CN215575346U - Input signal detection circuit - Google Patents

Input signal detection circuit Download PDF

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Publication number
CN215575346U
CN215575346U CN202120802130.2U CN202120802130U CN215575346U CN 215575346 U CN215575346 U CN 215575346U CN 202120802130 U CN202120802130 U CN 202120802130U CN 215575346 U CN215575346 U CN 215575346U
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module
input signal
voltage
electrically connected
detection circuit
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CN202120802130.2U
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Chinese (zh)
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牛蝶衣
韩旭
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Xidian University
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Xidian University
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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Abstract

The utility model discloses an input signal detection circuit which comprises a signal acquisition system, wherein the signal acquisition system comprises an input signal module, the input signal module is electrically connected with an external power supply, a voltage detection module is arranged on one side of the input signal module, the input signal module is electrically connected with the voltage detection module, a single chip microcomputer is arranged on one side of the voltage detection module, the single chip microcomputer is electrically connected with the voltage detection module, a sampling module is arranged on one side of the single chip microcomputer, the sampling module is electrically connected with the single chip microcomputer, an information display system is arranged on one side of the sampling module, and the information display system is electrically connected with the sampling module. Has the advantages that: the input signal detection circuit has simple structure and low cost, is widely used and greatly enhances the capability of detecting the instantaneous value of the voltage.

Description

Input signal detection circuit
Technical Field
The utility model relates to the field of input signal detection, in particular to an input signal detection circuit.
Background
Under the conditions of fire hazard, emergency repair and the like of the photovoltaic power station, the direct-current high voltage at the side of the photovoltaic module can be turned off by one key by using the turn-off controller and the module turn-off device, so that emergency personnel can enter the photovoltaic power station as soon as possible, and the loss of the photovoltaic power station is reduced as far as possible. Specifically, the shutdown controller comprises an emergency stop button arranged at a far end, emergency personnel press the emergency stop button outside the photovoltaic power station to trigger the shutdown controller to generate a shutdown instruction, so that each component shutdown device executes shutdown actions to protect the photovoltaic power station.
The existing input signal detection circuit has the disadvantages of complex structure, high manufacturing cost, no wide application and poor capability of detecting the instantaneous value of voltage.
An effective solution to the problems in the related art has not been proposed yet.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to an input signal detection circuit to solve the above-mentioned problems.
In order to achieve the purpose, the utility model provides the following technical scheme:
according to one aspect of the utility model, the input signal detection circuit comprises a signal acquisition system, wherein the signal acquisition system comprises an input signal module, the input signal module is electrically connected with an external power supply, a voltage detection module is arranged on one side of the input signal module, the input signal module is electrically connected with the voltage detection module, a single chip microcomputer is arranged on one side of the voltage detection module, the single chip microcomputer is electrically connected with the voltage detection module, a sampling module is arranged on one side of the single chip microcomputer, the sampling module is electrically connected with the single chip microcomputer, an information display system is arranged on one side of the sampling module, and the information display system is electrically connected with the sampling module.
Further, the information display system comprises a display module, a storage module is arranged on one side of the display module, and the storage module is electrically connected with the display module and the sampling module.
Further, the voltage detection module includes voltage detection circuit, voltage detection circuit includes voltage input end, voltage input end one side is equipped with piezo-resistor, piezo-resistor one side is equipped with current transformer, current transformer one side precision resistance, precision resistance one side is equipped with voltage comparator, voltage comparator one side is equipped with not the door, not door one side is equipped with first control pulse, first control pulse has the second pulse.
Furthermore, a display screen is arranged on one side of the display module.
Further, according to another aspect of the present invention, a shutdown controller includes a controller mounting box, a pressing cap is disposed on the controller mounting box, a pressing rod is disposed below the pressing cap, a pressing block is disposed below the pressing rod, a pressing spring is disposed below the pressing block, a movable rack bar is disposed on one side of the pressing block, a first contact pad is disposed on one side of the pressing rod, a second contact pad is disposed below the first contact pad, a fixed engaging block is disposed on one side of the pressing rod away from the first contact pad, a rotating engaging block is disposed below the fixed engaging block, a thrust spring is disposed on one side of the rotating engaging block, a rotating gear is disposed on a periphery of the rotating engaging block, and the rotating gear is engaged with the movable rack bar.
Furthermore, a fuse is arranged on one side of the second contact pad. Compared with the prior art, the utility model has the following beneficial effects:
(1) the input signal detection circuit is simple in structure, low in manufacturing cost and beneficial to wide use, and the capacity of detecting the instantaneous value of the voltage is greatly enhanced.
(2) When an overvoltage signal enters a voltage input end, the piezoresistor is broken down to present a low resistance value or even approach a short circuit state, so that a large current is generated at the primary side of the current transformer, a small current is generated at the secondary side through the mutual inductance action of the coil, and the current signal is converted into a voltage signal through the precision resistor; after the signal is input into the voltage comparator, the voltage comparator outputs high level, the control pulse output by the NOT gate controls the power supply circuit, the switch power supply circuit is disconnected, and the standby power supply is started. The second pulse is sent to the interruption of the single chip microcomputer, the single chip microcomputer control circuit starts A/D conversion, and the instantaneous value of the overvoltage is sampled.
(3) The utility model discloses a rack bar, including fixed block piece, clamping piece, first contact gasket, second contact gasket, and the power of needs shutoff, it can to drive according to the depression bar downstream according to the depression cap, thereby press the depression cap through setting up, thereby press to drive according to the depression cap after the depression cap, thereby make fixed block piece and rotate behind the block of block, first contact gasket contacts with second contact gasket, thereby reach the purpose of circular telegram, only need when needs turn-offs the power remove rack bar remove can, mesh mutually with removing the rack bar through rotating gear, thereby it is rotatory to drive the rotation block piece when making to remove the rack bar removal, thereby reach the purpose of cancellation block, through setting up the fuse, thereby carry out the purpose of short circuit when reaching the short circuit.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic diagram of a main structure of an input signal detection circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a signal acquisition system in an input signal detection circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a shutdown controller of an input signal detection circuit according to an embodiment of the present invention;
fig. 4 is a right side view of a rotation block in an input signal detecting circuit according to an embodiment of the present invention.
Reference numerals:
1. a signal acquisition system; 2. an input signal module; 3. a voltage detection module; 301. a voltage input terminal; 302. a voltage dependent resistor; 303. a current transformer; 304. precision resistance; 305. a voltage comparator; 306. a NOT gate; 307. a control pulse; 308. a second pulse; 4. a single chip microcomputer; 5. a sampling module; 6. an information display system; 7. a display module; 8. a storage module; 9. a display screen; 10. a controller mounting box; 11. pressing the cap; 12. a pressing lever; 13. a pressing block; 14. moving the rack bar; 15. a first contact pad; 16. a second contact pad; 17. fixing the clamping block; 18. rotating the clamping block; 19. a thrust spring; 20. a rotating gear; 21. a fuse; 22. the spring is pressed.
Detailed Description
The following, with reference to the drawings and the detailed description, further description of the present invention is made:
the first embodiment is as follows:
referring to fig. 1 to 4, according to an embodiment of the present invention, an input signal detection circuit is provided, including a signal acquisition system 1, where the signal acquisition system 1 includes an input signal module 2, the input signal module 2 is electrically connected to an external power supply, a voltage detection module 3 is disposed on one side of the input signal module 2, the input signal module 2 is electrically connected to the voltage detection module 3, a single chip microcomputer 4 is disposed on one side of the voltage detection module 3, the single chip microcomputer 4 is electrically connected to the voltage detection module 3, a sampling module 5 is disposed on one side of the single chip microcomputer 4, the sampling module 5 is electrically connected to the single chip microcomputer 4, an information display system 6 is disposed on one side of the sampling module 5, and the information display system 6 is electrically connected to the sampling module 5.
According to the scheme of the utility model, the input signal module 2 is arranged, so that the input signal enters the voltage detection module 3 through the input signal module 2 for detection, the information is acquired by the sampling module 5 through the singlechip 4 after the input signal is detected by the voltage detection module 3, and then the acquired information is displayed through the information display system 6.
Example two:
referring to fig. 1 to 4, the information display system 6 includes a display module 7, a storage module 8 is disposed on one side of the display module 7, the storage module 8 and the display module 7 are both electrically connected to the sampling module 5, the voltage detection module 3 includes a voltage detection circuit, the voltage detection circuit includes a voltage input end 301, a voltage dependent resistor 302 is disposed on one side of the voltage input end 301, a current transformer 303 is disposed on one side of the voltage dependent resistor 302, a precision resistor 304 is disposed on one side of the current transformer 303, a voltage comparator 305 of an LM393 type is disposed on one side of the precision resistor 304, a not gate 306 is disposed on one side of the voltage comparator 305, a first control pulse 307 is disposed on one side of the not gate 306, a second pulse 308 is disposed under the first control pulse 307, and a display screen 9 is disposed on one side of the display module 7.
Through the scheme of the utility model, the display module 7 is arranged, so that information can be displayed through the display screen 9, and the storage module 8 achieves the purpose of storing information, when an overvoltage signal enters the voltage input end 301, the piezoresistor 302 is broken down to present a low resistance value or even a state close to a short circuit, so that a large current is generated on the primary side of the current transformer 303, a small current is generated on the secondary side through the mutual inductance effect of the coil, and then the current signal is converted into a voltage signal through the precision resistor 304; when this signal is input to the voltage comparator 305, the voltage comparator 305 outputs a high level, and the control pulse 307 output through the not gate 306 controls the power supply circuit to turn off the switching power supply circuit and start the backup power supply. The second pulse 308 is sent to the singlechip 4 for interruption, the singlechip 4 controls a loop to start A/D conversion, and the instantaneous value of the overvoltage is sampled.
Example three:
referring to fig. 1 to 4, according to an embodiment of the present invention, there is also provided a shutdown controller, including a controller mounting box 10, a pressing cap 11 is disposed on the controller mounting box 10, a pressing rod 12 is disposed under the pressing cap 11, a pressing block 13 is disposed under the pressing rod 12, a pressing spring 22 is disposed under the pressing block 13, a moving rack bar 14 is disposed on one side of the pressing block 13, a first contact pad 15 is disposed on one side of the pressing rod 12, a second contact pad 16 is disposed under the first contact pad 15, a fixed engaging block 17 is disposed on one side of the pressing rod 12 away from the first contact pad 15, a rotating engaging block 18 is disposed under the fixed engaging block 17, a thrust spring 19 is disposed on one side of the rotating engaging block 18, a rotating gear 20 is disposed on the periphery of the rotating engaging block 18, and the rotating gear 20 is engaged with the moving rack bar 14, the fuse 21 is provided on one side of the second contact pad 16.
According to the scheme of the utility model, the pressing cap 11 is arranged, so that the pressing rod 12 is driven to move downwards after the pressing cap 11 is pressed down, the fixed clamping block 17 is clamped with the rotating clamping block 18, the first contact gasket 15 is contacted with the second contact gasket 16, and the purpose of electrifying is achieved.
For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.
In practical application, the input signal module 2 is arranged, so that the input signal enters the voltage detection module 3 through the input signal module 2 for detection, after the voltage detection module 3 detects the voltage, the singlechip 4 is used for collecting information by the sampling module 5, and then, the collected information is displayed through an information display system 6, and through a display module 7, thereby, the information can be displayed through the display screen 9, the storage module 8 achieves the purpose of storing information, when an overvoltage signal enters the voltage input terminal 301, the voltage dependent resistor 302 is broken down, and presents a low resistance value even close to a short circuit state, this produces a large current at the primary side of the current transformer 303, which, through the mutual inductance of the coils, a small current is generated on the secondary side, and the current signal is converted into a voltage signal through a precision resistor 304; when this signal is input to the voltage comparator 305, the voltage comparator 305 outputs a high level, and the control pulse 307 output through the not gate 306 controls the power supply circuit to turn off the switching power supply circuit and start the backup power supply. The second pulse 308 is sent to the interruption of the single chip microcomputer 4, the single chip microcomputer 4 control loop starts A/D conversion, the instantaneous value of overvoltage is sampled, the pressing cap 11 is arranged, the pressing rod 12 is driven to move downwards after the pressing cap 11 is pressed down, the fixed clamping block 17 is clamped with the rotating clamping block 18, the first contact gasket 15 is in contact with the second contact gasket 16, the power-on purpose is achieved, only the rack rod 14 needs to be moved when the power supply needs to be turned off, the rotating gear 20 is meshed with the moving rack rod 14, the rotating clamping block 18 is driven to rotate when the moving rack rod 14 moves, the clamping purpose is cancelled, and the short circuit purpose is achieved by arranging the fuse 21.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. An input signal detection circuit, characterized by comprising a signal acquisition system (1), the signal acquisition system (1) comprises an input signal module (2), the input signal module (2) is electrically connected with an external power supply, a voltage detection module (3) is arranged on one side of the input signal module (2), the input signal module (2) is electrically connected with the voltage detection module (3), a single chip microcomputer (4) is arranged on one side of the voltage detection module (3), the single chip microcomputer (4) is electrically connected with the voltage detection module (3), a sampling module (5) is arranged on one side of the singlechip (4), the sampling module (5) is electrically connected with the singlechip (4), sampling module (5) one side is equipped with information display system (6), information display system (6) with sampling module (5) electric connection.
2. The input signal detection circuit according to claim 1, wherein the information display system (6) comprises a display module (7), a storage module (8) is disposed on one side of the display module (7), and both the storage module (8) and the display module (7) are electrically connected to the sampling module (5).
3. The input signal detection circuit according to claim 1, wherein the voltage detection module (3) comprises a voltage detection circuit, the voltage detection circuit comprises a voltage input end (301), a voltage dependent resistor (302) is arranged on one side of the voltage input end (301), a current transformer (303) is arranged on one side of the voltage dependent resistor (302), a precision resistor (304) is arranged on one side of the current transformer (303), a voltage comparator (305) is arranged on one side of the precision resistor (304), a not gate (306) is arranged on one side of the voltage comparator (305), a first control pulse (307) is arranged on one side of the not gate (306), and a second pulse (308) is arranged under the first control pulse (307).
4. An input signal detection circuit as claimed in claim 2, characterized in that a display screen (9) is provided on one side of the display module (7).
CN202120802130.2U 2021-04-19 2021-04-19 Input signal detection circuit Active CN215575346U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202120802130.2U CN215575346U (en) 2021-04-19 2021-04-19 Input signal detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202120802130.2U CN215575346U (en) 2021-04-19 2021-04-19 Input signal detection circuit

Publications (1)

Publication Number Publication Date
CN215575346U true CN215575346U (en) 2022-01-18

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ID=79856540

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202120802130.2U Active CN215575346U (en) 2021-04-19 2021-04-19 Input signal detection circuit

Country Status (1)

Country Link
CN (1) CN215575346U (en)

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