CN105716657A - Automatic monitoring device of current transformer - Google Patents
Automatic monitoring device of current transformer Download PDFInfo
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- CN105716657A CN105716657A CN201610115128.1A CN201610115128A CN105716657A CN 105716657 A CN105716657 A CN 105716657A CN 201610115128 A CN201610115128 A CN 201610115128A CN 105716657 A CN105716657 A CN 105716657A
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- sulfur dioxide
- air conditioning
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention relates to an automatic monitoring device of a current transformer. The current transformer comprises an inflatable current transformer main body, an excitation monitor and an ARM11 processing chip. The excitation monitor is used for the inflatable current transformer main body to carry out excitation so as to obtain feedback excitation data. The ARM11 processing chip is connected with the excitation monitor and is used for determining the defect type of the transformer based on the excitation monitor. According to the invention, the lossless self monitoring of the current transformer is realized.
Description
The divisional application of patent that the present invention is application number is 2015107887966, the applying date is on November 16th, 2015, denomination of invention is " automated watch-keeping facility of current transformer ".
Technical field
The present invention relates to power domain, particularly relate to the automated watch-keeping facility of a kind of current transformer.
Background technology
Current transformer, its feature utilizing transformer primary, secondary current proportional is made.Its operation principle, equivalent circuit are also identical with general transformator, and simply its primary side winding is connected in circuit-under-test, and the number of turn is little；Vice-side winding connects the low-impedance load such as ammeter, relay current coil, near short circuit.Primary current (i.e. tested electric current) and secondary current depend on the load of test line, and unrelated with the secondary load of current transformer.Owing to secondary is close to short circuit, so former and deputy polygonal voltage U1 and all only small, exciting current I0 is also only small.When current transformer runs, secondary does not allow open circuit.Because once open circuit, primary current all becomes exciting current, make magnetic flux and secondary voltage substantially exceed normal value and jeopardize the person and equipment safety.Therefore, current transformer secondary loop mustn't connect fuse, also just pull down the equipment such as ammeter, relay not in when running without bypass.The mode of connection of current transformer is determined by the service requirement of its connect load.The most frequently used mode of connection is single-phase, three-phase star and incomplete star.
Gas-filled type current transformer is a kind of main Types in current transformer.In prior art, gas-filled type current transformer is in operation and would be likely to occur certain link pressure anomaly, charge air conditioning purity is out-of-limit, content of sulfur dioxide is out-of-limit, ambient temperature is too high or too low waits dangerous situation, it is all adopt artificial right place Portable device to check to these dangerous situations, waste time and energy and inefficiency, simultaneously, the housing main body of existing gas-filled type current transformer is likely to the various types of defects of appearance when being chronically at external environment, defect type monitoring is completed iff relying on manual inspection, real-time is too poor, and monitoring accuracy is not high yet.
For this, the present invention proposes the automated watch-keeping facility of a kind of current transformer, various running parameter monitoring equipment can be built at current transformer itself and carry out from monitoring, and can incessantly the shell defect type of current transformer be monitored in real time, it is to avoid spreading further of dangerous situation.
Summary of the invention
In order to solve the technical problem that prior art exists, the invention provides the automated watch-keeping facility of a kind of current transformer, it is integrated with excitation monitor and realizes the real-time monitoring of the shell defect type to current transformer, it is integrated with the various running parameters monitoring equipment including Pressure gauge, charge air conditioning infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor the self-operating state of current transformer is monitored, and reported by improved Bluetooth communication equipment, it is thus possible to unusual circumstance in time, and quickly report to the police.
According to an aspect of the present invention, provide the automated watch-keeping facility of a kind of current transformer, described current transformer includes gas-filled type current transformer main body, excitation monitor and ARM11 and processes chip, described excitation monitor for carrying out excitation to obtain the excitation data of feedback to gas-filled type current transformer main body, described ARM11 processes chip and is connected with described excitation monitor, for determining the defect kind of transformer based on described excitation monitor.
More specifically, in the automated watch-keeping facility of described current transformer, including: excitation monitor, gas-filled type current transformer main body is carried out the excitation resistance scaled value to obtain the excitation data of feedback, when obtaining knee voltage, keen current, the described transformer resistance scaled value when 25 degree and described transformer at 75 degree according to excitation data；Gas-filled type current transformer main body, including transformer casing, transformer monitoring mouth, winding, Secondary Winding, iron core, a rosette and the air chamber that insulate, winding, Secondary Winding, iron core, a rosette and the air chamber that insulate are all in described shell, described rosette is for being incorporated into described iron core by a described winding and described Secondary Winding, described insulation air chamber holds described iron core, described transformer monitoring mouth is arranged on the side of transformer casing, as the monitoring port of gas in transformer；Interface conversion threeway, monitors mouth with described transformer and is connected；First hand-operated valve, is connected with described interface conversion threeway；Two-way, is connected with described first hand-operated valve, is also connected with the first switch electromagnetic valve；First switch electromagnetic valve, is connected with pressure maintaining valve；Pressure maintaining valve, is connected with charge air conditioning infrared sensor, and it is also provided with Pressure gauge；Charge air conditioning infrared sensor, measures air chamber with sulfur dioxide and is connected, and is also embedded with sulfur dioxide electrochemical sensor in the gas chamber shell of sulfur dioxide measurement air chamber, and charge air conditioning infrared sensor is for measuring the charge air conditioning purity of gas indoor gas；Sulfur dioxide measures air chamber, including air chamber base, gas chamber shell and sealing ring；Sulfur dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas；4th hand-operated valve, measures air chamber with sulfur dioxide and is connected；Environment temperature sensor, for monitoring the real time temperature of transformer surrounding in real time；Traffic filter, it is connected respectively with Pressure gauge, charge air conditioning infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor, for being filtered respectively the force value of Pressure gauge output, charge air conditioning purity, content of sulfur dioxide and real time temperature processing；Signal amplifier, is connected with traffic filter, for filtered force value, charge air conditioning purity, content of sulfur dioxide and real time temperature are amplified respectively；Analog-digital converter, it is connected with signal amplifier, for the force value after amplifying, charge air conditioning purity, content of sulfur dioxide and real time temperature are carried out analog digital conversion respectively to obtain numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature；TF storage chip, is used for prestoring pressure threshold scope, charge air conditioning purity threshold range, content of sulfur dioxide threshold range and real time temperature threshold range；ARM11 processes chip, is connected with excitation monitor, and resistance scaled value during based on resistance scaled value when 25 degree of knee voltage, keen current, described transformer and described transformer at 75 degree determines the defect kind of transformer；It is connected with analog-digital converter also by input/output interface, to receive numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature, also it is connected with TF storage chip, to send Pressure Alarm when numerical pressure value is beyond pressure threshold scope, charge air conditioning purity alarm signal is sent when digitized charge air conditioning purity is beyond charge air conditioning purity threshold range, content of sulfur dioxide alarm signal is sent when digitized content of sulfur dioxide is beyond content of sulfur dioxide threshold range, ambient temperature alarm signal is sent when digitized real time temperature is beyond real time temperature threshold range；LCDs, process chip with ARM11 to be connected, for showing the defect kind of transformer in real time, real-time displaying digitized force value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature, be additionally operable to the word information warning that display in real time is corresponding respectively with Pressure Alarm, charge air conditioning purity alarm signal, content of sulfur dioxide alarm signal and ambient temperature alarm signal；Audible-visual annunciator, processes chip with ARM11 and is connected, for sending the acousto-optic warning signal corresponding with Pressure Alarm, charge air conditioning purity alarm signal, content of sulfur dioxide alarm signal or ambient temperature alarm signal；Bluetooth communication equipment, the power management server processing chip and far-end with ARM11 is connected, for numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature are sent to power management server place in real time by bluetooth communications link；Wherein, described Bluetooth communication equipment includes the first search subset, the second search subset and coupling connexon equipment；Wherein, the first search subset, determine that micro bluetooth network that Bluetooth MAC address concentration is the highest is as target piconet according to MAC Address concentration in Bluetooth Scatternet, a Bluetooth Scatternet is made up of multiple micro bluetooth networks；Second search subset, searches for subset with described first and is connected, and in described target piconet, finds, quantity preceding by signal intensity ranking and is not more than one or more Bluetooth communication equipments of 7 as one or more target Bluetooth devices；Equipment connexon equipment, searches for subset with described second and is connected, start and be connected with the Bluetooth communication of the one or more target Bluetooth devices.
More specifically, in the automated watch-keeping facility of described current transformer: when having the quantity of Bluetooth communication equipment of signal in described target piconet for during be more than or equal to 7, the quantity of the one or more target Bluetooth devices is 7.
More specifically, in the automated watch-keeping facility of described current transformer: when having the quantity of Bluetooth communication equipment of signal in described target piconet for during less than 7, the quantity of the one or more target Bluetooth devices is the quantity of the Bluetooth communication equipment having signal in described target piconet.
More specifically, in the automated watch-keeping facility of described current transformer: excitation monitor, TF storage chip and ARM11 process chip and are integrated on one piece of surface-mounted integrated circuit.
More specifically, in the automated watch-keeping facility of described current transformer: input/output interface is 8 bit input and output interfaces, and analog-digital converter is 8 analog-digital converters.
Accompanying drawing explanation
Below with reference to accompanying drawing, embodiment of the present invention are described, wherein:
Fig. 1 is the block diagram of the automated watch-keeping facility of the current transformer of the present invention.
Accompanying drawing labelling: 1 gas-filled type current transformer main body；2 excitation monitors；3ARM11 processes chip
Detailed description of the invention
Below with reference to accompanying drawings the embodiment of the automated watch-keeping facility of the current transformer of the present invention is described in detail.
Transformer operation principle is as follows: in the circuit of power consumption, and electric current differs from several peaces to several Wan An, and voltage phase difference is from several volts to millions of volts.In circuit, current/voltage is all higher, is breakneck as directly measured.Need to be converted to, for ease of secondary meter measurement, the current/voltage that comparison is unified, use transformer to play the effect of variable flow and variable pressure and electrical isolation.Display instrument major part is the current voltmeter of pointer-type, so the secondary current great majority of current transformer are ampere level (such as 5 etc.).Along with era development, electrical measurement has reached digitized mostly, and the signal of the sampling of computer is generally milliampere level (0-5V, 4-20mA etc.).Micro-transformer of current secondary current is milliampere level, acts primarily as the function served as bridge between big transformer and sampling.Micro-transformer of current is referred to as " instrument current transformer ".
Self working state monitoring is dependent on artificial mode by current gas-filled type current transformer to be carried out, namely manager arranges attendant to carry various monitoring instrument with regularly pinpointing to go to be monitored, but this monitoring pattern cannot be carried out uninterrupted monitoring, inefficiency, meanwhile, prior art also lacks the monitoring mechanism to gas-filled type current transformer shell defect kind.
For this, the present invention has built the automated watch-keeping facility of a kind of current transformer, transform the structure of existing gas-filled type current transformer, it is integrated with the subset of various running parameter monitoring, more crucially simultaneously, add excitation monitor and gas-filled type current transformer main body is carried out excitation monitoring, and carry out defect type judgement according to excitation monitoring result voluntarily, thus improve reliability and automatization's level of transformer.
Fig. 1 is the block diagram of the automated watch-keeping facility of the current transformer of the present invention, described current transformer includes gas-filled type current transformer main body, excitation monitor and ARM11 and processes chip, described excitation monitor for carrying out excitation to obtain the excitation data of feedback to gas-filled type current transformer main body, described ARM11 processes chip and is connected with described excitation monitor, for determining the defect kind of transformer based on described excitation monitor.
Then, the structure of the automated watch-keeping facility of the current transformer of the present invention is specifically described.
Described current transformer includes: excitation monitor, gas-filled type current transformer main body is carried out the excitation resistance scaled value to obtain the excitation data of feedback, when obtaining knee voltage, keen current, the described transformer resistance scaled value when 25 degree and described transformer at 75 degree according to excitation data.
Described current transformer includes: gas-filled type current transformer main body, including transformer casing, transformer monitoring mouth, winding, Secondary Winding, iron core, a rosette and the air chamber that insulate, winding, Secondary Winding, iron core, a rosette and the air chamber that insulate are all in described shell, described rosette is for being incorporated into described iron core by a described winding and described Secondary Winding, described insulation air chamber holds described iron core, described transformer monitoring mouth is arranged on the side of transformer casing, as the monitoring port of gas in transformer；Interface conversion threeway, monitors mouth with described transformer and is connected；First hand-operated valve, is connected with described interface conversion threeway；Two-way, is connected with described first hand-operated valve, is also connected with the first switch electromagnetic valve；First switch electromagnetic valve, is connected with pressure maintaining valve；Pressure maintaining valve, is connected with charge air conditioning infrared sensor, and it is also provided with Pressure gauge.
Described current transformer includes: charge air conditioning infrared sensor, measure air chamber with sulfur dioxide to be connected, also being embedded with sulfur dioxide electrochemical sensor in the gas chamber shell of sulfur dioxide measurement air chamber, charge air conditioning infrared sensor is for measuring the charge air conditioning purity of gas indoor gas；Sulfur dioxide measures air chamber, including air chamber base, gas chamber shell and sealing ring；Sulfur dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas；4th hand-operated valve, measures air chamber with sulfur dioxide and is connected；Environment temperature sensor, for monitoring the real time temperature of transformer surrounding in real time.
Described current transformer includes: traffic filter, it is connected respectively with Pressure gauge, charge air conditioning infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor, for being filtered respectively the force value of Pressure gauge output, charge air conditioning purity, content of sulfur dioxide and real time temperature processing；Signal amplifier, is connected with traffic filter, for filtered force value, charge air conditioning purity, content of sulfur dioxide and real time temperature are amplified respectively.
Described current transformer includes: analog-digital converter, it is connected with signal amplifier, for the force value after amplifying, charge air conditioning purity, content of sulfur dioxide and real time temperature are carried out analog digital conversion respectively to obtain numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature；TF storage chip, is used for prestoring pressure threshold scope, charge air conditioning purity threshold range, content of sulfur dioxide threshold range and real time temperature threshold range.
Described current transformer includes: ARM11 processes chip, is connected with excitation monitor, and resistance scaled value during based on resistance scaled value when 25 degree of knee voltage, keen current, described transformer and described transformer at 75 degree determines the defect kind of transformer；It is connected with analog-digital converter also by input/output interface, to receive numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature, also it is connected with TF storage chip, to send Pressure Alarm when numerical pressure value is beyond pressure threshold scope, charge air conditioning purity alarm signal is sent when digitized charge air conditioning purity is beyond charge air conditioning purity threshold range, content of sulfur dioxide alarm signal is sent when digitized content of sulfur dioxide is beyond content of sulfur dioxide threshold range, ambient temperature alarm signal is sent when digitized real time temperature is beyond real time temperature threshold range.
Described current transformer includes: LCDs, process chip with ARM11 to be connected, for showing the defect kind of transformer in real time, real-time displaying digitized force value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature, be additionally operable to the word information warning that display in real time is corresponding respectively with Pressure Alarm, charge air conditioning purity alarm signal, content of sulfur dioxide alarm signal and ambient temperature alarm signal；Audible-visual annunciator, processes chip with ARM11 and is connected, for sending the acousto-optic warning signal corresponding with Pressure Alarm, charge air conditioning purity alarm signal, content of sulfur dioxide alarm signal or ambient temperature alarm signal.
Described current transformer includes: Bluetooth communication equipment, the power management server processing chip and far-end with ARM11 is connected, for numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature are sent to power management server place in real time by bluetooth communications link；Wherein, described Bluetooth communication equipment includes the first search subset, the second search subset and coupling connexon equipment；Wherein, the first search subset, determine that micro bluetooth network that Bluetooth MAC address concentration is the highest is as target piconet according to MAC Address concentration in Bluetooth Scatternet, a Bluetooth Scatternet is made up of multiple micro bluetooth networks；Second search subset, searches for subset with described first and is connected, and in described target piconet, finds, quantity preceding by signal intensity ranking and is not more than one or more Bluetooth communication equipments of 7 as one or more target Bluetooth devices；Equipment connexon equipment, searches for subset with described second and is connected, start and be connected with the Bluetooth communication of the one or more target Bluetooth devices.
Alternatively, in described current transformer: when having the quantity of Bluetooth communication equipment of signal in described target piconet for during be more than or equal to 7, the quantity of the one or more target Bluetooth devices is 7；When having the quantity of Bluetooth communication equipment of signal in described target piconet for during less than 7, the quantity of the one or more target Bluetooth devices is the quantity of the Bluetooth communication equipment having signal in described target piconet；Excitation monitor, TF storage chip and ARM11 process chip and can be incorporated on one piece of surface-mounted integrated circuit；Input/output interface is chosen as 8 bit input and output interfaces, and analog-digital converter is chosen as 8 analog-digital converters.
It addition, analog-digital converter and A/D converter, or it is called for short ADC, it is common that refer to that analog-signal transitions is the electronic component of digital signal by one.Common analog-digital converter is the digital signal that an input voltage signal is converted to an output.Owing to digital signal itself does not have practical significance, it is merely representative of a relative size.Therefore any one analog-digital converter is required for one with reference to analog quantity as the standard changed, relatively common reference standard is maximum convertible signal magnitude.The digital quantity exported then represents the input signal size relative to reference signal.
The resolution of analog-digital converter refers to, for the analogue signal in allowed band, it can export the number of discrete digital signal value.These signal values store typically by binary number, and therefore resolution is through commonly using bit as unit, and the number of these centrifugal pumps is the power exponent of 2.Such as, analogue signal can be encoded into 256 different centrifugal pumps (because 2^8=256) by one analog-digital converter with 8 bit resolutions, from 0 to 255 (i.e. signless integers) or from-128 to 127 (i.e. signed integers), any as using, then depend on concrete application.
Adopt the automated watch-keeping facility of the current transformer of the present invention, running parameter and agent structure is lacked from the technical problem of monitoring mechanism for gas-filled type current transformer in prior art, by transforming the structure of existing gas-filled type current transformer, multiple running parameters are monitored integration of equipments to existing gas-filled type current transformer, and increase shell defect inspection equipment, thus replacing loaded down with trivial details and inefficiency personal monitoring's pattern, improve the efficiency of monitoring of equipment.
Although it is understood that the present invention discloses as above with preferred embodiment, but above-described embodiment is not limited to the present invention.For any those of ordinary skill in the art, without departing under technical solution of the present invention ambit, all may utilize the technology contents of the disclosure above and technical solution of the present invention is made many possible variations and modification, or be revised as the Equivalent embodiments of equivalent variations.Therefore, every content without departing from technical solution of the present invention, the technical spirit of the foundation present invention, to any simple modification made for any of the above embodiments, equivalent variations and modification, all still falls within the scope of technical solution of the present invention protection.
Claims (2)
1. the automated watch-keeping facility of a current transformer, described current transformer includes gas-filled type current transformer main body, excitation monitor and ARM11 and processes chip, described excitation monitor for carrying out excitation to obtain the excitation data of feedback to gas-filled type current transformer main body, described ARM11 processes chip and is connected with described excitation monitor, for determining the defect kind of transformer based on described excitation monitor.
2. the automated watch-keeping facility of current transformer as claimed in claim 1, it is characterised in that described current transformer includes:
Excitation monitor, gas-filled type current transformer main body is carried out the excitation resistance scaled value to obtain the excitation data of feedback, when obtaining knee voltage, keen current, the described transformer resistance scaled value when 25 degree and described transformer at 75 degree according to excitation data；
Gas-filled type current transformer main body, including transformer casing, transformer monitoring mouth, winding, Secondary Winding, iron core, a rosette and the air chamber that insulate, winding, Secondary Winding, iron core, a rosette and the air chamber that insulate are all in described shell, described rosette is for being incorporated into described iron core by a described winding and described Secondary Winding, described insulation air chamber holds described iron core, described transformer monitoring mouth is arranged on the side of transformer casing, as the monitoring port of gas in transformer；
Interface conversion threeway, monitors mouth with described transformer and is connected；
First hand-operated valve, is connected with described interface conversion threeway；
Two-way, is connected with described first hand-operated valve, is also connected with the first switch electromagnetic valve；
First switch electromagnetic valve, is connected with pressure maintaining valve；
Pressure maintaining valve, is connected with charge air conditioning infrared sensor, and it is also provided with Pressure gauge；
Charge air conditioning infrared sensor, measures air chamber with sulfur dioxide and is connected, and is also embedded with sulfur dioxide electrochemical sensor in the gas chamber shell of sulfur dioxide measurement air chamber, and charge air conditioning infrared sensor is for measuring the charge air conditioning purity of gas indoor gas；
Sulfur dioxide measures air chamber, including air chamber base, gas chamber shell and sealing ring；
Sulfur dioxide electrochemical sensor, for measuring the content of sulfur dioxide of gas indoor gas；
4th hand-operated valve, measures air chamber with sulfur dioxide and is connected；
Environment temperature sensor, for monitoring the real time temperature of transformer surrounding in real time；
Traffic filter, it is connected respectively with Pressure gauge, charge air conditioning infrared sensor, sulfur dioxide electrochemical sensor and environment temperature sensor, for being filtered respectively the force value of Pressure gauge output, charge air conditioning purity, content of sulfur dioxide and real time temperature processing；
Signal amplifier, is connected with traffic filter, for filtered force value, charge air conditioning purity, content of sulfur dioxide and real time temperature are amplified respectively；
Analog-digital converter, it is connected with signal amplifier, for the force value after amplifying, charge air conditioning purity, content of sulfur dioxide and real time temperature are carried out analog digital conversion respectively to obtain numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature；
TF storage chip, is used for prestoring pressure threshold scope, charge air conditioning purity threshold range, content of sulfur dioxide threshold range and real time temperature threshold range；
ARM11 processes chip, is connected with excitation monitor, and resistance scaled value during based on resistance scaled value when 25 degree of knee voltage, keen current, described transformer and described transformer at 75 degree determines the defect kind of transformer；It is connected with analog-digital converter also by input/output interface, to receive numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature, also it is connected with TF storage chip, to send Pressure Alarm when numerical pressure value is beyond pressure threshold scope, charge air conditioning purity alarm signal is sent when digitized charge air conditioning purity is beyond charge air conditioning purity threshold range, content of sulfur dioxide alarm signal is sent when digitized content of sulfur dioxide is beyond content of sulfur dioxide threshold range, ambient temperature alarm signal is sent when digitized real time temperature is beyond real time temperature threshold range；
LCDs, process chip with ARM11 to be connected, for showing the defect kind of transformer in real time, real-time displaying digitized force value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature, be additionally operable to the word information warning that display in real time is corresponding respectively with Pressure Alarm, charge air conditioning purity alarm signal, content of sulfur dioxide alarm signal and ambient temperature alarm signal；
Audible-visual annunciator, processes chip with ARM11 and is connected, for sending the acousto-optic warning signal corresponding with Pressure Alarm, charge air conditioning purity alarm signal, content of sulfur dioxide alarm signal or ambient temperature alarm signal；
Bluetooth communication equipment, the power management server processing chip and far-end with ARM11 is connected, for numerical pressure value, digitized charge air conditioning purity, digitized content of sulfur dioxide and digitized real time temperature are sent to power management server place in real time by bluetooth communications link；
Wherein, described Bluetooth communication equipment includes the first search subset, the second search subset and coupling connexon equipment；Wherein, the first search subset, determine that micro bluetooth network that Bluetooth MAC address concentration is the highest is as target piconet according to MAC Address concentration in Bluetooth Scatternet, a Bluetooth Scatternet is made up of multiple micro bluetooth networks；Second search subset, searches for subset with described first and is connected, and in described target piconet, finds, quantity preceding by signal intensity ranking and is not more than one or more Bluetooth communication equipments of 7 as one or more target Bluetooth devices；Equipment connexon equipment, searches for subset with described second and is connected, start and be connected with the Bluetooth communication of the one or more target Bluetooth devices；
When having the quantity of Bluetooth communication equipment of signal in described target piconet for during be more than or equal to 7, the quantity of the one or more target Bluetooth devices is 7；
When having the quantity of Bluetooth communication equipment of signal in described target piconet for during less than 7, the quantity of the one or more target Bluetooth devices is the quantity of the Bluetooth communication equipment having signal in described target piconet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610115128.1A CN105716657A (en) | 2015-11-16 | 2015-11-16 | Automatic monitoring device of current transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610115128.1A CN105716657A (en) | 2015-11-16 | 2015-11-16 | Automatic monitoring device of current transformer |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510788796.6A Division CN105466485A (en) | 2015-11-16 | 2015-11-16 | Automatic monitoring device of current transformer |
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| CN105716657A true CN105716657A (en) | 2016-06-29 |
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| CN201610115128.1A Withdrawn CN105716657A (en) | 2015-11-16 | 2015-11-16 | Automatic monitoring device of current transformer |
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Application publication date: 20160629 |