CN116599344A - Voltage-stabilizing power supply circuit of electric control system - Google Patents
Voltage-stabilizing power supply circuit of electric control system Download PDFInfo
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- CN116599344A CN116599344A CN202310583077.5A CN202310583077A CN116599344A CN 116599344 A CN116599344 A CN 116599344A CN 202310583077 A CN202310583077 A CN 202310583077A CN 116599344 A CN116599344 A CN 116599344A
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- triode
- power supply
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- 238000001514 detection method Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 41
- 230000000087 stabilizing effect Effects 0.000 claims description 17
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1213—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for DC-DC converters
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The invention discloses a voltage-stabilizing power supply circuit of an electric control system, which relates to the field of electric control systems, and comprises: the power supply module is used for supplying direct current and outputting the direct current to the switch module, the timing alarm module and the single-key control module; the switch module is used for constructing a loop between the power supply module and the voltage output module; the voltage output module is used for outputting direct-current voltage; compared with the prior art, the invention has the beneficial effects that: according to the invention, after the voltage output module outputs the maximum voltage, the high-power detection module drives the timing alarm module to work, when the voltage output module outputs the maximum voltage for a set time, the timing alarm module alarms to prompt a user, if the user needs to continue to use the maximum voltage for power supply, the timing alarm module is controlled to stop working through the single-key control module, alarm interference is avoided, and the single-key control module is not required to repeatedly control after the circuit is restarted.
Description
Technical Field
The invention relates to the field of electric control systems, in particular to a voltage-stabilizing power supply circuit of an electric control system.
Background
The electric control system comprises a power supply circuit, a protection circuit, a control circuit, a switch circuit and the like, and the circuits jointly control a certain object or a certain objects, so that the controlled equipment can safely and reliably operate.
The output voltage of the power supply circuit can be regulated within a certain range to match with equipment with different power supply requirements, and for the power supply circuit, the loss of components of the power supply circuit is large when the power supply circuit is at the maximum output voltage for a long time, so that a user cannot clearly know the situation, and improvement is needed.
Disclosure of Invention
The invention aims to provide a voltage-stabilizing power supply circuit of an electric control system so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a regulated power supply circuit for an electronic control system, comprising:
the power supply module is used for supplying direct current and outputting the direct current to the switch module, the timing alarm module and the single-key control module;
the switch module is used for constructing a loop between the power supply module and the voltage output module;
the voltage output module is used for outputting direct-current voltage;
the feedback voltage stabilizing module is used for feeding back and outputting voltage information to the voltage output module so that the voltage output module outputs a stable voltage;
the high-power detection module is used for detecting whether the output voltage of the voltage output module exceeds a threshold voltage or not, and when the output voltage exceeds the threshold voltage, the timing alarm module is driven to work;
the timing alarm module is used for timing after starting working, and alarming when the timing reaches a set value;
the single-key control module is used for controlling whether the timing alarm module works or not through keys and automatically recovering the initial state after restarting each time;
the output end of the power supply module is connected with the input end of the switch module, the first input end of the timing alarm module and the input end of the single-key control module, the output end of the switch module is connected with the first input end of the voltage output module, the output end of the voltage output module is connected with the input end of the feedback voltage stabilizing module and the input end of the high-power detection module, the output end of the feedback voltage stabilizing module is connected with the second input end of the voltage output module, the output end of the high-power detection module is connected with the second input end of the timing alarm module, and the output end of the single-key control module is connected with the third input end of the timing alarm module.
As still further aspects of the invention: the switch module comprises a first switch, a first resistor and a first capacitor, one end of the first switch is connected with the output end of the power supply module, the other end of the first switch is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the first capacitor and the first input end of the voltage output module, and the other end of the first capacitor is grounded.
As still further aspects of the invention: the voltage output module comprises a second resistor, a first triode, a third resistor and a second capacitor, wherein one end of the second resistor is connected with the collector of the first triode and the output end of the switch module, the other end of the second resistor is connected with the base of the first triode, the emitter of the first triode is connected with one end of the third resistor, one end of the second capacitor, the input end of the feedback voltage stabilizing module and the input end of the high-power detection module, the other end of the third resistor is grounded, and the other end of the second capacitor is grounded.
As still further aspects of the invention: the feedback voltage stabilizing module comprises a fourth resistor, a fifth resistor, a first diode, a second triode, a first potentiometer and a third capacitor, wherein one end of the fifth resistor is connected with the output end of the voltage output module, one end of the fourth resistor, the other end of the fifth resistor is connected with one end of the first potentiometer, one end of the third capacitor and the base electrode of the second triode, the other end of the third capacitor is grounded, the other end of the first potentiometer is grounded, the emitter electrode of the second triode is connected with the other end of the fourth resistor and the negative electrode of the first diode, the positive electrode of the first diode is grounded, and the collector electrode of the second triode is connected with the base electrode of the first triode.
As still further aspects of the invention: the high-power detection module comprises a second diode, a third triode, a fourth triode and a sixth resistor, wherein an emitter of the third triode is connected with a cathode of the second diode and an output end of the voltage output module, a positive electrode of the second diode is connected with one end of the sixth resistor, a base electrode of the fourth triode and a collector electrode of the third triode, a base electrode of the third triode is connected with the collector electrode of the fourth triode, and the other end of the sixth resistor is connected with the emitter of the fourth triode and a second input end of the timing alarm module.
As still further aspects of the invention: the timing alarm module comprises a seventh resistor, a fifth MOS tube, a fourth capacitor, a third diode, an eighth resistor, a sixth MOS tube, a fourth diode and a loudspeaker, wherein one end of the seventh resistor is connected with the output end of the high-power detection module, the other end of the seventh resistor is connected with one end of the fourth capacitor, the D pole of the fifth MOS tube and the negative pole of the third diode, the other end of the fourth capacitor is grounded, the S pole of the fifth MOS tube is grounded, the G pole of the fifth MOS tube is connected with the output end of the single-button control module, the positive pole of the third diode is connected with one end of the eighth resistor and the G pole of the sixth MOS tube, the other end of the eighth resistor is grounded, the D pole of the sixth MOS tube is connected with the negative pole of the fourth diode, the positive pole of the fourth diode is connected with the output end of the power supply module, the S pole of the sixth MOS tube is connected with one end of the loudspeaker, and the other end of the loudspeaker is grounded.
As still further aspects of the invention: the single-key control module comprises a second switch, a ninth resistor, a tenth resistor, an eleventh resistor, a seventh triode and an eighth triode, wherein one end of the second switch is connected with the output end of the power supply module, the other end of the second switch is connected with one end of the ninth resistor, the other end of the ninth resistor is connected with the base electrode of the seventh triode and one end of the eleventh resistor, the emitting electrode of the seventh triode is grounded, the collecting electrode of the seventh triode is connected with one end of the tenth resistor and the base electrode of the eighth triode, the other end of the tenth resistor is connected with the emitting electrode of the eighth triode and the output end of the power supply module, and the collecting electrode of the eighth triode is connected with the other end of the eleventh resistor and the third input end of the timing alarm module.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, after the voltage output module outputs the maximum voltage, the high-power detection module drives the timing alarm module to work, when the voltage output module outputs the maximum voltage for a set time, the timing alarm module alarms to prompt a user, if the user needs to continue to use the maximum voltage for power supply, the timing alarm module is controlled to stop working through the single-key control module, alarm interference is avoided, and the single-key control module is not required to repeatedly control after the circuit is restarted.
Drawings
Fig. 1 is a schematic diagram of a regulated power supply circuit for an electronic control system.
Fig. 2 is a circuit diagram of a first part of a regulated power supply circuit of an electronic control system.
Fig. 3 is a circuit diagram of a second portion of the regulated power supply circuit of the electronic control system.
Fig. 4 is a circuit diagram of a third portion of a regulated power supply circuit of an electronic control system.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, a voltage stabilizing power supply circuit of an electric control system includes:
the power supply module 1 is used for supplying direct current and outputting the direct current to the switch module 2, the timing alarm module 6 and the single-key control module 7;
a switch module 2 for constructing a loop between the power supply module 1 and the voltage output module 3;
a voltage output module 3 for outputting a direct current voltage;
the feedback voltage stabilizing module 4 is used for feeding back output voltage information to the voltage output module 3 so that the voltage output module 3 outputs a stable voltage;
the high-power detection module 5 is used for detecting whether the output voltage of the voltage output module 3 exceeds a threshold voltage or not, and when the output voltage exceeds the threshold voltage, the timing alarm module 6 is driven to work;
the timing alarm module 6 is used for timing after starting working, and alarming when the timing reaches a set value;
the single-key control module 7 is used for controlling whether the timing alarm module 6 works or not through keys and automatically recovering the initial state after restarting each time;
the output end of the power supply module 1 is connected with the input end of the switch module 2, the first input end of the timing alarm module 6 and the input end of the single-key control module 7, the output end of the switch module 2 is connected with the first input end of the voltage output module 3, the output end of the voltage output module 3 is connected with the input end of the feedback voltage stabilizing module 4 and the input end of the high-power detection module 5, the output end of the feedback voltage stabilizing module 4 is connected with the second input end of the voltage output module 3, the output end of the high-power detection module 5 is connected with the second input end of the timing alarm module 6, and the output end of the single-key control module 7 is connected with the third input end of the timing alarm module 6.
In particular embodiments: referring to fig. 2, the power supply module 1 outputs a dc voltage VIN to supply power to other modules, where the dc voltage VIN may be obtained by converting ac to a voltage, or may be obtained directly by a dc power supply.
In this embodiment: referring to fig. 2, the switch module 2 includes a first switch S1, a first resistor R1, and a first capacitor C1, wherein one end of the first switch S1 is connected to an output end of the power supply module 1, the other end of the first switch S1 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to one end of the first capacitor C1, a first input end of the voltage output module 3, and the other end of the first capacitor C1 is grounded.
The first switch S1 serves as a power supply switch, and after being pressed down, the power supply module 1 supplies power to the voltage output module 3 through the switch module 2.
In another embodiment: the first resistor R1 may be omitted, and the first resistor R1 is used for current limiting to prevent the circuit from excessively flowing.
In this embodiment: referring to fig. 2, the voltage output module 3 includes a second resistor R2, a first triode V1, a third resistor R3, and a second capacitor C2, one end of the second resistor R2 is connected to the collector of the first triode V1 and the output end of the switch module 2, the other end of the second resistor R2 is connected to the base of the first triode V1, the emitter of the first triode V1 is connected to one end of the third resistor R3, one end of the second capacitor C2, the input end of the feedback voltage stabilizing module 4, and the input end of the high-power detection module 5, the other end of the third resistor R3 is grounded, and the other end of the second capacitor C2 is grounded.
When the voltage is input, the voltage provides a high level for the base electrode of the first triode V1 (NPN) through the second resistor R2, and the first triode V1 conducts the output voltage.
In another embodiment: the second capacitor C2 may be omitted, and the second capacitor C2 is used for stabilizing the voltage, and reducing the voltage fluctuation when the output voltage of the first triode V1 is regulated.
In this embodiment: referring to fig. 2, the feedback voltage stabilizing module 4 includes a fourth resistor R4, a fifth resistor R5, a first diode D1, a second triode V2, a first potentiometer RP1, and a third capacitor C3, wherein one end of the fifth resistor R5 is connected to the output end of the voltage output module 3 and one end of the fourth resistor R4, the other end of the fifth resistor R5 is connected to one end of the first potentiometer RP1, one end of the third capacitor C3, and the base of the second triode V2, the other end of the third capacitor C3 is grounded, the other end of the first potentiometer RP1 is grounded, the emitter of the second triode V2 is connected to the other end of the fourth resistor R4, the cathode of the first diode D1, the anode of the first diode D1 is grounded, and the collector of the second triode V2 is connected to the base of the first triode V1.
The sum of the voltages on the fifth resistor R5 and the first potentiometer RP1 is the output voltage of the first triode V1, the voltage on the first potentiometer RP1 is the sampling voltage, and the sampling voltage is output to the second triode V2 (NPN), and the emitter voltage of the second triode V2 is fixed based on the first diode D1 (zener diode), so that when the output voltage of the first triode V1 changes, the voltage on the first potentiometer RP1 changes, the base voltage of the second triode V2 changes, the collector current of the second triode V2 changes, resulting in the base current reverse direction change of the first triode V1, the base voltage reverse direction change of the first triode V1, and the output voltage reverse direction change of the first triode V1, thereby constructing a regulated output.
In another embodiment, the first potentiometer RP1 may be replaced with a common resistor, such that the output voltage of the first transistor V1 cannot be adjusted.
In this embodiment: referring to fig. 3, the high-power detection module 5 includes a second diode D2, a third triode V3, a fourth triode V4, and a sixth resistor R6, wherein an emitter of the third triode V3 is connected to a cathode of the second diode D2, an output end of the voltage output module 3, an anode of the second diode D2 is connected to one end of the sixth resistor R6, a base of the fourth triode V4, and a collector of the third triode V3, a base of the third triode V3 is connected to the collector of the fourth triode V4, and another end of the sixth resistor R6 is connected to an emitter of the fourth triode V4, and a second input end of the timing alarm module 6.
The output voltage of the voltage output module 3 is adjusted based on the resistance value of the first potentiometer RP1, when the voltage of the voltage output module 3 does not reach the threshold voltage (i.e., the maximum voltage), the second diode D2 (the zener diode) is not conducted, when the voltage reaches the threshold voltage, the second diode D2 is conducted, a high level is provided for the base electrode of the fourth triode V4 (NPN), the fourth triode V4 is conducted, the base voltage of the third triode V3 (PNP) is pulled down, the third triode V3 is conducted, the base voltage of the fourth triode V4 is further increased, and finally the third triode V3 and the fourth triode V4 are rapidly and completely conducted, so that an electric signal is provided for the timing alarm module 6.
In another embodiment: light emitting diodes may be added to provide a threshold voltage indication.
In this embodiment: referring to fig. 3, the timing alarm module 6 includes a seventh resistor R7, a fifth MOS transistor V5, a fourth capacitor C4, a third diode D3, an eighth resistor R8, a sixth MOS transistor V6, a fourth diode D4, and a SPEAKER peak, wherein one end of the seventh resistor R7 is connected to the output end of the high-power detection module 5, the other end of the seventh resistor R7 is connected to one end of the fourth capacitor C4, the D pole of the fifth MOS transistor V5, the negative pole of the third diode D3, the other end of the fourth capacitor C4 is grounded, the S pole of the fifth MOS transistor V5 is grounded, the G pole of the fifth MOS transistor V5 is connected to the output end of the single-button control module 7, the positive pole of the third diode D3 is connected to one end of the eighth resistor R8, the G pole of the sixth MOS transistor V6, the other end of the eighth resistor R8 is grounded, the D pole of the sixth MOS transistor V6 is connected to the negative pole of the fourth diode D4, the positive pole of the fourth diode D4 is connected to the output end of the power supply module 1, and the other end of the sixth MOS transistor V6 is connected to the SPEAKER peak is grounded.
When voltage is input, the seventh resistor R7 charges the fourth capacitor C4, and as the voltage on the fourth capacitor C4 rises, the third diode D3 (the zener diode) is finally conducted, so that the sixth MOS tube V6 is conducted, the loudspeaker SPEAKER sounds to give an alarm, and the fourth diode D4 (the light-emitting diode) gives out a light prompt; the period of time that the voltage is input to the third diode D3 to be conducted is a safe time, the power supply circuit supplies power to the maximum voltage (threshold voltage) in a short time, the maximum voltage is not greatly influenced on each component, and the loss is large when the power supply circuit is in the maximum voltage for a long time, so when a user regulates the maximum voltage output, the timing alarm module 6 drives timing, and when the maximum voltage output time exceeds the safe time, the alarm can be sounded.
In another embodiment: only the fourth diode D4 or the SPEAKER may be used, the fourth diode D4 and the SPEAKER being complementary to each other, so that when one is prevented from being damaged, the other can continue to work to prompt the user.
In this embodiment: referring to fig. 4, the single-key control module 7 includes a second switch S2, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a seventh triode V7, and an eighth triode V8, wherein one end of the second switch S2 is connected to the output end of the power supply module 1, the other end of the second switch S2 is connected to one end of the ninth resistor R9, the other end of the ninth resistor R9 is connected to the base of the seventh triode V7 and one end of the eleventh resistor R11, the emitter of the seventh triode V7 is grounded, the collector of the seventh triode V7 is connected to one end of the tenth resistor R10 and the base of the eighth triode V8, the other end of the tenth resistor R10 is connected to the emitter of the eighth triode V8 and the output end of the power supply module 1, the collector of the eighth triode V8 is connected to the other end of the eleventh resistor R11, and the third input end of the timing alarm module 6.
After the timing alarm module 6 prompts the user, for reasons such as emergency production, when the user needs to continue to use, and in order to avoid the disturbance of the timing alarm module 6, at this time, the user presses the second switch S2 (the push switch is sprung after pressing), the seventh triode V7 (NPN) is turned on, and then the base voltage of the eighth triode V8 (PNP) is pulled down, the eighth triode V8 is turned on, and then the base of the seventh triode V7 is provided with a high level through the eleventh resistor R11, the conduction of the seventh triode V7 is maintained, and meanwhile, the G pole (common point a) of the fifth MOS tube V5 is provided with a high level, the fifth MOS tube V5 is grounded, and the voltage on the fourth capacitor C4 is discharged, so that the SPEAKER speake is not driven, and the operation of the fourth diode D4 affects the user. After the circuit is restarted, the power supply voltage VIN is disconnected based on the power-off factor, and the single-button control module 7 resumes the initial state again.
In another embodiment: the seventh triode V7 can be provided with a pull-down resistor to avoid false triggering.
The working principle of the invention is as follows: the power supply module 1 is used for supplying direct current and outputting the direct current to the switch module 2, the timing alarm module 6 and the single-key control module 7; the switch module 2 is used for constructing a loop between the power supply module 1 and the voltage output module 3; the voltage output module 3 is used for outputting direct-current voltage; the feedback voltage stabilizing module 4 is used for feeding back output voltage information to the voltage output module 3 so that the voltage output module 3 outputs a stabilized voltage; the high-power detection module 5 is used for detecting whether the output voltage of the voltage output module 3 exceeds a threshold voltage or not, and when the output voltage exceeds the threshold voltage, the timing alarm module 6 is driven to work; the timing alarm module 6 is used for timing after starting working, and alarming when the timing reaches a set value; the single-key control module 7 is used for controlling whether the timing alarm module 6 works or not through keys, and automatically recovering the initial state after restarting each time.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (7)
1. A voltage-stabilizing power supply circuit of an electric control system is characterized in that:
the voltage-stabilizing power supply circuit of the electric control system comprises:
the power supply module is used for supplying direct current and outputting the direct current to the switch module, the timing alarm module and the single-key control module;
the switch module is used for constructing a loop between the power supply module and the voltage output module;
the voltage output module is used for outputting direct-current voltage;
the feedback voltage stabilizing module is used for feeding back and outputting voltage information to the voltage output module so that the voltage output module outputs a stable voltage;
the high-power detection module is used for detecting whether the output voltage of the voltage output module exceeds a threshold voltage or not, and when the output voltage exceeds the threshold voltage, the timing alarm module is driven to work;
the timing alarm module is used for timing after starting working, and alarming when the timing reaches a set value;
the single-key control module is used for controlling whether the timing alarm module works or not through keys and automatically recovering the initial state after restarting each time;
the output end of the power supply module is connected with the input end of the switch module, the first input end of the timing alarm module and the input end of the single-key control module, the output end of the switch module is connected with the first input end of the voltage output module, the output end of the voltage output module is connected with the input end of the feedback voltage stabilizing module and the input end of the high-power detection module, the output end of the feedback voltage stabilizing module is connected with the second input end of the voltage output module, the output end of the high-power detection module is connected with the second input end of the timing alarm module, and the output end of the single-key control module is connected with the third input end of the timing alarm module.
2. The voltage stabilizing power supply circuit of electric control system according to claim 1, wherein the switch module comprises a first switch, a first resistor and a first capacitor, one end of the first switch is connected with the output end of the power supply module, the other end of the first switch is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the first capacitor and the first input end of the voltage output module, and the other end of the first capacitor is grounded.
3. The voltage-stabilizing power supply circuit of the electric control system according to claim 1, wherein the voltage output module comprises a second resistor, a first triode, a third resistor and a second capacitor, one end of the second resistor is connected with a collector electrode of the first triode and an output end of the switch module, the other end of the second resistor is connected with a base electrode of the first triode, an emitter electrode of the first triode is connected with one end of the third resistor, one end of the second capacitor, an input end of the feedback voltage-stabilizing module and an input end of the high-power detection module, the other end of the third resistor is grounded, and the other end of the second capacitor is grounded.
4. The voltage-stabilizing power supply circuit of electric control system according to claim 3, wherein the feedback voltage-stabilizing module comprises a fourth resistor, a fifth resistor, a first diode, a second triode, a first potentiometer and a third capacitor, one end of the fifth resistor is connected with the output end of the voltage output module and one end of the fourth resistor, the other end of the fifth resistor is connected with one end of the first potentiometer, one end of the third capacitor and the base of the second triode, the other end of the third capacitor is grounded, the other end of the first potentiometer is grounded, the emitter of the second triode is connected with the other end of the fourth resistor and the negative electrode of the first diode, the positive electrode of the first diode is grounded, and the collector of the second triode is connected with the base of the first triode.
5. The voltage-stabilizing power supply circuit of electric control system according to claim 1, wherein the high-power detection module comprises a second diode, a third triode, a fourth triode and a sixth resistor, the emitter of the third triode is connected with the cathode of the second diode and the output end of the voltage output module, the anode of the second diode is connected with one end of the sixth resistor, the base of the fourth triode and the collector of the third triode, the base of the third triode is connected with the collector of the fourth triode, and the other end of the sixth resistor is connected with the emitter of the fourth triode and the second input end of the timing alarm module.
6. The voltage-stabilizing power supply circuit of the electric control system according to claim 1, wherein the timing alarm module comprises a seventh resistor, a fifth MOS tube, a fourth capacitor, a third diode, an eighth resistor, a sixth MOS tube, a fourth diode and a loudspeaker, one end of the seventh resistor is connected with the output end of the high-power detection module, the other end of the seventh resistor is connected with one end of the fourth capacitor, the D pole of the fifth MOS tube and the negative pole of the third diode, the other end of the fourth capacitor is grounded, the S pole of the fifth MOS tube is grounded, the G pole of the fifth MOS tube is connected with the output end of the single-key control module, the positive pole of the third diode is connected with one end of the eighth resistor and the G pole of the sixth MOS tube, the other end of the eighth resistor is grounded, the D pole of the sixth MOS tube is connected with the negative pole of the fourth diode, the positive pole of the fourth diode is connected with the output end of the power supply module, the S pole of the sixth MOS tube is connected with one end of the loudspeaker, and the other end of the loudspeaker is grounded.
7. The voltage-stabilizing power supply circuit of electric control system according to claim 1, characterized in that the single-key control module comprises a second switch, a ninth resistor, a tenth resistor, an eleventh resistor, a seventh triode and an eighth triode, one end of the second switch is connected with the output end of the power supply module, the other end of the second switch is connected with one end of the ninth resistor, the other end of the ninth resistor is connected with the base electrode of the seventh triode and one end of the eleventh resistor, the emitter electrode of the seventh triode is grounded, the collector electrode of the seventh triode is connected with one end of the tenth resistor and the base electrode of the eighth triode, the other end of the tenth resistor is connected with the emitter electrode of the eighth triode and the output end of the power supply module, and the collector electrode of the eighth triode is connected with the other end of the eleventh resistor and the third input end of the timing alarm module.
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| CN202310583077.5A CN116599344A (en) | 2023-05-23 | 2023-05-23 | Voltage-stabilizing power supply circuit of electric control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117134292A (en) * | 2023-10-26 | 2023-11-28 | 深圳清大电子科技有限公司 | Safety protection circuit of display screen |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117134292A (en) * | 2023-10-26 | 2023-11-28 | 深圳清大电子科技有限公司 | Safety protection circuit of display screen |
| CN117134292B (en) * | 2023-10-26 | 2024-01-23 | 深圳清大电子科技有限公司 | Safety protection circuit of display screen |
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