CN202433039U - Environmental parameter measuring device based on RFID (radio frequency identification devices) - Google Patents
Environmental parameter measuring device based on RFID (radio frequency identification devices) Download PDFInfo
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- CN202433039U CN202433039U CN2012200037587U CN201220003758U CN202433039U CN 202433039 U CN202433039 U CN 202433039U CN 2012200037587 U CN2012200037587 U CN 2012200037587U CN 201220003758 U CN201220003758 U CN 201220003758U CN 202433039 U CN202433039 U CN 202433039U
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Abstract
The utility model discloses an environmental parameter measuring device based on RFID (radio frequency identification devices). The environmental parameter measuring device based on the RFID comprises wireless environmental parameter sensing modules, readers and an upper computer system. Each wireless environmental parameter sensing module comprises sensors and a radio frequency card. The sensors are used for detecting the environmental parameters, and the environmental parameters detected and output by the sensors are emitted and output by the radio frequency card in a radio frequency signal manner. The radio frequency cards are linked with the readers in a wireless manner, and the readers receive the radio frequency signals emitted by the radio frequency card, convert the signals and then transmit the converted signals to the upper computer system. Since the RFID technology is applied to the humidity and temperature detecting process inside a warehouse and is combined with the special design for the environmental parameter measuring device which utilizes temperature sensors and humidity sensors commonly for large-scale grain warehouses and equipment warehouses, the temperature and the humidity of the warehouses can be automatically and well detected, the time for detecting the environmental parameters of the warehouses is greatly shortened, and a great deal of labor power and material resources are saved.
Description
Technical field
The utility model belongs to the environment measuring technical field, specifically, relates to a kind of environmental parameter measurement mechanism that is used for the testing environment temperature and humidity.
Background technology
In storage and the daily management process, one of main contents that detect supervision are that temperature, the humidity to environment of living in is carried out in good time or monitoring in real time in modern times.
At present; Dual mode is mainly adopted in detection supervision for temperature and humidity: first kind is artificial selective examination mode; Several exactly monitoring personnel hold a detector that is similar to glass tubular respectively and spot-check to each corner in warehouse, and manual record detects data.The non-constant of ageing and integrality of this detection mode, and labour intensity is big, and testing result receives artificial affecting bigger, obviously can not satisfy the demand of modernized warehousing management.Second kind is automatic monitoring mode; This is the improvement to preceding a kind of mode; The method that adopts is to arrange the Temperature Humidity Sensor of right quantity in the appropriate location of spare parts warehouse; Each sensor is connected on instrument or the digitizer by a cable, and then realizes robotization detection and supervision task.Under this working method, the staff must lay a large amount of signal transmission cables in inside, warehouse, and is as fine as a spider's web; After taking grain out of a granary to sun it at every turn; All need rearrange, for bulk storage plant, increase many labor capacity undoubtedly these cables; Therefore, neither a kind of ideal environment monitoring method.
Summary of the invention
The purpose of the utility model is to provide a kind of environmental parameter measurement mechanism based on the RFID technology; Solved loaded down with trivial details installation work in traditional automatic monitoring mode; On the basis of satisfying the requirement of enterprise's basic function demand and product quality; Improve the detection efficiency of environmental parameter, reduced operating cost.
For solving the problems of the technologies described above, the utility model adopts following technical scheme to be achieved:
A kind of environmental parameter measurement mechanism based on RFID comprises environmental parameter wireless sensing module, reader and host computer system; In said environmental parameter wireless sensing module, include sensor that is used for the testing environment parameter and the radio-frequency card that the environmental parameter of sensor output is exported with the form emission of radiofrequency signal; Said radio-frequency card and reader are set up wireless link, the radiofrequency signal of sending through reader received RF card, and carry out transferring to after the conversion of signals described host computer system.
Further, in said environmental parameter wireless sensing module, also include processor, be connected between described sensor and the radio-frequency card.
Preferably, said sensor is a Temperature Humidity Sensor, gathers the temperature and humidity parameter of environment, and passes through I
2C bus transfer to described processor.
Preferably, said processor preferably connects radio-frequency card, transmission environment parameter through spi bus.
Further again, in said environmental parameter wireless sensing module, also be provided with the battery that is used to sensor, processor and radio-frequency card power supply.
Further again, said environmental parameter wireless sensing module can be provided with a plurality of, and each environmental parameter wireless sensing module all can be set up wireless communication link with one or more reader.
For the data communication mode of reader and host computer system, preferably adopt following three kinds of design proposals:
The first is connected communication through RS232 or RS485 universal serial bus with the host computer system with said reader;
It two is; Be connected photoelectric commutator at said reader respectively with host computer system both sides; After electric signal through reader output converts light signal into via the photoelectric commutator that is connected reader one side; Be transmitted through the fiber to the photoelectric commutator that is connected host computer system one side, and then restore electric signal and export the host computer system to;
It three is that said reader transfers to the host computer system with the environmental parameter that collects with the wireless data transmission mode.
Further; In order to realize the long-time preservation of environmental parameter; Said host computer system is connected communication through netting twine with database server, the environmental parameter that collects periodically is kept in the database server, transfers, askes and look into to make things convenient for the monitoring personnel.
Compared with prior art; The advantage and the good effect of the utility model are: the utility model is applied to the RFID technology in the inner humiture testing process in warehouse; The temperature of generally using in conjunction with present large granary, equipment depot (ED), the specialized designs that humidity sensor carries out the environmental parameter measurement mechanism; Not only can accomplish the task of automatic detection warehouse temperature and humidity well; And shortened detection time of warehouse environment parameter greatly, and practiced thrift great amount of manpower and material resources, be a kind of low cost, high safety, high stable operation, high efficiency new measurement.
After the detailed description in conjunction with advantages the utility model embodiment, other characteristics of the utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the entire system Organization Chart based on RFID environmental parameter measurement mechanism that the utility model proposes;
Fig. 2 is the schematic block circuit diagram of a kind of embodiment of environmental parameter wireless sensing module among Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done explanation in further detail.
The utility model combines the actual demand of modern silo, equipment depot (ED), uses ripe at present RFID technology, has designed a kind of environmental parameter measurement mechanism based on the RFID technology, for the automatic monitoring of warehouse environment provides a kind of fairly perfect solution.
RFID is a REID, is a kind of automatic identification technology that utilizes radio frequency band to realize the noncontact bidirectional data communication.Basic rfid system comprises reader and radio-frequency card (transponder) two parts.Reader can be a read apparatus, also can be read-write equipment, the element (for example telefault or antenna etc.) that comprises radio-frequency module (transmitting and receiving), control module usually and be coupled with radio-frequency card.In addition, on reader, also should dispose the communication interface that can be connected, send the data that it was obtained to peripherals, for example host computer etc. with convenient with external unit.Radio-frequency card is placed on the object to be identified, is the real data carrier of rfid system, is made up of coupling element and microelectronic chip usually.Data adjustment mode according to radio-frequency card can be divided into active and two kinds of rfid systems of passive type at present.The active rfid system is an active system, and promptly radio-frequency card utilizes the RF energy of self initiatively to send data to reader, and modulation system can be amplitude modulation, frequency modulation or phase modulation.The passive type rfid system is a passive system; Utilize the electromagnetic wave of read write line emission energy to be provided for radio-frequency card, in light weight, volume is little, the life-span is long, low price, but transmitting range is limited; Generally have only tens centimetres, and need read write line to have bigger emissive power.
The utility model in the inner environmental parameter testing process in warehouse, has designed a kind of environmental parameter measurement mechanism with the active RFID technical application, has realized the automatic monitoring function of warehouse environment.Come to set forth in detail the concrete establishment structure and the principle of work thereof of said environmental parameter measurement mechanism below through a concrete embodiment.
Embodiment one, and referring to shown in Figure 1, the environmental parameter measurement mechanism of present embodiment mainly is made up of environmental parameter wireless sensing module 1, reader 2 and host computer system 5 three parts.Wherein, In environmental parameter wireless sensing module 1, be provided with the radio-frequency card that is used to detect the sensor of warehouse environment parameter and is used for constituting the RFID wireless transmitting system with reader 2; Can the environmental parameter of sensor output be modulated into radio frequency signal through said radio-frequency card; Be transmitted to reader 2 and receive, and then be connected communication with host computer system 5, accomplish uploading and the remote monitoring task of environmental parameter through reader 2.
Said environmental parameter wireless sensing module 1 can be provided with a plurality of according to the actual detected needs in warehouse simultaneously, is laid in the article appropriate position on every side that needs detection respectively.One or more reader 2 can be installed in top, surroundings wall or other suitable positions in each warehouse; Specifically can carry out reasonable disposition, the radiofrequency signal of sending with accurate reception different radio frequency card according to the wireless transmission distance between radio-frequency card and the reader 2.Each reader 2 is connected with host computer system 5 (can adopts the wired connection mode; Also can adopt wireless transmission method); Detect the supervision network to constitute; Thus one, the monitoring personnel only need in the pulpit can to accomplish task is looked in the monitoring and the inquiry of warehouse environment through operation host computer system.
Carry out data transmission for ease between sensor and the radio-frequency card; In said environmental parameter wireless sensing module 1, also further be provided with processor; With the single-chip microcomputer is that example describes, and is connected between sensor and the radio-frequency card, accomplishes the conversion and the telecommunication management task of data layout.
In the present embodiment, said sensor is to be used for the Temperature Humidity Sensor that the testing environment temperature and humidity changes, can be with the form output of the temperature and humidity parameter that collects with simulating signal or digital signal.In order to practice thrift the interface resource of single-chip microcomputer, the preferred employing disposed I
2The Temperature Humidity Sensor of C EBI carries out the global design of said environmental parameter wireless sensing module 1, referring to shown in Figure 2.EBI SDA, the SCL of said Temperature Humidity Sensor are passed through I
2The C bus is connected to single-chip microcomputer, and the temperature and humidity Parameters Transformation that collects is become I
2C bus data form is sent to single-chip microcomputer and handles and keep in.
In order to satisfy in the environmental parameter wireless sensing module 1 each power requirement with electric loading; In said environmental parameter wireless sensing module 1, also be provided with battery; The lithium battery that preferred employing output amplitude is 3.3V is as power supply; The feeder ear VCC that connects Temperature Humidity Sensor, single-chip microcomputer and radio-frequency card respectively is for Temperature Humidity Sensor, single-chip microcomputer and radio-frequency card provide WV.
In order to improve stability of data transmission and reliability between Temperature Humidity Sensor and the single-chip microcomputer, at the I that connects Temperature Humidity Sensor and single-chip microcomputer
2Can also further connect pull-up circuit on the C bus, for example connect the voltage output end of lithium battery through pull-up resistor R, in case stop ring border parameter in the circuit transmission course because of mistake appears in the influence that receives undesired signal, improve the antijamming capability that signal transmits.
Between the feeder ear VCC of said Temperature Humidity Sensor and earth terminal GND, capacitor C can also further be connected, to play the effect of the filtering of decoupling.
Carry out the two-way communication of data for the preferred spi bus that adopts between single-chip microcomputer and the radio-frequency card, as shown in Figure 2.After radio-frequency card receives the order that single-chip microcomputer sends through the SPI interface, select to get into emission or receive data pattern, between reader and radio-frequency card, carry out radio communication.After radio-frequency card received or launched the active data bag, DR put height with its data ready pin, after the DR pin that single-chip microcomputer detects radio-frequency card is high level, radio-frequency card was changed over to the standby mode of low-power consumption.
Between said radio-frequency card and reader, adopt semiduplex data communication mode; " the carrier wave detection protocol " intercepted before the transmission adopted in data communication; First detected carrier information and matching addresses information before promptly receiving have only when carrier wave exists and sends address right (high level), just to receive packet.Also to forward receiving mode earlier to before the transmission data and carry out intercepting of carrier information,, can change emission mode over to and send data as long as the frequency channel of transmission is unoccupied.Use this data communication protocol can realize simple and effective anticollision.Adopt active rfid system design environment parameter measuring apparatus; Information real-time property is good, data capacity is big, operating distance is far away; And have the integrated level height, be easy to debugging, low-power consumption, low cost and be prone to advantage such as expansion, thereby can be widely used in high or data and need the occasion that read and write repeatedly the real-time property requirement.
For adopting wired and wireless several data transmission mode to communicate between reader 2 and the host computer system 5, as shown in Figure 1, describe respectively below.
The first adopts RS232 or RS485 universal serial bus to be connected between reader 2 and the host computer system 5, utilizes the serial communication mode to realize the data interaction between the two.
It two is to adopt the cable data transmission mode based on optical fiber.At this moment, need photoelectric conversion module 3,4 be installed respectively in reader 2 one sides and host computer system 5 one sides.Need be uploaded to the environmental parameter sampled data of host computer system 5 for reader 2; At first carry out electric signal after the conversion process of light signal through the photoelectric conversion module 3 that is connected with reader 2; Be transmitted through the fiber to the photoelectric conversion module 4 of host computer system 5 one sides; Carry out light signal after the conversion process of electric signal via photoelectric conversion module 4, transfer to host computer system 5 and analyze, show.In host computer system 5, install and the running environment monitoring of software, the monitoring personnel accomplish the detection and the query of warehouse temperature and humidity through the operation host computer.Can transfer in the database server 6 that is connected with said host computer system 5 through netting twine for detected environmental parameter and to preserve, perhaps import in other storage mediums, to make things convenient for the monitoring personnel to transfer at any time and inquiry is looked into.Otherwise; After the control command of sending for host computer system 5 (for example require reader 2 to upload the steering order of environmental parameter or regularly upload the system configuration informations such as timing of sampled data) then at first converts light signal to by the photoelectric conversion module 4 that is installed in host computer system 5 one sides; Be transmitted through the fiber to the photoelectric conversion module 3 that is connected with reader 2; And then restore original electric signal; Export reader 2 to, with the control command of response host computer system 5.
It three is, based on the wireless data transmission mode.At this moment, need RF receiving and transmission module be installed respectively, setting up the wireless communication link between reader 2 and the host computer system 5, and then realize the radio communication function of data in reader 2 one sides and host computer system 5 one sides.
The environmental parameter measurement mechanism of present embodiment has following remarkable advantage:
(1) wireless transmission in the warehouse has solved araneose in the past wiring problem, the special demand that adapts to emergent networking;
(2) data transmission can adopt wired mode, wireless mode or wired, wireless hybrid mode outside the warehouse, and utilization flexibly;
(3) radio-frequency card can continuous working 6～8 years, and power consumption is extremely low;
(4) impermeability of equipment is strong, nontoxic, pollution-free in the warehouse;
(5) use host computer system carries out the auto-real-time monitoring of environment in the warehouse, possesses the function of the inquiry of historical data and safety storing simultaneously;
(6) cost of taking grain out of a granary to sun it is low, not fragile, for enterprise cuts down expenses;
(7) easy to maintenance, can be under system's service condition the removable parts accessory, do not receive environmental restraint.
Certainly; Above-mentioned explanation is not to be the restriction to the utility model; The utility model also be not limited in above-mentioned for example, variation, remodeling, interpolation or replacement that those skilled in the art are made in the essential scope of the utility model also should belong to the protection domain of the utility model.
Claims (10)
1. the environmental parameter measurement mechanism based on RFID is characterized in that: comprise environmental parameter wireless sensing module, reader and host computer system; In said environmental parameter wireless sensing module, include sensor that is used for the testing environment parameter and the radio-frequency card that the environmental parameter of sensor output is exported with the form emission of radiofrequency signal; Said radio-frequency card and reader are set up wireless link, the radiofrequency signal of sending through reader received RF card, and carry out transferring to after the conversion of signals described host computer system.
2. the environmental parameter measurement mechanism based on RFID according to claim 1 is characterized in that: in said environmental parameter wireless sensing module, also include processor, be connected between described sensor and the radio-frequency card.
3. the environmental parameter measurement mechanism based on RFID according to claim 2 is characterized in that: said sensor is a Temperature Humidity Sensor, gathers the temperature and humidity parameter of environment, and passes through I
2C bus transfer to described processor.
4. the environmental parameter measurement mechanism based on RFID according to claim 2 is characterized in that: said processor connects radio-frequency card, transmission environment parameter through spi bus.
5. the environmental parameter measurement mechanism based on RFID according to claim 2 is characterized in that: in said environmental parameter wireless sensing module, also be provided with the battery that is used to sensor, processor and radio-frequency card power supply.
6. according to each described environmental parameter measurement mechanism in the claim 1 to 5 based on RFID; It is characterized in that: said environmental parameter wireless sensing module is provided with a plurality of, and each environmental parameter wireless sensing module is all set up wireless communication link with one or more reader.
7. according to each described environmental parameter measurement mechanism based on RFID in the claim 1 to 5, it is characterized in that: said reader is connected communication through RS232 or RS485 universal serial bus with the host computer system.
8. according to each described environmental parameter measurement mechanism in the claim 1 to 5 based on RFID; It is characterized in that: be connected with photoelectric commutator respectively at said reader and host computer system both sides; After electric signal through reader output converts light signal into via the photoelectric commutator that is connected reader one side; Be transmitted through the fiber to the photoelectric commutator that is connected host computer system one side, and then restore electric signal and export the host computer system to.
9. according to each described environmental parameter measurement mechanism based on RFID in the claim 1 to 5, it is characterized in that: said reader transfers to the host computer system with the environmental parameter that collects with the wireless data transmission mode.
10. according to each described environmental parameter measurement mechanism based on RFID in the claim 1 to 5, it is characterized in that: said host computer system is connected communication through netting twine with database server.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012200037587U CN202433039U (en) | 2012-01-06 | 2012-01-06 | Environmental parameter measuring device based on RFID (radio frequency identification devices) |
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| CN2012200037587U CN202433039U (en) | 2012-01-06 | 2012-01-06 | Environmental parameter measuring device based on RFID (radio frequency identification devices) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103925944A (en) * | 2014-04-11 | 2014-07-16 | 东南大学 | Airtight spraying room environment monitoring system based on passive wireless sensing technology |
| CN104009786A (en) * | 2013-02-27 | 2014-08-27 | 南京攀登信息技术有限公司 | Granary information transfer device based on wireless sensing network |
| CN107192412A (en) * | 2017-05-23 | 2017-09-22 | 合肥工业大学 | Thermal power plant environmental monitoring system based on RFID Yu LoRa technologies |
-
2012
- 2012-01-06 CN CN2012200037587U patent/CN202433039U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009786A (en) * | 2013-02-27 | 2014-08-27 | 南京攀登信息技术有限公司 | Granary information transfer device based on wireless sensing network |
| CN103925944A (en) * | 2014-04-11 | 2014-07-16 | 东南大学 | Airtight spraying room environment monitoring system based on passive wireless sensing technology |
| CN107192412A (en) * | 2017-05-23 | 2017-09-22 | 合肥工业大学 | Thermal power plant environmental monitoring system based on RFID Yu LoRa technologies |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120912 Termination date: 20130106 |