CN212305733U - Independent DALI conversion module of adjusting luminance - Google Patents
Independent DALI conversion module of adjusting luminance Download PDFInfo
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- CN212305733U CN212305733U CN202022010335.5U CN202022010335U CN212305733U CN 212305733 U CN212305733 U CN 212305733U CN 202022010335 U CN202022010335 U CN 202022010335U CN 212305733 U CN212305733 U CN 212305733U
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Abstract
The utility model relates to a lamps and lanterns control technical field. The utility model discloses an independent DALI conversion module of adjusting luminance, adjust luminance signal output interface, DAC circuit and analog voltage including microcontroller, PWM, microcontroller is used for being connected with DALI controller communication, and microcontroller's PWM signal output part connects the input of PWM signal output interface and DAC circuit of adjusting luminance respectively, and the output termination analog voltage of DAC circuit adjusts luminance signal output interface. The utility model discloses can export multiple dimming signal, can realize that ordinary 0/1-10V and PWM adjust luminance's illumination lamps and lanterns become DALI intelligence lamps and lanterns, let the user can easily change into intelligent illumination under very low cost.
Description
Technical Field
The utility model belongs to the technical field of lamps and lanterns control, specifically relate to an independent DALI conversion module of adjusting luminance.
Background
The intelligent lighting is a distributed lighting control system formed by technologies such as an internet of things technology, a wired/wireless communication technology, a power carrier communication technology, embedded computer intelligent information processing, energy-saving control and the like, so that the intelligent control of lighting equipment is realized. The demand of intelligent lighting is higher and higher in the market.
Dali (digital Addressable Lighting interface) protocol, which is called as digital Addressable Lighting interface protocol, is an international and common open standard in the Lighting field. The DALI protocol has the characteristics of high efficiency, energy conservation, flexible structure, easiness in maintenance, strong functions and the like, and the dimming system based on the DALI protocol has good expandability, so that DALI dimming is one of the good intelligent dimming modes at present.
However, in the DALI dimming lamp in the market at present, the DALI module and the driving circuit are integrated, and when the existing ordinary 0/1-10V and PWM dimming lighting lamp of a user is to be changed into the DALI dimming intelligent lamp, the existing ordinary 0/1-10V and PWM dimming lighting lamp can only be replaced, so that the modification amount is large, the modification is troublesome, and the cost is high.
Disclosure of Invention
An object of the utility model is to provide an independent DALI conversion module of adjusting luminance is used for solving the above-mentioned technical problem who exists.
In order to achieve the above object, the utility model adopts the following technical scheme: an independent DALI dimming conversion module comprises a microcontroller, a PWM dimming signal output interface, a DAC circuit and an analog voltage dimming signal output interface, wherein the microcontroller is used for being in communication connection with a DALI controller, the PWM signal output end of the microcontroller is respectively connected with the PWM dimming signal output interface and the input end of the DAC circuit, and the output end of the DAC circuit is connected with the analog voltage dimming signal output interface.
And the first detection circuit is used for detecting whether the PWM dimming signal output interface is connected with the PWM dimming input end or not and transmitting the detection result to the microcontroller.
Furthermore, the first detection circuit comprises a first voltage detection pin of the microcontroller and a fuse F02, and the first voltage detection pin of the microcontroller is connected to the PWM dimming signal output interface through the fuse F02.
Furthermore, the microcontroller further comprises an overvoltage protection circuit, wherein the overvoltage protection circuit is connected with the first voltage detection pin of the microcontroller and is used for performing overvoltage protection on the first voltage detection pin of the microcontroller.
Furthermore, the overvoltage protection circuit comprises a voltage regulator tube ZD1, the negative end of the voltage regulator tube ZD1 is connected with the first voltage detection pin of the microcontroller, and the positive end of the voltage regulator tube ZD1 is grounded.
Further, the LED lamp further comprises a key switch S1, wherein the key switch S1 is connected in series between the PWM signal output end of the microcontroller and the PWM dimming signal output interface.
And the second detection circuit is used for detecting whether the analog voltage dimming signal output interface is connected with the analog voltage dimming input end or not and transmitting a detection result to the microcontroller.
Furthermore, the second detection circuit comprises a second voltage detection pin of the microcontroller and a resistor R10, and the second voltage detection pin of the microcontroller is connected to the analog voltage dimming signal output interface through the resistor R10.
Furthermore, the system also comprises a half-duplex communication circuit, the microcontroller is in communication connection with the DALI controller through the half-duplex communication circuit, and the half-duplex communication circuit is formed by two optocouplers.
Furthermore, the power supply circuit is also included and is used for supplying power to the microcontroller and the DAC circuit.
The utility model has the advantages of:
the utility model discloses an independent module can output multiple dimming signal, can realize becoming the illumination lamps and lanterns that have ordinary analog voltage (0/1-10V) and PWM adjusted luminance into the intelligent lamps and lanterns that DALI adjusted luminance, lets the user can easily change into intelligent illumination with the illumination lamps and lanterns that have ordinary analog voltage (0/1-10V) and PWM adjusted luminance into at very low cost down.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a circuit diagram of an embodiment of the present invention.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
As shown in fig. 1, an independent DALI dimming conversion module includes a microcontroller, a PWM dimming signal output interface P1, a DAC circuit, and an analog voltage dimming signal output interface P2, the microcontroller U1 is configured to be communicatively connected to the DALI controller U5, a PWM signal output terminal of the microcontroller is connected to the PWM dimming signal output interface P1 and an input terminal of the DAC circuit, respectively, and an output terminal of the DAC circuit is connected to the analog voltage dimming signal output interface P2.
The PWM dimming signal output interface P1 is used for connecting to a PWM dimming input terminal of a lamp adopting PWM dimming, and the analog voltage dimming signal output interface P2 is used for connecting to an analog voltage dimming input terminal of a lamp adopting analog voltage dimming.
In the embodiment, the analog voltage dimming signal output interface P2 is a 0/1-10V dimming signal output interface, but is not limited thereto.
In this embodiment, the DALI controller U5 may be implemented by various existing DALI controllers, and the microcontroller is preferably implemented by an MCU microprocessor U1, which is simple, small, and low in cost, but not limited thereto. In this embodiment, the MCU microprocessor U1 is of a type HC32F005C6PA, but not limited thereto, and in other embodiments, the MCU microprocessor U1 may also be implemented by other types of MCU microprocessors.
In this embodiment, the MCU microprocessor U1 further includes a half-duplex communication circuit, the half-duplex communication circuit is communicatively connected to the DALI controller U5 through the half-duplex communication circuit, the half-duplex communication circuit is formed by two optocouplers UC1 and UC2, and the detailed circuit connection is shown in fig. 1, which is not described in detail. By adopting the half-duplex communication circuit, the circuit structure is simple, the anti-interference capability is strong, but the circuit structure is not limited to this, and in other embodiments, the MCU microprocessor U1 may also be connected to the DALI controller U5 by adopting other communication circuits.
In this embodiment, the PWM signal output terminal PWM2 (pin 19) of the MCU microprocessor U1 is connected to the PWM dimming signal output interface P1, and the PWM signal output terminal PWM1 (pin 17) of the MCU microprocessor U1 is connected to the input terminal of the DAC circuit, for details of the circuit connection, see fig. 1, two PWM signal output terminals are used to output PWM signals respectively, which is easy to implement, and of course, in other embodiments, only one PWM signal output terminal may be used.
In this embodiment, the DAC circuit is implemented by using a digital-to-analog conversion chip U4 of GP8101, an input terminal (pin 3) of the digital-to-analog conversion chip U4 is connected to a PWM signal output terminal PWM1 of the MCU microprocessor U1, an output terminal (pin 6) of the digital-to-analog conversion chip U4 is connected to an analog voltage dimming signal output interface P2, and an output terminal of the digital-to-analog conversion chip U4 outputs a 0-10V signal.
Further, the intelligent dimming circuit further comprises a first detection circuit, wherein the first detection circuit is used for detecting whether the PWM dimming signal output interface P1 is connected with a PWM dimming input end or not, and transmitting a detection result to the MCU microprocessor U1, and the MCU microprocessor U1 performs corresponding alarm and protection according to the detection result, so that the safety and the reliability are improved.
In this embodiment, the first detection circuit includes a first voltage detection pin Vset2 (20 th pin) of the MCU microprocessor U1 and a fuse F02, the first voltage detection pin Vset2 of the MCU microprocessor U1 is connected to the PWM dimming signal output interface P1 through a fuse F02, and the fuse F02 is used for overcurrent protection. The first detection circuit is simple in circuit structure and easy to implement, and in other embodiments, the first detection circuit can also be implemented by other existing voltage detection circuits.
Further, the protection circuit also comprises an overvoltage protection circuit, wherein the overvoltage protection circuit is connected with a first voltage detection pin Vset2 of the MCU microprocessor U1 and is used for performing overvoltage protection on the first voltage detection pin Vset2 of the MCU microprocessor U1 and preventing the MCU microprocessor U1 from being burnt due to overhigh voltage when the PWM dimming signal output interface P1 is in fault connection.
In this embodiment, the overvoltage protection circuit includes a voltage regulator ZD1, a negative terminal of the voltage regulator ZD1 is connected to the first voltage detection pin Vset2 of the MCU microprocessor U1, and a positive terminal of the voltage regulator ZD1 is grounded, so that the circuit is simple in structure, easy to implement, and low in cost.
In this embodiment, the voltage stabilizing value of the voltage regulator ZD1 is 5.5V, but in other embodiments, the voltage stabilizing value of the voltage regulator ZD1 may be selected according to actual needs, which can be easily implemented by those skilled in the art and will not be described in detail.
Further, the MCU dimming control circuit further comprises a key switch S1, the key switch S1 is connected in series between the PWM signal output end PWM2 of the MCU microprocessor U1 and the PWM dimming signal output interface P1, when the first detection circuit detects that the PWM dimming signal output interface P1 is not in error connection, the key switch S1 is pressed to be conducted, and when the PWM dimming signal output interface P1 is in error connection, the situation that the voltage of the PWM signal output end PWM2 of the MCU microprocessor U1 is too high to damage the MCU microprocessor U1 is avoided, and safety and reliability are improved.
Further, the LED dimming circuit also comprises a second detection circuit, wherein the second detection circuit is used for detecting whether the analog voltage dimming signal output interface P2 is connected to the analog voltage dimming input end or not, and transmitting a detection result to the MCU microprocessor U1, and the MCU microprocessor U1 performs corresponding alarm and protection according to the detection result, so that the safety and the reliability are improved.
Specifically, in this embodiment, the second detection circuit includes a second voltage detection pin Vset1 (11 th pin) of the MCU microprocessor U1 and a resistor R10, and the second voltage detection pin Vset1 of the MCU microprocessor U1 is connected to the analog voltage dimming signal output interface P2 through the resistor R10. The second detection circuit is simple in circuit structure and easy to implement, and in other embodiments, the second detection circuit can also be implemented by other existing voltage detection circuits.
In this embodiment, the power supply circuit 1 is further included, the power supply circuit 1 is configured to supply power to the MCU microprocessor U1 and the digital-to-analog conversion chip U4, and the power supply circuit 1 includes a 15V power supply circuit and a 5V power supply circuit, which are configured to respectively supply power to the digital-to-analog conversion chip U4 and the MCU microprocessor U1, and the specific circuit structure is shown in fig. 1 in detail, but not limited thereto, and in other embodiments, the power supply circuit 1 may also be implemented by using other existing power supply circuits.
The working principle is as follows:
when the commercial power switch of a user is closed, the lamp is on, the DALI controller U5 is in standby, the power circuit 1 provides +15V voltage to supply power for the digital-to-analog conversion chip U4 and provides + V5 voltage to supply power for the MCU microprocessor U1, and the system is in standby. When a user operates the DALI controller U5 to send signals such as addressing and dimming to the MCU microprocessor U1 through the optocoupler UC1, the MCU microprocessor U1 performs addressing according to a protocol instruction or outputs a PWM dimming signal with a corresponding percentage to dim the lamp (when a reply signal is required, the MCU microprocessor U1 sends the reply signal back to the DALI controller U5 through the optocoupler UC 2).
When a lamp of a user is a PWM dimming lamp, a PWM dimming input end of the PWM dimming lamp is connected to a PWM dimming signal output interface P1, a 20 th pin of the MCU microprocessor U1 detects a high level of 3-5V (specifically determined according to the level of the PWM signal of the lamp), the PWM dimming signal output interface P1 is judged not to be misconnected, a PWM signal output end PWM2 of the MCU microprocessor U1 outputs a PWM signal for dimming the lamp, and a PWM signal output end PWM1 of the MCU microprocessor U1 is turned off to output the PWM signal; when the PWM dimming signal output interface P1 is misconnected with a lamp for dimming at 0/1-10V, voltage higher than 10V is input, the voltage is clamped to 5.5V by the voltage stabilizing diode ZD1, the 20 th pin of the MCU microprocessor U1 is prevented from being damaged due to overhigh voltage, meanwhile, the 20 th pin of the MCU microprocessor U1 detects 5.5V high level and judges that misconnection is caused, and the system immediately stops the machine for protection after sending alarm information, so that intelligent identification misconnection is realized, and the safety and the reliability are improved.
When a lamp of a user is a lamp with dimming between 0/1 and 10V, the 0/1-10V dimming input end of the lamp with dimming between 0/1 and 10V is connected to the analog voltage dimming signal output interface P2, the 11 th pin of the MCU microprocessor U1 detects the high level of 10-15V, the judgment that the analog voltage dimming signal output interface P2 is not in misconnection is made, the PWM signal output end PWM1 of the MCU microprocessor U1 outputs a PWM signal to the digital-to-analog conversion chip U4, the digital-to-analog conversion chip U4 converts the PWM signal into a corresponding 0/1-10V signal to dim the lamp, and the PWM signal output end PWM2 of the MCU microprocessor U1 is turned off to output; when the analog voltage dimming signal output interface P2 is misconnected to a lamp for PWM dimming, the 11 th pin of the MCU microprocessor U1 detects undervoltage, the judgment is misconnection, the system immediately stops the machine for protection after sending alarm information, the intelligent identification misconnection is realized, and the safety and the reliability are improved.
The utility model discloses an independent module can output multiple dimming signal, can realize becoming the illumination lamps and lanterns that have ordinary 0/1-10V and PWM adjusted luminance into the intelligent lamps and lanterns that DALI adjusted luminance, lets the user can easily change the illumination lamps and lanterns that have ordinary 0/1-10V and PWM adjusted luminance into intelligent illumination under very low cost.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. An independent DALI conversion module that adjusts luminance which characterized in that: the DALI controller comprises a microcontroller, a PWM dimming signal output interface, a DAC circuit and an analog voltage dimming signal output interface, wherein the microcontroller is used for being in communication connection with the DALI controller, the PWM signal output end of the microcontroller is respectively connected with the PWM dimming signal output interface and the input end of the DAC circuit, and the output end of the DAC circuit is connected with the analog voltage dimming signal output interface.
2. The standalone DALI dimming conversion module as claimed in claim 1, wherein: the first detection circuit is used for detecting whether the PWM dimming signal output interface is connected with the PWM dimming input end or not and transmitting a detection result to the microcontroller.
3. The standalone DALI dimming conversion module of claim 2, wherein: the first detection circuit comprises a first voltage detection pin of the microcontroller and a fuse F02, and the first voltage detection pin of the microcontroller is connected with the PWM dimming signal output interface through the fuse F02.
4. The standalone DALI dimming conversion module of claim 3, wherein: the overvoltage protection circuit is connected with a first voltage detection pin of the microcontroller and used for performing overvoltage protection on the first voltage detection pin of the microcontroller.
5. The standalone DALI dimming conversion module of claim 4, wherein: the overvoltage protection circuit comprises a voltage regulator tube ZD1, the negative end of the voltage regulator tube ZD1 is connected with a first voltage detection pin of the microcontroller, and the positive end of the voltage regulator tube ZD1 is grounded.
6. The standalone DALI dimming conversion module according to any of claims 1-5, wherein: the LED lamp also comprises a key switch S1, wherein the key switch S1 is connected between the PWM signal output end of the microcontroller and the PWM dimming signal output interface in series.
7. The standalone DALI dimming conversion module as claimed in claim 1, wherein: the second detection circuit is used for detecting whether the analog voltage dimming signal output interface is connected with the analog voltage dimming input end or not and transmitting a detection result to the microcontroller.
8. The standalone DALI dimming conversion module of claim 7, wherein: the second detection circuit comprises a second voltage detection pin of the microcontroller and a resistor R10, and the second voltage detection pin of the microcontroller is connected with the analog voltage dimming signal output interface through the resistor R10.
9. The standalone DALI dimming conversion module as claimed in claim 1, wherein: the DALI controller is characterized by further comprising a half-duplex communication circuit, the microcontroller is in communication connection with the DALI controller through the half-duplex communication circuit, and the half-duplex communication circuit is formed by two optocouplers.
10. The standalone DALI dimming conversion module as claimed in claim 1, wherein: the power supply circuit is used for supplying power for the microcontroller and the DAC circuit.
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| CN202022010335.5U CN212305733U (en) | 2020-09-15 | 2020-09-15 | Independent DALI conversion module of adjusting luminance |
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| CN202022010335.5U CN212305733U (en) | 2020-09-15 | 2020-09-15 | Independent DALI conversion module of adjusting luminance |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111988898A (en) * | 2020-09-15 | 2020-11-24 | 厦门阳光恩耐照明有限公司 | Independent DALI conversion module of adjusting luminance |
| CN114173452A (en) * | 2021-11-03 | 2022-03-11 | 广东艾迪明电子有限公司 | Compound dimming control system |
-
2020
- 2020-09-15 CN CN202022010335.5U patent/CN212305733U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111988898A (en) * | 2020-09-15 | 2020-11-24 | 厦门阳光恩耐照明有限公司 | Independent DALI conversion module of adjusting luminance |
| CN114173452A (en) * | 2021-11-03 | 2022-03-11 | 广东艾迪明电子有限公司 | Compound dimming control system |
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