TWI678603B - Illumination system and control method thereof - Google Patents

Abstract

A lighting system includes a plurality of light source devices, a light receiver, a calculation module, and a control module. Each of the plurality of light source devices emits a plurality of light beams having different frequencies. The light receiver receives at least one of a plurality of light beams emitted by the plurality of light source devices. The calculation module is coupled to the light receiver, and obtains the optical parameter of the at least one light beam according to the at least one light beam received by the light receiver. Light parameters include light intensity, color temperature, color rendering, or light ratio. The control module is coupled to the calculation module and a plurality of light source devices. The control module controls the optical parameters of the at least one light beam. Another method for controlling a lighting system is provided.

Description

Lighting system and control method thereof

This disclosure relates to an optical system and a control method thereof, and more particularly, to an illumination system for measuring light information and light information feedback and a control method thereof.

With the introduction of the concept of smart life, smart lighting has also received more and more attention. Smart lighting mainly connects light source devices, information management platforms, and light receivers through wired or wireless signal transmission methods, so that it can automatically adjust brightness, light color, switching status and other related information according to environmental needs or the psychological or physiological needs of the human body. The light parameters create a suitable and comfortable lighting environment, making the lighting system smarter and more in line with the needs of humanization and use.

However, there are still many problems with existing smart lighting. For example, after the initial light parameter setting, the code of each light source device must be remembered. If the code of each light source device is not remembered next time, it will take time to pair the light source device with the code, which will cause inconvenience in use. In addition, when there are multiple light source devices in the same space, the existing smart lighting system cannot measure the light parameters of each light source at the same time, so it cannot effectively create the required lighting environment.

The disclosure provides a lighting system and a control method thereof, which can improve the problems of inconvenience in use and lack of efficiency.

A lighting system disclosed in the present disclosure includes a plurality of light source devices, a light receiver, a calculation module, and a control module. Each of the plurality of light source devices emits a plurality of light beams having different frequencies. The light receiver receives at least one of a plurality of light beams emitted by the plurality of light source devices. The calculation module is coupled to the light receiver, and obtains the optical parameter of the at least one light beam according to the at least one light beam received by the light receiver. Light parameters include light intensity, color temperature, color rendering, or light ratio. The control module is coupled to the calculation module and a plurality of light source devices. The control module controls the optical parameters of the at least one light beam.

A control method of a lighting system disclosed in the present disclosure includes the following steps. Receive at least one of a plurality of light beams having different frequencies. Calculate light parameters of at least one light beam, wherein the light parameters include light intensity, color temperature, color rendering, or illumination ratio. Controlling optical parameters of at least one light beam.

In order to make the above-mentioned features and advantages of the present disclosure more comprehensible, embodiments are described below in detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a lighting system according to an embodiment of the disclosure. Please refer to FIG. 1, a lighting system 10 of the present disclosure includes a plurality of light source devices (such as a first light source device 101 and a second light source device 102, but the number of light source devices in the lighting system 10 is not limited thereto), Controller 110, calculation module 120, and control module 130.

Each light source device is adapted to emit a light beam. For example, each light source device may include one or more light emitting elements (not shown), and each light emitting element may be a light emitting diode, but is not limited thereto.

The plurality of light source devices are adapted to emit a plurality of light beams having different frequencies, respectively. As shown in FIG. 1, the frequency f1 of the first light beam B1 emitted by the first light source device 101 is different from the frequency f2 of the second light beam B2 emitted by the second light source device 102. Here, the frequency refers to, for example, a flicker frequency of a light beam, and each light emission frequency corresponds to an identification code. For general applications such as indoor lighting, the frequency of each light beam is preferably greater than 100 Hertz (Hz), so that the flicker of the light beam cannot be detected by the human eye. If applied to commercial lighting, the frequency of each beam is preferably greater than 3000 Hz, thereby creating a suitable and comfortable lighting environment.

Each light beam has a light parameter that can be adjusted as required. The adjustable light parameters include, for example, light intensity, color temperature, color rendering index (CRI), or light ratio. The illumination ratio of a light beam can be defined as the ratio of the light intensity of the light beam to the total light intensity of all light beams or the ratio of the light intensity of the light beam to the total light intensity of all light beams.

According to different application purposes or application environments, multiple light beams emitted by multiple light source devices may have the same or different light parameters. For example, when the lighting system 10 is applied to a lighting environment such as a home, a classroom, or an office that requires more consistent lighting performance, multiple light beams emitted by multiple light source devices may have the same light parameters. On the other hand, when the lighting system 10 is applied to a lighting environment such as a museum, a shopping mall, or a performing arts hall, which needs to highlight the illuminated target or needs a differentiated lighting performance, the multiple light beams emitted by the multiple light source devices may have different lights. parameter.

Taking commercial lighting as an example, the light source device as the main lighting and the light source device as the ambient lighting are usually used to simultaneously illuminate items that need to be highlighted or watched (such as exhibits or auctions). The light beam emitted by the light source device as the main illumination (eg, the first light beam B1 emitted by the first light source device 101) and the light beam emitted by the light source device as the ambient light (eg, the second light beam B2 emitted by the second light source device 102) have different Light parameters (such as light intensity). According to the actual test results, it is found that areas or objects with higher illumination may not receive more attention, but when the light intensity of the first light beam B1 is greater than or equal to the light intensity of the second light beam B2, especially when it is greater than 2 to 20 times. The illuminated target illuminated by the first light beam B1 and the second light beam B2 can receive more attention.

The light receiver 110 is adapted to receive at least one of a plurality of light beams emitted by a plurality of light source devices. For example, the light receiver 110 may include a light sensing element. The light sensing element may include a photo diode (PD), a charge coupled device (CCD), a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS), a spectrometer, or other types of light sensors.测 装置。 Test components.

According to requirements, the light receiver 110 may further include other components. FIG. 2 and FIG. 3 are schematic cross-sectional views of two types of optical receivers according to an embodiment of the disclosure. Please refer to FIG. 2 and FIG. 3. In addition to including the light sensing element 112, the light receiver 110 may further include a plurality of light converging elements 114 to increase the light receiving capability of the light receiver 110 for a large-angle light beam.

The plurality of light focusing elements 114 are disposed above the light sensing element 112 to focus the plurality of light beams emitted from the light source device to the light sensing element 112. Each light-concentrating element 114 may be a lens, a reflector, or any known condensable element.

In FIG. 2, each light focusing element 114 is a lens, and the focal length of each lens is equal to the shortest distance D between the lens and the light sensing element 112. It should be noted that although FIG. 2 shows that multiple lenses have the same design parameters (such as size, radius of curvature, or focal length, etc.), the design parameters of each lens can be changed according to actual needs. limit.

In FIG. 3, each light converging element 114 is a reflective cover, such as a reflective cover having a parabolic surface, and the focal point of each reflective cover is the location of the light sensing element 112. It should be noted that although FIG. 3 shows that multiple reflectors have the same design parameters (such as size or curvature, etc.), the design parameters of each reflector can be changed according to actual needs, and is not limited to what is shown in FIG. 3. .

With the arrangement of multiple light convergence elements 114, the light receiving area of the light receiver 110 and the light receiving intensity at different angles can be effectively improved. As for the difference in the received light intensity of the light concentrating elements 114 disposed at different positions, the light parameter correction (for example, the correction of the illuminance) of the calculation module 120 can be used to make up for. In an embodiment, the light receiving intensity at different angles can also be controlled by controlling the distance between each light converging element 114 and the light sensing element 112 and the size of each light converging element 114.

In FIGS. 2 and 3, the plurality of light converging elements 114 may be fixed above the light sensing element 112 (for example, fixed on the surface S on which the light sensing element 112 is disposed) by a fixing mechanism or an adhesive, and The light-transmitting medium between the plurality of light-converging elements 114 and the light-sensing element 112 may include air or other light-transmitting media, but is not limited thereto.

Please refer to FIG. 1 again, the calculation module 120 is coupled to the optical receiver 110. After the light receiver 110 receives the at least one light beam, the light receiver 110 may transmit a signal C corresponding to the at least one light beam to the calculation module 120 in a wired or wireless manner. In one embodiment, the calculation module 120 may be constructed in the light receiver 110 or in a mobile device, a gateway, or a cloud system.

The calculation module 120 obtains the optical parameters of the at least one light beam according to the at least one light beam received by the light receiver 110. For example, the calculation module 120 may calculate a light parameter of the at least one light beam according to the at least one light beam received by the light receiver 110 and undergo Fourier transform. For example, the light intensity, color temperature, color rendering, illumination ratio, or a combination of at least two of the at least one light beam are calculated.

FIG. 4 is a schematic diagram of converting a time domain into a frequency domain by using a Fourier transform. Referring to FIG. 4, when the light receiver receives the first light beam and the second light beam with different frequencies, the light receiver obtains the current change of each light beam in the time domain. The calculation module can calculate the frequency and power of each beam according to the multiple beams received by the optical receiver and through Fourier transform. As shown in FIG. 4, since the first beam and the second beam have different frequencies, the calculation module can obtain two optical signals corresponding to different frequencies (such as the frequency f1 and the frequency f2) in the frequency domain after the Fourier transform. In other words, the calculation module can use Fourier transform to separate optical signals with different frequencies. In addition, the calculation module can further calculate the light intensity, color temperature, color rendering, illumination ratio, or a combination of at least two of the light beams through the calculated frequency and power.

For example, when the light receiver includes a spectrometer (that is, the light sensing element is a spectrometer), the spectrometer receives at least one of a plurality of light beams emitted from a plurality of light source devices and generates a light spectrum corresponding to at least one of the plurality of light beams. . The calculation module calculates the frequency and power of the at least one beam in the full band according to the optical spectrum and Fourier transform, and further calculates the color temperature, color rendering, and illumination of the at least one beam through the calculated frequency and power. Ratio or a combination of at least two of the above. On the other hand, when the light sensing element of the light receiver is a photodiode, the photodiode receives at least one of the plurality of light beams emitted by the plurality of light source devices and generates a light signal corresponding to at least one of the plurality of light beams. (Such as the current of the at least one beam in a specific band). In addition, the calculation module calculates the frequency and power of the at least one beam in a specific band (such as the bright vision band) according to the optical signal and Fourier transform, and further calculates the at least one beam through the calculated frequency and power. (Or light intensity), the proportion of light, or a combination of the two.

Please refer to FIG. 1 again. The control module 130 is coupled to the calculation module 120 and a plurality of light source devices (such as the first light source device 101 and the second light source device 102). The control module 130 controls the light of the at least one beam. parameter. Specifically, the control module 130 may be coupled to the calculation module 120 and a plurality of light source devices in a wired or wireless manner. The calculation module 120 may transmit the calculation result R to the control module 130 in a wired or wireless manner, and the control module 130 may transmit a control signal to at least one of the plurality of light source devices in a wired or wireless manner to control multiple beams. Optical parameters of at least one of them. In addition, the control module 130 may be constructed in the light receiver 110 or in a mobile device, a gateway, or a cloud system.

In this embodiment, the total number of light beams received by the light receiver 110 is equal to the total number of the plurality of light source devices. Specifically, the first light source device 101 emits a first light beam B1, and the second light source device 102 emits a second light beam B2. The light receiver 110 receives the first light beam B1 and the second light beam B2, and the light receiver 110 transmits a signal C corresponding to the first light beam B1 and the second light beam B2 to the calculation module 120. The calculation module 120 obtains the optical parameters of the first light beam B1 and the second light beam B2 according to the first light beam B1 and the second light beam B2 received by the optical receiver 110. The control module 130 transmits a control signal C1 to the first light source device 101, and the control module 130 transmits a control signal C2 to the second light source device 102 to modulate the optical parameters of the first light beam B1 and the first light source B1 output by the first light source device 101. Optical parameters of the second light beam B2 output by the two light source devices 102. For example, the control module 130 may control the light intensity, color temperature, color rendering, illumination ratio, or a combination of at least two of the first light beam B1 and the second light beam B2.

However, in another embodiment, the total number of light beams received by the light receiver 110 may be less than the total number of the plurality of light source devices. For example, when the multiple light source devices are not all turned on or one of the multiple light source devices is outside the receiving range of the light receiver 110, the total number of light beams received by the light receiver 110 may be less than Total number of light source units. Correspondingly, the calculation module 120 calculates the light parameters of the light beam according to the light beam received by the light receiver 110, and the control module 130 outputs a control signal to a light source device corresponding to the light beam as required to modulate the light source device. Optical parameters of the beam. Here, the light parameter may be light intensity, color temperature, color rendering, illumination ratio, or a combination of at least two of the foregoing. Another mention is that the total number of light source devices controlled by the control module 130 may be equal to or less than the total number of light beams received by the light receiver 110.

FIG. 5 is a flowchart of a control method of a lighting system according to an embodiment of the disclosure. Please refer to FIG. 1 and FIG. 5 at the same time. The control method of the lighting system (such as the lighting system 10) disclosed in the present disclosure includes the following steps. First, as shown in step 510, at least one of a plurality of light beams having different frequencies is received. Specifically, the light receiver 110 of the lighting system 10 is used to receive at least one of the first light beam B1 emitted from the first light source device 101 and the second light beam B2 emitted from the second light source device 102, wherein the first light beam B1 and the second light beam B1 The light beam B2 is set in advance to have different frequencies.

Next, as shown in step 520, the optical parameters of the at least one light beam are calculated. The light parameters include light intensity, color temperature, color rendering, or illumination ratio. In the case where the first light beam B1 and the second light beam B2 are received by the optical receiver 110, since the frequency f1 of the first light beam B1 is different from the frequency f2 of the second light beam B2, the calculation module 120 may use Fourier transform to transform the time domain Transform into the frequency domain to distinguish the two beams, and calculate the light intensity, color temperature, color rendering, illumination ratio, or a combination of at least two of the beams through the respective frequencies and powers of the two beams.

Next, as shown in step 530, controlling light parameters of the at least one light beam, for example, controlling light intensity, color temperature, color rendering, illumination ratio, or a combination of at least two of the at least one light beam. Specifically, since a plurality of light beams output by the plurality of light source devices are set to different frequencies, when the light parameter of any one of the light beams does not match or has a deviation from the required light parameter, the light source device corresponding to the frequency can be confirmed by To identify the light source device to be adjusted in real time, and adjust the light parameter of the light beam output by the light source device through the control module 130 to obtain the required lighting environment.

In an embodiment, the light intensity of the first light beam B1 (beam from the main lighting) may be controlled via the control module 130 to be greater than or equal to twice the light intensity of the second light beam B2 (beam from the ambient lighting) so that The articles illuminated by the first light beam B1 and the second light beam B2 can better attract more attention. In another embodiment, when it is necessary to adjust the light parameters of the light beams output by the light source device closer to the light receiver 110, the light intensity of multiple light beams may be compared through the calculation module 120 to determine the multiple light source devices. Which of them is closest to the light receiver 110 (under a condition that multiple light beams have the same light intensity, the closer the distance between the light source device and the light receiver 110, the stronger the illuminance received by the light receiver 110). Then, the control module 130 can be caused to control the optical parameter of the light beam with the highest light intensity (that is, the light beam closest to the output of the optical receiver 110) among the plurality of light beams according to the judgment result made by the calculation module 120.

FIG. 6 to FIG. 8 are schematic diagrams of a lighting system according to other embodiments of the present disclosure, in which the same elements are denoted by the same reference numerals, and will not be described again below.

Referring to FIG. 6, the main difference between the lighting system 20 and the lighting system 10 of FIG. 1 is that the lighting system 20 further provides a function of activating the light source device. Specifically, when all the light source devices are turned off, the light intensity received by the light receiver 110 is zero. At this time, the control module 130 may transmit a control signal (such as a radio frequency, but not limited thereto) to at least one of the plurality of light source devices to turn on at least one of the plurality of light source devices.

Taking FIG. 6 as an example, when the first light source device 101 and the second light source device 102 are both turned off, the light intensity received by the light receiver 110 is zero. At this time, the control module 130 can transmit the control signal C1 to the first light source device 101, and the control module 130 can transmit the control signal C2 to the second light source device 102 to activate the first light source device 101 and the second light source device 102. However, in another embodiment, the total number of light source devices turned on by the control module 130 may be less than the total number of multiple light source devices. For example, the control module 130 may activate only one of the plurality of light source devices.

Please refer to FIG. 7. The main difference between the lighting system 30 and the lighting system 20 in FIG. 6 is that the calculation module 120 in the lighting system 30 can further determine whether all the light source devices in the lighting system 30 are turned on, and some light source devices are not When it is turned on, the lighting system 30 can activate the light source device in this part. Specifically, the calculation module 120 may include information such as the total number of light source devices in the lighting system 30 and all frequencies of all light beams output by all light source devices. After the calculation module 120 receives the signal C from the light receiver 110, the calculation module 120 can calculate whether the frequency type received by the light receiver 110 is less than the total number of the plurality of light source devices. If the type of frequency received by the light receiver 110 is less than the total number of the plurality of light source devices, the calculation module 120 may further detect the frequency at which the light intensity is zero among all the built-in frequencies to determine the light source device that is not activated, and instruct the control The module 130 sends a control signal to the non-activated light source device to turn on the non-activated light source device.

Taking FIG. 7 as an example, the light receiver 110 receives only the second light beam B2. The calculation module 120 may calculate that the frequency type (one type) received by the light receiver 110 is less than the total number (two) of the plurality of light source devices. The calculation module 120 can further detect that the light intensity of the first light beam B1 corresponding to the frequency f1 is zero, thereby determining that the first light source device 101 is turned off. The calculation module 120 may instruct the control module 130 to transmit a control signal C1 to the first light source device 101 to turn on the first light source device 101. In another embodiment, when the total number of light source devices that are not turned on is greater than one (for example, N), the control module 130 may turn on all light source devices that are not turned on or part of the light source devices that are not turned on. In other words, the total number of light source devices that are turned on may be greater than 1 and less than or equal to N.

Referring to FIG. 8, the main difference between the lighting system 40 and the lighting system 10 of FIG. 1 is that the lighting system 40 further includes a physiological sensing device 140. The physiological sensing device 140 is coupled to the control module 130. The physiological sensing device 140 is adapted to sense a physiological parameter B of the target O to be measured. The physiological parameter B may include heart rate, heart rate, blood pressure, body temperature, or breathing rate. For example, the physiological sensing device 140 may be a smart phone or a smart watch capable of measuring the physiological parameter B, but is not limited thereto. In one embodiment, the physiological sensing device 140 may be constructed in the light receiver 110 or in a mobile device, a gateway, or a cloud system.

With the setting of the physiological sensing device 140, the control module 130 can obtain the position information of each target O and the physiological parameter B of each target O in real time. The position information of each target O can be used to determine whether the target O is in the lighting environment where the lighting system 40 is located, and the physiological parameter B of each target O can be used to evaluate the mental state of the target O (for example, Awake or want to sleep). Correspondingly, the control module 130 can control the light intensity, color temperature, color rendering, illumination ratio, or a combination of at least two of at least one of the plurality of light beams according to the physiological parameter B to change the mental state of the target O to be measured.

Taking FIG. 8 as an example, when it is measured that the target O (such as a student) is in the lighting environment where the lighting system 40 is located, and the heart rate or the breathing rate of the target O is slow, it indicates that the target O is faint. If you are drowsy, you can control the light intensity, color temperature, or a combination of the two of at least one of the multiple beams through the control module 130 (for example, make all the light source devices provide blueish white light or make only the target to be measured The light source device above O provides blueish white light) to make the target O's spirit more concentrated, thereby improving the learning effect and academic performance.

In summary, in the embodiment of the present disclosure, since the multiple light source devices emit multiple light beams with different frequencies, the optical parameters of the light beams output by each light source device can be identified in real time, and the control module adjusts the target light. parameter. Therefore, the lighting system and its control method disclosed in the present disclosure can improve the problems of inconvenience and lack of efficiency of the conventional technology. In an embodiment, the light receiver in the lighting system may further include a light converging element to improve the light receiving area of the light receiver and the light receiving intensity at different angles. In another embodiment, the lighting system may further provide a function of activating the light source device or a function of determining whether all the light source devices in the lighting system are turned on. In yet another embodiment, the lighting system may further include a physiological sensing device to adjust the lighting environment according to the physiological parameters of the target to be measured.

Although the present disclosure has been disclosed as above by way of example, it is not intended to limit the present disclosure. Any person with ordinary knowledge in the technical field should make some changes and modifications without departing from the spirit and scope of the present disclosure. The scope of protection of this disclosure shall be determined by the scope of the attached patent application.

10, 20, 30, 40‧‧‧ lighting system

101‧‧‧The first light source device

102‧‧‧Second light source device

110‧‧‧light receiver

112‧‧‧light sensor

114‧‧‧Optical Convergence Element

120‧‧‧Calculation Module

130‧‧‧control module

140‧‧‧ physiological sensing device

510, 520, 530‧‧‧ steps

B‧‧‧ physiological parameters

B1‧‧‧First Beam

B2‧‧‧Second Beam

C‧‧‧Signal

C1, C2‧‧‧ control signals

D‧‧‧ shortest distance

f1, f2‧‧‧frequency

O‧‧‧Target

R‧‧‧ calculation result

S‧‧‧ surface

FIG. 1 is a schematic diagram of a lighting system according to an embodiment of the disclosure. FIG. 2 and FIG. 3 are schematic cross-sectional views of two types of optical receivers according to an embodiment of the disclosure. FIG. 4 is a schematic diagram of converting a time domain into a frequency domain using a Fourier transform. FIG. 5 is a flowchart of a control method of a lighting system according to an embodiment of the disclosure. 6 to 8 are schematic diagrams of a lighting system according to other embodiments of the disclosure.

Claims (19)

An illumination system includes: a plurality of light source devices, each of which emits a plurality of light beams having different flicker frequencies; a light receiver, which receives at least one of the light beams emitted by the light source devices; a calculation module, coupled to The light receiver, wherein the calculation module obtains a light parameter of the at least one light beam according to the at least one light beam received by the light receiver, and the light parameter includes light intensity, color temperature, color rendering, or illumination ratio; and a control A module coupled to the calculation module and the light source devices, the control module controls the light parameter of the at least one light beam, wherein the calculation module also compares the light intensity of the light beams, and the control module also The light parameter of the light beam with the highest light intensity among the light beams is controlled. The lighting system according to item 1 of the patent application scope, wherein the light receiver comprises: a light sensing element; and a plurality of light converging elements disposed above the light sensing element to condense the at least one light beam To the light sensing element. The lighting system according to item 2 of the scope of patent application, wherein each of the light converging elements is a lens or a reflecting cover. The lighting system according to item 1 of the patent application scope, wherein the light receiver includes a spectrometer, and the spectrometer receives at least one of the light beams emitted by the light source devices and generates at least one corresponding to the light beams. Light spectrum. The lighting system according to item 4 of the scope of patent application, wherein the calculation module calculates the light parameter of the at least one light beam according to the light spectrum and Fourier transform. The lighting system according to item 1 of the patent application scope, wherein the light source devices include a first light source device and a second light source device, the first light source device emits a first light beam having a first frequency, and the first The two light source devices emit a second light beam having a second frequency, and the control module controls the light intensity of the first light beam to be greater than or equal to the light intensity of the second light beam. According to the lighting system described in item 6 of the patent application scope, the light intensity of the first light beam is 2 to 20 times the light intensity of the second light beam. As in the lighting system described in item 4 of the scope of patent application, when the calculation module calculates that the frequency type received by the light receiver is less than the total number of the light source devices or the light intensity received by the light receiver is At zero hours, the control module sends a control signal to at least one of the light source devices to turn on at least one of the light source devices. The lighting system according to item 1 of the patent application scope further includes: a physiological sensing device coupled to the control module, wherein the physiological sensing device senses a physiological parameter of the target to be measured. The lighting system according to item 9 of the scope of patent application, wherein the physiological parameters include heartbeat speed, heartbeat frequency, blood pressure, body temperature, or breathing frequency. The lighting system according to item 9 of the scope of patent application, wherein the control module controls the light parameter of at least one of the light beams according to the physiological parameter. The lighting system according to item 1 of the scope of patent application, wherein the light parameter includes at least one of light intensity, color temperature, color rendering, or illumination ratio. A control method of a lighting system includes: receiving at least one of a plurality of light beams having different flicker frequencies; calculating a light parameter of the at least one light beam, the light parameter including light intensity, color temperature, color rendering, or light ratio; and controlling the at least The light parameter of a light beam; comparing the light intensity of the light beams; and controlling the light parameter of the light beam with the highest light intensity among the light beams. The method for controlling a lighting system according to item 13 of the scope of patent application, wherein the method of calculating the optical parameter of the at least one light beam includes: generating a light spectrum corresponding to the at least one light beam; and according to the light spectrum and undergoing Fourier transform To calculate the optical parameter of the at least one light beam. The control method of the lighting system according to item 13 of the patent application scope, wherein the method of controlling the optical parameter of the at least one light beam includes: controlling a light intensity of a first light beam among the light beams to be greater than or equal to that in the light beams. The light intensity of a second light beam. The control method of the lighting system according to item 15 of the patent application scope, wherein the method of controlling the optical parameter of the at least one light beam includes: controlling the light intensity of the first light beam to be 2 to 20 of the light intensity of the second light beam Times. The control method of the lighting system according to item 14 of the scope of patent application, further includes: calculating the type of the received frequency or judging whether the received light intensity is zero. The control method of the lighting system according to item 13 of the scope of patent application, further comprising: sensing a physiological parameter of the target to be measured, and controlling the optical parameter of at least one of the light beams according to the physiological parameter. The method for controlling a lighting system according to item 13 of the scope of patent application, wherein the method of controlling the optical parameter of the at least one light beam includes controlling at least one of a light intensity, a color temperature, a color rendering property, or an illumination ratio of the at least one light beam. .