CN101819642B - Method and device for temperature control of RFID read/write module - Google Patents
Method and device for temperature control of RFID read/write module Download PDFInfo
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- CN101819642B CN101819642B CN201010136370XA CN201010136370A CN101819642B CN 101819642 B CN101819642 B CN 101819642B CN 201010136370X A CN201010136370X A CN 201010136370XA CN 201010136370 A CN201010136370 A CN 201010136370A CN 101819642 B CN101819642 B CN 101819642B
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Abstract
The invention relates to a method and a device for the temperature control of an RFID read/write module. The device is used for controlling the working temperature of an RFID read/write module, and comprises an intelligent power supply module, a micro processing module and a temperature sensor, wherein the intelligent power supply module is connected to the RFID read/write module by a power cord and a ground wire; the power cord is provided with a current sensor, and a voltage sensor is arranged between the power cord and the ground wire; the temperature sensor is used for detecting the working temperature value of the RFID read/write module; and the micro processing module comprehensively judges the current temperature state of the RFID read/write module based on the temperature, and control the intelligent power supply module to change the input voltage of the RFID read/write module. By detecting the working temperature and the current intensity of the RFID read/write module in real time and adjusting the working voltage control temperature of the RFID read/write module in real time, the invention ensures that the RFID read/write module is in the high-efficiency operating state all the time, thereby widening the application of the RFID read/write module.
Description
Technical field
The present invention relates to the RFID module for reading and writing, especially relate to the temperature control equipment and the method for RFID module for reading and writing.
Background technology
(Radio Frequency Identification, RFID) module for reading and writing can be used for reading the data on the rfid card to RF identification, and gives corresponding application and handle.The watt level of RFID module for reading and writing and reading/writing distance distance are proportional, the RFID module for reading and writing are remained on high power as far as possible, can effectively improve the recognition performance of RFID module for reading and writing.
But high-frequency work will directly influence the working temperature of RFID module for reading and writing; If there are not effective temperature control means,, can only stipulate the operating power of RFID module for reading and writing in order to protect the RFID module for reading and writing life-span; Control the rfid card of its read-write closer distance, therefore limited the use of RFID module for reading and writing.
Summary of the invention
The technical matters that the present invention will solve is, to the above-mentioned defective of prior art, a kind of RFID module for reading and writing temperature control equipment and the method that can effectively control RFID module for reading and writing working temperature is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Construct a kind of RFID module for reading and writing temperature control equipment; Be used to control the working temperature of RFID module for reading and writing; It comprises the intelligent power supply module that is used for providing power supply to said RFID module for reading and writing, and said intelligent power supply module is connected to said RFID module for reading and writing through power lead and ground wire; Also comprise micro treatment module;
Said power lead is provided with current sensor, and said power lead and ground wire time are provided with voltage sensor; Also comprise the temperature sensor that is used to detect said RFID module for reading and writing working temperature;
Said voltage sensor, current sensor and temperature sensor all are connected to said micro treatment module, and detected magnitude of voltage, current value and temperature value are sent to said micro treatment module;
Said micro treatment module is used for controlling said intelligent power supply module and to said RFID module for reading and writing suitable voltage being provided according to the said temperature integrated residing temperature grade of current said RFID module for reading and writing of judging:
Said micro treatment module comprises:
Signal acquiring unit is used to obtain magnitude of voltage, current value and the temperature value that said voltage sensor, current sensor and temperature sensor send;
Logical processing unit is used for said temperature value and first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are compared, and produces control signal and is sent to the control output unit; Wherein, when said temperature value is equal to or less than said first predetermined temperature, output operate as normal signal; When said temperature value is between said first predetermined temperature and said second predetermined temperature; Output steady operation signal, when said temperature value is between said second predetermined temperature and said the 3rd predetermined temperature, output vigilance task signal; When said temperature value is between said the 3rd predetermined temperature and said the 4th predetermined temperature, the output abnormality working signal;
Said first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are set according to RFID module for reading and writing actual work temperature situation;
The control output unit; Be used to receive said control signal, when said control signal is the operate as normal signal, control the said intelligent power supply module said magnitude of voltage that raises; When said control signal is the steady operation signal; Control said intelligent power supply module and keep current magnitude of voltage, when said control signal is the vigilance task signal, controls said intelligent power supply module and reduce said magnitude of voltage and current value; When said control signal is the abnormal work signal, control the power supply of the said RFID module for reading and writing of said intelligent power supply module shuts down;
Said temperature sensor is embedded in the said RFID module for reading and writing, measures the working temperature value of said RFID module for reading and writing in real time.
The present invention also provides a kind of RFID module for reading and writing temperature-controlled process, wherein, may further comprise the steps:
A, the temperature value when detecting input voltage value, current value and the work of RFID module for reading and writing in real time;
B, produce control signal in real time according to said temperature value and current value;
C, adjust said magnitude of voltage, guarantee that said RFID module for reading and writing is operated in normal temperature according to said control signal;
Among the said step B,
Said temperature value and first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are compared, produce control signal and be sent to the control output unit; Wherein,
When said temperature value is equal to or less than said first predetermined temperature, output operate as normal signal;
When said temperature value is between said first predetermined temperature and said second predetermined temperature, output steady operation signal;
When said temperature value is between said second predetermined temperature and said the 3rd predetermined temperature, output vigilance task signal;
When said temperature value is between said the 3rd predetermined temperature and said the 4th predetermined temperature, the output abnormality working signal;
Said first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are set according to RFID module for reading and writing actual work temperature situation;
Among the said step C,
When said control signal is the operate as normal signal, control the said intelligent power supply module said magnitude of voltage that raises;
When said control signal is the steady operation signal, controls said intelligent power supply module and keep current magnitude of voltage;
When said control signal is the vigilance task signal, controls said intelligent power supply module and reduce said magnitude of voltage and current value;
When said control signal is the abnormal work signal, control the power supply of the said RFID module for reading and writing of said intelligent power supply module shuts down;
Among the said step B, said control signal is a voltage signal;
Among the said step C, said intelligent power supply module is directly exported the pairing voltage of said voltage signal to said RFID module for reading and writing.
RFID module for reading and writing temperature-controlled process of the present invention and device are through detect the working temperature and the size of current of RFID module for reading and writing in real time; Its WV control temperature of real-time regulated; Guarantee that it can be in the efficient operation state all the time; When carrying out remote rfid card read-write operation, do not worry that it can damage because of being in the abnormal work temperature yet, make that the application of RFID module for reading and writing is more extensive.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the RFID module for reading and writing temperature control equipment theory diagram of the embodiment of the invention;
Fig. 2 is the RFID module for reading and writing temperature-controlled process process flow diagram of the embodiment of the invention.
Embodiment
Below in conjunction with diagram, the preferred embodiments of the present invention are described in detail.
The RFID module for reading and writing temperature control equipment principle of preferred embodiment of the present invention is as shown in Figure 1; It is used to control RF identification (Radio Frequency Identification; RFID) working temperature of module for reading and writing (being designated hereinafter simply as the RFID module for reading and writing); Comprise the intelligent power supply module that is used for providing power supply, also comprise micro treatment module to the RFID module for reading and writing.The intelligent power supply module is connected to the RFID module for reading and writing through power lead and ground wire, and power lead is provided with current sensor I, and power lead and ground wire time are provided with voltage sensor V.Also comprise the temperature sensor T that is used to detect RFID module for reading and writing working temperature value.Voltage sensor V, current sensor I and temperature sensor T all are connected to micro treatment module, and detected magnitude of voltage, current value and temperature value are sent to micro treatment module.Micro treatment module is comprehensively judged the residing temperature grade of current RFID module for reading and writing according to temperature value, and control intelligent power supply module provides suitable voltage to the RFID module for reading and writing.
Preferably, micro treatment module comprises signal acquiring unit, Logical processing unit and control output unit.Wherein, signal acquiring unit is used to obtain magnitude of voltage, current value and the temperature value that voltage sensor, current sensor and temperature sensor send.Logical processing unit is used for temperature value and first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are compared, and produces control signal and is sent to the control output unit; When temperature value is equal to or less than first predetermined temperature; Output operate as normal signal, when temperature value is between first predetermined temperature and second predetermined temperature, output steady operation signal; When temperature value is between second predetermined temperature and the 3rd predetermined temperature; Output vigilance task signal, when temperature value is between the 3rd predetermined temperature and the 4th predetermined temperature, the output abnormality working signal.
The control output unit is used to receive control signal, when control signal is the operate as normal signal, and control intelligent power supply module boosted voltage value; When control signal is the steady operation signal; Control intelligent power supply module keeps current magnitude of voltage, and when control signal was the vigilance task signal, control intelligent power supply module reduced magnitude of voltage and current value; When control signal is the abnormal work signal, the power supply of control intelligent power supply module shuts down RFID module for reading and writing.
Wherein, first predetermined temperature＜second predetermined temperature＜the 3rd predetermined temperature＜the 4th predetermined temperature.Four temperature threshold occurrences can be set according to RFID module for reading and writing actual work temperature situation, as to set first predetermined temperature be 80 degree, and when being lower than the work of this temperature, the RFID module for reading and writing can normally read rfid card, and has certain intensification space.The magnitude of voltage that the RFID module for reading and writing that can suitably raise is at this moment imported makes it remain on work under this temperature section of second predetermined temperature to the, three predetermined temperatures, to read the rfid card of farther distance, expands its usable range.
Second predetermined temperature can be set at 100 degree; When the working temperature value of RFID module for reading and writing is between 80 degree and 100 degree, represent that this RFID module for reading and writing is in stable duty, can not break down; But do not need its magnitude of voltage that further raises yet, keep stable and get final product.
Along with RFID module for reading and writing working time lengthening, perhaps read after the rfid card of farther distance, its working temperature value raises, and has surpassed 100 degree; But still be lower than the 3rd predetermined temperature, like 120 degree, though can not break down this moment; But exceeded the safe temperature scope, be in the warning temperature section, need adjust its input voltage; Reduce its input voltage,, it is fallen within the normal range to reduce the temperature value of its work.
If the working temperature value of RFID module for reading and writing further is increased to more than the 3rd predetermined temperature; Even when reaching the 4th predetermined temperature, be in the abnormal temperature section, need reduce very soon its input voltage; The reduction amplitude should reduce its working temperature value greater than being in the amplitude of warning during temperature section very soon.
Preferably, temperature sensor is embedded in the RFID module for reading and writing, the working temperature value of real-time measure R FID module for reading and writing is so that read the working temperature value of RFID module for reading and writing more accurately.
According to the RFID module for reading and writing temperature control equipment of above embodiment, the present invention also provides a kind of RFID module for reading and writing temperature-controlled process, and its process flow diagram is as shown in Figure 2, may further comprise the steps:
S10, the temperature value when detecting input voltage value, current value and the work of RFID module for reading and writing in real time;
S20, produce control signal in real time according to temperature value and current value;
S30, according to control signal adjustment magnitude of voltage, guarantee that the RFID module for reading and writing is operated in normal temperature.
Preferably, in step S20, temperature value and first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are compared, produce control signal and be sent to the control output unit; Comprising following steps,
S21, when temperature value is equal to or less than first predetermined temperature, output operate as normal signal;
S22, when temperature value is between first predetermined temperature and second predetermined temperature, output steady operation signal;
S23, when temperature value is between second predetermined temperature and the 3rd predetermined temperature, output vigilance task signal;
S24, when temperature value is between the 3rd predetermined temperature and the 4th predetermined temperature, the output abnormality working signal.
Preferably, among the step S30, when control signal is the operate as normal signal, control intelligent power supply module boosted voltage value; When control signal was the steady operation signal, control intelligent power supply module kept current magnitude of voltage; When control signal was the vigilance task signal, control intelligent power supply module reduced magnitude of voltage and current value; When control signal is the abnormal work signal, the power supply of control intelligent power supply module shuts down RFID module for reading and writing.
Wherein, control signal preferably adopts voltage signal, and the intelligent power supply module is directly exported the pairing voltage of this voltage signal to the RFID module for reading and writing.
RFID module for reading and writing temperature-controlled process of the present invention and device are through detect the working temperature and the size of current of RFID module for reading and writing in real time; Its WV control temperature of real-time regulated; Guarantee that it can be in the efficient operation state all the time; When carrying out remote rfid card read-write operation, do not worry that it can damage because of being in the abnormal work temperature yet, make that the application of RFID module for reading and writing is more extensive.
Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of accompanying claims of the present invention according to above-mentioned explanation.
Claims (2)
1. RFID module for reading and writing temperature control equipment; Be used to control the working temperature of RFID module for reading and writing; It is characterized in that; Comprise the intelligent power supply module that is used for providing power supply to said RFID module for reading and writing, said intelligent power supply module is connected to said RFID module for reading and writing through power lead and ground wire; Also comprise micro treatment module;
Said power lead is provided with current sensor, is provided with voltage sensor between said power lead and the ground wire; Also comprise the temperature sensor that is used to detect said RFID module for reading and writing working temperature;
Said voltage sensor, current sensor and temperature sensor all are connected to said micro treatment module, and detected magnitude of voltage, current value and temperature value are sent to said micro treatment module;
Said micro treatment module is used for controlling the input voltage that said intelligent power supply module changes said RFID module for reading and writing according to the said temperature integrated residing state of temperature of current said RFID module for reading and writing of judging;
Said micro treatment module comprises:
Signal acquiring unit is used to obtain magnitude of voltage, current value and the temperature value that said voltage sensor, current sensor and temperature sensor send;
Logical processing unit is used for said temperature value and first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are compared, and produces control signal and is sent to the control output unit;
Wherein, when said temperature value is equal to or less than said first predetermined temperature, output operate as normal signal; When said temperature value is between said first predetermined temperature and said second predetermined temperature; Output steady operation signal, when said temperature value is between said second predetermined temperature and said the 3rd predetermined temperature, output vigilance task signal; When said temperature value is between said the 3rd predetermined temperature and said the 4th predetermined temperature, the output abnormality working signal;
Said first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are set according to RFID module for reading and writing actual work temperature situation;
The control output unit; Be used to receive said control signal, when said control signal is the operate as normal signal, control the said intelligent power supply module said magnitude of voltage that raises; When said control signal is the steady operation signal; Control said intelligent power supply module and keep current magnitude of voltage, when said control signal is the vigilance task signal, controls said intelligent power supply module and reduce said magnitude of voltage and current value; When said control signal is the abnormal work signal, control the power supply of the said RFID module for reading and writing of said intelligent power supply module shuts down;
Said temperature sensor is embedded in the said RFID module for reading and writing, measures the working temperature value of said RFID module for reading and writing in real time.
2. a RFID module for reading and writing temperature-controlled process is characterized in that, may further comprise the steps:
A, the temperature value when detecting input voltage value, current value and the work of RFID module for reading and writing in real time;
B, produce control signal in real time according to said temperature value and current value;
C, adjust said magnitude of voltage, guarantee that said RFID module for reading and writing is operated in normal temperature according to said control signal;
Among the said step B,
Said temperature value and first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are compared, produce control signal and be sent to the control output unit; Wherein,
When said temperature value is equal to or less than said first predetermined temperature, output operate as normal signal;
When said temperature value is between said first predetermined temperature and said second predetermined temperature, output steady operation signal;
When said temperature value is between said second predetermined temperature and said the 3rd predetermined temperature, output vigilance task signal;
When said temperature value is between said the 3rd predetermined temperature and said the 4th predetermined temperature, the output abnormality working signal;
Said first predetermined temperature, second predetermined temperature, the 3rd predetermined temperature and the 4th predetermined temperature are set according to RFID module for reading and writing actual work temperature situation;
Among the said step C,
When said control signal is the operate as normal signal, control the said intelligent power supply module said magnitude of voltage that raises;
When said control signal is the steady operation signal, controls said intelligent power supply module and keep current magnitude of voltage;
When said control signal is the vigilance task signal, controls said intelligent power supply module and reduce said magnitude of voltage and current value;
When said control signal is the abnormal work signal, control the power supply of the said RFID module for reading and writing of said intelligent power supply module shuts down;
Among the said step B, said control signal is a voltage signal;
Among the said step C, said intelligent power supply module is directly exported the pairing voltage of said voltage signal to said RFID module for reading and writing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010136370XA CN101819642B (en) | 2010-03-25 | 2010-03-25 | Method and device for temperature control of RFID read/write module |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010136370XA CN101819642B (en) | 2010-03-25 | 2010-03-25 | Method and device for temperature control of RFID read/write module |
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| Publication Number | Publication Date |
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| CN101819642A CN101819642A (en) | 2010-09-01 |
| CN101819642B true CN101819642B (en) | 2012-02-22 |
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| CN201010136370XA Expired - Fee Related CN101819642B (en) | 2010-03-25 | 2010-03-25 | Method and device for temperature control of RFID read/write module |
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| CN104460813B (en) * | 2014-11-12 | 2016-03-16 | 广州中大微电子有限公司 | A kind of method being suitable for the overheat protector of RFID reader |
| CN111860010B (en) * | 2020-06-30 | 2021-09-17 | 深圳市成为信息技术有限公司 | Control method and storage medium of UHF hand-held terminal |
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| US7782586B2 (en) * | 2007-08-22 | 2010-08-24 | Symbol Technologies, Inc. | Thermal management within mobile RFID readers through the application of temperature governed variable non-emissive intervals |
| CN201289040Y (en) * | 2008-10-13 | 2009-08-12 | 定达科技股份有限公司 | Temperature controlled device of LED lamp |
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