CN215263710U - Digital MOSFET dimming electric energy metering control circuit and device - Google Patents

Abstract

The utility model discloses a digital MOSFET adjusts luminance electric energy metering control circuit and device, include: the device comprises a control module, a power supply detection module, a MOSFET driving module, a MOSFET output module, an electric energy data acquisition module, a CAN communication module and an interaction module; the power supply module, the power supply detection module, the MOSFET driving module, the MOSFET output module, the electric energy data acquisition module, the CAN communication module and the interaction module are respectively and electrically connected with the control module; the power supply detection module is respectively electrically connected with the power supply module and the MOSFET driving module; the electric energy data acquisition module, the CAN communication module, the interaction module and the MOSFET output module are respectively and electrically connected with the power supply module; the MOSFET driving module is electrically connected with the MOSFET output module. The utility model discloses an electric energy is gathered and protection circuit sharing, has reduced circuit complexity, realizes accurate current-voltage signal collection, under-voltage, excessive pressure and overflows self recovery protect function.

Description

Digital MOSFET dimming electric energy metering control circuit and device

Technical Field

The utility model relates to an ultraviolet ray disinfection technical field especially relates to a digital MOSFET adjusts luminance electric energy metering control circuit and device.

Background

The MOSFET has the advantages of small leakage current, zero-crossing triggering, small starting overcurrent and simple wiring as a back-edge alternating-current dimming mode. On the other hand, when the MOSFET is used as a trailing edge ac dimming phase-cut, spike interference is easily generated, and a general overcurrent detection circuit is easily misjudged. Therefore, the invention of a digital MOSFET dimming electric energy metering control circuit with high reliability is a problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's above-mentioned defect, provide a digital MOSFET electric energy metering control circuit and device of adjusting luminance.

In a first aspect, the utility model discloses a digital MOSFET dimming electric energy metering control circuit, which comprises a control module, a power detection module, a MOSFET driving module, a MOSFET output module, an electric energy data acquisition module, a CAN communication module and an interaction module; the power supply module, the power supply detection module, the MOSFET driving module, the MOSFET output module, the electric energy data acquisition module, the CAN communication module and the interaction module are respectively and electrically connected with the control module; the power supply detection module is electrically connected with the power supply module and the MOSFET driving module respectively; the electric energy data acquisition module, the CAN communication module, the interaction module and the MOSFET output module are respectively and electrically connected with the power supply module; the MOSFET output module is electrically connected with the MOSFET driving module and the electric energy data acquisition module respectively.

Preferably, the MOSFET driving module includes an optical coupling isolation unit and a driving unit; the optical coupling isolation unit is electrically connected with the control module, and the driving unit is electrically connected with the optical coupling isolation unit.

Preferably, the MOSFET output module includes a first output unit and a second output unit; the first output unit is electrically connected with the MOSFET driving module and the electric energy data acquisition module respectively, the second output unit is electrically connected with the MOSFET driving module and the electric energy data acquisition module respectively, and the first output unit is electrically connected with the second output unit.

Preferably, the electric energy data acquisition module comprises a first electric energy data acquisition unit and a second electric energy data acquisition unit; the first electric energy data acquisition unit is respectively and electrically connected with the MOSFET output module and the second electric energy data acquisition unit, and the second electric energy data acquisition unit is respectively and electrically connected with the MOSFET output module and the control module.

Preferably, the first electric energy data acquisition unit comprises an electric energy metering chip, a fuse, a first coil, a second coil, a third coil, a first optical coupler isolator and a crystal oscillator; the fuse is electrically connected with the first coil, the second coil and the third coil respectively, and the second coil and the third coil are electrically connected with the first end and the second end of the electric energy metering chip respectively; the crystal oscillator is electrically connected with the third end and the fourth end of the electric energy metering chip respectively; the first end of the first optical coupler isolator is electrically connected with the electric energy metering chip, the second end of the first optical coupler isolator is electrically connected with the control module, and the third end and the fourth end of the first optical coupler isolator are grounded.

Preferably, the optical coupling isolation unit includes a second optical coupling isolator, a first triode, a first resistor and a second resistor; the first end of second optical coupling isolator with the control module electricity is connected, the second end of second optical coupling isolator with the first end electricity of first resistance is connected, the second end of first resistance respectively with the base of first triode reaches the first end electricity of second resistance is connected, the collecting electrode of first triode with the drive unit electricity is connected, the projecting pole of first triode with the power module electricity is connected, the third end and the fourth end ground connection of second optical coupling isolator.

Preferably, the driving unit includes a driver, a first diode, and a third resistor; the first end of the third resistor is electrically connected with the collector of the first triode, and the second end of the third resistor is electrically connected with the first end of the driver; the first end of the first diode is electrically connected with the second end of the driver, the second end of the first diode is electrically connected with the third end of the driver, and the fourth end of the driver is electrically connected with the MOSFET output module.

Preferably, the first output unit includes a first MOS transistor, a second diode, a third diode, a fourth resistor, a fifth resistor, and a first capacitor; a first end of the second diode and a first end of the fourth resistor are electrically connected, and a second end of the second diode is electrically connected with a second end of the fourth resistor, a first end of the fifth resistor, a first end of the first capacitor, a first end of the third diode and a gate of the first MOS transistor respectively; a second end of the first capacitor and a second end of the fifth resistor are grounded; the drain electrode of the first MOS tube is used as an output end, and the source electrode of the first MOS tube is electrically connected with the second end of the third diode and the second output unit respectively.

A second aspect. The utility model discloses a digital MOSFET adjusts luminance electric energy metering control device, including the first aspect a digital MOSFET adjust luminance electric energy metering control circuit.

The utility model discloses a digital MOSFET adjusts luminance electric energy metering control circuit and device has following beneficial effect, the utility model discloses a digital MOSFET adjusts luminance electric energy metering control circuit includes: the device comprises a control module, a power supply detection module, a MOSFET driving module, a MOSFET output module, an electric energy data acquisition module, a CAN communication module and an interaction module; the power supply module, the power supply detection module, the MOSFET driving module, the MOSFET output module, the electric energy data acquisition module, the CAN communication module and the interaction module are respectively and electrically connected with the control module; the power supply detection module is electrically connected with the power supply module and the MOSFET driving module respectively; the electric energy data acquisition module, the CAN communication module, the interaction module and the MOSFET output module are respectively and electrically connected with the power supply module; the MOSFET output module is electrically connected with the MOSFET driving module and the electric energy data acquisition module respectively. The power supply module is used for supplying power to the system; the CAN communication module is used for communicating with a host connected with the CAN bus to realize the parameter configuration of the MOSFET driving module; the interaction module is used for indicating and performing man-machine interaction through a key and an indicator light equal system; the power supply detection module is used for measuring parameters such as input voltage and current of the power supply module; the electric energy data acquisition module is used for acquiring parameters such as voltage, current and power output by the MOSFET output module and transmitting the parameters to the control module, and the control module filters interference generated in the MOSFET output module through an internal preset digital filtering algorithm, so that the system can accurately calculate related parameters such as circuit voltage, current, electric power and electric energy, accurately realize overvoltage, undervoltage, overcurrent and overload protection of the system, and play roles in related equipment protection, performance judgment and energy conservation and providing decision data support. Therefore, the utility model discloses an electric energy is gathered and protection circuit sharing, has reduced circuit complexity, realizes accurate current-voltage signal collection, under-voltage, excessive pressure and overflows self recovery protect function to calculate electric power and electric energy, judge and energy-conservingly to equipment protection, performance and provide decision-making data support.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein 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 without inventive efforts according to the drawings:

fig. 1 is a schematic circuit block diagram of a digital MOSFET dimming electric energy metering control circuit according to a preferred embodiment of the present invention;

fig. 2 is a schematic block diagram of a digital MOSFET dimming electric energy metering control circuit according to another preferred embodiment of the present invention;

fig. 3 is a circuit diagram of an electric energy data acquisition module of a digital MOSFET dimming electric energy metering control circuit according to a preferred embodiment of the present invention;

fig. 4 is a circuit diagram of a MOSFET driving module of a digital MOSFET dimming electric energy metering control circuit according to a preferred embodiment of the present invention;

fig. 5 is a circuit diagram of a MOSFET output module of a digital MOSFET dimming electric energy metering control circuit according to a preferred embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, belong to the scope of protection of the present invention.

Fig. 1 shows a preferred embodiment of the present invention, which includes a control module 1, a power module 2, a power detection module 3, a MOSFET driving module 4, a MOSFET output module 5, an electric energy data acquisition module 6, a CAN communication module 7, and an interaction module 8; the power module 2, the power detection module 3, the MOSFET driving module 4, the MOSFET output module 5, the electric energy data acquisition module 6, the CAN communication module 7 and the interaction module 8 are respectively electrically connected with the control module 1; the power supply detection module 3 is electrically connected with the power supply module 2 and the MOSFET driving module 4 respectively; the electric energy data acquisition module 6, the CAN communication module 7, the interaction module 8 and the MOSFET output module 5 are respectively electrically connected with the power module 2; the MOSFET output module 5 is electrically connected with the MOSFET driving module 4 and the electric energy data acquisition module 6 respectively. The power supply module 2 is used for supplying power to the system; the CAN communication module 7 is used for communicating with a host connected with the CAN bus to realize the parameter configuration of the MOSFET driving module; the interaction module 8 is used for indicating and performing man-machine interaction through a key and an indicator light equal to a system; the power supply detection module 3 is used for measuring parameters such as input voltage and current of the power supply module 2; the electric energy data acquisition module 6 is used for acquiring parameters such as voltage, current and power output by the MOSFET output module and transmitting the parameters to the control module, and the control module 1 filters interference generated in the MOSFET output module 5 through an internal preset digital filtering algorithm, so that the system can accurately calculate related parameters such as circuit voltage, current, electric power and electric energy, accurately realize overvoltage, undervoltage, overcurrent and overload protection of the system, and play roles of related equipment protection, performance judgment and energy saving and providing decision data support. Therefore, the utility model discloses an electric energy is gathered and protection circuit sharing, has reduced circuit complexity, realizes accurate current-voltage signal collection, under-voltage, excessive pressure and overflows self recovery protect function to calculate electric power and electric energy, judge and energy-conservingly to equipment protection, performance and provide decision-making data support.

Preferably, the control module 1 comprises a controller and a related peripheral circuit, and the controller is a single chip controller. In another preferred embodiment, the controller may be configured as an FPGA or a PLC, and the type and structure of the controller are not particularly limited herein.

Preferably, referring to fig. 2, the MOSFET driving module 4 includes an optical coupling isolation unit 41 and a driving unit 42; the optical coupling isolation unit 41 is electrically connected with the control module 1, and the driving unit 42 is electrically connected with the optical coupling isolation unit 41. It can be understood that, in the present embodiment, the optical coupling and isolating unit 41 is used to enhance the signal isolation between the control module 1 and the driving unit 42, so as to improve the interference immunity of the driving unit 42.

Preferably, referring to fig. 2, the MOSFET output module 5 includes a first output unit 51 and a second output unit 52; the first output unit 51 is electrically connected with the MOSFET driving module 4 and the electric energy data acquisition module 6, the second output unit 52 is electrically connected with the MOSFET driving module 4 and the electric energy data acquisition module 6, and the first output unit 51 is electrically connected with the second output unit 52. It can be understood that, in this embodiment, the power detection module 3 collects the sinusoidal voltage waveform of the power module 2 and forms a square wave voltage waveform with the same period as the sinusoidal voltage waveform; the control module 1 receives the square wave voltage waveform, performs real-time filtering, and controls the MOSFET driving module 4 to output a dynamically variable PWM signal according to a configuration value of the CAN communication module 7 and a setting value of the interaction module 7; the first output unit 51 and the second output unit 52 receive the PWM signal, and control on/off of the first output unit 51 and the second output unit 52; the first output unit 51 and the second output unit 52 respectively correspond to the upper half cycle and the lower half cycle of the square wave voltage waveform, and are used for realizing zero point triggering and conduction angle triggering.

Preferably, referring to fig. 2, the electric energy data acquisition module 6 includes a first electric energy data acquisition unit 61 and a second electric energy data acquisition unit 62; the first electric energy data acquisition unit 61 is electrically connected with the second electric energy data acquisition unit 62 and the control module 1, respectively, and the second electric energy data acquisition unit 62 is electrically connected with the MOSFET output module 5 and the control module 1, respectively. It can be understood that, in this embodiment, the first electric energy data collecting unit 61 is configured to collect the operating current of the MOSFET output module 5 in real time, and calculate a corresponding effective voltage value through a corresponding electric energy metering chip; the second electric energy data acquisition unit 62 is configured to sample the working voltage of the MOSFET output module 5, and calculate the real-time ac working voltage through the electric energy metering chip in the first electric energy data acquisition unit 61. In addition, the electric energy metering chip can also be used for data of electric energy data such as an effective power instantaneous value, an average value, a waveform phase angle and the like.

Preferably, referring to fig. 3, the first power data collecting unit 61 includes a power metering chip U28, a fuse F6, a first coil L3, a second coil L4, a third coil L5, a first optical isolator ISO1, and a crystal oscillator Y2; the fuse F6 is electrically connected with the first coil L3, the second coil L4 and the third coil L5 respectively, and the second coil L4 and the third coil L5 are electrically connected with the first end and the second end of the electric energy metering chip U28 respectively; the crystal oscillator Y2 is electrically connected with the third end and the fourth end of the electric energy metering chip U28 respectively; the first end of the first optical coupler isolator ISO1 is electrically connected with the electric energy metering chip U28, the second end of the first optical coupler isolator ISO1 is electrically connected with the control module 1, and the third end and the fourth end of the first optical coupler isolator ISO1 are grounded. It is understood that the first coil L3 and the second coil L4 detect the primary current of the relay module 4 according to the mutual inductance effect, and the output of the power metering chip U1 is proportional to the derivative of the coil current with respect to time. The crystal oscillator Y2 is used for counting clocks, and the photoelectric coupler ISO1 is used for isolating the photoelectric effect between the electric energy data acquisition module 6 and the control module, so that the anti-interference capability of the system is improved. In this embodiment, referring to fig. 3, the second electric energy data collecting unit 62 divides voltage through a plurality of weight resistors to sample the working voltage of the MOSFET output module 5, and the electric energy metering chip U1 collects real-time current and voltage waveforms and outputs electric energy data such as an effective current and voltage value, an effective power instantaneous value, an effective power average value, and a waveform phase angle through a standard SPI interface.

Preferably, referring to fig. 4, the optical coupling isolation unit 41 includes a second optical coupling isolator U10, a first transistor Q15, a first resistor R123 and a second resistor R54; the first end of second opto-isolator U10 with control module 1 electricity is connected, the second end of second opto-isolator U10 with the first end electricity of first resistance R123 is connected, the second end of first resistance R123 respectively with the base of first tripolar Q15 pipe and the first end electricity of second resistance R54 is connected, first triode Q15's collecting electrode with the drive unit 42 electricity is connected, first triode Q15's projecting pole with power module 2 electricity is connected, the U10 third end and the fourth end ground connection of second opto-isolator. In this embodiment, the second optical coupler isolator U10 realizes a signal isolation function, and enhances the interference immunity of the driving unit.

Preferably, referring to fig. 4, the driving unit 42 includes a driver U8, a first diode D15, and a third resistor R119; a first terminal of the third resistor R119 is electrically connected to a collector of the first transistor Q15, and a second terminal of the third resistor R119 is electrically connected to a first terminal of the driver U8; a first terminal of the first diode D15 is electrically connected with a second terminal of the driver U8, a second terminal of the first diode D15 is electrically connected with a third terminal of the driver U8, and a fourth terminal of the driver U8 is electrically connected with the MOSFET output module 5. In the present embodiment, the driver U8 is specifically of the type IR 2127. In another preferred embodiment, the type of the driver U8 is not particularly limited.

Preferably, referring to fig. 5, the first output unit 51 includes a first MOS transistor Q6, a second diode D24, a third diode D31, a fourth resistor R38, a fifth resistor R44, and a first capacitor C60; a first end of the second diode D24 and a first end of the fourth resistor R38 are electrically connected, and a second end of the second diode D24 is electrically connected to a second end of the fourth resistor R38, a first end of the fifth resistor R44, a first end of the first capacitor C60, a first end of the third diode D31 and a gate of the first MOS transistor Q6, respectively; a second terminal of the first capacitor C60 and a second terminal of the fifth resistor R44 are grounded; the drain of the first MOS transistor Q6 is used as the output terminal, and the source of the first MOS transistor Q6 is electrically connected to the second terminal of the third diode D31 and the second output unit 52, respectively. It is understood that the CS pin of the driver U8 is connected to the first output unit 51 and the second output unit 52 through the first terminal of the second diode D24 and the first terminal of the fourth resistor R38. When the first MOS transistor Q6 and the MOS transistor Q8 are turned on to work, the MOSFET output module outputs a voltage, the voltage output is controlled by adjusting the duty ratio of the output waveform of the H0 pin of the driver U8, and the LED lamp to be adjusted is adjusted through the drain of the MOS transistor Q8.

Preferably, in this embodiment, the structure of the second output unit 52 is symmetrical to the structure of the first output unit 51, and the structure of the second output unit 52 specifically refers to fig. 5, which is not described herein again.

Example two

The utility model also discloses a digital MOSFET adjusts luminance electric energy metering control device, including the first aspect enough realize protection and electric energy collection device sharing and accurate current-voltage signal acquisition and reduce a digital MOSFET of circuit complexity and adjust luminance electric energy metering control circuit.

To sum up, in the digital MOSFET dimming electric energy metering control circuit and the digital MOSFET dimming electric energy metering control device provided by the present invention, the power module 2 is used for system power supply; the CAN communication module 7 is used for communicating with a host connected with the CAN bus to realize the parameter configuration of the MOSFET driving module; the interaction module 8 is used for indicating and performing man-machine interaction through a key and an indicator light equal to a system; the power supply detection module 3 is used for measuring parameters such as input voltage and current of the power supply module 2; the electric energy data acquisition module 6 is used for acquiring parameters such as voltage, current and power output by the MOSFET output module and transmitting the parameters to the control module 1, and the control module 1 filters interference generated in the MOSFET output module 5 through an internal preset digital filtering algorithm, so that the system can accurately calculate related parameters such as circuit voltage, current, electric power and electric energy, accurately realize overvoltage, undervoltage, overcurrent and overload protection of the system, and play roles of related equipment protection, performance judgment and energy conservation and providing decision data support. Therefore, the utility model discloses an electric energy is gathered and protection circuit sharing, has reduced circuit complexity, realizes accurate current-voltage signal collection, under-voltage, excessive pressure and overflows self recovery protect function to calculate electric power and electric energy, judge and energy-conservingly to equipment protection, performance and provide decision-making data support.

The digital MOSFET dimming electric energy metering control circuit and the digital MOSFET dimming electric energy metering control device provided by the present invention are introduced in detail, and specific examples are applied herein to explain the principles and the implementation of the present invention, and the description of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, to the general technical personnel in this field, according to the utility model discloses an idea, all can have the change part on concrete implementation and application scope, to sum up, this description content only is the utility model discloses an embodiment, does not consequently restrict the utility model discloses a patent scope, all utilize the equivalent structure or the equivalent flow transform that the content of the description and the attached drawing did, or directly or indirectly use in other relevant technical fields, all the same reason is included in the utility model discloses a patent protection scope. And should not be construed as limiting the invention.

Claims (7)

1. A digital MOSFET dimming electric energy metering control circuit is characterized by comprising: the device comprises a control module, a power supply detection module, a MOSFET driving module, a MOSFET output module, an electric energy data acquisition module, a CAN communication module and an interaction module; the power supply module, the power supply detection module, the MOSFET driving module, the MOSFET output module, the electric energy data acquisition module, the CAN communication module and the interaction module are respectively and electrically connected with the control module; the power supply detection module is electrically connected with the power supply module and the MOSFET driving module respectively; the electric energy data acquisition module, the CAN communication module, the interaction module and the MOSFET output module are respectively and electrically connected with the power supply module; the MOSFET output module is electrically connected with the MOSFET driving module and the electric energy data acquisition module respectively; the MOSFET driving module comprises an optical coupling isolation unit and a driving unit; the optical coupling isolation unit is electrically connected with the control module, and the driving unit is electrically connected with the optical coupling isolation unit; the optical coupling isolation unit comprises a second optical coupling isolator, a first triode, a first resistor and a second resistor; the first end of second optical coupling isolator with the control module electricity is connected, the second end of second optical coupling isolator with the first end electricity of first resistance is connected, the second end of first resistance respectively with the base of first triode reaches the first end electricity of second resistance is connected, the collecting electrode of first triode with the drive unit electricity is connected, the projecting pole of first triode with the power module electricity is connected, the third end and the fourth end ground connection of second optical coupling isolator.

2. The digital MOSFET dimming power metering control circuit of claim 1, wherein the MOSFET output module comprises a first output unit and a second output unit; the first output unit is electrically connected with the MOSFET driving module and the electric energy data acquisition module respectively, the second output unit is electrically connected with the MOSFET driving module and the electric energy data acquisition module respectively, and the first output unit is electrically connected with the second output unit.

3. The digital MOSFET dimming electric energy metering control circuit of claim 1, wherein the electric energy data acquisition module comprises a first electric energy data acquisition unit and a second electric energy data acquisition unit; the first electric energy data acquisition unit is respectively and electrically connected with the MOSFET output module and the second electric energy data acquisition unit, and the second electric energy data acquisition unit is respectively and electrically connected with the MOSFET output module and the control module.

4. The digital MOSFET dimming electric energy metering control circuit of claim 3, wherein the first electric energy data acquisition unit comprises an electric energy metering chip, a fuse, a first coil, a second coil, a third coil, a first optical coupler isolator and a crystal oscillator; the fuse is electrically connected with the first coil, the second coil and the third coil respectively, and the second coil and the third coil are electrically connected with the first end and the second end of the electric energy metering chip respectively; the crystal oscillator is electrically connected with the third end and the fourth end of the electric energy metering chip respectively; the first end of the first optical coupler isolator is electrically connected with the electric energy metering chip, the second end of the first optical coupler isolator is electrically connected with the control module, and the third end and the fourth end of the first optical coupler isolator are grounded.

5. The digital MOSFET dimming power metering control circuit of claim 1, wherein the driving unit comprises a driver, a first diode and a third resistor; the first end of the third resistor is electrically connected with the collector of the first triode, and the second end of the third resistor is electrically connected with the first end of the driver; the first end of the first diode is electrically connected with the second end of the driver, the second end of the first diode is electrically connected with the third end of the driver, and the fourth end of the driver is electrically connected with the MOSFET output module.

6. The digital MOSFET dimming electric energy metering control circuit of claim 2, wherein the first output unit comprises a first MOS transistor, a second diode, a third diode, a fourth resistor, a fifth resistor and a first capacitor; a first end of the second diode and a first end of the fourth resistor are electrically connected, and a second end of the second diode is electrically connected with a second end of the fourth resistor, a first end of the fifth resistor, a first end of the first capacitor, a first end of the third diode and a gate of the first MOS transistor respectively; a second end of the first capacitor and a second end of the fifth resistor are grounded; the drain electrode of the first MOS tube is used as an output end, and the source electrode of the first MOS tube is electrically connected with the second end of the third diode and the second output unit respectively.

7. A digital MOSFET dimming power metering control device, comprising a digital MOSFET dimming power metering control circuit according to any one of claims 1 to 6.

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