CN206772462U - A kind of system that temperature is obtained by test pressure - Google Patents
A kind of system that temperature is obtained by test pressure Download PDFInfo
- Publication number
- CN206772462U CN206772462U CN201720423280.6U CN201720423280U CN206772462U CN 206772462 U CN206772462 U CN 206772462U CN 201720423280 U CN201720423280 U CN 201720423280U CN 206772462 U CN206772462 U CN 206772462U
- Authority
- CN
- China
- Prior art keywords
- resistance
- pressure
- value
- temperature
- variable resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model embodiment discloses a kind of system that temperature is obtained by test pressure, including：Pressure sensor, pressure and temp converter, thermocouple simulator circuit, control centre；The pressure sensor sends the pressure value of acquisition to pressure and temp converter, the pressure value measured is converted into by temperature value by Antoine equation calculator by pressure and temp converter, and temperature value is sent to thermocouple simulator circuit, thermocouple simulator circuit is according to the temperature value of reception, corresponding resistance value is converted into, and resistance value is exported to control centre.The utility model passes through the improvement to digital regulation resistance, the full accuracy of digital regulation resistance is set to reach 0.3 ohm, compared with former full accuracy, improve nearly 100 times, the resistance value that the pressure of the compressed air measured by the utility model obtains, the resistance value obtained with saturated vapor by temperature sensor is completely the same, and the utility model is simple in construction, easy to use, security performance is higher.
Description
Technical field
Autoclave sterilizer technical field is the utility model is related to, more particularly to it is a kind of suitable in high pressure steam sterilization
Saturated vapor is replaced with compressed air in device, the system that autoclave sterilizer temperature is obtained by test pressure.
Background technology
In the prior art, autoclave sterilizer is mainly sterilized using high-pressure saturated steam, and this mode is present
Larger potential safety hazard, and the more energy is expended, high-pressure saturated steam, relatively safety are replaced with compressed air, in high pressure
In steam sterilizer system, temperature sensor mainly uses thermal resistance, if the pressure value of compressed air is changed into phase
Etc. temperature value corresponding to pressure saturated vapor, then corresponding temperature value is converted into the resistance value of corresponding thermal resistance, will changed
Obtained resistance value replaces temperature sensor, that is, realizes the function of system, conventionally, as test pressure obtains temperature
The internal resistance connected mode of the thermocouple simulator of degree is unreasonable, causes its resistance value exported can not be applied to high pressure saturation
The temperature value of steam, equally, the temperature value of compressed air it is not suitable for yet.
Therefore, prior art needs to improve.
Utility model content
According to the one side of the utility model embodiment, there is provided it is a kind of by test pressure obtain temperature system,
Including：
Pressure sensor, pressure and temp converter, thermocouple simulator circuit, control centre；
The pressure for the compressed air that the pressure sensor is used in testing high voltage steam sterilizer, and by the pressure of acquisition
Value sends the compressed air that will be measured by Antoine equation calculator to pressure and temp converter, the pressure and temp converter
Pressure value be converted into the temperature value of compressed air, and temperature value is sent to thermocouple simulator circuit, thermocouple simulator
Circuit is converted into corresponding resistance value according to the temperature value of reception, and resistance value is exported to control centre, is controlled for control centre
The working condition of autoclave sterilizer processed provides foundation.
In another embodiment based on the system that temperature is obtained above by test pressure, the thermocouple simulator
Circuit includes：
Governor circuit and digital potentiometer circuit；
The governor circuit is used for AD data acquisitions and data operation, by gathering the temperature value of pressure and temp converter,
And by calculating temperature value, the resistance value of digital regulation resistance is adjusted, the digital regulation resistance circuit passes through iic bus and master control
Circuit connects..
In another embodiment based on the system that temperature is obtained above by test pressure, the governor circuit includes
STC12C5616AD singlechip chips.
In another embodiment based on the system that temperature is obtained above by test pressure, the digital regulation resistance electricity
Road includes x9221 digital regulation resistance chips.
In another embodiment based on the system that temperature is obtained above by test pressure, the x9221 numerals electricity
Position device chip includes first passage, second channel, and the variable resistor R1 of first passage maximum value is 2K ohms, described
The variable resistor R2 of second channel maximum value is 2K ohms, and the variable resistor R1 and variable resistor R2 are in parallel；
The x9221 digital regulation resistances chip also includes resistance R3 and resistance R4, the resistance of the resistance R3 and resistance R4
Be 200 ohm, the resistance R3 with it is in parallel after variable resistor R1, variable resistor R2 connect, the resistance R4 and can power transformation
It is in parallel to hinder R1, variable resistor R2, resistance R3.
In another embodiment based on the system that temperature is obtained above by test pressure, the governor circuit passes through
Adjust the variable resistor R1 of the first passage of the x9221 digital regulation resistance chips and variable resistor R2 of second channel resistance regulation
The resistance value of digital regulation resistance.
Compared with prior art, the utility model has advantages below：
The system described in the utility model for obtaining temperature by test pressure makes number by the improvement to digital regulation resistance
The full accuracy of word potentiometer can reach 0.3 ohm, and compared with former 32 ohm of full accuracy, precision nearly improves 100 times,
Meanwhile the resistance value that the pressure of the compressed air measured by the utility model obtains, pass through temperature sensor with saturated vapor
The resistance value of acquisition is completely the same, also, the utility model is simple in construction, easy to use, and security performance is higher.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing of a part for constitution instruction describes embodiment of the present utility model, and is used for together with description
Explain principle of the present utility model.
Referring to the drawings, according to following detailed description, the utility model can be more clearly understood, wherein：
Fig. 1 is the structural representation of one embodiment of the system of the present utility model that temperature is obtained by test pressure.
Fig. 2 is the circuit diagram of one embodiment of the system of the present utility model that temperature is obtained by test pressure.
In figure：1 pressure sensor, 2 pressure and temp converters, 3 thermocouple simulator circuits, 31 governor circuits, 32 numerals
Potentiometer circuit, 4 control centres.
Embodiment
Various exemplary embodiments of the present utility model are described in detail now with reference to accompanying drawing.It should be noted that：It is unless another
Illustrate outside, the part and the positioned opposite of step, numerical expression and numerical value otherwise illustrated in these embodiments is unlimited
The scope of the utility model processed.
Simultaneously, it should be appreciated that for the ease of description, the size of the various pieces shown in accompanying drawing is not according to reality
Proportionate relationship draw.
The description only actually at least one exemplary embodiment is illustrative to be never used as to this practicality below
New and its application or any restrictions used.
It may be not discussed in detail for technology, method and apparatus known to person of ordinary skill in the relevant, but suitable
In the case of, the technology, method and apparatus should be considered as part for specification.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it need not be further discussed in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is the structural representation of one embodiment of the system of the present utility model that temperature is obtained by test pressure,
As shown in figure 1, the system that temperature is obtained by test pressure includes：
Pressure sensor 1, pressure and temp converter 2, thermocouple simulator circuit 3, control centre 4；
The pressure for the compressed air that the pressure sensor 1 is used in testing high voltage steam sterilizer, and by the pressure of acquisition
Force value sends the compression that will be measured by Antoine equation calculator to pressure and temp converter 2, the pressure and temp converter 2
The pressure value of air is converted into the temperature value of compressed air, and temperature value is sent to thermocouple simulator circuit 3, thermocouple mould
Intend temperature value of the device circuit 3 according to reception, be converted into corresponding resistance value, and resistance value is exported to control centre 4, for control
Center 4 controls the working condition of autoclave sterilizer to provide foundation.
Calculating the relation between saturated vapour pressure and temperature by Antoine equation is：
Saturated vapor air pressure of the air pressure P when the temperature of water is T is represented, meets 10≤T ＜ 168, P unit is kPa, T
Unit for degree Celsius.
It can thus be concluded that：
Because the resistance value of thermocouple and the relation formula of temperature are：
R=100+T × 0.382 (3)
R is resistance, and unit is ohm, and T is temperature, and unit is degree Celsius.
So by input temperature values, resistance value can be obtained, with reference to formula (1) (2) (3), it is known that, atmospheric pressure value is measured,
Resistance value can also be obtained.
From formula (3), if the precision of temperature survey is less than 1 degree Celsius, the computational accuracy of resistance value is less than
0.382 ohm, and in the prior art, digital regulation resistance of the resistance precision less than 0.382 ohm is not present, it is necessary to prior art
It is improved.
Fig. 2 be it is of the present utility model by test pressure obtain temperature system one embodiment circuit diagram, such as Fig. 2
Shown, the thermocouple simulator circuit 3 includes：
Governor circuit 31 and digital potentiometer circuit 32；
The governor circuit 31 is used for AD data acquisitions and data operation, by the temperature for gathering pressure and temp converter 2
Value, and by calculating temperature value, the resistance value of digital regulation resistance is adjusted, the digital regulation resistance circuit 32 passes through iic bus
It is connected with governor circuit 31..
The governor circuit 31 includes STC12C5616AD singlechip chips.
The digital regulation resistance circuit 32 includes x9221 digital regulation resistance chips.
The x9221 digital regulation resistances chip includes first passage, second channel, the variable resistor R1 of the first passage
Maximum value be 2K ohms, the variable resistor R2 of second channel maximum value is 2K ohms, the variable resistor R1
It is in parallel with variable resistor R2；Because variable resistor R1 and variable resistor R2 is in parallel, it can obtain variable resistor R1's and variable resistor R2
Parallel resistance is：
The x9221 digital regulation resistances chip also includes resistance R3 and resistance R4, the resistance of the resistance R3 and resistance R4
Be 200 ohm, the resistance R3 with it is in parallel after variable resistor R1, variable resistor R2 connect, the resistance R4 and can power transformation
It is in parallel to hinder R1, variable resistor R2, resistance R3.It can thus be concluded that the output resistance of x9221 digital regulation resistance chips is：
The governor circuit 31 is by adjusting the variable resistor R1 and second of the first passage of x9221 digital regulation resistance chips
The resistance value of the variable resistor R2 of passage resistance regulation digital regulation resistance.
The resistance resistance to be adjusted of two passages of x9221 digital regulation resistances, i.e. institute are obtained by the computing of governor circuit 31
The gear to be adjusted, it is necessary in the accuracy rating department in 0.3 Europe, that is, reach 1 degree Celsius of precision.Will in simulation trial program
Total resistance value is calculated in two resistance value gear gears from 0 to 63 of x9221 digital regulation resistances successively, then gathers and calculates with AD
The temperature value gone out compares, and retains if difference absolute value is less than 0.3 Europe, minimum value is obtained finally by sort algorithm,
Take that two gear values of full accuracy.
A kind of system that temperature is obtained by test pressure provided by the utility model is described in detail above,
Specific case used herein is set forth to principle of the present utility model and embodiment, and the explanation of above example is only
It is to be used to help understand method and its core concept of the present utility model；Meanwhile for those of ordinary skill in the art, foundation
Thought of the present utility model, there will be changes in specific embodiments and applications, in summary, in this specification
Appearance should not be construed as to limitation of the present utility model.
Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, is not limited to this
Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art
For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic
Progress equivalent substitution, all within the spirit and principles of the utility model, any modification, equivalent substitution and improvements made etc.,
It should be included within the scope of protection of the utility model.
Claims (6)
- A kind of 1. system that temperature is obtained by test pressure, it is characterised in that including：Pressure sensor, pressure and temp converter, thermocouple simulator circuit, control centre；The pressure for the compressed air that the pressure sensor is used in testing high voltage steam sterilizer, and the pressure value of acquisition is sent out Deliver to pressure and temp converter, the pressure and temp converter is by Antoine equation calculator by the pressure of the compressed air measured Force value is converted into the temperature value of compressed air, and temperature value is sent to thermocouple simulator circuit, thermocouple simulator circuit According to the temperature value of reception, corresponding resistance value is converted into, and resistance value is exported to control centre, it is high for control centre's control The working condition of steam sterilizer is pressed to provide foundation.
- 2. the system according to claim 1 that temperature is obtained by test pressure, it is characterised in that the thermocouple simulation Device circuit includes：Governor circuit and digital potentiometer circuit；The governor circuit is used for AD data acquisitions and data operation, by gathering the temperature value of pressure and temp converter, and leads to Calculating temperature value is crossed, adjusts the resistance value of digital regulation resistance, the digital regulation resistance circuit passes through iic bus and governor circuit Connection.
- 3. the system according to claim 2 that temperature is obtained by test pressure, it is characterised in that the governor circuit bag Include STC12C5616AD singlechip chips.
- 4. the system according to claim 2 that temperature is obtained by test pressure, it is characterised in that the digital regulation resistance Circuit includes x9221 digital regulation resistance chips.
- 5. the system according to claim 4 that temperature is obtained by test pressure, it is characterised in that the x9221 numerals Potentiometer chip includes first passage, second channel, and the variable resistor R1 of first passage maximum value is 2K ohms, institute The maximum value for stating the variable resistor R2 of second channel is 2K ohms, and the variable resistor R1 and variable resistor R2 are in parallel；The x9221 digital regulation resistances chip also includes resistance R3 and resistance R4, the resistance of the resistance R3 and resistance R4 are 200 ohm, the resistance R3 connects with variable resistor R1, the variable resistor R2 after parallel connection, the resistance R4 and variable resistor R1, Variable resistor R2, resistance R3 are in parallel.
- 6. the system according to claim 5 that temperature is obtained by test pressure, it is characterised in that the governor circuit leads to The resistance for crossing the variable resistor R1 of the first passage of adjustment x9221 digital regulation resistance chips and the variable resistor R2 of second channel is adjusted Save the resistance value of digital regulation resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720423280.6U CN206772462U (en) | 2017-04-20 | 2017-04-20 | A kind of system that temperature is obtained by test pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720423280.6U CN206772462U (en) | 2017-04-20 | 2017-04-20 | A kind of system that temperature is obtained by test pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206772462U true CN206772462U (en) | 2017-12-19 |
Family
ID=60634358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720423280.6U Expired - Fee Related CN206772462U (en) | 2017-04-20 | 2017-04-20 | A kind of system that temperature is obtained by test pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206772462U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179140A (en) * | 2017-04-20 | 2017-09-19 | 广州市豪尔生医疗设备有限公司 | A kind of system that temperature is obtained by test pressure |
-
2017
- 2017-04-20 CN CN201720423280.6U patent/CN206772462U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179140A (en) * | 2017-04-20 | 2017-09-19 | 广州市豪尔生医疗设备有限公司 | A kind of system that temperature is obtained by test pressure |
| CN107179140B (en) * | 2017-04-20 | 2023-08-11 | 广州市豪尔生医疗设备有限公司 | System for obtain temperature through test pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106326532B (en) | IGBT heat transfer multi-time scale model modeling method | |
| Xiang-Rong et al. | Circuit realization of the fractional-order unified chaotic system | |
| CN107069741A (en) | A kind of novel linear tidal current computing method | |
| CN103644036A (en) | Control method for engine plateau dynamic performance | |
| CN104062618B (en) | A kind of capacitive apparatus on-Line Monitor Device method of calibration of dual signal source | |
| CN206772462U (en) | A kind of system that temperature is obtained by test pressure | |
| WO2019223048A1 (en) | Delayed power system stability analysis method based on low-order eigd | |
| CN107179140A (en) | A kind of system that temperature is obtained by test pressure | |
| CN106092358A (en) | A kind for the treatment of method and apparatus of resistance sensor signal | |
| CN104655111B (en) | Method and device for simulating laser detector | |
| CN101160550A (en) | Model structure parameter decision method, parameter decision device, control device, and temperature adjustment device | |
| CN102628741A (en) | Online detecting device of electric control silicon oil fan | |
| CN206960995U (en) | One kind exhausts pipe reference current source circuit | |
| CN204347653U (en) | A kind of real-time temperature control equipment | |
| CN103196582A (en) | Device using multiple groups of digital potentiometers to simulate Pt 1000 platinum resistor and method of device simulating Pt 1000 platinum resistor | |
| CN108061866A (en) | Simulate the electronic load device and method of RLC loads | |
| CN102662319B (en) | A simulator for generating great inertia and delay controlled object signals | |
| CN205958620U (en) | Portable liter spreads and moves specialized tool | |
| CN108594646A (en) | A kind of unstable Continuous-time System Identification method based on filtering about point-score | |
| CN103196581A (en) | Device using multiple groups of digital potentiometers to simulate Pt 1000 platinum resistor and method of device simulating Pt 1000 platinum resistor | |
| CN202631232U (en) | Electric control silicone oil fan online detection apparatus | |
| CN109766632A (en) | A kind of system emulation analysis method of mechanical refrigerator temperature control | |
| CN203643041U (en) | Analog thermal-resistance thermocouple isolator | |
| Lin et al. | Design of PID temperature controlling system based on virtual instrument technique | |
| Teng et al. | M-Smart: An Improved Multi-style Engineering Design CAD System for Clothing Thermal Functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171219 Termination date: 20210420 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |