TWI880099B - Lamp and lighting control method thereof - Google Patents

Abstract

A lamp includes a controller, a number of light-emitting elements, a number of current conversion modules and an interpretation module. The controller is configured for outputting a dimming signal. The current conversion modules are coupled to the light-emitting elements and configured to control the light-emitting elements to emit light. The interpretation module is coupled to the current conversion modules and configured for outputting a number of control signals corresponding to the dimming signals to the current conversion modules according to a comparison table. The light-emitting elements are different in light-emitting characteristics, and one of the current conversion modules is configured to output a feedback signal to the controller. The feedback signal carries related data of current input/output of the current conversion modules.

Description

Lamp and lighting control method thereof

This disclosure relates to a lamp and a lighting control method thereof.

It is known that the light emitted by street lamps with medium and high color temperature has better luminous efficiency, but the transmittance is poor on rainy days, which leads to serious light exposure. Although the transmittance of low color temperature light emitted by street lamps is better on rainy days, the luminous efficiency is lower. Therefore, how to emit appropriate lighting in the same street lamp in response to environmental changes is one of the directions that the industry in this field is working on.

This disclosure is about a lamp and a lighting control method thereof, which can improve the above-mentioned known problems.

An embodiment of the present disclosure provides a lamp. The lamp includes a controller, a plurality of light-emitting elements, a plurality of current conversion modules, and an interpretation module. The controller is used to output a dimming signal. These current conversion modules are coupled to these light-emitting elements and used to control the light-emitting elements. The interpretation module is coupled to these current conversion modules and used to output a plurality of control signals corresponding to the dimming signal to these current conversion modules respectively according to a comparison table. These light-emitting elements differ in a light-emitting characteristic and one of these current conversion modules is used to output a feedback signal to the controller.

Another embodiment of the present disclosure proposes a lighting control method for a lamp. The lighting control method includes the following steps: a controller outputs a dimming signal; according to a comparison table, an interpretation module outputs a plurality of control signals corresponding to the dimming signal to a plurality of current conversion modules respectively, wherein these current conversion modules are coupled to a plurality of light-emitting elements, and these light-emitting elements are different in a lighting characteristic; each current conversion module controls the corresponding light-emitting element to emit light according to the corresponding control signal; and one of these current conversion modules outputs a feedback signal to the controller.

In order to better understand the above and other aspects of this disclosure, the following is a specific example, and the attached drawings are used to explain in detail as follows:

10: Power supply

20: Cloud Server

100,200:Lighting

110: Controller

120A, 220A: First light board

120B, 220B: Second light board

121,221: First light-emitting element

122,222: Second light-emitting element

131,231: First current conversion module

132,232: Second current conversion module

140: Interpretation module

150: Power conversion module

220C: Third light board

220D: Fourth light board

223: The third light-emitting element

224: The fourth luminous element

233: The third current conversion module

234: Fourth current conversion module

C1: First DC

C2: Second direct current

C3: Third direct current

C4: Fourth Direct Current

D1: dimming signal

F ₁₃₁ : First feedback signal

F ₁₃₂ : Second feedback signal

P2: DC

P1: alternating current

S ₁₃₁ , S ₂₃₁ : first control signal

S ₁₃₂ , S ₂₃₂ : Second control signal

S ₂₃₃ : Third control signal

S ₂₃₄ : Fourth control signal

S1: Abnormal notification signal

S2: Abnormal signal

T1: Dimming command

T1,T2: Comparison table

Figure 1 shows a functional block diagram of a lamp according to an embodiment of the present invention.

Figure 2 shows a functional block diagram of a lamp according to another embodiment of the present invention.

Figure 3 shows a flow chart of the lighting control method of the lamp in Figure 1.

Please refer to Figure 1, which shows a functional block diagram of a lamp 100 according to an embodiment of the present invention. The lamp 100 of this embodiment is, for example, a street lamp, a searchlight, a stadium lamp or other types of lighting devices. The lamp 100 can be configured in various places that require lighting, such as roads, suburbs, stadiums, and the sea.

The lamp 100 includes a controller 110, a plurality of light-emitting elements (e.g., at least one first light-emitting element 121 and at least one second light-emitting element 122), a plurality of current conversion modules (e.g., a first current conversion module 131 and a second current conversion module 132), and an interpretation module 140. These light-emitting elements have different light-emitting characteristics. The controller 110 is used to output a dimming signal D1. The current conversion module is coupled to the light-emitting element and is used to control the light-emitting element. The interpretation module 140 is coupled to these current conversion modules and is used to output a plurality of control signals (e.g., a first control signal _S131 and a second control signal _S132 ) corresponding to the dimming signal D1 to these current conversion modules respectively according to a comparison table T1. In this way, by combining a plurality of light-emitting elements with different light-emitting characteristics, a plurality of different light-emitting modes of illumination can be emitted to cope with a variety of or changing external environmental conditions.

Specifically, the lamp 100 further includes at least one sensor (not shown), which is electrically coupled to the controller 110. The sensor can detect external environmental conditions. The external environmental conditions include weather (e.g., rainy, sunny, cloudy, foggy, etc.), time period (e.g., daytime or nighttime, etc.), or road conditions (e.g., whether there is water accumulation), etc.

In this embodiment, the controller 110 is, for example, a smart controller of a street lamp, which is, for example, a physical circuit formed by a semiconductor process. The controller 110 outputs a corresponding dimming signal D1 to the interpretation module 140 according to the external environment state. In another embodiment, the cloud server 20 may issue a dimming instruction T1 to the controller 110, and the controller 110 outputs a corresponding dimming signal D1 to the interpretation module 140 according to the dimming instruction T1. The interpretation module 140 can output the first control signal S ₁₃₁ and the second control signal S ₁₃₂ corresponding to the dimming signal D1 to the first current conversion module 131 and the second current conversion module 132 respectively according to the comparison table T1. The first current conversion module 131 outputs the first direct current C1 corresponding to the first control signal S ₁₃₁ to the first light-emitting device 121 and the second current conversion module 132 outputs the second direct current C2 corresponding to the second control signal S ₁₃₂ to the second light-emitting device 122. The first light-emitting device 121 and the second light-emitting device 122 emit corresponding lighting corresponding to the external environment state. The first control signal S ₁₃₁ and the second control signal S ₁₃₂ are, for example, pulse width modulation signals (PWM).

As shown in FIG. 1 , the first light-emitting element 121 and the second light-emitting element 122 are, for example, light-emitting diodes, laser diodes or other light-emitting elements suitable for the lamp 100. The first light-emitting element 121 and the second light-emitting element 122 are different in light-emitting characteristics. Although the light-emitting element with the same light-emitting characteristics in the embodiment of the present invention is illustrated as one, in other embodiments, there may be two or more light-emitting elements with the same light-emitting characteristics. The first light-emitting element 121 and the second light-emitting element 122 are different in light-emitting color temperature. In one embodiment, the light-emitting color temperature of the first light-emitting element 121 is higher than the light-emitting color temperature of the second light-emitting element 122. Specifically, the first light-emitting element 121 is, for example, a medium-high color temperature light-emitting element, and the second light-emitting element 122 is, for example, a low color temperature light-emitting element. The aforementioned "medium-high color temperature" is, for example, a color temperature range between 4000K and 10000K, and the "low color temperature" is, for example, a color temperature range between 1000K and 4000K, but the embodiments of the present invention are not limited thereto.

As shown in FIG. 1, the lamp 100 further includes at least one lamp board, each of which can carry at least one light-emitting element or at least two light-emitting elements with the same or different light-emitting characteristics. For example, the lamp 100 further includes a first lamp board 120A and a second lamp board 120B, at least one first light-emitting element 121 with the same light-emitting characteristics can be configured on the first lamp board 120A, and at least one second light-emitting element 122 with the same light-emitting characteristics can be configured on the second lamp board 120B. Each lamp board can be coupled to a corresponding current conversion module to be controlled by the corresponding current conversion module. For example, the first lamp board 120A is coupled to the first current conversion module 131, and the second lamp board 120B is coupled to the second current conversion module 132.

As shown in FIG. 1 , each current conversion module (the first current conversion module 131 and the second current conversion module 132) is, for example, a physical circuit formed by a semiconductor process, which is used to output a DC power to a corresponding light-emitting device (or light panel) according to a corresponding control signal, wherein the DC power comparison table T1 is determined. For example, the first current conversion module 131 outputs a first DC power C1 to a first light-emitting device 121 according to a first control signal S ₁₃₁ , and the first light-emitting device 121 emits light under the drive of the first DC power C1. The second current conversion module 132 outputs a second DC power C2 to a second light-emitting device 122 according to a second control signal S ₁₃₂ , and the second light-emitting device 122 emits light under the drive of the second DC power C2. In addition, the number of the current conversion modules is equal to the types of the light-emitting characteristics of the light-emitting elements, and each current conversion module is coupled to at least one light-emitting element with the same light-emitting characteristics.

Each current conversion module outputs a direct current to a corresponding lamp board according to a corresponding control signal to control the light emitting element disposed on the corresponding lamp board to emit light. For example, the first current conversion module 131 outputs a first direct current C1 to the first lamp board 120A according to a first control signal _S131 to control the first light emitting element 121 disposed on the first lamp board 120A to emit light, and the second current conversion module 132 outputs a second direct current C2 to the second lamp board 120B according to a second control signal _S132 to control the second light emitting element 122 disposed on the second lamp board 120B to emit light.

The interpretation module 140 is, for example, a physical circuit formed by a semiconductor process, or may be software or firmware, which may be integrated into the controller 110 or another controller or processor. The interpretation module 140 may store a comparison table T1. In one embodiment, the interpretation module 140 performs: (1) comparing the dimming signal D1 according to the comparison table; and (2) outputting a control signal corresponding to the dimming signal D1 to the corresponding light-emitting element, and does not perform a voltage division operation and/or a current division operation, and/or does not perform any signal processing on the dimming signal D1, but this is not intended to limit the embodiments of the present invention.

As shown in FIG. 1 , the lamp 100 further includes a power conversion module 150. The power conversion module 150 is, for example, an AC-to-DC converter. The AC-to-DC converter has the advantages of being cheap, stable, mature, and having high conversion efficiency. Being placed at the front end of the circuit of the power conversion module 150 and the interpretation module 140 can effectively prevent surges from damaging the power conversion module 150 and the interpretation module 140. The power conversion module 150 is coupled to these current conversion modules and the interpretation module 140, and is used to supply power to these current conversion modules and the interpretation module 140. For example, the power source 10 is coupled to the controller 110, and outputs AC power P1 to the controller 110. The controller 110 transmits the AC power P1 to the power conversion module 150. The power conversion module 150 converts the AC power P1 into the DC power P2 and provides the DC power P2 required by each current conversion module and the interpretation module 140 according to the requirements of each current conversion module and the interpretation module 140. The DC power P2 required by each current conversion module and the interpretation module 140 may be the same or different.

The relationship among the dimming signal D1, the first control signal _S131 and the second control signal _S132 is described below.

As shown in Table 1 below, the relationship between the dimming signal D1, the first control signal S ₁₃₁ and the second control signal S ₁₃₂ is listed (comparison table T1). The comparison table T1 can be obtained in advance through experiments, simulations, etc., and then stored in the interpretation module 140 or in a storage device (for example, a memory) coupled to the interpretation module 140. The comparison table T1 in Table 1 is only an example and is not used to limit the embodiments of the present invention. It can be seen from Table 1 that the values of several control signals of the embodiments of the present invention may be equal or different. For example, the control signals are all equal to 0; or, one of the control signals is equal to 0, and the other control signal is not equal to 0. In another embodiment, the values of these control signals may be greater than 0 and equal. In other embodiments, the values of these control signals may not be equal to 0. The values and/or proportional relationships of these control signals may depend on the external environment state, and the embodiments of the present invention are not limited thereto.

For example, if the dimming signal D1 is 4 volts (Voltage, V), the interpretation module 140 outputs a first control signal S ₁₃₁ representing 80% of 4V to the first light-emitting device 121 and a second control signal S ₁₃₂ representing 0% of 4V to the second light-emitting device 122 according to the comparison table T1. The first light-emitting device 121 emits light according to the first control signal S ₁₃₁ and the second light-emitting device 122 emits light according to the second control signal S _132. The light emission of the first light-emitting device 121, the light emission of the second light-emitting device 122 or the mixed light thereof can conform to the external environment state. For example, on non-rainy days, the lamp 100 can emit medium-high color temperature light, which has better luminous efficiency and makes it easier for road users to concentrate and identify near and far objects (such as the shape of objects). On rainy days, the lamp 100 can emit low color temperature light, wherein low color temperature light has good penetration into rain and fog, is not easy to form glare, and helps to improve driving safety. In one embodiment, during busy traffic hours, the lamp 100 can provide medium and high color temperature lighting to improve the spirit of road users and help road users identify near and far objects (such as the shape of objects). In the late night hours, the lamp 100 can provide low color temperature lighting to reduce the impact of lighting on human eyes, environment and/or ecology, and achieve the purpose of friendly environment. During rain and fog, the lamp 100 can provide low color temperature lighting to improve the penetration of lighting into rain and fog and reduce the occurrence of light exposure.

In addition, the lamp 100 can provide abnormality judgment information for the controller 110 or the cloud server 20 to judge the cause of the abnormality, which is further explained below with examples.

As shown in FIG. 1 , one, any one, or each of these current conversion modules may output a feedback signal (a first feedback signal F ₁₃₁ and a second feedback signal F ₁₃₂ ) to the controller 110. For example, the first current conversion module 131 may output the first feedback signal F ₁₃₁ to the controller 110, and the second current conversion module 132 may output the second feedback signal F ₁₃₂ to the controller 110. In addition, the feedback signal may be transmitted to the controller 110 via the interpretation module 140, for example, but the embodiment of the present invention is not limited thereto, and the feedback signal may also be directly transmitted to the controller 110. The feedback signal may carry data related to the current input/output of the current conversion module. For example, the first feedback signal _F131 represents the current and/or voltage actually outputted by the first current conversion module 131 to the first light-emitting device 121, and the second feedback signal _F132 represents the current and/or voltage actually outputted by the second current conversion module 132 to the second light-emitting device 122. The first current conversion module 131 further includes a detection circuit (not shown) that can detect the current and/or voltage outputted to the first light-emitting device 121, and similarly, the second current conversion module 132 further includes a detection circuit (not shown) that can detect the current and/or voltage outputted to the second light-emitting device 122.

The controller 110 is further used to: determine whether the feedback signal (the first feedback signal _F131 and the second feedback signal _F132 ) is within an abnormal range, and, based on the feedback signal being within the abnormal range, generate an abnormal notification signal S1. The controller 110 may transmit the abnormal notification signal S1 to the cloud server 20, and the cloud server 20 may determine the cause of the abnormality. In another embodiment, the feedback signal (the first feedback signal _F131 and the second feedback signal _F132 ) may be transmitted from the controller 110 to the cloud server 20, and the cloud server 20 may determine whether the feedback signal is within an abnormal range.

As shown in Table 2 below, Table 2 lists the feedback signals (the first feedback signal F ₁₃₁ and the second feedback signal F ₁₃₂ ) as values indicating the actual output voltage and current of the current conversion module within the normal range and the abnormal range. Table 2 can be obtained in advance through experiments, simulations, etc., and then stored in the controller 110 or the cloud server 20.

As shown in Table 2, the normal range of the actual output voltage of the current conversion module represented by the feedback signal is, for example, between 65V and 81V. Anything beyond this range is considered an abnormal range. The normal range of the actual output current of the current conversion module represented by the feedback signal is, for example, between 1.85 amperes (Ampere, A) and 2.3A. Anything beyond this range is considered an abnormal range.

When the actual output voltage (feedback signal) of the current conversion module is within the abnormal range and/or the actual output current (feedback signal) of the current conversion module is within the abnormal range, the controller 110 generates a corresponding abnormal notification signal S1 and transmits the abnormal notification signal S1 to the cloud server 20, and the cloud server 20 determines the cause of the abnormality accordingly.

As shown in Table 3 below, the actual output voltage of the power supply 10, the actual output current of the power supply 10, the actual output voltage of the current conversion module and/or the actual output current of the current conversion module are listed, and the corresponding abnormal reasons when they are in abnormal state. Table 3 can be obtained in advance through experiments, simulations, etc., and then stored in the controller 110 or the cloud server 20.

The cloud server 20 can query the abnormal cause corresponding to the abnormal notification signal S1 according to Table 3. For example, when the abnormal notification signal S1 indicates that the actual output voltage and current connection of the current conversion module are abnormal, the cloud server 20 can output an abnormal signal S2 indicating "power supply system abnormality" according to Table 3. The abnormal signal S2 is, for example, text, which can be displayed on a display screen (not shown) connected to the cloud server 20; or, the abnormal signal S2 is, for example, vibration, which can be emitted by a vibrator (not shown) connected to the cloud server 20; or, the abnormal signal S2 is, for example, sound, which can be emitted by a speaker (not shown) connected to the cloud server 20.

In addition, abnormality judgment is not limited to being based only on the actual output voltage and/or current of the current conversion module, but can also be based on the actual output voltage and/or current of the power source 10.

As shown in Table 2 above, Table 2 further lists the feedback signals (the first feedback signal _F131 and the second feedback signal _F132 ) as values indicating the actual output voltage and current of the power supply 10 within the normal range and the abnormal range. For example, the normal range of the actual output voltage of the power supply 10 is between 200V and 240V, and the range beyond this range is the abnormal range. For example, the normal range of the actual output current of the power supply 10 is between 0.65A and 0.7A, and the range beyond this range is the abnormal range.

As shown in FIG. 1 , the controller 110 is further used to determine whether the AC power P1 provided by the power source 10 is within an abnormal range, and based on the AC power P1 being within the abnormal range, generate an abnormal notification signal S1. For example, the controller 110 further includes a detection circuit (not shown), which can detect the actual voltage and/or actual current of the AC power P1 provided by the power source 10. The controller 110 determines whether the detected actual voltage and/or actual current of the AC power P1 is within an abnormal range. Based on the actual voltage and/or actual current of the AC power P1 being within the abnormal range, the controller 110 generates a corresponding abnormal notification signal S1, and outputs the corresponding abnormal notification signal S1 to the cloud server 20 accordingly. In another embodiment, the actual voltage and/or current information of the AC power P1 can be transmitted from the controller 110 to the cloud server 20, and the cloud server 20 determines whether the actual voltage and/or current information of the AC power P1 is within an abnormal range.

The cloud server 20 can query the abnormal cause corresponding to the abnormal notification signal S1 according to Table 3. For example, when the abnormal notification signal S1 indicates that the actual output voltage of the power supply 10, the actual output current of the power supply 10, the actual output voltage of the current conversion module, and the actual output current of the current conversion module are all abnormal, the cloud server 20 can output the abnormal signal S2 indicating "power supply system abnormality" according to Table 3.

Please refer to Figure 2, which shows a functional block diagram of a lamp 200 according to another embodiment of the present invention. The lamp 200 of this embodiment is, for example, a street lamp or other types of lighting devices.

As shown in FIG. 2 , the lamp 200 includes a controller 110, a plurality of light-emitting elements (e.g., at least one first light-emitting element 221, at least one second light-emitting element 222, at least one third light-emitting element 223, and at least one fourth light-emitting element 224), a plurality of current conversion modules (e.g., a first current conversion module 231, a second current conversion module 232, a third current conversion module 233, and a fourth current conversion module 234), an interpretation module 140, and a power conversion module 150. The lamp 200 has similar or identical technical features to the lamp 100, except that the plurality of light-emitting elements of the lamp 200 are different not only in color temperature but also in light type.

In other embodiments, the plurality of light-emitting elements may differ in N or more light-emitting characteristics, where N is, for example, a positive integer equal to or greater than 3. Correspondingly, the number of current conversion modules is, for example, N, and each current conversion module may be coupled to a light-emitting element with the same light-emitting characteristic.

As shown in FIG. 2 , the controller 110 outputs a dimming signal D1 to the interpretation module 140 according to the external environment state. The interpretation module 140 can output the first control signal S ₂₃₁ , the second control signal S ₂₃₂ , the third control signal S ₂₃₃ and the fourth control signal S ₂₃₄ corresponding to the dimming signal D1 to the first current conversion module 231 , the second current conversion module 232 , the third current conversion module 233 and the fourth current conversion module 234 respectively according to the comparison table T1. The first current conversion module 231 outputs the first direct current C1 corresponding to the first control signal S ₂₃₁ to the first light-emitting element 221, the second current conversion module 232 outputs the second direct current C2 corresponding to the second control signal S ₂₃₂ to the second light-emitting element 222, and the third current conversion module 233 outputs the third direct current C1 corresponding to the third control signal S 232 to the second light-emitting element 222. The third direct current C3 of the first light emitting device ₂₂₁ is supplied to the third light emitting device 223, and the fourth current conversion module 234 outputs the fourth direct current C4 corresponding to the fourth control signal S ₂₃₄ to the fourth light emitting device 224. The first light emitting device 221, the second light emitting device 222, the third light emitting device 223 and the fourth light emitting device 224 emit corresponding lighting in response to the external environment state. The first control signal S ₂₃₁ , the second control signal S ₂₃₂ , the third control signal S ₂₃₃ and the fourth control signal S ₂₃₄ are, for example, pulse width modulation signals.

As shown in Table 4 below, the relationship between the dimming signal D1, the first control signal S ₂₃₁ , the second control signal S ₂₃₂ , the third control signal S ₂₃₃ and the fourth control signal S ₂₃₄ is listed (comparison table T2). Table 4 is only an example, and the comparison table of the embodiment of the present invention is not limited by Table 4. The comparison table T2 can be obtained in advance through experiments, simulations, etc., and then stored in the interpretation module 140 or in a storage device (e.g., memory) coupled to the interpretation module 140. The comparison table T2 in Table 4 is only an example and is not used to limit the embodiment of the present invention.

Taking the dimming signal D1 as 5.2V (in the range of 5.01V~5.5V), the interpretation module 140 outputs the first control signal _S231 representing 0% of 5.2V to the first light-emitting device 221, outputs the second control signal S232 representing 70% of 5.2V to the second light-emitting device ₂₂₂ , outputs the third control signal S233 representing 0% of 5.2V to the third light-emitting device ₂₂₃ , and outputs the fourth control signal S234 representing 30% of 5.2V to the fourth light-emitting device ₂₂₄ according to the comparison table T2. The first light emitting device 221, the second light emitting device 222, the third light emitting device 223 and the fourth light emitting device 224 emit light according to the first control signal S ₂₃₁ , the second control signal S ₂₃₂ , the third control signal S ₂₃₃ and the fourth control signal S ₂₃₄ respectively. The light emission of the first light emitting device 221, the light emission of the second light emitting device 222, the light emission of the third light emitting device 223, the light emission of the fourth light emitting device 224 or a mixture of at least one of them can conform to the external environmental state at that time.

As shown in FIG. 2, the first light emitting device 221, the second light emitting device 222, the third light emitting device 223 and the fourth light emitting device 224 are, for example, light emitting diodes, laser diodes or other suitable types of light emitting devices. The first light emitting device 221, the second light emitting device 222, the third light emitting device 223 and the fourth light emitting device 224 are different in light emitting characteristics. For example, the first light emitting device 221 and the second light emitting device 222 are different at least in light emitting light type, and the third light emitting device 223 and the fourth light emitting device 224 are different at least in light emitting light type, and the first light emitting device 221 and the third light emitting device 223 are different at least in light emitting color temperature. In one embodiment, the first light emitting element 221 is a high color temperature dry light type, the second light emitting element 222 is a high color temperature water accumulation light type, the third light emitting element 223 is a low color temperature dry light type, and the fourth light emitting element 224 is a low color temperature water accumulation light type. The aforementioned "high color temperature" is, for example, a color temperature range between 4000K and 10000K, and the "low color temperature" is, for example, a color temperature range between 1000K and 4000K. The aforementioned "water accumulation light type" is, for example, a light type suitable for a water accumulation environment (road surface), and the aforementioned "dry light type" is, for example, a light type suitable for a dry environment (road surface).

As shown in FIG. 2 , the lamp 100 further includes at least one lamp board, each of which can carry at least one light-emitting element or at least two light-emitting elements with the same or different light-emitting characteristics. For example, the lamp 100 further includes a first lamp board 220A, a second lamp board 220B, a third lamp board 220C, and a fourth lamp board 220D. At least one first light-emitting element 221 with the same light-emitting characteristics can be arranged on the first lamp board 220A, at least one second light-emitting element 222 with the same light-emitting characteristics can be arranged on the second lamp board 220B, at least one third light-emitting element 223 with the same light-emitting characteristics can be arranged on the third lamp board 220C, and at least one fourth light-emitting element 224 with the same light-emitting characteristics can be arranged on the fourth lamp board 220D. Each lamp board can be coupled to a corresponding current conversion module to be controlled by the corresponding current conversion module. For example, the first lamp board 220A is coupled to the first current conversion module 231, the second lamp board 220B is coupled to the second current conversion module 232, the third lamp board 220C is coupled to the third current conversion module 233, and the fourth lamp board 220D is coupled to the fourth current conversion module 234.

Each current conversion module outputs direct current to the corresponding light board according to the corresponding control signal to control the light emitting element arranged on the corresponding light board to emit light. For example, the first current conversion module 231 outputs the first direct current C1 to the first lamp board 220A according to the first control signal _S231 to control the first light-emitting element 221 configured on the first lamp board 220A to emit light, the second current conversion module 232 outputs the second direct current C2 to the second lamp board _220B according to the second control signal S232 to control the second light-emitting element 222 configured on the second lamp board 220B to emit light, the third current conversion module 233 outputs the third direct current C3 to the third lamp board 220C according to the third control signal _S233 to control the third light-emitting element 223 configured on the third lamp board 220C to emit light, and the fourth current conversion module 234 outputs the third direct current C4 to the third lamp board 220C according to the fourth control signal _S234 to control the third light-emitting element 223 configured on the third lamp board 220C to emit light. , outputs a fourth direct current C4 to the fourth lamp board 220D to control the fourth light emitting element 224 disposed on the fourth lamp board 220D to emit light.

Please refer to Figure 3, which shows a flow chart of the lighting control method of the lamp 100 in Figure 1.

In step S110, the controller 110 outputs the dimming signal D1 to the interpretation module 140. For example, the controller 110 outputs the dimming signal D1 corresponding to the external environment state to the interpretation module 140, or outputs the dimming signal D1 to the interpretation module 140 according to the dimming command T1.

In step S120, the interpreter module 140 outputs a plurality of control signals corresponding to the dimming signal D1 to a plurality of current conversion modules according to the comparison table T1, wherein the current conversion modules are coupled to a plurality of light-emitting elements. For example, as shown in FIG. 1 , the interpreter module 140 outputs a first control signal S ₁₃₁ corresponding to the dimming signal D1 and a second control signal S ₁₃₂ corresponding to the dimming signal D1 to the first current conversion module 131 and the second current conversion module 132 according to the comparison table T1.

As shown in FIG. 1 , each current conversion module is coupled to a corresponding light-emitting device. For example, the first current conversion module 131 is coupled to the first light-emitting device 121, and the second current conversion module 132 is coupled to the second light-emitting device 122.

In step S130, each current conversion module controls the corresponding light-emitting element to emit light according to the corresponding control signal. For example, as shown in FIG. 1, the first current conversion module 131 controls the first light-emitting element ₁₂₁ to emit light according to the first control signal S131, and the second current conversion module 132 controls the second light-emitting element 122 to emit light according to the second control signal _S132 . The light-emitting of the first light-emitting element 121, the light-emitting of the second light-emitting element 122, or the mixed light thereof can conform to the external environmental state. In this way, by combining multiple light-emitting elements with different light-emitting characteristics, a variety of different light-emitting modes of illumination can be emitted to respond to multiple or variable external environmental states.

The remaining steps of the lighting control method of the lamp 100 have been described above and will not be repeated here. In addition, the lighting control method of the lamp 200 has steps similar to or the same as those of the lighting control method of the lamp 100, which will not be repeated here.

In summary, the embodiment of the present invention proposes a lamp and a lighting control method thereof, wherein the lamp includes a plurality of light-emitting elements with different lighting characteristics, and outputs a plurality of driving currents (e.g., direct current) corresponding to dimming signals to the plurality of light-emitting elements according to a comparison table. By combining a plurality of light-emitting elements with different lighting characteristics, a plurality of different lighting modes can be emitted to respond to a variety of or variable external environmental conditions. In one embodiment, a plurality of light-emitting elements can be arranged on at least one lamp board, and light-emitting elements with the same or different lighting characteristics can be arranged on the same lamp board. The lamp further includes a plurality of current conversion modules, and each lamp board can be coupled to a corresponding current conversion module, so that the light-emitting elements arranged on the same lamp board can be controlled by the corresponding current conversion module.

In summary, although the present disclosure has been disclosed as above by the embodiments, it is not intended to limit the present disclosure. Those with ordinary knowledge in the technical field to which the present disclosure belongs can make various changes and modifications within the spirit and scope of the present disclosure, without departing from the spirit and scope of the present disclosure, and are not limited by the embodiments of the present invention, and are still within the protection scope of the present invention. Therefore, the protection scope of the present disclosure shall be subject to the scope defined by the attached patent application.

10: Power supply 20: Cloud server 100: Lamp 110: Controller 120A: First lamp board 120B: Second lamp board 121: First light emitting element 122: Second light emitting element 131: First current conversion module 132: Second current conversion module 140: Interpretation module 150: Power conversion module C1: First DC C2: Second DC D1: Dimming signal F ₁₃₁ : First feedback signal F ₁₃₂ : Second feedback signal P2: DC P1: AC S ₁₃₁ : First control signal S ₁₃₂ : Second control signal S1: Abnormal notification signal S2: Abnormal signal T1: Dimming command

Claims (14)

A lamp, comprising: A controller for outputting a dimming signal; A plurality of light-emitting elements; A plurality of current conversion modules, coupled to the light-emitting elements and used to individually control the light-emitting of different light-emitting elements; A decoding module, coupled to the current conversion modules and used to output a plurality of control signals corresponding to the dimming signal to the current conversion modules respectively according to a comparison table; Wherein, the light-emitting elements differ in a light-emitting characteristic, and one of the current conversion modules is used to output a feedback signal to the controller; Wherein, each current conversion module is used to output a DC to the corresponding light-emitting element according to the corresponding control signal for direct power supply. A lamp as described in claim 1, wherein the DC television is determined by the comparison table. The lamp as described in claim 1 further includes: A power conversion module coupled to the current conversion modules and the interpretation module, and used to supply power to the current conversion modules and the interpretation module. A lamp as described in claim 1, wherein the controller is used to: determine whether the feedback signal is within an abnormal range; and generate an abnormal notification signal based on the feedback signal being within the abnormal range. A lamp as described in claim 1, wherein the controller is coupled to a power source, and the controller is used to: determine whether an alternating current provided by the power source is within an abnormal range; and generate an abnormal notification signal based on the alternating current being within the abnormal range. A lamp as described in claim 1, wherein the luminous characteristic is at least one of color temperature and light type. The lamp as described in claim 1 further includes a plurality of lamp boards, wherein the light-emitting elements having the same light-emitting characteristics are arranged on the same lamp board, and each current conversion module is coupled to the corresponding lamp board; each current conversion module is used to output the direct current to the corresponding lamp board according to the corresponding control signal to control the light-emitting element arranged on the corresponding lamp board. A lighting control method for a lamp includes: A controller outputs a dimming signal; Based on a comparison table, an interpreter module outputs a plurality of control signals corresponding to the dimming signal to a plurality of current conversion modules respectively, wherein the current conversion modules are coupled to a plurality of light-emitting elements, and the light-emitting elements are different in a lighting characteristic; Each of the current conversion modules outputs a DC to the corresponding light-emitting element according to the corresponding control signal to control the corresponding light-emitting element to emit light; and One of the current conversion modules outputs a feedback signal to the controller. A lighting control method as described in claim 8, wherein the DC television is determined by the comparison table. The luminous control method as described in claim 8 further includes: A power conversion module supplies power to the current conversion modules and the interpretation module. The luminous control method as described in claim 8 further includes: Determining whether the feedback signal is within an abnormal range; and Generating an abnormal notification signal based on the feedback signal being within the abnormal range. The lighting control method as described in claim 8, wherein the controller is coupled to a power source, and the controller is used to: The controller determines whether an alternating current provided by the power source is within an abnormal range; and Based on the alternating current being within the abnormal range, the controller generates an abnormal notification signal. A luminescence control method as described in claim 8, wherein the luminescence characteristic is at least one of color temperature and light type. As described in claim 8, the light-emitting components with the same light-emitting characteristics are arranged on the same light board, and each current conversion module is coupled to the corresponding light board; the light-emitting control method further includes: Each current conversion module outputs the direct current to the corresponding light board according to the corresponding control signal to control the light-emitting component arranged on the corresponding light board to emit light.

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