CN101769884A - Indicator for forecasting shelf life of cold fresh pork - Google Patents
Indicator for forecasting shelf life of cold fresh pork Download PDFInfo
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- CN101769884A CN101769884A CN200910201524A CN200910201524A CN101769884A CN 101769884 A CN101769884 A CN 101769884A CN 200910201524 A CN200910201524 A CN 200910201524A CN 200910201524 A CN200910201524 A CN 200910201524A CN 101769884 A CN101769884 A CN 101769884A
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Abstract
The invention relates to an indicator for forecasting the shelf life of cold fresh pork, belonging to the technical field of detecting the quality of the pork by acquiring the temperature of the pork. The indicator forecasts the shelf life of the pork by timely acquiring the temperature of the pork in the circulation process from output to sell. The indicator has small volume and convenient use, can be directly attached to the surface of the cold fresh pork, and timely updates and displays the temperature, the shelf life and the system time of the fresh pork. The indicator uses a high-precision temperature sensor DS18B20 to acquire the temperature of the surface of the cold fresh pork, transmits the temperature value to a micro controller MSP430F1XX through a data wire DQ, uses the controller to forecast the real-time shelf life based on the TTT theory of the temperature, and uses a liquid crystal display LM6059BCW to display real-time temperature, the shelf life, the system time and the food names. The system time, the real-time temperature and the shelf life are all memorized in an extended memory card every 1 hour, and can be transmitted to a computer through serial ports of the indicator as required by users. The indicator has high precision, low energy consumption, multiple functions and convenient operation, and effectively solves the problem for forecasting the shelf life of the cold fresh pork during circulating.
Description
Technical field
The present invention is a kind of by being attached to the temperature sensor real time temperature on cold fresh pork surface, calls its shelf life of algorithm predicts in the rule base again and uses display screen to show the indicator of several data.
Background technology
Current, the consumer is oriented in the generation great change to the consumption of pork, and its demand to " quality-assured meat " increases greatly, has only the cold fresh pork of safer health, more nutrition could satisfy its consumption demand.Under such demand guiding, the security of food and trackability will be the focuses that the consumer pays close attention to.But up to now, there is not electronic type cold fresh pork Quality Detection device to occur as yet.
The forecasting shelf life device of existing dairy products is with the embedded system principle design, there is more shortcoming, as: prediction accuracy is low, power supply power supply, power consumption height, volume big and it is inconvenient to use, and the query function trackability of food (that is: can't guarantee) that does not possess historical temperature and shelf life, being in critical point in Quality of Dairy Products can not Realtime Alerts etc., is applied in actual life.Therefore, the forecasting shelf life device that be badly in need of a kind of high precision of prediction, small and exquisite, super low-power consumption, can review historical data, all can conveniently use in any stage of cold fresh pork.
Summary of the invention
The purpose of invention forecasting shelf life of cold fresh pork device is, for cold fresh pork provides a kind of real-time Quality Detection instrument, solve the cold fresh pork quality prediction and be difficult to follow environmental change and the difficult problem of real-time change, and support the function of reviewing of its historical quality delta data.
For realizing above-mentioned functions, this indicator is gathered the real time temperature of cold fresh pork every the set time by temperature sensor DS18B20, bidirectional data transfers line DQ by temperature sensor transfers to microprocessor MSP430F1XX with temperature value, and microprocessor is selected the real-time remaining shelf life of certain the rule prediction cold fresh pork in the forecasting shelf life rule base according to this temperature value; Then, LCDs LM6059BCW real-time update temperature, shelf life and system time.When the real time temperature of cold fresh pork was higher than temperature threshold, the flicker of displays temperature value was reported to the police with the prompting user on the liquid crystal display, reported to the police and once be lower than temperature threshold until temperature in every interval in 30 minutes; When the real-time shelf life of cold fresh pork was lower than the shelf life threshold value, buzzer warning was with the prompting user, reported to the police and once sell or the system prediction end until cold fresh pork in every interval in 30 minutes.Cold fresh pork quality, the robotization of environmental aspect, the intelligent detection have finally been realized.
The used software of this indicator for forecasting shelf life mainly comprises master routine, temperature acquisition subroutine, shelf life counting subroutine, temperature alarming subroutine, shelf life warning subroutine, data storage subroutine, liquid crystal display subroutine, system time runtime subroutine, with host computer communicator program etc.
Described indicator comprises super low-power consumption microprocessor chip MSP430F1XX and peripheral circuit thereof, temperature sensor DS18B20 module, singly-bound key-press module, shelf life alarm module, liquid crystal display LM6059BCW display module, data storage AT24C64 module, calendar clock chip DS1302 module and based on the communication module of serial ports RS232, the module composition frame chart of each module and each chip chamber connecting circuit and electric signal circuit are seen Fig. 1 and Fig. 2.Wherein, microprocessor MSP430F1XX receives the temperature value that temperature sensor DS18B20 collects, calculate shelf life according to certain rule in this temperature value selective rule storehouse, title (cold fresh pork), temperature, shelf life, system time are sent by liquid crystal display LM6059BCW to show then.Wherein, system time is provided by calendar clock chip DS1302, and the form that this time shows on liquid crystal display is " month in and month out everyday constantly: divide ".Each real time temperature that upgrades, shelf life, system time all are transferred among the pin-saving chip AT24C64 with the communication mode of I2C and store in real time, when treating that the user need review historical data, just these data can be accessed on the liquid crystal display of this indicator and to show or to be uploaded to computer and check with text mode.High precision of prediction, small and exquisite, super low-power consumption, can review historical data, advantage such as all can conveniently use in any stage of cold fresh pork, for the quality of monitoring cold fresh pork in real time provides the high efficient and convenient instrument, greatly improved the quality degree of protection and the utilization ratio of cold fresh pork.
Description of drawings
Fig. 1 is a composition module diagram of the present invention
Fig. 2 is a hardware design synoptic diagram of the present invention
Fig. 3 is a systemic-function synoptic diagram of the present invention
Fig. 4 is a system of the present invention general flow chart
Embodiment
Following content is in conjunction with the accompanying drawings indicator for forecasting shelf life of the present invention to be described in further detail.
Indicator for forecasting shelf life of cold fresh pork, its form module diagram comprise super low-power consumption micro treatment module (MSP430F1XX), temperature sensor module (DS18B20), singly-bound key-press module (reset, menu, redirect, determine,＜), buzzer warning module (shelf life warning), LCD MODULE (LM6059BCW), data memory module (AT24V64), calendar clock module (DS1302), serial communication modular (RS232 communication protocol) and power supply processing module (5V Li battery) etc.; Wherein, the temperature alarming function is all realized by software.
At first, temperature sensor module is gathered the real time temperature on cold fresh pork surface at default time point, microprocessor adopts the corresponding first order kinetics reaction equation and the real-time shelf life of Arrhenius Equation for Calculating cold fresh pork according to certain the bar rule in this temperature value selection forecasting shelf life rule base; Then, microprocessor shows these data transmission to liquid crystal display.When temperature value or shelf time value were crossed threshold value, indicator was reported to the police; The temperature threshold of systemic presupposition is 20 ℃, and the shelf life threshold value is 1.5 days, and the user can revise temperature threshold and shelf life threshold value as required.At last, sell or shelf life when being zero when cold fresh pork, indicator finishes this time shelf life forecasting process.Each real time temperature, shelf life, the system time of indicator all transfers among the pin-saving chip AT24C64 according to I2C communication protocol and preserves; When being used to need these data, microprocessor is sense data from this storage chip just, through USART0 with data according to the communication mode of RS232 serial port protocol with these data transmission to computer, thereby can review the quality change procedure of cold fresh pork.
Native system memory capacity big (60KB FLASH, 64Kb data storage), computing power are strong, the software modularity intellectuality, have unified complete external debug jtag interface and universal standard RS232 serial communication port, and chip MSP430F1XX reserved a lot of ports, thereby makes this indicator have the dirigibility of favorable expansibility and height.The device hardware circuit design comprises microprocessor based on MSP430F1XX, temperature sensor, LCDs, pin-saving chip, calendar clock chip, singly-bound button, hummer and based on the serial communication circuit of RS232, has constituted the embedded hardware platform of each chip connecting circuit and electric signal connecting circuit.The software of this indicator adopts modular design, each physical device all has corresponding subroutine to finish function separately, liquid crystal display subroutine as LCDs has realized the welcome interface, the systemic-function menu interface, set the initial parameter interface, real-time interface, the temperature query interface, data transmission interface, initial shelf life interface, the starter system time surface, change default threshold interface, the data transmission procedure interface, the DTD interface, the inquiry prediction finishes the interface, prediction finishes the demonstration at 13 interfaces such as interface, cooperates 6 buttons of this indicator can realize the quality monitoring of cold fresh pork simply efficiently.Wherein, " resetting " key can be realized the reset operation of indicator, and indicator is reruned; When indicator operates in 13 any interfaces in the interface, all can make this interface turn back to the systemic-function menu interface by " menu " key.
The major technique that apparatus of the present invention adopt is as follows:
1. embedded technology
For the design of whole indicator, be based on that the theory of embedded technology carries out.The advantage of embedded system is an acquired signal in a large number, and processing speed is fast, and real-time is good; The super low-power consumption microprocessor MSP430F1XX that the master controller of this indicator adopts TI company to produce, it carries 60KB FLASH and 2KB RAM, FLASH is mainly used in storage system software, temperature acquisition software, shelf life software for calculation etc., RAM is mainly used in the intermediate variable of storage indicator operational process.The predominant frequency of MSP430F1XX can reach 8Mhz, and the ability of its fast processing data is protected, and the existence of hardware multiplier makes system can obtain the real-time shelf life of white shrimp quickly; Its USART supports UART function and SPI function, and this indicator adopts the UART mode to realize the quick transmission of system data; Timer has been realized the timing function to temperature acquisition time and shelf life computing time, when timing at interval then, with regard to the trigger indicator collecting temperature and calculate shelf life.
2.I2C technology
Data transmission between microprocessor MSP430F1XX and the data-carrier store AT24C64 adopts the I2C communication technology, and I2C universal serial bus technology generally has two signal wires, and one is two-way data line SDA, and another root is clock line SCL.The serial data line SDA interface of pin-saving chip AT24C64 is two-way, and output circuit is used for sending data on the MSP430F1XX bus, and input circuit is used to receive the data on the MSP430F1XX bus.And serial time clock line SCL also is two-way, and the Master MSP430F1XX as the control bus data transmit will pass through SCL output circuit tranmitting data register signal on the one hand, also wants the SCL level on the testbus on the other hand; As the Slave AT24C64 that accepts Host Command, be by the signal on operation of the SCL signal on the bus or the reception SDA.The storage of the real time data of this indicator and inquiry are to control Slave AT24C64 by Master MSP430F1XX by the cooperation transmission instruction and data of SCL and SDA to realize.
3.RS232 technology
This indicator is stored in the I2C communication mode and realizes being stored to data in the chip AT24C64, when the user needs, can transfer on the host computer by RS232 serial communication mode.RS232 develops comparatively ripe serial data host-host protocol up to now, the data transmission procedure signal stabilization, do not need external power supply, only need No. 2, No. 3 pins just can realize data transmission with the USART0 of microprocessor MSP430F1XX, therefore be selected as the communication protocol of this indicator and computer.The UTXD0 of systematic microprocessor MSP430F1XX, URXD0 support the UART data transfer mode, be connected with No. 2, No. 3 pins of RS232 serial ports respectively, can realize the transmission of data, wherein the data packets for transmission of the self-defined RS232 of this indicator and data transmission procedure.
Claims (4)
1. the present invention is a kind of indicator for forecasting shelf life of cold fresh pork based on super low-power consumption embedded microprocessor MSP430F1XX, mainly by microprocessor MSP430F1XX, temperature sensor DS1302, LCD LM6059BCW, calendar clock chip DS1302, RS232 serial ports, 64Kb pin-saving chip AT24C64, buzzer alarm circuit, 6 separate single keys (that is: reset, menu, redirect, affirmation,＜) connecting circuit of peripheral circuit such as circuit and each chip chamber forms.
2. based on the indicator for forecasting shelf life of cold fresh pork of super low-power consumption embedded microprocessor MSP430F1XX, its 60KBFLASH that carries is mainly used in the storage system code, as: master routine, temperature acquisition subroutine, shelf life counting subroutine, temperature alarming subroutine, shelf life warning subroutine, data storage subroutine, liquid crystal display subroutine, system time runtime subroutine, with host computer communicator program etc.; Intermediate data when the 2KB RAM that it carries is mainly used to the storage system operation, the process data during as the calculating shelf life etc.Wherein, communicating by letter with host computer is by the RS232 serial ports, and each data packets for transmission length is 4 bytes, and one group of data is formed in every transmission 3 times (that is: system time, temperature, shelf lifes).In addition, the data storage subroutine of this indicator, the real time data when being mainly used in the storage indicator operation is stored with the communication mode of I2C; When treating that the user requires indicator to communicate by letter with host computer, then call the real time data of storage, through serial ports with data transmission to computer, and store with the .txt text mode.
3. based on the indicator for forecasting shelf life of cold fresh pork of super low-power consumption embedded microprocessor MSP430F1XX, its shelf life computational algorithm is based on the shelf life of TTT (Time-Temperature-Tolerance) theoretical prediction cold fresh pork.Cold fresh pork has 5 indexs such as total volatile basic nitrogen (TVBN), index of fish freshness (K value), micro organism quantity (total plate count), subjective appreciation, pH value and can be used as its shelf life parameters calculated, this indicator is selected TVBN, K value, the total plate count parameter as one-level chemical dynamic model and Arrhenius equation, the shelf life of different rule calculating cold fresh porks in the alternation rule storehouse under different temperature conditions.
4. indicator for forecasting shelf life of cold fresh pork is selected the 5V lithium battery power supply for use, so the microprocessor of selecting for use is super low-power consumption chip MSP430F1XX, and during the operation of its each module fully independently, that is: timer, input/output end port, house dog, LCDs etc. can be under the state of host CPU dormancy independent operating.Chip MSP430F1XX operates in low-power consumption mode LMP0 (5V when the indicator operate as normal, 55uA), in the set time, wake up once enter activity pattern (5V, 300uA), in update system time, real time temperature, enter low-power consumption mode LMP0 behind the shelf life in real time.More do not use the indicator serviceable life of low-power consumption mode, this indicator is 4.75 times of the former serviceable life in life-span.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102116768A (en) * | 2010-08-06 | 2011-07-06 | 上海海洋大学 | Design and realization for intelligent prediction device of aquatic product shelf life on basis of RFID (Radio Frequency Identification Devices) |
| CN102117418A (en) * | 2010-08-06 | 2011-07-06 | 上海海洋大学 | Design and implementation of aquatic product shelf life prediction information reader based on RFID (radio-frequency identification) |
| CN103593746A (en) * | 2013-10-24 | 2014-02-19 | 浙江求是人工环境有限公司 | Cold-chain logistics management device with shelf life prediction function, method thereof and application thereof |
| CN103679370A (en) * | 2013-12-16 | 2014-03-26 | 东南大学 | Real-time monitoring system for shelf lives of fresh agricultural products |
| CN104330539A (en) * | 2014-10-28 | 2015-02-04 | 浙江大学 | Chilled fresh pork shelf life span forecasting method based on internet of things architecture |
| CN104764538A (en) * | 2014-05-28 | 2015-07-08 | 党长青 | Temperature acquisition system |
| CN102117418B (en) * | 2010-08-06 | 2016-12-14 | 上海海洋大学 | The design of aquatic products forecasting shelf life information reader-writer based on RFID and realization |
| CN106290749A (en) * | 2016-07-22 | 2017-01-04 | 北京农业信息技术研究中心 | Based on specific scent fingerprint, fruit is carried out the method and device of forecasting shelf life |
| CN108985794A (en) * | 2018-07-01 | 2018-12-11 | 甘肃万维信息技术有限责任公司 | A kind of meat quality safety is supervised in overall process traceable method |
| US10318781B2 (en) | 2015-03-30 | 2019-06-11 | Temptime Corporation | Two dimensional barcode with dynamic environmental data system, method, and apparatus |
| CN110031348A (en) * | 2019-04-26 | 2019-07-19 | 滁州学院 | A kind of hand-held Fresh Grade Breast degree of lignification detection device and its detection method |
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| CN111932184A (en) * | 2020-09-07 | 2020-11-13 | 南京信息工程大学 | Sustainable cold chain logistics system of cold fresh meat trade |
| CN112731834A (en) * | 2020-12-22 | 2021-04-30 | 重庆德科电子仪表有限公司 | System and method for low-power-consumption driving of indicator lamp of full-segment code instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102116768A (en) * | 2010-08-06 | 2011-07-06 | 上海海洋大学 | Design and realization for intelligent prediction device of aquatic product shelf life on basis of RFID (Radio Frequency Identification Devices) |
| CN102117418A (en) * | 2010-08-06 | 2011-07-06 | 上海海洋大学 | Design and implementation of aquatic product shelf life prediction information reader based on RFID (radio-frequency identification) |
| CN102117418B (en) * | 2010-08-06 | 2016-12-14 | 上海海洋大学 | The design of aquatic products forecasting shelf life information reader-writer based on RFID and realization |
| CN103593746A (en) * | 2013-10-24 | 2014-02-19 | 浙江求是人工环境有限公司 | Cold-chain logistics management device with shelf life prediction function, method thereof and application thereof |
| CN103679370A (en) * | 2013-12-16 | 2014-03-26 | 东南大学 | Real-time monitoring system for shelf lives of fresh agricultural products |
| CN103679370B (en) * | 2013-12-16 | 2016-06-29 | 东南大学 | A kind of fresh agricultural products shelf life real-time monitoring system |
| CN104764538A (en) * | 2014-05-28 | 2015-07-08 | 党长青 | Temperature acquisition system |
| CN104330539A (en) * | 2014-10-28 | 2015-02-04 | 浙江大学 | Chilled fresh pork shelf life span forecasting method based on internet of things architecture |
| US10318781B2 (en) | 2015-03-30 | 2019-06-11 | Temptime Corporation | Two dimensional barcode with dynamic environmental data system, method, and apparatus |
| US11182579B2 (en) | 2015-03-30 | 2021-11-23 | Temptime Corporation | Two dimensional barcode with dynamic environmental data system, method, and apparatus |
| US12067455B2 (en) | 2015-03-30 | 2024-08-20 | Temptime Corporation | Two dimensional barcode with dynamic environmental data system, method, and apparatus |
| US11455483B2 (en) | 2015-03-30 | 2022-09-27 | Temptime Corporation | Two dimensional barcode with dynamic environmental data system, method, and apparatus |
| US10546172B2 (en) | 2015-03-30 | 2020-01-28 | Temptime Corporation | Two dimensional barcode with dynamic environmental data system, method, and apparatus |
| CN106290749A (en) * | 2016-07-22 | 2017-01-04 | 北京农业信息技术研究中心 | Based on specific scent fingerprint, fruit is carried out the method and device of forecasting shelf life |
| CN108985794A (en) * | 2018-07-01 | 2018-12-11 | 甘肃万维信息技术有限责任公司 | A kind of meat quality safety is supervised in overall process traceable method |
| CN110031348A (en) * | 2019-04-26 | 2019-07-19 | 滁州学院 | A kind of hand-held Fresh Grade Breast degree of lignification detection device and its detection method |
| CN111932184A (en) * | 2020-09-07 | 2020-11-13 | 南京信息工程大学 | Sustainable cold chain logistics system of cold fresh meat trade |
| CN112731834A (en) * | 2020-12-22 | 2021-04-30 | 重庆德科电子仪表有限公司 | System and method for low-power-consumption driving of indicator lamp of full-segment code instrument |
| CN112731834B (en) * | 2020-12-22 | 2022-07-01 | 重庆德科电子仪表有限公司 | System and method for low-power-consumption driving of indicator lamp of full-segment code instrument |
| US11734539B2 (en) | 2021-04-05 | 2023-08-22 | Temptime Corporation | Dynamic optical property windows in indicia with sensors |
| US12056552B2 (en) | 2021-04-05 | 2024-08-06 | Temptime Corporation | Dynamic optical property windows in indicia with sensors |
| US12020097B1 (en) | 2023-01-31 | 2024-06-25 | Temptime Corporation | 2D bar code using active overlays |
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Application publication date: 20100707 |