CN2613233Y - Temp detector for pouring heating therapy - Google Patents
Temp detector for pouring heating therapy Download PDFInfo
- Publication number
- CN2613233Y CN2613233Y CN 03245069 CN03245069U CN2613233Y CN 2613233 Y CN2613233 Y CN 2613233Y CN 03245069 CN03245069 CN 03245069 CN 03245069 U CN03245069 U CN 03245069U CN 2613233 Y CN2613233 Y CN 2613233Y
- Authority
- CN
- China
- Prior art keywords
- temperature
- chip
- critesistor
- erasable storage
- perfusion
- 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 And Recording Apparatus For Diagnosis (AREA)
Abstract
A temperature detector used by reperfusion warming therapy relates to the temperature detecting technological field, comprising an orderly cascaded temperature transmission circuit, an A/D chip, and a single chip microcomputer connected with the A/D chip, which is characterized in that the single chip microcomputer is also connected with an erasable storage chip. Since the utility model adopts the erasable storage chip, correcting data of a temperature sensing element can be stored inside, when changing the temperature sensing element, only downing correspondent corrected data to the erasable storage chip is necessary, the performance process is simple, and the using is flexible and convenient.
Description
Technical field:
The temperature-detecting device that perfusion alternating temperature therapy is used relates to the temperature detection technical field.
Background technology:
The perfusion temperature therapy is a kind of Therapeutic Method at the middle and terminal cancer patient.It mainly is to utilize the perfusion temperature varying system, and blood of human body is extracted out, in external rising, flows back to human body then, forms the system that a blood circulation heats up.The perfusion temperature varying system of prior art mainly is made up of heating water tank, heat exchanger, blood pump, water pump, blood heat Acquisition Instrument and computer, heating power by the computer control water tank, the temperature of water is raise, thereby make the water of the heat exchanger of flowing through and blood carry out heat exchange, constantly heat systemic blood by blood circulation, the whole temperature of human body is raise and maintain on the definite value, thereby reach the purpose of kill cancer cell.Owing to be at human body therapy, therefore, necessary with sensitivity and the higher measuring device of precision, could control the safety that improves therapeutic process, present many highly sensitive temperature-sensing elements all have temperature and voltage is nonlinear feature, and different temperature-sensing elements all has corresponding correction tables of data.Prior art is that the correction data are placed in the program, when using other temperature-sensing element instead, needs update routine, has increased the complexity of operation like this, uses underaction conveniently.
The utility model content:
The purpose of this utility model is, a kind of temperature-detecting device that the intensification therapy is used that pours into has been proposed, this device utilize an erasable storage chip with the correction data storage of temperature-sensing element in wherein, during actual measurement, will revise data accordingly and access, measurement data will be revised, when changing temperature-sensing element, only need to download the corresponding data of revising in erasable storage chip, operating process is simple, and it is comparatively convenient to use; Cooperate high-precision A/D chip in addition, increased the precision of measuring.
The temperature-detecting device that this perfusion alternating temperature therapy is used, contain placed in-line successively temperature transmission circuit, AD chip (U1) and the single-chip microcomputer (U2) that is connected with described A/D chip (U1) is characterized in that described single-chip microcomputer (U2) also connects an erasable storage chip (U3).
Described temperature transmission circuit contains critesistor (Rt) and the precision resistance (R1) that is serially connected between dc source and the ground, also be parallel with a precision resistance (R2) at the two ends of described critesistor (Rt), the end that described critesistor (Rt), precision resistance (R1) and precision resistance (R2) are connected jointly is the voltage output end that is connected with the input of above-mentioned A/D chip.
The model of described erasable storage chip (U3) is 24C08.
The model of described AD chip (U1) is ADS1241.
Evidence, the temperature-detecting device that the use perfusion intensification therapy that this utility model proposed is used is when changing temperature-sensing element, only need to download the corresponding data of revising in erasable storage chip, cover and transfer original data, operating process is simple, be easy to use, reached its intended purposes.
Description of drawings:
Fig. 1 is circuit theory diagrams of the present utility model.
The specific embodiment:
The accompanying drawings specific embodiment of the present utility model.
The model of the erasable storage chip U3 (EEROM) that this utility model adopted is for depositing 24C08, and its data terminal SDA links to each other with the data terminal of single-chip microcomputer U2, is used for receiving and transmitting data; Its SCL end is the clock end.This device not only can be revised data for the temperature transmission circuit that this utility model proposed, when with different temperature transmission circuit, this device only need downloads to the correction data of this temperature transmission circuit the EEROM from computer, override original data, just can solve the common question of different sensors probe.At first carry out analog digital conversion during measurement by serial a/d chip U1, numerical value after will changing then utilizes universal serial bus to pass in the single-chip microcomputer, single-chip microcomputer is according to the correction value that reads from EEROM, measurement data is revised, be converted to temperature value at last, by the time after computer transmitted the order of reading temperature value by serial ports, single-chip microcomputer spread out of temperature value.U4 is the cpu chip of computer among the figure.
Pick off is selected semiconductor thermistor Rt in this temperature measuring equipment, this critesistor has highly sensitive advantage, be very suitable for pouring into the temperature detection usefulness of alternating temperature therapy, because the temperature-sensing element (device) that critesistor Rt is the semi-conducting material that utilizes resistivity to change with temperature to be made, critesistor Rt has very big negative value temperature coefficient, can measure small variation of temperature, but the resistance value of critesistor is the index relation with the temperature tool, have very strong non-linear, even under the little situation of measured temperature scope, also can bring difficulty for measurement.Therefore, in order to realize the accurate measurement of temperature, we at first will utilize the characteristic linearisation of critesistor the storage chip in the checkout gear to carry out data correction, thereby reach high-precision purpose then.With the linearizing mode of the characteristic of critesistor as shown in Figure 1, in the temperature transmission circuit, the precision resister R2 in parallel of critesistor Rt elder generation is connected with a precision resister R1 again, the constant pressure source power supply is used at two ends, because connection in series-parallel precision resister, make the electric current that passes through the critesistor Rt that flows through in measuring range very little, about 10uA is not so the heat effect of critesistor Rt self can be considered.Behind the critesistor temperature-sensitive, its change in resistance, the voltage of its outfan is respective change also, and this magnitude of voltage is exported to the A/D chip, carries out analog digital conversion by the A/D chip, delivers to then to change temperature value in the single-chip microcomputer into, prepares to be sent in the computer to handle.Resistance R 1 and the common linearized network that constitutes Rt of R2.The correction data storage of critesistor directly accesses when needing and gets final product in erasable storage chip EEROM.
Because whole perfusion temperature elevation system requires sensitivity higher, therefore selected the high-precision A/D chip-ADS1241 chip of TI company for use, its serial output can reach 24, therefore has higher resolution.The connected mode of this each pin of chip offers some clarification in its description, wherein any end in the Ain0/D0 of A/DS1241 chip～Ain7/D7 end all can be used as the input of measuring-signal, the outfan Dout end of A/DS1241 chip links to each other with the signal input part RA2/AN2 of single-chip microcomputer PC16C77, send the measurement data behind the digitized to single-chip microcomputer, the Din end of A/DS1241 chip connects the RA3/AN3/VREF of single-chip microcomputer PC16C77, receives the read instruction that single-chip microcomputer transmits.
Claims (4)
1, pours into the temperature-detecting device that the intensification therapy is used, contain placed in-line successively temperature transmission circuit, A/D chip (U1) and the single-chip microcomputer (U2) that is connected with described A/D chip (U1) is characterized in that described single-chip microcomputer (U2) also connects an erasable storage chip (U3).
2, the temperature-detecting device used of perfusion intensification therapy as claimed in claim 1, it is characterized in that, described temperature transmission circuit contains critesistor (Rt) and the precision resistance (R1) that is serially connected between dc source and the ground, also be parallel with a precision resistance (R2) at the two ends of described critesistor (Rt), the end that described critesistor (Rt), precision resistance (R1) and precision resistance (R2) are connected jointly is the voltage output end that is connected with the input of above-mentioned A/D chip.
3, the temperature-detecting device used of perfusion intensification therapy as claimed in claim 2 is characterized in that the model of described erasable storage chip (U3) is 24C08.
4, the temperature-detecting device used of perfusion intensification therapy as claimed in claim 1, the model that it is characterized in that described A/D chip (U1) is ADS1241.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03245069 CN2613233Y (en) | 2003-04-11 | 2003-04-11 | Temp detector for pouring heating therapy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03245069 CN2613233Y (en) | 2003-04-11 | 2003-04-11 | Temp detector for pouring heating therapy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2613233Y true CN2613233Y (en) | 2004-04-28 |
Family
ID=34251453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03245069 Expired - Fee Related CN2613233Y (en) | 2003-04-11 | 2003-04-11 | Temp detector for pouring heating therapy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2613233Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342827A (en) * | 2010-08-06 | 2012-02-08 | 陈哲 | Novel electronic clinical thermometer |
| CN104055491A (en) * | 2014-07-07 | 2014-09-24 | 上海伽格医疗科技发展有限公司 | Medical fully-sealed induction-type electronic thermometer |
-
2003
- 2003-04-11 CN CN 03245069 patent/CN2613233Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102342827A (en) * | 2010-08-06 | 2012-02-08 | 陈哲 | Novel electronic clinical thermometer |
| CN104055491A (en) * | 2014-07-07 | 2014-09-24 | 上海伽格医疗科技发展有限公司 | Medical fully-sealed induction-type electronic thermometer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107941363B (en) | Temperature pick-up device and method based on program-controlled double constant-current supplies | |
| CN106569525B (en) | A kind of digital constant temperature control circuit applied to moving base gravimeter | |
| JPS62502494A (en) | electronic thermometer | |
| CN102722197A (en) | Self-calibration temperature control device and method | |
| CN101553717A (en) | Temperature sensor configuration detection in process variable transmitter | |
| CN205879394U (en) | Temperature measuring circuit and adopt high accuracy temperature measuring device of this circuit | |
| CN110018350A (en) | A kind of conductor DC resistance quick, intelligent measuring system online | |
| CN2613233Y (en) | Temp detector for pouring heating therapy | |
| CN105222843A (en) | A kind of thermal type gas quality flow meter based on tabilized current power supply | |
| CN210775298U (en) | Stem flow signal acquisition node and heat source self-adaptive stem flow measuring system based on temperature compensation and using same | |
| CN105159349B (en) | A kind of temperature change analogue means and method | |
| CN107976234A (en) | A kind of water meter meter correcting system and its correction method | |
| CN203629691U (en) | An intelligent mini-sized temperature recorder | |
| CN203012544U (en) | Intelligent linear heating temperature control apparatus | |
| CN102955482B (en) | Intelligent linear temperature rise control method | |
| CN205175478U (en) | Hot type gas sensor for mass flow meter based on adjustable constant current source | |
| CN205899425U (en) | Full -automatic temperature compensated equipment of APD array chip offset voltage | |
| CN101387893A (en) | Electrical heating power closed-loop control method | |
| CN204719462U (en) | A kind of manifold pressure sensor microcomputer measuring and controlling plug-in card able to programme | |
| CN209878176U (en) | Low-power consumption temperature measuring probe | |
| CN207163947U (en) | Flow thermal conductivity coefficient measuring instrument | |
| CN105424212A (en) | High-precision temperature measurement system based on resistance value comparison method | |
| CN103616082B (en) | A kind of intelligent miniature temperature recorder | |
| CN202153161U (en) | CAN bus-type intelligent platinum resistance thermometer | |
| CN204330167U (en) | A kind of temperature measuring equipment based on platinum resistance thermometer sensor, |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |