CN103487161A - Cold chain logistics temperature display recording instrument - Google Patents
Cold chain logistics temperature display recording instrument Download PDFInfo
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- CN103487161A CN103487161A CN201210195567.XA CN201210195567A CN103487161A CN 103487161 A CN103487161 A CN 103487161A CN 201210195567 A CN201210195567 A CN 201210195567A CN 103487161 A CN103487161 A CN 103487161A
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Abstract
The invention relates to a cold chain logistics temperature display recording instrument which comprises a temperature sensor, an information processing module, a display screen, a miniprinter, a keyboard and a moisture-proof outer shell, wherein the information processing module is connected with the temperature sensor and used for receiving analog signals from the temperature sensor and processing the analog signals to obtain temperature information, the display screen is connected with the information processing module and used for displaying the temperature information, the miniprinter is connected with the information processing module and used for printing the temperature information, the keyboard is connected with the information processing module and used for outputting an operating command, and the moisture-proof outer shell is used for allowing the temperature sensor, the information processing module, the display screen, the keyboard and the miniprinter to be installed. Compared with the prior art, the cold chain logistics temperature display recording instrument has the advantages of being low in power consumption, long in working time, good in moisture-proof performance and the like.
Description
Technical field
The present invention relates to a kind of temperature display recorder, especially relate to a kind of temperature display recorder that is applicable to Cold Chain Logistics.
Background technology
Cold Chain Logistics (Cold Chain Logistics) general reference refrigerating based food is being produced, is being preserved transportation, selling, to consumption before links in all the time in the regulation low temperature environment under, to guarantee food quality, reduce a systematic engineering of business of food loss.It is along with the development of scientific and technical progress, Refrigeration Technique is set up, and is to take the low temperature logistics process that refrigerating process is means as basis, the Refrigeration Technique of take.Therefore in Cold Chain Logistics, the temperature of product need to be monitored in real time, needs a kind of register instrument that can work for a long time, guarantees in whole logistics progress the real time record to product temperature.
Summary of the invention
Purpose of the present invention is exactly that a kind of low in energy consumption, temperature display recorder that is applicable to Cold Chain Logistics that can work for a long time is provided in order to overcome the defect that above-mentioned prior art exists.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of Cold Chain Logistics temperature display recorder comprises:
Temperature sensor;
Message processing module, connect temperature sensor, from temperature sensor, receives simulating signal, processes and obtain temperature information;
Display screen, the link information processing module, for displays temperature information;
Mini-printer, the link information processing module, for print temperature information;
Keyboard, the link information processing module, for the output function instruction;
Moisture-proof case, for installing described temperature sensor, message processing module, display screen, keyboard and mini-printer.
Described temperature sensor adopts thermistor.
Described message processing module comprises:
Modulate circuit, connect temperature sensor, for the simulating signal that temperature sensor is produced, carries out signal condition;
The A/D change-over circuit, connect modulate circuit, for will be digital signal through the analog signal conversion of signal condition;
Single-chip microcomputer, connect the A/D change-over circuit, and digital signal is processed and obtained temperature information;
Crystal oscillator, connect single-chip microcomputer, for clock frequency is provided;
Clock circuit, connect single-chip microcomputer, for real-time clock information is provided;
Storer, connect single-chip microcomputer, for the parameter of single-chip microcomputer with process the data that obtain.
Described message processing module also comprises the RS232 interface circuit, and the input end of this RS232 interface circuit connects single-chip microcomputer, and output terminal connects mini-printer by the serial ports socket.
Described single-chip microcomputer adopts the mode of interrupting to respond the key-press input of keyboard, and key-press input is carried out to the software de-jitter.
Described single-chip microcomputer is AT89S51.
Described storer is EEPROM.
The chip of described clock circuit is DS1302.
The chip of described A/D change-over circuit is TLC2543.
Compared with prior art, the whole circuit power consumption that the present invention adopts is low, can maintain long normal operation, surpasses 10s and enters the low consumption state after without button operation, and the working time under the low consumption state is 20 days to one month.In addition, the present invention adopts moisture-proof case, is applicable to the wet environments such as freezer.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
The master routine operational flow diagram that Fig. 2 is single-chip microcomputer of the present invention;
Fig. 3 is for printing the process flow diagram of runtime subroutine.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of Cold Chain Logistics temperature display recorder, comprise thermistor 1 that model is NTSD0XH103, modulate circuit 2, adopt A/D change-over circuit 3, AT89S51 single-chip microcomputer 4, crystal oscillator 5, keyboard 6, storer 7, DS1302 clock circuit 8, LCD display 9, RS232 interface circuit 10, serial ports socket 11, mini-printer 12 and the moisture-proof case of TLC2543.
Moisture-proof case is for installing other parts, and size is less, is not more than 102 * 70 * 25, and band is installed draw-in groove, the convenient installation.
Thermistor 1 is as the temperature-sensing element of temperature sensor, according to environment temperature, produces simulating signal, by modulate circuit 2 amplified, input A/D change-over circuit 3 after the signal condition such as filtering, be converted into digital signal.A/D change-over circuit 3 adopts TLC2543, and it is 12 bit serial analog to digital converters of TI company, and use switching capacity successively approximation technique completes the A/D transfer process.Owing to being the serial input structure, can save 51 series monolithic I/O resources, and moderate, resolution is higher, temperature-measuring range :-25 ℃～45 ℃; Temperature measurement accuracy: ± 0.5 ℃.
Digital signal input single-chip microcomputer 4 after analog to digital conversion, carry out after a series of processing obtaining the temperature information of environment, single-chip microcomputer adopts AT89S51 to carry out data processing and control, this chip has in-circuit emulation and online programming function, use serial port circuit to carry out emulation and programming, make performance history more for convenience, cost of development is lower.Single-chip microcomputer adopts the mode of interrupting to respond the key-press input of keyboard, and key-press input is carried out to the software de-jitter, after single-chip microcomputer obtains the low level information of I/O mouth, do not assert immediately that button is pressed, but 10 milliseconds of time delays or detection again after the longer time, if be still low, illustrate that button presses.Shake time when this has avoided that button is pressed.And after button release being detected, then time delay 5-10 millisecond, the shake on edge after eliminating, and then key assignments is processed.The main program flow of single-chip microcomputer 4 as shown in Figure 2, comprises the following steps: 1) the system operation that powers on; 2) initialization; 3) read clock and adopted value; 4) according to pre-set computation model, data are processed and stored; 5) LCD display shows data; 6) detect keyboard and whether press, if NO; Return to step 3), continue to wait for and interrupt; If yes, trigger and interrupt, carry out corresponding subroutine, take print subroutine as example, its flow process as shown in Figure 3.
That storer 7 of the present invention adopts is EEPROM, and concrete model is AT24C16, has the capacity of 24bit, connects single-chip microcomputer 4, for systematic parameter, preserves and data backup, and after power down, data can not lost.Display screen 9 is used with Character Mode LCD LCD1602 backlight, and fashion attractive in appearance, can show two line characters, and 16 of every row show at most 16 characters.
The temperature data of this registering instrument can be exported by mini-printer (being similar to the supermarket receipt), mini-printer 12 is realized the level conversion of TTL to RS232 by RS232 interface circuit 10, then by being connected to the serial ports socket 11 on RS232 interface circuit 10, realization is connected with single-chip microcomputer 4.
The whole circuit power consumption that the present invention adopts is low, can maintain long normal operation, surpasses 10s and enters the low consumption state after without button operation, and the working time under the low consumption state is 20 days to one month.
Claims (9)
1. a Cold Chain Logistics temperature display recorder, is characterized in that, comprising:
Temperature sensor;
Message processing module, connect temperature sensor, from temperature sensor, receives simulating signal, processes and obtain temperature information;
Display screen, the link information processing module, for displays temperature information;
Mini-printer, the link information processing module, for print temperature information;
Keyboard, the link information processing module, for the output function instruction;
Moisture-proof case, for installing described temperature sensor, message processing module, display screen, keyboard and mini-printer.
2. a kind of Cold Chain Logistics temperature display recorder according to claim 1, is characterized in that, described temperature sensor adopts thermistor.
3. a kind of Cold Chain Logistics temperature display recorder according to claim 1, is characterized in that, described message processing module comprises:
Modulate circuit, connect temperature sensor, for the simulating signal that temperature sensor is produced, carries out signal condition; The A/D change-over circuit, connect modulate circuit, for will be digital signal through the analog signal conversion of signal condition;
Single-chip microcomputer, connect the A/D change-over circuit, and digital signal is processed and obtained temperature information;
Crystal oscillator, connect single-chip microcomputer, for clock frequency is provided;
Clock circuit, connect single-chip microcomputer, for real-time clock information is provided;
Storer, connect single-chip microcomputer, for the parameter of single-chip microcomputer with process the data that obtain.
4. a kind of Cold Chain Logistics temperature display recorder according to claim 3, it is characterized in that, described message processing module also comprises the RS232 interface circuit, and the input end of this RS232 interface circuit connects single-chip microcomputer, and output terminal connects mini-printer by the serial ports socket.
5. a kind of Cold Chain Logistics temperature display recorder according to claim 3, is characterized in that, described single-chip microcomputer adopts the mode of interrupting to respond the key-press input of keyboard, and key-press input is carried out to the software de-jitter.
6. a kind of Cold Chain Logistics temperature display recorder according to claim 3, is characterized in that, described single-chip microcomputer is AT89S51.
7. a kind of Cold Chain Logistics temperature display recorder according to claim 3, is characterized in that, described storer is EEPROM.
8. a kind of Cold Chain Logistics temperature display recorder according to claim 3, is characterized in that, the chip of described clock circuit is DS1302.
9. a kind of Cold Chain Logistics temperature display recorder according to claim 3, is characterized in that, the chip of described A/D change-over circuit is TLC2543.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210195567.XA CN103487161A (en) | 2012-06-13 | 2012-06-13 | Cold chain logistics temperature display recording instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210195567.XA CN103487161A (en) | 2012-06-13 | 2012-06-13 | Cold chain logistics temperature display recording instrument |
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| CN103487161A true CN103487161A (en) | 2014-01-01 |
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| CN201210195567.XA Pending CN103487161A (en) | 2012-06-13 | 2012-06-13 | Cold chain logistics temperature display recording instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296913A (en) * | 2014-09-25 | 2015-01-21 | 中国包装科研测试中心 | Multifunctional equipment impact force monitor based on storage and conveying |
| CN104964753A (en) * | 2015-06-11 | 2015-10-07 | 双竞科技有限公司 | Wireless temperature recorder and cold-chain logistics whole-course monitoring system |
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| JPS58118929A (en) * | 1982-01-08 | 1983-07-15 | Yokogawa Hokushin Electric Corp | Temperature difference recorder |
| FR2683318A1 (en) * | 1991-11-05 | 1993-05-07 | Befic | Method and device for measuring temperature |
| CN201476885U (en) * | 2009-07-29 | 2010-05-19 | 徐州市精英电器技术有限公司 | Miniature card-insertion type temperature recorder |
| CN201583360U (en) * | 2009-12-23 | 2010-09-15 | 上海医药临床研究中心 | Double-probe wireless temperature sensor and cold chain monitoring system |
| CN201653579U (en) * | 2010-04-21 | 2010-11-24 | 内蒙古科技大学 | Portable intelligent temperature difference measuring instrument |
| CN201983880U (en) * | 2011-01-31 | 2011-09-21 | 北京昆仑海岸传感技术有限公司 | Intelligent sensor with RFID function and capable of storing temperature |
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2012
- 2012-06-13 CN CN201210195567.XA patent/CN103487161A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58118929A (en) * | 1982-01-08 | 1983-07-15 | Yokogawa Hokushin Electric Corp | Temperature difference recorder |
| FR2683318A1 (en) * | 1991-11-05 | 1993-05-07 | Befic | Method and device for measuring temperature |
| CN201476885U (en) * | 2009-07-29 | 2010-05-19 | 徐州市精英电器技术有限公司 | Miniature card-insertion type temperature recorder |
| CN201583360U (en) * | 2009-12-23 | 2010-09-15 | 上海医药临床研究中心 | Double-probe wireless temperature sensor and cold chain monitoring system |
| CN201653579U (en) * | 2010-04-21 | 2010-11-24 | 内蒙古科技大学 | Portable intelligent temperature difference measuring instrument |
| CN201983880U (en) * | 2011-01-31 | 2011-09-21 | 北京昆仑海岸传感技术有限公司 | Intelligent sensor with RFID function and capable of storing temperature |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104296913A (en) * | 2014-09-25 | 2015-01-21 | 中国包装科研测试中心 | Multifunctional equipment impact force monitor based on storage and conveying |
| CN104964753A (en) * | 2015-06-11 | 2015-10-07 | 双竞科技有限公司 | Wireless temperature recorder and cold-chain logistics whole-course monitoring system |
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Application publication date: 20140101 |