CN205607560U - High accuracy electron temperature meter - Google Patents
High accuracy electron temperature meter Download PDFInfo
- Publication number
- CN205607560U CN205607560U CN201620352313.8U CN201620352313U CN205607560U CN 205607560 U CN205607560 U CN 205607560U CN 201620352313 U CN201620352313 U CN 201620352313U CN 205607560 U CN205607560 U CN 205607560U
- Authority
- CN
- China
- Prior art keywords
- resistance
- connects
- chip
- potentiometer
- diode
- 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
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a high accuracy electron temperature meter, including resistance R3, chip IC1, diode D1 summation potential ware RP2, resistance R3's the one end VCC that connects, resistance R3's other end connecting resistance R1, resistance R4, resistance R6, resistance R8, resistance R12, resistance R13, potentiometre RP1's stiff end and gauge outfit P and ground connection, resistance R4's other end connecting resistance R5, another stiff end of resistance R7 summation potential ware RP1, resistance R5's the other end connecting resistance R2 and resistance R6's the other end. The utility model discloses high accuracy electron temperature meter simple structure, components and parts are few, adopt thermistor to combine ordinary resistance element to constitute non -equilibrium temperature measurement electric bridge to carry out the amplification operation that the two -stage has the complex feedback to measuring -signal, it increases the measuring degree of accuracy to get into, consequently have with low costs, the precision is high and convenient to use's advantage.
Description
Technical field
This utility model relates to a kind of thermometer, specifically a kind of high-precision electronic thermometer.
Background technology
Electronic thermometer is by temperature sensor, liquid crystal display, button cell, special IC and other electronic devices and components composition.Temperature can be measured rapidly and accurately, compared with traditional mercury, there is convenient reading, the measurement time is short, and the advantage can remembered and have buzzing to point out, especially electronic thermometer do not contain hydrargyrum, harmless to human body and surrounding, it is particularly suitable for family, the occasion such as hospital uses.But it is complicated that existing electronic thermometer exists structure mostly, relatively costly defect, and electronic thermometer easily produces bigger mushing error during carrying out signal amplification, therefore needs to be improved.
Utility model content
The purpose of this utility model is to provide a kind of high-precision electronic thermometer, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, the following technical scheme of this utility model offer:
nullA kind of high-precision electronic thermometer，Including resistance R3、Chip IC 1、Diode D1 and potentiometer RP2，One end of described resistance R3 connects power supply VCC，The other end of resistance R3 connects resistance R1、Resistance R4、Resistance R6、Resistance R8、Resistance R12、Resistance R13、The fixing end of of potentiometer RP1 and gauge outfit P ground connection，The other end of resistance R4 connects resistance R5、Another fixing end of resistance R7 and potentiometer RP1，The other end of resistance R5 connects resistance R2 and the other end of resistance R6，The other end of resistance R2 connects the other end and the pin 3 of chip IC 1 of resistance R1，The other end of resistance R7 connects the other end of resistance R8，The sliding end of potentiometer RP1 connects resistance R9，The other end of resistance R9 connects resistance R10 and the pin 1 of chip IC 1，The pin 4 of chip IC 1 connects the other end and the resistance R11 of resistance R10，The other end of resistance R11 connects electric capacity C1、The anode of diode D1、The negative electrode of diode D2、The fixing end of of potentiometer RP2 and the sliding end of potentiometer RP2，The negative electrode of diode D1 connects the anode of diode D2、The other end of electric capacity C1、The other end of resistance R12 and the pin 3 of chip IC 2，The pin 4 of chip IC 2 connects the other end of resistance R13、The other end of gauge outfit P and another fixing end of potentiometer RP2，The model of described chip IC 1 and chip IC 2 is LM321.
As preferred version of the present utility model: described power supply VCC is 5V unidirectional current.
Compared with prior art, the beneficial effects of the utility model are: this utility model high-precision electronic thermometer simple in construction, components and parts are few, use critesistor to combine usual electrical resistance elements and form non-equilibrium bridge for measuring temperature, and carry out the two-stage amplifieroperation with complex feedback to measuring signal, enter and increase the accuracy measured, therefore there is the advantage that low cost, precision are high and easy to use.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of high-precision electronic thermometer.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
nullRefer to Fig. 1，A kind of high-precision electronic thermometer，Including resistance R3、Chip IC 1、Diode D1 and potentiometer RP2，One end of described resistance R3 connects power supply VCC，The other end of resistance R3 connects resistance R1、Resistance R4、Resistance R6、Resistance R8、Resistance R12、Resistance R13、The fixing end of of potentiometer RP1 and gauge outfit P ground connection，The other end of resistance R4 connects resistance R5、Another fixing end of resistance R7 and potentiometer RP1，The other end of resistance R5 connects resistance R2 and the other end of resistance R6，The other end of resistance R2 connects the other end and the pin 3 of chip IC 1 of resistance R1，The other end of resistance R7 connects the other end of resistance R8，The sliding end of potentiometer RP1 connects resistance R9，The other end of resistance R9 connects resistance R10 and the pin 1 of chip IC 1，The pin 4 of chip IC 1 connects the other end and the resistance R11 of resistance R10，The other end of resistance R11 connects electric capacity C1、The anode of diode D1、The negative electrode of diode D2、The fixing end of of potentiometer RP2 and the sliding end of potentiometer RP2，The negative electrode of diode D1 connects the anode of diode D2、The other end of electric capacity C1、The other end of resistance R12 and the pin 3 of chip IC 2，The pin 4 of chip IC 2 connects the other end of resistance R13、The other end of gauge outfit P and another fixing end of potentiometer RP2，The model of described chip IC 1 and chip IC 2 is LM321.
Power supply VCC is 5V unidirectional current.
Operation principle of the present utility model is: circuit by critesistor R6 as temperature element, by resistance R6, resistance R7, resistance R8, resistance R9 and potentiometer RP1 forms nonequilibrium bridge for measuring temperature, nonequilibrium bridge for measuring temperature can according to variations in temperature thus change the dividing potential drop system of potentiometer RP1, and then change the magnitude of voltage of inverting input 1 foot of chip IC 1, after chip IC 1 and chip IC 2 carry out two-stage signal amplification, send into and gauge outfit P carries out numeral instruction intuitively, dual-stage amplifier in circuit all uses degenerative version, thus effectively reduce the error produced in amplification process, and then increase the certainty of measurement of thermometer, regulator potentiometer RP2 can also change the size of feedback quantity.
Claims (2)
- null1. a high-precision electronic thermometer，Including resistance R3、Chip IC 1、Diode D1 and potentiometer RP2，It is characterized in that，One end of described resistance R3 connects power supply VCC，The other end of resistance R3 connects resistance R1、Resistance R4、Resistance R6、Resistance R8、Resistance R12、Resistance R13、The fixing end of of potentiometer RP1 and gauge outfit P ground connection，The other end of resistance R4 connects resistance R5、Another fixing end of resistance R7 and potentiometer RP1，The other end of resistance R5 connects resistance R2 and the other end of resistance R6，The other end of resistance R2 connects the other end and the pin 3 of chip IC 1 of resistance R1，The other end of resistance R7 connects the other end of resistance R8，The sliding end of potentiometer RP1 connects resistance R9，The other end of resistance R9 connects resistance R10 and the pin 1 of chip IC 1，The pin 4 of chip IC 1 connects the other end and the resistance R11 of resistance R10，The other end of resistance R11 connects electric capacity C1、The anode of diode D1、The negative electrode of diode D2、The fixing end of of potentiometer RP2 and the sliding end of potentiometer RP2，The negative electrode of diode D1 connects the anode of diode D2、The other end of electric capacity C1、The other end of resistance R12 and the pin 3 of chip IC 2，The pin 4 of chip IC 2 connects the other end of resistance R13、The other end of gauge outfit P and another fixing end of potentiometer RP2，The model of described chip IC 1 and chip IC 2 is LM321.
- A kind of high-precision electronic thermometer the most according to claim 1, it is characterised in that described power supply VCC is 5V unidirectional current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620352313.8U CN205607560U (en) | 2016-04-21 | 2016-04-21 | High accuracy electron temperature meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620352313.8U CN205607560U (en) | 2016-04-21 | 2016-04-21 | High accuracy electron temperature meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205607560U true CN205607560U (en) | 2016-09-28 |
Family
ID=56970835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620352313.8U Expired - Fee Related CN205607560U (en) | 2016-04-21 | 2016-04-21 | High accuracy electron temperature meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205607560U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828411A (en) * | 2017-04-12 | 2017-06-13 | 杨昊燃 | A kind of vehicle intelligent information system with safety protection function |
-
2016
- 2016-04-21 CN CN201620352313.8U patent/CN205607560U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106828411A (en) * | 2017-04-12 | 2017-06-13 | 杨昊燃 | A kind of vehicle intelligent information system with safety protection function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201589670U (en) | Transmitting circuit of single-power supply thermal-resistance temperature sensor | |
| CN205607560U (en) | High accuracy electron temperature meter | |
| CN205209646U (en) | Novel temperature measuring circuit | |
| CN204695136U (en) | A kind of temperature control circuit | |
| CN204535873U (en) | A kind of low-cost and high-precision thermometer | |
| CN204330173U (en) | A kind of easy electronic temperature transmitter | |
| CN202853834U (en) | Pressure measuring device with temperature drift compensation | |
| CN105277292A (en) | Temperature measurement device | |
| CN203465349U (en) | Micro-power-consumption detection circuit based on sensitive resistor | |
| CN204188299U (en) | Multichannel IGBT inner NTC high temperature real-time detection circuit | |
| CN203396501U (en) | Pointer type electronic thermometer | |
| CN204694371U (en) | A kind of temperature test circuit | |
| CN204287456U (en) | A kind of Novel magnetic field sensor | |
| CN204228286U (en) | A kind of Moisture Meter temperature collection circuit | |
| CN204439243U (en) | A kind of USB electronic thermometer | |
| CN205107642U (en) | Human temperature real -time detection ware of wearing formula | |
| CN203132595U (en) | Automotive resistance type water temperature fuel sampling system | |
| CN103528710B (en) | Perfusion liquid temperature detector | |
| CN205403996U (en) | Thermometer | |
| CN103454003A (en) | Pointer type electronic thermometer | |
| CN205027462U (en) | Experiment instruments used for education circuit is calibrated to thermocouple | |
| CN204971238U (en) | Portable temperature sensor | |
| CN201408021Y (en) | Multi-functional on-site indicator | |
| CN204181593U (en) | A kind of low-power consumption temp measuring system based on accurate reverse current source | |
| CN204181594U (en) | A kind of constant pressure type low-power consumption temp measuring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170823 Address after: Village Development Zone Sanjiang Zengcheng Jianglong Stone Town, Guangdong city of Guangzhou Province under 510000 (i.e., Sha Zhuang Jianglong Avenue South West) Patentee after: Guangzhou Wangda Knitting Co., Ltd. hardware Address before: 315700 Ningbo, Xiangshan Province Economic Development Zone, Park Road, No. 98 Patentee before: The Xiangshan intelligent Science and Technology Ltd. far away of fighting |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20180421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |