CN106533215B - Monitoring equipment power supply stabilized voltage supply device - Google Patents
Monitoring equipment power supply stabilized voltage supply device Download PDFInfo
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- CN106533215B CN106533215B CN201611208655.3A CN201611208655A CN106533215B CN 106533215 B CN106533215 B CN 106533215B CN 201611208655 A CN201611208655 A CN 201611208655A CN 106533215 B CN106533215 B CN 106533215B
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- 238000012544 monitoring process Methods 0.000 title description 12
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 29
- 238000012806 monitoring device Methods 0.000 claims abstract description 13
- 239000003990 capacitor Substances 0.000 claims description 271
- 238000001914 filtration Methods 0.000 claims description 11
- 230000003287 optical effect Effects 0.000 claims description 8
- 101710116850 Molybdenum cofactor sulfurase 2 Proteins 0.000 claims 2
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc power output without possibility of reversal 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
- H02M7/217—Conversion of ac power input into dc power output without possibility of reversal 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
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/12—Arrangements for reducing harmonics from ac input or output
- H02M1/126—Arrangements for reducing harmonics from ac input or output using passive filters
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/44—Circuits or arrangements for compensating for electromagnetic interference in converters or inverters
-
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
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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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Dc-Dc Converters (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model provides a supervisory equipment power supply stabilized power supply device, includes input socket, switching device, PFC inductance and two voltage stabilizing module, voltage stabilizing module includes switching power supply device, first gauge outfit device, second gauge outfit device, fuse and output binding post, switching device is connected with input socket and PFC inductance respectively, and switching power supply device is connected with the PFC inductance, and switching power supply device is connected with first gauge outfit device, second gauge outfit device and output binding post respectively, and first gauge outfit device passes through the fuse and is connected with output binding post, and second gauge outfit device passes through the fuse and is connected with output binding post, and output binding post passes through the step-down module and is connected with monitoring device. The switching power supply device receives the secondary feedback information, adjusts the working frequency and ensures the stability of the power supply voltage of the transmission line.
Description
Technical Field
The invention relates to a monitoring equipment power supply stabilized voltage supply device.
Background
Video monitoring is an important component of a security system, and comprises a front-end camera, a transmission cable and a video monitoring platform, so that video monitoring is intuitively, accurately and timely used for a plurality of occasions and has rich information content. With the rapid development of computers, networks, image processing and transmission technologies, video monitoring technologies have also rapidly developed, in which a camera is used as an important information input component in video monitoring, because the monitoring line is long, if monitoring under the condition of voltage stability cannot be ensured, the stability of a video monitoring system can be reduced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the monitoring equipment power supply stabilized voltage supply device capable of guaranteeing the stability of the power supply voltage of the transmission line.
In order to solve the technical problems, the switching power supply comprises an input socket, a switching device, a PFC inductor and two voltage stabilizing modules, wherein the voltage stabilizing modules comprise a switching power supply device, a first meter device, a second meter device, a fuse and an output connecting terminal, the switching device is respectively connected with the input socket and the PFC inductor, the switching power supply device is respectively connected with the first meter device, the second meter device and the output connecting terminal, the first meter device is connected with the output connecting terminal through the fuse, the second meter device is connected with the output connecting terminal through the fuse, the output connecting terminal is connected with a monitoring device through a voltage reducing module, and the switching power supply device comprises a filter circuit, a rectifying filter circuit, a switching management IC control circuit, an IC working voltage starting voltage stabilizing circuit, an OCP overcurrent load protecting circuit, a secondary rectifying filter circuit, an output voltage current control circuit, a feedback circuit, an overvoltage protecting circuit and a working indicator lamp.
The filter circuit has the function of improving the electromagnetic compatibility and electromagnetic interference of the whole circuit. The rectifying and filtering circuit is used for converting alternating current into direct current and outputting the direct current, and has the filtering effect. The OCP overcurrent overload circuit mainly plays a role in overcurrent protection and short-circuit protection. The IC operating voltage starting voltage stabilizing circuit provides starting and stable operating voltage for the switch management IC control circuit. The feedback circuit receives the secondary feedback information and feeds the feedback information back to the switch management IC control circuit to adjust the operating frequency. The output voltage and current control circuit is used for setting the output voltage value and the output current. The overvoltage protection circuit plays a role in overvoltage protection when the output control circuit fails. The feedback circuit receives the secondary feedback information and feeds the feedback information back to the switch management IC control circuit to adjust the working frequency, so that the stability of the power supply voltage of the transmission line is ensured.
As a further improvement of the invention, the filter circuit comprises a capacitor CX1, a capacitor CX2, a capacitor CY1, a capacitor CY2, a capacitor CY6, a capacitor CY7, a capacitor LF1, a capacitor LF2, a capacitor LF3, a resistor R1 and a resistor R2, wherein one end of the capacitor LF3 is connected in parallel with the capacitor CY2 and the capacitor CY6, the capacitor CY2 is connected in series with the capacitor CY6, the other end of the capacitor LF3 is connected in parallel with the capacitor CX1, the capacitor CX1 is connected in parallel with the resistor R1 and the resistor R2, the resistor R1 is connected in series with the resistor R2, one end of the capacitor LF1 is connected in parallel with the resistor R1 and the resistor R2, the other end of the capacitor LF1 is connected in parallel with the capacitor CX2, the capacitor CY1 is connected in series with the capacitor CY2, and one end of the capacitor LF2 is connected in parallel with the capacitor CY1 and the capacitor CY 2.
As a further improvement of the invention, the rectifying and filtering circuit comprises a rectifying bridge DB1, a polar capacitor C1 and a polar capacitor C29, wherein the polar capacitor C1 is connected in parallel between the first pin and the second pin of the rectifying bridge DB1, and the polar capacitor C29 is connected in parallel between the first pin and the second pin of the rectifying bridge DB 1.
As a further improvement of the invention, the switch management IC control circuit comprises a power management IC, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a MOS tube Q1, a MOS tube Q2, a diode D1 and a diode D2, wherein a first pin of the power management IC is respectively connected with the resistor R7 and the capacitor C3, the capacitor C3 is respectively connected with the capacitor C4 and the capacitor C5, the capacitor C4 and the capacitor C5 are respectively connected with a third pin of the power management IC, a second pin of the power management IC is respectively connected with the resistor R8 and the capacitor C2, a fourth pin of the power management IC is connected with the resistor R7, a fifth pin of the power management IC is connected with the resistor R9, the resistor R9 is connected with the resistor R7, the capacitor C7 is connected in parallel between a seventh pin and an eighth pin of the power management IC, the tenth pin of the power management IC is connected with a source electrode of the MOS tube Q2, the eleventh pin of the power management IC is connected with the diode D2 and the resistor R15 respectively, the diode D2 is connected with the resistor R14 in series, the resistor R14 and the resistor R15 are connected with a grid electrode of the MOS tube Q2, the fourteenth pin of the power management IC is connected with the capacitor C6, the source electrode of the MOS tube Q1 and a drain electrode of the MOS tube Q2 respectively, the fifteenth pin of the power management IC is connected with the diode D1 and the resistor R13 respectively, the diode D1 is connected with the resistor R12, the resistor R12 and the resistor R13 are connected with a grid electrode of the MOS tube Q1, the capacitor C6 is connected in parallel between the fourteenth pin and the sixteenth pin of the power management IC, the drain electrode of the MOS tube Q1 is connected with the resistor R3, the resistor R3 is connected with the resistor R4, the resistor R4 is connected with the resistor R5 and the resistor R6 respectively, the resistor R5 is grounded, resistor R6 is connected to the seventh pin of the power management IC.
As a further improvement of the invention, the IC operating voltage starting voltage stabilizing circuit includes a diode D5, a diode D6, a voltage stabilizing diode ZD1, a polar capacitor C12, a polar capacitor C14, a capacitor C13, a resistor R19, a resistor R20, a resistor R27, a resistor R28 and a triode Q3, the diode D5, the resistor R27 and the resistor R28 are connected in series, the resistor R28 is respectively connected with the positive electrode of the polar capacitor C12, the capacitor C13 and the emitter of the triode Q3, the resistor R19 is connected in parallel between the collector and the base of the triode Q3, the collector of the triode Q3 is respectively connected with the positive electrode of the polar capacitor C14 and the negative electrode of the diode D6, the positive electrode of the diode D6 is connected with the resistor R20, the base of the triode Q3 is connected with the negative electrode of the voltage stabilizing diode ZD1, and the positive electrode of the diode ZD1 is respectively connected with the negative electrode of the polar capacitor C14, the capacitor C13 and the negative electrode of the polar capacitor C12.
As a further improvement of the invention, the OCP overcurrent load protection circuit comprises a resistor R16, a resistor R17, a resistor R18, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a diode D3 and a diode D4, wherein the resistor R16, the resistor R17, the capacitor C8, the capacitor C9 and the diode D4 are connected in series, the cathode of the diode D3 is connected with the capacitor C9, the anode of the diode D3 is respectively connected with the cathode of the diode D4 and the capacitor C10, the anode of the diode D4 is connected with the capacitor C11, and the capacitor C11 is connected in series with the resistor R18 and the capacitor C10.
As a further improvement of the invention, the secondary rectifying and filtering circuit comprises a diode D7, a diode D8, a polar capacitor C26, a polar capacitor C27, a polar capacitor C28 and a polar capacitor C30, wherein the diode D7 is connected with the diode D8 in parallel, the cathode of the diode D7 is connected with the anode of the polar capacitor C26, and the polar capacitor C26, the polar capacitor C27, the polar capacitor C28 and the polar capacitor C30 are connected in parallel.
As a further improvement of the invention, the output voltage and current control circuit comprises a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a resistor R42, a resistor R43, a resistor R44, a polarity capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a zener diode ZD3, a diode D10, an optocoupler U2, an operational amplifier U3A, an operational amplifier U3B, a capacitor C21 is respectively connected with a seventh pin and a sixth pin of the operational amplifier U3B, a seventh pin of the operational amplifier U3B is respectively connected with a cathode of a diode D10, an anode of the diode D10 is respectively connected with the optocoupler U2 and the resistor R31, the resistor R31 is respectively connected with the cathode of the zener diode ZD3 and an anode of the polarity capacitor C20, the cathode of the polar capacitor C20 is connected with the anode of the voltage stabilizing diode ZD3 and grounded, the anode of the polar capacitor C20 is connected with a resistor R44, the resistor R44 is connected with a capacitor C24, the fourth pin of the operational amplifier U3A is connected with the capacitor C24, the first pin of the operational amplifier U3A is connected with the cathode of the diode D10, the resistor R43 is respectively connected with the third pin and the eighth pin of the operational amplifier U3A, the capacitor C25 is respectively connected with the third pin and the fourth pin of the operational amplifier U3A, the first pin of the operational amplifier U3A is connected with a capacitor C23, the capacitor C23 is connected with a resistor R38, the resistor R38 is connected with the second pin of the operational amplifier U3A, the second pin of the operational amplifier U3A is respectively connected with a resistor R36, a resistor R37 and a resistor R39, the resistor R36 is connected with a resistor R35, the resistor R37 is respectively connected with the fifth pin of the operational amplifier U3B, the resistor R23 is respectively connected with the fifth pin of the operational amplifier U3B and the third pin of the operational amplifier U3A, and the sixth pin of the operational amplifier U3B is respectively connected with the resistor R32 and the capacitor C22, and the capacitor C22 is grounded.
As a further improvement of the present invention, the feedback circuit includes a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor 25, a resistor 29, a thermistor 26, a capacitor C15, a capacitor C16, and an optocoupler U2, one end of the resistor R24 is connected to one end of the resistor R23, the other end of the resistor R23 is connected to one end of the resistor R21, one end of the resistor R21 is connected to one end of the capacitor C15 and one end of the resistor R22, the other end of the capacitor C15 is connected to the other end of the resistor R24, one end of the resistor C16, one end of the thermistor 26, and one end of the optocoupler U2, the other end of the resistor R22 is connected to one end of the resistor 25, one end of the resistor R29, and the other end of the optocoupler U2, the other end of the resistor R25 is connected to the other end of the capacitor C16, and the other end of the resistor R29 is connected to the other end of the thermistor 26.
As a further improvement of the invention, the overvoltage protection circuit comprises an optocoupler U4, a zener diode ZD2 and a resistor R40, wherein one end of the optocoupler U4 is respectively connected with the positive electrode of the zener diode ZD2 and one end of the resistor R40, and the other end of the resistor R40 is grounded.
In summary, the invention has the advantage of ensuring the stable power supply voltage of the transmission line.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is an electrical diagram of the present invention.
Fig. 2 is a circuit diagram of the switching power supply device of the present invention.
Fig. 3 is a circuit diagram of a filter circuit of the present invention.
Fig. 4 is a circuit diagram of the rectifying and filtering circuit of the present invention.
Fig. 5 is a circuit diagram of the switch management IC control circuit of the present invention.
Fig. 6 is a circuit diagram of an IC operating voltage start-up voltage regulator circuit of the present invention.
Fig. 7 is a circuit diagram of an OCP overcurrent load protection circuit of the present invention.
Fig. 8 is a circuit diagram of the secondary rectifying and filtering circuit of the present invention.
Fig. 9 is a circuit diagram of an output voltage current control circuit of the present invention.
Fig. 10 is a circuit diagram of a feedback circuit of the present invention.
Fig. 11 is a circuit diagram of an overvoltage protection circuit of the present invention.
Detailed Description
As shown in fig. 1 to 11, the invention comprises an input socket 1, a switching device 2, a PFC inductor 3 and two voltage stabilizing modules, wherein the voltage stabilizing modules comprise a switching power supply device 4, a first meter device 5, a second meter device 6, a fuse 7 and an output connecting terminal 8, the switching device 2 is respectively connected with the input socket 1 and the PFC inductor 3, the switching power supply device 4 is connected with the PFC inductor 3, the switching power supply device 4 is respectively connected with the first meter device 5, the second meter device 6 and the output connecting terminal 8, the first meter device 5 is connected with the output connecting terminal 8 through the fuse 7, the second meter device 6 is connected with the output connecting terminal 8 through the fuse 7, the output connecting terminal 8 is connected with a monitoring device 10 through a voltage reducing module 9, the switching power supply device 4 comprises a filter circuit 11, a rectifying filter circuit 12, a switch management IC control circuit 13, an IC working voltage starting voltage stabilizing circuit 14, an OCP overcurrent load protection circuit 15, a secondary rectifying filter circuit 16, an output voltage current control circuit 17, a feedback circuit 18, an overvoltage protection circuit 19 and an operation indicator lamp 20, wherein the filter circuit 11 is respectively connected with the rectifying filter circuit 12 and the IC working voltage starting voltage stabilizing circuit 14, the switch management IC control circuit 13 is respectively connected with the rectifying filter circuit 12, the IC working voltage starting voltage stabilizing circuit 14, the OCP overcurrent load protection circuit 15, the secondary rectifying filter circuit 16 and the feedback circuit 18, the feedback circuit 18 is connected with the overvoltage protection circuit 19, and the operation indicator lamp 20 is respectively connected with the output voltage current control circuit 17 and the secondary rectifying filter circuit 16. The filter circuit 11 comprises a capacitor CX1, a capacitor CX2, a capacitor CY1, a capacitor CY2, a capacitor CY6, a capacitor CY7, an inductor LF1, an inductor LF2, an inductor LF3, a resistor R1 and a resistor R2, wherein one end of the inductor LF3 is connected with the capacitor CY2 and the capacitor CY6 in parallel, the capacitor CY2 and the capacitor CY6 are connected in series, the other end of the inductor LF3 is connected with the capacitor CX1 in parallel, the capacitor CX1 is connected with the resistor R1 and the resistor R2 in parallel, the other end of the inductor LF1 is connected with the capacitor CX2 in parallel, the capacitor CX2 is connected with the capacitor CY1 and the capacitor CY2 in parallel, one end of the inductor LF2 is connected with the capacitor CY1 and the capacitor CY2 in series. The rectifying and filtering circuit 12 comprises a rectifying bridge DB1, a polar capacitor C1 and a polar capacitor C29, wherein the polar capacitor C1 is connected in parallel between a first pin and a second pin of the rectifying bridge DB1, and the polar capacitor C29 is connected in parallel between the first pin and the second pin of the rectifying bridge DB 1. The switch management IC control circuit 13 comprises a power management IC, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a MOS tube Q1, a MOS tube Q2, a diode D1 and a diode D2, wherein a first pin of the power management IC is respectively connected with the resistor R7 and the capacitor C3, the capacitor C3 is respectively connected with the capacitor C4 and the capacitor C5, the capacitor C4 and the capacitor C5 are respectively connected with a third pin of the power management IC, a second pin of the power management IC is respectively connected with the resistor R8 and the capacitor C2, a fourth pin of the power management IC is connected with the resistor R7, a fifth pin of the power management IC is connected with the resistor R9, the resistor R9 is connected with the resistor R7, the capacitor C7 is connected between a seventh pin and an eighth pin of the power management IC in parallel, the tenth pin of power management IC is connected with the source of MOS pipe Q2, the eleventh pin of power management IC is connected with diode D2 and resistance R15 respectively, diode D2 is connected in series with resistance R14, resistance R14 and resistance R15 are connected with the grid of MOS pipe Q2, the fourteenth pin of power management IC is connected with electric capacity C6 respectively, the source of MOS pipe Q1, the drain electrode of MOS pipe Q2 respectively, the fifteenth pin of power management IC is connected with diode D1 respectively, resistance R13, diode D1 is connected with resistance R12, resistance R12 and resistance R13 are connected with the grid of MOS pipe Q1, electric capacity C6 connects in parallel between the fourteenth pin of power management IC and the sixteenth pin, the drain electrode of MOS pipe Q1 is connected with resistance R3, resistance R3 is connected with resistance R4, resistance R4 is connected with resistance R5 and resistance R6 respectively, resistance R5 ground, resistance R6 is connected with the seventh pin of power management IC. The IC working voltage starting voltage stabilizing circuit 14 comprises a diode D5, a diode D6, a voltage stabilizing diode ZD1, a polar capacitor C12, a polar capacitor C14, a capacitor C13, a resistor R19, a resistor R20, a resistor R27, a resistor R28 and a triode Q3, wherein the diode D5, the resistor R27 and the resistor R28 are connected in series, the resistor R28 is respectively connected with the positive electrode of the polar capacitor C12, the capacitor C13 and the emitter of the triode Q3, the resistor R19 is connected between the collector and the base of the triode Q3 in parallel, the collector of the triode Q3 is respectively connected with the positive electrode of the polar capacitor C14 and the negative electrode of the diode D6, the positive electrode of the diode D6 is connected with the resistor R20, the base of the triode Q3 is connected with the negative electrode of the voltage stabilizing diode ZD1, and the positive electrode of the voltage stabilizing diode ZD1 is respectively connected with the negative electrode of the polar capacitor C14, the capacitor C13 and the negative electrode of the polar capacitor C12. The OCP overcurrent load protection circuit 15 comprises a resistor R16, a resistor R17, a resistor R18, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a diode D3 and a diode D4, wherein the resistor R16, the resistor R17, the capacitor C8, the capacitor C9 and the diode D4 are connected in series, the negative electrode of the diode D3 is connected with the capacitor C9, the positive electrode of the diode D3 is respectively connected with the negative electrode of the diode D4 and the capacitor C10, the positive electrode of the diode D4 is connected with the capacitor C11, and the capacitor C11 is connected in series with the resistor R18 and the capacitor C10. The secondary rectifying and filtering circuit 16 includes a diode D7, a diode D8, a polar capacitor C26, a polar capacitor C27, a polar capacitor C28, and a polar capacitor C30, where the diode D7 is connected in parallel with the diode D8, the negative electrode of the diode D7 is connected with the positive electrode of the polar capacitor C26, and the polar capacitor C26, the polar capacitor C27, the polar capacitor C28, and the polar capacitor C30 are connected in parallel. The output voltage and current control circuit 17 comprises a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a resistor R42, a resistor R43, a resistor R44, a polar capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a zener diode ZD3, a diode D10, an optocoupler U2, an operational amplifier U3A and an operational amplifier U3B, wherein the capacitor C21 is respectively connected with a seventh pin and a sixth pin of the operational amplifier U3B, the seventh pin of the operational amplifier U3B is connected with the cathode of the diode D10, the anode of the diode D10 is respectively connected with the optocoupler U2 and the resistor R31, the resistor R31 is connected with the resistor R42, the anode of the resistor R42 is respectively connected with the cathode of the zener diode ZD3 and the anode of the polar capacitor C20, the cathode of the polar capacitor C20 is connected with the anode of the zener diode ZD3 and grounded, the positive pole of the polar capacitor C20 is connected with a resistor R44, the resistor R44 is connected with a capacitor C24, a fourth pin of the operational amplifier U3A is connected with the capacitor C24, a first pin of the operational amplifier U3A is connected with a negative pole of a diode D10, a resistor R43 is respectively connected with a third pin and an eighth pin of the operational amplifier U3A, a capacitor C25 is respectively connected with the third pin and the fourth pin of the operational amplifier U3A, a first pin of the operational amplifier U3A is connected with a capacitor C23, the capacitor C23 is connected with a resistor R38, the resistor R38 is connected with a second pin of the operational amplifier U3A, a second pin of the operational amplifier U3A is respectively connected with a resistor R36, a resistor R37 and a resistor R39, the resistor R36 is connected with a resistor R35, the resistor R37 is respectively connected with a fifth pin of the operational amplifier U3B, the resistor R23 is respectively connected with a fifth pin of the operational amplifier U3B and a third pin of the operational amplifier U3A, the sixth pin of the operational amplifier U3B is connected to the resistor R32 and the capacitor C22, respectively, and the capacitor C22 is grounded. The feedback circuit 18 comprises a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor 25, a resistor 29, a thermistor 26, a capacitor C15, a capacitor C16 and an optical coupler U2, wherein one end of the resistor R24 is connected with one end of the resistor R23, the other end of the resistor R23 is connected with one end of the resistor R21, one end of the resistor R21 is respectively connected with one end of the capacitor C15 and one end of the resistor R22, the other end of the capacitor C15 is respectively connected with the other end of the resistor R24, one end of the capacitor C16, one end of the thermistor 26 and one end of the optical coupler U2, the other end of the resistor R22 is respectively connected with one end of the resistor 25, one end of the resistor R29 and the other end of the optical coupler U2, the other end of the resistor R25 is connected with the other end of the capacitor C16, and the other end of the resistor R29 is connected with the other end of the thermistor 26. The overvoltage protection circuit 19 includes an optocoupler U4, a zener diode ZD2, and a resistor R40, where one end of the optocoupler U4 is connected to the positive electrode of the zener diode ZD2 and one end of the resistor R40, and the other end of the resistor R40 is grounded. Here, the output voltage/current control circuit 17 and the feedback circuit 18 share one optocoupler U2.
The filter circuit 11 functions to improve electromagnetic compatibility and electromagnetic interference of the overall circuit. The rectifier bridge DB1 of the rectifier filter circuit 12 converts the ac power into dc power for output, and the polarity capacitor C1 and the polarity capacitor C29 have a filtering effect. The OCP overcurrent overload circuit mainly plays a role in overcurrent protection and short-circuit protection. The IC operating voltage start-up voltage stabilizing circuit 14 provides a start-up and stable operating voltage to the switching management IC control circuit 13. The MOS transistors Q1 and Q2 of the switch management IC control circuit 13 form a half-bridge operation mode to alternately operate, and other elements of the switch management IC control circuit 13 form a switch management IC peripheral circuit. The feedback circuit 18 receives the secondary feedback information through the optocoupler U2 and feeds back the feedback information to the switching management IC control circuit 13 to adjust the operating frequency. The output voltage/current control circuit 17 compares the operational amplifier IC to set the output voltage value and the output current. The overvoltage protection circuit 19 functions as overvoltage protection when the output control circuit fails. The feedback circuit receives the secondary feedback information and feeds the feedback information back to the switch management IC control circuit 13 to adjust the operating frequency, thereby ensuring the stability of the power supply voltage of the transmission line.
Claims (10)
1. The utility model provides a supervisory equipment power supply regulated power supply device, includes input socket, switching device, PFC inductance and two voltage stabilizing module, its characterized in that: the voltage stabilizing module comprises a switching power supply device, a first gauge outfit device, a second gauge outfit device, a fuse and an output wiring terminal, wherein the switching power supply device is connected with an input socket and a PFC inductor respectively, the switching power supply device is connected with the first gauge outfit device, the second gauge outfit device and the output wiring terminal respectively, the first gauge outfit device is connected with the output wiring terminal through the fuse, the second gauge outfit device is connected with the output wiring terminal through the fuse, the output wiring terminal is connected with a monitoring device through a voltage reducing module, the switching power supply device comprises a filter circuit, a rectifying filter circuit, a switch management IC control circuit, an IC working voltage starting voltage stabilizing circuit, an OCP overcurrent load protection circuit, a secondary rectifying filter circuit, an output voltage current control circuit, a feedback circuit, an overvoltage protection circuit and a working indicator lamp, the filter circuit is connected with the rectifying filter circuit and the IC working voltage starting voltage stabilizing circuit respectively, the switch management IC control circuit is connected with the rectifying filter circuit, the IC working voltage starting voltage stabilizing circuit, the OCP overcurrent load protection circuit, the secondary rectifying filter circuit and the feedback lamp, and the feedback lamp is connected with the overvoltage protection circuit and the output voltage control circuit respectively.
2. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the filter circuit comprises a capacitor CX1, a capacitor CX2, a capacitor CY1, a capacitor CY2, a capacitor CY6, a capacitor CY7, an inductor LF1, an inductor LF2, an inductor LF3, a resistor R1 and a resistor R2, wherein one end of the inductor LF3 is connected with the capacitor CY2 and the capacitor CY6 in parallel, the capacitor CY2 and the capacitor CY6 are connected in series, the other end of the inductor LF3 is connected with the capacitor CX1 in parallel, the capacitor CX1 is connected with the resistor R1 and the resistor R2 in parallel, the other end of the inductor LF1 is connected with the capacitor CX2 in parallel in which one end of the inductor LF2 is connected with the capacitor CY1 and the capacitor CY2 in parallel in series, and one end of the inductor LF2 is connected with the capacitor CY1 and the capacitor CY2 in parallel.
3. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the rectifying and filtering circuit comprises a rectifying bridge DB1, a polar capacitor C1 and a polar capacitor C29, wherein the polar capacitor C1 is connected in parallel between a first pin and a second pin of the rectifying bridge DB1, and the polar capacitor C29 is connected in parallel between the first pin and the second pin of the rectifying bridge DB 1.
4. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the switch management IC control circuit includes a power management IC, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a capacitor C2, a capacitor C3, a capacitor C4, a capacitor C5, a capacitor C6, a capacitor C7, a MOS transistor Q1, a MOS transistor Q2, a diode D1, and a diode D2, wherein a first pin of the power management IC is connected to the resistor R7 and the capacitor C3, respectively, a capacitor C3 is connected to the capacitor C4 and the capacitor C5, a capacitor C4, a capacitor C5 is connected to a third pin of the power management IC, a second pin of the power management IC is connected to the resistor R8 and the capacitor C2, respectively, a fourth pin of the power management IC is connected to the resistor R7, a fifth pin of the power management IC is connected to the resistor R9, a resistor R9 is connected in parallel to the resistor C7, a seventh pin of the power management IC is connected to the MOS transistor Q2, a tenth pin of the power management IC is connected to the MOS transistor Q2, a drain of the MOS transistor Q2 is connected to the resistor R6, a sixteenth pin of the MOS transistor Q2 is connected to the resistor R1, a drain of the resistor R14 is connected to the MOS transistor Q2, a drain of the resistor 12 is connected to the MOS transistor Q2, a resistor 12 is connected to the MOS 2, a drain of the resistor, and a drain is connected to the MOS 2, and a resistor 12, and a drain is connected to a resistor, and a drain of the resistor, and a resistor, a drain is connected.
5. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the IC working voltage starting voltage stabilizing circuit comprises a diode D5, a diode D6, a voltage stabilizing diode ZD1, a polar capacitor C12, a polar capacitor C14, a capacitor C13, a resistor R19, a resistor R20, a resistor R27, a resistor R28 and a triode Q3, wherein the diode D5, the resistor R27 and the resistor R28 are connected in series, the resistor R28 is respectively connected with the positive electrode of the polar capacitor C12, the capacitor C13 and the emitter of the triode Q3, the resistor R19 is connected between the collector and the base of the triode Q3 in parallel, the collector of the triode Q3 is respectively connected with the positive electrode of the polar capacitor C14 and the negative electrode of the diode D6, the positive electrode of the diode D6 is connected with the resistor R20, the base of the triode Q3 is connected with the negative electrode of the voltage stabilizing diode ZD1, and the positive electrode of the voltage stabilizing diode ZD1 is respectively connected with the negative electrode of the polar capacitor C14, the capacitor C13 and the negative electrode of the polar capacitor C12.
6. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the OCP overcurrent load protection circuit comprises a resistor R16, a resistor R17, a resistor R18, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a diode D3 and a diode D4, wherein the resistor R16, the resistor R17, the capacitor C8, the capacitor C9 and the diode D4 are connected in series, the negative electrode of the diode D3 is connected with the capacitor C9, the positive electrode of the diode D3 is respectively connected with the negative electrode of the diode D4 and the capacitor C10, the positive electrode of the diode D4 is connected with the capacitor C11, and the capacitor C11 is connected with the resistor R18 and the capacitor C10 in series.
7. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the secondary rectifying and filtering circuit comprises a diode D7, a diode D8, a polar capacitor C26, a polar capacitor C27, a polar capacitor C28 and a polar capacitor C30, wherein the diode D7 is connected with the diode D8 in parallel, the cathode of the diode D7 is connected with the anode of the polar capacitor C26, and the polar capacitor C26, the polar capacitor C27, the polar capacitor C28 and the polar capacitor C30 are connected in parallel.
8. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the output voltage and current control circuit comprises a resistor R30, a resistor R31, a resistor R32, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a resistor R42, a resistor R43, a resistor R44, a polar capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a zener diode ZD3, a diode D10, an optocoupler U2, an operational amplifier U3A and an operational amplifier U3B, wherein the capacitor C21 is respectively connected with a seventh pin and a sixth pin of the operational amplifier U3B, the seventh pin of the operational amplifier U3B is connected with the cathode of a diode D10, the anode of the diode D10 is respectively connected with the optocoupler U2 and the resistor R31, the resistor R31 is connected with the resistor R42, the cathode of the resistor R42 is respectively connected with the cathode of the zener diode ZD3 and the anode of the polar capacitor C20, the cathode of the polar capacitor C20 is connected with the anode of the zener diode ZD3 and grounded, the positive pole of the polar capacitor C20 is connected with a resistor R44, the resistor R44 is connected with a capacitor C24, a fourth pin of the operational amplifier U3A is connected with the capacitor C24, a first pin of the operational amplifier U3A is connected with a negative pole of a diode D10, a resistor R43 is respectively connected with a third pin and an eighth pin of the operational amplifier U3A, a capacitor C25 is respectively connected with the third pin and the fourth pin of the operational amplifier U3A, a first pin of the operational amplifier U3A is connected with a capacitor C23, the capacitor C23 is connected with a resistor R38, the resistor R38 is connected with a second pin of the operational amplifier U3A, a second pin of the operational amplifier U3A is respectively connected with a resistor R36, a resistor R37 and a resistor R39, the resistor R36 is connected with a resistor R35, the resistor R37 is respectively connected with a fifth pin of the operational amplifier U3B, the resistor R23 is respectively connected with a fifth pin of the operational amplifier U3B and a third pin of the operational amplifier U3A, the sixth pin of the operational amplifier U3B is connected to the resistor R32 and the capacitor C22, respectively, and the capacitor C22 is grounded.
9. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the feedback circuit comprises a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor 25, a resistor 29, a thermistor 26, a capacitor C15, a capacitor C16 and an optical coupler U2, wherein one end of the resistor R24 is connected with one end of the resistor R23, the other end of the resistor R23 is connected with one end of the resistor R21, one end of the resistor R21 is respectively connected with one end of the capacitor C15 and one end of the resistor R22, the other end of the resistor C15 is respectively connected with the other end of the resistor R24, one end of the capacitor C16, one end of the thermistor 26 and one end of the optical coupler U2, the other end of the resistor R22 is respectively connected with one end of the resistor 25, one end of the resistor R29 and the other end of the optical coupler U2, the other end of the resistor R25 is connected with the other end of the capacitor C16, and the other end of the resistor R29 is connected with the other end of the thermistor 26.
10. The monitoring device power supply stabilized voltage supply apparatus as claimed in claim 1, wherein: the overvoltage protection circuit comprises an optical coupler U4, a zener diode ZD2 and a resistor R40, wherein one end of the optical coupler U4 is respectively connected with the positive electrode of the zener diode ZD2 and one end of the resistor R40, and the other end of the resistor R40 is grounded.
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| CN111327187A (en) * | 2020-04-23 | 2020-06-23 | 深圳市汇凌信息技术有限公司 | Display screen constant voltage power supply circuit with overcurrent detection function |
| CN111918031B (en) * | 2020-07-22 | 2022-07-01 | 南京科沃云计算信息技术有限公司 | Disease and insect pest image processing system and method based on 5G transmission technology |
| CN111918030B (en) * | 2020-07-22 | 2022-07-01 | 南京科沃云计算信息技术有限公司 | Crop disease and insect pest identification system based on edge calculation and identification method thereof |
| CN111934553A (en) * | 2020-08-07 | 2020-11-13 | 厦门能瑞康电子有限公司 | Separately excited micro-power module |
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