CN105785960A - Energy control system of weak current measurement system in extra high voltage environment - Google Patents
Energy control system of weak current measurement system in extra high voltage environment Download PDFInfo
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- CN105785960A CN105785960A CN201610325889.XA CN201610325889A CN105785960A CN 105785960 A CN105785960 A CN 105785960A CN 201610325889 A CN201610325889 A CN 201610325889A CN 105785960 A CN105785960 A CN 105785960A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM]
- G05B19/41835—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS], computer integrated manufacturing [CIM] characterised by programme execution
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/26—Pc applications
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Abstract
The invention discloses an energy control system of a weak current measurement system in an extra high voltage environment. The system comprises a control module, a power supply module, an operation protection module, a high temperature pre-warning module and a short circuit protection module. the power supply module is used for providing multiple driving voltages and realizing low voltage pre-warning; the operation protection module is used for forming reaction time difference for impact current; the high temperature pre-warning module is used for performing real-time monitoring and pre-warning to internal temperature; the control module is used for isolating the weak current measurement system from a test electric transmission line. By means of the technical scheme of the invention, electric energy management can be effectively realized; the power utilization security weak current measurement system modules is guaranteed; for impact current, device internal high temperature and system isolation under extra high voltage environment, the system provides comprehensive and systematical counter measures against disturbing influence.
Description
Technical field
The invention belongs to extra-high voltage field, particularly relate to the energy control system of weak electric measuring system in a kind of super extra-high voltage environment.
Background technology
In order to ensure that measurement data is accurate, equipment normal table works, and common measurement system all can add some jamproof means when design, as in order to resist electromagnetic interference addition electromagnetic shielding shell, introduced the conventional meanses such as signal conditioning circuit.In patent application " there is the signal regulating panel of electro-magnetic screen function ", a kind of signal regulating panel with electromagnetic shielding for the design of underwater sailing body homing system corollary equipment, its mentality of designing is mainly started with from two aspects: first, and internal circuit is wrapped up by design shield shell；Second design special circuit plate, including signal attenuation, filtering, isolation, level conversion and power conversion unit circuit, each unit circuit adopts modularized design, and adopts high low signal to separate, the custom circuit Electro Magnetic Compatibility processing mode such as transformer isolation and power filter.
But the reply of these conventional meanses is still slightly inadequate due to the situation that in super extra-high voltage environment, electric pressure is high, interference is complicated, it is impossible to tackle the special disturbance regime under super extra-high voltage environment.Work weakness in such circumstances measures the power control circuit place of system except being subject to the factors such as common electromagnetic interference, also easily it is subject to sudden big current interference, various special circumstances and cause its disabler, as when high tension generator voltage understands blood pressure lowering ground connection when being down to about 50kV in actual applications, now owing to circuit also having a large amount of residual charge, by causing, circuit there will be very big dash current, if measurement system is not added with any safeguard procedures, its measurement apparatus and energy control system easily receive the impact of big pulse current, cause device damage, measure the serious consequences such as system module is punctured.
Additionally, the weak electric measuring system under super extra-high voltage environment adopts high-speed high-performance capture card, photoelectric conversion device etc. to reduce environmental disturbances, these equipment electricity consumption situations are different, it is necessary to provide different power voltage in light of the circumstances.And easily occurring heating problem when high speed acquisition is stuck in high speed operation, add that weak electric measuring equipment is in electromagnetic shielding body, be in outdoor solar light direct projection state daytime, internal temperature is easily too high, affects equipment safety；Weak electric measuring system under super extra-high voltage environment adopts tradition lithium battery power supply mode, and continuous working period is limited, and Renewal process is comparatively difficult；After light current tests system stalls, the electric current on test wire is still had to enter in test system.There is presently no and provide complete set, system, comprehensively and the control system of high reliability and high continuation of the journey design for the weak electric measuring system worked under above-mentioned super extra-high voltage environment.
Summary of the invention
For the deficiencies in the prior art; the present invention provides the energy control system of weak electric measuring system in a kind of super extra-high voltage environment; achieve the function realizing Power convert, equipment protection, Based Intelligent Control of weak electric measuring system under super extra-high voltage environment; the safe and reliable work of support equipment, improves the working time.
The technical solution adopted in the present invention is as follows:
First aspect, it is provided that the energy control system of weak electric measuring system in a kind of super extra-high voltage environment, it is characterised in that include controlling module, power module, running protection module, high temperature warning module and short circuit protection module；Wherein, described power module connects described control module, running protection module, high temperature warning module and short circuit protection module respectively, is used for providing multiple driving voltage and realizing low-voltage early warning；The two ends of described running protection module connect measurement device and the sensor of described weak electric measuring system respectively, poor for dash current is formed the response time；Described high temperature warning module connects described control module, for internal temperature is monitored and early warning in real time；Described control module connects described short circuit protection module, is used for isolating described weak electric measuring system and test transmission line of electricity.
In conjunction with first aspect, in the embodiment that the first is possible, described control module includes microprocessor, power down preventing circuit, electrical level transferring chip, at least one silicon gate CMOS device, darlington transistor array and at least two group relay control circuits；Wherein, the outfan of described microprocessor connects described silicon gate CMOS device respectively, and the outfan of described silicon gate CMOS device connects described darlington transistor array respectively, and the outfan of described darlington transistor array connects described control relay circuit.
In conjunction with the embodiment that the first is possible, in the embodiment that the second is possible, described control module passes through systemic presupposition or user-defined acquisition interval, controls the capture card in described weak electric measuring system and USB extender cuts out and opens.
In conjunction with the embodiment that the second is possible, in the embodiment that the third is possible, described power module includes at least three group decompression voltage regulators and least one set voltage reversing circuit；Wherein, described decompression voltage regulator provides 5V, 6V and 5V5A three kinds of burning voltages respectively, and described voltage reversing circuit includes controllable accurate source of stable pressure and voltage comparator, and the outfan of described controllable accurate source of stable pressure accesses the input of described voltage comparator.
In conjunction with the embodiment that the third is possible, in the 4th kind of possible embodiment, the 5V burning voltage of described decompression voltage regulator, provide power supply for described weak electric measuring internal system photoelectric conversion module；The 6V burning voltage of described decompression voltage regulator, the capture card for described weak electric measuring internal system provides power supply；The 5V5A burning voltage of described decompression voltage regulator, the USB extender for described weak electric measuring internal system provides power supply.
In conjunction with the 4th kind of possible embodiment, in the 5th kind of possible embodiment, the input of described voltage comparator is also associated with voltage collection circuit, and described voltage collection circuit includes lithium battery and slide rheostat.
In conjunction with any one possible embodiment of first aspect to the 5th kind, in the 6th kind of possible embodiment, described running protection circuit includes the Transient Suppression Diode and the gas-discharge tube that are arranged in parallel；Wherein, the described sensor signal outfan of described weak electric measuring system connects described running protection circuit, and the described measurement device input of described weak electric measuring system connects described running protection circuit.
In conjunction with the 6th kind of possible embodiment, in the 7th kind of possible embodiment, described high temperature warning module includes temperature sensor；Wherein, described temperature sensor is connected with described microprocessor, and described microprocessor judges whether to start according to the temperature data that described temperature sensor gathers reports to the police and closes described weak electric measuring system.
In conjunction with the 7th kind of possible embodiment, in the 8th kind of possible embodiment, described short circuit protection module includes least one set relay and at least two group Phototube Coupling pipes；Wherein, the outfan of described at least two group Phototube Coupling pipes connects the input of described least one set relay respectively, and the input of described at least two group Phototube Coupling pipes connects the outfan of described darlington transistor array respectively.
In conjunction with the 8th kind of possible embodiment, in the 9th kind of possible embodiment, after receiving the out code that host computer sends, described short circuit protection module cuts off described weak electric measuring system and transmission line of electricity；After receiving the open command that host computer sends, described short circuit protection module connects described weak electric measuring system and transmission line of electricity.
Compared with prior art, system provided by the present invention, reach following technique effect:
1, by arranging power module, it is possible to effectively realize electric energy management, provide different driving voltages for the distinct device in weak electric measuring system, it is ensured that the electrical safety of each equipment of weak electric measuring system, strengthen the reliability of system.
2, by arranging running protection module, it is possible to when producing very big dash current on the line, the serious consequence such as protection weak electric measuring equipment prevents from being punctured, device damage.
3, by arranging high temperature warning module, it is possible to when weak electric measuring internal system temperature is too high, send fault alarm instruction, and be automatically switched off weak electric measuring system, it is ensured that the safety that system is run.
4, by arranging short circuit protection module, it is possible to the electric current retained on test wire after weak electric measuring system stalls and weak electric measuring isolation of system, it is ensured that security of system does not affect the carrying out of other measurements simultaneously.
5, by controlling the opening and closing of module control relay circuit, it is achieved the opening and closing of capture card and USB extended line, it is possible to achieve the saving of electric energy, improve the power consumption efficiency of system, remove the regular trouble changing lithium battery from.
Accompanying drawing explanation
Fig. 1 is the control system global structure schematic diagram of the embodiment of the present invention；
Fig. 2 is the control module circuit diagram of the embodiment of the present invention；
Fig. 3 is three groups of decompression voltage regulator figure of the embodiment of the present invention；
Fig. 4 is the voltage reversing circuit figure of the embodiment of the present invention；
Fig. 5 is the running protection module circuit diagram of the embodiment of the present invention；
Fig. 6 is the high temperature warning module structure chart of the embodiment of the present invention；
Fig. 7 is the running protection module circuit diagram of the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, but not as a limitation of the invention.
As it is shown in figure 1, embodiments provide the energy control system of weak electric measuring system in a kind of super extra-high voltage environment, including controlling module, power module, running protection module, high temperature warning module and short circuit protection module；Wherein, power module is link control module, running protection module, high temperature warning module and short circuit protection module respectively, is used for providing multiple driving voltage；Running protection module connects power module, poor for dash current is formed the response time；High temperature warning module link control module, for monitoring in real time and early warning internal temperature；Control module and connect short circuit protection module, be used for isolating weak electric measuring system and test transmission line of electricity.
As in figure 2 it is shown, wherein, control module and be responsible for described energy control system and host computer interactive communication, data process and other module controlling energy control system.Concrete, described control module includes microprocessor, power down preventing circuit, electrical level transferring chip, at least one silicon gate CMOS device, darlington transistor array and at least two group relay control circuits.Microprocessor is AT89C4051-24PU microprocessor, power down preventing circuit is made up of MAX813 cake core, electrical level transferring chip is MAX2321 type single supply electrical level transferring chip, silicon gate CMOS device is six 74HC04 types silicon gate CMOS devices at a high speed, the model of darlington transistor array is MC1413B type, and two group relaies are DS2E-SL2 type relay (RELAY1 and RELAY2).
P1.2, P1.3, P1.4, P1.5, P1.6, P1.7 outfan of microprocessor connects silicon gate CMOS device respectively, the output of silicon gate CMOS device is respectively connected to IN1, IN2, IN3, IN4, IN5, IN6 of darlington transistor array, output OUT1, OUT3 of darlington transistor array are respectively connected to the SET-mouth of relay R ELAY1, RELAY2, the RESET-mouth of relay R ELAY1 and the RESET-mouth of RELAY2, relay R ELAY1, RELAY2 the input port of SET+ and RESET+ connect 12V voltage, RST1, RST2 mouth is without input.RXD, TXD mouth of microprocessor is connected with R1OUT, T1IN mouth of single supply electrical level transferring chip.
Wherein, controlling inside modules control program can according to the break-make of the working state control relay R ELAY1 of current weak electric measuring system, RELAY2, then realize the break-make of 6V, 5V5A power supply, control the capture card in weak electric measuring system and USB extender cuts out and opens.Although prior art has a lot of control circuit controlling on/off, but it solves the technical problem that the opening and closing of only power supply, the work realizing system starts and stops, the control of locally supplied power source cannot be realized in system work process, effectively realize the management of electric energy and the control to equipment component.And, the power supply mode of weak electric measuring system is to be provided by lithium battery, and the Renewal process of which is complex, the mode needing artificial climbing tower completes, and replacement cost is high, in order to extend the use time of lithium battery, realize effective management of electric energy, design following control model.Weak electric measuring system uses interval to gather when gathering signal data, namely user sets acquisition interval (30S～60S) and carries out the collection of a 15S, tradition power supply mode can the whole cycle all in power supply state, high-speed collection card, USB extender are in stand-by operation state, the energy wastes, and energy control system can according to the acquisition interval of user setup, the generation of 6V and 5V5A power supply is turned off by relay at interval stage, thus turning off high-speed collection card USB extender equipment, energy efficient.Wherein, 15S sets according to user, it is also possible to for 20S, concrete interval time is not specifically limited.Acquisition interval can also be systemic presupposition or the running environment according to equipment automatically generates.
As it is shown on figure 3, power module includes at least three group decompression voltage regulators and least one set voltage reversing circuit.Wherein, decompression voltage regulator provides 5V, 6V and 5V5A three kinds of burning voltages respectively.Concrete, the decompression voltage regulator that first group of mu balanced circuit uses LM2575S-5 voltage stabilizing chip to constitute, the photovoltaic conversion provided by lithium battery in energy control system is 5V burning voltage, for other relevant devices of weak electric measuring internal system photoelectric conversion module and energy control system；Second group of decompression voltage regulator uses LM2678-ADJ voltage stabilizing chip to coordinate the decompression voltage regulator that slide rheostat is constituted, the photovoltaic conversion provided by lithium battery in energy control system is 6V burning voltage, for weak electric measuring internal system capture card, wherein the INPUT end of voltage stabilizing chip is connected with the RELAY1 relay COM1 end controlling module, supply voltage is connected with RELAY1 relay SET1 end, it is achieved controlled operation by controlling module；The decompression voltage regulator that 3rd group of decompression voltage regulator uses LM2678-5 voltage stabilizing chip to constitute, it is the output of 5V5A burning voltage by the photovoltaic conversion that the lithium battery in energy control system provides, for weak electric measuring internal system USB extender, the INPUT end of wherein said voltage stabilizing chip is connected with the RELA2 relay COM1 end of described control module, supply voltage is connected with RELAY2 relay SET1 end, it is achieved controlled operation by controlling module.
Although the power module provided in prior art can provide different voltage, but relatively single in the type of output voltage, it is impossible to meet power demands and the work requirements of distinct device in weak electric measuring system；Secondly, in extra-high voltage and ultra-high voltage environment, the stability requirement of voltage is high, the voltage stability that power module of the prior art provides is poor, is unfavorable for the properly functioning of equipment.By voltage stabilizing reduction voltage circuit three groups different, it is possible to provide different driving voltages for the distinct device in weak electric measuring system, distinct device keeps good working order, effectively realizes the management to electric energy, it is ensured that the electrical safety of each equipment.
As shown in Figure 4, voltage reversing circuit includes TL431 controllable accurate source of stable pressure and LM311N voltage comparator, and lithium battery accesses the TL431 mu balanced circuit being main and exports 2.5V standard stabiliser voltage, it is possible to achieve the monitoring to cell voltage.The circuit output end of pressure-stabilizing that TL431 is main accesses No. 3 pin inputs of LM311N voltage comparator, No. 2 pin inputs of voltage comparator access the voltage collection circuit that lithium battery is constituted with slide rheostat circuit, coordinate the adjustment of slide rheostat to arrange different voltage warning values.
Voltage reversing circuit can regulate the position of slide rheostat as required; thus arranging different voltage warning values; realize supplying cell brownout early warning; protection cell safety, running protection circuit is protected to run under weak electric measuring system extra-high voltage direct-current environment according to this warning value not to be affected by pulse shock electric current.
As it is shown in figure 5, running protection circuit includes the Transient Suppression Diode and the gas-discharge tube that are arranged in parallel；Wherein, the sensor signal outfan of weak electric measuring system connects running protection circuit, and the measurement device input of weak electric measuring system connects running protection circuit.Concrete, set up two-stage safeguard procedures between measurement device and the sensor in weak electric measuring system, first order protection is made up of Transient Suppression Diode TVS3；Second level protection is made up of gas-discharge tube Gas1.From protection circuit characteristic, the TVS3 tube reaction time is ns rank, and gas-discharge tube Gas1 is μ s level.Therefore, can effectively protect the equipment in energy control system to exempt from by the difference in its response time to puncture.
When the high tension generator of extra-high voltage direct-current test line segment carries out blood pressure lowering ground connection, circuit also has a large amount of residual charge, by causing, circuit there will be very big dash current.By arranging running protection circuit, it is possible to protect weak electric measuring System on Chip/SoC and equipment from puncturing by the difference in response time.
As shown in Figure 6, high temperature warning module includes temperature sensor；Wherein, temperature sensor is connected with microprocessor, and microprocessor judges whether to start according to the temperature data of temperature sensor collection reports to the police and closes weak electric measuring system.Concrete, first pass through DALLAS18B20 temperature sensor and gather the internal temperature of weak electric measuring system, P3.3 mouth by incoming for data microprocessor, again the high temperature threshold value in the microprocessor of the temperature collected and energy control system is compared, if exceeding setting value at latching and to carry out fault alarm.
By arranging high temperature warning module, real time record can measure internal system temperature regime and judge weak electric measuring system is protected by high/low temperature on the one hand, improving device security；Basis for estimation can be increased when breaking down on the other hand for weak electric measuring system.
As it is shown in fig. 7, short circuit protection module includes least one set relay and at least two group Phototube Coupling pipes；Wherein, the outfan of at least two group Phototube Coupling pipes is respectively connecting to the input of a few group relay, and the input of at least two group Phototube Coupling pipes connects the outfan of darlington transistor array respectively.
Concrete, the delivery outlet controlling OUT5, OUT6 of the MC1413B type darlington transistor array of module is respectively connected to No. 2 mouths of two Phototube Coupling pipe OPTOISO1, No. 1 mouth connects+12V voltage, No. 3 mouth ground connection of the output of two Phototube Coupling pipe OPTOISO1, the input port of SET-and the RESET-of No. 4 mouth access DS2E-SL2 type relays.SET1, SET2 of relay R ELAY3 accesses the signal that sensor acquisition is come.When host computer send out transmission line of electricity go out to close weak electric measuring system command time, short circuit protection module will separate weak electric measuring system with transmission line of electricity, and the electric current ensured on circuit will not enter weak electric measuring system；When host computer sends open command time, short circuit protection module will be connected weak electric measuring system with transmission line of electricity, starts and measures work.
By arranging Phototube Coupling pipe OPTOISO1, it is possible to avoid short circuit protection module to directly contact collection signal, it is prevented that interference data.The setting of short circuit protection module makes measurement system separate with test transmission line of electricity, it is ensured that equipment safety, does not also delay other tests of test circuit and carries out.
Embodiments provide the energy control system of weak electric measuring system in a kind of super extra-high voltage environment, enable to weak electric measuring security of system and realize corresponding function reliably, it is made to tackle the impact of dash current, high temperature in super extra-high voltage environment, realize described measurement device and the isolation of extra-high voltage experiment circuit, the continuous working period of the effective described weak electric measuring system improved, overall weak electric measuring system reliability is substantially improved, and saves experimental cost.
Described above illustrate and describes some preferred embodiments of the present invention, but as previously mentioned, it is to be understood that the present invention is not limited to form disclosed herein, it is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and in invention contemplated scope described herein, can be modified by the technology of above-mentioned instruction or association area or knowledge.And the change that those skilled in the art carry out and change are without departing from the spirit and scope of the present invention, then all should in the protection domain of claims of the present invention.
Claims (10)
1. the energy control system of weak electric measuring system in a super extra-high voltage environment, it is characterised in that include controlling module, power module, running protection module, high temperature warning module and short circuit protection module；Wherein, described power module connects described control module, running protection module, high temperature warning module and short circuit protection module respectively, is used for providing multiple driving voltage and realizing low-voltage early warning；The two ends of described running protection module connect measurement device and the sensor of described weak electric measuring system respectively, poor for dash current is formed the response time；Described high temperature warning module connects described control module, for internal temperature is monitored and early warning in real time；Described control module connects described short circuit protection module, is used for isolating described weak electric measuring system and test transmission line of electricity.
2. energy control system according to claim 1, it is characterised in that described control module includes microprocessor, power down preventing circuit, electrical level transferring chip, at least one silicon gate CMOS device, darlington transistor array and at least two group relay control circuits；Wherein, the outfan of described microprocessor connects described silicon gate CMOS device respectively, and the outfan of described silicon gate CMOS device connects described darlington transistor array respectively, and the outfan of described darlington transistor array connects described control relay circuit.
3. energy control system according to claim 2, it is characterised in that described control module passes through systemic presupposition or user-defined acquisition interval, controls the capture card in described weak electric measuring system and USB extender cuts out and opens.
4. energy control system according to claim 3, it is characterised in that described power module includes at least three group decompression voltage regulators and least one set voltage reversing circuit；Wherein, described decompression voltage regulator provides 5V, 6V and 5V5A three kinds of burning voltages respectively, and described voltage reversing circuit includes controllable accurate source of stable pressure and voltage comparator, and the outfan of described controllable accurate source of stable pressure accesses the input of described voltage comparator.
5. energy control system according to claim 4, it is characterised in that the 5V burning voltage of described decompression voltage regulator, provides power supply for described weak electric measuring internal system photoelectric conversion module；The 6V burning voltage of described decompression voltage regulator, the capture card for described weak electric measuring internal system provides power supply；The 5V5A burning voltage of described decompression voltage regulator, the USB extender for described weak electric measuring internal system provides power supply.
6. energy control system according to claim 5, it is characterised in that the input of described voltage comparator is also associated with voltage collection circuit, and described voltage collection circuit includes lithium battery and slide rheostat.
7. the energy control system according to claim 1-6 any one, it is characterised in that described running protection circuit includes the Transient Suppression Diode and the gas-discharge tube that are arranged in parallel；Wherein, the described sensor signal outfan of described weak electric measuring system connects described running protection circuit, and the described measurement device input of described weak electric measuring system connects described running protection circuit.
8. energy control system according to claim 7, it is characterised in that described high temperature warning module includes temperature sensor；Wherein, described temperature sensor is connected with described microprocessor, and described microprocessor judges whether to start according to the temperature data that described temperature sensor gathers reports to the police and whether closes described weak electric measuring system.
9. energy control system according to claim 8, it is characterised in that described short circuit protection module includes least one set relay and at least two group Phototube Coupling pipes；Wherein, the outfan of described at least two group Phototube Coupling pipes connects the input of described least one set relay respectively, and the input of described at least two group Phototube Coupling pipes connects the outfan of described darlington transistor array respectively.
10. energy control system according to claim 9, it is characterised in that after receiving the out code that host computer sends, described short circuit protection module cuts off described weak electric measuring system and transmission line of electricity；After receiving the open command that host computer sends, described short circuit protection module connects described weak electric measuring system and transmission line of electricity.
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