CN204694361U - A kind of wireless liquid steel temperature measuring system - Google Patents
A kind of wireless liquid steel temperature measuring system Download PDFInfo
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- CN204694361U CN204694361U CN201520420578.2U CN201520420578U CN204694361U CN 204694361 U CN204694361 U CN 204694361U CN 201520420578 U CN201520420578 U CN 201520420578U CN 204694361 U CN204694361 U CN 204694361U
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Abstract
The utility model discloses a kind of wireless liquid steel temperature measuring system.The utility model comprises temperature collect module and temperature reception display module, described temperature collect module comprise connect successively thermocouple sensor U2, temperature conditioning and analog to digital conversion circuit U3, single-chip microcomputer U1 governor circuit and 433M wireless sending module U4, described data receiver display module comprises wireless receiving module U5, single-chip microcomputer U6 governor circuit, display and warning circuit U7, single-chip microcomputer governor circuit U6 and connects wireless receiving module U5 respectively and show and warning circuit U7.The utility model adopts wireless remote mode to realize measuring junction and is separated with display end, and how measuring junction environment badly all can not hurt the person.
Description
Technical field
The utility model relates to fluid temperature field of measuring technique, in particular, relates to a kind of wireless liquid steel temperature measuring system.
Background technology
Fluid temperature measuring technique is widely used in daily life and Industry Control, in continuous casting of iron and steel process, molten steel temperature in tundish is the key parameter determining cooling water control, how to accurately measure this temperature and starts the key that corresponding control measure are continuous castings.The Chinese patent that name is called " a kind of remote temperature measurement device based on DS18B20 temperature sensor ", publication number is CN103954374A proposes a kind of temperature acquisition system, it utilizes DS18B20 single bus collecting temperature value and teletransmission, but the temperature range can measured due to DS18B20 narrow (-55-125 degree), error large (0.5 degree), so the requirement of measuring liquid steel temperature can not be met, the thermocouple sensor response time is fast, precision is high, temperature-measuring range is wide, is applicable to commercial Application.
Utility model content
In order to overcome the defect and deficiency that exist in above-mentioned prior art, the utility model provides a kind of wireless liquid steel temperature measuring system.
A kind of wireless liquid steel temperature measuring system of the utility model, comprise temperature collect module and temperature reception display module, described temperature collect module comprise connect successively thermocouple sensor U2, temperature conditioning and analog to digital conversion circuit U3, single-chip microcomputer U1 governor circuit and 433M wireless sending module U4, described data receiver display module comprises wireless receiving module U5, single-chip microcomputer U6 governor circuit, display and warning circuit U7, single-chip microcomputer governor circuit U6 and connects wireless receiving module U5 respectively and show and warning circuit U7.
The single-chip microcomputer U1 governor circuit of described temperature collect module comprises the crystal oscillating circuit be made up of crystal oscillator Y1, electric capacity C1, electric capacity C2, the filtering circuit that electric capacity C3, the reset circuit of button S1, resistance R1 composition, electric capacity C4 form; Crystal oscillator Y1 one end meets the XTAL2 of single-chip microcomputer U1, connects electric capacity C2 to ground simultaneously; The other end meets the XTAL1 of single-chip microcomputer U1, connects electric capacity C1 to ground simultaneously; Resistance R1, electric capacity C3, button S1 form the reset circuit of single-chip microcomputer U1; Electric capacity C3 mono-termination positive source, other end contact resistance R1 is to ground, and resistance R1, electric capacity C3 one end are connected to the RST pin of single-chip microcomputer U1, and one end of button S1 connects power supply, and the other end connects the RST pin of single-chip microcomputer U1; Electric capacity C4 forms electric source filter circuit; Electric capacity C4 one end is connected to positive source, and the other end of electric capacity C4 is connected to ground; Thermocouple sensor U2 adopts waterproof shield type thermocouple temperature sensor, and drawn the T+ being connected to temperature conditioning and analog to digital conversion electricity U3 by wire, T-holds, as the input of simulating signal; Temperature conditioning and analog to digital conversion electricity U3 comprise MAX6675 chip and filter capacitor C10, and electric capacity C10 pin connects power supply, and another pin connects ground; MAX6675 chip is directly connected to the P0.0-P0.2 mouth of single-chip microcomputer U1 by three line serial ports; 433M wireless sending module U4 selects nRF905 chip, the XTAL2 of crystal oscillator Y2 mono-termination nRF905 chip U4, connects electric capacity C15 to ground simultaneously; The XTAL1 of another termination nRF905 chip U4, connect electric capacity C16 to ground, resistance R3 is connected in parallel on crystal oscillator Y2 two ends simultaneously; Electric capacity C8 one end connects nRF905 chip ANT1 pin, other end ground connection, electric capacity C11 one end connects nRF905 chip ANT2 pin, other end ground connection, and electric capacity C9 is connected nRF905 chip ANT1 and ANT2 pin with inductance L 3 two ends, inductance L 2 one end connects nRF905 chip ANT2, the other end connects electric capacity C13, and the other end of electric capacity C13 connects emitting antenna, and inductance L 1 one end connects nRF905 chip ANT1, the other end connects electric capacity C12, and the other end of electric capacity C12 connects ground.
The I/O port of the single-chip microcomputer U6 governor circuit of described data receiver display module connects digital pipe display circuit and buzzer alarm circuit; Described digital pipe display circuit comprises triode Q1, Q2, Q3, Q4 and charactron, the emitting stage of triode Q1, Q2, Q3, Q4 connects power supply, base stage is connected to the P3.2-P3.5 mouth of single-chip microcomputer U6 by resistance R7, R6, R5, R4, collector is connected to the Duan Xuanduan of charactron, and the position choosing end of charactron is connected to the P1 mouth of single-chip microcomputer U6 by resistance R8, R9, R10, R11, R12, R13, R14, R15; Described buzzer alarm circuit is made up of loudspeaker LS1, triode Q5 and resistance R16; Loudspeaker LS1 mono-termination positive source, the collector of another termination triode Q5, the grounded emitter of triode Q5, the P0.0 mouth of base stage contact resistance R16 to single-chip microcomputer U6.
Described wireless receiving module U5 structure is identical with 433M wireless sending module U4.
Collection transmitting terminal of the present utility model is by K-type thermopair collecting temperature signal, temperature modulate circuit realizes carrying out filtering, amplification, cold junction compensation to the signal collected, signal is converted to the voltage form that analog to digital converter can collect, is sent by 433M wireless module after single-chip microcomputer receives analog to digital conversion signal; Receive display end by the realization of Single-chip Controlling 433M wireless receiving module to the reception of signal and storage, and be presented at charactron in real time, when the temperature value received exceedes warning bound, start buzzer warning.
The utility model has following beneficial effect:
1, adopt wireless remote mode to realize measuring junction to be separated with display end, how measuring junction environment badly all can not hurt the person.
2, thermocouple sensor measurable range is wide, and precision is high, practical.
3, adopt integrated MAX6675 to realize signal condition and AD conversion, avoid complicacy and unreliability that discrete device brings design.
4, system all adopts 5V to power, and both can use 5V adapter, also can use powered battery, easy to use.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the single-chip microcomputer governor circuit U1 circuit diagram of the utility model temperature collect module;
Fig. 3 is the conditioning of the utility model temperature and analog to digital conversion part U3 circuit diagram;
Fig. 4 is the utility model wireless sending module U4 circuit diagram;
Fig. 5 is the utility model temperature reception display module single-chip microcomputer governor circuit U6 circuit diagram;
Fig. 6 is the circuit diagram of the utility model digital pipe display circuit;
Fig. 7 is the circuit diagram of the utility model buzzer alarm circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, temperature sensor probe is affixed on inside cylinder body, and temperature sensor probe extension lead is connected to temperature collect module circuit board end; Temperature collect module comprise connect successively thermocouple sensor U2, temperature conditioning and analog to digital conversion circuit U3, single-chip microcomputer U1 governor circuit and 433M wireless sending module U4, described data receiver display module comprises wireless receiving module U5, single-chip microcomputer U6 governor circuit, display and warning circuit U7, single-chip microcomputer governor circuit U6 and connects wireless receiving module U5 respectively and show and warning circuit U7.
As in Figure 2-4, the single-chip microcomputer U1 governor circuit of temperature collect module comprises the crystal oscillating circuit be made up of crystal oscillator Y1, electric capacity C1, electric capacity C2, the filtering circuit that electric capacity C3, the reset circuit of button S1, resistance R1 composition, electric capacity C4 form; Crystal oscillator Y1 one end meets the XTAL2 of single-chip microcomputer U1, connects electric capacity C2 to ground simultaneously; The other end meets the XTAL1 of single-chip microcomputer U1, connects electric capacity C1 to ground simultaneously; Resistance R1, electric capacity C3, button S1 form the reset circuit of single-chip microcomputer U1; Electric capacity C3 mono-termination positive source, other end contact resistance R1 is to ground, and resistance R1, electric capacity C3 one end are connected to the RST pin of single-chip microcomputer U1, and one end of button S1 connects power supply, and the other end connects the RST pin of single-chip microcomputer U1; Electric capacity C4 forms electric source filter circuit; Electric capacity C4 one end is connected to positive source, and the other end of electric capacity C4 is connected to ground; Thermocouple sensor U2 adopts waterproof shield type thermocouple temperature sensor, and drawn the T+ being connected to temperature conditioning and analog to digital conversion electricity U3 by wire, T-holds, as the input of simulating signal; Temperature conditioning and analog to digital conversion electricity U3 comprise MAX6675 chip and filter capacitor C10, and electric capacity C10 pin connects power supply, and another pin connects ground; MAX6675 chip is directly connected to the P0.0-P0.2 mouth of single-chip microcomputer U1 by three line serial ports; 433M wireless sending module U4 selects nRF905 chip, the XTAL2 of crystal oscillator Y2 mono-termination nRF905 chip U4, connects electric capacity C15 to ground simultaneously; The XTAL1 of another termination nRF905 chip U4, connect electric capacity C16 to ground, resistance R3 is connected in parallel on crystal oscillator Y2 two ends simultaneously; Electric capacity C8 one end connects nRF905 chip ANT1 pin, other end ground connection, electric capacity C11 one end connects nRF905 chip ANT2 pin, other end ground connection, and electric capacity C9 is connected nRF905 chip ANT1 and ANT2 pin with inductance L 3 two ends, inductance L 2 one end connects nRF905 chip ANT2, the other end connects electric capacity C13, and the other end of electric capacity C13 connects emitting antenna, and inductance L 1 one end connects nRF905 chip ANT1, the other end connects electric capacity C12, and the other end of electric capacity C12 connects ground; 5,9,16,18,22,24 of nRF905 chip, 26,27,28,29,30 pin ground connection, 4,17 of nRF905 chip, 25 pins meet power supply VCC, and all the other pins are directly connected to P0.3-P0.7 and the P2.0-P2.4 mouth of single-chip microcomputer U1, control its working method and data transmission by single-chip microcomputer U1.
As seen in figs. 5-6, the I/O port of the single-chip microcomputer U6 governor circuit of data receiver display module connects digital pipe display circuit and buzzer alarm circuit; Described digital pipe display circuit comprises triode Q1, Q2, Q3, Q4 and charactron, the emitting stage of triode Q1, Q2, Q3, Q4 connects power supply, base stage is connected to the P3.2-P3.5 mouth of single-chip microcomputer U6 by resistance R7, R6, R5, R4, collector is connected to the Duan Xuanduan of charactron, and the position choosing end of charactron is connected to the P1 mouth of single-chip microcomputer U6 by resistance R8, R9, R10, R11, R12, R13, R14, R15; Described buzzer alarm circuit is made up of loudspeaker LS1, triode Q5 and resistance R16; Loudspeaker LS1 mono-termination positive source, the collector of another termination triode Q5, the grounded emitter of triode Q5, the P0.0 mouth of base stage contact resistance R16 to single-chip microcomputer U6.
Use of the present utility model: first power on, then download the configuration working method of nR905 and the upper lower limit value of temperature alarming, observes the temperature value of molten steel finally by display screen.
Utility model works principle: what collecting part adopted is waterproof shield K-type thermocouple temperature sensor, this sensor is temperature-measuring range wide (the highest measure 1000 degree) not only, and precision high (resolution can reach 0.25 degree).That temperature modulate circuit is selected is the MAX6675 being integrated with thermocouple amplifier, cold junction compensation, A/D converter and SPI serial ports.Avoid discrete component and build the unreliability that circuit brings, simplify the design of hardware and software of system.Single-chip microcomputer is sent by 433M wireless module after receiving the digital signal of MAX6675 output; Receive display end: the realization of Single-chip Controlling 433M wireless receiving module to the reception of signal and storage, and is presented at charactron in real time, when the temperature value received exceedes warning bound, start buzzer warning.
Claims (4)
1. a wireless liquid steel temperature measuring system, it is characterized in that, comprise temperature collect module and temperature reception display module, described temperature collect module comprise connect successively thermocouple sensor U2, temperature conditioning and analog to digital conversion circuit U3, single-chip microcomputer U1 governor circuit and 433M wireless sending module U4, described data receiver display module comprises wireless receiving module U5, single-chip microcomputer U6 governor circuit, display and warning circuit U7, single-chip microcomputer governor circuit U6 and connects wireless receiving module U5 respectively and show and warning circuit U7.
2. wireless liquid steel temperature measuring system according to claim 1, it is characterized in that, the single-chip microcomputer U1 governor circuit of described temperature collect module comprises the crystal oscillating circuit be made up of crystal oscillator Y1, electric capacity C1, electric capacity C2, the filtering circuit that electric capacity C3, the reset circuit of button S1, resistance R1 composition, electric capacity C4 form; Crystal oscillator Y1 one end meets the XTAL2 of single-chip microcomputer U1, connects electric capacity C2 to ground simultaneously; The other end meets the XTAL1 of single-chip microcomputer U1, connects electric capacity C1 to ground simultaneously; Resistance R1, electric capacity C3, button S1 form the reset circuit of single-chip microcomputer U1; Electric capacity C3 mono-termination positive source, other end contact resistance R1 is to ground, and resistance R1, electric capacity C3 one end are connected to the RST pin of single-chip microcomputer U1, and one end of button S1 connects power supply, and the other end connects the RST pin of single-chip microcomputer U1; Electric capacity C4 forms electric source filter circuit; Electric capacity C4 one end is connected to positive source, and the other end of electric capacity C4 is connected to ground; Thermocouple sensor U2 adopts waterproof shield type thermocouple temperature sensor, and drawn the T+ being connected to temperature conditioning and analog to digital conversion electricity U3 by wire, T-holds, as the input of simulating signal; Temperature conditioning and analog to digital conversion electricity U3 comprise MAX6675 chip and filter capacitor C10, and electric capacity C10 pin connects power supply, and another pin connects ground; MAX6675 chip is directly connected to the P0.0-P0.2 mouth of single-chip microcomputer U1 by three line serial ports; 433M wireless sending module U4 selects nRF905 chip, the XTAL2 of crystal oscillator Y2 mono-termination nRF905 chip U4, connects electric capacity C15 to ground simultaneously; The XTAL1 of another termination nRF905 chip U4, connect electric capacity C16 to ground, resistance R3 is connected in parallel on crystal oscillator Y2 two ends simultaneously; Electric capacity C8 one end connects nRF905 chip ANT1 pin, other end ground connection, electric capacity C11 one end connects nRF905 chip ANT2 pin, other end ground connection, and electric capacity C9 is connected nRF905 chip ANT1 and ANT2 pin with inductance L 3 two ends, inductance L 2 one end connects nRF905 chip ANT2, the other end connects electric capacity C13, and the other end of electric capacity C13 connects emitting antenna, and inductance L 1 one end connects nRF905 chip ANT1, the other end connects electric capacity C12, and the other end of electric capacity C12 connects ground.
3. wireless liquid steel temperature measuring system according to claim 1, is characterized in that, the I/O port of the single-chip microcomputer U6 governor circuit of described data receiver display module connects digital pipe display circuit and buzzer alarm circuit; Described digital pipe display circuit comprises triode Q1, Q2, Q3, Q4 and charactron, the emitting stage of triode Q1, Q2, Q3, Q4 connects power supply, base stage is connected to the P3.2-P3.5 mouth of single-chip microcomputer U6 by resistance R7, R6, R5, R4, collector is connected to the Duan Xuanduan of charactron, and the position choosing end of charactron is connected to the P1 mouth of single-chip microcomputer U6 by resistance R8, R9, R10, R11, R12, R13, R14, R15; Described buzzer alarm circuit is made up of loudspeaker LS1, triode Q5 and resistance R16; Loudspeaker LS1 mono-termination positive source, the collector of another termination triode Q5, the grounded emitter of triode Q5, the P0.0 mouth of base stage contact resistance R16 to single-chip microcomputer U6.
4. wireless liquid steel temperature measuring system according to claim 1, is characterized in that, described wireless receiving module U5 structure is identical with 433M wireless sending module U4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420578.2U CN204694361U (en) | 2015-06-18 | 2015-06-18 | A kind of wireless liquid steel temperature measuring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520420578.2U CN204694361U (en) | 2015-06-18 | 2015-06-18 | A kind of wireless liquid steel temperature measuring system |
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| CN204694361U true CN204694361U (en) | 2015-10-07 |
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| CN201520420578.2U Expired - Fee Related CN204694361U (en) | 2015-06-18 | 2015-06-18 | A kind of wireless liquid steel temperature measuring system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352996A (en) * | 2016-10-10 | 2017-01-25 | 无锡伟博汽车科技有限公司 | Multi-path thermocouple temperature and analog signal collection instrument |
| CN108230650A (en) * | 2018-01-15 | 2018-06-29 | 昆明理工大学 | A kind of self power generation water quality water level real-time monitoring device based on LoRa |
| CN109489184A (en) * | 2018-11-15 | 2019-03-19 | 南京铁道职业技术学院 | A kind of railway station intelligence environmental control system |
-
2015
- 2015-06-18 CN CN201520420578.2U patent/CN204694361U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106352996A (en) * | 2016-10-10 | 2017-01-25 | 无锡伟博汽车科技有限公司 | Multi-path thermocouple temperature and analog signal collection instrument |
| CN108230650A (en) * | 2018-01-15 | 2018-06-29 | 昆明理工大学 | A kind of self power generation water quality water level real-time monitoring device based on LoRa |
| CN109489184A (en) * | 2018-11-15 | 2019-03-19 | 南京铁道职业技术学院 | A kind of railway station intelligence environmental control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160618 |