CN101739594A - Sensor virtual spreadsheet-based self-descriptive sensing tag system - Google Patents
Sensor virtual spreadsheet-based self-descriptive sensing tag system Download PDFInfo
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Abstract
The invention discloses a sensor virtual spreadsheet-based self-descriptive sensing tag system. The system consists of a sensing tag part and a reader-writer part, wherein the sensing tag stores sensor identification data, sensor characteristic data, sensor configuration parameters; all the acquired sensor data adopt a compact structure, and adopts a database table structure to perform description and address indexing; and the reader-writer part provides two templates, namely, one is a compact structure template for spreadsheet data while the other is a coding template of partial data in the virtual spreadsheet, for the analysis of the virtual spreadsheet data. Compared with the prior art, the sensing tag system can solve the problems of the unique identification of the sensor, the characteristic identification of the sensor, the analysis of the sensor sampling data and the like in a process of fusing a radio frequency identification technique and a sensor technique.
Description
Technical field
The present invention relates to the REID field, more particularly, relate to sensing tag system based on sensor virtual spreadsheet self-described.
Background technology
REID is used can effectively solve the quick collection of supply chain infosystem front end data and unique identification of goods and materials, but along with the raising that Transport Safety in the supply chain is required, the transportation related side is except the static attribute of the article of transporting in the GPRS container, also need to control the process status of article in the container (as temperature, humidity, vibrate and illegally unpack etc.), the simple REID that adopts is difficult to realize these requirements, need to adopt the related sensor technology to realize these requirements, it is the actual requirement and the inexorable trend of current techniques development and application that radio-frequency (RF) identification and sensorless technology merge.
Current general active radio-frequency recognition system is made up of radio-frequency (RF) tag, read write line and background data base system.Merge in the design in radio-frequency (RF) identification and sensor technology, the sensor that needs to add correlation type in active radio-frequency (RF) tag realizes that the hardware of system is formed module as shown in Figure 1.Sensing tag system mainly contains sensing label, read write line and background information system three parts, the a plurality of physical sensors of sensing label management and control, be responsible for sensors configured performance parameter, the relevant sensing data of collection, the relevant sensing data of transmission to tasks such as read write lines, be transferred to after read write line is handled sensor related data and carry out stores processor in the background information system with storage.Physical sensors mainly is to adopt some general digital sensors in the sensing label, and sensor itself does not possess the self-described parameter.
There are the following problems when handling the digital sensor related data for read write line: the 1. read write line type of different sensors in automatic unique identification sensing label how; 2. read write line need be known sensor type and basic parameter in the sensing label automatically, so that read write line can effectively be discerned measure physical quantities and sensors configured parameter; 3. after the sensing data that sensor collected was transferred to read write line, read write line must have the ability that phase separation closes sensing data of conciliating of discerning; 4. as an open cycle system, system has the demand of the different sensing labels that application newly grinds, the number of institute's belt sensor, sensing type become with need in the sensing label, the sensor of same type also may adopt the sensor of different model, and the follow-up sensor that newly grinds in the sensing label should be able to be discerned by existing read write line.
Sensor possesses the self-described function and can effectively address the above problem.But general data transducer does not have the self-described function, and adopts the sensor virtual spreadsheet technology can realize the self-described function of system realizing effective identification and the processing of read write line to the relevant sensing data of the sensor in the sensing label.
The sensor electrical subdatasheet is similar to computer-internal COMS BIOS stored information, the correlation parameter of sensor has been described, such as self-described information such as sensor production merchant title, sensor type and sequence numbers, but the sensor correlation parameter that utilizes the identification of sensor electrical subdatasheet information aiding in literacy device to be connected with sensing label can be the function that sensor provides self-described and plug and play.The sensor electrical subdatasheet mainly is made up of some data fields, and they can describe type of sensor, behavior and attribute of performance.
The sensor electrical subdatasheet generally is stored among the built-in EEPROM of sensor node, by 1-wire single-wire-protocol etc. it is conducted interviews.Do not use sensor electrical subdatasheet structure to carry out under the situation of self-described to some analog sensors and digital sensor, can adopt sensor virtual spreadsheet to carry out the self-described of sensor, will describe the virtual spreadsheet file storage of sensor on relevant embedded device EEPROM, local computer or network data base.
At present domestic about there being some active radio-frequency (RF) identification sensing tag system Related products not adopt the design philosophy of sensor self-described, mainly be that RFID tag connects one to two sensor on hardware design, mainly be that read write line is independently controlled the related sensor in the sensing label on the software design, sensor do not adopted the self-described recognition mechanism.Can not system solve above-mentioned four problems mentioning like this, be read write line can not automatic unique identification sensing label in the unique identifier of sensor, sensor type and sensor basic parameter, particularly can not solve the 4th problem, promptly the sensing tag system of being developed can not be as an open cycle system, follow-up number of newly grinding institute's belt sensor in the different sensing labels, the sensing type becomes with need, realize the function of intelligence sensor plug and play, the sensor of same type also may adopt the sensor of different model, the follow-up sensor that newly grinds in the sensing label can not be discerned by existing read write line, a kind of sensing label of every development read write line of must upgrading a time, can't guarantee the compatible fully sensing label of development in the past, cause the confusion of system easily.
Summary of the invention
Technical matters to be solved by this invention is, overcomes the deficiencies in the prior art, and a kind of sensing tag system based on sensor virtual spreadsheet self-described is provided.
The present invention is based on the sensing label of sensor virtual spreadsheet self-described, be achieved by following technical proposals, described system partly is made up of sensing label part and read write line;
The sensing data of storage sensor recognition data, sensor characteristic data, sensor configuration parameter, collection all adopts cramped construction in the sensing label, adopt database table structure to be described and allocation index, to each sensor, sensor ID spreadsheet, sensor characteristics spreadsheet and sensor sample configuration parameter adopt cramped construction to be stored in the database table, and the sensing data address mainly is the index of sensor acquisition address data memory; Among the EEPROM of sensing label, each sensor corresponding two virtual spreadsheets, i.e. sensor ID spreadsheet and sensor characteristics spreadsheet;
The read write line part provides two kinds of templates for the parsing of virtual spreadsheet data, a kind of is compact electronics tables of data data structure template, provide the basic foundation of segmentation for resolving the spreadsheet data collection, comprise the data structure of sensor recognition data and two kinds of data sets of sensor performance data; Another kind is the coding templet of partial data in the virtual spreadsheet, for the coded data that data centralization parses is shone upon realistic meaning and relevant supplementary information.
The length that comprises field in the described sensor virtual spreadsheet, the length of described field defines according to tables of data, promptly in the sensor tag in the sensor virtual spreadsheet length of field definition can change.
Comprise field type and field quantity in the described sensor virtual spreadsheet, described field type and field quantity define according to tables of data, promptly in the sensor tag in the sensor virtual spreadsheet field type and quantity can increase, reduce and change.
Described sensor virtual spreadsheet comprises data set type and data set, and described data set type and data set quantity define according to tables of data, and promptly sensor virtual spreadsheet data set type and quantity can increase in the sensing label.
Described sensor ID spreadsheet, sensor characteristics spreadsheet are the data set of self-described sensor relevant feature parameters, can adopt with sensor ID spreadsheet, data structure that the sensor characteristics spreadsheet is close and come the data set of self-described sensor relevant feature parameters.
Described physical sensors sensing configuration parameter adopts database table structure to describe, and described read write line is resolved by data template.
Compared with prior art, can solve REID and carry out the unique identification of sensor in the fusion process with sensor technology, the problems such as parsing of sensor characteristics identification and sensor sample data, for sensing tag system as an open cycle system, sensing label and universal tag mix use, can be sensing label and choose at random number of sensors and type according to practical application request, plug and play provides technology to realize supporting, realize the back compatible of read write line, also can realize different manufacturers, different read write lines and sensing label are discerned mutually with compatible, for the sensing tag system large-scale application is established the technology application foundation.
Description of drawings
Fig. 1 is that sensor spreadsheet data and image data are resolved synoptic diagram.
Embodiment
Below the present invention is described further.
The related data that relates to sensor in sensing label mainly contains three classes, and the one, the self-description data of sensor type parameter, the 2nd, sensor configuration parameter, the 3rd, the sensing data that sensor acquisition arrives.The storage mode of these three kinds of data in sensing label determined the mode of operation of sensor to a certain extent.Sensor related data is stored in the EEPROM space of sensing label can take two class modes, it is the data storage of compact data storage and band data structure and content, wherein the compact storage mode is stored continuously to real data, the centre does not have data related pattern information, need come resolution data by the stay in place form of data; And the data of band data structure and content in contrast, has related pattern information in the data.
The more passive radio-frequency identification labeled storage space of EEPROM capacity of active sensor label that is used for container is much bigger, but owing to reasons such as power supplys, reality also has only tens K to K bytes up to a hundred, and the material information that wherein will distribute a large amount of storage spaces to be used in the storage container is stored and the interior associative operation of showing of radio-frequency (RF) tag.Sensing data is gathered demand for a long time in the practical application, more needs bigger storage space, thereby limited storage space, will consider actual storage demand in the design data storage.
In the container sensing label, first, needing storage owing to need a plurality of sensors such as design temperature, humidity, vibration, door switch, same sensor to need two spreadsheet data, is respectively sensor identification spreadsheet data and sensor performance spreadsheet data.The second, sensor has the demand of continuous acquisition data, in the general tens days transportation of container, needs continuous acquisition correlation behavior data, and this data volume is very big, if the data tape structrual description of each collection, the storage space that needs can be bigger; The 3rd, in the sensing label to sensor acquisition to data also have certain statistical demand, the data structure demand is various; The 4th, radio communication adopts power consumption big, should reduce data quantity transmitted as far as possible, and the data of band structure have increased transmitted data amount.
Data storage is designed to cramped construction in the system sensing label of the present invention, reduces the storage of sensing label and the workload of processing; And the work that needs a large amount of storage spaces and complicated calculations is placed in the read write line and carries out.Storage sensor ID spreadsheet data, sensor characteristics spreadsheet data, sensor configuration parameter, collection sensing data all adopt cramped construction in the sensing label, adopt database table structure to be described and allocation index, as shown in table 1, to each sensor, sensor ID spreadsheet, sensor characteristics spreadsheet and sensor sample configuration parameter adopt cramped construction to be stored in the tables of data, and the sensing data address mainly is the index of sensor acquisition address data memory.And data structure template, coding templet and the mechanism for resolving of resolving the cramped construction data are stored and are operated by read write line respectively.
Table 1 sensor related data list structure
| The sensor ID spreadsheet | The sensor characteristics spreadsheet | The sensor sample configuration | The sensing data address |
| 1 sensor ID spreadsheet | 1 sensor characteristics spreadsheet | The configuration of 1 sensor sample | 1 sensing data address |
| 2 sensor ID spreadsheets | 2 sensor characteristics spreadsheets | The configuration of 2 sensor samples | 2 sensing data addresses |
| 3 sensor ID spreadsheets | 3 sensor characteristics spreadsheets | The configuration of 3 sensor samples | 3 sensing data addresses |
| 4 sensor ID spreadsheets | 4 sensor characteristics spreadsheets | The configuration of 4 sensor samples | 4 sensing data addresses |
Wherein, sensor sample configuration mainly be sensor configuration time, sampling interval, monitoring time-delay, threshold value bound are triggered be provided with, the store and forward message mode of data set etc. is provided with.
System of the present invention partly is made up of sensing label part and read write line;
The sensing label part
Because digital sensor is not with relevant self-described information, so in the EEPROM of sensing label, each sensor corresponding two virtual spreadsheets, i.e. sensor ID spreadsheet and sensor characteristics spreadsheet.
It is to allow this physical sensors of the unique identification of read write line that the sensor ID spreadsheet mainly acts on, and this data set is read-only.The sensor ID spreadsheet mainly is made up of 64 long data sets, and the bit length and the span of its producer's numbering, model, version word, version number and sequence number are as shown in table 2.Wherein producer be coded in the read write line or the background information system in corresponding producer coding schedule is arranged, many times not necessarily need to resolve this spreadsheet, and only it as the sensor unique identifier, the MAC Address of similar network interface card.
Table 2 sensor ID spreadsheet
| Producer's numbering | Model | The version word | Version number | Sequence number |
| 14 (17-16381) | 15 (0-32,767) | 5 characters (A-Z) | 6 (0-63) | 24 (0-16777215) |
It is the type and the basic parameter of self-described physical sensors that the sensor characteristics spreadsheet mainly acts on, and read write line can automatic identification sensor type and basic parameter, so that read write line can effectively be discerned measure physical quantities and sensors configured parameter.The sensor characteristics spreadsheet is made up of 80 long data sets, and the length of its different field is as shown in table 3.The spreadsheet type mainly is the extended capability that will realize that this spreadsheet is later, and greatest measure is 2
3=8, this place assignment is 001
2The types of physical sensors coding is the sensors of various types coding, is 31 as the temperature sensor coding, and sensor type is coded in the read write line has concrete coding templet to different sensor types; The logical sensor map field mainly is the multiple function of mapping definition physical sensors, a physical sensors is realized the function of a plurality of logical sensors, logical sensor is mapped in concrete code parsing template in the read write line, it also can relate to the relevant data structure template of some sensing datas that collect; Data transmission format mainly defines the length that is of sensor transmissions unsigned number, and data transmission format has concrete coding templet in read write line; Scale factor significant figure, scale factor index, side-play amount significant figure and side-play amount index mainly are the measurement ranges of definition sensor, and concrete computation process is carried out in read write line; The general relative error of the main categorised regulation sampled data of data reliability, it is that concrete coding templet is arranged in the read write line; Sensor configuration mainly defines whether configurable parameter of digital sensor, and 0 for not configurable, and 1 is configurable.
Table 3 sensor characteristics spreadsheet
| Field | Title | Length | Field | Title | Length |
| ??1 | The spreadsheet type | 3 | ??7 | The scale factor index | 6 |
| ??2 | Types of physical sensors | 7 | ??8 | The side-play amount significant figure | 11 |
| ??3 | The type expansion | 5 | ??9 | The side-play amount index | 6 |
| ??4 | The logical sensor mapping | 16 | ??10 | Data precision | 4 |
| ??5 | Data transmission format | 3 | ??11 | Sensor configuration | 1 |
| ??6 | The scale factor significant figure | 11 | ??12 | For future use | 7 |
The read write line part:
The read write line part mainly contains two kinds of templates to the parsing of virtual spreadsheet data, a kind of is compact electronics tables of data data structure template, mainly be the basic foundation that segmentation is provided for parsing spreadsheet data collection, mainly contain the data structure of sensor ID spreadsheet and two kinds of data sets of sensor characteristics spreadsheet; Another kind is the coding templet of partial data in the virtual spreadsheet, mainly be coded data mapping realistic meaning and the relevant supplementary information that parses for data centralization, mainly contain the coding templet of manufacturer (14), types of physical sensors (7), expansion type (5), logical sensor mapping (16), data transmission format (3), data precision fields such as (4).
Compact electronics tables of data data structure template aspect, the main data structure of storage sensor identification spreadsheet and two kinds of data sets of sensor characteristics spreadsheet in the EEPROM space of read write line part, its data structure is respectively shown in table 2 and table 3.
Aspect the coding templet of data, the main reference world or industry standard, the coding templet of sensor production producer relates generally to the tables of data of manufacturer's relevant information, and 64 identifiers during as the unique identification marking symbol of sensor, can not needed the coding templet of sensor production producer; The types of physical sensors coding templet mainly is that the physical quantity that sensor is gathered is defined, its coding templet field has code, measure physical quantities, physical quantity unit etc., and wherein the physical quantity unit sensing data that can be collection provides unified international unit; The expansion type coding templet mainly is that the chemical substance that sensor relates to is encoded, and its code field mainly contains code and chemical substance etc.; The code field of sensor mapping code template mainly contains code and sensor measurement physical function etc.; The field of data transmission format coding templet mainly contains code and transformat definition etc.; The data precision coding templet mainly contains fields such as code and data precision definition.
The dominant mechanism of system of the present invention operation in two sub-sections, the one, the parsing of sensor type and parameter and configuration flow, the 2nd, the process of analysis of sensor acquisition sensing data, as shown in Figure 3:
1) process of analysis of sensor type and parameter
Before the sensor of background information system in the configuration sensing label, read write line at first sends the read transducer parameter command to sensing label, and order has sensor and selects parameter (as sensor type, sensor ID number, the inquiry of logical sensor configuration condition) to select corresponding sensor; Processor is judged and is obtained sensor ID number according to selecting parameter to carry out relevant inquiring in the sensing label, transmit above-mentioned spreadsheet data collection then according to sensor ID read sensor ID spreadsheet data collection and feature spreadsheet data collection number in the sensor related data table, and by wireless mode to read write line; After the read write line receiving sensor associated data set, the reader processing device at first calls the spreadsheet data stay in place form of storing in the read write line and carries out the resolution data collection, decomposite the relevant field of data centralization, for the partial code field that decomposites, continue to call the correlative coding template of storing in the read write line and mate, thereby parse whole sensor type and parameter.The user can be provided with the logical sensor map field by type of sensor and parameter, also can the sampling configuration parameter of sensor be provided with.
2) process of analysis of sensor acquisition sensing data
For each physical sensors in the sensing label, configurable a plurality of logical sensor, the memory address of each logical sensor image data is according to relevant configuration principle dynamic adjustable, collect relevant sensing data after, begin storage from the address of logical sensor appointment.When read write line needs the relevant sensing data of read sensor, the sensing label processor reads sampled data from the start address of designated store, form a cramped construction, the continuous sensing data piece of storing according to the opening sequence of logical sensor, and the sensing data piece is transferred to read write line by wireless mode.
After read write line receives the sensing data piece, can dispose (unlatching) parameter, resolve the sensing data piece according to the logical sensor in the sensor characteristics spreadsheet in conjunction with the data structure template of counterlogic sensor, to the data field after resolving, need call the sensor type parameter of sensor characteristics spreadsheet, the realistic meaning of analyze gathering physical quantity with and problem such as dimension.
The reader processing device is behind the sensing data piece that the parsing sensor acquisition arrives, according to the application demand that uploads to the background information system, field after data such as the sensing data of sensor ID spreadsheet data, feature spreadsheet data, sensor acquisition and relevant supplementary information can being resolved according to the front is repackaged into the XML file, and upload to the background information system, background information system effectively analyzing XML data file shows relevant treatment, maybe this XML data file directly is stored in the Relational database.
Claims (6)
1. based on the sensing tag system of sensor virtual spreadsheet self-described, it is characterized in that described system partly is made up of sensing label part and read write line;
Storage sensor recognition data, sensor characteristic data, sensor configuration parameter, collection sensing data all adopt cramped construction in the sensing label, adopt database table structure to be described and allocation index, to each physical sensors, sensor ID spreadsheet, sensor characteristics spreadsheet and sensor sample configuration parameter adopt cramped construction to be stored in the tables of data, and the sensing data address mainly is the index of sensor acquisition address data memory; Among the EEPROM of sensing label, each sensor corresponding two virtual spreadsheets, i.e. sensor ID TEDS and sensor characteristics spreadsheet;
The read write line part provides two kinds of templates for the parsing of virtual spreadsheet data, a kind of is compact electronics tables of data data structure template, provide the basic foundation of segmentation for resolving the spreadsheet data collection, comprise the data structure of sensor recognition data and two kinds of data sets of sensor performance data; Another kind is the coding templet of partial data in the virtual spreadsheet, for the coded data that data centralization parses is shone upon realistic meaning and relevant supplementary information.
2. the sensing tag system based on sensor virtual spreadsheet self-described according to claim 1 is characterized in that, comprises the length of field in the described sensor virtual spreadsheet, and the length of described field defines according to tables of data.
3. the sensing tag system based on sensor virtual spreadsheet self-described according to claim 1, it is characterized in that, comprise field type and field quantity in the described sensor virtual spreadsheet, described field type and field quantity define according to tables of data.
4. the sensing tag system based on sensor virtual spreadsheet self-described according to claim 1, it is characterized in that, described sensor virtual spreadsheet comprises data set type and data set, and described data set type and data set quantity define according to tables of data.
5. the sensing tag system based on sensor virtual spreadsheet self-described according to claim 1 is characterized in that, described sensor ID spreadsheet, sensor characteristics spreadsheet are the data set of self-described sensor relevant feature parameters.
6. the sensing tag system based on sensor virtual spreadsheet self-described according to claim 1 is characterized in that, described physical sensors sensing configuration parameter adopts database table structure to describe, and described read write line is resolved by data template.
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