CN207317952U - A kind of power equipment surface temperature monitoring device - Google Patents
A kind of power equipment surface temperature monitoring device Download PDFInfo
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- CN207317952U CN207317952U CN201721436421.4U CN201721436421U CN207317952U CN 207317952 U CN207317952 U CN 207317952U CN 201721436421 U CN201721436421 U CN 201721436421U CN 207317952 U CN207317952 U CN 207317952U
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Abstract
The utility model discloses a kind of power equipment surface temperature monitoring device, including temperature sensing assembly, router, coordinator and monitoring host；It is characterized in that：Temperature sensing assembly further includes semi-conductor thermo-electric generation module, DC DC booster circuits modules and energy-storage travelling wave tube；Wherein, semi-conductor thermo-electric generation module is the power generation sheet that thermo-electric generation is carried out based on Seebeck effect, the huyashi-chuuka (cold chinese-style noodles) of semi-conductor thermo-electric generation module and hot face are connected by cable with the input terminal of DC DC booster circuit modules respectively, the output terminal of DC DC booster circuit modules is connected by cable with energy-storage travelling wave tube, and energy-storage travelling wave tube is connected with the power supply interface of wireless internet of things module by cable and is used for wireless internet of things module and temperature detection sensor power supply.The power equipment surface temperature monitoring device of the utility model have it is rational in infrastructure, use the advantages of more convenient.
Description
Technical field
The utility model belongs to power equipment monitoring device field, and in particular to a kind of power equipment surface temperature monitoring dress
Put.
Background technology
Nowadays, electricity is inseparable with the life production of people.Electricity is conveyed by power grid, and power grid is by various electricity
Power facility is formed with power equipment, and the safe operation of power equipment directly decides the stable operation of power grid.
When power equipment breaks down, it can rapidly cause conveying electric current and the change of surface temperature of the power equipment
Change（For example, during short circuit, the transmission current of power equipment can increase rapidly, and surface temperature can also raise immediately）.So to electric power
The conveying electric current and temperature of equipment are monitored, it becomes possible to are monitored and better assured that the security of Operation of Electric Systems and reliable
Property.The technical program only considers the monitoring to power equipment surface temperature.
At present, the technical solution that notification number is CN202008407U discloses that " a kind of Digital Electric device temperature exists
Line detects and monitoring device " include：Digital temperature sensor, microcontroller and radio receiving transmitting module, relay router, terminal route
Device, interface circuit and PC machine；Digital temperature sensor gathers power equipment temperature signal, and the temperature signal collected is changed
Into voltage signal；Digital signal is being converted into by A/D and is being read by microcontroller and radio receiving transmitting module；Microcontroller and wireless receipts
Hair module processing is identified in the digital signal read, be converted into the corresponding digital signal of temperature, finally again by monolithic
Machine and radio receiving transmitting module are transmitted to relay router, and the corresponding digital signal of temperature is wirelessly transmitted to end by relay router
Hold router；End router is connected by RS232 ports, interface circuit with PC machine, is realized to the real-time of power equipment temperature
Numerical monitor and fault location.
But above-mentioned " a kind of Digital Electric device temperature on-line checking and monitoring device ", which still has needs, arranges power supply
Circuit, uses more troublesome shortcoming, is specially：
Because above-mentioned " microcontroller and radio receiving transmitting module " needs to be powered by supply line.
So when using above-mentioned " a kind of Digital Electric device temperature on-line checking and monitoring device " come to one or more
When the temperature of platform power equipment is monitored, it is each " microcontroller and wireless receiving and dispatching mould just to have to using preceding arrangement at the scene
The supply line of block " power supply, can thus increase the consumptive material and the workload of wiring and wiring of service cable, cause a kind of " number
The detection of word power equipment temperature online and monitoring device " uses more cumbersome.
Based on this, applicant considers that design one kind uses more easily power equipment surface temperature monitoring device.
The content of the invention
In view of the above shortcomings of the prior art, technical problem to be solved in the utility model is：How to provide one kind makes
Use more easily power equipment surface temperature monitoring device.
In order to solve the above-mentioned technical problem, the utility model employs following technical solution：
A kind of power equipment surface temperature monitoring device, including temperature sensing assembly, router, coordinator and monitoring master
Machine；Wherein, the temperature sensing assembly is for the temperature measuring unit installed in each power equipment surface, the temperature detection group
Part includes temperature detection sensor and the wireless internet of things module being electrical connected, the wireless internet of things module and the router
It is connected by wireless signal, is connected between the router and coordinator by wireless signal, the coordinator and monitoring host
Between be connected by signal transmission cable；It is characterized in that：
The temperature sensing assembly further includes semi-conductor thermo-electric generation module, DC-DC booster circuit module and energy-storage travelling wave tube；
Wherein, the semi-conductor thermo-electric generation module be based on Seebeck effect carry out thermo-electric generation power generation sheet, the semiconductor temperature
The huyashi-chuuka (cold chinese-style noodles) of poor electricity generation module and hot face are connected by cable with the input terminal of the DC-DC booster circuit module respectively, described
The output terminal of DC-DC booster circuit module is connected by cable with the energy-storage travelling wave tube, the energy-storage travelling wave tube by cable with
The power supply interface of the wireless internet of things module is connected and is used for the wireless internet of things module and temperature detection sensor
Power supply.
The power equipment surface temperature monitoring device of the utility model is boosted using semi-conductor thermo-electric generation module, DC-DC
Circuit module and energy-storage travelling wave tube come with temperature detection sensor and wireless internet of things module composition temperature sensing assembly, such one
Come, you can use semi-conductor thermo-electric generation module, DC-DC booster circuit module and energy-storage travelling wave tube come for temperature detection sensor and
Wireless internet of things module, therefore when in use, temperature sensing assembly need to be only fixedly mounted on to the surface of each power equipment,
It is more convenient to use, and eliminates the work for wireless internet of things module and the independent arrangement power cord of temperature detection sensor power supply
Make, improve installation and service efficiency.
Wireless internet of things module in the power equipment surface temperature monitoring device of the utility model, router, coordinator and
Monitoring host is communicated using the Principle of Communication of ZigBee-network, ZigBee-network schematic diagram as shown in figure 4, its by coordinating
Device, router and terminal node（Each temperature sensing assembly）Form.Wherein, terminal node（Each temperature sensing assembly）Often adopt
As soon as collect time power equipment surface temperature, by the way that temperature data is transmitted router based on the wireless internet of things of ZigBee, route
Device is responsible for collecting the temperature data that neighbouring terminal node collects, and data are transmitted to coordinator, and coordinator is responsible for opening
Move whole ZigBee-network and obtain the data that router is collected into, then monitoring host is sent the data to by wired mode
（Computer）.
As a preferred embodiment, the temperature sensing assembly further includes casing, is installed with the casing described
Temperature detection sensor, wireless internet of things module, semi-conductor thermo-electric generation module, DC-DC booster circuit module and energy-storage travelling wave tube,
And the casing is that the surface of power equipment, and the hot face of the semi-conductor thermo-electric generation module are fixedly mounted on by connector
It is bonded and is connected with the surface of power equipment.
After temperature sensing assembly further includes casing, the installation for each part of being not only more convenient for is fixed, and is also convenient for temperature
Detection components are quick installed at the surface of power equipment, and it is convenient with using further to lift temperature sensing assembly manufacture installation
Property.
As a preferred embodiment, the semi-conductor thermo-electric generation module is the connected polylith of concatenation.
So, the generated energy of semi-conductor thermo-electric generation module can be effectively lifted, preferably ensures wireless Internet of Things
Net module and the reliability of temperature detection sensor power supply.And when in use, preferred semiconductor temperature-difference power generation module is four pieces.
As a preferred embodiment, the semi-conductor thermo-electric generation module is the power generation sheet of model XH-F241A1117.
Using the semi-conductor thermo-electric generation module of model XH-F241A1117（Also referred to as：Power generation sheet）Power generation performance is more
It is good, and with power generation sheet huyashi-chuuka (cold chinese-style noodles)（One side away from power equipment）With hot face（The one side of neighbouring power equipment）The temperature difference increases,
The output power increase of the power generation sheet is more notable.
As a preferred embodiment, the huyashi-chuuka (cold chinese-style noodles) fitting of the semi-conductor thermo-electric generation module is provided with fin inserting type heat radiator.
Above-mentioned fin inserting type heat radiator can be used by heat conductive silica gel bonding installed in the huyashi-chuuka (cold chinese-style noodles) of semi-conductor thermo-electric generation module
Mode.And after above-mentioned fin inserting type heat radiator is set, it can effectively ensure that semi-conductor thermo-electric generation module coldface temperature is lower and permanent
It is fixed so that the hot face of semi-conductor thermo-electric generation module and the temperature difference bigger of huyashi-chuuka (cold chinese-style noodles), improve generated output, better assure that power generation
Persistence and reliability.
As a preferred embodiment, the wireless internet of things module uses the chip of model CC2530.
Since the power of semi-conductor thermo-electric generation module output is milliwatt, include DC-DC boosting electricity except reducing
The micropower energy collection circuit self-energy loss of road module, is improved beyond efficiency of energy collection；Temperature detection should also be reduced
Sensor and the power consumption of wireless internet of things module.
Wireless internet of things module uses the chip of model CC2530（CC2530 chips are based on ZigBee communication agreement）,
CC2530 has been internally integrated the kernel and RF radio frequency chips of 8051 microcontrollers, memory and programmable I/0 pins etc..
The flow chart of CC2530 is as shown in Figure 10（The programming of CC2530 is the prior art with application, is not gone to live in the household of one's in-laws on getting married herein
State）, after the completion of terminal node initialization, will attempt to add ZigBee-network, after being successfully joined network, CC2530 chips will be with
DS18B20 communicates and obtains equipment surface temperature, enters dormancy after temperature data is sent to router.Determine when reaching dormancy
When, chip exits sleep mode and carries out temperature acquisition next time and, with sending, so moves in circles and realize temperature monitoring.In addition,
Dormancy time is rationally set, CC2530 can be made to save electric energy to greatest extent on the premise of function is completed.
As a preferred embodiment, the temperature detection sensor is the temperature sensor of model DS18B20.
DS18B20 has that easy-to-connect, agreement are simple, low in energy consumption as temperature sensor, and operating temperature range is wide,
The features such as collecting temperature precision is higher.After CC2530 gets the data of temperature sensor, the RF radio-frequency modules built in it lead to
Cross antenna and transmit data to router.
Micropower energy collection circuit is further included as a preferred embodiment, and the micropower energy collection circuit includes
DC-DC booster circuit module, the DC-DC booster circuit module include the boosting inverter chip of model TPS61200, model
There is pin L, pin VIN, pin PS, pin PS, pin UVLO, pin EN, pin for the boosting inverter chip of TPS61200
VOUT, pin PGND, pin VAUX, pin FB and pin GND；
The micropower energy collection circuit further includes filter capacitor c1, filter capacitor c2, filter capacitor c3, filter capacitor
C4, filter capacitor c5, filter capacitor c6, boost inductance L1, input divider resistance R1, input divider resistance R2, input are used
Divider resistance R3, output partial pressure R4, output partial pressure R5, adjustable resistance R6, input divider resistance R7, input partial pressure electricity
Hinder R8, energy pre-storage capacitance charging C8 and buffering electricity consumption and hold C7；
The micropower energy collection circuit further includes the small-power that conducting threshold voltage least absolute value is 0.7V
PMOS tube and NMOS tube；
Pin L is connected with one end of boost inductance L1, and one end of boost inductance L1 forms the first common terminal；
The both ends of energy pre-storage capacitance charging C8 are serially connected between the first common terminal and GND ends；
Two fixing ends of adjustable resistance R6 are serially connected between the first common terminal and GND ends, the cunning of adjustable resistance R6
Arm is connected with the g poles of NMOS tube, and the s poles of NMOS tube are connected with GND ends, and divider resistance R7 is used in d poles and the input of NMOS tube
One end be connected, input is connected with the other end of divider resistance R7 with the first common terminal；
The g poles of PMOS tube are extremely connected with the d of NMOS tube, and the d poles of PMOS tube are connected with the first common terminal, PMOS tube
S poles are connected with pin EN, and buffering capacitance C7 and input divider resistance R8 are parallel between pin EN and GND ends；
Filter capacitor c1 is serially connected between the first common terminal and GND ends；
Input is serially connected between the first common terminal and pin VIN with divider resistance R1；
Between input is serially connected in pin VIN and GND ends with divider resistance R2 and input with divider resistance R3, and pin UVLO
It is connected with input with divider resistance R2 and input with the circuit between divider resistance R3；
Filter capacitor c2 is serially connected between pin VIN and GND ends；
Pin PS is connected with pin VIN；
Pin PGND and pin GND are grounded；
Filter capacitor c3 is serially connected between pin VAUX and GND ends；
Filter capacitor c4 is serially connected between pin FB and pin VOUT；
Between output is serially connected in pin VOUT and GND ends with partial pressure R4 and output with partial pressure R5, and export with partial pressure R4 and
Output is connected with the circuit between partial pressure R5 is concatenated with pin FB；
Filter capacitor c5 and filter capacitor c6 is connected in parallel between pin VOUT and GND ends.
Above-mentioned micropower energy collection circuit can provide stabilization for temperature detection sensor and wireless internet of things module can
The power supply leaned on.
As a preferred embodiment, the output terminal of the boosting inverter chip is parallel with one and is used to sense to temperature detection
The super capacitor of device and wireless internet of things module for power supply.
Above-mentioned super capacitor can be as the energy storage device after the boosting of boosting inverter chip, and can be that temperature detection senses
Device and wireless internet of things module provide more structurally sound power supply.
As a preferred embodiment, divider resistance R7 is more than or equal to 10k Ω for 10k Ω and divider resistance R8.
For control circuit, divider resistance R7, R8 selected as 10k Ω, so both can guarantee that the scope in setting magnitude of voltage
Interior metal-oxide-semiconductor has larger conducting resistance Ron with Vgs change rates, but can guarantee that in metal-oxide-semiconductor turn on process divider resistance and
Metal-oxide-semiconductor energy loss is small, and divider resistance R8 should select larger to reduce energy loss as far as possible, may be selected to be 100k Ω.
Brief description of the drawings
Fig. 1 is the structure diagram of the temperature sensing assembly in the power equipment surface temperature monitoring device of the utility model.
Fig. 2 is the structural representation of the temperature sensing assembly in the power equipment surface temperature monitoring device of the utility model
Figure.
Fig. 3 is the top view of the temperature sensing assembly in the power equipment surface temperature monitoring device of the utility model.
Fig. 4 is the Principle of Communication schematic diagram of the power equipment surface temperature monitoring device of the utility model.
Fig. 5 is open-circuit voltage and short circuit electricity of the different semi-conductor thermo-electric generation module of three kinds of models under the different temperature difference
Stream.
Fig. 6 is internal resistance and short-circuit power under the different semi-conductor thermo-electric generation module difference temperature difference of three kinds of models.
Fig. 7 for 25 DEG C of the temperature difference when different output power of the semi-conductor thermo-electric generation module with different loads of three kinds of models.
Fig. 8 for 40 DEG C of the temperature difference when different output power of the semi-conductor thermo-electric generation module with different loads of three kinds of models.
Fig. 9 is the principle of the micropower energy collection circuit in the power equipment surface temperature monitoring device of the utility model
Figure.
Figure 10 is the flow chart of CC2530.
In figure mark for：
1 semi-conductor thermo-electric generation module；2 heat conductive pads；3 heat conductive silica gels；4 casings；5 radiators；6 micropower collection of energy electricity
Road；7 wireless internet of things modules；8 antennas.
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.Wherein, for description using it is all as above,
Under, the exemplary term such as left and right, it is therefore intended that help reader to understand, without being intended for limiting.
The first embodiment, as shown in Figures 1 to 4：
A kind of power equipment surface temperature monitoring device, including temperature sensing assembly, router, coordinator and monitoring master
Machine；Wherein, the temperature sensing assembly is for the temperature measuring unit installed in each power equipment surface, the temperature detection group
Part includes temperature detection sensor and the wireless internet of things module 7 being electrical connected, the wireless internet of things module and the route
Device is connected by wireless signal, is connected between the router and coordinator by wireless signal, and the coordinator is led with monitoring
It is connected between machine by signal transmission cable；
The temperature sensing assembly further includes semi-conductor thermo-electric generation module 1, DC-DC booster circuit module and energy storage member
Part；Wherein, the semi-conductor thermo-electric generation module be based on Seebeck effect carry out thermo-electric generation power generation sheet, the semiconductor
The huyashi-chuuka (cold chinese-style noodles) of temperature-difference power generation module and hot face are connected by cable with the input terminal of the DC-DC booster circuit module respectively, institute
The output terminal for stating DC-DC booster circuit module is connected by cable with the energy-storage travelling wave tube, and the energy-storage travelling wave tube passes through cable
It is connected with the power supply interface of the wireless internet of things module and is used for the wireless internet of things module and temperature detection sensing
Device is powered.
The power equipment surface temperature monitoring device of the present embodiment is using semi-conductor thermo-electric generation module, DC-DC boosting electricity
Road module and energy-storage travelling wave tube to form temperature sensing assembly with temperature detection sensor and wireless internet of things module, so,
Semi-conductor thermo-electric generation module, DC-DC booster circuit module and energy-storage travelling wave tube can be used come for temperature detection sensor and nothing
Line Internet of Things module, therefore when in use, temperature sensing assembly need to be only fixedly mounted on to the surface of each power equipment, made
It is more convenient to use, and eliminates the work for wireless internet of things module and the independent arrangement power cord of temperature detection sensor power supply
Make, improve installation and service efficiency.
Wireless internet of things module, router, coordinator and prison in the power equipment surface temperature monitoring device of the present embodiment
Host is surveyed to communicate using the Principle of Communication of ZigBee-network, ZigBee-network schematic diagram as shown in figure 4, its by coordinator,
Router and terminal node（Each temperature sensing assembly）Form.Wherein, terminal node（Each temperature sensing assembly）Often gather
As soon as time power equipment surface temperature, by the way that temperature data is transmitted router, router based on the wireless internet of things of ZigBee
It is responsible for collecting the temperature data that nearby terminal node collects, and data is transmitted and are responsible for startup to coordinator, coordinator
Whole ZigBee-network simultaneously obtains the data that router is collected into, then sends the data to monitoring host by wired mode
（Computer）.
Wherein, the temperature sensing assembly further includes casing 4, and the temperature detection sensing is installed with the casing
Device, wireless internet of things module, semi-conductor thermo-electric generation module, DC-DC booster circuit module and energy-storage travelling wave tube, and the casing is
It is fixedly mounted on the surface of power equipment by connector, and the hot face of the semi-conductor thermo-electric generation module and power equipment
Surface fitting is connected.
After temperature sensing assembly further includes casing, the installation for each part of being not only more convenient for is fixed, and is also convenient for temperature
Detection components are quick installed at the surface of power equipment, and it is convenient with using further to lift temperature sensing assembly manufacture installation
Property.
Wherein, the semi-conductor thermo-electric generation module is the connected polylith of concatenation.
So, the generated energy of semi-conductor thermo-electric generation module can be effectively lifted, preferably ensures wireless Internet of Things
Net module and the reliability of temperature detection sensor power supply.And when in use, preferred semiconductor temperature-difference power generation module is four pieces.
Wherein, the semi-conductor thermo-electric generation module is the power generation sheet of model XH-F241A1117.
Using the semi-conductor thermo-electric generation module of model XH-F241A1117（Also referred to as：Power generation sheet）Power generation performance is more
It is good, and with power generation sheet huyashi-chuuka (cold chinese-style noodles)（One side away from power equipment）With hot face（The one side of neighbouring power equipment）The temperature difference increases,
The output power increase of the power generation sheet is more notable.
Wherein, the huyashi-chuuka (cold chinese-style noodles) fitting of the semi-conductor thermo-electric generation module is provided with fin inserting type heat radiator 5.
Above-mentioned fin inserting type heat radiator can be used by the bonding of heat conductive silica gel 3 installed in the huyashi-chuuka (cold chinese-style noodles) of semi-conductor thermo-electric generation module
Mode.And after above-mentioned fin inserting type heat radiator is set, it can effectively ensure that semi-conductor thermo-electric generation module coldface temperature is lower and permanent
It is fixed so that the hot face of semi-conductor thermo-electric generation module and the temperature difference bigger of huyashi-chuuka (cold chinese-style noodles), improve generated output, better assure that power generation
Persistence and reliability.
Wherein, the wireless internet of things module uses the chip of model CC2530.
Since the power of semi-conductor thermo-electric generation module output is milliwatt, include DC-DC boosting electricity except reducing
The micropower energy collection circuit self-energy loss of road module, is improved beyond efficiency of energy collection；Temperature detection should also be reduced
Sensor and the power consumption of wireless internet of things module.
Wireless internet of things module uses the chip of model CC2530（CC2530 chips are based on ZigBee communication agreement）,
CC2530 has been internally integrated the kernel and RF radio frequency chips of 8051 microcontrollers, memory and programmable I/0 pins etc..
The flow chart of CC2530 is as shown in Figure 10（The programming of CC2530 is the prior art with application, is not gone to live in the household of one's in-laws on getting married herein
State）, after the completion of terminal node initialization, will attempt to add ZigBee-network, after being successfully joined network, CC2530 chips will be with
DS18B20 communicates and obtains equipment surface temperature, enters dormancy after temperature data is sent to router.Determine when reaching dormancy
When, chip exits sleep mode and carries out temperature acquisition next time and, with sending, so moves in circles and realize temperature monitoring.In addition,
Dormancy time is rationally set, CC2530 can be made to save electric energy to greatest extent on the premise of function is completed.
Wherein, the temperature detection sensor is the temperature sensor of model DS18B20.
DS18B20 has that easy-to-connect, agreement are simple, low in energy consumption as temperature sensor, and operating temperature range is wide,
The features such as collecting temperature precision is higher.After CC2530 gets the data of temperature sensor, the RF radio-frequency modules built in it lead to
Cross antenna and transmit data to router.
Wherein, power equipment surface temperature monitoring device further includes micropower energy collection circuit, the micropower energy
Collecting circuit includes DC-DC booster circuit module, and the boosting that the DC-DC booster circuit module includes model TPS61200 becomes
Change chip, the boosting inverter chip of model TPS61200 have pin L, pin VIN, pin PS, pin PS, pin UVLO,
Pin EN, pin VOUT, pin PGND, pin VAUX, pin FB and pin GND；
The micropower energy collection circuit further includes filter capacitor c1, filter capacitor c2, filter capacitor c3, filter capacitor
C4, filter capacitor c5, filter capacitor c6, boost inductance L1, input divider resistance R1, input divider resistance R2, input are used
Divider resistance R3, output partial pressure R4, output partial pressure R5, adjustable resistance R6, input divider resistance R7, input partial pressure electricity
Hinder R8, energy pre-storage capacitance charging C8 and buffering electricity consumption and hold C7；
The micropower energy collection circuit further includes the small-power that conducting threshold voltage least absolute value is 0.7V
PMOS tube and NMOS tube；
Pin L is connected with one end of boost inductance L1, and one end of boost inductance L1 forms the first common terminal；
The both ends of energy pre-storage capacitance charging C8 are serially connected between the first common terminal and GND ends；
Two fixing ends of adjustable resistance R6 are serially connected between the first common terminal and GND ends, the cunning of adjustable resistance R6
Arm is connected with the g poles of NMOS tube, and the s poles of NMOS tube are connected with GND ends, and divider resistance R7 is used in d poles and the input of NMOS tube
One end be connected, input is connected with the other end of divider resistance R7 with the first common terminal；
The g poles of PMOS tube are extremely connected with the d of NMOS tube, and the d poles of PMOS tube are connected with the first common terminal, PMOS tube
S poles are connected with pin EN, and buffering capacitance C7 and input divider resistance R8 are parallel between pin EN and GND ends；
Filter capacitor c1 is serially connected between the first common terminal and GND ends；
Input is serially connected between the first common terminal and pin VIN with divider resistance R1；
Between input is serially connected in pin VIN and GND ends with divider resistance R2 and input with divider resistance R3, and pin UVLO
It is connected with input with divider resistance R2 and input with the circuit between divider resistance R3；
Filter capacitor c2 is serially connected between pin VIN and GND ends；
Pin PS is connected with pin VIN；
Pin PGND and pin GND are grounded；
Filter capacitor c3 is serially connected between pin VAUX and GND ends；
Filter capacitor c4 is serially connected between pin FB and pin VOUT；
Between output is serially connected in pin VOUT and GND ends with partial pressure R4 and output with partial pressure R5, and export with partial pressure R4 and
Output is connected with the circuit between partial pressure R5 is concatenated with pin FB；
Filter capacitor c5 and filter capacitor c6 is connected in parallel between pin VOUT and GND ends.
Above-mentioned micropower energy collection circuit can provide stabilization for temperature detection sensor and wireless internet of things module can
The power supply leaned on.
During implementation, the field-effect tube of model AO3401 can be selected in PMOS tube；NMOS tube can be selected model AO3400's
Field-effect tube.
Because the series connection in the case that the temperature difference is larger is so that the open-circuit voltage of semi-conductor thermo-electric generation module is enough to reach
To the requirement of temperature detection sensor and wireless internet of things module for power supply voltage, but since its own is there are larger internal resistance,
Cause its carrying load ability limited.
Therefore, if under conditions of Low Temperature Difference, semi-conductor thermo-electric generation module can cause it direct at three aspects
Reliable and stable power supply is provided for temperature detection and wireless internet of things module：
First, the amplitude of output voltage is too low；
Second, the fluctuation of the temperature difference can cause output voltage unstable；
Third, its carrying load ability is limited be subject to self-resistance.
So above-mentioned micropower energy collection circuit is used to be provided for temperature detection sensor and wireless internet of things module
Reliable and stable power supply, specific implementation principle are：
Above-mentioned micropower energy collection circuit includes the control circuit of boost chip Enable Pin, and the control circuit is by three-level
Bleeder circuit cascade is formed：
First order bleeder circuit is made of R6；
The second level is made of R7 and Q1；
The third level is made of R8, C7 and Q2.
In order to ensure that control circuit works under conditions of generating voltage is low, this control circuit employs conducting threshold voltage
Least absolute value is the small-power PMOS tube AO3401 and NMOS tube AO3400 of 0.7V.
First order output terminal controls the NMOS tube of the second level, and second level output terminal controls the PMOS tube of the third level, the third level
Output terminal enables control terminal as boost chip.
In three-level bleeder circuit, only the output of first order partial pressure can realize adjusting manually by adjusting R6, and adjust
Purpose have at 2 points：First, under conditions of output voltage is low, it is ensured that two metal-oxide-semiconductors（NMOS tube and PMOS tube）Can turn on into
And ensure the normal work of control circuit；Second, in the case of output voltage height, it can be energy pre-storage capacitance settings to adjust R6
One suitable discharging time magnitude of voltage.
On the premise of energy pre-storage capacitance C8 discharging time magnitudes of voltage are set, circuit realizes the following course of work：
When energy pre-storage capacitance charges C8 to close to setting magnitude of voltage, first order bleeder circuit output terminal potential and Q1 source electrodes
（The g poles of NMOS）Potential difference Vgs the conducting resistance of Q1 is reduced rapidly, the second level partial pressure output terminal potential it is also rapid therewith
Drop, so that Q2 conducting resistances also reduce rapidly, boost chip enables terminal potential and is raised rapidly.
Under the conditions of different input voltages, enabled when enabled terminal potential reaches high level condition corresponding in table 1
Chip.After boost chip normally starts, the energy of energy pre-storage capacitance is by being stored into the connection of boost chip output terminal after boosting
Storage capacitor.Due to the buffering cushioning effect of capacitance C7, the current potential of Enable Pin will not be with the decline of energy pre-storage capacitance voltage
And decline rapidly, and be to maintain slow discharge condition, after maintaining booster circuit work a period of time, its voltage slowly decline until
The low level of boost chip Enable Pin state in order to control, energy pre-storage capacitance enter next cycle again.With so periodically
The course of work, the voltage of storage capacitor are finally reached supply voltage, are temperature detection and wireless internet of things module for power supply.
Table 1 enables terminal voltage state of a control
| Experimental condition | VIL | VIH |
| VIN<0.8V | 0.1×VIN | 0.9×VIN |
| 0.8V< VIN<1.5V | 0.2×VIN | 0.8×VIN |
| VIN>1.5V | 0.4V | 1.2V |
Wherein, the output terminal of the boosting inverter chip is parallel with one and is used for temperature detection sensor and wireless Internet of Things
The super capacitor of net module for power supply.
Above-mentioned super capacitor can be as the energy storage device after the boosting of boosting inverter chip, and can be that temperature detection senses
Device and wireless internet of things module provide more structurally sound power supply.
Wherein, divider resistance R7 is more than or equal to 10k Ω for 10k Ω and divider resistance R8.
For control circuit, divider resistance R7, R8 selected as 10k Ω, so both can guarantee that the scope in setting magnitude of voltage
Interior metal-oxide-semiconductor has larger conducting resistance Ron with Vgs change rates, but can guarantee that in metal-oxide-semiconductor turn on process divider resistance and
Metal-oxide-semiconductor energy loss is small, and divider resistance R8 should select larger to reduce energy loss as far as possible, may be selected to be 100k Ω.
Second of embodiment：
The present embodiment and the difference of the first embodiment are：
The semi-conductor thermo-electric generation module is the power generation sheet of model SP1848-27145.
The third embodiment：
The present embodiment and the difference of the first embodiment are：
The semi-conductor thermo-electric generation module is the power generation sheet of model TEP1-126T200.
Have selected above-mentioned model is respectively SP1848-27145, and three kinds of TEP1-126T200, XH-F241A1117 have
The semi-conductor thermo-electric generation module of different performance is tested.
To measure the power generation characteristics of different temperature difference lower semiconductor temperature-difference power generation modules, semiconductor temperature differential generating experiment has been built
Platform.Whole experiment porch includes：Semiconductor temperature differential generating piece, thermostat, radiator, measuring circuit, temperature measuring device.
Using digital control constant temperature warm table simulation power equipment surface, intelligence sheetlike temperature indicator is fixed on warm table surface simulation reality
Border working environment power generation and detection temperature.Temperature can set computer end to alarm when exceeding safety value.
From Fig. 5 to Fig. 8, under the same temperature difference and load resistance, the power generation sheet output of model XH-F241A1117
Power is maximum, and model TEP1-126T200's takes second place, the minimum of model SP1848-27145, it is seen that model XH-
The power generation piece performance of F241A1117 is optimal, and as the temperature difference increases, the power generation sheet output power of three kinds of models is in increase
Trend.
When the power equipment surface temperature monitoring device of the first embodiment is come analogue measurement more than, such as table 2 is obtained
Shown test result.
2 test result (unit of table：℃)
| Room temperature | 19.3 | 19.3 | 25.0 | 25.0 | 30.2 | 30.2 |
| Hot face actual temperature | 39.6 | 48.3 | 44.0 | 53.6 | 49.8 | 58.7 |
| Measure temperature | 39.5 | 48.0 | 44.0 | 53.5 | 50.0 | 58.5 |
Table 2 for warm table actual temperature and sends back prison by the power equipment surface temperature monitoring device of the utility model
The temperature data contrast of host is controlled, measures error less than 0.3 DEG C, it is seen that used the power equipment surface temperature of the utility model
The data that monitoring device measures are very accurate.
It the above is only the utility model preferred embodiment, need to point out not departed from for those skilled in the art
On the premise of the technical program, several modifications and improvements can also be made, the technical solution of above-mentioned modification and improvement should be regarded equally
To fall into the scope that the claims are claimed.
Claims (9)
1. a kind of power equipment surface temperature monitoring device, including temperature sensing assembly, router, coordinator and monitoring host；
Wherein, the temperature sensing assembly is for the temperature measuring unit installed in each power equipment surface, the temperature sensing assembly
Including the temperature detection sensor being electrical connected and wireless internet of things module, the wireless internet of things module is led to the router
Cross wireless signal to be connected, be connected between the router and coordinator by wireless signal, the coordinator with monitoring host it
Between be connected by signal transmission cable；It is characterized in that：
The temperature sensing assembly further includes semi-conductor thermo-electric generation module, DC-DC booster circuit module and energy-storage travelling wave tube；Its
In, the semi-conductor thermo-electric generation module be based on Seebeck effect carry out thermo-electric generation power generation sheet, the semiconductor temperature difference
The huyashi-chuuka (cold chinese-style noodles) of electricity generation module and hot face are connected by cable with the input terminal of the DC-DC booster circuit module respectively, the DC-
The output terminal of DC booster circuit modules is connected by cable with the energy-storage travelling wave tube, the energy-storage travelling wave tube by cable with it is described
The power supply interface of wireless internet of things module is connected and is used for the wireless internet of things module and temperature detection sensor power supply.
2. power equipment surface temperature monitoring device according to claim 1, it is characterised in that：The temperature sensing assembly
Casing is further included, the temperature detection sensor, wireless internet of things module, semiconductor temperature difference hair are installed with the casing
Electric module, DC-DC booster circuit module and energy-storage travelling wave tube, and the casing is to be fixedly mounted on power equipment by connector
Surface, and the hot face of the semi-conductor thermo-electric generation module is bonded with the surface of power equipment and is connected.
3. power equipment surface temperature monitoring device according to claim 1, it is characterised in that：The semiconductor temperature difference hair
Electric module is the connected polylith of concatenation.
4. power equipment surface temperature monitoring device according to claim 1, it is characterised in that：The semiconductor temperature difference hair
The huyashi-chuuka (cold chinese-style noodles) fitting of electric module is provided with fin inserting type heat radiator.
5. power equipment surface temperature monitoring device according to claim 1, it is characterised in that：The wireless internet of things mould
Block uses the chip of model CC2530.
6. power equipment surface temperature monitoring device according to claim 1, it is characterised in that：The temperature detection sensing
Device is the temperature sensor of model DS18B20.
7. power equipment surface temperature monitoring device according to claim 1, it is characterised in that：Further include micropower energy
Collecting circuit, the micropower energy collection circuit include DC-DC booster circuit module, the DC-DC booster circuit module bag
Include the boosting inverter chip of model TPS61200, the boosting inverter chip of model TPS61200 have pin L, pin VIN,
Pin PS, pin UVLO, pin EN, pin VOUT, pin PGND, pin VAUX, pin FB and pin GND；
The micropower energy collection circuit further include filter capacitor c1, filter capacitor c2, filter capacitor c3, filter capacitor c4,
Filter capacitor c5, filter capacitor c6, boost inductance L1, input are with divider resistance R1, input with divider resistance R2, input partial pressure
Resistance R3, output are with partial pressure R4, output with partial pressure R5, adjustable resistance R6, input with divider resistance R7, input divider resistance
C7 is held in R8, energy pre-storage capacitance charging C8 and buffering electricity consumption；
The micropower energy collection circuit further includes the small-power PMOS tube that conducting threshold voltage least absolute value is 0.7V
And NMOS tube；
Pin L is connected with one end of boost inductance L1, and one end of boost inductance L1 forms the first common terminal；
The both ends of energy pre-storage capacitance charging C8 are serially connected between the first common terminal and GND ends；
Two fixing ends of adjustable resistance R6 are serially connected between the first common terminal and GND ends, the slide arm of adjustable resistance R6 with
The g poles of NMOS tube are connected, and the s poles of NMOS tube are connected with GND ends, and d poles and the input of NMOS tube use the one of divider resistance R7
End is connected, and input is connected with the other end of divider resistance R7 with the first common terminal；
The g poles of PMOS tube are extremely connected with the d of NMOS tube, and the d poles of PMOS tube are connected with the first common terminal, the s poles of PMOS tube
It is connected with pin EN, buffering capacitance C7 and input divider resistance R8 is parallel between pin EN and GND ends；
Filter capacitor c1 is serially connected between the first common terminal and GND ends；
Input is serially connected between the first common terminal and pin VIN with divider resistance R1；
Between input is serially connected in pin VIN and GND ends with divider resistance R2 and input with divider resistance R3, and pin UVLO with it is defeated
Enter and be connected with divider resistance R2 and input with the circuit between divider resistance R3；
Filter capacitor c2 is serially connected between pin VIN and GND ends；
Pin PS is connected with pin VIN；
Pin PGND and pin GND are grounded；
Filter capacitor c3 is serially connected between pin VAUX and GND ends；
Filter capacitor c4 is serially connected between pin FB and pin VOUT；
Between output is serially connected in pin VOUT and GND ends with partial pressure R4 and output with partial pressure R5, and partial pressure R4 and output are used in output
Circuit between being concatenated with partial pressure R5 is connected with pin FB；
Filter capacitor c5 and filter capacitor c6 is connected in parallel between pin VOUT and GND ends.
8. power equipment surface temperature monitoring device according to claim 7, it is characterised in that：The boosting inverter chip
Output terminal be parallel with one and be used for super capacitor to temperature detection sensor and wireless internet of things module for power supply.
9. power equipment surface temperature monitoring device according to claim 1, it is characterised in that：Divider resistance R7 is 10k
Ω and divider resistance R8 is more than or equal to 10k Ω.
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| CN201721436421.4U CN207317952U (en) | 2017-10-27 | 2017-10-27 | A kind of power equipment surface temperature monitoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812845A (en) * | 2022-04-11 | 2022-07-29 | 西安交通大学 | Wireless temperature measurement sensor based on temperature difference power supply |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114812845A (en) * | 2022-04-11 | 2022-07-29 | 西安交通大学 | Wireless temperature measurement sensor based on temperature difference power supply |
| CN114812845B (en) * | 2022-04-11 | 2023-12-22 | 西安交通大学 | Wireless temperature sensor based on temperature difference power supply |
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