JP6281359B2 - Lighting device - Google Patents

Description

  Embodiments described herein relate generally to a lighting device.

  2. Description of the Related Art In recent years, lighting systems that make it possible to individually control a plurality of lighting devices are known. Such a lighting system includes a host device that transmits a signal that instructs control such as turning off, lighting, and changing illuminance to each lighting device as a control signal, and an LED (Light Emitting Diode) according to a control signal received from the host device. A lighting device including a power supply device to be controlled. However, the control signal transmitted from the host device to each lighting device is different for each type of lighting system. Here, the conventional lighting device includes a power supply device corresponding to a specific type of control signal of the lighting system. For this reason, the conventional illuminating device cannot respond to a plurality of types of luminaire control systems of the same model.

"Lighting fixture individual control system T / Flecs (T-Flex) | Lighting control / aviation obstacle light | Products | Toshiba Lighting & Technology Corporation", [online], [Search March 7, 2014], Internet <http: //www.tlt.co.jp/tlt/products/system/t_flecs.htm>

  An object of the present invention is to provide an illuminating device corresponding to a plurality of types of illumination systems.

An illumination device according to an embodiment includes: an illumination unit; a reception unit that receives a control signal instructing control of the illumination unit transmitted from a host device; a standby control signal transmitted from the host device and control of the illumination unit based on the frequency of the control signal for instructing the, from among a plurality of control methods, the identifying unit and for specifying a control method corresponding to the control signal transmitted from the host device; control scheme specified by the specifying unit And a control unit that controls the illumination unit based on the above.

  According to the illumination device of the embodiment, an effect that it is possible to cope with a plurality of types of illumination systems can be expected.

FIG. 1 is a diagram illustrating a configuration example of a lighting system according to the first embodiment. FIG. 2 is a diagram illustrating a configuration example of the illumination device according to the first embodiment. FIG. 3 is a diagram illustrating the types of control signals. FIG. 4 is a diagram illustrating a configuration example of the interface circuit according to the embodiment. FIG. 5 is a timing chart showing the operation of the interface circuit when a bipolar signal whose voltage changes in a range of positive and negative polarities is input to the interface circuit as a control signal. FIG. 6 is a timing chart showing the operation of the interface circuit when a unipolar signal whose voltage changes in a positive range is input to the interface circuit as a control signal. FIG. 7 is a timing chart showing the operation of the interface circuit when a unipolar signal whose voltage changes in a negative range is input to the interface circuit as a control signal. FIG. 8 is a diagram illustrating a functional configuration of the microcomputer according to the first embodiment. FIG. 9 is a flowchart illustrating a procedure of processing executed by the lighting device according to the first embodiment. FIG. 10 is a diagram for explaining a modification of the first embodiment.

  Hereinafter, the illumination system 1 and the illumination device 5 according to the embodiment will be described with reference to the drawings. In the embodiment, the same parts are denoted by the same reference numerals, and redundant description is omitted.

(First embodiment)
First, the illumination system according to the first embodiment will be described with reference to FIGS.

[Configuration of lighting system]
FIG. 1 is a diagram illustrating a configuration example of a lighting system according to the first embodiment. A lighting system 1 shown in FIG. 1 is a system that realizes control and monitoring of a lighting device installed in a home or office. For example, the lighting system 1 may acquire information on an environment where the lighting device is installed using a sensor or the like, and may control the lighting device based on the acquired information.

  In the illumination system 1 shown in FIG. 1, a host device 2 and a plurality of communication units 3 and 4 are connected. Moreover, the communication part 3 is connected with the some illuminating devices 5-7. The communication unit 4 is connected to the lighting device 8. The lighting device 5 includes an LED 9 and a power supply control unit 10. The LED 9 illuminates an arbitrary place. The LED 9 is an example of an illumination unit. The power control unit 10 controls the LED 9. Moreover, the following description is abbreviate | omitted as the illuminating devices 6-8 exhibit the same function as the illuminating device 5. FIG. Moreover, the number of the communication parts 3 and 4 and the illuminating devices 5 to 8 included in the lighting system 1 illustrated in FIG.

  The host device 2 outputs a control signal that instructs the communication unit 3 and the communication unit 4 to control the lighting fixture. For example, the host device 2 outputs a control signal instructing arbitrary control to the communication unit 3 such as turning on / off the LED 9 of the lighting device 5, changing the illuminance, changing the light color, and the like. The host device 2 can use any type of control method to control the lighting fixture. For example, the host device 2 outputs control signals corresponding to various control methods such as DALI (Digital Addressable Lighting Interface) and PWM (Pulse Width Modulation) in order to control the lighting fixture.

  Here, the host device 2 outputs a different control signal for each control method. For example, the host device 2 determines whether there is a falling edge when the control signal indicating the control content at the rising or falling position of the voltage, or dividing the pulse at a certain period, depending on the type of control method. A control signal indicating the control content depending on the presence, a control signal indicating the control content by pulse width modulation, and the like are output. Further, the host device 2 outputs a control signal in which the voltage changes in the range of both positive and negative poles and a control signal in which the voltage changes in either the positive or negative range according to the type of control method.

  For example, the host device 2 outputs a control signal based on a predetermined control method that indicates a control content at a rising or falling position of the voltage, which is a bipolar signal whose voltage changes in a range of positive and negative polarities. Further, when the host device 2 outputs a DALI control signal, the host device 2 is a unipolar signal whose voltage changes in one of the positive and negative ranges. A control signal indicating the control content is output depending on whether it exists or rises. Further, when outputting a control signal using PWM, the host device 2 outputs a control signal indicating a control content by modulation of a pulse width, which is a unipolar signal.

  Here, it is convenient if the control method can be discriminated by the frequency of the control signal output by the host device 2. However, when the frequency of the control signal in the predetermined control method is about 3.3 kHz to 10 kHz, the frequency of the control signal in the PWM control method is about 100 Hz to 1 kHz, and the control signal in the DALI control method The frequency of is 1.2 kHz or more and less than 2.4 kHz. Therefore, although it is possible to discriminate by frequency between DALI and other control methods, it is difficult to discriminate by frequency between a predetermined control method and PWM. Therefore, the host device 2 may output a standby control signal for maintaining the state as it is to the lighting device 5 in a predetermined control method, and the frequency of the standby control signal is 2.4 kHz or higher or 100 Hz. Less than (or 100 Hz or less). Therefore, it is possible to determine whether the control method is the predetermined control method, PWM, or DALI by determining the standby control signal for the predetermined control method and the frequency of the control signal for PWM and DALI. It becomes possible.

  The communication unit 3 is a relay device that relays communication between the host device 2 and each of the lighting devices 5 to 7. For example, when the communication unit 3 receives a control signal indicating the control content for the LED 9 from the host device 2, the communication unit 3 outputs the received control signal to the lighting device 5 having the LED 9. In addition, the communication unit 3 receives a response signal indicating a response to the completion of control of the LED 9 based on the control content indicated by the control signal or a notification signal indicating the state of the LED 9 from the lighting device 5. The response signal or notification signal thus transmitted is transmitted to the host device 2. As a result, the host device 2 can grasp that the control of the LED 9 is completed and the dimming state of the LED 9. The communication unit 4 exhibits the same function as that of the communication unit 3 and will not be described.

  The illuminating device 5 is an illuminating device installed in a home, an office, etc., for example. The illumination device 5 includes an LED 9 and a power supply control unit 10. The LED 9 is a replaceable illumination. The power control unit 10 controls the LED 9. Moreover, the illuminating device 5 becomes a unit which performs installation or replacement | exchange, when installing and updating the illumination system 1, similarly to the conventional illuminating device.

[Configuration of Power Supply Control Unit 10]
Hereinafter, a configuration example of the power supply control unit 10 will be described with reference to FIG. FIG. 2 is a diagram illustrating a configuration example of the illumination device according to the first embodiment. As shown in FIG. 2, the power supply control unit 10 includes a power supply circuit 11, an interface circuit 12, a microcomputer 13, and a control circuit 14. Further, the power supply circuit 11 is connected to a power supply for power supplied to the LED 9.

[Power supply circuit 11]
The power supply circuit 11 is a circuit that changes the power supplied to the LED 9 in accordance with control by the control circuit 14. For example, the power supply circuit 11 receives supply of power from a power supply. When the power supply circuit 11 receives the control signal from the control circuit 14, the power supply circuit 11 controls the amount of power supplied from the power supply to the LED 9 according to the received control signal, thereby turning on / off the LED 9. Change illuminance, change light color, etc.

[Interface circuit 12]
The interface circuit 12 does not know whether the host device 2 outputs a bipolar signal or a unipolar signal. An example of a control signal output from the higher-level device 2 will be described with reference to FIG. FIG. 3 is a diagram illustrating the types of control signals. In FIG. 3, a plurality of examples of control signals that may be output by the host device 2 are described.

  For example, as shown in FIG. 3A, the host device 2 may output a bipolar signal whose voltage changes in a positive / negative bipolar range as a control signal. Further, the host device 2 can be a unipolar signal whose voltage changes in a positive range as shown in FIG. 3B, or a voltage that changes in a negative range as shown in FIG. In some cases, a unipolar signal is output as a control signal. Here, the interface circuit 12 performs the following processing so that the microcomputer 13 can identify the control content regardless of the control signal. In other words, the interface circuit 12 includes a first half-wave rectified signal that is a rectified signal obtained by half-wave rectifying the control signal to the positive side, and a second half-wave that is a rectified signal obtained by half-wave rectifying the control signal to the negative side. A rectified signal is generated. The interface circuit 12 outputs a specific half-wave rectified signal to the microcomputer 13 when the specific half-wave rectified signal has a pulse among the first half-wave rectified signal and the second half-wave rectified signal. . In addition, the interface circuit 12 has a specific half-wave rectified signal that has no pulse among the first half-wave rectified signal and the second half-wave rectified signal, and is different from the specific half-wave rectified signal. When the wave rectification signal has a pulse, the half wave rectification signal having this pulse is output to the microcomputer 13.

  Thus, the interface circuit 12 outputs a half-wave rectified signal having a pulse to the microcomputer 13. As a result, even when a multipolar signal or a unipolar signal is input as a control signal, the interface circuit 12 outputs a half-wave rectified signal that allows the microcomputer 13 to identify the control content to the microcomputer 13. Can do. Further, the microcomputer 13 only needs one system for processing half-wave rectified signals.

  Next, a configuration example of the interface circuit 12 will be described with reference to FIG. FIG. 4 is a diagram illustrating a configuration example of the interface circuit 12 according to the embodiment. In the example illustrated in FIG. 4, the interface circuit 12 includes a rectifying unit 15, an integrating circuit 30 a, an inverter 30 b, an AND circuit 30 c, and an OR circuit 30 d.

  The rectification unit 15 inputs control signals from two signal lines, outputs the control signal input from one signal line and the output on the negative side, and outputs the control signal input from the other signal line. Output together with the output on the negative electrode side. Here, for example, the input of the control signal from one signal line is input # 1, the input of the control signal from the other signal line is input # 2, and the output that combines the input # 1 and the negative output is combined. Is an output # 1, and an output obtained by combining the input # 2 and the negative output is an output # 2. That is, the rectifying unit 15 outputs a first half-wave rectified signal half-wave rectified with a positive polarity and a second half-wave rectified signal half-wave rectified with a negative polarity with respect to the control signal. To do. The rectification unit 15 is a rectification circuit realized by, for example, a circuit including a diode and a transformer connected in a bridge shape, and is described with a diode symbol and a diamond figure surrounding the diode symbol. Note that the first half-wave rectified signal corresponds to the output # 1, and the second half-wave rectified signal corresponds to the output # 2.

  The output # 1 is input to the OR circuit 30d. The output # 1 is input to the integration circuit 30a. The output # 2 is input to the AND circuit 30c.

  The integration circuit 30a is a circuit that outputs a voltage having a waveform equal to the time integration of the waveform of the input voltage. The output terminal of the integrating circuit 30a is connected to the input terminal of the inverter 30b. For example, the integration circuit 30a outputs a voltage signal having a waveform equal to the time integration of the voltage waveform of the output # 1 to the inverter 30b.

  The inverter 30b inverts and outputs the logic level of the input voltage. The output terminal of the inverter 30b is connected to one input terminal of the two input terminals of the AND circuit 30c. For example, the inverter 30b reverses the logic level of the voltage signal output from the integration circuit 30a and outputs the inverted signal to the AND circuit 30c.

  The AND circuit 30c outputs a signal having a logic level “1” when the logic levels of the two input voltages are “1 (H)”. The AND circuit 30c outputs a signal having a logic level “0” when the logic level of at least one of the two input voltages is “0 (L)”. The output terminal of the AND circuit 30c is connected to one input terminal of the two input terminals of the OR circuit 30d. For example, when the logic level of the output # 2 and the logic level of the input voltage from the inverter 30b are “1”, the AND circuit 30c outputs a signal having a voltage of the logic level “1” to the OR circuit 30d. The AND circuit 30c ORs the signal of the voltage of the logic level “0” when at least one of the logic level of the output # 2 and the logic level of the input voltage from the inverter 30b is “0”. Output to circuit 30d.

  The OR circuit 30d outputs a signal having a logic level “0” when the logic levels of the two input voltages are “0”. The OR circuit 30d outputs a signal having a voltage of logic level “1” when the logic level of at least one of the two input voltages is “1”. The output terminal of the OR circuit 30d is connected to the microcomputer 13. For example, the OR circuit 30d outputs a signal having a voltage of logic level “0” to the microcomputer 13 when the logic level of the output # 1 and the logic level of the input voltage from the AND circuit 30c are “0”. The OR circuit 30d outputs a signal having a voltage of logic level “1” when at least one of the logic level of the output # 1 and the logic level of the input voltage from the AND circuit 30c is “1”. Output to the microcomputer 13.

  Here, when a bipolar signal whose voltage changes in the range of positive and negative polarities is input to the interface circuit 12 as a control signal, a monopolar signal whose voltage changes in the positive range is input as a control signal, and The operation of the interface circuit 12 in each case when a unipolar signal whose voltage changes in a negative range is input as a control signal will be described with reference to FIGS.

  FIG. 5 is a timing chart showing the operation of the interface circuit 12 when a bipolar signal whose voltage changes in the range of positive and negative polarities is input to the interface circuit 12 as a control signal. In FIG. 5, “input” indicates an input control signal. “Output # 1” indicates a signal of output # 1. “Integral output” indicates a signal output from the inverter 30b. “Output # 2” indicates a signal of output # 2. “AND output” indicates a signal output from the AND circuit 30c. “Combined output” indicates a signal output from the OR circuit 30d. The same applies to FIGS. 6 and 7 described later.

  As shown in FIG. 5, when a bipolar signal is input as a control signal, a first half-wave rectified signal (output # 1) that is half-wave rectified with a positive polarity with respect to the control signal is converted into an OR circuit 30d and As a result of the logic level of the signal input to the integration circuit 30a and output from the integration circuit 30a being “1”, the logic level of the signal output from the inverter 30b to the AND circuit 30c is “0” (integration output). In addition, a second half-wave rectified signal (output # 2) that is half-wave rectified with a negative polarity with respect to the control signal is input to the AND circuit 30c. Since the AND circuit 30c receives the signal having the logic level “0” from the inverter 30b, the AND circuit 30c inputs the signal having the logic level “0” to the OR circuit 30d. Therefore, the OR circuit 30d outputs the first half-wave rectified signal as it is to the microcomputer 13 (combined output) because the signal whose logic level is “0” is input from the AND circuit 30c. Therefore, the interface circuit 12 can output a control signal that allows the microcomputer 13 to identify the control content to the microcomputer 13 even when the host device 2 transmits a bipolar signal as a control signal.

  FIG. 6 is a timing chart showing the operation of the interface circuit 12 when a unipolar signal whose voltage changes in a positive range is input to the interface circuit 12 as a control signal. As shown in FIG. 6, when a unipolar signal whose voltage changes in a positive range is input as a control signal, a first half-wave rectified signal (output) that is half-wave rectified with a positive polarity with respect to the control signal. # 1) is input to the OR circuit 30d and the integration circuit 30a, and as a result of the logic level of the integration circuit 30a being “1”, the logic level of the signal output from the inverter 30b to the AND circuit 30c is “0” (integration output). It becomes. In addition, a second half-wave rectified signal (output # 2) that is half-wave rectified with a negative polarity with respect to the control signal is input to the AND circuit 30c. Here, the output # 2 is a signal whose logic level is “0”. As described above, since the signal having the logic level “0” is input from the two input terminals, the AND circuit 30c inputs the signal having the logic level “0” to the OR circuit 30d. Therefore, the OR circuit 30d outputs the first half-wave rectified signal as it is to the microcomputer 13 (combined output) because the signal whose logic level is “0” is input from the AND circuit 30c. Therefore, the interface circuit 12 outputs to the microcomputer 13 a control signal that allows the microcomputer 13 to identify the control contents even when the host device 2 transmits a unipolar signal whose voltage changes in a positive range as a control signal. can do.

  FIG. 7 is a timing chart showing the operation of the interface circuit 12 when a unipolar signal whose voltage changes in a negative range is input to the interface circuit 12 as a control signal. As shown in FIG. 7, when a unipolar signal whose voltage changes in a negative range is input as a control signal, a first half-wave rectified signal (output) that is half-wave rectified with a positive polarity with respect to the control signal. # 1) is input to the OR circuit 30d and the integration circuit 30a, and as a result of the logic level of the integration circuit 30a becoming "0", the logic level of the signal output from the inverter 30b to the AND circuit 30c is "1" (integration output) It becomes. In addition, a second half-wave rectified signal (output # 2) that is half-wave rectified with a negative polarity with respect to the control signal is input to the AND circuit 30c. Thus, since the signal having the logic level “1” is input from the inverter 30b, the AND circuit 30c inputs the second half-wave rectified signal to the OR circuit 30d. Therefore, since the signal (output # 1) having the logic level “0” is input, the OR circuit 30d outputs the second half-wave rectified signal to the microcomputer 13 as it is (combined output). Therefore, the interface circuit 12 outputs to the microcomputer 13 a control signal that allows the microcomputer 13 to identify the control contents even when the host device 2 transmits a unipolar signal whose voltage changes in a negative range as a control signal. can do.

[Microcomputer 13]
Returning to FIG. 2, the description will be continued. The microcomputer 13 is a microcontroller that exhibits a predetermined function by executing a program prepared in advance. For example, the microcomputer 13 is realized by an integrated circuit such as an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA). The The microcomputer 13 may be realized by, for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit), or the like.

  Here, the microcomputer 13 exhibits the following functions by executing a program prepared in advance. First, the microcomputer 13 receives the signal rectified by the interface circuit 12. In such a case, the microcomputer 13 specifies the control method of the host device 2 using the rectified signal. That is, the microcomputer 13 specifies a control method corresponding to the control signal received by the power supply control unit 10. Then, the microcomputer 13 derives the control content indicated by the received signal in accordance with the specified control method, and outputs an execution instruction for the derived control content to the control circuit 14.

  Hereinafter, an example of a functional configuration of the microcomputer 13 will be described with reference to FIG. FIG. 8 is a diagram illustrating a functional configuration of the microcomputer according to the first embodiment. In the example illustrated in FIG. 8, the microcomputer 13 includes a receiving unit 16, a specifying unit 17, and a plurality of control units 18 to 20.

  The receiving unit 16 receives control signals (first half-wave rectified signal and second half-wave rectified signal) that have been half-wave rectified from the interface circuit 12. For example, when receiving the control signal from the interface circuit 12, the receiving unit 16 selects a control signal suitable for identifying the control content from the received control signals.

  Here, when the receiving unit 16 does not receive the designation of the control unit from the specifying unit 17 such as when the control signal is received for the first time after the installation of the lighting device 5, the receiving unit 16 receives the control signal received from the interface circuit 12. Is output to the specifying unit 17 for the time interval. In such a case, when the control method is a predetermined control method in which the control signal is transmitted with a bipolar signal, the above-described standby control signal is half-wave rectified from the interface circuit 12 to the specifying unit 17. A first half-wave rectified signal is output. And the receiving part 16 receives the control signal received from the interface circuit 12 from the specific | specification part 17, when the instruction | indication of the control part used as the output destination of a control signal is received from the specific | specification part 17 among the control parts 18-20. Send to the specified control unit.

  The specifying unit 17 specifies a control method corresponding to the control signal received by the lighting device 5. For example, the specifying unit 17 receives the signal output from the receiving unit 16 for a predetermined time interval. And the specific | specification part 17 specifies the control system corresponding to the control signal which the illuminating device 5 received based on the frequency of the received signal.

  Hereinafter, as an example of processing executed by the specifying unit 17, whether the control method corresponding to the control signal received by the lighting device 5 is DALI, PWM, or a predetermined control method, that is, DALI, PWM. An example of a process for determining whether the control method is other than will be described. In addition, embodiment is not limited to this, The specific | specification part 17 should just specify the control system corresponding to the control signal which the illuminating device 5 received according to the characteristic of the control signal.

  First, the specifying unit 17 determines whether the frequency of the received signal is a frequency of 2.4 kHz or more or less than 100 Hz. When determining that the frequency of the received signal is a frequency of 2.4 kHz or more or less than 100 Hz, the specifying unit 17 sets a control method corresponding to the control signal received by the lighting device 5 to a predetermined method other than DALI and PWM. Specified as the control method.

  On the other hand, if the specifying unit 17 determines that the frequency of the received signal is not 2.4 kHz or more or less than 100 Hz, whether or not the frequency of the received signal is a frequency within a range of 100 Hz to 1 kHz. Determine. When the specifying unit 17 determines that the frequency of the received signal is in the range of 100 Hz to 1 kHz, the specifying unit 17 specifies the control method corresponding to the control signal received by the lighting device 5 as PWM.

  On the other hand, if the specifying unit 17 determines that the frequency of the received signal is not within the range of 100 Hz to 1 kHz, the frequency of the received signal is within the range of 1.2 kHz to less than 2.4 kHz. It is determined whether or not there is. If the specifying unit 17 determines that the frequency of the received signal is within the range of 1.2 kHz or more and less than 2.4 kHz, the control method corresponding to the control signal received by the lighting device 5 is set to DALI. Identify.

  In addition, the specifying unit 17 derives control contents from the control signal in accordance with the specified control method, and controls the LED 9 to control the derived contents, that is, a control unit corresponding to the specified control method. Instruct the receiver 16. For example, the specifying unit 17 stores in advance that the control unit 18 corresponds to a predetermined control method, the control unit 19 corresponds to DALI, and the control unit 20 corresponds to PWM. The specifying unit 17 notifies the receiving unit 16 of the control unit 18 when the specified control method is a predetermined control method. When the specified control method is DALI, the specifying unit 17 notifies the receiving unit 16 of the control unit 19. When the specified control method is PWM, the control unit 20 is notified to the reception unit 16.

  The control units 18 to 20 derive control contents from the control signals in accordance with different control methods, and execute control of the derived contents on the LED 9. For example, the control unit 18 is a control unit corresponding to a predetermined control method, and when a control signal subjected to half-wave rectification is received, the control content indicated by the received control signal conforms to the rules of the predetermined control method. Deriving and instructing the control circuit 14 to reflect the derived control content. The control unit 19 is a control unit corresponding to DALI. When a control signal subjected to half-wave rectification is received, the control content indicated by the received control signal is derived according to the DALI rules, and the derived control is performed. The control circuit 14 is instructed to reflect the contents. The control unit 20 is a control unit corresponding to PWM, and when a control signal that has been half-wave rectified is received, the control content indicated by the received control signal is derived according to the PWM rules, and the derived control. The control circuit 14 is instructed to reflect the contents.

[Control circuit 14]
Returning to FIG. 2, the description will be continued. The control circuit 14 reflects the control content specified from the control signal by the microcomputer 13 on the LED 9. For example, when the control circuit 14 receives the control contents such as turning on / off the LED 9, changing the illuminance, changing the light color from the microcomputer 13, the control circuit 14 controls the power supply circuit 11 to reflect the received control contents. Thus, the control content is reflected on the LED 9.

[Procedure for Processing by Lighting Device 5]
Next, referring to FIG. 9, the flow of processing for specifying a control method corresponding to the control signal from the control signal received by the lighting device 5 and controlling the LED 9 with the specified control method will be described. FIG. 9 is a flowchart illustrating a procedure of processing executed by the illumination device 5 according to the first embodiment. As shown in FIG. 9, the receiving unit 16 outputs the control signal received from the interface circuit 12 to the specifying unit 17 for a predetermined time interval (step S101).

  Then, the specifying unit 17 receives the signal output from the receiving unit 16 for a predetermined time interval. And the specific | specification part 17 determines whether the frequency of the received signal is 2.4 kHz or more or less than 100 Hz (step S102). When the specifying unit 17 determines that the frequency of the received signal is a frequency of 2.4 kHz or more or less than 100 Hz (step S102; Yes), the control method corresponding to the control signal received by the lighting device 5 is: It is specified as a predetermined control method (step S103). Since the specified control method is the predetermined control method, the specifying unit 17 notifies the receiving unit 16 of the control unit 18 (step S104). When the control unit 18 is notified, the receiving unit 16 transmits a control signal received from the interface circuit 12 to the control unit 18 (step S105). Upon receiving the control signal, the control unit 18 derives the control content indicated by the received control signal in accordance with the rules of a predetermined control method, and instructs the control circuit 14 to reflect the derived control content (step S106). . The control circuit 14 reflects the control content on the LED 9 (step S107) and ends the process.

  On the other hand, if the specifying unit 17 determines that the frequency of the received signal is not 2.4 kHz or higher and is not less than 100 Hz (step S102; No), the frequency of the received signal is 100 Hz or higher. It is determined whether or not the frequency is within a range of 1 kHz or less (step S108). When the identifying unit 17 determines that the frequency of the received signal is a frequency within the range of 100 Hz to 1 kHz (step S108; Yes), the control method corresponding to the control signal received by the lighting device 5 is The PWM is specified (step S109). And since the specified control system is PWM, the specific | specification part 17 notifies the control part 19 to the receiving part 16 (step S110). When the control unit 19 is notified, the receiving unit 16 transmits the control signal received from the interface circuit 12 to the control unit 19 (step S111). When receiving the control signal, the control unit 19 derives the control content indicated by the received control signal in accordance with the PWM protocol, and instructs the control circuit 14 to reflect the derived control content (step S112). The control circuit 14 reflects the control content on the LED 9 (step S113) and ends the process.

  On the other hand, when the specifying unit 17 determines that the frequency of the received signal is not in the range of 100 Hz to 1 kHz (step S108; No), the frequency of the received signal is 1.2 kHz to less than 2.4 kHz. It is determined whether or not the frequency is within the range (step S114). If the identifying unit 17 determines that the frequency of the received signal is not within the range of 1.2 kHz or more and less than 2.4 kHz (step S114; No), the process ends. Moreover, when the specific | specification part 17 determines with the frequency of the received signal being the frequency in the range of 1.2 kHz or more and less than 2.4 kHz (step S114; Yes), it is set as the control signal which the illuminating device 5 received. The corresponding control method is specified as DALI (step S115). And since the specified control system is DALI, the specific | specification part 17 notifies the control part 20 to the receiving part 16 (step S116). When the control unit 20 is notified, the receiving unit 16 transmits a control signal received from the interface circuit 12 to the control unit 20 (step S117). When receiving the control signal, the control unit 20 derives the control content indicated by the received control signal in accordance with the DALI protocol, and instructs the control circuit 14 to reflect the derived control content (step S118). The control circuit 14 reflects the control content on the LED 9 (step S119), and ends the process.

[Effect of the first embodiment]
As described above, the lighting device 5 outputs the first half-wave rectified signal with the positive polarity by half-wave rectification with respect to the control signal, and also performs the second half-wave rectification with the negative polarity. A rectification unit 15 that outputs a wave rectification signal is provided. In addition, the lighting device 5 has a specific half-wave rectification signal (first half-wave rectification signal) out of the first half-wave rectification signal and the second half-wave rectification signal. The LED 9 is controlled based on the wave rectification signal, and the specific half wave rectification signal does not have a pulse and is different from the specific half wave rectification signal (second half wave rectification signal). When has a pulse, the control part 18-20 which controls LED9 based on the half-wave rectification signal which has a pulse is comprised. Thereby, the illuminating device 5 controls LED9 based on the half-wave rectification signal which can identify the control content, even if it is a case where a bipolar signal or a monopolar signal is input as a control signal. Therefore, the illuminating device 5 can respond to a plurality of types of control methods. Further, the microcomputer 13 of the lighting device 5 requires only one system for processing half-wave rectified signals.

  Moreover, the illuminating device 5 sets the frequency of the standby control signal in a predetermined control method to 2.4 kHz or more or less than 100 Hz (or 100 Hz or less). And the illuminating device 5 specifies the control system corresponding to the control signal which the illuminating device 5 received out of a predetermined | prescribed control system, PWM, and DALI according to the value of the frequency of a standby control signal and a control signal. Therefore, the illuminating device 5 can specify a control system according to a frequency.

  The illumination system 1 described above may be implemented in various different forms other than the above embodiment. Therefore, in the following, various modified examples of the illumination system 1 will be described.

[Modification of First Embodiment]
For example, in the first embodiment, the frequency of the standby control signal in the predetermined control method is set to 2.4 kHz or more or less than 100 Hz (or 100 Hz or less), and the lighting device 5 uses the frequencies of the standby control signal and the control signal. The case has been described in which the control method corresponding to the control signal received by the lighting device 5 is specified from the predetermined control method, PWM, and DALI according to the value of. However, the illuminating device 5 can specify a control method corresponding to the control signal from among a plurality of control methods using other methods.

  Here, a half-wave rectified signal obtained by half-wave rectifying a normal standby control signal (frequency 0.9 kHz to 1.3 kHz) of a predetermined control method and a PWM control signal (frequency 1 kHz, on-duty 10%) are half The half-wave rectified signal subjected to wave rectification appears to have substantially the same waveform, and it is difficult to discriminate a predetermined control method and PWM from the half-wave rectified signal. Therefore, for example, as shown in FIG. 10, the pulse period of the standby control signal is set to T1 (for example, 0.002 seconds) and T2 (to be distinguished from a control signal such as PWM having a constant pulse period. For example, the period of the pulse of the standby control signal can be made indefinite. In this case, when the period of the pulse of the signal output from the receiving unit 16 is indefinite, the specifying unit 17 specifies a control method corresponding to this signal as a predetermined control method and outputs it from the receiving unit 16. When the pulse period of the received signal is constant, the control method corresponding to this signal is specified as a known control method that the pulse period of the PWM or other control signal is constant. In addition, FIG. 10 is a figure for demonstrating the modification of 1st Embodiment.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be made to the above-described embodiment. In addition, it is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention.

2 Host device 5 Lighting device 9 LED
DESCRIPTION OF SYMBOLS 10 Power supply control part 11 Power supply circuit 12 Interface circuit 13 Microcomputer 14 Control circuit 16 Reception part 17 Identification part 18, 19, 20 Control part 30a Integration circuit 30b Inverter 30c AND circuit 30d OR circuit

Claims (4)

An illumination unit;
A receiving unit that receives a control signal instructing control of the illumination unit transmitted from a host device;
A control method corresponding to the control signal transmitted from the host device out of a plurality of control methods based on the standby control signal transmitted from the host device and the frequency of the control signal instructing control of the illumination unit A specific part for identifying
A control unit for controlling the illumination unit based on the control method specified by the specifying unit;
An illumination device comprising: The control signal received by the receiving unit is half-wave rectified with positive polarity to output a first half-wave rectified signal, and half-wave rectified with negative polarity to generate a second half-wave rectified signal. Output rectifier;
Further comprising
The lighting device according to claim 1, wherein the control unit controls the lighting unit using any one of the half-wave rectified signals output from the rectifying unit. An illumination unit;
A receiving unit that receives a control signal instructing control of the illumination unit transmitted from a host device;
Corresponding to the control signal transmitted from the higher-level device among a plurality of control methods based on the standby control signal transmitted from the higher-level device and the period of the control signal pulse instructing the control of the illumination unit A specific part for specifying a control method;
A control unit for controlling the illumination unit based on the control method specified by the specifying unit;
An illumination device comprising: The control signal received by the receiving unit is half-wave rectified with positive polarity to output a first half-wave rectified signal, and half-wave rectified with negative polarity to generate a second half-wave rectified signal. Output rectifier;
Further comprising
The lighting device according to claim 3, wherein the control unit controls the lighting unit using one of the half-wave rectified signals output from the rectifying unit.

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