EP2100474A1 - Unité capteur-transpondeur et son procédé de fonctionnement - Google Patents

Unité capteur-transpondeur et son procédé de fonctionnement

Info

Publication number
EP2100474A1
EP2100474A1 EP07856356A EP07856356A EP2100474A1 EP 2100474 A1 EP2100474 A1 EP 2100474A1 EP 07856356 A EP07856356 A EP 07856356A EP 07856356 A EP07856356 A EP 07856356A EP 2100474 A1 EP2100474 A1 EP 2100474A1
Authority
EP
European Patent Office
Prior art keywords
sensor
transponder
container
transponder unit
unit according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07856356A
Other languages
German (de)
English (en)
Inventor
Keith Ulrich
Stefan Wilms
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deutsche Post AG
Original Assignee
Deutsche Post AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deutsche Post AG filed Critical Deutsche Post AG
Publication of EP2100474A1 publication Critical patent/EP2100474A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q2209/00—Arrangements in telecontrol or telemetry systems
    • H04Q2209/40—Arrangements in telecontrol or telemetry systems using a wireless architecture
    • H04Q2209/47—Arrangements in telecontrol or telemetry systems using a wireless architecture using RFID associated with sensors

Definitions

  • the invention relates to a sensor transponder unit.
  • the invention further relates to a method for operating the sensor transponder unit.
  • the known sensor transponder units consist of a unitary component which contains a sensor, a transponder, a computing unit, a memory unit and a battery.
  • the invention has for its object to provide a sensor transponder unit that can be used as flexible as possible in different technology areas.
  • a particularly advantageous use of the sensor-transponder unit according to the invention provides to use it in a container, in particular a container for carrying out transport operations, in a logistics system.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the transponder and the sensor are designed as spatially separated components.
  • a further development of the sensor transponder unit, the method of its operation, the container and the use of the sensor transponder unit provides that the transponder and the sensor are in two separate housings.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the transponder and the sensor are connected to each other by a connecting element (V).
  • a further development of the sensor transponder unit, of the method for its operation, of the container and of the use of the sensor transponder unit provides that it can be connected to a container, wherein the container contains an interior for accommodating at least one object.
  • a refinement of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the sensor is located in the interior of the container.
  • Method for their operation, the container and the use of the sensor-transponder unit provides that the transponder is located further out than the sensor.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the transponder and the sensor are connected to each other by at least one cable.
  • a further development of the sensor transponder unit, of the method for its operation, of the container and of the use of the sensor transponder unit provides that the transponder and the sensor are connected to one another by an electromagnetic coupling means.
  • a further development of the sensor transponder unit, of the method for its operation, of the container and of the use of the sensor transponder unit is characterized in that measurement data of the object are detected by a sensor, that the acquired measured values are transmitted to a transponder are transmitted and that the transponder transmits state information to a reading unit as a function of the measured data.
  • a further development of the sensor transponder unit, the method for its operation, the container and the use of the sensor transponder unit provides that the status information is stored.
  • a refinement of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the status information is stored in a storage medium mounted in the container.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit provides that the connecting element includes at least one light guide.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the sensor is closer to the object than the transponder.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit provides that the intermediate layer has a shock-absorbing effect.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the intermediate layer absorbs electromagnetic radiation.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit provides that the intermediate layer reflects electromagnetic radiation.
  • a refinement of the sensor transponder unit, the method for operating it, the container and the use of the sensor transponder unit is characterized in that the energy is supplied by the reading unit.
  • a further development of the sensor transponder unit, of the method for its operation, of the container and of the use of the sensor transponder unit provides that a forwarding of the energy from the transponder to the sensor takes place.
  • a further development of the sensor transponder unit, the method for its operation, the container and the use of the sensor transponder unit is characterized in that a signal line between the sensor and the transponder is effected by a connecting element.
  • a further development of the container, the method for producing the container, the logistics system and the use of the container provides that the container is transported from a point of dispatch to a receiving location.
  • a refinement of the container, of the method for producing the container, of the logistics system and of the use of the container is characterized in that the logistics system has reading means, which thus have at least one component in the container.
  • Container arranged transponder interact that transmitted by a sensor measured data of the object are transmitted to the reading units.
  • a further development of the container, the method for producing the container, the logistics system and the use of the container provides that determines the position of the container and that the position of the container is assigned to the state information obtained from the sensor.
  • a development of the container, the method for producing the container, the logistics system and the use of the container is characterized in that the transponder energy is supplied.
  • a further development of the container, the method for producing the container, the logistics system and the use of the container provides that the energy is supplied by the reading unit.
  • a further development of the container, the method for producing the container, the logistics system and the use of the container is characterized in that a transfer of energy from the transponder to the sensor takes place.
  • a further development of the container, the method for producing the container, the logistics system and the use of the container provides that a signal line between the sensor and the transponder by a connecting element takes place.
  • a particularly preferred embodiment of the invention provides for a device comprising at least one transponder and at least one transponder.
  • nem sensor element to connect with the packaging.
  • a firm connection with the packaging should also improve the overall process and give the possibility of certification.
  • the RFID component which allows non-contact readout (important in refrigerated transports: reading the temperature information without having to open the packaging!), Should sit tightly but protected behind the outer wall.
  • the temperature sensor should be attached as close as possible to the product, ie somewhere as centrally as possible in the interior of the packaging. Sensors and RFID are preferably connected via a serial connection, in this case two wires.
  • a further development of the invention provides for distributing and connecting a plurality of identical temperature sensors in the packaging so as to better absorb the temperature behavior in the packaging. You can also install other or additional sensors that may measure humidity or vibration.
  • the electronics should be incorporated into the packaging unit as invisibly as possible.
  • the electronic components within the packaging may be finely meshed. This meshing (crosslinking) is preferably carried out during a production process of the packaging.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that a position of the transponder is determined.
  • a further development of the sensor transponder unit, of the method for its operation, of the container and of the use of the sensor transponder unit is characterized in that the position is stored in the data processing unit.
  • a method for operating, the container and the use of the sensor-transponder unit provides that the position of the container is determined and that the position of the container is assigned to the status information obtained from the sensor.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the transponder energy is supplied.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit provides that the energy is supplied by the reading unit.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that a forwarding of energy from the transponder to the
  • a further development of the sensor transponder unit, the method for its operation, the container and the use of the sensor transponder unit provides that a signal line between the sensor and the transponder is effected by a connecting element.
  • a further development of the sensor-transponder unit, the method for its operation, the container and the use of the sensor-transponder unit is characterized in that the connecting element includes at least one wire.
  • transponders For an inventive use are many types of transponders. Particularly preferred are transponders that serve as transmitting and / or receiving devices. In particular, these are receivers that are suitable after receiving a foreign signal to emit its own signal.
  • transponders which are provided with at least one identification.
  • transponders are also referred to below as RFID tags.
  • RFID tags transponders with identification information
  • An RFID tag consists of a microchip and an antenna. A code is stored on the chip that contains processing-relevant information. In particular, the information is identification information (ID).
  • Transponders are equipped to send and / or receive signals on the triggering (radio) signal of a reader. Active transponders contain a power supply for their operation. Passive transponders, however, receive energy through the signals emitted by the reader.
  • the inventive method for monitoring a container for receiving objects provides that a sensor in the interior is used to determine changes in state of the physical nature of the container contents.
  • the measurement data is transmitted to the transponder.
  • the transponder transmits status information to a reading unit as a function of the measured data.
  • the measurement data themselves are transmitted as state information to the reading unit.
  • critical variables determined from the measured data for example temperature exceedances, are transmitted.
  • a transmission of selected, compressed and / or reduced values has the advantage that storage and transmission capacities are used more effectively.
  • antennas tuned to the wavelength of the electromagnetic radiation of the transponders are used.
  • the information collected in this way is then processed further.
  • the reading unit is arranged in a transport means for the container, in a warehouse or a processing center for the container.
  • a data processing unit which is preferably connectable to the reading unit, receives this status information from the reading unit.
  • a further development of the invention is characterized in that the location of the container is determined by a locating means in connection with the container and the position of the container is assigned to the status information obtained from the sensor.
  • the position of the container can be determined by a locating means directly on the container or on a means of transport, with which the container is transported. If the locating means is located at an associated means of transport, it is preferably in connection with the data processing unit of the container.
  • the position of the container can be determined, for example, by a locating means in the form of a GSM module, a GPS module and / or a direction-finding transmitter.
  • the different location means can be used depending on a required accuracy of the position determination, where they can be used either vertically or in parallel.
  • a further development of the method, the logistics system, the container, the network node and the computer program product provides that the status information obtained from the sensors is compared with nominal values, with a deviation from a nominal value being regarded as an alarm.
  • the comparison of the state information is preferably carried out by comparing the measured electrical properties of the conductive layers with a desired value of the electrical properties. It can be provided that a deviation of the detected by the sensor physical condition of the container material is not considered by a target value as an alarm, if the deviation is associated with a position of the container, which is deposited as a position for the permitted opening of a container in the data processing unit.
  • the status information obtained from the sensor is transmitted to a communication module on the container, and the communication module transmits the status information to a message receiving device.
  • a further development of the invention provides to use at least one transponder as a communication module.
  • the transmission of the status information from the communication module to the message receiving device may take place on the transport path or after the arrival of the container at the destination.
  • the transmission of the status information on the transport path preferably takes place only if a comparison within the data processing unit shows that a deviation of the status information of setpoint values detected by the sensors is regarded as an alarm.
  • the determination of the position of the container and the assignment of the position to the status information obtained by the sensor preferably takes place in the data processing unit of the container, but it can also be used in the message processing unit. receiving device or be performed in the monitoring center.
  • a further development of the invention comprises, in addition to a method for monitoring a container, a container with means for monitoring according to the invention.
  • the means for monitoring are, in particular, sensors which are suitable for detecting at least one state quantity acting in the interior of the container.
  • the container further comprises, in one embodiment, a data processing unit and location means for determining the position of the container in association with the container.
  • containers that are equipped to interact with a data processing unit located outside the container.
  • At least one transponder as communication means in such a way that it transmits measured values recorded by at least one sensor and / or state information obtained from the measured values to a data processing system.
  • Such an embodiment has the advantage that computing operations take place at least partially outside the containers. This makes it possible to use within the container no or only small storage means. In particular, it is advantageous to dimension the storage means so that they store identification information and / or information about the presence of an event requiring evaluation. Details of the event requiring evaluation are stored and / or edited outside the containers in a particularly preferred embodiment of the invention.
  • the container has a communication module in connection with the data processing unit and an atmosphere measuring device such as a temperature and / or humidity sensor.
  • the container further comprises a protective sheath.
  • an object detection means for registering at least the number of objects introduced into the container.
  • the method according to the invention has the advantage that the condition of a container during the transport of objects can be comprehensively monitored. Techniques for measuring and monitoring the physical nature of a container material and / or environmental conditions may be used in conjunction with locating means to associate an event or condition on the container with a position of the container. This allows for the exact definition of the location and thus, for example, a jurisdiction in which an event has occurred.
  • Fig. Ia is a schematic representation of one of a transponder (T) and a sensor (S) existing
  • Fig. Ib is a schematic representation of one of a
  • Fig. 2 is a schematic representation of one of a
  • Fig. 3 is a schematic representation of one of four
  • FIG. 4 shows a schematic representation of a transport process of the container, including a temperature profile
  • FIG. 5 shows an integration of the transport process illustrated in FIG. 4 into a monitoring system (Shipmint Control &Management-SCM);
  • FIG. 6 shows a manual detection of data of a transponder 600, which is located on a container 601, by a reading device 602;
  • Fig. 7a shows an embodiment of a container, in which a Sensor 701 is formed as a sensor surface and is located between objects 702, 703, 704 and 705 in an interior of a container 706;
  • Fig. 7b shows an embodiment of a container in which a
  • FIG. 8a shows an embodiment of a container in which circular sensors are arranged in the interior of the container
  • FIG. 8b shows a further embodiment of a container in which circular sensors are arranged in the interior of the container
  • FIG. 9 shows a cross section through a transport container according to the invention with several sensors and transponders
  • FIG. 10 is a perspective view of a container according to the invention.
  • FIG. 11 shows a container according to the invention, in which a sensor is located in the region of the objects and is connected to a transponder arranged outside the interior of the container, and
  • Fig. 12 juxtaposed strips to illustrate useful differences in length between different sensor-transponder combinations.
  • the invention includes a variety of combinations of sensors and transponders.
  • transponders in a suitable geometry, for example in the form of a net, a ring or a mat.
  • FIGS. 1 a, 1 b, 2 and 3 schematically illustrate sensor-transponder units according to the invention.
  • connection means V show examples of a connection between sensors and transponders by connecting means V.
  • the connecting means V can be designed in many different ways. For example, these are elements for forwarding signals.
  • the connection means are equipped so that they also allow mechanical contact between transponders and sensors.
  • the connecting means are bendable.
  • the invention is provided to integrate at least individual sensor transponder units into the containers during a production process of the containers. This occurs, for example, in that blanks of a foldable material used to produce the carton are connected to the sensor transponder units for production of a carton. It is particularly advantageous first to make the connection with the sensor transponder units and then to fold the blanks in a desired shape for the design of the container.
  • a temperature sensor When using a temperature sensor, it is particularly advantageous if it is at least partially in contact with at least one object. This ensures that the sensor has the same temperature as the object to be monitored.
  • the number of sensors and transponders is adapted to the requirements of the monitoring to be effected.
  • the connecting means can be better placed in containers for the dispatch of objects.
  • the connecting means V expediently has a length of 5 cm to 1 m, preferably between 10 cm and 80 cm.
  • the connecting means V effects a thermal insulation between the sensor S and the transponder T.
  • the connecting element consists at least partially of a thermally insulating material.
  • Fig. 1 shows a schematic representation of a transponder (T) and a sensor (S) existing sensor transponder unit.
  • FIG. 1b shows a schematic representation of a sensor-transponder unit consisting of a sensor and two transponders.
  • FIG. 2 shows a schematic representation of a sensor transponder unit consisting of a transponder and two sensors. The use of several sensors improves the monitoring possibilities.
  • the arrangement of the sensors and the transponder is expediently carried out in each case according to the requirements (proximity to the objects to be monitored or to the likewise to be monitored external contact points).
  • FIG. 3 a sensor transponder unit comprising four sensors (S) and four transponders (T) is shown for this purpose.
  • the illustrated sensor transponder units can be used in a variety of applications.
  • FIGS. 4 to 12 An application of the sensor-transponder unit in logistics systems is illustrated below with reference to FIGS. 4 to 12 as a particularly preferred embodiment of the invention.
  • the logistics chain shown in FIGS. 4 to 12 enables a transport of refrigerated goods to be kept Objects over any distance, for example transcontinental.
  • FIG. 4 shows a schematic representation of a transport process of a container equipped with a sensor transponder unit. This figure also contains an illustration of a temperature profile determined during the transport process.
  • Examples of other parameters that may need to be monitored and observed are humidity and / or shock.
  • a particularly preferred embodiment of the invention provides to calculate an expected duration of use of the objects.
  • sensor RFID units are used according to the invention, which monitor a temperature distribution and determine a total effect on the objects.
  • Overall action here preferably means a weighting of temperature excesses and times in which the temperature exceeded.
  • a calculation of the total impact on the object or the objects is possible in one embodiment by a computing unit in the containers.
  • FIG. 5 shows an integration of the transport process shown in FIG. 4 into a monitoring system (Shipmint Control & Management - SCM).
  • FIGS. 4 and 5 show that a measurement of the measured values and a transmission of status information (measured values or values derived therefrom) takes place in different processing steps of a transport chain.
  • a first measurement of properties of the physical objects for example, a temperature measurement-takes place in a method step 1 upon acceptance of the containers from a delivery warehouse (dispatch location) 401, if appropriate when loading into a transporter 402.
  • step 2- for example, during a transport of the shipment from the delivery warehouse 401 to a warehouse 403, for example a cargo terminal of an airport, at least one further measurement and / or capture of other shipping-related data, for example of information relevant for customs clearance takes place.
  • a further measurement and / or a collection of further shipping-relevant information takes place, for example via a previous delivery period.
  • a method step 4 information is transmitted from the containers to the reading unit and / or from the reading unit to an evaluation unit.
  • Such an operation can take place, for example, during transport of the containers-for example in an aircraft.
  • a transmission during a takeoff phase of an aircraft 404 is shown.
  • a further temperature measurement and / or a transmission of an expected arrival time takes place at a destination airport.
  • a measuring operation takes place during a transport of the container.
  • the containers After being transported to the destination airport, the containers are transported to another warehouse 406, for example a cargo terminal.
  • the received data is transmitted to the intended recipient.
  • the recorded measured values are supplemented by a further measuring process.
  • the containers are constructed so that they have an outer box and an inner box, wherein it is expedient, between the outer box and the inner box materials for Prevention of influences on the object or the objects provide.
  • Particularly reliable measured values are obtained by virtue of the fact that at least one of the sensors in the interior of the container is located in the region of the object or of the objects, preferably in contact with at least one object.
  • a determination of forecast values for the expected temperature - or the expected temperatures - with an unchanged transport of the container makes it possible to detect the danger of exceeding a critical temperature in advance.
  • exceeding the temperature is prevented by changing at least one transport parameter.
  • transport in a faster means of transport - for example a helicopter instead of a truck - can prevent the cold chain from being interrupted (exceeding a set temperature - in particular over a longer period than provided in product files).
  • a transport in cars with refrigeration or freezing facilities can be selected.
  • the closure means can already be contained in the possibly folded container when they are delivered. They may, for example, be accommodated in the container together with a pre-printed address label and / or an instruction for use and expediently detachably fastened.
  • the address label can be filled filled in a possibly marked area.
  • the container may also contain instructions for the use of the box, advertising imprints, postage stamps or other imprints.
  • FIG. 6 shows a manual detection of data of a transponder 600, which is located on a container 601, by a reading device 602.
  • FIG. 7 a shows an embodiment of a container in which a sensor 701 is designed as a sensor surface and is located between objects 702, 703, 704 and 705 in an interior of a container 706.
  • FIG. 7 b shows an embodiment of a container in which a sensor strip 801 is located between objects 802, 803, 804, 805, 806, 807 in an interior of a container 808.
  • Fig. 8a shows an embodiment of a container in which circular sensors are arranged in the interior of the container.
  • Fig. 8b shows a further embodiment of a container in which circular sensors are arranged in the interior of the container.
  • Fig. 9 is a cross section through an inventive
  • Transport container with multiple sensors and transponders shown The cross section shows that the side walls 121, 122, 123 and 124 of the inner box are parallel to the side walls 111, 112, 113 and 114 of the outer box.
  • the walls of the inner and outer boxes are in this embodiment of cardboard of a certain thickness, as is commonly used for packaging.
  • the blank of the outer box can, for example, in one piece of four parallel side walls 111, 112, 113, and 114 and an adjacent tab 160 which is connected to the side wall 111.
  • the tab 160 may extend over the entire length of the containers, or it are several smaller tabs, which are distributed over the length of the container.
  • the formation of the inner box can take place analogously via four side walls 121, 122, 123 and 124 and one or more tabs 170. Instead of the tabs 160 and 170, other types of connection can be used.
  • the attachment of the inner box on the side walls of the outer box can also be done in various ways. It has proved to be particularly expedient to provide at least one edge 150 of the inner box at least one respective tab 250 for attachment to the outer box. Preferably, the tabs are located at two opposite edges 50 of the inner box.
  • the formation of the tabs 250 can be done in several ways. It has proved to be particularly advantageous to punch out the tabs preferably in a U-shape from the side walls of the inner box so that they can be folded over a remaining fold line 180 in the direction of the arrow to the outer box. For each of the side walls of the outer walls, one or more connecting straps can be provided distributed over the length of the containers.
  • tabs and side walls together are expediently via bonds, but there are also other types of connection conceivable.
  • brackets or tabs that engage in corresponding recesses may be used.
  • FIG. 10 shows a perspective view of a container according to the invention.
  • FIG. 11 shows a container according to the invention, in which a sensor is located in the region of the objects and with an au Transponder is arranged outside the interior of the container.
  • FIG. 12 shows strips arranged next to each other to illustrate appropriate differences in length between different sensor-transponder combinations.
  • a particularly preferred Radio Frequency Identification enables automatic identification (radio recognition) and localization of objects.
  • Transponder also called RFID Tag, Smart Tag, Smart Label or RFID Chip
  • Readers with associated antenna also called Reader
  • transponders with little or no storage space are particularly advantageous, it is also possible to use transponders that store data.
  • the data are preferably read without contact and without visual contact.
  • Transponders without data storage are preferred.
  • transponder and reader takes place by means of electromagnetic waves. At low frequencies this happens inductively via a near field, at higher frequencies via an electromagnetic far field.
  • RFID tags can have rewriteable memory that can store information during their lifetime.
  • the RFID communication works as follows: The reader generates a high-frequency electromagnetic alternating field, which receives the antenna of the RFID tag. In the antenna coil, as soon as it comes close to the electromagnetic field, Indutationsström. This activates the microchip in the RFID tag. The induced current also charges a capacitor in passive tags, which ensures a permanent power supply of the chip. This takes over a built-in battery with active tags.
  • the microchip Once the microchip is activated, it receives commands that the reader modulates into its magnetic field. By modulating an answer into the field sent by the reader, the tag sends its serial number or other data requested by the reader.
  • the tag itself does not send a field, but only changes the electromagnetic field of the reader.
  • RF tags at 13.56 MHz from the UHF tags at 865-869 MHz (European frequencies):
  • HF tags use load modulation, which means they use short-circuiting energy from the alternating magnetic field. This can be detected by the reader. By bonding to the alternating magnetic field, this technique works exclusively in the near field.
  • the antennas of a Nahfeldtags therefore form a coil.
  • UHF tags use the electromagnetic far field to transmit the answer.
  • This embodiment of the method is called backscattering.
  • the electromagnetic wave is either absorbed or reflected with the largest possible return cross section.
  • the antennas are mostly dipoles, the chip sits in the middle of the RFID tag.
  • tags For reading out the tags, several, for example 10, free channels with an output of, for example, 2 watts are available in the UHF range, above one channel and below 3 channels, which can only be operated at lower power. All channels extend over a width of 200 kHz.
  • the tag response is done by modulating the response signal at 200 kHz on the CW, thus creating a sideband 200 kHz above and below this CW, so it lies exactly in an adjacent channel.
  • RFID tags may well be the size of books (eg in container logistics). However, it is advantageous to make very small RFID tags that can be easily integrated into the containers.
  • the range of passive transponders depends not only on the frequency but also significantly on the coil size.
  • Small batteryless RFID tags do not have their own power supply and must gain their supply voltage by induction from the radio signals of the reading units. While this reduces the cost and weight of the chips, it also reduces the range. This type of RFID tags is used for. For example, for product authentication and / or for tracking and tracing used, since the cost per unit are crucial. RFID tags with their own power supply achieve a considerably higher range and have a larger range of functions, but are more complex to manufacture.
  • Coded information is introduced into the transponders as control instruments for the parcel logistics.
  • the transponders may have a consecutive numbering - possibly with a check digit -, other numbering as well as address information or other information which classify the program or serve, for example, for advertising purposes.
  • RFID identification systems "smart transponders” - make it possible to optimize logistics processes.
  • the RFID microchip For operation, in particular for signal modulation, the RFID microchip must be supplied with energy.
  • RFID tags There are two types of RFID tags:
  • Passive RFID tags draw their energy to power the microchip from the received radio waves. With the antenna as coil, a capacitor is charged by induction, which supplies the day with energy. The range is here a few millimeters to a few centimeters.
  • Active RFID tags receive the power to power the microchip from a built-in battery. Usually, they are idle or do not send out information to increase the life of the energy source. Only when a special activation signal is received, the transmitter activates. This allows a much higher range, which can be up to about 100 meters. frequency ranges
  • High frequencies 3-30 MHz. Short to medium range, medium transmission speed, medium to low price range. In this frequency range, the so-called smart tags (usually 13.56 MHz) work.
  • RFID tags send their information in plain language, but some models also have the ability to encrypt their data.
  • Data record of the transponder is attached at the time of chip production (number). This is especially preferably for the identification fee and requires less production effort and lower energy consumption.
  • FRAM ferrromagnetic random access memory
  • SRAM static random access memory
  • Passive transponder - power supply is taken from the (electric / magnetic) field
  • Active transponder battery normally for expanding the range of data transfer, but also for parallel sensors.
  • RFID tags which have at least one sensor input.
  • an RFID tag having one or more sensor inputs, each modifying a label data word bit stream read by a label retrieval device, is modified.
  • An RFID tag may include a sensor input capable of receiving variable signals from one or more sensors, an analog variable, or a digital variable.
  • the amplitude of the RFID tag modulates the DS-RF carrier of the RF generator with its data word bitstream by charging and discharging the resonant circuit or antenna of the RFID tag in accordance with the binary values of that data word bitstream.
  • the data word bitstream is a series of on-off pulses representing, for example, a serial data word synchronization header and the RFID tag number.
  • Parity bits or a checksum value may also be included in the data word bitstream. These series of on-off pulses are detected by a tag reader (interrogator) which detects amplitude variations of its DS-RF signal. These amplitude variations are caused by the electromagnetically coupled or RF antenna coupled RFID tag which charges and discharges the resonant circuit or antenna of the tag reader or interrogator.
  • an RFID tag has a digital input for detecting a change in the voltage, the current or the resistance of a sensor connected to the digital input.
  • the sensor state of the digital input can determine if the bit values of the data word bitstream can be inverted. The difference between the two data word bitstreams results in the change in the sensor (open or closed), causing a Measured value is displayed.
  • a voltage or current supply of the sensor may originate from an external source or from the RFID tag itself, which then supplies some of the current from the electromagnetically coupled or RF antenna coupled continuous wave from the interrogator or label reader.
  • the sensor may be, for example, an electromechanical switch, a transistor, a Hall effect element, a phototransistor.
  • Another embodiment of the RFID tag has an analog input for detecting an analog sensor signal represented by a variable voltage, current or resistance value.
  • the analog input can be converted by a voltage comparator into an on-off high-low representation.
  • Voltage or current for powering one or more analog sensors may be sourced from an external source or from the RFID tag that utilizes a portion of the energy from the electromagnetically coupled or RF antenna coupled continuous wave from the interrogator or tag reader.
  • the analog sensor (s) may be an RTD, a thermocouple, a piezoelectric pressure transducer, and the like.
  • the value recorded can be, for example, the following: pressure, temperature, acceleration, vibration,
  • Moisture content, gas content, density, flow rate, sound intensity, radiation, magnetic flux, pH. Voltage or current for powering one or more sensors may be sourced from an external source or from the RFID tag, which then supplies some of the power from the electromagnetically coupled or RF antenna coupled strobe from the interrogator or tag reader.
  • the RFID tag may be made of a single semiconductor IC chip, or may consist of multiple semiconductor dies in a single IC package. It is also contemplated and within the scope of the invention that multi-chip RFID tags having multiple discrete electronic components be incorporated into the embodiments discussed above, including, for example, microcontrollers, memories, digital logic circuits, analog circuits, and discrete and / or monolithic Transducers or sensors.
  • a further development of the invention includes an RFID tag with a sensor input, the logic circuits in the
  • RFID tag causes data content to be modified.
  • the RFID tag If the RFID tag is passive, it has no internal power storage and the power for its circuitry comes from a near-field or far-field continuous wave radio frequency (DS-HF) source. This is installed, for example, in a means of transport (for example a land vehicle or aircraft) or a warehouse.
  • DS-HF near-field or far-field continuous wave radio frequency
  • the RFID tag When the RFID tag comes close to the DS-RF field, the RFID tag pulls energy from the field via electromagnetic or RF coupling. The nearby RFID tag affects the amplitude of the DS-RF carrier.
  • the DS-RF generator has an interrogator which detects changes in the amplitude of the DS-RF carrier and has an evaluation circuit which searches for one or more patterns in these amplitude variations over a period of time. If a recognizable pattern is detected, an RFID tag has been detected and the information in that recognizable pattern can be used.
  • the RFID tag can also provide the sensor with electrical power.
  • the RFID tag generates a data word bitstream that is read by an interrogator or tag reader.
  • This data word bit stream contains information that is influenced by a signal value of the sensor. If the signal value of the sensor changes, so do the
  • the sensor (s) may be digital or analog as described above.
  • the reading unit (interrogator or label reader) detects amplitude changes or frequency changes of an electromagnetic signal caused by the transponder (s) and converts them to the serial data word bit stream.
  • the invention thus provides a system in which RFID tags are used in a particularly advantageous manner so that they provide reliable information about a state and / or a location of at least one object.
  • Inventive RFID systems preferably transmit not only identification and position data but also temperature, humidity, shock absorption, biometry and other data. This data can be recorded and evaluated.
  • the RFID technology according to the invention makes it possible to map a global logistics chain in real time and to provide information about the current location, status, place of origin and destination as well as, if necessary, sensor data.
  • the treatment of sensitive objects can be promptly recorded by sensors and traced with exact position and time.
  • Supervised information includes:
  • Container identification uniquely coded serial number
  • passive RFID tag linking to the content data only after authorization and decoding
  • it is intended to capture only changes. Alternatively, it is possible to store a data history.
  • the invention enables the use of warning messages.
  • the alerts can be used to logistical processes - especially the sorting, storage and / or the
  • the server is operated by a program, which is preferably stored on a computer program product, for example a suitable storage medium.
  • Data can be supplied via various communication channels, for example the data channels of the transponders, mobile communication systems (PLUTUS, GSM, GPRS, UMTS). This makes possible:
  • the ability to access real-time information using RFID tags and integrate that information into information architectures is the concept of sensor-based services.
  • this makes it possible to inform an intended recipient or the sender of the object in a timely manner about the transport state.
  • Handling and / or means of transport are in this way capable of stationary, with the same level of information to achieve improved cooperation and to generate a suitable response based on the obtained sensor information.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

L'invention concerne une unité capteur-transpondeur avec au moins un capteur (S) et au moins un transpondeur (T). L'unité capteur-transpondeur est caractérisée selon l'invention en ce que le transpondeur (T) et le capteur (S) sont réalisés comme des composants séparés spatialement l'un de l'autre. L'invention concerne en outre un procédé de fonctionnement de l'unité capteur-transpondeur et une utilisation de l'unité capteur-transpondeur dans un système logique.
EP07856356A 2006-12-05 2007-12-04 Unité capteur-transpondeur et son procédé de fonctionnement Withdrawn EP2100474A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006057645A DE102006057645A1 (de) 2006-12-05 2006-12-05 Sensor-Transponder-Einheit und Verfahren zu ihrem Betreiben
PCT/EP2007/010515 WO2008067985A1 (fr) 2006-12-05 2007-12-04 Unité capteur-transpondeur et son procédé de fonctionnement

Publications (1)

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EP2100474A1 true EP2100474A1 (fr) 2009-09-16

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EP07856356A Withdrawn EP2100474A1 (fr) 2006-12-05 2007-12-04 Unité capteur-transpondeur et son procédé de fonctionnement

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US (1) US20100066561A1 (fr)
EP (1) EP2100474A1 (fr)
DE (1) DE102006057645A1 (fr)
WO (1) WO2008067985A1 (fr)

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Also Published As

Publication number Publication date
DE102006057645A8 (de) 2008-10-09
US20100066561A1 (en) 2010-03-18
WO2008067985A1 (fr) 2008-06-12
DE102006057645A1 (de) 2008-06-26

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