CN102520626B - Power supply control system of field on-line monitoring device - Google Patents
Power supply control system of field on-line monitoring device Download PDFInfo
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- CN102520626B CN102520626B CN2011104241075A CN201110424107A CN102520626B CN 102520626 B CN102520626 B CN 102520626B CN 2011104241075 A CN2011104241075 A CN 2011104241075A CN 201110424107 A CN201110424107 A CN 201110424107A CN 102520626 B CN102520626 B CN 102520626B
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- 238000012806 monitoring device Methods 0.000 title abstract 2
- 230000000087 stabilizing effect Effects 0.000 claims description 29
- 238000001914 filtration Methods 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 11
- 239000004099 Chlortetracycline Substances 0.000 claims description 4
- 239000004100 Oxytetracycline Substances 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 description 13
- 239000004104 Oleandomycin Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 239000004105 Penicillin G potassium Substances 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- -1 E502 Substances 0.000 description 3
- 239000001099 ammonium carbonate Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L sodium carbonate Substances [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 239000004181 Flavomycin Substances 0.000 description 1
- 239000004186 Penicillin G benzathine Substances 0.000 description 1
- 239000004187 Spiramycin Substances 0.000 description 1
- 239000004182 Tylosin Substances 0.000 description 1
- 239000004188 Virginiamycin Substances 0.000 description 1
- 230000005059 dormancy Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention discloses a power supply control system of a field on-line monitoring device. The power supply control system comprises a control unit, a GPRS (General Packet Radio Service) module, a plurality of loads connected in parallel and isolated power supply modules. The GPRS module is connected with the control unit through a first voltage-stabilizing circuit, and receives a control signal of the control unit; the load in each path is provided with a second voltage-stabilizing circuit, and each second voltage-stabilizing circuit is respectively connected with one isolated power supply module, and each isolated power supply module is connected to the control unit, so as to receive the control signal of the control unit; the load connected in parallel of each path is connected to one isolated power supply module, and the isolated power supply module is connected with the control unit so as to receive the control signal of the control unit.
Description
Technical field
The present invention relates to a kind of electric power system, be specifically related to the electric power supply control system of a kind of field on-Line Monitor Device.
Background technology
A lot of power equipments in electric system are arranged on open air, and some is even on high-tension line.The device that these power equipments is carried out to on-line monitoring inevitably will be arranged on open air, and therefore how to on-Line Monitor Device, power supply is problem demanding prompt solution easily.
Solar powered power supply is divided into Charge Management and two parts of power supply management.Main being responsible for of Charge Management part utilizes sun power to charge the battery to greatest extent, reaches the power supply control that fills between administration battery pack.The main power supply control of being responsible for each data acquisition channel of front end of power supply management part, to reach the optimized power supply that utilizes, reach the purpose of power saving.
Existing electric power supply control system is owing to can't realizing that the electric power system to each power equipment controls separately, thereby can't regulate delivery according to the need for electricity of each power equipment, cause the waste of a large amount of electric energy.
Summary of the invention
The electric power supply control system that the purpose of this invention is to provide a kind of field on-Line Monitor Device, controlled separately to each circuit to realize, rationally control power-on time, to reduce energy consumption, reach optimization ground power utilization.
For achieving the above object, the invention provides the electric power supply control system of a kind of field on-Line Monitor Device, it comprises:
One control module,
One GPRS module, be connected the control signal of reception control unit with control module by one first mu balanced circuit;
Be equipped with one second mu balanced circuit in some load ，Ge road loads that are connected in parallel, each second mu balanced circuit connects respectively an isolation supply module, and each is isolated supply module and is connected to control module, the control signal of reception control unit; The load that each road is connected in parallel is connected to an insulating power supply module, and this insulating power supply module is connected with control module, the control signal of reception control unit.
During described GPRS module transmission data, need transient high-current, the present invention to adopt two voltage stabilizing chips to be connected in parallel, and at output terminal the United Nations General Assembly's electric capacity of voltage stabilizing chip, so that instantaneous large-current to be provided.
Described insulating power supply module comprises the input Voltage stabilizing module connected successively, high-frequency drive module, transformer rectification module and filtration module.
Described high-frequency drive module comprises:
One first drives chip and one second to drive chip, 1 pin of the first driving chip connects the positive pole of the first diode, the negative pole of the first diode connects 6 pin of the first driving chip, first drives the positive pole of 8 pin connection one second diodes of chip, and the negative pole of the second diode connects 6 pin of the first driving chip; Second drives the positive pole of 1 pin connection one the 3rd diode of chip, and the negative pole of the 3rd diode connects 6 pin of the second driving chip, and 8 pin of the second driving chip connect the positive pole of one the 4th diode, and the negative pole connection second of the 4th diode drives 6 pin of chip;
One first electric capacity and one second electric capacity, they drive 6 pin of chip to be connected with 7 pin with first after being connected in parallel;
One the 3rd electric capacity and one the 4th electric capacity, they drive 6 pin of chip to be connected with 7 pin with second after being connected in parallel;
One first resistance and one second resistance, they be connected in parallel after an end and first drive 3,4 pin of chip to be connected, 2 pin, 7 pin of the other end and the first driving chip are connected;
One the 3rd resistance and one the 4th resistance, they are connected in series a rear end and second and drive 3,4 pin of chip to be connected with the collector of a triode, the other end is connected to the port of control module, the base stage of described triode connects the port of one the 5th resistance, one the 5th diode and control module successively, forms the working control circuit of the second driving chip.
Described transformer rectification module comprises:
One first transformer, its main coil is connected with described high-frequency drive module, and two ends of its secondary coil connect respectively the positive pole of one the 6th diode and one the 7th diode, and the negative pole of the 6th diode and the 7th diode interconnects;
One the 5th electric capacity, be connected with the neutral point of the first transformer, and stabilized voltage supply is provided;
One second transformer, its main coil is connected with described high-frequency drive module, and two ends of its secondary coil connect respectively the positive pole of one the 8th diode and one the 9th diode, and the negative pole of the 8th diode and the 9th diode interconnects;
One the 6th electric capacity, be connected with the neutral point of the second transformer, and stabilized voltage supply is provided;
The positive pole of described the 5th electric capacity and the 6th electric capacity interconnects.
Described isolation supply module comprises:
One voltage stabilizing chip circuit, it comprises a voltage stabilizing chip;
One photoelectric coupled circuit, described photoelectric coupled circuit comprises: an optocoupler, its 1 pin is connected with an end of one the 6th resistance, the other end of the 6th resistance is connected with described control module, and be connected with a wire jumper, 2 pin of described optocoupler and 3 pin ground connection, 4 pin of described optocoupler are connected with described voltage stabilizing chip circuit.
The invention has the advantages that, control separately GPRS feed circuit and isolation supply module by control module, can realize opening power supply when peripheral hardware is worked, and on one's own time all in off-position, reaching the reasonable utilization of power supply, guarantee lowest energy consumption, to save the energy, also reduce costs.
The accompanying drawing explanation
Fig. 1 is the structured flowchart of electric power supply control system under a kind of embodiment of a kind of field of the present invention on-Line Monitor Device.
Fig. 2 is the power supply circuit of GPRS module under a kind of embodiment in the electric power supply control system of a kind of field of the present invention on-Line Monitor Device.
Fig. 3 is the circuit diagram of input Voltage stabilizing module under a kind of embodiment in the electric power supply control system of a kind of field of the present invention on-Line Monitor Device.
Fig. 4 is insulating power supply module medium-high frequency driver module, transformer rectification module and the circuit diagram of filtration module under a kind of embodiment of the electric power supply control system of a kind of field of the present invention on-Line Monitor Device.
Fig. 5 is the circuit diagram of isolation supply module voltage stabilizing chip circuit in a kind of way of example of the electric power supply control system of a kind of field of the present invention on-Line Monitor Device.
Fig. 6 is the circuit diagram of isolation supply module photoelectric coupled circuit in a kind of way of example of the electric power supply control system of a kind of field of the present invention on-Line Monitor Device.
Embodiment
Below in conjunction with specific embodiment, the electric power supply control system of field of the present invention on-Line Monitor Device is further explained to explanation.
As shown in Figure 1, the electric power supply control system of the field on-Line Monitor Device in the present embodiment comprises: control module MCU; The GPRS module, be connected the control signal of reception control unit MCU with control module MCU by the first mu balanced circuit; Be equipped with one second mu balanced circuit in the load ，Ge road load that several are connected in parallel, each second mu balanced circuit connects respectively an isolation supply module, and each is isolated supply module and is connected to control module MCU, the control signal of reception control unit MCU; The load that each road is connected in parallel is connected to an insulating power supply module, and this insulating power supply module is connected with control module MCU, the control signal of reception control unit.In the present embodiment, system power supply voltage is 3.7V, gives the power supply of system master Single Chip Microcomputer (SCM) system after mu balanced circuit, and main control singlechip is controlled respectively power supply and the isolation power supply of GPRS module.
Fig. 2 has shown the power supply circuit of GPRS module under a kind of embodiment in the electric power supply control system of this field on-Line Monitor Device.As shown in Figure 2, the feed circuit of GPRS module are the feed circuit that electricity field is commonly used, it comprises electric capacity E500, E501, E502, E503, C500, C501, resistance R 500, R504, R505, R506, R507, R509, R510 and two voltage stabilizing chip TPS7301QD U500, U501.Wherein, VDDIN is the 3.7V voltage input end; Electric capacity E500, E501 are input filter capacitor, the ripple on the filtering input power; The GPRS supply module comprises control port GPRS PwenEN and resistance R 500; Resistance R 504, R505 and R506, R507 form respectively voltage negative feedback circuit, make the output voltage stabilization of voltage stabilizing chip TPS7301 at 4V; Capacitor C 500, C501, E502, E503 are output filter capacitor, the ripple on the filtering out-put supply; Resistance R 509, R510 are parallel output current equalizing resistance, can regulate according to actual conditions the output current of each road power supply.
Burst current during due to GPRS module transmission data can reach 2A, transmission data average current is 550mA, in order not make the GPRS module when transmitting data, supply voltage is dragged down, therefore adopted in parallel additional and method the United Nations General Assembly's electric capacity of two voltage stabilizing chip TPS7301 to provide instantaneous large-current for the GPRS module in the present embodiment.In the present embodiment, voltage stabilizing chip TPS7301 maximum can provide the output current of 500mA, after two parallel connections, can provide the 1A output current of left and right.Tantalum electrochemical capacitor (being electric capacity E502, E503) at each 470uF in parallel of the output terminal of voltage stabilizing chip TPS7301 provides instantaneous large-current.Cause the power pin of GPRS module with short and thick line when PCB (printed circuit board) connects up, guarantee that so low ESR (Equivalent Series Resistance, equivalent series resistance) connects.Near the electric capacity of 0.1uF in parallel and the 10nF GPRS power pin, absorb the spike on power lead simultaneously.
Insulating power supply module in the technical program, for generation of insulating power supply, prevents that external disturbance is coupled on the built-in system power supply by electric power loop.This insulating power supply module comprises input Voltage stabilizing module and high-frequency drive module 1 as shown in Figure 4, transformer rectification module 2 and filtration module 3 as shown in Figure 3, and above-mentioned input Voltage stabilizing module, high-frequency drive module 1, transformer rectification module 2 and filtration module 3 are connected successively.
As shown in Figure 3, the feed circuit of its circuit structure and above-mentioned GPRS module are basic identical for the circuit diagram of the input Voltage stabilizing module in the present embodiment, are also the common circuit structure in this area, therefore do not repeat them here.
As shown in Figure 4, high-frequency drive module 1 comprises that two drive chip MAX253ESA U702 and U703, diode D700, D701, D702, D703, D704, electric capacity E702, E703, C700, C701, resistance R 701, R702, R703, R704, R705, triode Q700.Wherein, drive the positive pole of the 1 pin connection diode D701 of chip MAX253ESAU702, the negative pole of diode D701 connects 6 pin that drive chip MAX253ESA U702, drive the positive pole of the 8 pin connection diode D700 of chip MAX253ESA U702, the negative pole of diode D700 connects 6 pin that drive chip MAX253ESA U702; Drive the positive pole of the 1 pin connection diode D703 of chip MAX253ESA U703, the negative pole of diode D703 connects 6 pin that drive chip MAX253ESA U703, drive the positive pole of the 8 pin connection diode D702 of chip MAX253ESA U703, the negative pole of diode D702 connects 6 pin that drive chip MAX253ESA U703; Electric capacity E702 is connected in parallel and is connected with 7 pin with 6 pin that drive chip MAX253ESA U702 afterwards with capacitor C 700; Electric capacity E703 is connected in parallel and with second, drives 6 pin of chip MAX253ESAU703 to be connected with 7 pin afterwards with capacitor C 701; After resistance R 701 and resistance R 702 are connected in parallel, an end is connected with 3,4 pin that drive chip MAX253ESA U702, and the other end is connected with 2 pin, 7 pin of driving chip MAX253ESA U702; Resistance R 703 is connected in series a rear end with resistance R 704 and is connected with the collector of triode Q700 with 3,4 pin that drive chip MAX253ESAU703, the other end is connected to the port of control module, the base stage of triode Q700 is the negative pole of contact resistance R705, diode D704 and the port of control module successively, forms the working control circuit that drives chip MAX253ESA U703.
Please continue to consult Fig. 4, diode D700, D701, D702, D703 are unidirectional feed circuit, when driving the 1 pin output driving pulse of chip MAX253ESA for two, by diode D703 and D701, for 6 pin that drive chip MAX253ESA, power respectively, when driving the 8 pin output driving pulse of chip MAX253ESA for two, the 6 pin power supplies that are driving chip MAX253ESA by diode D702 and D700 respectively.Electric capacity E702, E703, C700, C701 are input filter capacitor, in order to the ripple on the filtering input power.Resistance R 702, R701 are pull down resistor, control the duty that drives chip MAX253ESA U702.Resistance R 703, R704, R705, triode Q700, diode D704 and control end ANA_PwrEN, VDDIN form the working control circuit that drives chip MAX253ESAU703 jointly, when ANA_PwrEN is high level, triode Q700 conducting, making to drive 3 pin, 4 pin of chip MAX253ES U703 is low level, now drive chip MAX253ES U703 to start working, when ANA_PwrEN is low level, drive chip MAX253ES U703 to enter dormant state.
As shown in Figure 4, transformer rectification module 2 comprises electrochemical capacitor E704, E705, transformer L700, L701, diode D705, D706, D707 and D708.Wherein, the main coil of transformer L700 is connected to 1 pin and 8 pin that drive chip MAX253ESA U702, and two ends of secondary coil connect respectively the positive pole of diode D705 and diode D706, and the negative pole of diode D705 and diode D706 interconnects; Electric capacity E704 is connected with the neutral point of transformer L700, and stabilized voltage supply is provided; The main coil of transformer L701 is connected to 1 pin and 8 pin that drive chip MAX253ESA U703, and two ends of secondary coil connect respectively the positive pole of diode D707 and diode D708, and the negative pole of diode D707 and diode D708 interconnects; Electric capacity E705 is connected with the neutral point of transformer L701, and stabilized voltage supply is provided; The positive pole of electric capacity E704 and electric capacity E705 interconnects.
Please continue to consult Fig. 4, the neutral point that in Fig. 4, electrochemical capacitor E704, E705 are respectively two transformer L700, L701 provides burning voltage, and two transformer L700, L701 are isolating transformer.Drive the 1 pin output high level of chip MAX253ESA U702 in the high-frequency drive module, simultaneously during 8 pin output low level, electric current flows into by positive pole and the transformer L700 of electrochemical capacitor E704 8 pin that drive chip MAX253ESA U702, Zhongdao ground, now the secondary coil electric current of transformer L700, through diode D706 output, then flows back to through load.Drive the 8 pin output high level of chip MAX253ESAU702 in the high-frequency drive module, simultaneously during 1 pin output low level, electric current flows into by positive pole and the transformer L700 of electrochemical capacitor E704 1 pin that drives chip MAX253ESA U702, Zhongdao ground, now the secondary coil electric current of transformer L700, through diode D705 output, then flows back to through load.When 1 pin that drives chip MAX253ESA U702 and 8 pin are alternately exported positive negative level, the DC voltage after the transformer rectification module will there will be a rectification.
As shown in Figure 4, filtration module 3 comprises electrochemical capacitor E708, E709, E710, E712, C704, C705, resistance R 712, R713, common mode inductance L702 and transient state killer tube D709.The principle of the capacitor and inductor filtering of this filtration module is general principle, is that those skilled in the art are known, therefore be not described in detail in this.
Isolation supply module in the present embodiment comprises voltage stabilizing chip circuit and photoelectric coupled circuit.
Fig. 5 has shown the voltage stabilizing chip circuit in the present embodiment.As shown in Figure 5, the voltage stabilizing chip circuit comprises voltage stabilizing chip LM2931ACD U714, resistance R 714, R716, R717, electric capacity E711, C706, E713.This voltage stabilizing chip circuit is the mu balanced circuit commonly used in this area, therefore its principle of work no longer describes in detail herein.
Fig. 6 has shown the photoelectric coupled circuit in the present embodiment.As shown in Figure 6, photoelectric coupled circuit comprises digital optocoupler TLP181-GB U705, resistance R 715, wire jumper J700JUMP2.Wherein 1 pin of digital optocoupler TLP181-GB U705 is connected with an end of resistance R 715, the other end of resistance R 715 is connected with control module MCU, and be connected with the end of wire jumper J700JUMP2, the other end of wire jumper J700JUMP2 is connected with power end+3V3D, 2 pin and the 3 pin ground connection of numeral optocoupler TLP181-GB U705,4 pin of digital optocoupler TLP181-GB U705 are connected between the resistance R 714 and voltage stabilizing chip LM2931ACD U714 of voltage stabilizing chip circuit.
Please continue to consult Fig. 6, numeral optocoupler TLP181-GB U705, resistance R 715 and control end SNR_PwrEN, power end+3V3D, output terminal Pwr_nEN, form isolation power supply working control circuit, when control end SNR_PwrEN is high level, numeral optocoupler TLP181-GB U705 conducting, now output terminal Pwr_nEN is low level, voltage stabilizing chip LM2931ACD U714 normal operation; When control end SNR_PwrEN is low level, digital optocoupler TLP181-GB U705 cut-off, now output terminal Pwr_nEN is high level, voltage stabilizing chip LM2931ACD U714 dormancy.
Be noted that above enumerate only for specific embodiments of the invention, obviously the invention is not restricted to above embodiment, many similar variations are arranged thereupon.If all distortion that those skilled in the art directly derives or associates from content disclosed by the invention, all should belong to protection scope of the present invention.
Claims (1)
1. the electric power supply control system of a field on-Line Monitor Device, is characterized in that, comprising:
One control module,
One GPRS module, be connected the control signal of reception control unit with control module by one first mu balanced circuit;
Be equipped with one second mu balanced circuit in some load ，Ge road loads that are connected in parallel, each second mu balanced circuit connects respectively an isolation supply module, and each is isolated supply module and is connected to control module, the control signal of reception control unit; The load that each road is connected in parallel is connected to an insulating power supply module, and this insulating power supply module is connected with control module, the control signal of reception control unit; Described insulating power supply module comprises the input Voltage stabilizing module connected successively, high-frequency drive module, transformer rectification module and filtration module; Wherein
Described high-frequency drive module comprises:
One first drives chip MAX253ESA (U702) and one second to drive chip MAX253ESA (U703), 1 pin of the first driving chip (U702) connects the positive pole of the first diode (D701), the negative pole of the first diode (D701) connects 6 pin of the first driving chip (U702), first drives the positive pole of 8 pin connection one second diodes (D700) of chip (U702), and the negative pole of the second diode (D700) connects 6 pin of the first driving chip (U702); Second drives the positive pole of 1 pin connection one the 3rd diode (D703) of chip (U703), the negative pole of the 3rd diode (D703) connects 6 pin of the second driving chip (U703), second drives the positive pole of 8 pin connection one the 4th diodes (D702) of chip (U703), and the negative pole of the 4th diode (D702) connects 6 pin of the second driving chip (U703);
One first electric capacity (E702) and one second electric capacity (C700), they drive 6 pin of chip (U702) to be connected with 7 pin with first after being connected in parallel;
One the 3rd electric capacity (E703) and one the 4th electric capacity (C701), they drive 6 pin of chip (U703) to be connected with 7 pin with second after being connected in parallel;
One first resistance (R701) and one second resistance (R702), they be connected in parallel after an end and first drive 3,4 pin of chip (U702) to be connected, 2 pin, 7 pin of the other end and the first driving chip (U702) are connected;
One the 3rd resistance (R703) and one the 4th resistance (R704), they are connected in series a rear end and second and drive 3,4 pin of chip (U703) to be connected with the collector of a triode (Q700), the other end is connected to the port of control module, the base stage of described triode (Q700) connects the port of one the 5th resistance (R705), one the 5th diode (D704) and control module successively, forms the working control circuit of the second driving chip (U703);
Described isolation supply module comprises:
One voltage stabilizing chip circuit, it comprises a voltage stabilizing chip (U714);
One photoelectric coupled circuit, described photoelectric coupled circuit comprises: an optocoupler TLP181-GB (U705), its 1 pin is connected with an end of one the 6th resistance (R715), the other end of the 6th resistance (R715) is connected with described control module, and be connected with a wire jumper (JUMP2), 2 pin of described optocoupler (U705) and 3 pin ground connection, 4 pin of described optocoupler (U705) are connected with described voltage stabilizing chip circuit.
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| CN2011104241075A CN102520626B (en) | 2011-12-16 | 2011-12-16 | Power supply control system of field on-line monitoring device |
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| CN2011104241075A CN102520626B (en) | 2011-12-16 | 2011-12-16 | Power supply control system of field on-line monitoring device |
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| CN105933426A (en) * | 2016-05-20 | 2016-09-07 | 上海交通大学 | Farmland environment monitoring system and method based on solar power generation |
| CN108693947B (en) * | 2018-05-21 | 2021-04-06 | 安徽集弘物联科技有限公司 | Be used for intelligent power resetting means |
| CN110206408B (en) * | 2019-07-08 | 2023-08-08 | 广东好太太智能家居有限公司 | Intelligent door lock with stable electric control system |
| CN112068209B (en) * | 2020-08-31 | 2023-07-18 | 安徽福淮矿山科技有限公司 | Mine network hybrid electric method monitoring system and method |
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| NZ577490A (en) * | 2006-11-27 | 2011-02-25 | Ember Technologies Pty Ltd | Power supply control device |
| JP5068186B2 (en) * | 2008-01-11 | 2012-11-07 | 富士通コンポーネント株式会社 | Power supply control device and program |
| US20100280677A1 (en) * | 2009-05-04 | 2010-11-04 | Budike Jr Lothar E S | Lighting and energy control system and modules |
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| CN101295936A (en) * | 2007-04-27 | 2008-10-29 | 北京合康亿盛科技有限公司 | Exterior feeding control power supply of high voltage frequency convertor power unit |
| CN201466991U (en) * | 2009-05-15 | 2010-05-12 | 中北大学 | Multi-channel isolation direct-current power generator |
| CN202565165U (en) * | 2011-12-16 | 2012-11-28 | 山东电力集团公司菏泽供电公司 | Power supply control system of on-line field monitoring device |
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