CN201159904Y

CN201159904Y - Ultrahigh frequency RFID and sensor network synthesis controller

Info

Publication number: CN201159904Y
Application number: CNU2008200739352U
Authority: CN
Inventors: 郝铭; 邴志刚; 任德华
Original assignee: TIANJIN XINMIN SCIENCE &TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: TIANJIN XINMIN SCIENCE &TECHNOLOGY DEVELOPMENT Co Ltd
Priority date: 2008-02-27
Filing date: 2008-02-27
Publication date: 2008-12-03
Anticipated expiration: 2018-02-27

Abstract

Disclosed is a synthesis controller of ultra-high frequency RFID and sensor network, which comprises a microprocessor, an ultra-high frequency RFID read-write module, a sensor network radio frequency communication module, an expanding Flash, an expanding RAM, an extendable I/O interface, a temperature and humidity sensor, a network communication module and a display module respectively connected with the microprocessor, and a power supply providing electrical source for the system as well as a management module. The network communication module selects the mode of Ethernet or RS485 bus to communicate with a control computer. The extendable I/O interface includes general input and output pins, an SPI interface, an I<2>C interface and a UART interface. The controller forms a hazardous chemical warehousing supervision system which integrates warehousing management and warehouse monitoring into one and comprehensively applies the RFID technique and sensor network technique. The recognition to targets such as personnel, goods and vehicles can be realized based on the RFID technique, and the intelligence of warehousing environment can be realized based on the sensor network technique, thereby meeting the requirements of distributed monitoring on environmental parameters such as temperature, humidity and ingredients and jointly providing the basic data for the hazardous chemical warehousing supervision system.

Description

Ultrahigh frequency RFID and sensor network general controller

Technical field

The utility model relates to a kind of general controller, particularly a kind of combining by RFID and sensor technology, the status informations such as temperature, humidity and illumination of article and environment around the perception are for systems such as warehousing management provide the ultrahigh frequency RFID and the sensor network general controller of basic data efficiently.

Background technology

The RFID technology is a kind of non-contacting automatic identification technology, and its ultimate principle is to utilize radiofrequency signal and space coupling (inductance or electromagnetic coupled) transport property, realizes being identified the automatic identification of object.

The groundwork process of rfid system is: read write line goes out the radiofrequency signal of certain frequency by antenna transmission; When the RFID label entered the read write line perform region, its antenna produced induction current, thereby the RFID label obtains that energy is activated and send out information such as self coding to read write line; Read write line receives the carrier signal from label, the signal that receives is carried out delivering to main frame behind the demodulation sign indicating number handle; Computer system is judged the legitimacy of this label according to logical operation, makes corresponding processing and control at different settings, sends command signal; The data demodulates part of RFID label demodulates data and delivers to steering logic from the radio-frequency pulse that receives, steering logic receives instruction and finishes storage, sends data or other operations.

Compare with traditional recognition method, the RFID technology need not direct contact, need not optical visible, need not manual intervention can finish the information input and handle, and swift and convenient to operate, thus be widely used in producing, logistics, traffic, transportation, medical treatment, false proof, mailbag tracking, equipment and needs such as asset management, waste management are collected and the application of deal with data.

Wireless sensor network (Wireless Sensor Networks, abbreviation WSNs) product that combines as calculating, communication and sensor three technology, be that a kind of brand-new information is obtained and treatment technology, become active research branch of computer science at present.It is implemented in the autonomous network that adopts wireless mode to transmit information between the intelligent sensing node by wireless device that will be highly integrated in conjunction with various sensors, can pass through the information Recognition environment of the various sensors collections of node, the area of the network coverage be monitored by network.

The RFID technology both can be used for realizing the Automatic Logos of target, indicated identity, kind of target etc.; Can carry out location, the tracking of target in conjunction with the rfid interrogator that is distributed in everywhere again, thereby provide data source for monitoring in real time.The SN node is equipped with required various kinds of sensors, can realize the ambient intelligence of danger product warehousing system, satisfies temperature, humidity, vibration, the one-tenth distributed monitoring demand of environmental information of storing in a warehouse of grading.

Therefore, the RFID electronic tag both can relatively independently be used, and also was to construct important element of SN and foundation stone; And SN can be regarded as the expansion of rfid system and replenishes, and can realize self-organizing network on the basis of mutual communication between the sensing node.

Summary of the invention

Technical problem to be solved in the utility model is, a kind of combining by RFID and sensor technology is provided, the status informations such as temperature, humidity and illumination of article and environment around the perception are for systems such as warehousing management provide the ultrahigh frequency RFID and the sensor network general controller of basic data efficiently.

The technical scheme that the utility model adopted is: a kind of ultrahigh frequency RFID and sensor network general controller, include microprocessor, the ultrahigh frequency RFID module for reading and writing that is connected with microprocessor respectively, sensor network radio-frequency communication module, extend out RAM, temperature, humidity sensor, network communication module, and power supply and administration module thereof that power supply is provided for system.

Also be provided with the Flash that extends out that is connected with microprocessor.

But also be provided with the expansion I/O interface that is connected with microprocessor.

Also be provided with the display module that is connected with microprocessor.

Described network communication module selects for use Ethernet or RS485 bus mode and control computer to communicate.

But described expansion I/O interface includes general input and output pin, SPI interface, I ²C interface, UART interface.

Ultrahigh frequency RFID of the present utility model and sensor network general controller constitute integrated use RFID technology and sensor network technique, and the danger product storage supervisory systems that unites two into one is monitored in warehousing management and warehouse.The RFID technology realizes identification of targets such as personnel, goods, vehicle, sensor network technique is realized the storage ambient intelligence, the grade demand of distributed monitoring of environmental parameter of satisfied temperature, humidity, one-tenth, RFID and sensor network technique provide basic data for hazardous chemical storage supervisory systems jointly.The utility model can provide new thinking and strong hardware supported for the informatization of hazardous chemical warehousing management, and can extend among the WMS of common kinds of goods.

Description of drawings

Fig. 1 is an one-piece construction block diagram of the present utility model;

Fig. 2 is a clock circuit schematic diagram in the utility model;

Fig. 3 is a microprocessor circuit schematic diagram in the utility model;

Fig. 4 is the circuit theory diagrams of sensor network radio-frequency communication module in the utility model;

Fig. 5 is the circuit theory diagrams that extend out Flash in the utility model;

Fig. 6 is the circuit theory diagrams that extend out RAM in the utility model;

Fig. 7 is radio frequency part and a RFID card reader interface circuit diagram in the utility model;

Fig. 8 is the SN interface circuit figure in the utility model;

Fig. 9 is the circuit theory diagrams of the expansion IO mouth in the utility model;

Figure 10 is the RS485/RS232 commutation circuit schematic diagram of the serial ports 1 in the utility model:

Figure 11 is the RS485/RS232 commutation circuit schematic diagram of the serial ports 2 in the utility model;

Figure 12 is a RS485 communicating circuit schematic diagram in the utility model;

Figure 13 is a RS232 communicating circuit schematic diagram in the utility model;

Figure 14 is a display interface circuit of the present utility model:

Figure 15 is a power circuit of the present utility model;

Figure 16 is the circuit theory diagrams that 3.3V of the present utility model changes 5V;

Figure 17 is the circuit theory diagrams that 3.3V of the present utility model changes 5V;

Figure 18 is the circuit theory diagrams that 5V of the present utility model changes 3.3V;

Wherein:

101: microprocessor 102: the ultrahigh frequency RFID module for reading and writing

103: sensor network radio-frequency communication module 104: extend out Flash

105: extend out RAM 106: power supply and administration module thereof

107: temperature, humidity sensor 108: but expansion I/O interface

109: network communication module 110: display module

Embodiment

Provide specific embodiment below in conjunction with accompanying drawing, further specify the utility model and how to realize.

As shown in Figure 1, ultrahigh frequency RFID of the present utility model and sensor network general controller, include microprocessor 101, respectively the ultrahigh frequency RFID module for reading and writing 102 that is connected with microprocessor 101, sensor network radio-frequency communication module 103, extend out Flash 104, extend out RAM 105, but temperature, humidity sensor 107 expansion I/Os connect 108, network communication module 109, display module 110, and power supply and administration module 106 thereof that power supply is provided for system.

Wherein:

Microprocessor 101:, mainly finish functions such as work coordination, discriminating data and algorithm realization to each module of equipment as the control core of entire equipment; The microprocessor 101 of present embodiment is as Fig. 2, shown in Figure 3, and including model is little process chip U1 of PIC18F.

Ultrahigh frequency RFID module for reading and writing 102: realize read-write to the ultrahigh frequency label; The ultrahigh frequency RFID module for reading and writing 102 of present embodiment, the model that adopts Shenzhen new strength telecom technology co., ltd to produce is the module for reading and writing of NFC-9501, include independently microprocessor NXP ARM7, have many labels literacy, but the per second identification label is not less than 20 pieces; Maximum read/write distance is 8/5m.

Fig. 7 is radio frequency part and a RFID card reader interface circuit diagram in the utility model; Fig. 8 is the SN interface circuit figure in the utility model;

Microprocessing unit 101 and ultrahigh frequency RFID module for reading and writing 102 constitute the structure of dual micro processor, the utility model adopts the dual micro processor structural reason to be because the read-write ultrahigh frequency electronic tag needs a large amount of microprocessor computings, realize comprising the ISO18000-6B agreement, anti-collision algorithm realization etc., can carry out other work or carry out other computings at the read-write ultrahigh frequency electronic tag simultaneously after adopting the dual micro processor structure; And after ultrahigh frequency RFID module for reading and writing 102 adopts independently microprocessor, if in that only it can be used as a separate equipment and uses to the occasion of label read-write.

And the microprocessor that the utility model is selected for use has programming (IAP) ability in application, can carry out online upgrading to embedded software when needed.

Sensor network radio-frequency communication module 103: realize with other ultrahigh frequency RFID and sensor network general controller, sensor child node between communicate by letter; As shown in Figure 4, sensor network radio-frequency communication module 103 includes radio frequency chip U18, and it is the chip of nRF905 that present embodiment is selected model for use, and frequency range is 433/868/915MHz, and communication speed is 100kbps, and transmission range is between 30～100m.

Extend out Flash 104: be used to store offline data, do not lose when guaranteeing the data accident power-off; Extend out Flash 104 as shown in Figure 5, include chip U7, U8, it is SST25VF016B that present embodiment is selected model for use.

Extend out RAM 105: select non-volatile ferroelectric memory for use, be used for the storing process data, or ephemeral data, guarantee to give previous state for change behind system's accident power-off; Extend out RAM 105 as shown in Figure 6, include chip U13, it is the chip of FM24CL16 that present embodiment is selected model for use.

Temperature, humidity sensor 107: constitute temperature, moisture measurement unit; Present embodiment is selected the SHT11 Temperature Humidity Sensor of Switzerland Sensirion company for use.

Standard configuration of the present utility model is temperature, humidity sensor 107, can satisfy the needs of general environment monitoring, if any special requirement as special gas, vibration etc., but can add by expansion I/O interface 108; Or increase the sensor assembly of response in the sensor child node.

But expansion I/O interface 108: comprise general input and output pin, SPI interface, I ²C interface, UART interface etc.; Shown in Figure 9 is the circuit theory diagrams of originally executing the expansion IO mouth of example.But can conveniently expand the various parts that possess these interfaces (as multiple sensors, required other kind rfid interrogators etc.) by expansion I/O interface 108.As Fig. 7, Fig. 9, Figure 10, Figure 11, expansion interface shown in Figure 14.

Network communication module 109: Figure 12, shown in Figure 13 can select for use Ethernet or RS485 bus mode and control computer to communicate according to field condition.

Display module 110: equipment running status prompting.Select the LCM12864I LCD MODULE of Qingyun Chuangxin Science ﹠ Tech Co Ltd, Beijing in the present embodiment for use.The interface circuit of display module 110 as shown in figure 14.

Power supply and administration module 106 thereof: for system provides the energy, the power supply of present embodiment and management circuit thereof are as shown in figure 15.

The circuit that 3.3V and 5V power supply are changed mutually in the present embodiment such as Figure 16, Figure 17, shown in Figure 180.

Claims

1. ultrahigh frequency RFID and sensor network general controller, it is characterized in that, include microprocessor (101), respectively the ultrahigh frequency RFID module for reading and writing (102) that is connected with microprocessor (101), sensor network radio-frequency communication module (103), extend out RAM (105), temperature, humidity sensor (107), network communication module (109), and power supply and administration module (106) thereof that power supply is provided for system.

2. ultrahigh frequency RFID according to claim 1 and sensor network general controller is characterized in that, also be provided be connected with microprocessor (101) extend out Flash (104).

3. ultrahigh frequency RFID according to claim 1 and sensor network general controller is characterized in that, also are provided with microprocessor (101) but the expansion I/O interface (108) that is connected.

4. ultrahigh frequency RFID according to claim 1 and sensor network general controller is characterized in that, also are provided with the display module (110) that is connected with microprocessor (101).

5. ultrahigh frequency RFID according to claim 1 and sensor network general controller is characterized in that, described network communication module (109) selects for use Ethernet or RS485 bus mode and control computer to communicate.

6. ultrahigh frequency RFID according to claim 3 and sensor network general controller is characterized in that, but described expansion I/O interface (108) includes general input and output pin, SPI interface, I2C interface, UART interface.