CN207780276U - A kind of detection device for foreign matter - Google Patents
A kind of detection device for foreign matter Download PDFInfo
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- CN207780276U CN207780276U CN201721463526.9U CN201721463526U CN207780276U CN 207780276 U CN207780276 U CN 207780276U CN 201721463526 U CN201721463526 U CN 201721463526U CN 207780276 U CN207780276 U CN 207780276U
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Abstract
The utility model discloses a kind of detection device for foreign matter, including：The heat measurement module of thermal change in energy transmission environment for detecting wireless energy transfer system；It connect with heat measurement module, according to the caloric information for the energy transmission environment that heat measurement module detects, judges in the energy transmission environment of wireless energy transfer system with the presence or absence of the foreign bodies detection module of fever foreign matter.External pyrotoxin, generate heat foreign matter, heat in energy transmission environment can be caused to change extremely, the caloric information in energy transmission environment is obtained by heat measurement module, judge whether heat changes extremely in the energy transmission environment by foreign bodies detection module, if calorie value is more than preset change threshold more than preset threshold value or heat gradient, it can detect that the presence of fever foreign matter, to realize to the accurate detection of the fever such as external metallic foreign body foreign matter in wireless energy transfer system and reduce the cost of detection.
Description
Technical field
The utility model is related to wireless energy transmission technology fields, more particularly to a kind of detection device for foreign matter.
Background technology
In wireless energy transfer system, especially in wireless power supply system, between transmitting coil and receiving coil
Certain objects (such as metal object) can be heated by wireless power supply system, so as to cause unpowered system capacity be lost, it is serious
In the case of, the object heated can also damage wireless power supply system device.
Currently, wireless power supply system to the detection of external metal object be typically employed in transmitting coil surface layout several
Small-sized search coil applies alternating voltage to small-sized search coil, generates detection magnetic field, and extraneous metal object enters detection magnetic field
It is interior, changes of magnetic field can be caused, to recognize metallic foreign body by detecting the variation in magnetic field, however this mode require it is each small
Type coil will have corresponding a set of emission of magnetic field and detecting system, and the detecting system is of high cost, and mounting structure is multiple
It is miscellaneous.
Therefore, the accurate inspection for the foreign matter that generates heat external metallic foreign body etc. in wireless energy transfer system how can be realized
It surveys, and the cost of detection can be reduced, be a technical problem that technical personnel in the field need to solve at present.
Utility model content
The purpose of this utility model is to provide a kind of detection device for foreign matter, can realize to wireless energy transfer system China and foreign countries
Carry out the accurate detection of the fever foreign matter such as metallic foreign body, and the cost of detection can be reduced.
In order to solve the above technical problems, the utility model provides following technical solution：
A kind of detection device for foreign matter, including：Heat becomes in energy transmission environment for detecting wireless energy transfer system
The heat measurement module of change；It is connect with the heat measurement module, the energy transmission detected according to the heat measurement module
The caloric information of environment judges in the energy transmission environment of the wireless energy transfer system with the presence or absence of the foreign matter of fever foreign matter
Detection module.
Preferably, the heat measurement module includes：It is uniformly arranged on the energy transmitting drum of wireless power supply system
If dry temperature sensor；It connect with each temperature sensor, is adopted for acquiring the temperature of temperature value of corresponding temperature sensor
Collect module.
Preferably, the foreign bodies detection module is：It is connect with the temperature collecting module, according to the temperature collecting module
Each temperature value of acquisition detects processing module of the corresponding sense region with the presence or absence of fever foreign matter of corresponding temperature sensor.
Preferably, all temperature sensors are divided into n temperature sensor group, and n is the integer more than 1, each temperature sensing
Temperature sensor in device group is in sequential series, free end and the preset electricity of the head end temperature sensor in each temperature sensor group
Source connects, and the free end of the terminal temperature sensor in each temperature sensor group is connect with reference voltage portion, two-by-two temperature sensing
The free end of the common end of device and the terminal temperature sensor is connect with the temperature collecting module.
Preferably, the temperature collecting module includes：With each one-to-one temperature collecting cell of temperature sensor group；Respectively
Temperature collecting cell includes the preset power supply and base that reference voltage is provided for itself corresponding temperature sensor group
The reference voltage portion of quasi- voltage, for acquiring in itself corresponding temperature sensor group the voltage value of each temperature sensor and corresponding
Calculate the temperature acquisition calculating part of corresponding temperature value；For storing itself calculated corresponding temperature sensor group Nei Gewen
Spend the memory of the temperature value of sensor.
Preferably, the processing module includes：Each temperature sensor for obtaining each temperature collecting cell storage corresponds to
Temperature value temperature acquiring unit；Judge whether the temperature difference between different temperature sensors is more than preset threshold value, and
When the temperature difference is more than preset threshold value there is fever foreign matter in the corresponding sense region of the judgement high temperature sensor of temperature
Judging unit.
Preferably, the processing module includes：Each temperature sensor for reading each temperature collecting cell storage corresponds to
Temperature value temperature reading unit；The rate temperature change of each temperature sensor is detected, and in temperature change speed
Rate judges that the corresponding sense region of corresponding temperature sensor has the detection unit of fever foreign matter when being more than preset threshold value.
Preferably, the processing module includes：The storage unit of storage temperature reference value；With the storage unit and respectively
The temperature collecting cell connection, the corresponding temperature of each temperature sensor for reading each temperature collecting cell storage
Value, and compared with the temperature reference value of storage unit storage, according to the abnormal to judge that corresponding temperature passes of temperature value
There is the processor of fever foreign matter in the corresponding sense region of sensor.
Preferably, the processor includes：Each temperature sensor for reading each temperature collecting cell storage is corresponding
The digital independent subelement of temperature value；It is connected with the digital independent subelement, compares each temperature value read, and filter out
The screening subelement of temperature maximum or temperature highest range；It connects, will sieve with the screening subelement and storage unit
The temperature maximum or temperature highest range selected compare with the temperature reference value, judge whether temperature value is abnormal, and
Judge that the corresponding sense region of the corresponding temperature sensor of corresponding temperature value has fever foreign matter when judging temperature value exception
Judgment sub-unit.
Preferably, further include：It is connect with the processing module, for detecting that corresponding temperature passes in the processing module
When the corresponding sense region of sensor has fever foreign matter, the alarm module of corresponding alarm signal is sent out.
Preferably, the temperature sensor is distributed in matrix form or circle type is distributed.
Preferably, each temperature sensor includes negative tempperature coefficient thermistor and the cladding negative temperature coefficient heat-sensitive
The shell of resistance, closely knit heat-conducting silicone grease between the negative tempperature coefficient thermistor and the shell of itself.
Compared with prior art, above-mentioned technical proposal has the following advantages：
A kind of detection device for foreign matter provided by the utility model, including：Energy for detecting wireless energy transfer system
Measure the heat measurement module of thermal change in transmission environment；It connect with heat measurement module, is detected according to heat measurement module
Energy transmission environment caloric information, judge in the energy transmission environment of wireless energy transfer system with the presence or absence of fever foreign matter
Foreign bodies detection module.When carrying out energy transmission by wireless energy transfer system, in normal operation, energy passes
Thermal change in defeated environment occurs in a certain range.External pyrotoxin, that is, generate heat foreign matter, can cause energy transmission ring
Domestic heat changes extremely, obtains the caloric information in energy transmission environment by heat measurement module, passes through foreign bodies detection mould
Block judges whether heat changes extremely in the energy transmission environment, if calorie value is more than preset threshold value or heat gradient
More than preset change threshold, you can the presence for detecting fever foreign matter, to realize in wireless energy transfer system
The accurate detection of the fever foreign matter such as extraneous metal foreign matter, and the cost of detection can be reduced.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of utility model, for those of ordinary skill in the art, without creative efforts, also
It can be obtain other attached drawings according to these attached drawings.
Fig. 1 is by a kind of detection device for foreign matter structural schematic diagram that specific implementation mode provides of the utility model；
The detection device for foreign matter structural schematic diagram that Fig. 2 is provided by the utility model another kind specific implementation mode；
The detection device for foreign matter structural schematic diagram that Fig. 3 is provided by the utility model another specific implementation mode.
Specific implementation mode
The core of the utility model is to provide a kind of detection device for foreign matter, can realize to wireless energy transfer system China and foreign countries
Carry out the accurate detection of the fever foreign matter such as metallic foreign body, and the cost of detection can be reduced.
It is understandable in order to enable the above objects, features, and advantages of the utility model to become apparent, it is right below in conjunction with the accompanying drawings
Specific embodiment of the present utility model is described in detail.
Detail is elaborated in the following description in order to fully understand the utility model.But the utility model can
Implemented different from other manner described here with a variety of, those skilled in the art can be without prejudice to the utility model connotation
In the case of do similar popularization.Therefore the utility model is not limited by following public specific implementation.
Referring to FIG. 1, Fig. 1 is by a kind of detection device for foreign matter structural representation that specific implementation mode provides of the utility model
Figure.
A kind of specific implementation mode of the utility model provides a kind of detection device for foreign matter, including：It is wireless for detecting
The heat measurement module 11 of thermal change in the energy transmission environment of energy transmission system；It is connect with heat measurement module 11, root
According to the caloric information for the energy transmission environment that heat measurement module 11 detects, the energy transmission of wireless energy transfer system is judged
With the presence or absence of the foreign bodies detection module of fever foreign matter in environment.
Further, it is preferable to which heat measurement module 11 includes：It is uniformly arranged on the energy transmitting drum of wireless power supply system
Dry temperature sensor 1 on if；It is connect with each temperature sensor 1, the temperature of the temperature value for acquiring corresponding temperature sensor 1
Acquisition module 2.Foreign bodies detection module is：It is connect with temperature collecting module 2, each temperature value acquired according to temperature collecting module 2
Detect processing module 3 of the corresponding sense region with the presence or absence of fever foreign matter of corresponding temperature sensor 1.
In the present embodiment, the transmitting coil in energy transmitting drum, that is, wireless power supply system, is wireless power supply system
In for the part of power supply for electrical equipment.The foreign matters such as metal can be heated by when carrying out wireless power in wireless power
The multiple temperature sensors of uniformly arrangement of the energy transmitting drum of system, to detect the temperature on energy transmitting drum surface
Degree, external pyrotoxin, that is, generate heat foreign matter, energy transmitting drum surface temperature can be caused to change extremely, at this point, temperature acquisition mould
Block can collect the abnormal conditions for the temperature value that the temperature sensor of fever foreign matter region detects, at this time processing module
It can judge abnormal conditions according to collected temperature value, to detect the presence of fever foreign matter, and then realize to wireless
The accurate detection of the fever such as external metallic foreign body foreign matter in power supply system.And the detection device for foreign matter mounting structure is simple, and at
This is relatively low, reduces the cost of detection.
Referring to FIG. 2, the detection device for foreign matter structure that Fig. 2 is provided by the utility model another kind specific implementation mode is shown
It is intended to.
In a kind of embodiment of the utility model, all temperature sensors are divided into n temperature sensor group, and n is
Integer more than 1, the temperature sensor in each temperature sensor group is in sequential series, and the head end temperature in each temperature sensor group passes
The free end of sensor is connect with preset power supply, free end and the benchmark electricity of the terminal temperature sensor in each temperature sensor group
Splenium connects, and the free end of the common end of temperature sensor and terminal temperature sensor is connect with temperature collecting module two-by-two.Temperature
Spending acquisition module includes：With each one-to-one temperature collecting cell of temperature sensor group；Each temperature collecting cell is including being
Itself corresponding temperature sensor group provides the preset power supply of reference voltage and the reference voltage portion of reference voltage, for adopting
Collect the voltage value of each temperature sensor in itself corresponding temperature sensor group and accordingly calculate the temperature of corresponding temperature value and adopts
Collect calculating part；Storage for storing the temperature value of each temperature sensor in itself calculated corresponding temperature sensor group
Device.
As shown in Fig. 2, being illustrated for temperature sensor to be divided into 3 temperature sensor groups.First temperature sensing
Device group includes the total m temperature sensor of A1, A2, A3 ... Am, and m is the integer more than 1；Second temperature sensor group include B1, B2,
The total m temperature sensor of B3 ... Bm；Third temperature sensor group includes the total m temperature sensor of C1, C2, C3 ... Cm.Each temperature
Sensor group is respectively correspondingly connected with a temperature collecting cell, and each temperature collecting cell is connect with processing module.Each temperature acquisition
Unit acquires the temperature value of each temperature sensor, and is transmitted to processing module, and processing module judges according to each temperature value of reception
The region of each temperature sensor detection is with the presence or absence of fever foreign matter.
Further, as shown in figure 3, Fig. 3 is illustrated by taking a temperature sensor group as an example.In the temperature sensor group
Temperature sensor it is in sequential series, wherein the first temperature sensor 31 be head end temperature sensor, free end, i.e., far from phase
One end of adjacent temperature sensor is connect with preset power supply, which is preferably the temperature acquisition that the temperature sensor group is connected
The power supply 32 of reference voltage is provided in unit；Second temperature sensor 30 is terminal temperature sensor, free end, i.e., far from phase
One end of adjacent temperature sensor is connect with reference voltage portion 33, wherein reference voltage portion is preferably benchmark electricity known to a resistance value
Resistance, one end ground connection of the reference resistance, the other end is the free end for connecting terminal temperature sensor.Wherein, temperature sensing two-by-two
The common end of device and the free end of terminal temperature sensor are connect with temperature acquisition calculating part 34, further, based on storing
The memory of the temperature value of each temperature sensor can be built in temperature acquisition in itself the corresponding temperature sensor group calculated
In calculating part.According to reference voltage, reference voltage and the voltage at the common end of temperature sensor two-by-two, passes through and calculate voltage
Difference can calculate the respective voltage value of each temperature sensor, and preferably each temperature sensor uses negative tempperature coefficient thermistor,
Respective temperature value can be calculated according to the voltage value of reference voltage portion and each temperature sensor.Specifically, temperature sensor
Different resistance values is corresponded at different temperature, the resistance value of temperature more high-temperature sensor is lower, conversely, temperature sensor
Resistance value is higher.Since the temperature of testee is continuous, so the variation of the resistance value of temperature sensor is also continuous.
The resistance in reference voltage portion is known, according to its voltage, you can calculates and flows through reference voltage portion electric current, the i.e. reference voltage
The electric current of temperature sensor group corresponding to portion is at this time it is known that the voltage at each temperature sensor both ends can be measured, you can
The resistance value for calculating each temperature sensor, according to the relation formula of the resistance value of the thermistor in temperature sensor and temperature
Corresponding temperature value can be calculated, the temperature value of each temperature sensor is preserved in sequence.
It should be noted that present embodiment only preferably obtains temperature value using the above scheme, matched using the program
Part is of low cost, advantageously reduces testing cost, and specific temperature acquisition modes can be selected according to actual conditions, this reality
Mode is applied not limit this.
In a kind of embodiment of the utility model, processing module includes：Obtain each of each temperature collecting cell storage
The temperature acquiring unit of the corresponding temperature value of temperature sensor；Judge whether the temperature difference between different temperature sensors is more than
Preset threshold value, and the corresponding sense region of the judgement high temperature sensor of temperature exists when temperature difference is more than preset threshold value
The judging unit of fever foreign matter.
In the present embodiment, when there is no the temperature that when fever foreign matter, each temperature sensor detects on energy transmitting drum
Degree substantially will not change, and too big variation will not occur for the temperature difference between especially two neighboring or several temperature sensors,
If there is fever foreign matter, the temperature difference between different temperatures sensor can then have greatly changed, when fixed two or
When temperature difference between several temperature sensors is more than preset threshold value, then it represents that there are fever foreign matters, judge that temperature is high at this time
Temperature sensor corresponding sense region exist fever foreign matter.
In the another embodiment of the utility model, processing module includes：Read each temperature collecting cell storage
The temperature reading unit of the corresponding temperature value of each temperature sensor；The rate temperature change of each temperature sensor is detected, and in temperature
Degree rate of change judges that the corresponding sense region of corresponding temperature sensor has the inspection of fever foreign matter when being more than preset threshold value
Survey unit.
When there is fever foreign matter on energy transmitting coil, then the temperature change of the temperature sensor in foreign matter region
Rate can have greatly changed, and detect the rate temperature change of each temperature sensor at this time, if rate temperature change is more than default
Threshold value, then judge corresponding temperature sensor corresponding sense region exist fever foreign matter.
In another embodiment of the utility model, processing module includes：The storage unit of storage temperature reference value；
It is connect with storage unit and each temperature collecting cell, each temperature sensor for reading each temperature collecting cell storage corresponds to
Temperature value, and compared with the temperature reference value of storage unit storage, according to the abnormal to judge corresponding temperature of temperature value
There is the processor of fever foreign matter in the corresponding sense region of sensor.
Processor includes：Read the digital independent of the corresponding temperature value of each temperature sensor of each temperature collecting cell storage
Subelement；It is connected with data reading subunit, compares each temperature value read, and filter out temperature maximum or temperature most
The screening subelement of high scope；It is connected with screening subelement and storage unit, by the temperature maximum filtered out or temperature
Highest range compares with temperature reference value, judges whether temperature value is abnormal, and corresponding temperature is judged when judging temperature value exception
There is the judgment sub-unit of fever foreign matter in the corresponding sense region of the corresponding temperature sensor of angle value.
In the present embodiment, when there is fever foreign matter on energy transmitting drum, in the region of foreign matter covering
The temperature that temperature sensor detects can increase, at this point, judging temperature if the temperature detected is higher than preset temperature reference value
Degree is abnormal, judges that the corresponding sense region of corresponding temperature sensor has fever foreign matter.In order to reduce calculation amount, raising processing
The working efficiency of device can filter out thermal self-restraint stress or highest zone in the temperature value of acquisition, the temperature highest that will be found
Point or highest zone are compared with pre-set temperature reference value, without each temperature value and temperature reference that will be obtained
Value is compared.
Further, detection device for foreign matter further includes：It is connect with processing module, it is corresponding for being detected in processing module
When the corresponding sense region of temperature sensor has fever foreign matter, the alarm module of corresponding alarm signal is sent out.
Find that there are foreign matters, present embodiment to be provided with alarm module on energy transmitting drum in time for the ease of user,
The UART communication interfaces that alarm module can be carried by wireless power supply system notify other controllers being connect with the system, root
Judge whether to stop power supply according to preset processing scheme, or directly notifies user, in order to which user manually selects stopping power supply,
The other power supply units of selection remove the subsequent operations such as fever foreign matter, to ensure power supply safety.
On the basis of any of the above-described embodiment, in a kind of embodiment of the utility model, temperature sensor is in matrix
Formula is distributed or circle type distribution.Further, each temperature sensor includes negative tempperature coefficient thermistor and cladding negative temperature system
The shell of number thermistor, closely knit heat-conducting silicone grease between negative tempperature coefficient thermistor and the shell of itself, to reach best
Heat-transfer effect and protecting effect improve the service life of the detection device for foreign matter.
It is that paster thermistor is small using the advantages of negative tempperature coefficient thermistor, it is at low cost, it is easily installed.
A kind of embodiment of the utility model is also illustrated the workflow of above-mentioned detection device for foreign matter：
Detection device for foreign matter carries out apparatus system and powers on, and boots up startup；
The working condition of self detection all parts of apparatus system, and by the status indication of all parts in corresponding data
On position, state normal labeled is 1, and abnormal state is labeled as 0, and apparatus system is restarted if having the abnormal component of startup；
Read the temperature data that each temperature collecting cell preserves；
Foreign matter is judged whether according to the temperature data of reading.
In conclusion detection device for foreign matter provided by the utility model, when needing to carry out wireless energy transfer, especially
When being wireless power, foreign bodies detection is carried out in real time, can not only be detected the metallic foreign body due to being heated, be prevented wireless power
System is damaged, moreover it is possible to be detected nonmetallic thermal objects, be ensured the safe operation of wireless power supply system.Thermal objects it is big
In the case of small and shape all differences, for covering the external thermal objects of whole temperature sensors, the temperature of temperature sensor
Threshold value of the degree more than setting, you can to send out alarm signal；For partly covering the external heat object of temperature sensor
Body, the temperature by the temperature sensor that external thermal objects cover be more than setting threshold value or than not by external fever
The difference of the temperature of the temperature sensor of object covering has been more than the threshold value of setting, can also send out alarm signal；For
Small-sized external thermal objects, are not covered on temperature sensor, the temperature away from the nearest temperature sensor of external thermal objects
Rate of change is more than the threshold value of setting, can also send out alarm signal.To realize in wireless energy transfer system
The accurate detection of the fever foreign matter such as various extraneous metal foreign matters, and the cost of detection can be reduced.
A kind of detection device for foreign matter provided by the utility model is described in detail above.Tool used herein
Body example is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to understand
The method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not taking off
Under the premise of from the utility model principle, several improvements and modifications can be made to this utility model, these improvement and modification
It also falls into the protection domain of the utility model claims.
Claims (12)
1. a kind of detection device for foreign matter, which is characterized in that including：Energy transmission environment for detecting wireless energy transfer system
The heat measurement module of middle thermal change；It connect with the heat measurement module, is detected according to the heat measurement module
The caloric information of energy transmission environment judges different with the presence or absence of generating heat in the energy transmission environment of the wireless energy transfer system
The foreign bodies detection module of object.
2. detection device for foreign matter according to claim 1, which is characterized in that the heat measurement module includes：Uniformly set
If setting the dry temperature sensor on the energy transmitting drum of wireless power supply system；It connect, is used for each temperature sensor
Acquire the temperature collecting module of the temperature value of corresponding temperature sensor.
3. detection device for foreign matter according to claim 2, which is characterized in that the foreign bodies detection module is：With the temperature
Acquisition module connection is spent, each temperature value acquired according to the temperature collecting module detects the corresponding sense of corresponding temperature sensor
Survey processing module of the region with the presence or absence of fever foreign matter.
4. detection device for foreign matter according to claim 3, which is characterized in that all temperature sensors are divided into n temperature
Sensor group, n are the integer more than 1, and the temperature sensor in each temperature sensor group is in sequential series, in each temperature sensor group
The free end of head end temperature sensor connect with preset power supply, the terminal temperature sensor in each temperature sensor group it is outstanding
Dead end is connect with reference voltage portion, two-by-two the free end of the common end of temperature sensor and the terminal temperature sensor with it is described
Temperature collecting module connects.
5. detection device for foreign matter according to claim 4, which is characterized in that the temperature collecting module includes：With each temperature
Spend the one-to-one temperature collecting cell of sensor group；Each temperature collecting cell includes for itself corresponding temperature sensor group
The preset power supply of reference voltage and the reference voltage portion of reference voltage are provided, passed for acquiring itself corresponding temperature
The voltage value of each temperature sensor and the temperature acquisition calculating part of corresponding temperature value is accordingly calculated in sensor group；Based on storing
The memory of the temperature value of each temperature sensor in itself the corresponding temperature sensor group calculated.
6. detection device for foreign matter according to claim 5, which is characterized in that the processing module includes：It obtains each described
The temperature acquiring unit of the corresponding temperature value of each temperature sensor of temperature collecting cell storage；Judge different temperature sensors
Between temperature difference whether be more than preset threshold value, and the high temperature of judgement temperature when the temperature difference is more than preset threshold value
There is the judging unit of fever foreign matter in the corresponding sense region of sensor.
7. detection device for foreign matter according to claim 5, which is characterized in that the processing module includes：It reads each described
The temperature reading unit of the corresponding temperature value of each temperature sensor of temperature collecting cell storage；Detect each temperature sensor
Rate temperature change, and the rate temperature change be more than preset threshold value when judge the corresponding of corresponding temperature sensor
There is the detection unit of fever foreign matter in sensing region.
8. detection device for foreign matter according to claim 5, which is characterized in that the processing module includes：Storage temperature is joined
Examine the storage unit of value；It connect with the storage unit and each temperature collecting cell, is adopted for reading each temperature
Collect the corresponding temperature value of each temperature sensor of unit storage, and compared with the temperature reference value of storage unit storage,
According to the abnormal to judge that the corresponding sense region of corresponding temperature sensor has the processor of fever foreign matter of temperature value.
9. detection device for foreign matter according to claim 8, which is characterized in that the processor includes：Read each temperature
Spend the digital independent subelement of the corresponding temperature value of each temperature sensor of collecting unit storage；With the digital independent subelement
Connection, compares each temperature value read, and filter out temperature maximum or the screening subelement of temperature highest range；And institute
Screening subelement and storage unit connection are stated, the temperature maximum filtered out or temperature highest range and the temperature are joined
It examines value to compare, judges whether temperature value is abnormal, and judge that the corresponding temperature of corresponding temperature value passes when judging temperature value exception
There is the judgment sub-unit of fever foreign matter in the corresponding sense region of sensor.
10. detection device for foreign matter according to claim 9, which is characterized in that further include：It is connect with the processing module,
When for detecting that the corresponding sense region of corresponding temperature sensor has fever foreign matter in the processing module, send out corresponding
The alarm module of alarm signal.
11. according to claim 2 to 10 any one of them detection device for foreign matter, which is characterized in that the temperature sensor is in
Matrix form is distributed or circle type distribution.
12. detection device for foreign matter according to claim 11, which is characterized in that each temperature sensor includes negative temperature
Coefficient resistance and the shell for coating the negative tempperature coefficient thermistor, the negative tempperature coefficient thermistor and itself
Closely knit heat-conducting silicone grease between shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721463526.9U CN207780276U (en) | 2017-11-06 | 2017-11-06 | A kind of detection device for foreign matter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721463526.9U CN207780276U (en) | 2017-11-06 | 2017-11-06 | A kind of detection device for foreign matter |
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| CN207780276U true CN207780276U (en) | 2018-08-28 |
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| CN201721463526.9U Active CN207780276U (en) | 2017-11-06 | 2017-11-06 | A kind of detection device for foreign matter |
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