switches on the device cannot be increased without limitation, and therefore, when the manager needs too many combinations, the existing lighting system cannot satisfy the management. The needs of the people. For example, if only four sets of dip switches are provided on a lighting device, the manager cannot allow the lighting device to simultaneously correspond to five sensing devices. In other words, the flexibility of the prior art for group setting is quite insufficient.

The main object of the present invention is to provide an inductive dimming system and a dimming method thereof, which can wirelessly emit a dimming command after sensing an external change, and the dimming device wirelessly receives the dimming command, and then The content of the dimming command dims the luminaire.

Another main object of the present invention is to provide an inductive dimming system and a dimming method thereof, which are respectively disposed in an inductive device and a dimming device, whereby the manager can use the radio frequency technology to disconnect the system. When the power is turned on, the set values are respectively written into the sensing device and the dimming device, and the sensing device and the dimming device are activated according to the set value after the power is turned on.

A further main object of the present invention is to provide an inductive dimming system and a dimming method thereof, wherein the sensing device and the dimming device are grouped by the content of the set value, thereby allowing the dimming device to accept the same The dimming commands issued by the sensing devices in the group, and the dimming commands issued by the sensing devices in different groups are discarded.

To achieve the above object, the present invention provides a dimming system including at least one sensing device and at least one dimming device, wherein the dimming device is coupled to a luminaire. The sensing device and the dimming device respectively have a radio frequency module, and the administrator can wirelessly access the first through an access device. The set value and the second set value are respectively written into the RF module in the sensing device and the dimming device. After the dimming system is powered on, the sensing device and the dimming device respectively read the respective set values from the RF module. When the sensing device senses an external change, a dimming command is generated according to the first set value and is sent out. The dimming device wirelessly receives the dimming command, and determines whether it is a dimming command in the group according to the second set value. If so, the dimming device dims the luminaire according to the content of the dimming command.

The effect of the present invention over the prior art is that the sensing device and the dimming device wirelessly transmit the dimming command, so that when the system has multiple sensing devices and multiple dimming devices, complicated wiring troubles can be eliminated. . Moreover, since there is no wiring problem, the sensing device can be placed at a position where it is easier to sense an external change, thereby obtaining an optimum sensing effect.

The system is provided with a radio frequency module in each of the sensing device and the dimming device. By the characteristics of the radio frequency, when the system is powered off, the manager can still set the value through a wireless access device, such as an RFID reader. Write into the sensing device and the dimming device. In this way, the administrator does not need to start the system when setting the sensing device and the dimming device, which is quite convenient. Furthermore, by means of the radio frequency module recording the set value, the group to which the sensing device and the dimming device belong can be set arbitrarily and quickly, thereby solving the settable combination when the traditional dip switch is used to set the group. Limited by the number of finger switches, there is no flexibility.

1, 60~69‧‧‧ sensing device

11‧‧‧First Micro Control Unit

12‧‧‧First RF Module

13‧‧‧Sensor module

14‧‧‧First power module

15‧‧‧ data transmission module

16‧‧‧Environment Sensing Module

2, 70~74‧‧‧ dimming device

21‧‧‧Second micro control unit

22‧‧‧Second RF Module

23‧‧‧Second power module

24‧‧‧ Data receiving module

25‧‧‧ dimming module

3, 80~84‧‧‧ lamps

41‧‧‧Configuration area

42‧‧‧Access equipment

43‧‧‧Power

44‧‧‧Pedestrians

51‧‧‧First group

52‧‧‧Second group

53‧‧‧ third group

54‧‧‧fourth group

6‧‧‧Power line

C1‧‧‧ dimming instructions

S1‧‧‧ first set value

S2‧‧‧ second set value

S10~S28‧‧‧Steps

The first figure is a schematic diagram of a dimming system of a first preferred embodiment of the present invention.

The second figure is a schematic diagram of a group branch of the first preferred embodiment of the creation.

The third figure is a block diagram of the sensing device of the first preferred embodiment of the creation.

The fourth figure is a block diagram of the dimming device of the first preferred embodiment of the present invention.

The fifth figure is a dimming flow chart of the first preferred embodiment of the creation.

The sixth figure is a schematic diagram of the first operation of dimming according to the first preferred embodiment of the present invention.

The seventh figure is a schematic diagram of the second operation of dimming according to the first preferred embodiment of the present invention.

Figure 8 is a block diagram of a dimming system of a second preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION A preferred embodiment of the present invention will be described in detail with reference to the drawings.

Referring first to the first figure, a schematic diagram of a dimming system of a first preferred embodiment of the present invention is shown. The present invention mainly discloses an inductive dimming system (hereinafter referred to as the dimming system), and the dimming system is composed of at least one sensing device 1, at least one dimming device 2 and at least one lamp 3. The at least one sensing device 1 is wirelessly connected to the at least one dimming device 2, and the at least one dimming device 2 is physically connected to the at least one luminaire 3. More specifically, each of the dimming devices 2 is connected to one or more of the lamps 3, respectively.

The main technical means of the present invention is that when each of the sensing devices 1 senses an external change, a dimming command (such as the dimming command C1 shown in the third figure) is issued to the outside. After receiving the dimming command C1, each of the dimming devices 2 determines whether or not the corresponding dimming operation is to be performed on the lamp 3 connected thereto in accordance with the content of the dimming command C1. This creation adopts the wireless transmission of the dimming command C1, thereby eliminating the wiring difficulties caused by the physical connection between the conventional sensing device and the dimming device.

In the present creation, each dimming device 2 within the effective transmission range of the sensing device A can receive the dimming command C1 issued by the sensing device A. This embodiment is mainly By the division of the groups, each dimming device 2 determines whether or not the dimming command C1 is to be executed. It is worth mentioning that if a dimming device 2 only controls a single lamp 3, the dimming device 2 can be directly packaged inside the casing (not shown) of the lamp 3. Therefore, when installing the dimming system, the constructor only needs to provide each of the sensing device 1 and each of the lamps 3, and does not need to separately provide each of the dimming devices 2, and does not need to process each of the dimming devices 2 and each of the dimming devices 2 The connection line between the lamps 3. Therefore, considerable construction costs can be saved.

Referring to the second figure, a schematic diagram of a group branch of a first preferred embodiment of the present invention is shown. The second figure discloses a plurality of sensing devices 60-69, a plurality of dimming devices 70-74, and a plurality of lamps 80-84, wherein each of the dimming devices 70-74 is connected to each of the lamps 80-84. The sensing devices 60-69, the dimming devices 70-74 and the lamps 80-84 are mainly disposed in a configuration area 41, such as a parking lot, so that pedestrians (such as pedestrians 44 shown in FIG. 6) or cars can enter and exit. When it is sensed, its position is sensed and the fixture at the corresponding position is adjusted.

In this embodiment, the sensing devices 60, 61 and the dimming devices 70, 71, 74 are divided into a first group 51; the sensing devices 62, 63, 64 and the dimming devices 71, 72 are divided into a second group 52; The sensing devices 65, 66 and the dimming devices 72, 73 are divided into a third group 53; the sensing devices 67, 68, 69 and the dimming devices 73, 74 are divided into a fourth group 54.

When the sensing device 60 or 61 belonging to the first group 51 issues the dimming command C1, the dimming devices 70, 71, 74 in the same group can receive the dimming command C1, and according to the dimming command C1 The content of the lamps 80, 81, 84 dimming action. The remaining dimming devices 72, 73 and the sensing devices 60, 61 belong to different groups, so even if the dimming command C1 is received, the operation of the dimming command C1 is not performed.

For another example, when the sensing device 67, 68 or 69 belonging to the fourth group 54 issues the dimming command C1, the dimming devices 73, 74 in the same group can receive the dimming command C1, and according to the adjustment The contents of the optical command C1 perform dimming operations on the lamps 83 and 84. The remaining dimming devices 70, 71, 72 cannot receive the dimming command C1 or discard the dimming command C1 after receiving the dimming command C1.

It is to be noted that the sensing devices 60-69 and the dimming devices 70-74 may be one-to-one, one-to-many, many-to-one or many-to-many combinations, and are not limited. In this embodiment, the dimming device 70 belongs to the first group 51, so only the dimming command C1 of the first group 51 can be processed; and if the dimming device 72 belongs to the second group 52 at the same time. And the third group 53, so that the sensing devices 62-64 in the second group 52 and the dimming commands C1 emitted by the sensing devices 65-66 in the third group can be processed simultaneously. The division end of the above group depends on the actual needs of the manager and should not be limited to those described in the examples.

Referring to the third and fourth figures, respectively, a block diagram of a sensing device and a block diagram of a dimming device according to a first preferred embodiment of the present invention. The sensing device 1 includes a first micro control unit 11, a first RF module 12, a sensing module 13, a first power module 14, and a data transmitting module 15. The first micro control unit 11 is electrically connected to the first RF module 12, the sensing module 13, the first power module 14, and a data sending module 15, and controls the modules 12-15. .

The first RF module 12 is a radio frequency chip or a radio frequency tag that can record radio frequency identification (RFID) information. The administrator of the dimming system can use an access device 42 to set a first set value S1, such as a radio frequency reader (RFID reader) or near field communication (Near Field Communication, NFC) functions of electronic devices, etc. When the first After the setting value S1 is set on the access device 42, the first set value S1 can be wirelessly written into the first RF module 12 by the transmission of the RF signal. It is worth mentioning that, according to the radio frequency signal itself, the characteristics of the data and the power can be entrained at the same time, and the access device 42 can write the first set value S1 even if the sensing device 1 is powered off. The first RF module 12. In other words, the administrator can write the first set value S1 into the sensing device 1 at any time, or modify the first set value S1 that has been written in the sensing device 1, which is quite convenient.

The sensing device 1 is connected to the commercial power source 43 through the first power module 14 to obtain the electric energy required for the operation of the sensing device 1. When the sensing device 1 is powered on, the first micro control unit 11 automatically reads the first RF module 12 to obtain the first set value S1 written in advance to complete the setting of the sensing device 1. action.

The sensing module 13 can be, for example, an infrared sensing module or a microwave radar sensing module, and is not limited. The sensing module 13 is configured to sense external changes, such as when the sensing system is disposed in the parking lot, that is, the sensing module 13 senses the passage of the pedestrian 44 or the automobile. When the external change is sensed, the sensing module 13 triggers the first micro control unit 11, and the first micro control unit 11 generates the dimming command C1 according to the content of the first set value S1.

In this embodiment, the first set value S1 may mainly include a group number, a dimming brightness, a dimming time, and the like to which the sensing device 1 belongs. In other words, the dimming command C1 includes parameters such as the above-mentioned group number, dimming brightness, and dimming time, in addition to the control command that requires the dimming device 2 to adjust the lamp 3. Thereby, the dimming device 2 can adjust the brightness of the lamp 3 according to the content of the dimming command C1, and adjust the time when the lamp 3 emits light.

After the dimming command C1 is generated, the first micro control unit 11 controls the data transmitting module 15 to issue the dimming command C1. In the embodiment, the sensing device 1 does not transmit the dimming command C1 to the specific dimming device 2, but externally issues the dimming command C1 in a multicasting manner. Therefore, as long as all of the dimming devices 2 located within the effective transmission range of the sensing device 1 can receive the dimming command C1. In other embodiments, the sensing device 1 and the dimming device 2 can also transmit the dimming command C1 in a manner other than wireless, for example, by using a power line (such as the power line 6 shown in FIG. 8), but not limited.

The sensing device 1 can also include an environment sensing module 16 electrically connected to the first micro control unit 11. The environment sensing module 16 is configured to sense environmental data of the location of the sensing device 1 and trigger the first micro control unit 11 to generate the dimming command C1 when the environmental data exceeds a threshold. For example, the sensing device 1 can be disposed outdoors, and the environment sensing module 16 can be a brightness sensor. When the environment sensing module 16 determines the external brightness is lower than the threshold according to the detected environmental data. When the first micro control unit 11 is triggered to generate and emit the dimming command C1, the dimming device 2 is adjusted to adjust the lamp 3 to an appropriate brightness.

For example, when the environment sensing module 16 determines that it is daytime, the first micro control unit 11 can also be triggered to generate and issue the dimming command C1, thereby causing the dimming device 2 to turn off the lamp 3. Moreover, in this embodiment, the triggering behavior of the environment sensing module 16 can also be set to a preferred order. The advantage is that even if the sensing module 13 detects an external change and sends another dimming command C1 to the dimming device 2, the dimming device 2 will still not adjust the lamp 3 because it is now daytime. The brightness of the light, thereby achieving the power saving effect. In this embodiment, the environment sensing module 16 can also be, for example, a temperature sensor or a humidity sensor, etc., according to the temperature of the location of the sensing system. Humidity determines whether or not to adjust the lamp 3. However, the above description is only a preferred embodiment and should not be limited thereto.

As shown in the fourth figure, the dimming device 2 mainly includes a second micro control unit 21, a second radio frequency module 22, a second power module 23, a data receiving module 24, and a dimming module. 25. The second micro control unit 21 is electrically connected to the second RF module 22, the second power module 23, the data receiving module 24, and the dimming module 25, and the modules 22-25 are control.

Like the first RF module 12, the second RF module 22 is a radio frequency chip or a radio frequency tag that can record RFID information. The administrator can use the access device 42 to set a second set value S2, and write the second set value S2 to the second RF module when the dimming device 2 is powered on or off. 22, to complete the setting of the dimming device 2. Wherein, different sensing devices 1 and dimming devices 2 may be disposed at different positions, and may belong to different groups, and therefore, different sensing devices 1 may be written with the first set value S1 different in content, and Different dimming devices 2 may also be written with the second set value S2 different in content.

The dimming device 2 is connected to the commercial power 43 through the second power module 23 to obtain the electric energy required for the operation of the dimming device 2. When the dimming device 2 is powered on, the second micro control unit 21 automatically reads the second radio frequency module 22 to obtain the second set value S2 that is written in advance. In this embodiment, the second set value S2 mainly includes the group number to which the dimming device 2 belongs, but is not limited.

The dimming device 2 receives the dimming command C1 sent by the sensing device 1 through the data receiving module 24, and more specifically, the data receiving module 24 receives all the dimming commands C1 in the effective transmission range. The dimming device 2 is electrically connected through the dimming module 25 One or more of the lamps 3, and the dimming module 25 is controlled by the second micro control unit 21 to adjust the opening, closing, brightness, and time of the lighting of the lamp 3. In this embodiment, the luminaire 3 mainly includes at least one Light Emitting Diode (LED), and the dimming module 25 is mainly a Pulse Width Modulation (PWM) mode. Group, but not limited. After receiving the dimming command C1, the dimming device 2 can determine whether the dimming command C1 is sent by the sensing device 1 of the same group as the dimming device 2 according to the content of the dimming command C1.

More specifically, the second micro control unit 21 can obtain the group number of the dimming device 2 from the second set value S2, and obtain the group number of the sensing device 1 from the content of the dimming command C1, and further It can be determined whether the sensing device 1 and the dimming device 2 belong to the same group. When the sensing device 1 and the dimming device 2 belong to the same group, the dimming device 2 controls the dimming module 25 to perform a dimming operation on the lamp 3 according to the content of the dimming command C1.

Referring to the fifth figure, a dimming flowchart of the first preferred embodiment of the present invention is shown. To implement the dimming system of the present invention, the administrator first needs to operate the access device 42 to set the first set value S1 and the second set value S2, and respectively set the first set value S1 and the second The set value S2 is written in the sensing device 1 and the dimming device 2. Thereby, after the dimming system is powered on, the corresponding operation can be performed according to the first set value S1 and the second set value S2.

First, the sensing device 1 is powered on (step S10), and the sensing device 1 reads the first RF module 12 to obtain the first set value S1 (step S12). At the same time, the dimming device 2 is powered on (step S14), and the dimming device 2 reads the second radio frequency module 22 to obtain the second set value S2 (step S16). among them, The sensing device 1 reads the first set value S1 by the first micro control unit 11 to obtain the group number of the sensing device 1. The dimming device 2 reads the second set value S2 by the second micro control unit 21 to obtain the group number of the dimming device 2. The above steps S10 to S12 and the steps S14 to S16 can be executed in synchronization, and do not have an order relationship in execution.

After the dimming system is activated, sensing is continuously performed by the sensing device 1, and it is judged whether or not an external change is sensed (step S18). If no change is sensed, the sensing device 1 continues to sense and the dimming device 2 does nothing.

When the sensing device 1 senses an external change, the dimming command C1 is generated according to the first set value S1 and transmitted to the outside (step S20). Next, if the dimming device 2 is located within the effective transmission range of the sensing device 1, the dimming device 2 can wirelessly receive the dimming command C1 (step S22). After receiving the dimming command C1, the dimming device 2 determines whether the sensing device 1 that issues the dimming command C1 belongs to the same group as the dimming device 2 according to the content of the dimming command C1 (step S24). ). More specifically, the dimming device 2 obtains the group number of the sensing device 1 from the dimming command C1, thereby determining whether the dimming device 2 and the sensing device 1 belong to the same group.

If the determination in step S24 is NO, the dimming device 2 discards the dimming command C1 (step S26); if the determination in step S24 is YES, the dimming device 2 is based on the content of the dimming command C1. The corresponding dimming operation is performed on the connected lamp 3 (step S28).

Referring to the sixth and seventh figures, respectively, a dimming first action schematic diagram and a second action schematic diagram of the first preferred embodiment of the present invention. In this embodiment, it is assumed that the dimming devices 70-72 are all located within the effective transmission range of the sensing device 61, when the sensing device 61 When the dimming command C1 is transmitted externally, the three dimming devices 70 to 72 can be received. The sensing device 61 and the two dimming devices 70, 71 belong to the first group 51, and the dimming device 72 belongs to a different group. Therefore, although the three dimming devices 70-72 receive the dimming command C1, only the dimming devices 70 and 71 adjust the connected lamps 80 and 81 according to the content of the dimming command C1. Light action. In this embodiment, the dimming device 72 of different groups will discard the dimming command C1, and the connected lamp 82 will not be illuminated.

Referring to the eighth figure, a block diagram of a dimming system of a second preferred embodiment of the present invention. Another sensing device 1' and another dimming device 2' are disclosed in this embodiment. The difference between the sensing device 1' and the dimming device 2 is that a sensing module is disposed in the sensing device 1'. In the group 15', a data receiving module 24' is disposed in the dimming device 2.

As shown in the eighth figure, the sensing device 1' is connected to the power line 6 through the first power module 14, and is connected to the mains 43 via the power line 6 to receive power required for operation. The dimming device 2' is connected to the power line 6 via the second power module 23, and is connected to the mains 43 via the power line 6 to receive power required for operation. In this embodiment, the sensing device 1 ′ is further connected to the power line 6 through the data sending module 15 ′, and the light adjusting device 2 ′ is also connected to the power line 6 through the data receiving module 24 ′, whereby the sensing device 1' can transmit the dimming command C1 to the dimming device 2' via the power line 6 in accordance with Power Line Communication (PLC) technology.

It is worth mentioning that in a main embodiment, all the sensing devices 1' and all the dimming devices 2' in the dimming system can be connected to the same power line 6, so that when any sensing device 1' When the dimming command C1 is issued, all of the power lines 6 are connected The dimming device 2' can receive the dimming command C1. In another embodiment, the manager may also configure a plurality of power lines 6 and connect the same group of sensing devices 1' and dimming devices 2' to the same power line 6 when the dimming system is installed. This cuts each group directly. In this configuration, when any of the sensing devices 1' in the group A sends the dimming command C1, only the dimming device 2' in the group A is received, and the dimming device 2' in the other group will The dimming command C1 cannot be received. However, the above description is only a preferred embodiment of the present invention and should not be limited thereto.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Therefore, equivalent changes to the scope of the present invention are included in the scope of the present invention. Bright.

41‧‧‧Configuration area

51‧‧‧First group

52‧‧‧Second group

53‧‧‧ third group

54‧‧‧fourth group

60~69‧‧‧Induction device

70~74‧‧‧ dimming device

80~84‧‧‧Lights

Claims (15)

An inductive dimming system includes: at least one sensing device, each of the sensing devices includes: a first radio frequency module that records a first set value of an external write; and a first micro control unit electrically connected to the first radio frequency The module reads the first RF module when the sensing device is powered on to obtain the first set value; the sensing module is electrically connected to the first micro control unit, and triggers when the external change is sensed. a first micro control unit, and the first micro control unit generates a dimming command according to the content of the first set value; and a data sending module electrically connected to the first micro control unit to externally issue the dimming command; a dimming device, each of the dimming devices being electrically connected to the at least one luminaire, and comprising: a second radio frequency module for recording an externally written second set value; and a second micro control unit electrically connecting the second radio frequency The module reads the second RF module when the dimming device is powered on to obtain the second set value; the data receiving module is electrically connected to the second micro control unit, and receives the a light command; and a dimming module electrically connected to the second micro control unit and the luminaire; wherein the second micro control unit determines, according to the content of the second set value, a group to which the dimming device belongs, and Determining, according to the content of the dimming command, the group to which the sensing device belongs, if the sensing device and the dimming device belong to the same group, The second micro control unit controls the dimming module to perform a dimming operation on the luminaire according to the content of the dimming command. The inductive dimming system of claim 1, wherein the dimming module is a Pulse Width Modulation (PWM) module. The inductive dimming system of claim 1, wherein the sensing device further comprises an environmental sensing module electrically connected to the first micro control unit, wherein the environmental sensing module senses a location of the sensing device The environmental data, and triggering the first micro control unit to generate the dimming command when the environmental data exceeds a threshold. The inductive dimming system of claim 3, wherein the environment sensing module is at least one of a brightness sensor, a temperature sensor, and a humidity sensor. The inductive dimming system of claim 1, wherein the sensing module is an infrared sensing module or a microwave radar sensing module. The inductive dimming system of claim 1, wherein the first set value comprises at least one of a group number, a dimming brightness, and a dimming time to which the sensing device belongs, the second setting value including the tune The group number to which the optical device belongs. The inductive dimming system of claim 6, further comprising an access device, which is an RFID reader, wherein the access device is configured to set the first set value and the second set value. The content of the first set value and the second set value are wirelessly written into the first radio frequency module and the second radio frequency module. The inductive dimming system of claim 1, wherein the sensing device further comprises a first power module electrically connected to the first micro control unit, the dimming device further comprising an electrical connection to the second micro control unit The second power module, the sensing device and the dimming device are respectively connected to the mains through the first power module and the second power module. The inductive dimming system of claim 1, wherein the dimming device is packaged inside a housing of the luminaire. The inductive dimming system of claim 1, wherein the data transmitting module and the data receiving module are connected to the same power line, and the dimming command is transmitted through the power line. The inductive dimming system of claim 1, wherein the luminaire comprises at least one Light Emitting Diode (LED). A dimming method used in the inductive dimming system of claim 1, comprising: a) the inductive dimming system is powered on; b) after step a, the first micro control unit reads the first radio frequency module The first setting value, the second micro control unit reads the second setting value in the second radio frequency module; c) the sensing device determines whether an external change is sensed; d) senses the external When the change is performed, the dimming command is generated and sent according to the first set value; e) the dimming device wirelessly receives the dimming command; f) determining, according to the second set value, whether the dimming command is the dimming command The device is sent by the sensing device of the same group; g) taking step f, and if so, dimming the lamp according to the content of the dimming command. The dimming method of claim 12, further comprising a step h: taking step f, and if not, discarding the dimming instruction. The dimming method of claim 12, wherein in the step b, the first micro control unit reads the first set value to obtain a group number of the sensing device, and the second micro control unit reads the first Setting the value to obtain the group number of the dimming device; in the step f, the dimming device parses the dimming command to obtain the group number of the sensing device, and determines whether the dimming device and the sensing device belong to The same group. The dimming method of claim 12, wherein the step g comprises adjusting a brightness of the luminaire and a luminescence time of the luminaire.