Unified control circuit for lighting and extinguishing of lamps and electronic equipment

Abstract

The utility model relates to the technical field of lamp control, in particular to a lamp on-off unified control circuit and electronic equipment. Comprising a power conversion module and a signal processing module. The signal processing module comprises a data sampling unit, a logic processing unit and a signal output unit; the input end of the power conversion module is connected with the DC signal source, and the output end is connected with the first input end of the signal processing module. The second input end of the signal processing module is connected with a dimming signal source through the input end of the data sampling unit, and the output end of the data sampling unit is connected with the input end of the logic processing unit; the output end of the logic processing unit is connected with the input end of the signal output unit, the output end of the signal output unit is connected with an external lamp load, and the logic processing unit is used for outputting a lamp turn-off signal if the duty ratio of the dimming signal is smaller than a preset duty ratio. According to the application, the influence on the growth of crops due to inconsistent lighting and extinguishing of lamps can be avoided, so that the efficiency and quality of agricultural production are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lamp control, and in particular to a unified control circuit for turning on and off lamps and an electronic device. BACKGROUND

[0002] In the existing market environment, the power supply of a lamp is controlled by receiving a PWM (pulse width modulation) signal. However, there is a common problem in the design of many power supplies, that is, when the duty cycle of the input PWM signal is lower than a certain threshold, for example, between 5% and 7%, the lamp power supply cannot correctly identify the signal, resulting in that the lamp cannot respond normally, and some lamps turn on prematurely. This inconsistent light performance not only affects the visual effect, but also adversely affects the growth of crops in application scenarios with strict lighting requirements, such as plant cultivation, thereby reducing yield and quality.

[0003] In view of the above problems, the centralized control of lamps is challenging, especially in scenarios where multiple lamps need to work together to achieve specific lighting requirements. Therefore, how to improve the lamp control technology is a technical breakthrough for application fields with strict lighting requirements such as plant lighting, which helps to improve the efficiency and quality of agricultural production. CONTENT OF THE INVENTION

[0004] In order to overcome the deficiencies of the prior art, the present application provides a unified control circuit for turning on and off lamps and an electronic device to avoid the influence of inconsistent turning on and off of lamps on the growth of crops, thereby improving the efficiency and quality of agricultural production.

[0005] The technical solution adopted by the present application to solve its technical problems is:

[0006] In a first aspect, the present application provides a unified control circuit for turning on and off lamps, comprising: a power conversion module and a signal processing module; the signal processing module comprises a data sampling unit, a logic processing unit and a signal output unit;

[0007] The input end of the power conversion module is connected to an external DC signal source, and the output end is connected to the first input end of the signal processing module, for converting the first DC signal output by the DC signal source into a second DC signal suitable for the signal processing module, and then inputting the second DC signal into the signal processing module;

[0008] The second input end of the signal processing module is connected to an external dimming signal source through the input end of the data sampling unit, and the output end of the data sampling unit is connected to the input end of the logic processing unit, for sampling the dimming signal sent by the dimming signal source and sending the sampled dimming signal to the logic processing unit;

[0009] An output end of the logic processing unit is connected to an input end of the signal output unit, and an output end of the signal output unit is connected to an external lamp load, for outputting a light-off signal when a duty cycle of the dimming signal is less than a preset duty cycle, and outputting the light-off signal to each lamp load through the signal output unit.

[0010] According to one embodiment of the present application, the logic processing unit comprises a single-chip microcomputer, a first resistor and a second resistor.

[0011] A first input end of the single-chip microcomputer is connected to an output end of the power conversion module, for receiving a 5V direct current signal output by the power conversion module;

[0012] A second input end of the single-chip microcomputer is connected to one end of the first resistor, and the other end of the first resistor is connected to the dimming signal source.

[0013] An output end of the single-chip microcomputer is connected to one end of the second resistor, and the other end of the second resistor is connected to the lamp load.

[0014] According to one embodiment of the present application, the logic processing unit further comprises a first capacitor, one end of which is connected to a connection between the power conversion module and the single-chip microcomputer, and the other end of which is grounded.

[0015] According to one embodiment of the present application, the power conversion module comprises a step-down converter, a filter unit, a frequency modulation unit, a freewheeling unit, an energy storage unit and a voltage division unit.

[0016] A first end of the step-down converter is connected to a first end of the direct current signal source, and a second end of the direct current signal source is grounded.

[0017] One end of the filter unit is connected to a connection between the direct current signal source and the step-down converter, and the other end is grounded.

[0018] One end of the frequency modulation unit is connected to a second end of the step-down converter, and the other end is grounded; a third end of the step-down converter is connected to one end of the freewheeling unit and one end of the energy storage unit, the other end of the freewheeling unit is grounded, and the other end of the energy storage unit is connected to a first input end of the signal processing module.

[0019] A connection between the energy storage unit and the signal processing module is connected to a first end of the voltage division unit, a second end of the voltage division unit is grounded, and a third end of the voltage division unit is connected to a fourth end of the step-down converter.

[0020] According to one embodiment of the present application, the filter unit comprises a first electrolytic capacitor, a second electrolytic capacitor and a second capacitor.

[0021] The positive pole of the first electrolytic capacitor and one end of the second capacitor are connected to the connection between the direct current signal source and the voltage reduction converter, and the negative pole of the first electrolytic capacitor and the other end of the second capacitor are grounded.

[0022] The positive pole of the second electrolytic capacitor is connected to the connection between the energy storage unit and the voltage division unit, and the negative pole is grounded.

[0023] According to an embodiment of the present application, the frequency modulation unit comprises a third resistor; one end of the third resistor is connected to the second end of the voltage reduction converter, and the other end is grounded.

[0024] According to an embodiment of the present application, the freewheeling unit comprises a diode; the positive pole of the diode is grounded, and the negative pole of the diode is connected to the connection between the voltage reduction converter and the energy storage unit.

[0025] According to an embodiment of the present application, the energy storage unit comprises an inductor; one end of the inductor is connected to the third end of the voltage reduction converter, and the other end of the inductor is connected to the first input end of the signal processing module.

[0026] According to an embodiment of the present application, the voltage division unit comprises a fourth resistor, a fifth resistor and a sixth resistor;

[0027] One end of the fourth resistor is connected to the connection between the energy storage unit and the signal processing module, and the other end of the fourth resistor is connected to one end of the fifth resistor and one end of the sixth resistor, and the other end of the fifth resistor and the other end of the sixth resistor are grounded.

[0028] The other end of the fourth resistor is also connected to the fourth end of the voltage reduction converter.

[0029] The present application also provides an electronic device loaded with the above-mentioned uniform control circuit for turning on and off the lamps.

[0030] The present application has the beneficial effect that the signal processing module detects the PWM duty cycle of the dimming signal after being powered by the power conversion module, and when the detected PWM duty cycle is lower than the preset threshold, the signal processing module controls all the lamps to be turned off at the same time, so as to ensure that all the lamps can maintain a consistent off state during the light adjustment process, thereby avoiding uneven light caused by different synchronization of turning on and off of the lamps, and further improving the production efficiency of the crops and ensuring the quality of the crops. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is the module connection diagram of the uniform control circuit for turning on and off the lamps provided by the embodiment of the present application;

[0032] Figure 2 is a circuit schematic of a signal processing module of a unified control circuit for turning on and off a lamp provided by an embodiment of the present application;

[0033] Figure 3 is a circuit schematic of a power conversion module of a unified control circuit for turning on and off a lamp provided by an embodiment of the present application. DETAILED DESCRIPTION

[0034] The present application will be further described below in conjunction with the drawings and embodiments.

[0035] The concept, specific structure and generated technical effects of the present application will be clearly and completely described below in conjunction with embodiments and drawings, so as to fully understand the purpose, features and effects of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. In addition, all the coupling / connection relations involved in the patent do not mean that the components are directly connected, but that a better coupling structure can be composed by adding or reducing coupling accessories according to the specific implementation. The technical features in the creation of the present application can be interactively combined without mutual contradiction and conflict.

[0036] Reference Figure 1 , Figure 1 is a module connection diagram of a unified control circuit for turning on and off a lamp provided by an embodiment of the present application, comprising: a power conversion module and a signal processing module; the signal processing module comprises a data sampling unit, a logic processing unit and a signal output unit, and each module will be described in detail as follows:

[0037] The input end of the power conversion module is connected with an external direct current signal source, and the output end is connected with the first input end of the signal processing module.

[0038] Regarding the power conversion module: it is used to convert the first direct current signal output by the direct current signal source into a second direct current signal suitable for the signal processing module, and then input the second direct current signal into the signal processing module. In the present embodiment, the first direct current signal is a 12V direct current signal output by an external direct current signal source, and the power conversion module comprises a DC-DC step-down converter for converting the 12V direct current signal into a 5V direct current signal (i.e. the second direct current signal) and then outputting it to the signal processing module for power supply.

[0039] Further, the second input end of the signal processing module is connected with an external dimming signal source through the input end of the data sampling unit, and the output end of the data sampling unit is connected with the input end of the logic processing unit.

[0040] About the data sampling unit: the data sampling unit is used for receiving the dimming signal sent by the external dimming signal source, and sending the duty cycle of the corresponding PWM signal to the logic processing unit described below for analysis.

[0041] Further, the output end of the logic processing unit is connected to the input end of the signal output unit, and the output end of the signal output unit is connected to the external lamp load.

[0042] About the logic processing unit: for outputting the off signal when the duty cycle of the dimming signal is less than the preset duty cycle, and outputting the off signal to each lamp load through the signal output unit. Thus, in the case where it is impossible to ensure that all lamps are uniformly turned on, all lamps are directly turned off, thereby avoiding uneven lighting and extinguishing of the lamps.

[0043] Further, referring to Figure 2 , Figure 2 is the circuit principle diagram of the signal processing module of the uniform control circuit of the lamp provided by the embodiment of the application, and it can be seen that the logic processing unit comprises a single-chip microcomputer U2, a first resistor R6 and a second resistor R7, wherein:

[0044] The first input end of the single-chip microcomputer is connected to the output end of the power conversion module, for receiving the 5V direct current signal output by the power conversion module;

[0045] The second input end of the single-chip microcomputer U2 is connected to one end of the first resistor R6, and the other end of the first resistor R6 is connected to the dimming signal source DIM-IN;

[0046] The output end of the single-chip microcomputer U2 is connected to one end of the second resistor R7, and the other end of the second resistor R7 is connected to the lamp load.

[0047] Specifically, the model of the single-chip microcomputer used in the embodiment of the application is STC8G1K08A, the first resistor R6 and the second resistor R7 are current limiting resistors, for limiting current to protect the device and improve the reliability of the circuit. The 4-pin of the single-chip microcomputer U2 is connected to the output end 5V+ of the power conversion module, for maintaining power supply.

[0048] More specifically, the logic processing unit further comprises a first capacitor C10;

[0049] One end of the first capacitor C10 is connected to the connection between the power conversion module and the single-chip microcomputer, and the other end of the first capacitor C10 is grounded.

[0050] Specifically, the first capacitor C10 is grounded for filtering, reducing signal interference and improving the reliability of the circuit.

[0051] Further, referring to Figure 3, Figure 3 is the circuit schematic of the power conversion module of the uniform control circuit of the lamp on-off provided by the embodiment of the application, it can be seen that the power conversion module comprises a step-down converter U1, a filter unit, a frequency modulation unit, a freewheeling unit, an energy storage unit and a voltage division unit, in the embodiment of the application, the model of the step-down converter U1 is SL3061, specifically:

[0052] The first end of the step-down converter is connected to the first end of the direct current signal source, and the second end of the direct current signal source is grounded.

[0053] Specifically, the first end (2 pin) of the direct current signal source Vin outputs a 12V direct current signal as an input end, and the first end (1 pin) is grounded to form a loop.

[0054] One end of the filter unit is connected to the connection between the direct current signal source and the step-down converter, and the other end is grounded.

[0055] Specifically, the filter unit comprises a first electrolytic capacitor, a second electrolytic capacitor and a second capacitor;

[0056] The positive pole of the first electrolytic capacitor E1 and one end of the second capacitor C1 are connected to the connection between the direct current signal source Vin and the step-down converter U1, and the negative pole of the first electrolytic capacitor E1 and the other end of the second capacitor C1 are grounded.

[0057] The positive pole of the second electrolytic capacitor E2 is connected to the connection between the energy storage unit and the voltage division unit, and the negative pole is grounded.

[0058] Specifically, the direct current signal input from the direct current signal source Vin to the step-down converter U1 is filtered through the first electrolytic capacitor E1 and the second capacitor C2, and then output to the above-mentioned single-chip microcomputer after being converted and filtered through the second electrolytic capacitor E2.

[0059] Further, one end of the frequency modulation unit is connected to the second end of the step-down converter, and the other end is grounded.

[0060] Specifically, the frequency modulation unit comprises a third resistor R2;

[0061] One end of the third resistor R2 is connected to the second end (3 pin) of the step-down converter U1, and the other end is grounded.

[0062] Further, the third end of the step-down converter is connected to one end of the freewheeling unit and one end of the energy storage unit, the other end of the freewheeling unit is grounded, and the other end of the energy storage unit is connected to the first input end of the signal processing module.

[0063] Specifically, the freewheeling unit comprises a diode D1; a positive electrode of the diode D1 is grounded, and a negative electrode of the diode D1 is connected to a connection between the step-down converter U1 and the energy storage unit.

[0064] Specifically, the energy storage unit comprises an inductor L2; one end of the inductor L2 is connected to a third end (7 / 8 pin) of the step-down converter U1, and the other end of the inductor L2 is connected to a first input end of the signal processing module.

[0065] Further, a connection between the energy storage unit and the signal processing module is connected to a first end of the voltage dividing unit, a second end of the voltage dividing unit is grounded, and a third end of the voltage dividing unit is connected to a fourth end of the step-down converter.

[0066] Specifically, the voltage dividing unit comprises a fourth resistor R3, a fifth resistor R4 and a sixth resistor R5;

[0067] One end of the fourth resistor R3 is connected to the connection between the energy storage unit and the signal processing module, the other end of the fourth resistor R3 is connected to one end of the fifth resistor R4 and one end of the sixth resistor R5, the other end of the fifth resistor R4 and the other end of the sixth resistor R5 are grounded;

[0068] The other end of the fourth resistor R3 is also connected to the fourth end (4 pin) of the step-down converter.

[0069] In the second aspect, the application provides an electronic device loaded with the above-mentioned uniform control circuit for turning on and off the lamp.

[0070] The above is a specific description of the preferred embodiments of the application, but the application is not limited to the embodiments described above. Those skilled in the art can make various equivalent modifications or replacements without departing from the spirit of the application. These equivalent modifications or replacements are all included in the scope defined by the claims of the application.

Claims

1. A unified control circuit for turning on and off lamps, characterized in that: The circuit includes: a power conversion module and a signal processing module; the signal processing module includes a data sampling unit, a logic processing unit and a signal output unit; The input end of the power conversion module is connected to an external DC signal source, and the output end is connected to the first input end of the signal processing module, and is used to convert the first DC signal output by the DC signal source into a second DC signal suitable for the signal processing module, and then input the second DC signal into the signal processing module; The second input end of the signal processing module is connected to an external dimming signal source through the input end of the data sampling unit, and the output end of the data sampling unit is connected to the input end of the logic processing unit, so as to sample the dimming signal sent by the dimming signal source and send the sampled dimming signal to the logic processing unit; The output end of the logic processing unit is connected to the input end of the signal output unit, and the output end of the signal output unit is connected to an external lamp load, so as to output a light-off signal if the duty cycle of the dimming signal is less than a preset duty cycle, and output the light-off signal to each lamp load through the signal output unit.

2. The unified control circuit for turning on and off lamps according to claim 1, characterized in that: The logic processing unit includes a single chip microcomputer, a first resistor and a second resistor; The first input terminal of the single chip microcomputer is connected to the output terminal of the power conversion module, and is used to receive the 5V DC signal output by the power conversion module; The second input terminal of the single chip microcomputer is connected to one end of the first resistor, and the other end of the first resistor is connected to the dimming signal source; The output end of the single chip microcomputer is connected to one end of the second resistor, and the other end of the second resistor is connected to the lamp load.

3. The unified control circuit for turning on and off lamps according to claim 2, characterized in that: The logic processing unit further includes a first capacitor; One end of the first capacitor is connected to the connection point between the power conversion module and the single chip microcomputer, and the other end of the first capacitor is grounded.

4. The unified control circuit for turning on and off lamps according to claim 1, characterized in that: The power conversion module includes a step-down converter, a filtering unit, a frequency modulation unit, a freewheeling unit, an energy storage unit and a voltage divider unit; The first end of the buck converter is connected to the first end of the DC signal source, and the second end of the DC signal source is grounded; One end of the filter unit is connected to the connection point between the DC signal source and the buck converter, and the other end is grounded; One end of the frequency modulation unit is connected to the second end of the buck converter, and the other end is grounded; The third end of the buck converter is connected to one end of the freewheeling unit and one end of the energy storage unit, the other end of the freewheeling unit is grounded, and the other end of the energy storage unit is connected to the first input end of the signal processing module; The connection between the energy storage unit and the signal processing module is connected to the first end of the voltage divider unit, the second end of the voltage divider unit is grounded, and the third end of the voltage divider unit is connected to the fourth end of the buck converter.

5. The unified control circuit for turning on and off lamps according to claim 4, characterized in that: The filtering unit includes a first electrolytic capacitor, a second electrolytic capacitor and a second capacitor; The positive electrode of the first electrolytic capacitor and one end of the second capacitor are connected to the connection point between the DC signal source and the buck converter, and the negative electrode of the first electrolytic capacitor and the other end of the second capacitor are grounded; The positive electrode of the second electrolytic capacitor is connected to the connection point between the energy storage unit and the voltage dividing unit, and the negative electrode is grounded.

6. The unified control circuit for turning on and off lamps according to claim 4, characterized in that: The frequency modulation unit includes a third resistor; One end of the third resistor is connected to the second end of the buck converter, and the other end is grounded.

7. The unified control circuit for turning on and off lamps according to claim 4, characterized in that: The freewheeling unit includes a diode; The anode of the diode is grounded, and the cathode of the diode is connected to the connection point between the buck converter and the energy storage unit.

8. The unified control circuit for turning on and off lamps according to claim 4, characterized in that: The energy storage unit includes an inductor; One end of the inductor is connected to the third end of the buck converter, and the other end of the inductor is connected to the first input end of the signal processing module.

9. The unified control circuit for turning on and off lamps according to claim 4, characterized in that: The voltage dividing unit includes a fourth resistor, a fifth resistor and a sixth resistor; One end of the fourth resistor is connected to the connection point between the energy storage unit and the signal processing module, and the other end is connected to one end of the fifth resistor and one end of the sixth resistor, and the other end of the fifth resistor and the other end of the sixth resistor are grounded; The other end of the fourth resistor is also connected to the fourth end of the buck converter.

10. An electronic device, characterized in that: The utility model is equipped with a unified control circuit for turning on and off the lamps as claimed in any one of claims 1 to 9.

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