CN2716880Y - A temperature detection and control device with self-setting of temperature range - Google Patents
A temperature detection and control device with self-setting of temperature range Download PDFInfo
- Publication number
- CN2716880Y CN2716880Y CN200420032698.7U CN200420032698U CN2716880Y CN 2716880 Y CN2716880 Y CN 2716880Y CN 200420032698 U CN200420032698 U CN 200420032698U CN 2716880 Y CN2716880 Y CN 2716880Y
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- circuit
- electrically connected
- temperature
- chip microcomputer
- serial communication
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- 238000001514 detection method Methods 0.000 title claims abstract description 12
- 238000004891 communication Methods 0.000 claims abstract description 26
- 239000000919 ceramic Substances 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 238000013461 design Methods 0.000 claims description 5
- 238000013519 translation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 5
- PXXLQQDIFVPNMP-UHFFFAOYSA-N 3-(diethylcarbamoyl)benzoic acid Chemical compound CCN(CC)C(=O)C1=CC=CC(C(O)=O)=C1 PXXLQQDIFVPNMP-UHFFFAOYSA-N 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The utility model relates to a temperature detection and control device with the function of automatically setting temperature ranges, which is electrically connected with a peripheral heat meter (1), a nixietube (2), a serial communication interface (3), an output relay (4), a piezoelectric ceramics slice (5), a system switch (6) and a direct current supply interface (7) through a main plate for detection and control which comprises a monolithic computer, a temperature detection unit circuit, a serial communication unit circuit, a sound output circuit, a relay output circuit and a digital display output circuit. In the process of working, the temperature of detection points is calculated by a program, the central temperature value and the range of upper and lower limits are automatically set according to the temperature of detection points, and after the temperature of detection points exceeds the range, the device sounds to hint and outputs control signals.
Description
Affiliated technical field
The utility model relates to a kind of temp detecting controller, especially can set up the device of temperature detection scope according to working environment on their own.
Background technology
Occasion measured and controls by multiple need such as drying (or baking), greenhouse control and infant's Quilt-kick-off alarm at some agricultural product to temperature, need at first to determine that the temperature value of check point initial steady state is the central temperature value, in case when this central temperature value of temperature departure of check point reaches the scope of certain setting later on, in time be controlled or be provided prompting and be reported to the police.The maximum characteristics of this class attemperating unit are that the central temperature value is unfixing, but decide according to the temperature at check point scene.In prior art, usually adopt manual method to set central temperature value and the upper limit thereof, lower limit temperature with rotational potentiometer or by hitting switch, assignment procedure is loaded down with trivial details, it is fixing to set its value of back, does not have intellectuality, and regulator potentiometer or configuration switch are the part of device in addition, cause the device circuit complexity, very flexible, volume increases, and price increases.
Summary of the invention
One, the technical matters that will solve
The purpose of this utility model is to provide a kind of temp detecting controller that has from the design temperature scope, to simplify circuit, reduced volume, to reduce cost, reduce power consumption, need not artificial setting, improves the intellectuality of device.
Two, technical scheme
The system core partly is the single-chip microcomputer (8) that has the A/D translation function, also have in addition temperature detecting unit circuit, serial communication unit circuit, output unit circuit and power supply etc. the circuit of totally five parts form jointly.Wherein: temperature detecting unit circuit (11) is made up of temperature sensor (1) and a small amount of other element; Serial communication unit circuit (13) is made up of level shifting circuit and serial communication interface (3); And the output unit circuit is made of jointly the circuit of three different output signals, they are relay output circuit (14), sound out-put circuit (15) and digital display output circuit (12), this wherein the executive component of relay output circuit be that the executive component of output relay (4), sound out-put circuit is piezoelectric ceramic piece (5), and the executive component in the digital display output circuit is a dynamic scan positive LED charactron (2) altogether.
Whole device is except can not being installed in 7 elements on the main printed circuit board, being installed in one in remaining whole sets of elements detects on the control main board (10), these 7 elements are: temperature sensor (1), charactron (2), serial communication interface (3), output relay (4), piezoelectric ceramic piece (5), system switching (6), direct supply interface (7), and shown in Fig. 1 block diagram.
The connection of each element circuit is the center with the single-chip microcomputer, and 12 I/O mouths by single-chip microcomputer are connected with each element circuit, are respectively:
A. be connected with temperature detecting unit circuit (11) by an I/O mouth that is set to the A/D input;
B. be connected with sound out-put circuit (15) by an I/O mouth that is set to export;
C. be connected with relay output circuit (14) by an I/O mouth that is set to export;
D. be connected with serial communication unit circuit (13) by two I/O mouths that are set to serial communication port;
E. be connected with decoding display driver circuit (9) by 6 I/O mouths that are set to export;
F. be connected with system switching (6) by an I/O mouth that is set to wake up input.
Its course of work is as follows: serial communication interface (3) is connected with RS232 serial ports on the PC by serial communication cable, can enter normal use simultaneously after design temperature variation range on the PC and bound temperature.After each start, single-chip microcomputer (8) passes through temperature detecting unit circuit (11) timing acquisition testing point temperature repeatedly, and averaged is as collecting temperature, along with the check point temperature reaches stable, when twice collecting temperature in front and back identical or surpassed the maximum time of start detected temperatures after, as the central temperature value, simultaneity factor enters normal operating conditions (this process is shown in Fig. 3 process flow diagram) last temperature acquisition value.Send alarm sound as the out-of-limit then sound out-put circuit of occurrence temperature (15) in the course of the work, output control circuit (14) action simultaneously, the duty by the control heater element is returned in the range of set temperature temperature automatically.In the entire work process, regardless of duty, digital display output circuit all shows current detected temperatures and duty in real time.
Three, beneficial effect
The central temperature value of automatic setting check point produces auditory tone cues and output control signal when the check point temperature is out-of-limit, circuit is simple, low in energy consumption, and can overcome needs the artificial inconvenience that brings of setting comprehensively in the prior art.
Description of drawings
Fig. 1 is detection control main board of the present utility model and peripheral cell, interface block diagram.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 sets central temperature value program flow diagram certainly for the utility model.
Being numbered of each element and element circuit among the figure: (1) temperature sensor, (2) charactron, (3) serial communication interface, (4) output relay, (5) piezoelectric ceramic piece, (6) system switching, (7) direct supply interface, (8) single-chip microcomputer, (9) decoding display driver circuit, (10) detect control main board, (11) temperature detecting unit circuit, (12) digital display output circuit, (13) serial communication unit circuit, (14) relay output circuit, (15) sound out-put circuit.
Embodiment
1. temperature detecting unit circuit (11) is series between power supply and the ground by temperature sensor (1) and divider resistance R1 and constitutes, and temperature sensor (1) can with the thermistor of linear or non-linear, positive temperature coefficient (PTC) or negative temperature coefficient.Single-chip microcomputer (8) HT46R47 is connected with the series connection intermediate point of thermistor RT1 and divider resistance R1 by the I/O mouth PB0 that is set to the A/D input;
2. an end ground connection after ceramic condenser C3, piezoelectric ceramic piece Cr1 connect in the sound out-put circuit (15); The I/O mouth PA3 that is set to export among the other end and single-chip microcomputer (8) HT46R47 is connected;
3. relay output circuit (14) is made up of driving resistor, NPN type triode, output relay (4) and output interface.Single-chip microcomputer (8) HT46R47 is electrically connected with driving resistor R2 and 9013 triode Q1 base stages by the I/O mouth PB1 that is set to export, 3V output relay RL1 is connected between 9013 triode Q1 collectors and the power supply, and output interface CN2 is electrically connected with the switch contact of 3V output relay RL1;
4. single-chip microcomputer (8) HT46R47 is electrically connected with 12 pin, 11 pin of level shifting circuit MAX232E in the serial communication unit circuit (13) respectively by two I/O mouth PA2, PA1 that are set to serial communication port RXD, TXD, the 1 pin RXD of serial communication interface (3) CON3,2 pin TXD are electrically connected with 13 pin, 14 pin of level shifting circuit MAX232E respectively, the 3 pin ground connection of serial communication interface (3) CON3, serial communication interface (3) is electrically connected with PC RS232 serial ports by serial communication cable;
5. triode Q2 in the digital display output circuit (12), the base stage of Q3 respectively with 2 output pin PB2 of single-chip microcomputer (8) HT46R47, PB3 is electrically connected, collector is electrically connected with low level and high-order 2 positions choosing end of charactron (2) respectively, 44 output pin PA7 that decipher input end DCBA and single-chip microcomputer (8) HT46R47 of decoding display driver circuit (9) 74HC47, PA6, PA5, PA4 is electrically connected, the abcdefg7 section output pin of decoding display driver circuit (9) 74HC47 is respectively by 7 1k Ω current-limiting resistance R7-R10, R12, R14, R16 is electrically connected with abcdefg7 section choosing end of charactron (2), and charactron (2) adopts 2 dynamic scans positive LED charactron altogether;
6.S1 system switching (6) and 10k Ω pull-up resistor R13 are connected serially to power supply, the pin PA0 that is set to wake up the I/O mouth of input with single-chip microcomputer (8) is electrically connected.Direct supply interface (7) is by 3.0 volts of lithium battery power supplies of direct current.
Claims (2)
1. temp detecting controller that has from the design temperature scope, by the single-chip microcomputer that has the A/D translation function and peripheral temperature detecting unit circuit, serial communication unit circuit, output unit circuit and power supply etc. the circuit of totally five parts form jointly, it is characterized in that:
(a) single-chip microcomputer (8) that detects on the control main board (10) is electrically connected with temperature detecting unit circuit (11) by a pin that is set to the I/O mouth of A/D input;
(b) single-chip microcomputer (8) on the detection control main board (10) is electrically connected with sound out-put circuit (15) by the pin of an I/O mouth that is set to export;
(c) single-chip microcomputer (8) on the detection control main board (10) is electrically connected with relay output circuit (14) by the pin of an I/O mouth that is set to export;
(d) single-chip microcomputer (8) that detects on the control main board (10) is electrically connected with serial communication unit circuit (13) by two pins that are set to the I/O mouth of serial communication port;
(e) single-chip microcomputer (8) on the detection control main board (10) is electrically connected with decoding display driver circuit (9) by the pin of 6 I/O mouths that are set to export.
2. a kind of temp detecting controller that has from the design temperature scope according to claim 1 is characterized in that:
(a) temperature sensor (1) and divider resistance are series between power supply and the ground in the temperature detecting unit circuit (11), single-chip microcomputer (8) input I/O mouth is connected with the series connection intermediate point of temperature sensor (1) and divider resistance, and temperature sensor (1) usefulness is linear or non-linear, the thermistor of positive temperature coefficient (PTC) or negative temperature coefficient all can;
(b) an end ground connection after ceramic condenser is connected with piezoelectric ceramic piece (5) in the sound out-put circuit (15), the other end is connected with single-chip microcomputer (8);
(c) in the relay output circuit (14), the I/O mouth pin of single-chip microcomputer (8) output is electrically connected with driving resistor and transistor base, output relay (4) is connected between transistor collector and the power supply, and output interface is electrically connected with the switch contact of output relay (4);
(d) 1,2 pin of serial communication interface (3) are electrically connected with 13 pin, 14 pin of level shifting circuit respectively in the serial communication unit circuit (13), serial communication connects the 3 pin ground connection of (3) CON3, and serial communication interface (3) is electrically connected with PC RS232 serial ports by serial communication cable;
(e) base stage of 2 triodes is electrically connected with 2 output pins of single-chip microcomputer (8) respectively in the digital display output circuit (12), collector is electrically connected with 2 position choosing ends of charactron (2) respectively, 4 decoding input ends of decoding display driver circuit (9) are electrically connected with other 4 output pins of single-chip microcomputer (8), and 7 sections output pins of decoding display driver circuit (9) are electrically connected with 7 section choosing ends of charactron (2) by 7 current-limiting resistances respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420032698.7U CN2716880Y (en) | 2004-01-19 | 2004-01-19 | A temperature detection and control device with self-setting of temperature range |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420032698.7U CN2716880Y (en) | 2004-01-19 | 2004-01-19 | A temperature detection and control device with self-setting of temperature range |
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| Publication Number | Publication Date |
|---|---|
| CN2716880Y true CN2716880Y (en) | 2005-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN200420032698.7U Expired - Fee Related CN2716880Y (en) | 2004-01-19 | 2004-01-19 | A temperature detection and control device with self-setting of temperature range |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101776212A (en) * | 2010-03-23 | 2010-07-14 | 昆明理工大学 | Pipeline temperature detection and abnormal temperature data reject method and system |
| CN101986235A (en) * | 2010-12-03 | 2011-03-16 | 福州高意通讯有限公司 | Novel temperature control structure |
| CN101233549B (en) * | 2005-07-29 | 2012-06-13 | 仙克斯股份有限公司 | Sensor and method for acquiring setting information thereof |
| CN103542951A (en) * | 2012-07-17 | 2014-01-29 | 长春工业大学 | Mining temperature sensor |
-
2004
- 2004-01-19 CN CN200420032698.7U patent/CN2716880Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101233549B (en) * | 2005-07-29 | 2012-06-13 | 仙克斯股份有限公司 | Sensor and method for acquiring setting information thereof |
| CN101776212A (en) * | 2010-03-23 | 2010-07-14 | 昆明理工大学 | Pipeline temperature detection and abnormal temperature data reject method and system |
| CN101986235A (en) * | 2010-12-03 | 2011-03-16 | 福州高意通讯有限公司 | Novel temperature control structure |
| CN101986235B (en) * | 2010-12-03 | 2012-05-30 | 福州高意通讯有限公司 | Novel temperature control structure |
| CN103542951A (en) * | 2012-07-17 | 2014-01-29 | 长春工业大学 | Mining temperature sensor |
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| Date | Code | Title | Description |
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| 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 |