CN1881138A - Temperature control system - Google Patents
Temperature control system Download PDFInfo
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- CN1881138A CN1881138A CN 200510078065 CN200510078065A CN1881138A CN 1881138 A CN1881138 A CN 1881138A CN 200510078065 CN200510078065 CN 200510078065 CN 200510078065 A CN200510078065 A CN 200510078065A CN 1881138 A CN1881138 A CN 1881138A
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Abstract
The invention discloses a temperature control system in the laptop, which comprises the following parts: first control part, second control part, third control part and forth control part, wherein the first control part outputs a control signal, which corresponds to variation temperature and load current of outer power converter; the second control part connects calculating disposal unit; the third control part outputs another control signal, which corresponds to variation temperature and load current of outer power converter; the forth control part connects charging part; when the laptop is charged by outer power converter, the second control part receives control signal to control working condition of calculating disposal unit; the forth control part receives charging current from charging part; when the laptop is charged by battery, the second control part receives working condition from other control calculating disposal unit.
Description
Technical field
The present invention especially in regard to a kind of notebook that is used for, automatically adjusts the temperature control system of notebook power consumption about a kind of temperature control system along with the variation of temperature and load current.
Background technology
Notebook is usually by an external power source converter or a powered battery, external power source converter or battery produce heat because of the raising of loss in efficiency or load current, when increasing, heat must strengthen its radiating effect, usually strengthen heat abstractor, increase area of dissipation or improve cooling air delivery, but as when environment temperature is high, the heat that external power source converter or battery are produced is difficult for leaving, and when continuing to work under hot environment, will influence its performance and life-span.
Power consumption when satisfying the notebook peak work capacity and the highest environment for use temperature, power consumption when the output power of external power source converter or battery designs the peak work capacity that must satisfy notebook and high ambient temperature usually, so can increase production cost, and must increase the volume of external power source converter or battery and heat radiation requisite space thereof, thereby can't take into account notebook for the little requirement of frivolous body.
In addition, because of the notebook power consumption difference of different machines, even have identical joint on the notebook of different machines, same external power source converter or battery also can't be common between the notebook of different machines.
Summary of the invention
Therefore, a purpose of the present invention provides a kind of temperature control system, and corresponding temperature and load current are guaranteed the performance of external power source converter and battery and prolonged its life-span with control power consumption.
Another object of the present invention provides a kind of temperature control system, with the power of the normal power consumption of the corresponding notebook of external power source converter or battery design, reduction cost and reduced volume.
Another purpose of the present invention provides a kind of temperature control system, controls power consumption automatically because of the effect of temperature control system, and external power source converter or battery are applicable to the notebook machine of multiple different capacity.
For achieving the above object, temperature control system of the present invention is used for a notebook, comprises one first control assembly, one second control assembly, one the 3rd control assembly and one the 4th control assembly.A control signal is exported in the temperature of the corresponding external power source converter of first control assembly and the variation of load current.Second control assembly is connected in operation processing unit.Another control signal is exported in the temperature of the corresponding battery of the 3rd control assembly and the variation of load current.The 4th control assembly is connected in charging unit.When notebook was powered by the external power source converter, second control assembly was accepted the duty of control signal control operation processing unit, and simultaneously, the 4th control assembly is accepted the charging current of control signal control charging unit.When notebook was battery-powered, second control assembly was accepted the duty of the 3rd control signal control operation processing unit.
First control assembly comprises a comparator circuit and a temperature sensor, the reference voltage that one input end input temp sensor of comparator circuit produces, the comparative voltage that another input end input notebook computer load electric current produces is exported control signal behind comparator circuit comparison reference voltage and the comparative voltage.
Second control assembly comprises a comparator circuit and an oscillatory circuit, the clock signal that the one input end input oscillatory circuit of comparator circuit produces, another input end is imported the control signal of first control assembly or another control signal of the 3rd control assembly, after comparator circuit compares clock signal and control signal or another control signal, export the duty of a signal controlling operation processing unit.
The 3rd control assembly comprises a comparator circuit and a temperature sensor, the reference voltage that one input end input temp sensor of comparator circuit produces, the comparative voltage that another input end input notebook computer load electric current produces, another control signal of output behind comparator circuit comparison reference voltage and the comparative voltage.
The 4th control assembly comprises three resistance, one end of three resistance is connected in charging unit jointly, the other end of three resistance is connected to certain voltage source, control signal and ground connection, adjusts the decline ratio and the minimum charge current of charging current by the numerical value of adjusting three resistance.
Description of drawings
For above-mentioned and other purposes of the present invention, feature, advantage and embodiment can be become apparent, accompanying drawing is described in detail as follows:
Fig. 1 is the system block diagrams of a preferred embodiment of the present invention;
Fig. 2 is the circuit diagram of a preferred embodiment of first control assembly;
Fig. 3 is the circuit diagram of a preferred embodiment of second control assembly;
Fig. 4 is the circuit diagram of a preferred embodiment of the 3rd control assembly;
Fig. 5 is the circuit diagram of a preferred embodiment of the 4th control assembly;
Fig. 6 is a control timing figure of the present invention; And
Fig. 7 is another control timing figure of the present invention.
The main element symbol description
Control assembly 110 in 100: the first: comparator circuit
120: 200: the second control assemblies of temperature sensor
210: comparator circuit 220: oscillatory circuit
320: 400: the four control assemblies of temperature sensor
700: notebook 710: the external power source converter
720: battery 730: charging unit
731: Current Control pin 740: the internal electric source converter
750: operation processing unit 751: duty control pin
R10: resistance R 11: resistance
R20: resistance R 21: resistance
R22: resistance R 23: resistance
R30: resistance R 31: resistance
R41: resistance R 42: resistance
R43: resistance C11: electric capacity
C20: capacitor C 31: electric capacity
A20: operational amplifier
Va1: reference voltage Vb1: comparative voltage
Va3: reference voltage Vb3: comparative voltage
S1: control signal S2: control signal
S3: control signal Tb: clock signal
Embodiment
Below will be with graphic and describe in detail and to clearly demonstrate spirit of the present invention, as those skilled in the art after understanding preferred embodiment of the present invention, when can be by the technology of teachings of the present invention, change and modification, it does not break away from spirit of the present invention and scope.
As shown in Figure 1, temperature control system of the present invention is used for a notebook, and its variation that utilizes corresponding temperature and load current is to adjust power consumption.Notebook 700 comprises an external power source converter 710, a battery 720, a charging unit 730, an internal electric source converter 740 and an operation processing unit 750 (hereinafter to be referred as Central Processing Unit, CPU 750) usually.External power source converter 710 conversion external power sources are to power to notebook 700.Battery 720 is a rechargeable battery, is positioned at notebook 700, when external power source converter 710 is stopped power supply, then provides notebook 700 work required electric power by battery 720.Charging unit 730 is with the power supply of external power source converter 710, convert the required electric power of battery 720 chargings to, and charging unit 730 comprises charging current control pin 731 (hereinafter to be referred as pin 731) usually, and the signal S4 by accepting the 4th control assembly is with the charging current size of control charging unit 730 outputs.Internal electric source converter 740 converts the power supply of external power source converter 710 or battery 720 to CPU 750 work required electric power.CPU 750 comprises duty control pin 751 (hereinafter to be referred as pin 751) usually, accept the signal S2 control of second control part, when pin 751 was high-voltage level (Hi), then CPU 750 was in the high speed operation state, the electric power that corresponding consumption is higher.When pin 751 was low voltage level (Lo), then CPU 750 was in the tick-over state, then consumed less electric power this moment.
Temperature control system of the present invention comprises first control assembly 100, second control assembly 200, the 3rd control assembly 300 and the 4th control assembly 400.First control assembly 100 is arranged in external power source converter 710, along with the variation of the temperature of external power source converter 710 and load current with output control signal S1.Second control assembly 200 is connected in pin 751, with the duty of control CPU 750.The 3rd control assembly 300 is adjacent to battery 720, along with the temperature of battery 720 and the variation output control signal S3 of load current.The 4th control assembly 400 is connected in pin 731, with the charging current of control charging unit 730.
When notebook 700 is powered by external power source converter 710, the variation output control signal S1 of first control assembly, 100 corresponding external power source converter 710 temperature and load current, second control assembly, 200 corresponding control signal S1 are with the duty of control CPU 750, simultaneously, the 4th control assembly 400 corresponding control signal S1 are to adjust the charging current of charging unit 740, and this moment, the 3rd control assembly 300 was not had an effect.
When the power failure of external power source converter 710, first control assembly 100 is not had an effect, notebook 700 is by battery 720 power supplies, at this moment, charging unit 730 stops charging, the 4th control assembly 400 of control charging unit 730 also quits work, and then by the variation output control signal S3 of the 3rd control assembly 300 corresponding battery 720 temperature and load current, second control assembly, 200 corresponding this control signal S3 are with the duty of control CPU 750 for the power consumption of notebook 700.
Following working method with reference to each graphic each control assembly of more detailed description.
One preferred embodiment of first control assembly 100 as shown in Figure 2, first control assembly 100 are arranged in and comprise a comparator circuit 110 and a temperature sensor 120 in external power source converter 710, the first control assemblies 100.Temperature sensor 120 comprises a thermistor.The positive input terminal of comparator circuit 110 is connected in temperature sensor 120, with the voltage of temperature sensor 120 2 ends as a reference voltage Va1, effect because of temperature sensor 120, this reference voltage Va1 will change magnitude of voltage along with temperature, voltage reduced when temperature raise, otherwise voltage raises when temperature reduces.The negative input end of comparator circuit 110 is connected in a resistance R 10, the load current of notebook 700 R10 that flows through produces a comparative voltage Vb1, output control signal S1 behind comparator circuit 110 comparison reference voltage Va1 and the comparative voltage Vb1, when comparative voltage Vb1 is higher than reference voltage Va1, the control signal S1 of comparator circuit 110 outputs becomes low level (Lo) from high level (Hi), otherwise when comparative voltage Vb1 was lower than reference voltage Va1, the control signal S1 of comparator circuit 110 outputs then became high level (Hi) from low level (Lo).With reference to the sequential chart of figure 6, reference voltage Va1 changes along with temperature, and comparative voltage Vb1 is along with the load current that becomes because of notebook 700 duties changes.With the state between the t2 to t3, when Va1 begins to change into less than Vb1, then the control signal S1 of comparator circuit 110 outputs then begins to become Lo from Hi, state with t8 to t9 time point, when Va1 begins to change into greater than Vb1, then the control signal S1 of comparator circuit 110 outputs then begins to become Hi from Lo.And the conversion slope between Hi and the Lo depends on the numerical value of resistance R 11 and capacitor C 11.When Va1 equaled Vb1, control signal S1 then reached the definite value between a Hi and the Lo, shown in the state of t17 time point.
One preferred embodiment of second control assembly 200 as shown in Figure 3 comprises a comparator circuit 210 and an oscillatory circuit 220 in second control assembly 200.One input end of comparator circuit 210 is accepted control signal S1 or S3, and another input end then is connected in oscillatory circuit 220.Oscillatory circuit 220 produces a triangular wave clock signal Tb, exports the pin 751 of a corresponding pulse width control signal S2 to CPU 750 behind comparator circuit 210 comparison control signal S1 and the triangular wave clock signal Tb, shown in the sequential chart of Fig. 6.When control signal S2 was Hi, CPU 750 was to carry out computing work at a high speed, and when control signal S2 was Lo, CPU 750 carried out computing work with low speed, adjusted the power consumption of the duty of CPU 750 with control notebook 700 by pulsewidth.When external power source converter 710 reached peak power, control signal S2 high-voltage level ratio and then reduced, and power consumption also and then reduces simultaneously.
By Fig. 3, above-mentioned oscillatory circuit 220 is by resistance R 20, R21, R22, R23, capacitor C 20 is formed with operational amplifier A 20, but do not limit the composed component of oscillatory circuit 220, as long as can produce a clock signal Tb, make comparator circuit 210 outputs one corresponding pulse width control signal S2, all be contained in the scope of oscillatory circuit 220.
One preferred embodiment of the 3rd control assembly 300 as shown in Figure 4, the 3rd control assembly 300 are connected in and comprise a comparator circuit 310 and a temperature sensor 320 in battery 720, the three control assemblies 300.Temperature sensor 320 comprises a thermistor.The positive input terminal of comparator circuit 310 is connected in temperature sensor 320, with the voltage of temperature sensor 320 2 ends as a reference voltage Va3, effect because of temperature sensor 320, this reference voltage Va3 will change magnitude of voltage along with temperature, voltage reduced when temperature raise, otherwise voltage raises when temperature reduces.The negative input end of comparator circuit 310 is connected in a resistance R 30, and the load current of notebook 700 R30 that flows through produces a comparative voltage Vb3.As shown in Figure 7, output one control signal S3 behind comparator circuit 310 comparison reference voltage Va3 and the comparative voltage Vb3, with the state between the t2 to t3, begin to change into when being higher than reference voltage Va3 as comparative voltage Vb3, the control signal S3 of comparator circuit 110 outputs then begins to become Lo from Hi, otherwise, with the state of t8 to t9 time point, when comparative voltage Vb3 begins to change into when being lower than reference voltage Va3, the control signal S3 of comparator circuit 310 outputs then begins to become Hi from Lo.
Detect the state of temperature of battery 720 in the 3rd control assembly 300, when the power supply of notebook 700 is powered by external power source converter 710, then the 3rd control assembly 300 is not worked, and transmits control signal S1 by first control assembly, 100 corresponding temperatures and load current and controls second control assembly 200 and the 4th control assembly 400.Power failure when external power source converter 710, when providing notebook 700 power supplys by battery 720, charging unit 730 stops charging, the 4th control assembly 400 of control charging unit 730 also quits work, the power consumption of notebook 700 then transmits control signal S3 by the 3rd control assembly 300 corresponding temperatures and load current, control second control assembly 200, and then control CPU750 duty, with the power consumption of control notebook 700.
Sequential chart with reference to figure 7, when notebook 700 provides power supply by battery 720, control the power consumption of notebook 700 with the control signal S3 of the 3rd control assembly, its control method is identical with the control signal S1 of first control assembly, and the Hi of control signal S3 and the conversion slope between the Lo depend on the numerical value of resistance R 31 and capacitor C 31.
The charging current of control signal S1 control charging unit 730 is accepted in one preferred embodiment of the 4th control assembly 400 as shown in Figure 5, the 4th control assembly 400.When the control signal S1 voltage of first control assembly, 100 outputs descended, the pin position 731 of the 4th control assembly 400 control charging units 730 reduced charging current.The 4th control assembly 400 comprises R41, R42, R43 three resistance, its three resistance, one end is connected in pin position 731 jointly, the other end is connected to certain voltage source, control signal S1 and ground connection, adjusts the decline ratio and the minimum charge current of charging current by the numerical value of adjusting R41, R42, R43 three resistance.
Can carry out application implementation miscellaneous in the technological thought scope of the present invention, for example, the actual numerical value of above-mentioned each element is not limited, and can cooperate actual applicable cases to set suitable component value.Suchlike application implementation also should be contained in the claim scope of the present invention.
By the invention described above preferred embodiment as can be known, use the present invention and have following advantage:
1. according to variation of temperature, external power source converter and battery are dynamically adjusted output power.
2. no matter output power and environment temperature, the maximum temperature of external power source converter and battery can not surpass setting value, to guarantee the performance life-saving.
3. because of along with temperature is automatically adjusted power consumption, notebook can cooperate the external power source converter and the battery of multiple different output power.
4. the external power source converter only need be designed to the numerical value of the normal power consumption of notebook, need not be designed to maximum power consumption, saves production cost.
5. the external power source converter that but design volume is less, weight is lighter.
Though the present invention with preferred embodiment openly as above; right its is not that any those skilled in the art are under the situation that does not break away from the spirit and scope of the present invention in order to qualification the present invention; can change and modification, so protection scope of the present invention is as the criterion with the claim institute restricted portion that is proposed.
Claims (18)
1. a temperature control system is used for a notebook, comprises at least:
One first control assembly is positioned at an external power source converter, and the temperature that should the external power source converter and the variation of load current are exported one first control signal; And
One second control assembly is connected in an operation processing unit of this notebook, and when this notebook during by this external power source converter power supply, this second control assembly is accepted the duty that this first control signal is controlled this operation processing unit.
2. temperature control system as claimed in claim 1, wherein also comprise one the 3rd control assembly, battery adjacent to this notebook, the temperature that should battery and the variation of load current are exported one the 3rd control signal, when this notebook during by this powered battery, this second control assembly is accepted the 3rd control signal and is controlled this operation processing unit.
3. temperature control system as claimed in claim 2, wherein also comprise one the 4th control assembly, be connected in a charging unit of this notebook, when this notebook was powered by this external power source converter, the 4th control assembly was accepted the charging current that this first control signal is controlled this charging unit.
4. temperature control system as claimed in claim 1, wherein this first control assembly comprises: a comparator circuit; An and temperature sensor, one input end of this comparator circuit is imported the reference voltage that this temperature sensor produces, another input end is imported the comparative voltage that this notebook load current produces, and this comparator circuit is relatively exported this first control signal behind this reference voltage and this comparative voltage.
5. temperature control system as claimed in claim 1, wherein this second control assembly comprises: a comparator circuit; An and oscillatory circuit, one input end of this comparator circuit is imported the clock signal that this oscillatory circuit produces, another input end is imported this first control signal, this comparator circuit relatively after this clock signal and this control signal output one secondary signal to control this operation processing unit.
6. temperature control system as claimed in claim 2, wherein the 3rd control assembly comprises: a comparator circuit; An and temperature sensor, one input end of this comparator circuit is imported the reference voltage that this temperature sensor produces, another input end is imported the comparative voltage that this notebook load current produces, and this comparator circuit is relatively exported the 3rd control signal behind this reference voltage and this comparative voltage.
7. temperature control system as claimed in claim 3, wherein the 4th control assembly comprises three resistance, and this three resistance is connected in this charging unit jointly, and an end of this three resistance is connected in the certain voltage source; The other end connects this control signal; And an end ground connection again, adjust the decline ratio and the minimum charge current of charging current by the numerical value of adjusting this three resistance.
8. a temperature control system is used for a notebook, comprises at least:
One first control assembly is positioned at an external power source converter, and the temperature that should the external power source converter and the variation of load current are exported a control signal;
One second control assembly is connected in an operation processing unit of this notebook, and when this notebook during by this external power source converter power supply, this second control assembly is accepted the duty that this control signal is controlled this operation processing unit; And
One the 3rd control assembly, battery adjacent to this notebook, the temperature that should battery and the variation of load current are exported another control signal, when this notebook during by this powered battery, this second control assembly is accepted the duty that this another control signal is controlled this operation processing unit.
9. temperature control system as claimed in claim 8, wherein also comprise one the 4th control assembly, be connected in a charging unit of this notebook, when this notebook was powered by this external power source converter, the 4th control assembly was accepted the charging current that this control signal is controlled this charging unit.
10. temperature control system as claimed in claim 8, wherein this first control assembly comprises: a comparator circuit; An and temperature sensor, one input end of this comparator circuit is imported the reference voltage that this temperature sensor produces, another input end is imported the comparative voltage that this notebook load current produces, and this comparator circuit is relatively exported this control signal behind this reference voltage and this comparative voltage.
11. temperature control system as claimed in claim 8, wherein this second control assembly comprises: a comparator circuit; An and oscillatory circuit, one input end of this comparator circuit is imported the clock signal that this oscillatory circuit produces, another input end is imported this control signal or this another control signal, and this comparator circuit is the duty of output one this operation processing unit of signal controlling after this clock signal and this control signal or this another control signal relatively.
12. temperature control system as claimed in claim 8, wherein the 3rd control assembly comprises: a comparator circuit; An and temperature sensor, one input end of this comparator circuit is imported the reference voltage that this temperature sensor produces, another input end is imported the comparative voltage that this notebook load current produces, and this comparator circuit is relatively exported this another control signal behind this reference voltage and this comparative voltage.
13. temperature control system as claimed in claim 9, wherein the 4th control assembly comprises three resistance, and an end of this three resistance is connected in this charging unit jointly, and the other end of this three resistance is connected to the certain voltage source; This control signal; And ground connection, adjust the decline ratio and the minimum charge current of charging current by the numerical value of adjusting this three resistance.
14. a temperature control system is used for a notebook, comprises at least:
One first control assembly is positioned at an external power source converter, and the temperature that should the external power source converter and the variation of load current are exported a control signal;
One second control assembly is connected in an operation processing unit of this notebook;
One the 3rd control assembly adjacent to a battery of this notebook, is exported another control signal to the temperature that should battery and the variation of load current; And
One the 4th control assembly is connected in a charging unit of this notebook,
When this notebook is powered by this external power source converter, this second control assembly is accepted the duty that this control signal is controlled this operation processing unit, simultaneously, the 4th control assembly is accepted the charging current that this control signal is controlled this charging unit, when this notebook during by this powered battery, this second control assembly is accepted the duty that this another control signal is controlled this operation processing unit.
15. temperature control system as claimed in claim 14, wherein this first control assembly comprises: a comparator circuit; An and temperature sensor, one input end of this comparator circuit is imported the reference voltage that this temperature sensor produces, another input end is imported the comparative voltage that this notebook load current produces, and this comparator circuit is relatively exported this control signal behind this reference voltage and this comparative voltage.
16. temperature control system as claimed in claim 14, wherein this second control assembly comprises: a comparator circuit; An and oscillatory circuit, one input end of this comparator circuit is imported the clock signal that this oscillatory circuit produces, another input end is imported this control signal or this another control signal, and this comparator circuit is the duty of output one this operation processing unit of signal controlling after this clock signal and this control signal or this another control signal relatively.
17. temperature control system as claimed in claim 14, wherein the 3rd control assembly comprises: a comparator circuit; An and temperature sensor, one input end of this comparator circuit is imported the reference voltage that this temperature sensor produces, another input end is imported the comparative voltage that this notebook load current produces, and this comparator circuit is relatively exported this another control signal behind this reference voltage and this comparative voltage.
18. temperature control system as claimed in claim 14, wherein the 4th control assembly comprises three resistance, and an end of this three resistance is connected in this charging unit jointly, and the other end of this three resistance is connected to the certain voltage source; This control signal; And ground connection, adjust the decline ratio and the minimum charge current of charging current by the numerical value of adjusting this three resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100780659A CN100375943C (en) | 2005-06-14 | 2005-06-14 | Temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100780659A CN100375943C (en) | 2005-06-14 | 2005-06-14 | Temperature control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1881138A true CN1881138A (en) | 2006-12-20 |
| CN100375943C CN100375943C (en) | 2008-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100780659A Expired - Fee Related CN100375943C (en) | 2005-06-14 | 2005-06-14 | Temperature control system |
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| Country | Link |
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| CN (1) | CN100375943C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111971073A (en) * | 2018-04-17 | 2020-11-20 | 费得噶瑞高压灭菌器股份有限公司 | Improved system for energy efficient temperature measurement in harsh atmospheric environments |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11262832B2 (en) | 2018-03-19 | 2022-03-01 | Hewlett-Packard Development Company, L.P. | Power consumption control of computing devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1169797A (en) * | 1994-11-10 | 1998-01-07 | 杜拉塞奥公司 | Smart battery device |
| CN1282897A (en) * | 1997-05-27 | 2001-02-07 | 陈树锦 | Intelligent phase-advancing power supply management system for computer |
| US7161513B2 (en) * | 1999-10-19 | 2007-01-09 | Rambus Inc. | Apparatus and method for improving resolution of a current mode driver |
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2005
- 2005-06-14 CN CNB2005100780659A patent/CN100375943C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111971073A (en) * | 2018-04-17 | 2020-11-20 | 费得噶瑞高压灭菌器股份有限公司 | Improved system for energy efficient temperature measurement in harsh atmospheric environments |
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| CN100375943C (en) | 2008-03-19 |
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