CN202110654U - ZigBee technology-based intelligent switch cabinet contact temperature acquiring device - Google Patents
ZigBee technology-based intelligent switch cabinet contact temperature acquiring device Download PDFInfo
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- CN202110654U CN202110654U CN2011202232289U CN201120223228U CN202110654U CN 202110654 U CN202110654 U CN 202110654U CN 2011202232289 U CN2011202232289 U CN 2011202232289U CN 201120223228 U CN201120223228 U CN 201120223228U CN 202110654 U CN202110654 U CN 202110654U
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Abstract
The utility model relates to a ZigBee technology-based intelligent switch cabinet contact temperature acquiring device, comprising a master controller, and a power module, a temperature probe, a real-time clock module and a wireless communication module which are connected with the master controller, wherein the master controller is used for receiving temperature data provided by the temperature probe and a real-time time signal provided by the real-time clock module and transmitting a data packet formed by packing the temperature data and the real-time time signal to the wireless communication module; and the wireless communication module is used for outputting the data packet to a peripheral data management terminal by a ZigBee network. The device has the advantages of being not limited by the position of measuring points and environment conditions, being wide in application scope and the like, and can effectively avoid hardware failures and lower costs on the premise that the peripheral data management terminal is highly reliable in communication.
Description
Technical field
The utility model relates to a kind of intelligent switchboard contact temperature harvester based on the ZigBee technology.
Background technology
Modern society is high to the dependence of electric energy, and the area that electricity consumption density is big more is high more to the dependence of electricity, thereby the reliability of power-supply unit has been proposed increasingly high requirement.As the trolley type switch cubicle that generally uses at present owing to adopt plug to connect between isolating switch and the switch cubicle, when dolly and switch cubicle because of manufacturing, transport and install the contact loose contact that all will cause such as bad; Contact resistance increases; It is too high contact temperature rise to occur, even burns, and causes power failure; These phenomenons are particularly outstanding on high-current switch such as incoming line cabinet, and influence greatly.Therefore, for avoiding the generation of this type of accident, need for equipment that can the at-once monitor contact temperature rise is just seemed very urgent.
Because high-voltage switch contact is in high voltage, high-temperature, high-intensity magnetic field and the extremely strong electromagnetic interference environment, realize the thermometric to contact, must solve the adaptability of above-mentioned measurement mechanism under above-mentioned severe environmental conditions.
As important link in the existing switch contact temperature monitoring process, promptly the temperature acquisition link mainly adopts active type measure (collection) and passive measurement (collection) dual mode:
The advantage of passive measurement is directly to receive the far infrared wave that measurement point sends through convex lens, and receiver (being sensor) can solve high pressure and isolate and the high problem of sensor ambient temperature simple in measurement system structure away from measurement point; Its shortcoming is the measurement point temperature of measuring only in sensor direct-view scope, and this often becomes fatal weakness;
The advantage of active type measure is that the measurement point position is unrestricted, and the sensor mounting arrangements is flexible; Its shortcoming is to solve that the high voltage of sensor between functional reliability, sensor and main frame under high temperature, highfield, the strong magnetic field circumstance condition isolated and the working power problem of sensor self.
This shows,, influenced its role in switch contact temperature monitoring process as the restriction of the sensor that has the switch contact temperature collecting device now because of its structure and performance condition.And; In existing switch contact temperature monitoring process; Sensor is after collecting the real time temperature of switch contact; All need temperature data be sent to peripheral data management terminal,, have shortcomings such as hardware fault rate height and cost height though this mode is reliable through wire transmission modes such as optical fiber.
In sum, existing switch contact temperature collecting device can not satisfy the requirement to the monitoring of switch contact temperature, therefore, presses for a kind of new harvester of research and development, to satisfy the use needs.
Summary of the invention
In order to solve the problem that above-mentioned prior art exists, the utility model aims to provide a kind of intelligent switchboard contact temperature harvester based on the ZigBee technology, realizing collecting temperature data safely and reliably, and realizes the purpose of data wireless transmission.
The described a kind of intelligent switchboard contact temperature harvester of the utility model based on the ZigBee technology; It comprises a master controller and a power module that is connected with this master controller respectively, a temp probe, a real-time clock module and a wireless communication module; Wherein
Said master controller receives the real-time time signal that the temperature data that provides from said temp probe and said real-time clock module provide, and the packet after this temperature data and real-time time signal are packed sends to said wireless communication module;
Said wireless communication module is exported said packet through the ZigBee network to a peripheral data management terminal.
In the above-mentioned intelligent switchboard contact temperature harvester based on the ZigBee technology, said wireless communication module also receives the data request signal from the output of said data management terminal through the ZigBee network.
In above-mentioned intelligent switchboard contact temperature harvester based on the ZigBee technology; Said master controller comprises I2C (the Inter-Integrated Circuit that AD (modulus) modular converter, that is connected with said temp probe is connected with said real-time clock module; The twin wire universal serial bus) the SPI interface (Serial Peripheral Interface, Serial Peripheral Interface) that is connected with said wireless communication module of interface and.
In the above-mentioned intelligent switchboard contact temperature harvester based on the ZigBee technology, said power module comprises that one can coil to getting of said master controller power supply through a voltage conversion circuit.
In above-mentioned intelligent switchboard contact temperature harvester based on the ZigBee technology, said power module also comprises the lithium battery that is connected with said master controller, and the output terminal of said voltage conversion circuit is connected with said lithium battery.
In the above-mentioned intelligent switchboard contact temperature harvester based on the ZigBee technology, the output terminal of said voltage conversion circuit also is connected with said AD modular converter.
In above-mentioned intelligent switchboard contact temperature harvester based on the ZigBee technology; Said wireless communication module comprises a RF (the Radio Frequency that connects successively; Radio frequency) chip, a balun circuit (balance-non-equilibrium change-over circuit) and an antenna; Wherein, said RF chip is connected with said SPI interface.
Owing to adopted above-mentioned technical solution; Be that the utility model utilizes temp probe that the temperature of switch cabinet contact is measured; AD modular converter through master controller carries out analog-to-digital conversion to temperature data then; After the real-time time signal packing that provides with real-time clock module again, final through wireless communication module data management terminal wireless transmission to the periphery temperature data based on the ZigBee technology, thus realized the temperature acquisition function of switch cabinet contact.In addition, the utility model also can be measured current in wire by coil through getting, and utilizes the corresponding relation of the contact temperature under lead load current and the normal condition, for the contact temperature overload alarm provides foundation.It is little that the utility model has overcome the traditional sensors measurement range; To defectives such as requirement on measurement environment height; Have and not limited by measurement point position, environmental baseline, advantage such as applied widely, and can be under the prerequisite that guarantees with peripheral data office terminal high reliable communication; Effectively avoid hardware fault, reduce cost.
Description of drawings
Fig. 1 is a kind of structural representation based on the technological intelligent switchboard contact temperature harvester of ZigBee of the utility model.
Embodiment
Below in conjunction with accompanying drawing, provide the preferred embodiment of the utility model, and describe in detail.
As shown in Figure 1, the utility model, promptly a kind of intelligent switchboard contact temperature harvester based on Zigbee technology, it comprises a master controller 1, a power module 2, a temp probe 3, a real-time clock module 4 and a wireless communication module 5.
Master controller 1 is used to receive the real-time time signal that the temperature data that provides from temp probe 3 and real-time clock module 4 provide, and the packet after this temperature data and the packing of real-time time signal is sent to wireless communication module 5; Master controller 1 comprises the SPI interface 13 that I2C interface 12 and that the AD modular converter 11, that is connected with temp probe 3 is connected with real-time clock module 4 is connected with wireless communication module 5.
That in the present embodiment, master controller 1 adopts is high capacity flash, multi-functional, the high-performance single-chip microcomputer PIC18LF4620 of a 8 bit wide operating voltage ranges of Microchip company production; Than other 8 general 8-digit microcontrollers; Single-chip microcomputer PIC18LF4620 has rich in natural resources and extremely low power consumption more; It is equipped with the ZIGBEE protocol stack; And having the flash (flash memory) of 64KB, the SRAM (SRAM) of 3986bytes and the EEPROM (EPROM) of 1KB, its main synchronous serial interface is supported SPI and I2C, and nearly 10 AD modular converters 11 of 13 passages are arranged; Except normal mode of operation, it also supports idle pulley and park mode, and the electric current under two kinds of patterns can be reduced to 2.5uA and 100nA respectively.
Power module 2 comprises one through get the lithium battery 23 that ability coil 21 and with master controller 1 be connected of a voltage conversion circuit 22 to master controller 1 power supply, and the output terminal of voltage conversion circuit 22 also is connected with lithium battery 23.
Because what the switch contact temperature acquisition adopted is contact type measurement; Be about to contact and lead place (contact that collects and the temperature difference of lead have promptly reflected the temperature rise of switch cabinet contact) that temp probe 3 directly is attached to switch cubicle; Whole harvester operates in high-pressure side, and insulation is had higher requirements, and common solar electric power supply system should not be installed under this running environment; Therefore, this harvester mainly adopts and gets and can come to the device power supply from the mode of switch cubicle bus 24 induction power takings by coil 21; Simultaneously, consider circuit might temporary interruption or underload cause induction current not enough, therefore, adopt lithium battery 23 to can be used as standby power supply; When responding to power taking just often, get ability coil 21 when voltage conversion circuit 22 is given master controller 1 power supply, charge also for lithium battery 23; Be lower than a certain numerical value in case master controller 1 detects supply voltage, switch to lithium battery 23 power supplies immediately, so just guaranteed the stability of device power supply to greatest extent.
In the present embodiment, the output terminal of voltage conversion circuit 22 also is connected with AD modular converter 11, thereby can realize the collection of current in wire.Specifically; In fact owing to get can coil 21 be exactly a current transformer; The faradic size of secondary can reflect the size of electric current on the bus 24; So connect a voltage conversion circuit 22 (voltage conversion circuit 22 can adopt conventional circuit product) that comprises the sampling resistor (not shown) at the secondary of getting ability coil 21, be converted into voltage signal to current signal, then through filtering; Boost etc. and to send into the AD modular converter 11 of master controller 1 after the processing; Last master controller 1 can converse the current value on the bus 24 according to the magnitude of voltage that collects after through Fourier filtering, utilizes the corresponding relation of the contact temperature under lead load current and the normal condition, for the contact temperature overload alarm provides foundation.
Owing to need know the correct time of each collection value during monitoring switch contact temperature; So that the contact situation is analyzed and is predicted that therefore, harvester needs real-time clock module 4 time reference is provided; After harvester has been collected data; Earlier read real-time time, and be attached to each packet the inside, and then send from real-time clock module 4.In the present embodiment, what real-time clock module 4 adopted is the PCF8563 chip, adopts I2C interface 12 to communicate between it and the master controller 1.
Wireless communication module 5 is communicated by letter with a peripheral data management terminal (not shown) through the ZigBee network and is connected; On the one hand; Be used for initiatively exporting the packet that master controller 1 provides, promptly regularly image data be provided, on the other hand to the data management terminal to the data management terminal; Reception can provide the image data of any time according to the requirement at data management terminal at any time from the data request signal of data management terminal output.Wireless communication module 5 comprises successively a RF chip 51, a balun circuit 52 and an antenna 53 that connects, and wherein, RF chip 51 is connected with SPI interface 13.
In the present embodiment, that RF chip 51 adopts is the RF transceiver MRF24J40 of the 2.4GHz of Microchip company production, and its supports ZigBee software stack, and can communicate by letter with master controller 1 easily through SPI interface 13.Because the signal of RF chip 51 sides is balances; And the radiofrequency signal of antenna 53 sides is non-equilibrium; So between must be provided with balun circuit 52 (balun circuit 52 can adopt conventional circuit product) signal is changed; Also to carry out impedance matching after the conversion, make output impedance maintain 50 Ω high-frequency signal.
In sum, the utility model has been realized the acquisition function of switch cabinet contact temperature and current in wire, and has realized the reliable wireless transmission of these data, thus have applied widely, hardware fault is few and low cost and other advantages.
Above-described, be merely the preferred embodiment of the utility model, be not scope in order to qualification the utility model, the foregoing description of the utility model can also be made various variations.Be that every simple, equivalence of doing according to the claims and the description of the utility model application changes and modification, all fall into the claim protection domain of the utility model patent.The utility model not detailed description be the routine techniques content.
Claims (7)
1. intelligent switchboard contact temperature harvester based on ZigBee technology; It is characterized in that; Said harvester comprises a master controller and a power module that is connected with this master controller respectively, a temp probe, a real-time clock module and a wireless communication module, wherein
Said master controller receives the real-time time signal that the temperature data that provides from said temp probe and said real-time clock module provide, and the packet after this temperature data and real-time time signal are packed sends to said wireless communication module;
Said wireless communication module is exported said packet through the ZigBee network to a peripheral data management terminal.
2. the intelligent switchboard contact temperature harvester based on the ZigBee technology according to claim 1 is characterized in that said wireless communication module also receives the data request signal from the output of said data management terminal through the ZigBee network.
3. the intelligent switchboard contact temperature harvester based on the ZigBee technology according to claim 1 and 2; It is characterized in that said master controller comprises the SPI interface that I2C interface and that the AD modular converter, that is connected with said temp probe is connected with said real-time clock module is connected with said wireless communication module.
4. the intelligent switchboard contact temperature harvester based on the ZigBee technology according to claim 3 is characterized in that, said power module comprises that one can coil to getting of said master controller power supply through a voltage conversion circuit.
5. the intelligent switchboard contact temperature harvester based on the ZigBee technology according to claim 4; It is characterized in that; Said power module also comprises the lithium battery that is connected with said master controller, and the output terminal of said voltage conversion circuit is connected with said lithium battery.
6. according to claim 4 or 5 described intelligent switchboard contact temperature harvesters, it is characterized in that the output terminal of said voltage conversion circuit also is connected with said AD modular converter based on the ZigBee technology.
7. the intelligent switchboard contact temperature harvester based on the ZigBee technology according to claim 3; It is characterized in that; Said wireless communication module comprises a RF chip, a balun circuit and an antenna that connects successively, and wherein, said RF chip is connected with said SPI interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202232289U CN202110654U (en) | 2011-06-28 | 2011-06-28 | ZigBee technology-based intelligent switch cabinet contact temperature acquiring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202232289U CN202110654U (en) | 2011-06-28 | 2011-06-28 | ZigBee technology-based intelligent switch cabinet contact temperature acquiring device |
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| Publication Number | Publication Date |
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| CN202110654U true CN202110654U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202232289U Expired - Lifetime CN202110654U (en) | 2011-06-28 | 2011-06-28 | ZigBee technology-based intelligent switch cabinet contact temperature acquiring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429007A (en) * | 2019-08-23 | 2019-11-08 | 江苏泓光轨道设备有限公司 | Intelligent contactor |
-
2011
- 2011-06-28 CN CN2011202232289U patent/CN202110654U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429007A (en) * | 2019-08-23 | 2019-11-08 | 江苏泓光轨道设备有限公司 | Intelligent contactor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120111 |