CN102661803A - Low power consumption wireless active temperature label - Google Patents
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Abstract
The invention relates to a low power consumption wireless active temperature label which comprises a temperature sensor, a radio frequency electronic module, a processor module, a power module and an antenna, wherein the temperature sensor is used for measuring the temperature value of a to-be-detected object; the processor module is used for controlling the work of all the other modules, acquiring the temperature value of the to-be-detected object measured by the temperature sensor, receiving user commands and outputting prompting message, and is in an inoperative state when not used; the radio frequency electronic module is used for storing temperature value information and sending temperature value information to an external card reader; and the power module is used for providing working voltage for the low power consumption wireless active temperature label. The low power consumption wireless active temperature label provided by the invention has a temperature measuring function as well as the functions of an electronic tag, all the temperature collection period, data sending period and sending frequency can be adjusted automatically, battery capacity check can be performed too, and the low power consumption wireless active temperature label has the characteristics of initiative submission, passive inquiry, low power consumption and the like.
Description
Technical field
The present invention relates to temperature survey and RF application, be specifically related to the active temperature label of a kind of low-consumption wireless.
Background technology
For the monitoring temperature in the cold chain transportation process; Be to adopt the mode of TR to measure and write down the temperature in whole compartment traditionally; Be that a TR is put in each compartment, measure and write down the temperature in the transportation, after goods reaches the transportation destination; TR is linked to each other with computer the data importing computing machine, carry out data statistics and analysis again.Traditional TR costs an arm and a leg, monitored object is single, do not possess Digital ID, need shortcoming such as wired connection, can't satisfy in the cold chain transportation process requirement for cargo temperature monitoring in the compartment.
Summary of the invention
Technical matters to be solved by this invention provides the active temperature label of a kind of low-consumption wireless, to realize wireless temperature collection and data transmission through lower power consumption.
The technical scheme that the present invention solves the problems of the technologies described above is following: the active temperature label of a kind of low-consumption wireless; Comprise temperature sensor, radio frequency electric module, processor module, power module and antenna; Wherein, said temperature sensor is used to measure the temperature value of determinand; Said processor module is used to control each module work, and obtains the temperature value of the determinand of said temperature sensor measurement, and receives user instruction, output information, is in dormant state during inoperative; Said radio frequency electric module is used for the storing temperature value information, and temperature value information is sent to outside card reader; Said power module is used to the active temperature label of low-consumption wireless work capacity is provided.
Further, the active temperature label of said low-consumption wireless also comprises the analog-to-digital conversion module that is connected with processor module, and said analog-to-digital conversion module is used for converting the analog quantity of the temperature value of the determinand of temperature sensor measurement into corresponding digital quantity; Voltage transitions with power module is remaining electric weight simultaneously; And the digital quantity and the remaining electric weight of temperature value transferred to processor module.
Further, said radio frequency electric module is used for dynamically adjusting emissive power according to the intensity of signal, when signal is more weak, improves emissive power; When signal is more intense, then reduce emissive power.
Further, the active temperature label of said low-consumption wireless also comprises the clock module that is connected with processor module, and said clock module is used to produce system clock, with the timing wake-up processor module.
Further; The active temperature label of said low-consumption wireless also comprises the human-computer interaction module that is connected with processor module, said human-computer interaction module be used to respond the active temperature label of the said low-consumption wireless of user inquiring whether operate as normal instruction and show the duty of the active temperature label of said low-consumption wireless.
Further, said human-computer interaction module comprises keyboard input module that is used for the instruction of the active temperature label of the said low-consumption wireless of user input query duty and the display module that is used to show the active temperature label of said low-consumption wireless duty.
Further, said periodicity is meant the temperature acquisition cycle of manual formulation or the temperature acquisition cycle that the active temperature label of said low-consumption wireless is regulated voluntarily.
Further; When the active temperature label of said low-consumption wireless is in the mode of operation of regulating the temperature acquisition cycle voluntarily; The temperature acquisition cycle is adjusted according to the temperature of testee automatically; In the temperature range of safety,, and when detecting temperature value and reach fence coverage, then improve the frequency that temperature value is gathered with slower frequency collection temperature value.
Further, said temperature sensor adopts temperature-sensing element (device) to form, and can be a kind of in thermistor or the thermal diode or other have the components and parts of same function.
Adopt the beneficial effect of technique scheme to be: to adopt the active temperature label of low-consumption wireless of the present invention; Can have the function of temperature survey and electronic tag simultaneously; And temperature acquisition cycle and data transmitting period can automatically adjust, and can also carry out the battery electric quantity detection and have low in power consumption.
Description of drawings
Fig. 1 is the logical organization synoptic diagram of the active temperature label of low-consumption wireless in the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing principle of the present invention and characteristic are described, institute gives an actual example and only is used to explain the present invention, is not to be used to limit scope of the present invention.
The embodiment of the invention discloses the active temperature label of a kind of low-consumption wireless; Fig. 1 is the logical organization synoptic diagram of the active temperature label of low-consumption wireless in the embodiment of the invention; As shown in Figure 1: as to comprise temperature sensor 101, radio frequency electric module 102, processor module 105, power module 104 and antenna 103; Wherein, said temperature sensor 101 is used to measure the temperature value of determinand; Said processor module 105 is used to control each module work, and obtains the temperature value of the determinand of said temperature sensor 101 measurements, and receives user instruction, output information, is in dormant state during inoperative; Said radio frequency electric module 102 is used for the storing temperature value information, and temperature value information is sent to outside card reader; Said power module 104 is used to the active temperature label of low-consumption wireless work capacity is provided.
In embodiments of the present invention; The active temperature label of said low-consumption wireless also comprises the analog-to-digital conversion module 107 that is connected with processor module 105, and said analog-to-digital conversion module 107 is used for converting the analog quantity of the temperature value of the determinand of temperature sensor 101 measurements into corresponding digital quantity; Voltage transitions with power module 104 is remaining electric weight simultaneously; And the digital quantity and the remaining electric weight of temperature value transferred to processor module 105.
In the above-described embodiments, the effect of said processor module 105 is to coordinate each module, the collection of completion temperature, data transmission, man-machine interaction etc.; In the present embodiment, said processor module 105 can adopt the Si1000 chip of SILICON LAB S. A. to realize.
Said radio frequency electric module 102 is used for dynamically adjusting emissive power according to the intensity of signal, when signal is more weak, improves emissive power, to guarantee that data are effectively received; And signal is when more intense, thereby then can reduce emissive power can reduce signal emission institute consumed current; In the present embodiment, said radio frequency electric module 102 can be integrated by the Si1000 chip internal, and its operating frequency range is 240MHz～960MHz, and emissive power is 1dBm～20dBm.
Said temperature sensor 101 adopts temperature-sensing element (device)s to form, can for a kind of in thermistor or the thermal diode or other have the components and parts of same function, and its function is mainly measured temperature values, and converts temperature value into corresponding voltage value with it; In the present embodiment, said temperature sensor 101 adopts the STLM20 of ST company, and processor module 105 can obtain current temperature value through conversion again through the magnitude of voltage that data converter reads this sensitive element.
The effect of said power module 104 is exactly necessary electric energy to the active temperature label of low-consumption wireless to be provided; In the present embodiment; The active temperature label of this low-consumption wireless adopts the powered battery of 3V, can satisfy the WV of System on Chip/SoC like this, can reduce the overall power of system again as far as possible.
The function of said analog-to-digital conversion module 107 is exactly with analog quantity voltage value converting digital amount, and the analog-to-digital conversion module 107 main functions of accomplishing temperature voltage value and battery electric quantity conversion can convert magnitude of voltage into concrete temperature value through conversion.Through can obtain the electric weight of remaining power to the conversion of cell voltage.In the present embodiment, said analog-to-digital conversion module 107 can be made up of independent chip, also can be integrated by processor module 105, and the SI1000 chip that for example native system adopted itself is with regard to integrated analog-to-digital conversion module.
The active temperature label of said low-consumption wireless also comprises the clock module 106 that is connected with processor module 105, and said clock module 106 is used to produce system clock, and major function is exactly a timing wake-up processor module 105.In order to effectively reduce power consumption, the active temperature label of this low-consumption wireless is in dormant state usually, reach the time of reservation when system clock after, then system clock module 106 can wake processor module 105 up, to move next step task.In the present embodiment, real-time clock module 106 can be that independent chip also can be integrated by processor module 105, the Si1000 chip that is for example adopted in the present embodiment, and itself just is integrated with real-time clock module.
The active temperature label of said low-consumption wireless also comprises the human-computer interaction module 108 that is connected with processor module 105, said human-computer interaction module 108 be used to respond the active temperature label of the said low-consumption wireless of user inquiring whether operate as normal instruction and show the duty of the active temperature label of said low-consumption wireless.Wherein, said human-computer interaction module 108 comprises key-press input unit that is used for the instruction of the active temperature label of the said low-consumption wireless of user input query duty and the display unit that is used to show the active temperature label of said low-consumption wireless duty.In order to keep lower power consumption, the temperature label can enter into park mode automatically after having sent data, the instruction that can't the response external wireless transmitting-receiving equipments be sent this moment.The user can wake this temperature label up through key-press input unit, then can accomplish the configuration of parameter after waking up through the external wireless receiving equipment; In addition, also can be through the collection of the direct start-up temperature of key-press input unit or the collection of closing temperature.Provide the information indication of user through display unit such as LED with necessity; When temperature label during in operate as normal; LED light is in closed condition, when user's operation push-button input block, then can point out the user duty of present temperature label through the indication of LED.
Further set forth the characteristics of the active temperature label of low-consumption wireless of the present invention below in conjunction with above-mentioned structrual description:
1, the function that has temperature survey and electronic tag simultaneously
The temperature label is except accomplishing temperature survey; Also built-in unique coding of 64; Coding can be used for representing product information; The temperature label sends to outside receiving equipment together with temperature data and 64 s' coding, and outside receiving equipment can be known the product coding of temperature correlation therewith according to coding simultaneously when obtaining temperature value;
2, the mode of operation of low-power consumption
This temperature label provides energy by battery, so the size of power consumption is directly determining the cruising time of product, has adopted following mode to reduce system power dissipation in this patent:
1) selects the variable radio frequency electric unit of emissive power
Power variable can come the emissive porwer of dynamic adjustments signal according to the intensity of signal to mean the temperature label; If it is higher that the external wireless receiving equipment receives the strength ratio of signal; Give this temperature sensor through order with information transmission, then temperature sensor can reduce the emissive power of oneself, and emissive power is directly relevant with working current again; The inner integrated radio-frequency module of Si1000 for example, the emissive power of 1DB then working current is 18mA; Its working current of the emissive power of 13DB is 30mA; The emissive power of 20DB is 85mA; So the reduction of emissive power means reducing of power consumption;
2) data communication method adopts the mode that combines with passive query that initiatively reports
Data initiatively report mechanism for passive query; Passive query means need receive the data that main frame sends; Ability is with data upload, and the signal demand that the wait external unit sends is opened the reception of radio frequency unit, therefore needs the extra electric current of consumption; The data of temperature labeling requirement collection mainly contain temperature value and battery electric quantity; After accomplishing, data acquisition sends the data to outside receiving equipment with the mode that initiatively reports; Can be in this temperature label after data are sent and to be in of short duration wake-up states; Wait for the acknowledgement command that external unit sent, after receiving acknowledgement command, can get into dormant state immediately; If do not receive the acknowledgement command that the external wireless read-write equipment is sent then in official hour, can get into dormant state automatically yet, to avoid because of wait as long for additive decrementation electric current.The temperature label also has multiple parameters to dispose to adopt initiatively to report the advantage of the mode that combines with passive query to be and can when reducing system power dissipation, to make it that working method is flexibly arranged as much as possible as far as possible except temperature and battery electric quantity need be gathered.And the change of working method is by the electric current that can further reduce system.For example: the emissive power of signal, the gap periods of temperature acquisition, temperature value modified value etc., the mode that the employing passive query is set of parameter, the query statement that the temperature label has only in running order just meeting response external equipment to send;
3) the data report cycle of variable period
The user can revise the report cycle of data as required, and the time that data report, shorter then corresponding power consumption was also just high more, thus can satisfy under the prerequisite of system requirements, prolong as far as possible data on call time and reduce power consumption; The temperature acquisition variable period
4) dormancy mechanism in employing cycle
Processor module will get into into dormant state after accomplishing corresponding temperature acquisition and data transmission, only remains with real-time clock work, reduces the power consumption of processor module with this;
5) processor module is closed peripheral circuit when dormancy
The power supply of temperature sensor, the detection of battery electric quantity all are to be controlled by triode; When need not carrying out temperature acquisition with the dump of temperature sensor; Same battery electric quantity module is also cut off its power supply in the time need not carrying out the battery electric quantity collection also by the control of triode type;
3, the variable mode of operation of temperature acquisition cycle and data transmitting period
It periodically can manually be formulated or regulate voluntarily in this patent; When being in automatic adjusting pattern; The temperature acquisition cycle can be adjusted according to the temperature of testee automatically; In the temperature range of safety,, and when detecting temperature value and reach fence coverage, then improve the frequency of its collection with slower frequency collection temperature value; Wherein, the user can be provided with safe temperature range voluntarily;
4, battery electric quantity measuring ability
This patent provides the function of battery voltage detection, the periodic measurement battery voltage value, and this magnitude of voltage sent the data to the external data collecting device with the mode that initiatively reports.External wireless device can in time obtain the battery electric quantity of temperature label to change timely.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the active temperature label of low-consumption wireless is characterized in that, comprise temperature sensor, radio frequency electric module, processor module, power module and antenna, wherein, said temperature sensor is used to measure the temperature value of determinand; Said processor module is used to control each module work, and periodically obtains the temperature value of the determinand of said temperature sensor measurement, and receives user instruction, output information, is in dormant state during inoperative; Said radio frequency electric module is used for the storing temperature value information, and temperature value information is sent to outside card reader; Said power module is used to the active temperature label of low-consumption wireless work capacity is provided.
2. the active temperature label of low-consumption wireless according to claim 1; It is characterized in that; The active temperature label of said low-consumption wireless also comprises the analog-to-digital conversion module that is connected with processor module, and said analog-to-digital conversion module is used for converting the analog quantity of the temperature value of the determinand of temperature sensor measurement into corresponding digital quantity; Voltage transitions with power module is remaining electric weight simultaneously; And the digital quantity and the remaining electric weight of temperature value transferred to processor module.
3. the active temperature label of low-consumption wireless according to claim 1 is characterized in that, said radio frequency electric module also is used for dynamically adjusting emissive power according to the intensity of signal, when signal is more weak, improves emissive power; When signal is more intense, then reduce emissive power.
4. the active temperature label of low-consumption wireless according to claim 1 is characterized in that, said temperature sensor adopts temperature-sensing element (device) to form.
5. the active temperature label of low-consumption wireless according to claim 1; It is characterized in that; The active temperature label of said low-consumption wireless also comprises the clock module that is connected with processor module, and said clock module is used to produce system clock, with the timing wake-up processor module.
6. the active temperature label of low-consumption wireless according to claim 1; It is characterized in that; The active temperature label of said low-consumption wireless also comprises the human-computer interaction module that is connected with processor module, said human-computer interaction module be used to respond the active temperature label of the said low-consumption wireless of user inquiring whether operate as normal instruction and show the duty of the active temperature label of said low-consumption wireless.
7. the active temperature label of low-consumption wireless according to claim 6; It is characterized in that said human-computer interaction module comprises keyboard input module that is used for the instruction of the active temperature label of the said low-consumption wireless of user input query duty and the display module that is used to show the active temperature label of said low-consumption wireless duty.
8. the active temperature label of low-consumption wireless according to claim 1 is characterized in that, said periodicity is meant the temperature acquisition cycle of manual formulation or the temperature acquisition cycle that the active temperature label of said low-consumption wireless is regulated voluntarily.
9. the active temperature label of low-consumption wireless according to claim 8; It is characterized in that; When the active temperature label of said low-consumption wireless was in the mode of operation of regulating the temperature acquisition cycle voluntarily, the temperature acquisition cycle was adjusted according to the temperature of testee automatically, in the temperature range of safety with slower frequency collection temperature value; And when detecting temperature value and reach fence coverage, then improve the frequency that temperature value is gathered.
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| CN103281055A (en) * | 2013-04-28 | 2013-09-04 | 深圳市芯海科技有限公司 | RC (resistance-capacitance) oscillator |
| CN104620266A (en) * | 2011-12-27 | 2015-05-13 | 吉列公司 | Apparatus and method for providing product information |
| CN104966119A (en) * | 2015-06-15 | 2015-10-07 | 中国科学院半导体研究所 | RFID Temperature Tags |
| CN105050383A (en) * | 2013-03-19 | 2015-11-11 | 青岛裕洋电子有限公司 | Controller apparatus for controlling cultivation environment of cultivation crop in plant factory and method therefor |
| CN105115627A (en) * | 2015-09-18 | 2015-12-02 | 成都比善科技开发有限公司 | Wireless temperature measurement early warning system |
| CN105160383A (en) * | 2015-09-02 | 2015-12-16 | 华中科技大学 | Safety-state-monitoring early-warning type active electronic tag and method for detecting to-be-detected object by using the same |
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| CN105190649A (en) * | 2013-02-07 | 2015-12-23 | 新港数码科技澳大利亚有限公司 | Improvements in RFID tracking |
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| CN107290070A (en) * | 2017-08-04 | 2017-10-24 | 河北为信电子科技股份有限公司 | An intelligent energy-saving efficient wireless temperature measurement method and its device |
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Application publication date: 20120912 |