CN102253679A - Device for stabilizing radio frequency identification (RFID) signal for museum navigation - Google Patents

Abstract

The invention belongs to the field of radio frequency, and in particular discloses an intelligent visitor guiding system based on a radio frequency identification (RFID) technology. The invention discloses a method that constant temperature and humidity equipment is used for controlling the temperature and humidity in a communication space of an electronic tag and a reader for museum navigation so as to be positioned in a constant temperature and humidity environment to stabilize the influence on radio frequency signals. In the method, a popular intelligent temperature and humidity controller (power supply voltage is AC220V, and an active or passive power supply can be selected according to the requirement of a project site) is used for controlling the temperature and the humidity in a distance range which is required by the communication of the RFID reader and the electronic tag; and when the reader accesses an effective distance, the reader can stably exchange the signals with the electronic tag, communication is established, and the aim of accurate navigation is fulfilled.

Description

A kind of stable museum guiding device of RFID signal

Technical field

The invention belongs to the less radio-frequency field, especially based on the intelligent guide system of RFID technology, content is to utilize thermostatic constant wet equipment, control guide to visitors humiture in electronic tag and the reader communication space, to realize constant-temperature constant-humidity environment, stablize a kind of method of humiture to the radio-frequency transmissions effect of signals.

Background technology

RFID is the abbreviation of Radio Frequency Identification, i.e. radio-frequency (RF) identification.It is by the automatic recognition objective object of radiofrequency signal and obtain related data, and identification work need not manual intervention, can work in various rugged surroundings.The RFID technology can be discerned high-speed moving object and can discern a plurality of labels simultaneously, and is swift and convenient to operate, makes to realize that the museum objects intelligent management may become.The RFID technology is to utilize radiotelegraphy to set up communication between reader and electronic tag, reaches the purpose of information inquiry.In recent years, this technology maturation applies in the museum guiding, electronic tag is placed the collection place that needs explanation, visitor's handheld reader, when reader and label (being visitor and collection) are in the wireless signal scope, can set up communication, play corresponding guide to visitors information automatically, reach the function of intelligent guide to visitors.

The civilization in 5,000 years of China has been left our abundant history culture and cultural heritage for, has also just achieved big and small museum and the memorial museum in the various places that spread all over the country now.Though along with the high speed development of RFID technology, at present the transmitting range of wireless signal and angle all can be in harmonious proportion control, in actual applications, still have many deviations, signal occurs through regular meeting and accept the angle instability, the situation that receiving range is indefinite.Reason is to be subjected to electromagnetic interference (EMI), the influence of humiture and the obstruct of barrier etc.Anti-electromagnetic interference (EMI) can be solved by the electronic product self-technique, and barrier also can be resolved in actual engineering to the obstruct of signal, and uncontrollable is exactly the influence of humiture to transmitting and propagating.

Variation along with ambient temperature and humidity, make wireless signal strong or a little less than, thereby cause the communication distance between reader (being the Audio Guide that the visitor uses) and the electronic tag (being collection) very unstable, Shi Eryuan, the time and near, but the able person has also just begun communication to the collection place sometimes, but the able person has passed by and just begins communication sometimes.In order to guarantee to carry out correct communication in the correct time, the present invention controls ambient temperature and humidity by electronic thermostatic constant humidity equipment, allows radiofrequency signal propagate in a constant humiture environment and accept, to improve the stability that signal is accepted.

Summary of the invention

In recent years along with the development in RFID technology and digitizing museum produces, increasing application requirements wireless signal can be stablized, launch accurately and accept based on the intelligent guide system in the museum of RFID.Because radiowave can be absorbed by water when hyper band, accomplish what anhydrous laboratory conditions can't be accomplished in the real world applications Chinese style, and the present invention utilizes electronics humiture device control moisture temperature, for reader and electronic tag provide a stable humiture environment, thus the stability that improves the signal emission and accept.

The present invention can be suitable for the intelligent guide to visitors of museum, memorial museum widely as a kind of stable solution of museum's intelligence guide system wireless signal based on RFID, and various intelligent guide to visitors occasion based on RFID.The stability of radio frequency signal emission and acceptance be can effectively improve according to this method, thereby actual application value and the intelligent guide to visitors effect of RFID improved.And device of the present invention is very universal, and method and simple realizes that easily design and production cost are all very low, are suitable for a large amount of uses.

Description of drawings

A kind of stable museum guiding of Fig. 1 device synoptic diagram of RFID signal.RFID electronic tag and reader place in the electronic thermostatic humidistat range of control, and constant humiture can be stablized the emission and the acceptance of wireless signal.

Specific implementation

The present invention has obtained practical application at the Song Qingling's Former Residence memorial museum as an important use technology.The present invention is the museum's intelligence guide system based on the RFID technology, and constant humiture environment is provided, and has improved the emission of wireless signal and the stability that reads.The inventor has invented this solution from practical angle.Concrete implementation is as follows:

(power supply is AC220V to the intelligent temperature and humidity controller that this method utilization is popularized very much, and need to select active or passive according to the project site), humiture in RFID reader and the distance range that electronic tag need be communicated by letter is controlled, can be stable in the time of in reader enters coverage with the electronic tag switching signal, set up communication, reach the purpose of accurate guide to visitors.

About the humiture device, there is not unique selection, according to actual requirement of engineering,, then to select powerful device if metric space is big, if space requirement is little, consider to select miniature device to get final product in line with economic angle, in a word, decide on requirement of engineering.

The operating ambient temperature of RFID is generally-30 ℃～+ 65 ℃, humidity is less than 85%, consider that this equipment is applied in the museum, generally we set the constant temperature and humidity machine temperature at 20 ℃, humidity is 50%～65%, but different historical relics needs different humiture environment, just must be littler as metal and the needed humidity of porcelain, should require control moisture temperature according to the humiture of local historical relic Zang Guan.

The constant temperature and humidity opertaing device carries out constant temperature and humidity control to the RFID signal area before, require in the constant temperature and humidity opertaing device, to pre-set the best humiture that makes the transmission of RFID signal in conjunction with different museums.Regulate the humiture of RFID signal area, this zone humiture is reached make the best humiture of RFID signal transmission.

Claims (10)

1. a creation helps stablizing the method for RFID signal environment, it is characterized in that,

Thermostatic control device carries out thermostatic control to the RFID signal area;

Moisture control unit carries out humidity control to the RFID signal area.

2. creation as claimed in claim 1 helps stablizing the method for RFID signal environment, it is characterized in that, before thermostatic control device carries out thermostatic control to the RFID signal area, in thermostatic control device, pre-set the optimum temperature that makes the transmission of RFID signal.

3. creation as claimed in claim 1 helps stablizing the method for RFID signal environment, it is characterized in that, moisture control unit carries out humidity control to the RFID signal area before, sets in advance the optimum humidity that makes the transmission of RFID signal in moisture control unit.

4. creation as claimed in claim 2 helps stablizing the method for RFID signal environment, it is characterized in that, described thermostatic control device carries out thermostatic control to the RFID signal area and specifically comprises:

Regulate the temperature of RFID signal area, this regional temperature is reached make the best temperature of RFID signal transmission.

5. creation as claimed in claim 2 helps stablizing the method for RFID signal environment, it is characterized in that, described moisture control unit carries out humidity control to the RFID signal area and specifically comprises:

Regulate the humidity of RFID signal area, this zone humidity is reached make the best humidity of RFID signal transmission.

6. a creation helps stablizing the system of RFID signal environment, it is characterized in that, comprising:

Thermostatic control device is used for thermostatic control is carried out in the RFID signal area;

Moisture control unit is used for humidity control is carried out in the RFID signal area.

7. creation as claimed in claim 6 helps stablizing the system of RFID signal environment, it is characterized in that, described thermostatic control device also is used to set in advance the temperature that makes RFID signal transmission the best.

8. creation as claimed in claim 6 helps stablizing the system of RFID signal environment, it is characterized in that, described moisture control unit also is used to set in advance the temperature that makes RFID signal transmission the best.

9. creation as claimed in claim 6 helps stablizing the system of RFID signal environment, it is characterized in that, described thermostatic control device, specifically be used for thermostatic control is carried out in the RFID signal area, comprise: regulate the temperature of RFID signal area, this regional temperature is reached make the best temperature of RFID signal transmission.

10. creation as claimed in claim 6 helps stablizing the system of RFID signal environment, it is characterized in that, described moisture control unit, specifically be used for humidity control is carried out in the RFID signal area, comprise: regulate the humidity of RFID signal area, this regional temperature is reached make the best humidity of RFID signal transmission.

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