CN102507026A - Method and device for measuring average temperature of multiple points - Google Patents
Method and device for measuring average temperature of multiple points Download PDFInfo
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- CN102507026A CN102507026A CN2011103518038A CN201110351803A CN102507026A CN 102507026 A CN102507026 A CN 102507026A CN 2011103518038 A CN2011103518038 A CN 2011103518038A CN 201110351803 A CN201110351803 A CN 201110351803A CN 102507026 A CN102507026 A CN 102507026A
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound 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[Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Abstract
The invention relates to a method for measuring average temperature of multiple points. The method comprises the following steps of: 1, uniformly arranging N thermal components at N measurement points in an area of which the average temperature is to be measured, wherein the models, parameters, and properties of the N thermal components are completely consistent, and N is a positive integer more than or equal to 16; 2, internally connecting the N thermal components in series; 3, measuring total electric signal output of the N thermal components internally connected in series; and 4, averaging the total electric signal output, calculating average electric signal output corresponding to a single thermal component, and calculating a temperature value corresponding to the average electric signal output according to electrical properties and parameters of the thermal component, so that the average temperature of the N measurement points of the area to be measured. A temperature measuring framework is simplified, and devices required by temperature measurement are reduced, so that the temperature is measured easily and quickly, and cost can be saved.
Description
Technical field
The present invention relates to a kind of thermometry and device, relate in particular to a kind of multi-point average thermometry and device, significantly reduce the complexity of circuit connection, significantly reduce the circuit cost that sensing signal amplifies.
Background technology
Temperature is controlled in the design and home environment of industrial products; It often is an important considerations; Heatsink temperature, (a kind of conductive material of under the floor, laying of floor heating at home of (PCC) power heat radiation for example are provided in the temperature of each battery, the electronic system in the temperature of LED daylight lamp plate, LED street lamp lampshade temperature inside, the power brick; So that when extremely ice-cold temperature, heat, make the floor can too ice-cold device with electric energy) or the temperature in room etc.And to carry out temperature controlling, the temperature information that at first promptly must utilize the hotness assembly will desire measuring point is obtained.The output form of this temperature information, then different because of the hotness assembly, when for example adopting thermocouple (Thermocouple), it is output as a small voltage (its big or small Yin Wendu and change); And if when adopting thermal resistance or thermistor (Thermistor), its output then is the variation (its resistance Yin Wendu changes) of resistivity.These outputs all must be amplified or after treatment conversion becomes control signal, could reach the purpose of automatic temperature-adjusting control in order to the circuit of drive controlling temperature with electronic circuit.And concerning as above-mentioned these examples in measuring temp, in fact should not only get any to make decision, but must get the mean value of multiple spot, just can reach best effect.For example one is 3V/1.25AH with the single-unit, with 16 strings, 16 and the lithium Fe battery bag of the 48V/20AH that forms of mode, then have 256 batteries, calculate if share a hotness assembly with per 4 adjacent batteries, then have 64 sensing points.And for example length and width are the electronics floor heating of 3.6m, if with hotness assembly calculating of every 30cm arrangement, then have 121 sensing points.And each hotness assembly all has two wiring; And must use a signal amplifier to handle; Therefore distribution is complicated, in above two examples, will use 128 and 242 bars wiring respectively, will use 64 and 121 signal amplifiers respectively, causes cost very high.Therefore, design one with simple mode can directly measure the method for medial temperature of multiple spot, as the application in above-mentioned field on, have very much practicality and economic worth.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of multi-point average thermometry, it is characterized in that, comprising:
Step 1 evenly is arranged on N hotness assembly on N the measurement point in the tested zone that need to detect medial temperature, and model, parameter, the performance of said N hotness assembly are in full accord, and N is the positive integer more than or equal to 16;
Step 2, with N hotness assembly to be connected together in the series system;
Step 3, total electric signal output of measuring N the hotness assembly that connects in the series connection;
Step 4; Said total electric signal output is averaged; Calculate average electrical signal output corresponding to single hotness assembly; Electric property through said hotness assembly and calculation of parameter obtain said average electrical signal and export pairing temperature value, thereby obtain the medial temperature of N measurement point in the tested zone.
In technique scheme, said hotness assembly be chosen as thermopair, thermal resistance, thermistor one of them.
In technique scheme, when the hotness assembly was chosen as thermopair, the series system in the said step 2 was for to connect according to the positive-negative polarity of thermopair pin successively.
In technique scheme, the N in the said step 1 hotness assembly even set-up mode on N measurement point adopts one or more modes in square shape, three-back-shaped, S font, W font, the zigzag.
In technique scheme, measured temperature range is in the linear measurement zone of hotness assembly.
In order to solve the problems of the technologies described above; The present invention also provides a kind of temperature measuring equipment that makes; Comprise: N hotness assembly, signal deteching circuit and temperature indicating device; It is characterized in that: N hotness assembly inserts signal deteching circuit with the back that is connected together in the series system, and signal deteching circuit converses temperature value after measuring corresponding electric signal, outputs to temperature indicating device and shows.
In technique scheme, said N hotness assembly evenly is arranged in the temperature survey zone of measurand.
The present invention has obtained following technique effect:
Simplify the framework of measuring temp, reduced the required device of measuring temp, thereby made measuring temp convenient, quick, and can practice thrift cost.
Description of drawings
Fig. 1 is a circuit structure diagram of the present invention.
Mark among the figure: 1-hotness assembly; The 2-signal deteching circuit.
Embodiment
Understand and embodiment of the present invention for the ease of those of ordinary skills, the present invention is made further detailed description below in conjunction with accompanying drawing and embodiment.
For convenient explanation, suppose to use altogether N hotness assembly to do the measurement of temperature, its k (k=1,2 ..., N) two pins of the hotness assembly of gauge point indicate with k (+) and k (-).The hotness assembly is in temperature variation, and the senser element that himself electrical quantity or electrical property change thereupon can be chosen as one of thermopair, thermal resistance, thermistor.When if the sensing of hotness assembly is output as voltage (like thermocouple), be the pin of positive voltage relatively on the hotness assembly of k gauge point of k (+) expression then, be the pin of negative voltage relatively on the hotness assembly of k gauge point of k (-) expression.And when if the sensing of hotness assembly is output as the resistance (like thermal resistance or thermistor) with polarity, then k (+) and k (-) are merely the sign of two pins of assembly, do not have the implication of polarity of voltage.
The method for measurement of multi-point average temperature of the present invention does; Utilization is with the mode of all N hotness assembly serial connection; Make total sensing output of its generation; That is the summation of the sensing of each hotness assembly output (voltage or resistance), therefore the total sensing output the when temperature that promptly is equivalent to all gauge points all equates can utilize this kind framework to do the measurement of multi-point average temperature.Concrete steps are following:
(1) 1 (-) drawn with wiring, this wiring is the negative pole of last N point measuring temp.
(2) with being connected to 2 (-) in 1 (+), be connected to 3 (-) in 2 (+), be connected to 4 (-) in 3 (+) ..., (N-1) be connected to N (-) in (+).
The system of " in connect " expression wiring here is connected directly to next hotness assembly from a hotness assembly, need not the meaning that this wiring is drawn.
(3) N (+) is drawn with wiring, this wiring is the positive pole of last N point measuring temp.
(4) the total sensing output (voltage or resistance) after the serial connection is then drawn (having only two wiring altogether) from N (+) and 1 (-).
Existing equivalent effect with this kind serial connection is explained as follows:
The medial temperature of supposing N gauge point is T
Av, and the temperature that k is ordered is for being expressed as T
k=T
Av+ t
k, t
kBe T
kWith T
AvDeparture, k=1 ..., N, then medial temperature T
AvBe
T
av=[T
1?+…?+T
N]/N=[(T
av+t
1)+…?+(T
av+t
N)]/N=[N*T
av+(t
1?+…+t
N)]/N=T
av+(t
1+…+t
N)/N。
So relatively behind the both sides of following formula equal sign, can know t
1+ ... + t
N=0, promptly the summation of the departure of each point temperature and medial temperature is 0.
Suppose the output voltage of thermopair or the voltage dividing potential drop of thermal resistance changed and measure, and measured temperature range is when being in the linear measurement zone of hotness assembly, then corresponding to temperature T
AvSensing be output as E
Av=E (T
Av), and be T with the k point in temperature
kThe time sensing output be expressed as E
k(T
k)=E
Av+ e
k, e
kBe E
k(T
k) and E
AvDeparture, k=1 ..., N, then from N (+) to 1 (-) total N point sensing output, no matter the temperature T of each point
1..., T
NWith medial temperature T
AvDeviation be actually and how distribute, perseverance does
E(N)=E(T
1?+…?+T
N)=E
1(T
1)+…+E
N(T
N)
=(E
av+e
1)+…+(E
av+e
N)=N*E
av+(e
1+…+e
N) (A)
Work as T
1=...=T
N=T
AvThe time, E
1(T
Av)=...=E
N(T
Av)=E (T
Av)=E
Av, then
E(N)=E
1(T
1)+…+E
N(T
N)=E
1(T
av)+…+E
N(T
av)=E
av+…+E
av=N*E
av (B)
After equality (A) and equality (B) made comparisons, can know e
1+ ... + e
N=0, so can get from equality (A)
E(N)=E
1(T
1)+…+E
N(T
N)=N*E
av=N*E(T
av)=E(T
av)+…+E(T
av)=E
1(T
av)+…+?E
N(T
av)?。
The meaning of following formula is that after N hotness assembly was connected in series according to above-mentioned mode, its total sensing was exported E
1(T
1)+... + E
N(T
N), no matter the temperature T of each point
1..., T
NBe actually and how distribute, the temperature that promptly is equivalent to this N gauge point is equal to medial temperature T
Av=[T
1+ ... + T
NTotal sensing output E during]/N
1(T
Av)+... + E
N(T
Av).
Circuit according to said method constitutes is as shown in Figure 1; This circuit comprises a plurality of hotness assemblies 1 and signal deteching circuit 2; A plurality of hotness assemblies 1, are then connected according to just (+) of thermopair pin negative (-) polarity when hotness assembly 1 is chosen as the thermopair shown in Fig. 1 to be connected together in the series system successively; (not shown) when hotness assembly 1 is chosen as thermal resistance or thermistor then need not be considered the sequencing problem of pin.Above-mentioned a plurality of hotness assembly 1 evenly is arranged on each measurement point in the temperature survey zone with suitable manner such as square shape, three-back-shaped, S shape, W shapes; For example foregoing: LED daylight lamp plate, LED street lamp lampshade are inner, the heat radiator of (PCC) power heat radiation is provided in each battery, the electronic system in power brick/electric battery, at home within the floor heating, and the distance between wherein per two hotness assemblies is 5-30cm.What of area size that the number of said a plurality of hotness assemblies 1 is measured according to actual needs and measurement point come to confirm, generally should be more than 8, typically be 16,32,64,128 etc., and number is many more can embody advantage of the present invention more.
Above embodiment is merely one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to claim of the present invention.Its concrete structure and size can be adjusted accordingly according to actual needs and be flexible.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the present invention's design, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (7)
1. a multi-point average thermometry is characterized in that, comprising:
Step 1 evenly is arranged on N hotness assembly on N the measurement point in the tested zone that need to detect medial temperature, and model, parameter, the performance of said N hotness assembly are in full accord, and N is the positive integer more than or equal to 16;
Step 2, with N hotness assembly to be connected together in the series system;
Step 3, total electric signal output of measuring N the hotness assembly that connects in the series connection;
Step 4; Said total electric signal output is averaged; Calculate average electrical signal output corresponding to single hotness assembly; Electric property through said hotness assembly and calculation of parameter obtain said average electrical signal and export pairing temperature value, thereby obtain the medial temperature of N measurement point in the tested zone.
2. multi-point average thermometry according to claim 1 is characterized in that: said hotness assembly be chosen as thermopair, thermal resistance, thermistor one of them.
3. multi-point average thermometry according to claim 2 is characterized in that: when the hotness assembly was chosen as thermopair, the series system in the said step 2 was for to connect according to the positive-negative polarity of thermopair pin successively.
4. according to any described multi-point average thermometry among the claim 2-3, it is characterized in that: the even set-up mode of the N in the said step 1 hotness assembly on N measurement point is one or more modes in square shape, three-back-shaped, S font, W font, the zigzag.
5. multi-point average thermometry according to claim 4 is characterized in that: measured temperature range is in the linear measurement zone of said hotness assembly.
6. temperature measuring equipment that uses any described multi-point average thermometry among the claim 1-5; Comprise: N hotness assembly, signal deteching circuit and temperature indicating device; It is characterized in that: N hotness assembly inserts signal deteching circuit with the back that is connected together in the series system; Signal deteching circuit converses temperature value after measuring corresponding electric signal, outputs to temperature indicating device and shows.
7. multi-point average thermometry according to claim 6 is characterized in that: said N hotness assembly is uniformly distributed in the temperature survey zone of measurand.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103518038A CN102507026A (en) | 2011-11-09 | 2011-11-09 | Method and device for measuring average temperature of multiple points |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103518038A CN102507026A (en) | 2011-11-09 | 2011-11-09 | Method and device for measuring average temperature of multiple points |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444906A (en) * | 2015-11-23 | 2016-03-30 | 惠州学院 | High-sensitivity temperature sensor |
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