CN207528354U - A kind of wireless temperature measuring device - Google Patents
A kind of wireless temperature measuring device Download PDFInfo
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- CN207528354U CN207528354U CN201721589831.2U CN201721589831U CN207528354U CN 207528354 U CN207528354 U CN 207528354U CN 201721589831 U CN201721589831 U CN 201721589831U CN 207528354 U CN207528354 U CN 207528354U
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Abstract
The utility model discloses a kind of wireless temperature measuring devices, and including wireless temperature monitoring unit and one group of wireless temperature-measuring terminal, the temperature data measured is transferred to wireless temperature monitoring unit to wireless temperature-measuring terminal by mode by radio communication；Wireless temperature-measuring terminal includes power module, wireless module, temperature measurement circuit；Power module includes the taking energy coil being sequentially connected electrically, rectification circuit, protection circuit, accumulator, voltage control circuit；Taking energy coil includes at least one open circuit magnetic core and the coil windings being wound on the open circuit magnetic core；After the rectified circuit rectifies of electric energy acquired in taking energy coil, through protecting circuit input accumulator storage, voltage control circuit controls accumulator to export electric energy to wireless module and temperature measurement circuit according to the voltage of accumulator；Temperature measurement circuit is used to measure temperature and the temperature data measured is transferred to wireless temperature monitoring unit by wireless module.The utility model is easy to install and use, and thermometric is accurate, securely and reliably.
Description
Technical field
The utility model is related to a kind of temperature measuring equipment more particularly to a kind of wireless temperature measuring device, for measuring
The busbar temperature of transmission line of alternation current.
Background technology
Transmission line of alternation current busbar in the case of bearing high current easily generate fever, gasification phenomena such as, so as to cause
The scaling loss of busbar, and potential risks are caused to safe distribution of electric power.Therefore it needs to introduce device for monitoring temperature, to monitor mother in time
The heat condition of row.For example, internal resistance becomes larger if busbar scaling loss, busbar temperature can continue to increase.Device for monitoring temperature at this time
User can be made to grasp the scaling loss situation of circuit breaker internal contact in time, accomplish to give warning in advance to prompt user to breaker
Busbar is safeguarded in time.
There has been the wireless temperature measuring devices that temperature measuring data is transmitted using communication, compare
The device for monitoring temperature of conventionally employed wired communication mode improves security reliability.However, existing device for monitoring temperature one
As by battery or power supply power supply take can, battery powered is there are High Temperature, and there is also connect reliable problem, and not for power supply power supply
It is easy to use.The prior art also has takes energy using current transformer, after transmission line of alternation current is put into operation, is formed around conducting wire
Alternating electromagnetic field, can be with the field energy power supply to the device in continuous collecting conducting wire surrounding space using electromagnetic field harvester, but electricity
Current transformer, which takes, can need to be inserted in busbar, install and use cumbersome.In addition the temperature measurement circuit of existing wireless temperature measuring device
It gives the temperature signal measured to microcontroller and carries out temperature data processing, then sent out data by wireless sending module by microcontroller
Next stage monitoring device is given, circuit is more complicated, and cost is caused to increase, and is unsatisfactory for the needs of current economical development.
Utility model content
The technical problem to be solved by the utility model is to overcome the shortage of prior art, one kind side of installing and using is provided
Just, thermometric is accurate, safe and reliable wireless temperature measuring device.
The utility model specifically solves above-mentioned technical problem using following technical scheme：
A kind of wireless temperature measuring device for measuring the busbar temperature of transmission line of alternation current, is monitored including wireless temperature
Unit and one group of wireless temperature-measuring terminal, the temperature data measured is transferred to wirelessly wireless temperature-measuring terminal by mode by radio communication
Temperature monitoring unit；The wireless temperature-measuring terminal includes power module, wireless module, temperature measurement circuit；The power module includes
The taking energy coil that is sequentially connected electrically, rectification circuit, protection circuit, accumulator, voltage control circuit；The taking energy coil includes
At least one open circuit magnetic core and the coil windings being wound on the open circuit magnetic core；The rectified electricity of electric energy acquired in taking energy coil
After the rectification of road, through protecting circuit input accumulator storage, voltage control energy storage electricity of the voltage control circuit according to accumulator
Road direction wireless module and temperature measurement circuit output electric energy；Temperature measurement circuit is used to measure temperature and pass through the temperature data measured wireless
Module transfer gives wireless temperature monitoring unit.
Preferably, the wireless temperature monitoring unit includes power circuit, MCU circuits, the second wireless module, communication electricity
Road and alarm output circuit, MCU circuits by the second wireless module receive wireless temperature-measuring terminal temperature data, with preset value into
Row compare, then alarmed more than default temperature value by warning circuit, can also by telecommunication circuit with outside monitoring center connect into
Row communication transmission monitoring temperature data and progress parameter setting, all kinds of parameter values are shown by display circuit；
It is further preferred that the temperature measurement circuit includes temperature probe；The temperature probe includes metal sleeve and encapsulation
Temperature sensor inside metal sleeve；The metal sleeve has blind end and open end, and the blind end is for direct
Measured object is contacted, temperature sensor is electrically connected by the openend extraction wire with external circuit.
It is made of it is further preferred that power module, wireless module, temperature measurement circuit may be contained within one case and bottom plate
In housing；The taking energy coil and temperature probe are mounted on bottom plate, and the front end of temperature probe is stretched by the through-hole on bottom plate
Go out except bottom plate；Remaining circuit is arranged at position of the upper part of the housing far from bottom plate.
Preferably, the wireless module has temperature data processing function.
Compared with prior art, the utility model has the advantages that：
The utility model collects the induction electric energy of busbar electric current using inductively technology, without battery or other confession
Electricity without busbar is inserted in, only needs that directly wireless temperature-measuring terminal is installed on tested busbar, passes through the coil sense close to busbar
Energy should be taken, it is easy to use.The utility model also further using the wireless module with temperature data processing function, does not need to be another
Outer processor, circuit is simple, at low cost.
Description of the drawings
Fig. 1 is the wireless temperature measuring device structural framing schematic diagram of the utility model；
Fig. 2 is the structure diagram of wireless temperature-measuring terminal；
Fig. 3 is wireless temperature-measuring terminal scheme of installation；
Fig. 4 is the structure diagram of taking energy coil；
Fig. 5 is the structure diagram of temperature probe.
Fig. 6 is the scheme of installation of temperature probe and bottom plate；
Fig. 7 is the schematic block circuit diagram of wireless temperature-measuring terminal；
Fig. 8 is the circuit diagram of power module；
Fig. 9 is the schematic block circuit diagram of wireless monitor unit；
Figure 10 is the workflow schematic diagram of the utility model.
Reference numeral meaning in figure is as follows：
1st, temperature probe, 2, taking energy coil, 3, circuit board, 4, housing, 11, metal sleeve, 12, temperature sensor, 111,
Blind end, 112, openend, 113, lug boss, 121, conducting wire, 21, open circuit magnetic core, 22, coil windings, 23, skeleton, 221, around
Group tap, 41, case, 42, bottom plate, 421, through-hole, 422, column, 423, column, 424, steel wire.
Specific embodiment
As shown in Figure 1, the wireless temperature measuring device of the utility model includes wireless temperature monitoring unit and one group wireless
Temperature measurement terminal, the temperature data measured is transferred to wireless temperature monitoring unit to wireless temperature-measuring terminal by mode by radio communication.
As shown in Figure 2 and Figure 3, wireless temperature-measuring terminal is installed on busbar, including the shell being made of case 41 and bottom plate 42
Body 4, temperature probe 1, taking energy coil 2, the circuit board 3 being contained in 4 cavity volume of housing, wherein, temperature probe 1 and taking energy coil 2
It is connect respectively by conducting wire with circuit board 3.Taking energy coil 2 be installed on the position for being close to busbar on bottom plate 42 and taking energy coil 2 with
Busbar current direction is vertical, temperature probe 1 be installed on bottom plate 42 and front end by through-hole on bottom plate stretch out except bottom plate with
Busbar is in close contact.
As shown in figure 4, taking energy coil 2 includes open circuit magnetic core 21 and coil windings 22.For the ease of coil winding and more
Good electric insulation, the coil windings 22 in the present embodiment are wound in open circuit magnetic by the skeleton 23 being adapted with open circuit magnetic core 21
Core 21.Coil windings 22 are formed using the uniform coiling on skeleton 23 of single enameled wire；The head and the tail tap 221 of coil windings 22 is logical
Cross the rectification circuit on conducting wire connection circuit board 3；For 22 outside of coil windings covered with insulating layer, insulating tape can be used in insulating layer
Or plastic shell.The open circuit magnetic core 21 is by multistage permalloy piece or silicon steel sheet stack into shape is column type, according to need
Seek the column length and width for determining to build up.In order to guide more magnetic lines of force as far as possible, raising takes energy effect, and column type magnetic core both ends use
Certain technique will alloy sheet or silicon steel sheet be bent into such as H-type.The present embodiment preferentially uses special construction as shown in Figure 4,
It is made of rod-shaped magnetic core and the two panels sheet magnetic core for being symmetrically disposed on rod-shaped magnetic core both ends, the plane of sheet magnetic core is perpendicular to bar
Shape magnetic core 211.Permalloy can be used for the open circuit magnetic core of the structure or silicon steel sheet is integrally formed or welding obtains.Open circuit magnetic core 21
In rod-shaped magnetic core can be flat pattern can also be cylinder；The junction of rod-shaped magnetic core and sheet magnetic core can be located at piece
The center of shape magnetic core can also be located at the marginal position of sheet magnetic core；Also a kind of scheme is without using skeleton 23, is first existed
Insulating materials is wound on rod-shaped magnetic core or coating insulated paint, coil windings 22 are uniformly wound on rod-shaped magnetic core again.Rod-shaped magnetic core
And the combination of sheet magnetic core is close as possible, by the sheet magnetic core guiding magnetic line of force as much as possible, in the case where flux density limits
The rod-shaped magnetic core of convolute coil is thin as possible, i.e., perimeter is small as possible, and the resistance of coil windings is small as possible, and the magnetic core of taking energy coil can be more
A serial or parallel connection couples energy to improve magnetic induction.Taking energy coil 2 is preferably close to the position installation of busbar, and magnetic core 21 of opening a way
In rod-shaped magnetic core it is vertical with the current direction in busbar.
As shown in figure 5, temperature probe 1 is set to inside housing 4, including metal sleeve 11 and temperature sensor 12（In figure
It is not shown）.Metal sleeve 11 uses cylindrical, copper sleeve in the present embodiment, with blind end 111 and openend 112, closing
End 111 is set as being in direct contact tested busbar surface, and openend 112 sets fluted；It is additionally provided among metal sleeve 11 convex
Play portion 113；It is packaged in heat-conducting glue in metal sleeve 11 by the temperature sensor 12 in the present embodiment using thermistor
Portion, and pass through 112 extraction wire 121 of openend and connect to 11 outside of metal sleeve with the signal conditioning circuit on circuit board 3.
Fig. 2, Fig. 6 are please referred to, through-hole 421 is offered on bottom plate 42, the both sides of through-hole 421 are respectively arranged with column 422
With column 423, the top of column 422 and column 423 is provided with steel wire 424.The blind end 111 of metal sleeve 11 and through-hole 421
It is oppositely arranged, and passes through through-hole 421 and be in direct contact with tested busbar surface；Steel wire 424 has certain elasticity, is disposed at survey
In the groove of 1 openend 112 of temperature probe, so as to which temperature probe 1 be made to be in close contact with tested busbar；The metallic sheath of temperature probe 1
The outer diameter in 11 intermediate projections portions 113 of cylinder is more than the diameter of through-hole 421, so as to which the main part for making temperature probe 1 is limited in housing 4
It is internal.
Referring to Fig. 7, Fig. 8, rectification circuit, protection circuit, accumulator, voltage control circuit are provided on circuit board 3,
Wireless module and temperature measurement circuit, rectification circuit, protection circuit, accumulator, voltage control circuit and taking energy coil are configured to it
His consuming parts provide the power module of electric energy.The circuit of power module in the present embodiment is as shown in figure 8, it is included by opening a way
What the taking energy coil that magnetic core and coil windings 22 are formed, the rectification circuit that rectifier bridge D1 is formed, voltage-stabiliser tube or TVS pipe FV1 were formed
Protection circuit, the accumulator that storage capacitor C1 is formed, resistance R1, R2, R3, R4, capacitance C2, C3, C4, C5, comparable chip N1,
The voltage control circuit that power conversion chip N2 is formed.
Wireless temperature-measuring terminal is mounted on busbar, and when busbar flows through power current, taking energy coil collects energy of electromagnetic field warp
Rectifier circuit rectifies are into after direct current, through circuit is protected to be supplied to accumulator energy storage, by the voltage of accumulator storage through electricity
Pressure control circuit is supplied to late-class circuit after direct current is converted into suitable voltage.Signal conditioning circuit above circuit board 3
It is connect with the extraction wire 121 of temperature probe 1, passes through wireless mould after the temperature signal that temperature sensor 12 measures is handled
Block is sent to wireless temperature monitoring unit；Wireless module in the present embodiment is integrated with wireless communication and handles work(with temperature data
Can, therefore do not need to other processor and carry out data processing, circuit is simpler.
The magnetic core 21 of taking energy coil 2 is set as open circuit magnetic by the utility model in order to facilitate the installation of wireless temperature-measuring terminal
The mode that core, i.e. taking energy coil 2 employ weak coupling collects the electric energy that busbar electric current induces, this takes energy mode to be unable to maintain that work(
Can circuit continuous work, therefore wireless module should use the low-consumption wireless communication technology as far as possible, such as ZigBee, wifi,
The technologies such as bluetooth.And wireless temperature-measuring terminal can be arranged to intermittent operation mode.While in order to improve energy as possible
Taking energy coil 2 is preferably positioned close to the position of the bottom plate 42 by collection efficiency.
In order to solve the starting problem that weak coupling takes wireless temperature-measuring terminal under energy mode, certain electricity is flowed through when being tested on busbar
During stream, the electric energy induced in taking energy coil 2 is stored by accumulator, and the accumulator in the present embodiment is by storage capacitor
It forms, the output of power module is arranged respectively to start and close two states according to voltage and closing voltage is started, by comparing
Chip N1 provides two kinds of reference voltages, starts voltage and is more than closing voltage.When the voltage on storage capacitor rises above startup
It is temperature measurement circuit and wireless module energy circuit is taken to convert voltage to suitable voltage by power conversion chip N2 during voltage
Power supply；When the voltage on storage capacitor, which drops below, closes voltage, energy circuit is taken to stop as temperature measurement circuit and wireless module
Power supply.
Fig. 2, Fig. 3 are please referred to, mounting hole 411 and 412 is additionally provided on case 41, temperature probe 1 is mounted on bottom plate 42
On, taking energy coil 2 is pacified according to the principle vertical with the busbar current direction of wireless temperature-measuring terminal installed position always of magnetic core 21
Loaded on bottom plate 42.Since the electronic component on wiring board 3 is to high temperature sensitive, wiring board 3 is arranged in taking energy coil 2
Bottom plate 42 and case 41 are passed through ultrasound after installation is complete by position of the face far from bottom plate 42, the internal structure of wireless temperature-measuring terminal
Wave welding procedure or riveting process are combined, and the wireless temperature-measuring terminal of composition is as shown in Figure 3.When wireless temperature-measuring terminal is installed
Wireless temperature-measuring terminal is directly anchored to tapping screw on busbar by the mounting hole 411 and 412 on housing 4, it is more convenient.
Referring to Fig. 9, Figure 10, the wireless temperature monitoring unit in the present embodiment is installed on cabinet door for power distributing cabinet, including
Power circuit, MCU circuits, wireless module, telecommunication circuit, alert output circuit and display circuit, MCU circuits are connect by wireless module
The temperature data of wireless temperature-measuring terminal is received, is compared with preset value, is then alarmed by warning circuit more than default temperature value, may be used also
Communication transmission monitoring temperature data and progress parameter setting are carried out to be connect by telecommunication circuit with external monitoring center, is passed through
Display circuit shows all kinds of parameter values；The communication technology being connect used in wireless temperature monitoring unit with monitoring center is preferred
RS485。
Claims (5)
1. a kind of wireless temperature measuring device for measuring the busbar temperature of transmission line of alternation current, monitors single including wireless temperature
Member and one group of wireless temperature-measuring terminal, the temperature data measured is transferred to wireless temperature to wireless temperature-measuring terminal by mode by radio communication
Spend monitoring unit；It is characterized in that, the wireless temperature-measuring terminal includes power module, wireless module, temperature measurement circuit；The energy supply
Module includes the taking energy coil being sequentially connected electrically, rectification circuit, protection circuit, accumulator, voltage control circuit；It is described to take energy
Coil includes at least one open circuit magnetic core and the coil windings being wound on the open circuit magnetic core；Electric energy acquired in taking energy coil
After rectified circuit rectifies, through protecting circuit input accumulator storage, voltage control of the voltage control circuit according to accumulator
Accumulator processed exports electric energy to wireless module and temperature measurement circuit；Temperature measurement circuit is used to measure temperature and the temperature data that will be measured
Wireless temperature monitoring unit is transferred to by wireless module.
2. device as described in claim 1, it is characterised in that：The wireless temperature monitoring unit includes power circuit, MCU electricity
Road, the second wireless module, telecommunication circuit and alarm output circuit, MCU circuits receive wireless temperature measurement end by the second wireless module
The temperature data at end, is compared with preset value, is then alarmed more than default temperature value by warning circuit, can also pass through the electricity that communicates
Road is connect with external monitoring center to carry out communication transmission monitoring temperature data and carries out parameter setting, is shown by display circuit
All kinds of parameter values.
3. device as described in claim 1, which is characterized in that the temperature measurement circuit includes temperature probe；The temperature probe packet
Include metal sleeve and the temperature sensor being packaged in inside metal sleeve；The metal sleeve has blind end and open end, institute
Blind end is stated for being in direct contact measured object, temperature sensor is electrically connected by the openend extraction wire with external circuit.
4. device as claimed in claim 3, which is characterized in that power module, wireless module, temperature measurement circuit may be contained within one by
In the housing that case and bottom plate are formed；The taking energy coil and temperature probe are mounted on bottom plate, and the front end of temperature probe leads to
The through-hole on bottom plate is crossed to stretch out except bottom plate；Remaining circuit is arranged at position of the upper part of the housing far from bottom plate.
5. device as described in claim 1, which is characterized in that the wireless module has temperature data processing function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589831.2U CN207528354U (en) | 2017-11-24 | 2017-11-24 | A kind of wireless temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721589831.2U CN207528354U (en) | 2017-11-24 | 2017-11-24 | A kind of wireless temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207528354U true CN207528354U (en) | 2018-06-22 |
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ID=62580058
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721589831.2U Active CN207528354U (en) | 2017-11-24 | 2017-11-24 | A kind of wireless temperature measuring device |
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| CN (1) | CN207528354U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824216A (en) * | 2021-08-10 | 2021-12-21 | 浙江华云电力工程设计咨询有限公司 | Paste formula magnetic field and get ability module |
| CN113852150A (en) * | 2021-09-01 | 2021-12-28 | 无锡佳测科技有限公司 | Self-power-on control system and method for online temperature measuring device |
| CN113950616A (en) * | 2019-10-10 | 2022-01-18 | 株式会社芝浦电子 | Temperature sensor and motor |
| CN113950616B (en) * | 2019-10-10 | 2024-05-10 | 株式会社芝浦电子 | Temperature sensor and motor |
-
2017
- 2017-11-24 CN CN201721589831.2U patent/CN207528354U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113950616A (en) * | 2019-10-10 | 2022-01-18 | 株式会社芝浦电子 | Temperature sensor and motor |
| CN113950616B (en) * | 2019-10-10 | 2024-05-10 | 株式会社芝浦电子 | Temperature sensor and motor |
| CN113824216A (en) * | 2021-08-10 | 2021-12-21 | 浙江华云电力工程设计咨询有限公司 | Paste formula magnetic field and get ability module |
| CN113852150A (en) * | 2021-09-01 | 2021-12-28 | 无锡佳测科技有限公司 | Self-power-on control system and method for online temperature measuring device |
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