CN103647455A - Portable intelligent monitoring power supply and monitoring method - Google Patents
Portable intelligent monitoring power supply and monitoring method Download PDFInfo
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- CN103647455A CN103647455A CN201310743314.6A CN201310743314A CN103647455A CN 103647455 A CN103647455 A CN 103647455A CN 201310743314 A CN201310743314 A CN 201310743314A CN 103647455 A CN103647455 A CN 103647455A
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Abstract
The invention discloses a portable intelligent monitoring power supply and a monitoring method, aiming at solving the problems that a conventional switching power supply hardly has a monitoring function, and an operating state of the power supply is inconveniently monitored by a user. The portable intelligent monitoring power supply comprises a rectification filter circuit (2) connected with 220V alternating current input (1), wherein the rectification filter circuit is connected with an RCD (Residual Current Device) clamping circuit (3); the RCD clamping circuit is connected with a high-frequency transformer (4); the high-frequency transformer is connected with band-filtering three-way direct current output (5); the band-filtering three-way direct current output is connected with a pulse width modulation (PWM) control and drive circuit (6) with feedback regulation, a partial pressure sampling circuit (7) and an overcurrent protection circuit (8) respectively; the PWM control and drive circuit is connected with the high-frequency transformer; the overcurrent protection circuit is connected with a PIC (positive-impedance converter) (9); the PIC is connected with the partial pressure sampling circuit, a photoelectric coupler (10) connected with the 220V alternating current input, and a liquid crystal display (LCD) (11) respectively. The method is used for monitoring the power supply.
Description
technical field:
the present invention relates to a kind of portable intelligent monitoring power supply and monitoring method.
background technology:
existing Switching Power Supply has that volume is little, lightweight, efficiency advantages of higher, but known according to existing document, high frequency transformer method for designing is perfect not, and rarely has monitoring function, is not easy to the running status of user's Real-Time Monitoring power supply.
summary of the invention:
the object of this invention is to provide a kind of portable intelligent monitoring power supply and monitoring method.
above-mentioned object realizes by following technical scheme:
a kind of portable intelligent monitoring power supply, its composition comprises: exchange with 220V the current rectifying and wave filtering circuit that input is connected, described current rectifying and wave filtering circuit is connected with RCD clamp circuit, described RCD clamp circuit is connected with high frequency transformer, described high frequency transformer is connected with the direct current output of band filtering San road, described controls and drive circuit with the PWM with feedback regulation respectively with the output of filtering San road direct current, pressure sampling circuit, current foldback circuit connects, described PWM control and drive circuit are connected with described high frequency transformer, described current foldback circuit is connected with PIC controller, described PIC controller respectively with described pressure sampling circuit, connect the photoelectrical coupler that described 220V exchanges input, LCD display connects.
described portable intelligent monitoring power supply, described LCD display adopts LCD12864, and described PIC controller carries A/D modular converter.
a monitoring method for portable intelligent monitoring power supply, reverse exciting topological structure be take as power supply main body in power supply main body loop, selects current-control type pulse width modulating chip driving switch pipe, through high frequency transformer coupling, and then output 3 road direct voltages; Testing circuit is sampled to input ac voltage, electric current by photoelectrical coupler, output low-pressure side detects 3 road voltages by electric resistance partial pressure method, select the single-chip microcomputer PIC that carries A/D modular converter to carry out computing, processing to sampled signal, and by input voltage, input current, input power, output voltage, output current, power output, the efficiency parameters of LCD12864 display power supply; Then, adopt Saber, Proteus software respectively emulation to be carried out in power supply main body loop and observation circuit, known after the output of observation circuit and LCD demonstration result, 3 be respectively+5V of road direct voltage output ,+12V ,-15V, and LCD demonstration result is consistent with 3 road Output rusults, confirmed the accuracy of this device; Finally, by building hardware circuit and test, confirmed the feasibility of this device.
the monitoring method of described portable intelligent monitoring power supply, main circuit adopts the inverse-excitation type structure with isolating transformer, by unidirectional the going of switch unit's device, drive high-frequency pulse transformer, when switching tube conducting and while driving the former limit of high-frequency pulse transformer, transformer secondary is powering load not, and when power switch pipe turn-offs, the energy of storage discharges to load end by isolating transformer or inductance, when switching tube conducting next time, just stop providing energy to load-side.
the monitoring method of described portable intelligent monitoring power supply, the sampling of input voltage, electric current is sampled by detecting resistance, and by photoelectrical coupler, it is isolated; Output voltage carries out dividing potential drop sampling by resistance to it, and output current is sampled by converting the form of voltage to; Signal after detection is given respectively the A/D conversion port of single-chip microcomputer, through the calculation process of single-chip microcomputer, and by LCD12864 display screen, the running status of this power supply is carried out to the real-time demonstration that refreshes; Current sample testing circuit, when 4～20mA electric current flows through 100 Europe sampling resistor R1, produces the voltage difference of 0.4～2V at the two ends of R1,,
。
the monitoring method of described portable intelligent monitoring power supply, system boot enters init state, comprises setting and initialization to the parameter of using in the definition of each I/O mouth, program; After the initialization of single-chip microcomputer finishes, enter the initialization of module, the initialization that comprises A/D modular converter and LCD12864 liquid crystal; After initialization finishes, system is opened A/D module converts the voltage of each sampled point is carried out to data sampling, and sampled result is carried out to digital filtering, and the data after filtering is processed are given liquid crystal and are shown through computing, processing, and program is got back to again the state after initialization after having moved once.
beneficial effect:
1. the present invention combines Saber and Proteus simulation software carries out emulation to power circuit and display circuit respectively, according to simulation result correction design, is convenient to later stage hardware circuit and realizes; High frequency transformer method for designing of the present invention is perfect, completes electric power main circuit, high frequency transformer, clamp circuit, control circuit, output filter circuit, and the design of testing circuit and output display circuit; The present invention exports the voltage that three tunnels have isolation features, and can Real-Time Monitoring display power supply operation conditions; Volume of the present invention is little, and cost is low, easy to carry and use.
2. the present invention carries out Real-Time Monitoring, collection by built-in microcontroller chip to power information, demonstrates the running status of this power supply after computing, processing, analysis clear and intuitively, and electric energy is realized to intelligent control.In actual Power supply occasion, to monitor and realize intelligentized management and control with electricity condition, be to save and rationally utilize the effective solution of electric energy.Outstanding feature of the present invention is the design that whole design process has comprised software and hardware, each several part all adopted corresponding software to carry out emulation, analysis, checking to it before building hardware circuit, and then designed a intelligent switch power source that meets Specifications requirement, can extend to industrial automatic control, electric power, scientific research, communication, instrument and meter, medical treatment, safety monitoring, the fields such as digital product.
accompanying drawing explanation:
accompanying drawing 1 is structural representation of the present invention.
accompanying drawing 2 is circuit theory diagrams of supply unit governor circuit of the present invention.
accompanying drawing 3 is main program flow charts of the present invention.
accompanying drawing 4 is circuit theory diagrams of current sample testing circuit of the present invention.
accompanying drawing 5 is circuit pictorial diagram of intellectual monitoring supply unit input side display interface of the present invention.
accompanying drawing 6 is circuit pictorial diagram of intellectual monitoring supply unit outlet side display interface of the present invention.
embodiment:
embodiment 1:
a kind of portable intelligent monitoring power supply, its composition comprises: exchange input 1 current rectifying and wave filtering circuit being connected 2 with 220V, described current rectifying and wave filtering circuit is connected with RCD clamp circuit 3, described RCD clamp circuit is connected with high frequency transformer 4, described high frequency transformer is connected with band filtering San road direct current output 5, described controls and drive circuit 6 with the PWM with feedback regulation respectively with the output of filtering San road direct current, pressure sampling circuit 7, current foldback circuit 8 connects, described PWM control and drive circuit are connected with described high frequency transformer, described current foldback circuit is connected with PIC controller 9, described PIC controller respectively with described pressure sampling circuit, connect the photoelectrical coupler 10 that described 220V exchanges input, LCD display 11 connects.
embodiment 2:
according to the portable intelligent monitoring power supply described in embodiment 1, described LCD display adopts LCD12864, and described PIC controller carries A/D modular converter.
embodiment 3:
the monitoring method of above-mentioned portable intelligent monitoring power supply, reverse exciting topological structure be take as power supply main body in power supply main body loop, selects current-control type pulse width modulating chip driving switch pipe, through high frequency transformer coupling, and then output 3 road direct voltages; Testing circuit is sampled to input ac voltage, electric current by photoelectrical coupler, output low-pressure side detects 3 road voltages by electric resistance partial pressure method, select the single-chip microcomputer PIC that carries A/D modular converter to carry out computing, processing to sampled signal, and by input voltage, input current, input power, output voltage, output current, power output, the efficiency parameters of LCD12864 display power supply; Then, adopt Saber, Proteus software respectively emulation to be carried out in power supply main body loop and observation circuit, known after the output of observation circuit and LCD demonstration result, 3 be respectively+5V of road direct voltage output ,+12V ,-15V, and LCD demonstration result is consistent with 3 road Output rusults, confirmed the accuracy of this device; Finally, by building hardware circuit and test, confirmed the feasibility of this device.
embodiment 4:
according to the monitoring method of the portable intelligent monitoring power supply described in embodiment 3, main circuit adopts the inverse-excitation type structure with isolating transformer, by unidirectional the going of switch unit's device, drive high-frequency pulse transformer, when switching tube conducting and while driving the former limit of high-frequency pulse transformer, transformer secondary is powering load not, and when power switch pipe turn-offs, the energy of storage discharges to load end by isolating transformer or inductance, when switching tube conducting next time, just stop providing energy to load-side.
embodiment 5:
according to the monitoring method of the portable intelligent monitoring power supply described in embodiment 3 or 4, the sampling of input voltage, electric current is sampled by detecting resistance, and by photoelectrical coupler, it is isolated; Output voltage carries out dividing potential drop sampling by resistance to it, and output current is sampled by converting the form of voltage to; Signal after detection is given respectively the A/D conversion port of single-chip microcomputer, through the calculation process of single-chip microcomputer, and by LCD12864 display screen, the running status of this power supply is carried out to the real-time demonstration that refreshes; Current sample testing circuit, when 4～20mA electric current flows through 100 Europe sampling resistor R1, produces the voltage difference of 0.4～2V at the two ends of R1,,
embodiment 6:
according to the monitoring method of the portable intelligent monitoring power supply described in embodiment 3 or 4 or 5, system boot enters init state, comprises setting and initialization to the parameter of using in the definition of each I/O mouth, program; After the initialization of single-chip microcomputer finishes, enter the initialization of module, the initialization that comprises A/D modular converter and LCD12864 liquid crystal; After initialization finishes, system is opened A/D module converts the voltage of each sampled point is carried out to data sampling, and sampled result is carried out to digital filtering, and the data after filtering is processed are given liquid crystal and are shown through computing, processing, and program is got back to again the state after initialization after having moved once.
embodiment 7:
the monitoring method of described portable intelligent monitoring power supply, be overall intelligence monitoring power circuit as shown in Figure 5 and Figure 6, specifically comprise rectification circuit, clamp circuit, high frequency transformer and auxiliary circuit, control drive circuit, microcontroller system circuit, output filter circuit, voltage and current sample circuit and LCD display circuit etc.The interface showing in Fig. 5 is the current running status of this power supply, mains input voltage U=230.6V, and input current I=1.02mA, standby power when unloaded is P=0.26W; What in Fig. 6, show is+power parameter of 5V output (OUT1) output, and current output voltage is 5.05V, and output current is 0.1A, and the conversion efficiency of power output P=0.52W and this power supply is 0.7.
Claims (6)
1. a portable intelligent is monitored power supply, its composition comprises: exchange with 220V the current rectifying and wave filtering circuit that input is connected, it is characterized in that: described current rectifying and wave filtering circuit is connected with RCD clamp circuit, described RCD clamp circuit is connected with high frequency transformer, described high frequency transformer is connected with the direct current output of band filtering San road, described controls and drive circuit with the PWM with feedback regulation respectively with the output of filtering San road direct current, pressure sampling circuit, current foldback circuit connects, described PWM control and drive circuit are connected with described high frequency transformer, described current foldback circuit is connected with PIC controller, described PIC controller respectively with described pressure sampling circuit, connect the photoelectrical coupler that described 220V exchanges input, LCD display connects.
2. portable intelligent monitoring power supply according to claim 1, is characterized in that: described LCD display adopts LCD12864, and described PIC controller carries A/D modular converter.
3. the portable intelligent described in a claim 1 or 2 is monitored the monitoring method of power supply, it is characterized in that: reverse exciting topological structure be take as power supply main body in power supply main body loop, select current-control type pulse width modulating chip driving switch pipe, through high frequency transformer coupling, and then output 3 road direct voltages; Testing circuit is sampled to input ac voltage, electric current by photoelectrical coupler, output low-pressure side detects 3 road voltages by electric resistance partial pressure method, select the single-chip microcomputer PIC that carries A/D modular converter to carry out computing, processing to sampled signal, and by input voltage, input current, input power, output voltage, output current, power output, the efficiency parameters of LCD12864 display power supply; Then, adopt Saber, Proteus software respectively emulation to be carried out in power supply main body loop and observation circuit, known after the output of observation circuit and LCD demonstration result, 3 be respectively+5V of road direct voltage output ,+12V ,-15V, and LCD demonstration result is consistent with 3 road Output rusults, confirmed the accuracy of this device; Finally, by building hardware circuit and test, confirmed the feasibility of this device.
4. portable intelligent according to claim 3 is monitored the monitoring method of power supply, it is characterized in that: main circuit adopts the inverse-excitation type structure with isolating transformer, by unidirectional the going of switch unit's device, drive high-frequency pulse transformer, when switching tube conducting and while driving the former limit of high-frequency pulse transformer, transformer secondary is powering load not, when power switch pipe turn-offs, the energy storing discharges to load end by isolating transformer or inductance, when switching tube conducting next time, just stop providing energy to load-side.
5. according to the monitoring method of the portable intelligent monitoring power supply described in claim 3 or 4, it is characterized in that: the sampling of input voltage, electric current is sampled by detecting resistance, and by photoelectrical coupler, it is isolated; Output voltage carries out dividing potential drop sampling by resistance to it, and output current is sampled by converting the form of voltage to; Signal after detection is given respectively the A/D conversion port of single-chip microcomputer, through the calculation process of single-chip microcomputer, and by LCD12864 display screen, the running status of this power supply is carried out to the real-time demonstration that refreshes; Current sample testing circuit, when 4～20mA electric current flows through 100 Europe sampling resistor R1, produces the voltage difference of 0.4～2V at the two ends of R1,,
6. according to the monitoring method of the portable intelligent monitoring power supply described in claim 3 or 4 or 5, it is characterized in that: system boot enters init state, comprise setting and initialization to the parameter of using in the definition of each I/O mouth, program; After the initialization of single-chip microcomputer finishes, enter the initialization of module, the initialization that comprises A/D modular converter and LCD12864 liquid crystal; After initialization finishes, system is opened A/D module converts the voltage of each sampled point is carried out to data sampling, and sampled result is carried out to digital filtering, and the data after filtering is processed are given liquid crystal and are shown through computing, processing, and program is got back to again the state after initialization after having moved once.
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Cited By (5)
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| CN105763075A (en) * | 2016-04-12 | 2016-07-13 | 张小林 | Generator rectifier for electric vehicle |
| CN105827118A (en) * | 2016-04-17 | 2016-08-03 | 合肥博雷电气有限公司 | Switching power supply high frequency transformer |
| CN106849651A (en) * | 2015-12-02 | 2017-06-13 | 雅达电子国际有限公司 | With for feeding back the power supply with the single isolating device of fault detect |
| CN108318829A (en) * | 2017-12-29 | 2018-07-24 | 广西贺州市桂东电子科技有限责任公司 | A kind of high frequency switch power maintenance conditions device and its test method |
| CN111830314A (en) * | 2020-07-11 | 2020-10-27 | 青岛鼎信通讯股份有限公司 | Power frequency voltage detection circuit based on medium-voltage carrier coupler |
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| CN111830314A (en) * | 2020-07-11 | 2020-10-27 | 青岛鼎信通讯股份有限公司 | Power frequency voltage detection circuit based on medium-voltage carrier coupler |
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