CN117200462A - Instruction detection circuit, grid-connected device and electronic equipment - Google Patents
Instruction detection circuit, grid-connected device and electronic equipment Download PDFInfo
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- CN117200462A CN117200462A CN202311469262.8A CN202311469262A CN117200462A CN 117200462 A CN117200462 A CN 117200462A CN 202311469262 A CN202311469262 A CN 202311469262A CN 117200462 A CN117200462 A CN 117200462A
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- 238000004891 communication Methods 0.000 claims abstract description 69
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- 238000001914 filtration Methods 0.000 claims description 9
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- 238000004146 energy storage Methods 0.000 description 4
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Abstract
The application belongs to the technical field of circuits, and provides an instruction detection circuit, a grid-connected device and electronic equipment. The instruction detection circuit includes: the communication module, the detection selection module and the main control module can select and process the instruction signals through setting the detection selection module to generate corresponding instruction detection signals, so that the instruction signals with different voltages can be screened, the selection is realized on different instruction signals, the main control module at the rear end generates corresponding control signals according to the corresponding instruction detection signals, the corresponding control on the target module is realized, and the detection on the instruction signals can be realized simply, rapidly and accurately.
Description
Technical Field
The application belongs to the technical field of circuits, and particularly relates to an instruction detection circuit, a grid-connected device and electronic equipment.
Background
According to australian photovoltaics and energy storage, the requirements for responding to the power grid dispatching instructions, namely DRMs (Inverter demand response modes, inverter requirement response modes) are required to be met at present, the inverter needs to interact with external equipment of the DRED (demand response enabling device, requirement response enabling device) to receive the power grid unified dispatching instructions, and therefore the instructions of the australian energy storage inverter need to be detected.
Disclosure of Invention
The application aims to provide an instruction detection circuit, a grid-connected device and electronic equipment, and aims to solve the problem of instruction detection of an Australian energy storage inverter.
A first aspect of an embodiment of the present application provides an instruction detection circuit, the instruction detection circuit being connected to an instruction receiving board, the instruction detection circuit including:
the communication module is connected with the instruction receiving board and is used for receiving an instruction signal of the instruction receiving board;
the detection selection module is connected with the communication module and is used for receiving the instruction signal, carrying out current limiting and screening treatment on the instruction signal and generating an instruction detection signal;
the main control module is connected with the detection selection module and used for receiving the instruction detection signal, generating an instruction control signal according to the instruction detection signal and sending the instruction control signal to the target module, wherein the instruction control signal is used for controlling the working state of the target module.
In one embodiment, the detection selection module includes a plurality of detection selection units;
the communication module comprises a plurality of communication input ports and a plurality of communication output ports;
the communication input ports are connected with the instruction receiving board;
the detection selection units are respectively connected with the communication output ports in a one-to-one correspondence manner; each detection selection unit is used for receiving the corresponding command signals output by the corresponding connected communication output ports, and carrying out current limiting and screening processing on the command signals to generate corresponding command detection signals.
In one embodiment, each of the detection selection units includes at least one current limiting circuit and at least one selection circuit;
the at least one current limiting circuit is connected with the communication output port and is used for carrying out current limiting treatment on the instruction signal;
the at least one selection circuit is connected with the at least one current limiting circuit and is used for carrying out selection processing on the instruction signals.
In one embodiment, each of the detection selection units further comprises at least one switching circuit;
the at least one switch circuit is connected with the at least one selection circuit and is used for generating the instruction detection signal according to the instruction signal after the selection processing.
In one embodiment, the at least one selection circuit comprises at least one selection device connected in series between the at least one switching circuit and the at least one current limiting circuit.
In one embodiment, the at least one selection device comprises a regulator tube; the first end of the voltage stabilizing tube is connected with the at least one switch circuit, and the second end of the voltage stabilizing tube is connected with the at least one current limiting circuit.
In one embodiment, the at least one current limiting circuit includes at least one current limiting resistor; the first end of the at least one current limiting resistor is connected with the communication output port, and the second end of the at least one current limiting resistor is connected with the at least one selection circuit.
In one embodiment, the instruction detection circuit further comprises:
the filtering module is arranged between the communication module and the detection selection module and is used for filtering the instruction signal.
A second aspect of an embodiment of the present application provides a grid-connected device, including:
the command receiving plate is connected with the power grid and is used for receiving command signals of the power grid;
and an instruction detection circuit as claimed in any preceding claim; the instruction detection circuit is connected with the instruction receiving board.
A third aspect of an embodiment of the present application provides an electronic device, including an instruction detection circuit as set forth in any one of the preceding claims; or the electronic device comprises a grid-tie device as described above.
Compared with the prior art, the embodiment of the application has the beneficial effects that: the embodiment of the application provides an instruction detection circuit, which can select and process instruction signals by arranging a detection selection module to generate corresponding instruction detection signals, so that the instruction signals with different voltages can be screened, and the selection of different instruction signals is realized, so that a main control module at the rear end generates corresponding control signals according to the corresponding instruction detection signals, and the corresponding control of a target module is realized, so that the detection of the instruction signals can be realized simply, quickly and accurately.
Drawings
FIG. 1 is a schematic diagram of an instruction detection circuit according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a second embodiment of an instruction detection circuit according to the present application;
FIG. 3 is a schematic diagram of an instruction detection circuit according to an embodiment of the present application;
FIG. 4 is a schematic circuit diagram of a first detection selection unit according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a specific circuit of a second detection selection unit according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a third detection selection unit according to an embodiment of the present application;
FIG. 7 is a schematic circuit diagram of a fourth detection selection unit according to an embodiment of the present application;
FIG. 8 is a schematic diagram of a fifth embodiment of a fifth detection selection unit according to the present application;
FIG. 9 is a schematic diagram of an equivalent circuit according to an embodiment of the present application;
FIG. 10 is a schematic diagram of an equivalent circuit according to an embodiment of the present application;
FIG. 11 is a schematic diagram of an equivalent circuit according to an embodiment of the present application;
FIG. 12 is a schematic diagram of an equivalent circuit according to an embodiment of the present application;
fig. 13 is a schematic diagram showing an equivalent circuit according to an embodiment of the present application;
fig. 14 is a schematic diagram showing an equivalent circuit according to an embodiment of the present application;
FIG. 15 is a schematic diagram of an equivalent circuit according to an embodiment of the present application;
FIG. 16 is a schematic diagram of an equivalent circuit eight according to an embodiment of the present application;
fig. 17 is a schematic diagram of an equivalent circuit according to an embodiment of the present application.
Description of the embodiments
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
According to australian photovoltaics and energy storage, the requirements for responding to the power grid dispatching instructions, namely DRMs (Inverter demand response modes ) are required to be met at present, and the inverter needs to interact with external equipment of the DRED (demand response enabling device ) to receive the power grid unified dispatching instructions.
Most of the existing detection methods are realized in a software mode, but the software detection method has the problems of slow detection reaction time and easiness in interference.
In order to solve the above technical problem, referring to fig. 1, an embodiment of the present application provides an instruction detection circuit, which is connected to an instruction receiving board 10, and includes: the device comprises a communication module 20, a detection selection module 30 and a main control module 40.
Specifically, the communication module 20 is connected to the command receiving board 10, and the communication module 20 is configured to receive a command signal from the command receiving board 10. The detection selection module 30 is connected to the communication module 20, and the detection selection module 30 is configured to receive the instruction signal, perform current limiting and screening processing on the instruction signal, and generate an instruction detection signal. The main control module 40 is connected with the detection selection module 30, and the main control module 40 is used for receiving the instruction detection signal, generating an instruction control signal according to the instruction detection signal, and sending the instruction control signal to the target module, wherein the instruction control signal is used for controlling the working state of the target module.
In this embodiment, the instruction receiving board 10 is configured to connect to a power grid, and when the power grid needs to be connected to the power grid, a corresponding power grid signal is sent to the instruction receiving board 10, so that the instruction receiving board 10 performs a corresponding operation.
In this embodiment, the communication module 20 is connected to the instruction receiving board 10 and the detection selecting module 30, respectively, and the communication module 20 is configured to transmit an instruction signal generated after the instruction receiving board 10 performs a corresponding action according to the control signal, i.e. forward the instruction signal of the instruction receiving board 10 to the detection selecting module 30. By providing the communication module 20, the command signal of the command receiving board 10 can be stably transferred to the detection selecting module 30, and the stability of the circuit is increased.
In this embodiment, the detection selection module 30 is configured to receive the instruction signal, perform current limiting and filtering processing on the instruction signal, and generate an instruction detection signal. Specifically, the instruction signals include instruction signals with different voltages, and the detection selection module 30 may perform current limiting processing on the instruction signals with different voltages, so as to improve stability of the circuit. The detection selection module 30 may perform selection processing on command signals with different voltages, for example, after the command signal with a voltage greater than a certain threshold passes through the detection selection module 30, a corresponding command detection signal is generated, and the command signal with a voltage less than a certain threshold does not pass through the detection selection module 30.
In one embodiment, the detection selection module 30 may generate command detection signals of different voltages according to the command signals of different voltages, and then output through different output ports of the detection selection module 30.
In one embodiment, the detection selection module 30 includes a plurality of channels, and command signals of different voltages are generated through the different channels to command detection signals of different voltages, and then output through the different channels.
In this embodiment, the detection selection module 30 is configured to perform selection processing on the command signals to generate corresponding command detection signals, so that the command signals with different voltages can be screened, and selection is performed on different command signals, so that the master control module 40 at the rear end generates corresponding control signals according to the corresponding command detection signals, so as to realize corresponding control on the target module, and thus, detection on the command signals can be simply, quickly and accurately realized.
In this embodiment, the main control module 40 is configured to receive the command detection signal, generate a command control signal according to the command detection signal, and send the command control signal to the target module, where the command control signal is configured to control the working state of the target module. Specifically, the main control module 40 can know what kind of instruction is sent by the power grid by acquiring the instruction detection signal, what kind of operation is made by the instruction receiving board 10, and then the main control module 40 generates an instruction control signal according to the instruction detection signal and sends the instruction control signal to the target module, so that the target module performs corresponding operation. For example, the target module may be an inverter, and the main control module 40 controls the inverter to perform actions such as grid connection according to a grid command of the grid.
In one embodiment, referring to fig. 2, the detection selection module 30 includes a plurality of detection selection units 31; the communication module 20 includes a plurality of communication input ports and a plurality of communication output ports; the plurality of communication input ports are connected with the instruction receiving board 10; the detection selection units 31 are respectively connected with the communication output ports in a one-to-one correspondence manner; each detection selection unit 31 is configured to receive the corresponding command signal output by the corresponding connected communication output port, and perform current limiting and screening processing on the command signal, so as to generate a corresponding command detection signal.
In this embodiment, the plurality of communication input ports are connected with the plurality of communication output ports in a one-to-one correspondence manner, the plurality of communication input ports are connected with different output ports of the instruction receiving board 10 in a one-to-one correspondence manner, the plurality of communication output ports are used for outputting different instruction signals to different detection selection units 31, and each detection selection unit 31 is used for receiving the corresponding instruction signals output by the corresponding connected communication output ports, and performing current limiting and screening processing on the instruction signals to generate corresponding instruction detection signals. In this way, when the command receiving board 10 generates different command signals according to different grid signals, different command detection signals can be output through different detection selection units 31. It will be appreciated that the different detection selection units 31 are arranged to process different instruction signals and to generate different instruction detection signals, thus enabling accurate detection of different instruction signals.
In one embodiment, each detection selection unit 31 includes at least one current limiting circuit and at least one selection circuit; the at least one current limiting circuit is connected with the communication output port and is used for carrying out current limiting treatment on the instruction signals; the at least one selection circuit is connected with the at least one current limiting circuit and is used for carrying out selection processing on the instruction signals.
In this embodiment, at least one current limiting circuit may perform current limiting processing on command signals with different voltages, so as to improve stability of the circuit. The at least one selection circuit may perform selection processing on command signals of different voltages, for example, command signals greater than a certain threshold voltage pass through the at least one selection circuit, and command signals less than a certain threshold voltage do not pass through the at least one selection circuit. So can realize selecting to different instruction signals to make the main control module 40 of rear end produce corresponding control signal according to corresponding instruction detection signal, in order to realize carrying out corresponding control to the target module, so can simply, fast, accurate realization to instruction signal detection.
In one embodiment, each detection selection unit 31 further includes at least one switching circuit; the at least one switching circuit is connected with the at least one selection circuit and is used for generating an instruction detection signal according to the instruction signal after the selection processing.
In this embodiment, for example, a command signal greater than a certain threshold voltage reaches at least one switching circuit through at least one selection circuit, so that the at least one switching circuit is turned on, and a command detection signal is generated. The at least one switch circuit also has an isolation function for isolating the at least one selection circuit and the main control module 40, so that the at least one selection circuit and the main control module 40 are isolated from each other, the mutual influence is avoided, and the stability of the circuit is improved.
In one embodiment, the at least one selection circuit comprises at least one selection device connected in series between the at least one switching circuit and the at least one current limiting circuit.
In this embodiment, at least one of the selection devices has a selection function, for example, a command signal having a voltage greater than a certain value may be passed, and a command signal having a voltage less than or equal to a certain value may be blocked from being passed.
In one embodiment, the at least one selection device has a unidirectional conduction function, so that the mutual influence of the at least one switching circuit and the at least one current limiting circuit can be avoided, and the stability of the circuit is improved.
In one embodiment, the at least one selection device may comprise a plurality of identical selection devices, which are in turn connected in series.
In one embodiment, the at least one selection device comprises a regulator tube; the first end of the voltage stabilizing tube is connected with at least one switch circuit, and the second end of the voltage stabilizing tube is connected with at least one current limiting circuit.
In this embodiment, the voltage regulator tube has a selective function and a unidirectional conduction characteristic, so that the command signal with a voltage greater than a certain value passes through, and the command signal with a voltage less than or equal to a certain value is blocked and does not pass through. The mutual influence of at least one switching circuit and at least one current limiting circuit can be avoided, and the stability of the circuit is improved.
In one embodiment, the at least one current limiting circuit includes at least one current limiting resistor; the first end of the at least one current limiting resistor is connected with the communication output port, and the second end of the at least one current limiting resistor is connected with the at least one selection circuit. In this embodiment, at least one current limiting resistor may perform current limiting processing on command signals with different voltages, so as to improve stability of the circuit.
In one embodiment, the at least one current limiting circuit includes a plurality of current limiting resistors serially connected in series.
In one embodiment, the instruction detection circuit further comprises: and a filtering module.
Specifically, the filtering module is disposed between the communication module 20 and the detection selection module 30, and is configured to perform filtering processing on the command signal. The filtering module can conduct current limiting processing on instruction signals with different voltages, prevent a lower-level circuit from being impacted by large current, and improve stability of the circuit.
In one embodiment, referring to fig. 3, the instruction receiving board 10 includes: switch S1, switch S2, switch S3, switch S4, switch S5, switch S6, switch S7, switch S8, switch S5a, switch S1a, switch S9, switch S0, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, diode D8, diode D3, resistor R6, resistor R7, resistor R8, resistor R54, resistor R55.
Specifically, the first end of the switch S1 is connected to the first end of the switch S5 and is commonly connected to the communication module 20, the first end of the switch S2 is connected to the first end of the switch S6 and is commonly connected to the communication module 20, the first end of the switch S3 is connected to the first end of the switch S7 and is commonly connected to the communication module 20, the first end of the switch S4 is connected to the first end of the switch S8 and is commonly connected to the communication module 20, the second end of the switch S1, the second end of the switch S2, the second end of the switch S3, the second end of the switch S4 are connected in series with the switch S9 and the resistor R54, the second end of the switch S5, the second end of the switch S6, the second end of the switch S7, the second end of the switch S8 is connected in series with the resistor R55 and the voltage source 13, the resistor R7 is connected in parallel with the second end of the switch S8, the first end of the switch S1 is also connected in series with the switch S5a, the resistor R6 is connected in series with the diode, the diode D1D 2, the diode D3D 2 and the diode VDC is connected in series with the diode D1 and the diode D3D 2. The first end of the switch S1 is also connected in series with the switch S1a and the resistor R8, then connected in series with the diode D5, the diode D6 and the resistor R54 in sequence, and then grounded, and the diode D7 and the diode D8 are connected in parallel with the diode D5 and the diode D6.
In this embodiment, referring to fig. 3, the control terminals of the switches S1, S2, S3, S4, S5, S6, S7, S8, S5a, S1a, S9, and S0 are configured to receive the power grid signal of the power grid to conduct or disconnect, and then generate different command signals to output to the communication circuit. Switch S5a, switch S1a is simply the certification authority used to test the output current capability of the inverter REF GEN and COM/DRM0 ports, switch S9, and switch S0 used to send instructions.
In one embodiment, referring to FIG. 3, the filter module includes resistors R1, R2, R3, R4. The first ends of the resistor R1, the resistor R2, the resistor R3 and the resistor R4 are all connected with the communication module 20, and the second ends of the resistor R1, the resistor R2, the resistor R3 and the resistor R4 are all connected with the voltage source VDC1 and then grounded.
In one embodiment, the detection selection module 30 includes 5 detection selection units 31; each detection selection unit 31 includes 2 current limiting circuits, 2 selection circuits, and 2 switching circuits. For example, the 5 detection selection units 31 are respectively: the device comprises a first detection selection unit, a second detection selection unit, a third detection selection unit, a fourth detection selection unit and a fifth detection selection unit.
In one embodiment, as shown in fig. 4, the first detection selecting unit includes: resistor R58, resistor R59, regulator Z1, switching tube Q1, resistor R111, resistor R112, regulator Z7, and switching tube Q7.
Specifically, the first end of the resistor R58 is connected to the communication module 20 through the port DRMS15, the second end of the resistor R58 is connected in series with the voltage stabilizing tube Z1 and then is connected to the control end of the switching tube Q1, the first end of the switching tube Q1 is grounded, the second end of the switching tube Q1 is connected in series with the resistor R59 and the voltage source VCC and then is grounded, the second end of the switching tube Q1 is further connected to the main control module 40 through the port DRMS1_io, the first end of the resistor R111 is connected to the communication module 20 through the port DRMS15, the second end of the resistor R111 is connected in series with the control end of the switching tube Q7 after being connected in series with the voltage stabilizing tube Z7, the first end of the switching tube Q7 is grounded, the second end of the switching tube Q7 is connected in series with the resistor R112 and the voltage source VCC and then is grounded, and the second end of the switching tube Q7 is further connected to the main control module 40 through the port DRMS 5_io. In this embodiment, the 2 current limiting circuits respectively include a resistor R58 and a resistor R111, the 2 selection circuits respectively include a voltage stabilizing tube Z1 and a voltage stabilizing tube Z7, and the 2 switching circuits respectively include a switching tube Q1 and a switching tube Q7.
In one embodiment, as shown in fig. 5, the second detection selecting unit includes: resistor R60, resistor R61, regulator Z2, switching tube Q3, resistor R113, resistor R114, regulator Z8, and switching tube Q8.
Specifically, the first end of the resistor R60 is connected to the communication module 20 through the port DRMS26, the second end of the resistor R60 is connected in series with the voltage stabilizing tube Z2 and then is connected to the control end of the switching tube Q3, the first end of the switching tube Q3 is grounded, the second end of the switching tube Q3 is connected in series with the resistor R61 and the voltage source VCC and then is grounded, the second end of the switching tube Q3 is further connected to the main control module 40 through the port DRMS2_io, the first end of the resistor R113 is connected to the communication module 20 through the port DRMS26, the second end of the resistor R113 is connected in series with the voltage stabilizing tube Z8 and then is connected to the control end of the switching tube Q8, the first end of the switching tube Q8 is grounded, the second end of the switching tube Q8 is connected in series with the resistor R114 and the voltage source VCC and then is grounded, and the second end of the switching tube Q8 is further connected to the main control module 40 through the port DRMS 6_io. In this embodiment, the 2 current limiting circuits respectively include a resistor R60 and a resistor R113, the 2 selection circuits respectively include a voltage stabilizing tube Z2 and a voltage stabilizing tube Z8, and the 2 switching circuits respectively include a switching tube Q3 and a switching tube Q8.
In one embodiment, as shown in fig. 6, the third detection selecting unit includes: resistor R62, resistor R63, regulator Z3, switching tube Q2, resistor R115, resistor R116, regulator Z9, and switching tube Q9.
Specifically, the first end of the resistor R62 is connected to the communication module 20 through the port DRMS37, the second end of the resistor R62 is connected in series with the voltage stabilizing tube Z3 and then is connected to the control end of the switching tube Q2, the first end of the switching tube Q2 is grounded, the second end of the switching tube Q2 is connected in series with the resistor R63 and the voltage source VCC and then is grounded, the second end of the switching tube Q2 is further connected to the main control module 40 through the port DRMS3_io, the first end of the resistor R115 is connected to the communication module 20 through the port DRMS37, the second end of the resistor R115 is connected in series with the control end of the switching tube Q9 after being connected in series with the voltage stabilizing tube Z9, the first end of the switching tube Q9 is grounded, the second end of the switching tube Q9 is connected in series with the resistor R116 and the voltage source VCC and then is grounded, and the second end of the switching tube Q9 is further connected to the main control module 40 through the port DRMS 7_io. In this embodiment, the 2 current limiting circuits respectively include a resistor R62 and a resistor R115, the 2 selection circuits respectively include a voltage stabilizing tube Z3 and a voltage stabilizing tube Z9, and the 2 switching circuits respectively include a switching tube Q2 and a switching tube Q9.
In one embodiment, as shown in fig. 7, the fourth detection selecting unit includes: resistor R64, resistor R65, regulator Z4, switching tube Q4, resistor R117, resistor R118, regulator Z10, and switching tube Q10.
Specifically, the first end of the resistor R64 is connected to the communication module 20 through the port DRMS48, the second end of the resistor R64 is connected in series with the voltage stabilizing tube Z4 and then is connected to the control end of the switching tube Q4, the first end of the switching tube Q4 is grounded, the second end of the switching tube Q4 is connected in series with the resistor R65 and the voltage source VCC and then is grounded, the second end of the switching tube Q4 is further connected to the main control module 40 through the port DRMS4_io, the first end of the resistor R117 is connected to the communication module 20 through the port DRMS48, the second end of the resistor R117 is connected in series with the control end of the switching tube Q10 after being connected in series with the voltage stabilizing tube Z10, the first end of the switching tube Q10 is grounded, the second end of the switching tube Q10 is connected in series with the resistor R118 and the voltage source VCC and then is grounded, and the second end of the switching tube Q10 is further connected to the main control module 40 through the port DRMS 8_io. In this embodiment, the 2 current limiting circuits respectively include a resistor R64 and a resistor R117, the 2 selection circuits respectively include a voltage stabilizing tube Z4 and a voltage stabilizing tube Z10, and the 2 switching circuits respectively include a switching tube Q4 and a switching tube Q10.
In one embodiment, as shown in fig. 8, the fifth detection selecting unit includes: resistor R107, regulator Z5, and switching transistor Q5.
Specifically, a first end of the resistor R107 is connected to the communication module 20 through a port Com/DRM0, a second end of the resistor R107 is connected in series with the voltage stabilizing tube Z5 and then connected to a control end of the switching tube Q5, a first end of the switching tube Q5 is grounded, a second end of the switching tube Q5 is connected in series with the resistor R107 and the voltage source VCC and then grounded, and a second end of the switching tube Q5 is also connected to the main control module 40 through a port DRMs0 IO.
In one embodiment, the power grid output power grid signal controls the switch S0 to the switch S9 to be opened or closed, and according to the condition of the switches S0 to S9, the IO voltage threshold (for example, high-low level signal) input to the main control module 40 is adapted by adjusting the values of the voltage stabilizing tubes Z1 to Z10 to adapt the DRMS15, DRMS37, DRMS26, and different voltages input by the DRMS48 to trigger the conduction of the transistors Q1 to Q10, so that the IO ports DRMS0_io, DRMS1_io, DRMS2_io, DRMS3_io, DRMS4_io, DRMS5_io, DRMS6_io, DRMS7_io, DRMS8_io are turned over, and the actions of the switches S0 to S9 are identified. The detection of the power grid signal output by the power grid is realized, and the instruction output by the power grid can be accurately detected.
In one embodiment, the switches S0-S9 are: 0 represents open and 1 represents closed, all of which are switch signal states actively issued by the local grid company. DRMS0_IO to DRMS8_IO states: h is high, L is low, and both are detected by the main control module 40, and specific embodiments will be described below.
In one embodiment, when the power grid signal output from the power grid controls all switches s0 to s9=0 of the command receiving board 10, the voltage at the communication module 20:；
the levels received by the main control module 40 are as follows:。
this achieves accurate detection of the grid signal received by the command receiving board 10 by the command detection circuit.
In one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s0=1, s1 to s8=0, the com/DRMS0 equivalent circuit is shown with reference to fig. 9, the remaining ports are all pulled up to VCC, and the voltage at the communication module 20 is:；
the levels received by the main control module 40 are as follows:。
this achieves accurate detection of the grid signal received by the command receiving board 10 by the command detection circuit.
In one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s0=0, s1=1, s2 to s8=0, and the equivalent circuits of DRMS15 and COM/DRMS0 are shown with reference to fig. 10, and the remaining ports are all pulled upVCC, voltage at the communication module 20 is:；
the receiving level of each IO port of the main control module 40 is as follows:。
this achieves accurate detection of the grid signal received by the command receiving board 10 by the command detection circuit.
In one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=s2=1, s0=0, s1=0, s3 to s8=0, as shown in fig. 11, the equivalent circuit of the DRMS26 and COM/DRMS0 is that the rest ports are pulled up to VCC, and the voltage at the communication module 20 is:
；
the receiving level of each IO port of the main control module 40 is as follows:。
this achieves accurate detection of the grid signal received by the command receiving board 10 by the command detection circuit.
In one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s3=1, s0=0, s1=0, s2=0, s4 to s8=0, as shown in fig. 12, the equivalent circuits of the DRMS37 and COM/DRMS0 are all pulled up to VCC, and the voltage at the communication module 20 is:
；
the receiving level of each IO port of the main control module 40 is as follows:。
this achieves accurate detection of the grid signal received by the command receiving board 10 by the command detection circuit.
In one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s4=1, s0 to s3=0, s5 to s8=0, as shown in fig. 13, the equivalent circuits of DRMS48 and COM/DRMS0 are all pulled up to VCC, and the voltage at the communication module 20 is:
；
the receiving level of each IO port of the main control module 40 is as follows:。
this achieves accurate detection of the grid signal received by the command receiving board 10 by the command detection circuit.
In one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s5=1, s0 to s4=0, s6 to s8=0, as shown in fig. 14, the equivalent circuits of DRMS15 and COM/DRMS0 are all pulled up to VCC, and the voltage at the communication module 20 is:
；/>
the receiving level of each IO port of the main control module 40 is as follows:。
in one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s6=1, s0 to s5=0, s7 to s8=0, as shown in fig. 15, the equivalent circuit of the DRMS26 and COM/DRMS0 is that the rest ports are pulled up to VCC, and the voltage at the communication module 20 is:
；
the receiving level of each IO port of the main control module 40 is as follows:。
in one implementation, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s7=1, s0 to s6=0, s8=0, as shown in fig. 16, the equivalent circuits of the DRMS37 and COM/DRMS0 are all pulled up to VCC, and the voltage at the communication module 20 is:
；
the receiving level of each IO port of the main control module 40 is as follows:。
in one embodiment, when the grid signal output by the grid controls the switch on the command receiving board 10: s9=1, s8=1, s0 to s7=0, as shown in fig. 17, the equivalent circuits of DRMS48 and COM/DRMS0 are all pulled up to VCC, and the voltage at the communication module 20 is:
；/>
the receiving level of each IO port of the main control module 40 is as follows:。
the embodiment of the application also provides a grid-connected device, which comprises: the command receiving board 10 is connected with the power grid and is used for receiving command signals of the power grid; and an instruction detection circuit as provided in any one of the embodiments above; the instruction detection circuit is connected to the instruction receiving board 10.
The embodiment of the application also provides electronic equipment, which comprises the instruction detection circuit provided by any one of the embodiments; or the electronic device comprises a grid-tie device as described above.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (10)
1. An instruction detection circuit, wherein the instruction detection circuit is connected with an instruction receiving board, the instruction detection circuit comprising:
the communication module is connected with the instruction receiving board and is used for receiving an instruction signal of the instruction receiving board;
the detection selection module is connected with the communication module and is used for receiving the instruction signal, carrying out current limiting and screening treatment on the instruction signal and generating an instruction detection signal;
the main control module is connected with the detection selection module and used for receiving the instruction detection signal, generating an instruction control signal according to the instruction detection signal and sending the instruction control signal to the target module, wherein the instruction control signal is used for controlling the working state of the target module.
2. The instruction detection circuit of claim 1, wherein the detection selection module comprises a plurality of detection selection units;
the communication module comprises a plurality of communication input ports and a plurality of communication output ports;
the communication input ports are connected with the instruction receiving board;
the detection selection units are respectively connected with the communication output ports in a one-to-one correspondence manner; each detection selection unit is used for receiving the corresponding command signals output by the corresponding connected communication output ports, and carrying out current limiting and screening processing on the command signals to generate corresponding command detection signals.
3. The instruction detection circuit of claim 2, wherein each of the detection select units includes at least one current limiting circuit and at least one select circuit;
the at least one current limiting circuit is connected with the communication output port and is used for carrying out current limiting treatment on the instruction signal;
the at least one selection circuit is connected with the at least one current limiting circuit and is used for carrying out selection processing on the instruction signals.
4. The instruction detection circuit of claim 3, wherein each of said detection select units further comprises at least one switching circuit;
the at least one switch circuit is connected with the at least one selection circuit and is used for generating the instruction detection signal according to the instruction signal after the selection processing.
5. The instruction detection circuit of claim 4, wherein the at least one selection circuit comprises at least one selection device connected in series between the at least one switching circuit and the at least one current limiting circuit.
6. The instruction detection circuit of claim 5, wherein the at least one selection device comprises a regulator tube; the first end of the voltage stabilizing tube is connected with the at least one switch circuit, and the second end of the voltage stabilizing tube is connected with the at least one current limiting circuit.
7. The instruction detection circuit of claim 5, wherein the at least one current limiting circuit comprises at least one current limiting resistor; the first end of the at least one current limiting resistor is connected with the communication output port, and the second end of the at least one current limiting resistor is connected with the at least one selection circuit.
8. The instruction detection circuit of claim 1, wherein the instruction detection circuit further comprises:
the filtering module is arranged between the communication module and the detection selection module and is used for filtering the instruction signal.
9. A grid-tie device, the grid-tie device comprising:
the command receiving plate is connected with the power grid and is used for receiving command signals of the power grid;
and an instruction detection circuit as claimed in any one of claims 1 to 8; the instruction detection circuit is connected with the instruction receiving board.
10. An electronic device comprising the instruction detection circuit of any one of claims 1 to 8; or the electronic device comprises a grid-tie device as claimed in claim 9.
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|---|---|---|---|
| CN202311469262.8A CN117200462B (en) | 2023-11-07 | 2023-11-07 | Instruction detection circuit, grid-connected device and electronic equipment |
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| CN202311469262.8A CN117200462B (en) | 2023-11-07 | 2023-11-07 | Instruction detection circuit, grid-connected device and electronic equipment |
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| CN117200462B (en) | 2024-03-26 |
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