CN205175564U - Temperature measurement circuit and monitored control system of electric wire netting contact - Google Patents
Temperature measurement circuit and monitored control system of electric wire netting contact Download PDFInfo
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- CN205175564U CN205175564U CN201521021512.2U CN201521021512U CN205175564U CN 205175564 U CN205175564 U CN 205175564U CN 201521021512 U CN201521021512 U CN 201521021512U CN 205175564 U CN205175564 U CN 205175564U
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- Y02B60/50—
Abstract
The utility model provides a temperature measurement circuit and monitored control system of electric wire netting contact, the temperature measurement circuit of electric wire netting contact includes temperature acquisition module, data processing module and wireless data transmission radio station. Temperature acquisition module installs in electric wire netting contact department, is suitable for the temperature with the electric wire netting contact to convert analog voltage signal into, data processing module with temperature acquisition module connects, and it is regularly right to be suitable for analog voltage signal carries out digital analog conversion and temperature compensating handles in order to obtain digital voltage signal, the wireless data transmission radio station with data processing module connects, and it will through wireless communication to be suitable for the digit voltage signal send to the data acquisition terminal. The utility model provides a temperature measurement circuit and monitored control system of electric wire netting contact has reduced temperature measurement circuit's consumption, has prolonged power supply battery's life.
Description
Technical field
The utility model relates to electrical net detect technical field, particularly a kind of temperature sensing circuit of electrical network contact and supervisory system.
Background technology
Along with the increase day by day of social power consumption, the electrical load of high voltage electric equipment as transformer, mutual inductor, high-tension switch cabinet, disconnecting link etc. that carry large electricity conveying task is also increasing sharply.Connection contact in electrical network between numerous high voltage electric equipment itself and equipment is link the weakest in electric power conveying, and the substantive issue of this weak link is exactly node heating.Along with the increase of load, cause contact to generate heat and form vicious cycle: temperature rise, expansion, contraction, oxidation, resistance increases, heats up once again.Light then cause the phenomenon of power consumption, line loss, heavy then lead to security incident.According to State Grid security incident circular statistics, China occurs over just the electric power accident in power station every year, 40% be overheated by high voltage electric equipment caused by.Therefore, the temperature of detection of grid contact is very important.According to the difference of temperature-measurement principle, detection of grid contact temperature is divided into following several mode:
One, conventional temperature-measurement mode.Adopt the conventional device detection of grid contact temperature such as thermopair, thermal resistance, semiconductor temperature sensor, its shortcoming is cannot wireless and passive, needs plain conductor signal transmission, cannot independent wireless work, and insulating property cannot ensure.
Two, optical fiber temperature-measurement mode.Adopt fiber optic transmission temperature signal, its shortcoming is that optical fiber has the characteristics such as easy to break, easily broken, non-refractory, easily cause optical fiber creeping discharge after accumulation dust thus insulativity is reduced, and optical fiber belongs to wired mode, existing equipment framework can be destroyed, affect by switch cabinet structure, the difficulty that connects up in cabinet is larger.
Three, infrared measurement of temperature mode.Infrared measurement of temperature is contactless temperature-measuring, apply more in the temperature detection of the equipment such as transformer station's sleeve pipe, lightning arrester, bus, its shortcoming is that indirectly obtaining its accuracy of temperature data by infared spectrum can not meet the demands, artificial cognition can't be substituted to the Computer Recognition Technology level of infared spectrum, automaticity is not high, does not utilize and promotes the use of.
Four, active radio thermometric.Adopt active radio temperature sensor detection of grid contact temperature, which overcome the defect of above-mentioned several detection mode, apply the most general in electrical network contact temperature detects, its shortcoming is that testing circuit needs powered battery, when battery electric quantity is not enough, there will be false alarm phenomenon, affect monitoring accuracy, thus need often to change battery.
Utility model content
The problem being the active radio temperature measurement circuit of electrical network contact and needing often to change battery to be solved in the utility model.
For solving the problem, the utility model provides a kind of temperature sensing circuit of electrical network contact, comprises temperature collect module, data processing module and wireless digital broadcasting station;
Described temperature collect module is arranged on electrical network contact place, and being suitable for the temperature transition of electrical network contact is analog voltage signal;
Described data processing module is connected with described temperature collect module, is suitable for timing and carries out analog-to-digital conversion process and temperature compensation process to obtain digital voltage signal to described analog voltage signal;
Described wireless digital broadcasting station is connected with described data processing module, is suitable for, by communication, described digital voltage signal is sent to data collection station.
By the timing of described data processing module, analog-to-digital conversion process and temperature compensation process are carried out to described analog voltage signal, the duty of described temperature collect module, described data processing module and described wireless digital broadcasting station dormancy and between waking up alternately.During dormancy, the working current of described data processing module, described temperature collect module and described wireless digital broadcasting station is very low, when waking up described data processing module, described temperature collect module and described wireless digital broadcasting station working current increase but wakeup time is short, thus in the whole work period, the power consumption of the temperature sensing circuit of described electrical network contact is very low, extend the serviceable life of supplying cell, without the need to often changing battery.
Optionally, described temperature collect module comprises MCP9700 integrated circuit, resistance, NPN triode and hummer;
1st pin and the 5th pin of described MCP9700 integrated circuit are unsettled, 2nd pin ground connection of described MCP9700 integrated circuit, 3rd pin of described MCP9700 integrated circuit connects one end of described resistance and is suitable for exporting described analog voltage signal, 4th pin of described MCP9700 integrated circuit is suitable for reception first supply voltage, the other end of described resistance connects the base stage of described NPN triode, the grounded emitter of described NPN triode, the collector of described NPN triode connects one end of described hummer, the other end of described hummer is suitable for receiving described first supply voltage.
Optionally, described temperature collect module also comprises the first filter capacitor; One end of described first filter capacitor connects the 4th pin of described MCP9700 integrated circuit, the other end ground connection of described first filter capacitor.By arranging described first filter capacitor, eliminate clutter and the alternating component of described first supply voltage.
Optionally, described data processing module comprises PIC16F1825 integrated circuit, and described wireless digital broadcasting station comprises SI4432 wireless module;
1st pin of described PIC16F1825 integrated circuit is suitable for receiving second source voltage, 2nd pin of described PIC16F1825 integrated circuit, 4th pin, 5th pin, 6th pin, 12nd pin and the 13rd pin unsettled, 3rd pin of described PIC16F1825 integrated circuit is suitable for receiving described analog voltage signal, 7th pin of described PIC16F1825 integrated circuit connects the 4th pin of described SI4432 wireless module, 8th pin of described PIC16F1825 integrated circuit connects the 6th pin of described SI4432 wireless module, 9th pin of described PIC16F1825 integrated circuit connects the 7th pin of described SI4432 wireless module, 10th pin of described PIC16F1825 integrated circuit connects the 5th pin of described SI4432 wireless module, 11st pin of described PIC16F1825 integrated circuit connects the 3rd pin of described SI4432 wireless module, 14th pin ground connection of described PIC16F1825 integrated circuit, 1st pin of described SI4432 wireless module and the 2nd pin ground connection, 8th pin of described SI4432 wireless module is suitable for reception the 3rd supply voltage, 9th pin of described SI4432 wireless module, 10th pin and the 11st pin unsettled, 12nd pin of described SI4432 wireless module and the 14th pin ground connection, 13rd pin of described SI4432 wireless module is suitable for, by communication, described digital voltage signal is sent to data collection station.
Optionally, described wireless digital broadcasting station also comprises the second filter capacitor and storage capacitor; One end of described second filter capacitor connects one end of described storage capacitor and the 8th pin of described SI4432 wireless module, and the other end of described second filter capacitor connects the other end of described storage capacitor and the 12nd pin of described SI4432 wireless module.By arranging described second filter capacitor, eliminate clutter and the alternating component of described second source voltage.
Based on the temperature sensing circuit of above-mentioned electrical network contact, the utility model also provides a kind of temperature monitoring system of electrical network contact, comprises the temperature sensing circuit of data collection station, analytical equipment, warning device and at least two above-mentioned electrical network contacts;
Described data collection station is suitable for the digital temperature signal being received the transmission of described wireless digital broadcasting station by communication, and described digital temperature signal is forwarded to described analytical equipment;
Described analytical equipment is connected with described data collection station, is suitable for the temperature changing trend according to described digital temperature signal display electrical network contact, and sends trigger pip when the temperature of electrical network contact meets pre-conditioned;
Described warning device is connected with described analytical equipment, is suitable for sending alerting signal when receiving described trigger pip.
The temperature monitoring system of the electrical network contact that the utility model provides, due to the lower power consumption of the temperature sensing circuit of each electrical network contact, the total power consumption of the temperature monitoring system of whole electrical network contact reduces, and solves electric energy.
Optionally, described alerting signal comprises voice signal, picture signal or letter signal.
Compared with prior art, the utility model has the following advantages:
The temperature sensing circuit of the electrical network contact that the utility model provides, data processing module periodically carries out analog-to-digital conversion process and temperature compensation process to the analog voltage signal that temperature collect module sends, and the digital voltage signal of acquisition is sent to wireless digital broadcasting station.Due to described data processing module timing dormancy and waking up, during dormancy, the working current of described data processing module, described temperature collect module and described wireless digital broadcasting station is very low, when waking up described data processing module, described temperature collect module and described wireless digital broadcasting station working current increase but wakeup time is short, thus the power consumption of the temperature sensing circuit of described electrical network contact is very low, extend the serviceable life of supplying cell, without the need to often changing battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the temperature sensing circuit of the electrical network contact of a kind of embodiment of the utility model;
Fig. 2 is the structural representation of the temperature sensing circuit of the electrical network contact of the another kind of embodiment of the utility model;
Fig. 3 is the structural representation of the temperature monitoring system of the electrical network contact of the utility model embodiment.
Embodiment
Below in conjunction with embodiment and accompanying drawing, to the detailed description further of the utility model do, but embodiment of the present utility model is not limited thereto.
Fig. 1 is the structural representation of the temperature sensing circuit of the electrical network contact of a kind of embodiment of the utility model, the temperature sensing circuit temperature collect module 11 of described electrical network contact, data processing module 12 and wireless digital broadcasting station 13.Particularly, described temperature collect module 11 is arranged on electrical network contact place, is suitable for the temperature gathering electrical network contact, and is analog voltage signal by the temperature transition of electrical network contact.Described data processing module 12 is connected with described temperature collect module 11, be suitable for timing and analog-to-digital conversion process and temperature compensation process carried out to obtain digital voltage signal to described analog voltage signal, the actual temperature of described digital voltage signal and corresponding electrical network contact.Described wireless digital broadcasting station 13 is connected with described data processing module 12, is suitable for, by communication, described digital voltage signal is sent to data collection station.
When described data processing module 12 does not carry out analog-to-digital conversion process and temperature compensation process to described analog voltage signal, described temperature collect module 11, described data processing module 12 and described wireless digital broadcasting station 13 are in dormant state, the working current of described temperature collect module 11, described data processing module 12 and described wireless digital broadcasting station 13 is very little, and the power consumption of whole circuit is very little; When described data processing module 12 carries out analog-to-digital conversion process and temperature compensation process to described analog voltage signal, described temperature collect module 11, described data processing module 12 and described wireless digital broadcasting station 13 are in wake-up states, the working current of described temperature collect module 11, described data processing module 12 and described wireless digital broadcasting station 13 increases, but the time being in wake-up states due to described temperature collect module 11, described data processing module 12 and described wireless digital broadcasting station 13 is very short, the power consumption of whole circuit is not high yet.Therefore, the power consumption of the temperature sensing circuit of described electrical network contact is very low, extends the serviceable life of supplying cell, without the need to often changing battery.
Fig. 2 is the structural representation of the temperature sensing circuit of the electrical network contact of the another kind of embodiment of the utility model.In the present embodiment, described temperature collect module 11 comprises the MCP9700 integrated circuit of MicroChip company, resistance R1, NPN triode Q1 and hummer 21, described data processing module 12 comprises the PIC16F1825 integrated circuit of MicroChip company, described wireless digital broadcasting station 13 comprises SI4432 wireless module, and the master chip of described SI4432 wireless module adopts the SI4432 integrated circuit of SiliconLabs company.
Particularly, 1st pin and the 5th pin of described MCP9700 integrated circuit are unsettled, 2nd pin ground connection of described MCP9700 integrated circuit, 3rd pin of described MCP9700 integrated circuit connects one end of described resistance R1 and is suitable for exporting described analog voltage signal, 4th pin of described MCP9700 integrated circuit is suitable for reception first supply voltage VCC1, the other end of described resistance R1 connects the base stage of described NPN triode Q1, the grounded emitter of described NPN triode Q1, the collector of described NPN triode Q1 connects one end of described hummer 21, the other end of described hummer 21 is suitable for receiving described first supply voltage VCC1.Described temperature collect module 11 also comprises the first filter capacitor C1, and one end of described first filter capacitor C1 connects the 4th pin of described MCP9700 integrated circuit, the other end ground connection of described first filter capacitor C1.By the filtering process of described first filter capacitor C1, eliminate clutter and the alternating component of described first supply voltage VCC1.In the present embodiment, described resistance R1, described NPN triode Q1 and described hummer 21 form local warning circuit, when the temperature of electrical network contact exceedes predetermined threshold value, described analog voltage signal increases and controls described NPN triode Q1 conducting, make described hummer 21 sounding alarm, remind field maintenance person in time.
1st pin of described PIC16F1825 integrated circuit is suitable for receiving second source voltage VCC2, 2nd pin of described PIC16F1825 integrated circuit, 4th pin, 5th pin, 6th pin, 12nd pin and the 13rd pin unsettled, 3rd pin of described PIC16F1825 integrated circuit is suitable for receiving described analog voltage signal, 7th pin of described PIC16F1825 integrated circuit connects the 4th pin of described SI4432 wireless module, 8th pin of described PIC16F1825 integrated circuit connects the 6th pin of described SI4432 wireless module, 9th pin of described PIC16F1825 integrated circuit connects the 7th pin of described SI4432 wireless module, 10th pin of described PIC16F1825 integrated circuit connects the 5th pin of described SI4432 wireless module, 11st pin of described PIC16F1825 integrated circuit connects the 3rd pin of described SI4432 wireless module, 14th pin ground connection of described PIC16F1825 integrated circuit, 1st pin of described SI4432 wireless module and the 2nd pin ground connection, 8th pin of described SI4432 wireless module is suitable for reception the 3rd supply voltage VCC3, 9th pin of described SI4432 wireless module, 10th pin and the 11st pin unsettled, 12nd pin of described SI4432 wireless module and the 14th pin ground connection, 13rd pin of described SI4432 wireless module is suitable for, by communication, described digital voltage signal is sent to data collection station.
Described wireless digital broadcasting station 13 also comprises the second filter capacitor C2 and storage capacitor C3.One end of described second filter capacitor C2 connects one end of described storage capacitor C3 and the 8th pin of described SI4432 wireless module, and the other end of described second filter capacitor C2 connects the other end of described storage capacitor C3 and the 12nd pin of described SI4432 wireless module.By the filtering process of described second filter capacitor C2, eliminate clutter and the alternating component of described 3rd supply voltage VCC3.It should be noted that, described first supply voltage VCC1, described second source voltage VCC2 and described 3rd supply voltage VCC3 are provided by the battery powering to described temperature sensing circuit.
Those skilled in the art know function and the internal circuit configuration of described MCP9700 integrated circuit, described PIC16F1825 integrated circuit and described each pin of SI4432 wireless module, do not repeat them here.The temperature sensing circuit of the electrical network contact of the present embodiment, described PIC16F1825 integrated circuit adopts software administration power consumption, timing dormancy and waking up.During dormancy, the working current that whole temperature sensing circuit consumes is at 8 μ about A; When waking up, the total working Current Control of described MCP9700 integrated circuit and described PIC16F1825 integrated circuit, at 5mA, after the process of described PIC16F1825 integrated circuit data completes, is waken described SI4432 wireless module up, is carried out data transmission.Because described SI4432 wireless module will carry out wireless transmission, working current is by increasing to 30mA, but this operating mode duration is extremely short, is about 3ms.Gathered a secondary data if arranged every 15 minutes, then the working time of the temperature sensing circuit battery non-exchanging of described electrical network contact is greater than 5 years.
The utility model also provides a kind of temperature monitoring system of electrical network contact, and Fig. 3 is the structural representation of the temperature monitoring system of the electrical network contact of the utility model embodiment.The temperature monitoring system of described electrical network contact comprise data collection station 31, analytical equipment 32, warning device 33 and at least two electrical network contacts temperature sensing circuit (temperature sensing circuit 1 of electrical network contact, electrical network contact temperature sensing circuit 2 ..., electrical network contact temperature sensing circuit N, N be greater than 1 integer), the temperature sensing circuit of described electrical network contact can with reference to the description of previous embodiment.
Particularly, the digital temperature signal that the wireless digital broadcasting station that described data collection station 31 is suitable for being received in the temperature sensing circuit of described electrical network contact by communication sends, and described digital temperature signal is forwarded to described analytical equipment 32.
Described analytical equipment 32 is connected with described data collection station 31, is suitable for the temperature changing trend according to described digital temperature signal display electrical network contact, and sends trigger pip when the temperature of electrical network contact meets pre-conditioned.Further, described analytical equipment 32 can show the temperature changing trend of electrical network contact with primary connection figure, curve or form mode.When described analytical equipment 32 is with the temperature changing trend of curve mode display electrical network contact, curve can comprise many days curve comparisons, different separate the temperature comparisons of same equipment, year curve, the moon various ways such as curve.In the present embodiment, describedly pre-conditionedly default rate of change can be greater than for the temperature of electrical network contact higher than the rate temperature change of preset temperature or described electrical network contact.
Described warning device 33 is connected with described analytical equipment 32, is suitable for sending alerting signal when receiving described trigger pip.Described alerting signal comprises voice signal, picture signal or letter signal.
The above; it is only preferred embodiment of the present utility model; not do any pro forma restriction to the utility model, every any simple modification, equivalent variations done above embodiment according to technical spirit of the present utility model, all falls within protection domain of the present utility model.
Claims (7)
1. a temperature sensing circuit for electrical network contact, is characterized in that, comprises temperature collect module, data processing module and wireless digital broadcasting station;
Described temperature collect module is arranged on electrical network contact place, and being suitable for the temperature transition of electrical network contact is analog voltage signal;
Described data processing module is connected with described temperature collect module, is suitable for timing and carries out analog-to-digital conversion process and temperature compensation process to obtain digital voltage signal to described analog voltage signal;
Described wireless digital broadcasting station is connected with described data processing module, is suitable for, by communication, described digital voltage signal is sent to data collection station.
2. the temperature sensing circuit of electrical network contact according to claim 1, is characterized in that, described temperature collect module comprises MCP9700 integrated circuit, resistance, NPN triode and hummer;
1st pin and the 5th pin of described MCP9700 integrated circuit are unsettled, 2nd pin ground connection of described MCP9700 integrated circuit, 3rd pin of described MCP9700 integrated circuit connects one end of described resistance and is suitable for exporting described analog voltage signal, 4th pin of described MCP9700 integrated circuit is suitable for reception first supply voltage, the other end of described resistance connects the base stage of described NPN triode, the grounded emitter of described NPN triode, the collector of described NPN triode connects one end of described hummer, the other end of described hummer is suitable for receiving described first supply voltage.
3. the temperature sensing circuit of electrical network contact according to claim 2, is characterized in that, described temperature collect module also comprises the first filter capacitor;
One end of described first filter capacitor connects the 4th pin of described MCP9700 integrated circuit, the other end ground connection of described first filter capacitor.
4. the temperature sensing circuit of electrical network contact according to claim 1, is characterized in that, described data processing module comprises PIC16F1825 integrated circuit, and described wireless digital broadcasting station comprises SI4432 wireless module;
1st pin of described PIC16F1825 integrated circuit is suitable for receiving second source voltage, 2nd pin of described PIC16F1825 integrated circuit, 4th pin, 5th pin, 6th pin, 12nd pin and the 13rd pin unsettled, 3rd pin of described PIC16F1825 integrated circuit is suitable for receiving described analog voltage signal, 7th pin of described PIC16F1825 integrated circuit connects the 4th pin of described SI4432 wireless module, 8th pin of described PIC16F1825 integrated circuit connects the 6th pin of described SI4432 wireless module, 9th pin of described PIC16F1825 integrated circuit connects the 7th pin of described SI4432 wireless module, 10th pin of described PIC16F1825 integrated circuit connects the 5th pin of described SI4432 wireless module, 11st pin of described PIC16F1825 integrated circuit connects the 3rd pin of described SI4432 wireless module, 14th pin ground connection of described PIC16F1825 integrated circuit, 1st pin of described SI4432 wireless module and the 2nd pin ground connection, 8th pin of described SI4432 wireless module is suitable for reception the 3rd supply voltage, 9th pin of described SI4432 wireless module, 10th pin and the 11st pin unsettled, 12nd pin of described SI4432 wireless module and the 14th pin ground connection, 13rd pin of described SI4432 wireless module is suitable for, by communication, described digital voltage signal is sent to data collection station.
5. the temperature sensing circuit of electrical network contact according to claim 4, is characterized in that, described wireless digital broadcasting station also comprises the second filter capacitor and storage capacitor;
One end of described second filter capacitor connects one end of described storage capacitor and the 8th pin of described SI4432 wireless module, and the other end of described second filter capacitor connects the other end of described storage capacitor and the 12nd pin of described SI4432 wireless module.
6. a temperature monitoring system for electrical network contact, is characterized in that, comprises the temperature sensing circuit of data collection station, analytical equipment, warning device and the electrical network contact described at least two any one of claim 1 to 5;
Described data collection station is suitable for the digital temperature signal being received the transmission of described wireless digital broadcasting station by communication, and described digital temperature signal is forwarded to described analytical equipment;
Described analytical equipment is connected with described data collection station, is suitable for the temperature changing trend according to described digital temperature signal display electrical network contact, and sends trigger pip when the temperature of electrical network contact meets pre-conditioned;
Described warning device is connected with described analytical equipment, is suitable for sending alerting signal when receiving described trigger pip.
7. the temperature monitoring system of electrical network contact according to claim 6, is characterized in that, described alerting signal comprises voice signal, picture signal or letter signal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521021512.2U CN205175564U (en) | 2015-12-10 | 2015-12-10 | Temperature measurement circuit and monitored control system of electric wire netting contact |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201521021512.2U CN205175564U (en) | 2015-12-10 | 2015-12-10 | Temperature measurement circuit and monitored control system of electric wire netting contact |
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| CN205175564U true CN205175564U (en) | 2016-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992404A (en) * | 2016-12-15 | 2017-07-28 | 广东威创视讯科技股份有限公司 | A kind of intelligent power socket device |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106992404A (en) * | 2016-12-15 | 2017-07-28 | 广东威创视讯科技股份有限公司 | A kind of intelligent power socket device |
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