CN2388594Y - Temp./heat flow measuring instrument - Google Patents
Temp./heat flow measuring instrument Download PDFInfo
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- CN2388594Y CN2388594Y CN 99248665 CN99248665U CN2388594Y CN 2388594 Y CN2388594 Y CN 2388594Y CN 99248665 CN99248665 CN 99248665 CN 99248665 U CN99248665 U CN 99248665U CN 2388594 Y CN2388594 Y CN 2388594Y
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000012530 fluid Substances 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 17
- 238000012545 processing Methods 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000003190 augmentative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a temperature / heat flow measuring instrument which is suitable for measuring the temperature and the heat flow of target environment, meteorological phenomena, architecture, greenhouses, etc. The structure of the utility model is characterized in that a control system adopts a monolithic computer microprocessor to cause a liquid crystal display to directly display measured data, and the direction of the heat flow can be measured; the intermittent power supply of a changeover circuit, an amplifying circuit, a microprocessor, etc. and the power supply management can be realized by a power supply loop through three power supply management modules. Compared with the prior art, the utility model has the advantages of small size, light weight, convenient use, high precision and good stability, and a new family in the technical field of measuring instruments is supplied.
Description
The utility model belongs to temperature, heat flow measurement instrument, especially battery-powered intelligent hand-held temperature survey and heat flow measurement instrument.
Temperature measuring set is the miniature temperature measuring device of a kind of battery-powered intellectuality, is applicable to the various occasions that need to measure temperature changing process such as measurement target environment, meteorology, building, greenhouse.Along with economic construction need with high-tech development, not only need to measure temperature but also needs in above-mentioned occasion and measure the situation of hot-fluid and will get more and more.And still do not have the specialized equipment of measuring hot-fluid in the prior art.At present, can only adopt the instrument of other energy measurement flow velocity class to replace when need measuring hot-fluid, and adopt method that AD value is shone upon to table look-up and then drive LCD, provide measurement result.Like this, bring great trouble and inconvenience for on-the-spot user.Have that volume is big, heaviness, maintenance difficult, measuring accuracy is poor, power consumption is high shortcoming.
At the shortcoming that exists in the above-mentioned prior art, what goal of the invention of the present utility model provided that a kind of volume is little, in light weight, measuring accuracy is high, easy to use is the intelligent hand-held temperature/heat flow measurement instrument of core with the microprocessor, it not only organically combines the measurement of temperature and hot-fluid, and can reduce power consumption greatly.
In order to reach above-mentioned goal of the invention, the technical solution of the utility model realizes in the following way: temperature/heat flow measurement instrument, it comprises temperature gauge head, hot-fluid gauge head, change-over circuit, two amplifying circuits, constant pressure source, switch, A/D converter, ABC three power management modules, storer, electric voltage observation circuit, clock, microprocessor, power switch, battery and LCDs.Contain CPU and I/O in the described microprocessor.Its design feature is also to be provided with clock control circuit and liquid crystal control/driver in the described microprocessor.The set clock oscillation of clock control circuit may command.The set LCDs of liquid crystal control/driver may command shows.After described temperature gauge head is experienced temperature, convert voltage to through change-over circuit, amplify through a pair of voltage of the amplifying circuit amplitude of carrying out again, connect and be sent to through switch then and carry out the AD conversion in the A/D converter, the result of conversion is sent in the microprocessor by I/O, microprocessor carries out data processing according to the nominal data in the storer, then by liquid crystal control/driver the result is presented on the LCDs.After described hot-fluid gauge head converts hot-fluid to voltage, amplify through two pairs of voltages of amplifying circuit amplitude of carrying out, connect and be sent to through switch then and carry out the AD conversion in the A/D converter, the result of conversion is sent in the microprocessor, microprocessor carries out data processing according to the nominal data in the storer, then by liquid crystal control/driver the result is presented on the LCDs.Wherein change-over circuit, amplifying circuit one and constant pressure source are powered by the power management module C that is subjected to microprocessor control.Amplifying circuit two is powered by the power management module B that is subjected to microprocessor control.Storer and A/D converter are powered by the power management module A that is subjected to microprocessor control.Power management module C, power management module B, power management module A, electric voltage observation circuit are controlled battery-powered through power switch.Electric voltage observation circuit inserts the I/O of microprocessor.
According to above-mentioned technical scheme, described switch is a dpdt double-pole double-throw (DPDT), is provided with the mechanical switch switch of four corresponding two points, also import a kind of of two states signal to microprocessor except switching two path signal.
Because the utility model has adopted pile formula heat flux sensor, high-precision thermistor temperature sensor, singlechip microprocessor, formed the specialized equipment that to measure temperature and hot-fluid, remedy the deficiencies in the prior art, augmented a new family of present technique field surveying instrument.Can be widely used in the temperature of different occasions such as targeted environment, meteorology, building, greenhouse and the measurement of hot-fluid.Again because the present invention adopts the control technology based on microprocessor, can make the different mode of operation of full machine employing in service, make total system least in power-consuming, compare with prior art, it is little to have volume, in light weight, production is simple, easy to maintenance, easy to use, measuring accuracy is high, the advantage of good stability.
Below in conjunction with accompanying drawing and concrete embodiment the utility model is described further.
Fig. 1 is a fundamental diagram of the present utility model;
Fig. 2 is a concrete enforcement circuit connection diagram of the present utility model.
Referring to Fig. 1, temperature/heat flow measurement instrument comprises temperature gauge head 1, hot-fluid gauge head 17, change-over circuit 2, amplifying circuit 3 and 18, constant pressure source 4, switch 16, A/D converter 15, power management module C5, power management module B6, power management module A7, storer 8, electric voltage observation circuit 9, clock 10, microprocessor 11, power switch 12, battery 13 and LCDs 14.In microprocessor 11, contain CPU and I/O and clock control circuit and liquid crystal control/driver.Set clock 10 vibrations of clock control circuit may command.The set LCDs 14 of liquid crystal control/driver may command shows.The utility model principle of work is as follows: when measuring temperature, after described temperature gauge head 1 is experienced temperature, convert voltage to through change-over circuit 2, amplify through 3 pairs of voltages of amplifying circuit amplitude of carrying out again, be sent to through switch 16 conversion connections and with voltage then and carry out the AD conversion in the A/D converter 15, the result of conversion is sent in the microprocessor 11 through I/O, microprocessor 11 carries out data processing according to the nominal data in the storer 8, then by liquid crystal control/driver the result is presented on the LCDs 14.When measuring temperature, after described hot-fluid gauge head 17 converts hot-fluid to voltage, amplify through 19 pairs of voltages of amplifying circuit amplitude of carrying out, be sent to through switch 16 conversion connections and with voltage then and carry out the AD conversion in the A/D converter 15, transformation results is delivered in the microprocessor 11 through I/O, microprocessor 11 carries out data processing according to the nominal data in the storer 8, then by liquid crystal control/driver the result is presented on the LCDs, and can demonstrates the direction of institute's calorimetric stream.Wherein change-over circuit 2, amplifying circuit 3 and constant pressure source 4 are powered by the power management module C5 that is subjected to microprocessor 11 controls.Amplifying circuit 18 is powered by the power management module B6 that is subjected to microprocessor 11 controls, and storer 8 and A/D converter 15 are powered by the power management module A7 that is subjected to microprocessor 11 controls.Power management module C5, power management module B6, power management module A7, electric voltage observation circuit 9 are powered by battery 13 through power switch 12 controls.Electric voltage observation circuit 9 inserts the I/O of microprocessor 11.Above-mentioned switch 15 is dpdt double-pole double-throw (DPDT), is provided with the mechanical switch switch of four corresponding two points, also import a kind of of two states signals to microprocessor 11 except switching two path signal.Contain the negative supply converter among described power management module C5, power management module B6 and the power management module A7.Above-mentioned power management module has been arranged, just can realize the timesharing intermittent power supply, carried out power management and save electric energy different circuit part.
Referring to Fig. 2, Fig. 2 is that the utility model is specifically implemented circuit connection diagram.In employed microprocessor MCU, contain CPU, I/O and clock control circuit and liquid crystal control/driver.Clock control circuit control clock oscillator XO vibration.Liquid crystal control/driver control LCDs LCD video data.When measuring temperature, the temperature gauge head is temperature-sensitive resistance R T, the constant pressure source of being made up of resistance R 9 and voltage stabilizing diode Z2 provides constant voltage, it experiences temperature after the change-over circuit of being made up of resistance R 10～R12 converts voltage to, via amplifier A2, resistance R 13～R16, the amplifying circuit that capacitor C 3 and C4 form amplifies the voltage amplitude of carrying out, then switch S1 is connected, through resistance R 8 voltage is sent to and carries out the AD conversion among the converter A/D, the result of conversion is sent among the microprocessor MCU through I/O, also status signal is sent in the microprocessor through I/O simultaneously.Microprocessor MCU carries out data processing according to the nominal data among the storer EEPROM, then by liquid crystal control/driver set in it result is presented on the LCDs LCD.Switch S1 wherein is provided with four corresponding two points, except that switching two path signal, and also can be to the used at that time status signal of microprocessor MCU input.When measuring hot-fluid, the hot-fluid gauge head is pile formula hot-fluid gauge head HES, after changing the circulation of institute calorimetric into voltage, the amplifying circuit of forming via resistance R 3～R5, amplifier A1 amplifies voltage amplitude, then switch S1 conversion is connected, through resistance R 8 voltage signal is sent to and carries out the AD conversion among the converter A/D, simultaneously status signal is sent in the microprocessor through I/O.The later course of work is identical with the course of work of above-mentioned measurement temperature, repeats no more.In the loop, above-mentioned change-over circuit, the amplifying circuit of being made up of amplifier A2 etc., the set constant pressure source of being made up of resistance R 9 and zener diode Z2 are powered by the power management module of being made up of triode T4, negative supply converter U3, electrochemical capacitor E5 and E6 that is subjected to microprocessor MCU control.The amplifying circuit of forming by amplifier A1 etc. and power by the power management module of forming by triode T2, resistance R 2 and R6, triode T3, negative supply converter U2, electrochemical capacitor E3 and E4 that is subjected to microprocessor MCU control.Storer EEPROM, converter A/D are powered by the power management module of being made up of resistance R 23, resistance R 1, triode T6, triode T1, negative supply converter U1, electrochemical capacitor E1 and E2 that is subjected to microprocessor MCU control.Three above-mentioned power management modules reach the electric voltage observation circuit of being made up of variable resistor VR1, resistance R 17～R19, triode T5 and power from battery BATT through power switch S2 control.Electric voltage observation circuit is inserted among the microprocessor MCU by the collector of triode T5.In addition, above-mentioned storer EEPROM can use the nonvolatile memory that model is classes such as FLASH instead.
In the use of the present utility model, what it used when measuring is the single clock system.Have two kinds of mode of operations, i.e. STOP mode of operation and SLEEP mode of operation.System enters the STOP mode of operation after the time of operating provisions.Clock failure of oscillations total system is least in power-consuming at this moment, realizes shutdown automatically thus.If think to measure again, press primary power source switch S 2 again and get final product.Another kind of SLEEP pattern is meant, out of service and other resource of microprocessor MCU this moment is all in operation, thereby can save a part of electric energy, if external interrupt is arranged then withdraw from this mode of operation.Certainly in actual use,, power switch S2 should be closed, have only when use just to open if when not carrying out temperature or heat flow measurement.
Claims (4)
1. temperature/heat flow measurement instrument, it comprises temperature gauge head (1), hot-fluid gauge head (17), change-over circuit (2), amplifying circuit (3,18), constant pressure source (4), switch (16), A/D converter (15), power management module C (5), power management module B (6), power management module A (7), storer (8), electric voltage observation circuit (9), clock (10), microprocessor (11), power switch (12), battery (13) and LCDs (14), contain CPU and I/O in the described microprocessor (11), it is characterized in that: also be provided with clock control circuit and liquid crystal control/driver in the described microprocessor (11), the set clock of clock control circuit may command (10) vibration, the set LCDs of liquid crystal control/driver may command (14) shows; After described temperature gauge head (1) is experienced temperature, through change-over circuit (2) changing voltage, through amplifying circuit (3) the voltage amplitude of carrying out is amplified again, be sent in the A/D converter (15) through switch (16) connection and with voltage then and carry out the AD conversion, the result of conversion is sent in the microprocessor (11), microprocessor (11) carries out data processing according to the nominal data in the storer (8), then by liquid crystal control/driver the result is presented on the LCDs (14); After described hot-fluid gauge head (17) converts hot-fluid to voltage, through amplifying circuit (18) the voltage amplitude of carrying out is amplified, be sent in the A/D converter (15) through switch (16) conversion connection and with voltage then and carry out the AD conversion, the result of conversion is sent in the microprocessor (11), microprocessor (11) carries out data processing according to the nominal data in the storer (8), then by liquid crystal control/driver the result is presented on the LCDs (14); Change-over circuit (2) wherein, amplifying circuit (3) and constant pressure source (4) are by being subjected to microprocessor (11) to be controlled at power management module C (5) power supply, amplifying circuit (18) is by power management module B (6) power supply that is subjected to microprocessor (11) control, storer (8) and A/D converter (15) are by power management module A (7) power supply that is subjected to microprocessor (11) control, power management module C (5), power management module B (6), power management module A (7), by battery (13) power supply, electric voltage observation circuit (9) inserts the I/O of microprocessor (11) to electric voltage observation circuit (9) through power switch (12) control.
2. according to the described temperature of claim 1/heat flow measurement instrument, it is characterized in that: described switch (15) is a mechanical switch switch dpdt double-pole double-throw (DPDT), that be provided with four corresponding two points, also imports a kind of of two states signal to microprocessor (11) except switching two path signal.
3. according to claim 1 or 2 described temperature/heat flow measurement instrument, it is characterized in that: described storer (8) is a nonvolatile memory, and model is EEPROM or FLASH.
4. according to the described temperature of claim 3/heat flow measurement instrument, it is characterized in that: described power management module C (5), contain the negative supply converter among power management module B (6) and the power management module A (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99248665 CN2388594Y (en) | 1999-09-28 | 1999-09-28 | Temp./heat flow measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99248665 CN2388594Y (en) | 1999-09-28 | 1999-09-28 | Temp./heat flow measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2388594Y true CN2388594Y (en) | 2000-07-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99248665 Expired - Lifetime CN2388594Y (en) | 1999-09-28 | 1999-09-28 | Temp./heat flow measuring instrument |
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| Country | Link |
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| CN (1) | CN2388594Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759850A (en) * | 2014-01-18 | 2014-04-30 | 淄博飞雁先行测控技术有限公司 | Micro-power consumption intelligent digital thermometer and temperature measurement method |
-
1999
- 1999-09-28 CN CN 99248665 patent/CN2388594Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759850A (en) * | 2014-01-18 | 2014-04-30 | 淄博飞雁先行测控技术有限公司 | Micro-power consumption intelligent digital thermometer and temperature measurement method |
| CN103759850B (en) * | 2014-01-18 | 2016-07-06 | 淄博飞雁先行测控技术有限公司 | A kind of Micro Energy Lose digital thermometer and thermometry |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: 2907, TOWER A, QINGHUATONGFANGKEJI PLAZA, BEIJING Free format text: FORMER NAME OR ADDRESS: ROOM 212, MAILBOX 2670, BEIJING CITY, 100084 |
|
| CP03 | Change of name, title or address |
Patentee address after: 100083 Beijing Tsinghua Tongfang science and Technology Square A block 2907 Patentee address before: 212 room 2670, box 100084, Beijing City |
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| C56 | Change in the name or address of the patentee |
Owner name: TONGFANG CO., LTD. Free format text: FORMER NAME OR ADDRESS: TSINGHUA TONGFANG CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: North 100083 Beijing Tsinghua Tongfang science and Technology Square A block 2907 Li Guoliang turn Patentee after: Tongfang Co.,Ltd. Address before: 100083, Beijing Tsinghua Tongfang science and Technology Square A block 2907 Li Guoliang turn Patentee before: Tsinghua Tongfang Co.,Ltd. |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |