CN207881845U - A kind of Multi-point wireless temperature measuring device - Google Patents
A kind of Multi-point wireless temperature measuring device Download PDFInfo
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- CN207881845U CN207881845U CN201721905929.4U CN201721905929U CN207881845U CN 207881845 U CN207881845 U CN 207881845U CN 201721905929 U CN201721905929 U CN 201721905929U CN 207881845 U CN207881845 U CN 207881845U
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- temperature acquisition
- microcontroller
- acquisition terminal
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- 238000004891 communication Methods 0.000 claims abstract description 37
- 238000012545 processing Methods 0.000 claims description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 8
- 229910052744 lithium Inorganic materials 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
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- 238000006243 chemical reaction Methods 0.000 claims description 5
- 208000010086 Hypertelorism Diseases 0.000 claims description 2
- 206010020771 Hypertelorism of orbit Diseases 0.000 claims description 2
- 238000002955 isolation Methods 0.000 claims description 2
- 238000009529 body temperature measurement Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000013307 optical fiber Substances 0.000 abstract description 4
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- 231100001261 hazardous Toxicity 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- CVOFKRWYWCSDMA-UHFFFAOYSA-N 2-chloro-n-(2,6-diethylphenyl)-n-(methoxymethyl)acetamide;2,6-dinitro-n,n-dipropyl-4-(trifluoromethyl)aniline Chemical compound CCC1=CC=CC(CC)=C1N(COC)C(=O)CCl.CCCN(CCC)C1=C([N+]([O-])=O)C=C(C(F)(F)F)C=C1[N+]([O-])=O CVOFKRWYWCSDMA-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
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- 238000009434 installation Methods 0.000 description 1
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- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model discloses a kind of Multi-point wireless temperature measuring device, including is arranged in the coordinator of low-pressure side safety zone and at least one setting on high-tension side temperature acquisition terminal；Coordinator is electrically connected with temperature acquisition terminal wireless；When communication distance is difficult to meet coordinator with temperature acquisition terminal direct communication, router is set therebetween and is used for expanding communication distance；Coordinator passes through router and the mutual radio connection of temperature acquisition terminal with the mutual radio connection of temperature acquisition terminal or coordinator；Advantageous effect is, to high voltage isolator contact position wireless temperature measurement, temperature data is wirelessly transmitted to coordinator, overcomes the problems, such as that high-voltage switch gear is difficult to on-line measurement and infrared optical fiber measures limited, effective generation for preventing the accidents such as electrical and fire.
Description
Technical field
The utility model is related to a kind of wireless temperature measuring device and its measurement methods, and wireless telecommunications are based on more particularly to one kind
Multiple point temperature measurement device and its temp measuring method, realize long-range monitoring and the health control of equipment.
Background technology
With the continuous growth of power load, high voltage isolator in During Process of Long-term Operation, frequent occurrence switch contact,
Positions are because of aging, poor contact or contact resistance is excessive leads to the phenomenon that temperature anomaly raising occur for busbar connection etc., if not
It can find and be safeguarded in time, it will cause serious equipment breakdown.Therefore, it is to prevent such thing to solve switch problems of excessive heat
Therefore the key occurred, realize that temperature monitoring in real time is to ensure the important means of high-tension apparatus safe operation.And high voltage isolator,
Limitation due to being in high voltage operation at itself, contact point heating part are difficult to realize common online thermometric and are supervised
It surveys.
For the above situation, currently, be generally monitored in the market using optical fiber temperature-measurement and infrared temperature-test technology, deficiency
Place is that the fraud rate of optical fiber temperature-measurement is higher, and infrared measurement of temperature is easily influenced by environmental factor, on the temperature measuring application of hazardous area still
There are considerable restraint and puzzlement, market active demand one kind that can implement to monitor in hazardous area, high wireless of at low cost, reliability
Temperature measuring equipment.
Invention content
Technical problem to be solved by the utility model is to provide a kind of wireless temperature measuring devices at low cost, reliability is high
And temp measuring method.
The utility model is the technical scheme adopted is that a kind of Multi-point wireless temperature measuring device, including setting are pacified in low-pressure side
Region-wide coordinator and at least one setting are on high-tension side temperature acquisition terminal；The coordinator and temperature acquisition terminal
Radio connection.
Low-pressure side safety zone between the coordinator and temperature acquisition terminal, when coordinator and temperature acquisition are whole
When the hypertelorism at end cannot meet the two direct communication, most two-stages, every grade of router can be set therebetween
For expanding communication distance；Coordinator passes through router and temperature with the mutual radio connection of temperature acquisition terminal or coordinator
The mutual radio connection of acquisition terminal.
The coordinator can carry eight temperature acquisition terminals.
The temperature acquisition terminal, including temperature acquisition microcontroller, temperature sensor, signal processing circuit, temperature are adopted
Collect balun antenna, a reference source and independent current source；The temperature sensor is electromechanical by signal processing circuit and temperature acquisition monolithic
Connection, temperature acquisition balun antenna are electrically connected to each other with temperature acquisition microcontroller, and independent current source is respectively that above-mentioned each unit provides
Electric power；The temperature sensor uses NTC thermistor collecting temperature；The independent current source is low-down using year discharge rate
Lithium Asia battery；Temperature acquisition microcontroller is using built-in RF transceivers and supports ultralow Low-power-consumptiodormancy dormancy microcontroller as controllable coremaking
Piece, model are CC2530F32, and chip interior RF radio-frequency modules coordinate peripheral balun antenna to realize wireless telecommunications, use
SimpleTI communication protocols, communication frequency are located at the 2.4G frequency ranges in ISM.
The coordinator, including coordinator microcontroller, isolated power supply, coordinator balun antenna, configuration button, OLED
It has been shown that, 485 communication interfaces and signal output；The configuration button and OLED show and connect respectively with coordinator microcontroller,
485 communication interfaces and coordinator balun antenna are electrically connected to each other with coordinator microcontroller respectively, and coordinator microcontroller passes through signal
Output output electric signal, isolated power supply provide electric power for coordinator microcontroller；Isolated power supply will input 24V power supplies by every
485 telecommunication circuits are supplied from conversion circuit, it is completely isolated with main circuit；The coordinator microcontroller 24 is received and dispatched using built-in RF
As can control chip, model is CC2530F256, chip interior RF radio frequency moulds for device and the ultralow Low-power-consumptiodormancy dormancy microcontroller of support
Block coordinates peripheral balun antenna to realize wireless telecommunications, and using 485 communication protocols, communication frequency is located at the frequencies of the 2.4G in ISM
Section.
The utility model has the beneficial effects that：
1. pair high voltage isolator contact position wireless temperature measurement, temperature data is wirelessly transmitted to coordinator, completely to high pressure
Side temperature acquisition strong and weak electricity is isolated, and overcomes the problems, such as that high-voltage switch gear is difficult to on-line measurement and infrared optical fiber is measured and is limited, together
When ensure that the safety of collecting device and communication equipment.
2. temperature acquisition terminal temperature-measuring range reaches -60-300 degree, meets conventional high-pressure disconnecting switch contact point measurement and want
It asks.
3. can understand the temperature data of disconnecting switch contact point in real time, timely or foreseeability discovery and debugging have
Effect prevents the generation of the accidents such as electrical and fire.
4.1 coordinators can at most carry eight temperature acquisition terminals, and two independent communication distances are up to 100 meters, pathway
It can reach 200 meters after being extended by device.
5. coordinator can be built in operating mechanism box, the operating mode more than 1 pair can save space about 3%.
It, can non-stop run 3 years 6. temperature acquisition terminal is independently-powered using 3.3V lithiums Asia battery.
Description of the drawings
Fig. 1 is utility model works schematic diagram；
Fig. 2 is the utility model temperature acquisition terminal inner composition frame chart；
Fig. 3 is the utility model coordinator composition frame chart；
Fig. 4 is the utility model temperature acquisition terminating circuit schematic diagram；
Fig. 5 is the utility model coordinator independent current source circuit diagram；
Fig. 6 is 485 telecommunication circuit schematic diagram of the utility model coordinator；
Fig. 7 is the utility model coordinator signal output apparatus schematic diagram；
Fig. 8 is the utility model coordinator, temperature acquisition terminal single chip circuit schematic diagram.
In figure：
1, coordinator 2, router 4, temperature acquisition terminal
12, temperature sensor 13, signal processing circuit 14, temperature acquisition balun antenna
15, temperature acquisition microcontroller 16, a reference source 17, independent current source
18, isolated power supply 19, configuration button 20,485 communication interfaces
21, coordinator balun antenna 22, OLED show that 23, signal exports
24, coordinator microcontroller 25, NTC sensor 26, precision resistance
27, signal processing circuit 28, reference power supply 29, filter circuit
30, lithium Asia battery 31, anti-reverse diode 32, the first filter capacitor
33, insurance 34, common mode inductance 35, the second filter capacitor
36, switching power source chip 37,5V turn 3.3V chips
38, isolated power supply module 39, automatic turning circuit 40, electrical level transferring chip
41, TVS lightning protection circuits 42, driving triode 43, signal relay
44, singlechip chip 45, SCM peripheral circuit 46, balun match circuit.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and detailed description：
As shown in Figure 1, the utility model Multi-point wireless temperature measuring device, including the coordinator in low-pressure side safety zone is set
1 and it is at least one be arranged on high-tension side temperature acquisition terminal 4；The coordinator 1 is wirelessly electrically connected with temperature acquisition terminal 4
Connect, temperature acquisition terminal by distributing installation on the contacting points position of high voltage isolator, 4 collecting temperature number of temperature acquisition terminal
It is sent to coordinator 1 according to according to certain strategy, coordinator 1 receives and processes, and a coordinator can carry eight temperature acquisitions
Terminal 4.Temperature acquisition terminal starts RSSI scan channels first after temperature acquisition, judges that present channel interference signal is strong
Degree, then carries out data transmission if it is less than setting value, then delays to send by data if it is greater than setting value, carries out signal again and sweeps
It retouches, until channel disturbance reaches requirement or reaches maximum scan number, carries out data transmission.In the coordinator 1 and temperature
Low-pressure side safety zone between acquisition terminal 4, when the two distance farther out, when signal is difficult to meet communication, extension can be also set
Most two-stages of wireless signal transmission paths, every grade of router 2；Coordinator 1 passes through router 2 and temperature acquisition terminal 4
Mutual radio connection adds 2 forward signal of router, opens up when the two distance is difficult to complete communication function farther out
Open up communication distance.
Such as Fig. 3, shown in Fig. 5 to Fig. 8, coordinator 1 includes coordinator microcontroller 24, isolated power supply 18, coordinator balun day
Line 21, configuration button 19, OLED show 22,485 communication interfaces 20 and signal output 23；The configuration button 19 and OLED are aobvious
Show that 22 are electrically connected with coordinator microcontroller 24 respectively, three configuration buttons are responsible for detecting user's input, and OLED screen curtain is responsible for feedback
Input and temperature information show, it is worth noting that, the collected temperature value of one side displays temperature acquisition terminal, on the other hand
Provide the interface of personal-machine interaction to the user, user can complete 1 He of coordinator on panel by operative configuration button 19
Every setting of temperature acquisition terminal.485 communication interfaces 20 and coordinator balun antenna 21 respectively with 24 phase of coordinator microcontroller
Mutually electrical connection, coordinator microcontroller 24 are that coordinator microcontroller 24 carries by 23 output electric signal of signal output, isolated power supply 18
For electric power；485 communication interface 20TVS41 are lightning protection measures, ensure the normal communication of Modbus, the cooperation of 485 conversion chips 40 is certainly
Dynamic conversion circuit 39 completes the mutual conversion of the Transistor-Transistor Logic level and 485 level of microcontroller 24.The 24V that 18 outside of isolated power supply introduces
Power supply is sent into switching power source chip 36 by insurance 33 and common mode inductance 34 and a series of filter capacitors 35, is converted to 5V, utilizes
In addition isolation module 38 generates completely isolated 485 communication 20 of 5V power supplys supply all the way using using, prevent voltage fluctuation or therefore
Barrier causes microcontroller 15 and other peripheral core wafer damages.5V turns 3.3V chips output 3.3V voltages and is provided for microcontroller work
Energy, it is completely isolated with main circuit；Triode 42 in signal output 23 receives 24 output signal of microcontroller and drives relay
43, normality is normally opened, and alarm then exports normally closed signal；The coordinator microcontroller 24 is by singlechip chip 44 and peripheral circuit 46
Composition, balun antenna 45 are build-out resistor；Using built-in RF transceivers and support ultralow Low-power-consumptiodormancy dormancy microcontroller as controllable
Coremaking piece, chip interior RF radio-frequency modules coordinate peripheral balun antenna to realize wireless telecommunications, using 485 communication protocols, communication
Frequency, which is located at, exempts from the open 2.4G frequency ranges of application in ISM.
As shown in Figure 2 and Figure 4, temperature acquisition terminal 4 includes temperature acquisition microcontroller 15, temperature sensor 12, at signal
Manage circuit 13, temperature acquisition balun antenna 14, a reference source 16 and independent current source 17；The temperature sensor 12 passes through signal processing
Circuit 13 is electrically connected with temperature acquisition microcontroller 15, and temperature acquisition balun antenna 14 is mutually electrically connected with temperature acquisition microcontroller 15
It connecing, it is respectively that above-mentioned each unit provides electric power that independent current source 17 is sent into microcontroller and temperature collection circuit by reverse-connection preventing circuit,
Specifically it is made of lithium Asia battery 30, reverse-connection preventing circuit 31 and filtering capacitance of voltage regulation 32.Lithium Asia battery has outstanding anti-passivation
Effect, year self-discharge current are less than 1%, ensure that temperature acquisition terminal works normally for a long time；The temperature sensor
12 use NTC thermistor collecting temperatures, and specifically, NTC sensor 25 is composed in series with precision resistance 26, NTC biographies when work
Sensor probe is close to tested switch contact position, and temperature change causes sensor resistance to change, and two polygonal voltages also become therewith
Change, the channels microcontroller 5ADC are sent into after the processing of filter resistance capacitance 27 in signal processing circuit 13 and are handled；It is described only
Vertical power supply 17 is using the year low-down lithium Asia battery of discharge rate；Temperature acquisition microcontroller 15 is using built-in RF transceivers and supports super
For low Low-power-consumptiodormancy dormancy microcontroller as can control chip, the peripheral balun antenna of chip interior RF radio-frequency modules cooperation is wireless to realize
Communication, using 485 communication protocols, communication frequency is located at the 2.4G frequency ranges in ISM, and microcontroller 15 is according to the temperature sensing of acquisition
12 machine a reference source 16 of device calculates actual temp value, and temperature data is encrypted, and frequency is communicated in 2.4G using internal high frequency modulated
Temperature value is wirelessly transmitted to coordinator from balun antenna in section.Temperature acquisition terminal is independently-powered by lithium Asia battery, once
Assembled formation, need not any operation in use；A reference source 16 selects benchmark source chip 28 to coordinate filtering voltage regulation capacitance 29 by monolithic
The ADC outside reference pins of microcontroller 5 are sent into 5 outputs level signals voltage stabilizing of machine to point-device 1.25V.
Using the temp measuring method of Multi-point wireless temperature measuring device, include the following steps：
A. at least one temperature acquisition terminal is arranged in the high-pressure side of high-voltage electrical apparatus disconnecting switch, collecting temperature data-signal
And wirelessly it is sent to the coordinator being arranged in low-pressure side safety zone；The quantity of temperature acquisition terminal is up to eight；Temperature is adopted
Collect terminal and use ultralow Consumption, is also set on software by the slow lithium Asia battery powered of passivation effect on hardware incessantly
Power consumption intelligent control is set.When temperature acquisition terminal 4, majority in a dormant state, it wakes up into trip temperature and examines every 800ms
It surveys, when the temperature detected in real time is when compared with set temperature less than preset value, the suspend mode again of 4 terminal of temperature acquisition；Such as
When fruit is greater than the set value, temperature data is sent to coordinator immediately.If real time temperature maintains always the permission of set temperature
In variation range, then a temperature data was sent every 15 minutes；
B. after microcontroller collects wireless temperature data by balun antenna inside coordinator, decryption verification, if decryption
Success, carries out data storage and OLED is shown, if decryption failure, abandons this communication data packet.Wait for lower frame data.Work as temperature
When degrees of data is more than setting value, coordinator alarms and carries out relay signal output.485 communicating circuits built in the coordinator,
ModBus communications can be carried out with other equipment as slave, serve data to other equipment and carry out analyzing processing.Coordinator
After receiving temperature data signal, the temperature of each monitoring terminal is shown on OLED is shown, maximum temperature is filtered out, with the position
The desired temperature set compares；
C. coordinator is communicated as Modbus slaves with other equipment, temperature data signal deposit is provided, for other
Device scan calls；When receiving a certain high voltage isolator contact point temperature and reaching alarming value, coordinator output relay
Alarm signal, while register built in set accordingly；When user sets each of the temperature acquisition terminal 4 that coordinator 1 is monitored
Behind the device address of equipment, judge if the time for being more than three times setting is not received by the wireless signal that some equipment is sent
This terminal device goes offline, in OLED screen curtain and Modbus variable range output alarm signals；
D. coordinator detects input of the user in man-machine interactive interface in real time, and parses the related setting of input configuration.
Claims (4)
1. a kind of Multi-point wireless temperature measuring device, which is characterized in that including the coordinator in low-pressure side safety zone is arranged（1）Extremely
Few one is arranged on high-tension side temperature acquisition terminal（4）；The coordinator（1）With temperature acquisition terminal（4）Wirelessly it is electrically connected
It connects；In the coordinator（1）With temperature acquisition terminal（4）Between low-pressure side safety zone, work as coordinator（1）It is adopted with temperature
Collect terminal（4）Hypertelorism when both cannot meet direct communication, can be arranged therebetween most two-stages, one every grade
Router（2）For expanding communication distance；Coordinator（1）With temperature acquisition terminal（4）Mutual radio connection or coordinator
（1）Pass through router（2）With temperature acquisition terminal（4）Mutual radio connection.
2. Multi-point wireless temperature measuring device according to claim 1, which is characterized in that the coordinator（1）Eight can be carried
A temperature acquisition terminal（4）.
3. Multi-point wireless temperature measuring device according to claim 1, which is characterized in that the temperature acquisition terminal（4）, packet
Include temperature acquisition microcontroller（15）, temperature sensor（12）, signal processing circuit（13）, temperature acquisition balun antenna（14）, base
Quasi- source（16）And independent current source（17）；The temperature sensor（12）Pass through signal processing circuit（13）With temperature acquisition microcontroller
（15）Electrical connection, temperature acquisition balun antenna（14）With temperature acquisition microcontroller（15）It is electrically connected to each other, independent current source（17）Point
Electric power is not provided for above-mentioned each unit；The temperature sensor（12）Using NTC thermistor collecting temperature；The independent electrical
Source（17）Using the low-down lithium Asia battery of year discharge rate；Temperature acquisition microcontroller（15）Using built-in RF transceivers and support super
Low Low-power-consumptiodormancy dormancy microcontroller is CC2530F32, chip interior RF radio-frequency modules cooperation periphery bar as can control chip, model
Human relations antenna realizes wireless telecommunications, and using SimpleTI communication protocols, communication frequency is located at the 2.4G frequency ranges in ISM.
4. Multi-point wireless temperature measuring device according to claim 1, which is characterized in that the coordinator（1）, including coordinate
Device microcontroller（24）, isolated power supply（18）, coordinator balun antenna（21）, configuration button（19）, OLED shows（22）, it is 485 logical
Communication interface（20）It is exported with signal（23）；The configuration button（19）It is shown with OLED（22）Respectively with coordinator microcontroller
（24）Connection, 485 communication interfaces（20）With coordinator balun antenna（21）Respectively with coordinator microcontroller（24）It is electrically connected to each other,
Coordinator microcontroller（24）It is exported by signal（23）Export electric signal, isolated power supply（18）For coordinator microcontroller（24）It provides
Electric power；Isolated power supply（18）Input 24V power supplies are supplied into 485 telecommunication circuits by the way that conversion circuit is isolated, it is complete with main circuit
Full isolation；The coordinator microcontroller（24）Using built-in RF transceivers and support ultralow Low-power-consumptiodormancy dormancy microcontroller is used as can
Chip is controlled, model is CC2530F256, and chip interior RF radio-frequency modules coordinate peripheral balun antenna to realize wireless telecommunications, adopt
With 485 communication protocols, communication frequency is located at the 2.4G frequency ranges in ISM.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721905929.4U CN207881845U (en) | 2017-12-29 | 2017-12-29 | A kind of Multi-point wireless temperature measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721905929.4U CN207881845U (en) | 2017-12-29 | 2017-12-29 | A kind of Multi-point wireless temperature measuring device |
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| Publication Number | Publication Date |
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| CN207881845U true CN207881845U (en) | 2018-09-18 |
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ID=63505007
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106742A (en) * | 2017-12-29 | 2018-06-01 | 川铁电气（天津）股份有限公司 | A kind of Multi-point wireless temperature measuring device and its temp measuring method |
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2017
- 2017-12-29 CN CN201721905929.4U patent/CN207881845U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106742A (en) * | 2017-12-29 | 2018-06-01 | 川铁电气（天津）股份有限公司 | A kind of Multi-point wireless temperature measuring device and its temp measuring method |
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Effective date of registration: 20231127 Granted publication date: 20180918 |