EP0525697A1 - Dispositif pour la reconnaissance de l'identité d'emplacements - Google Patents

Dispositif pour la reconnaissance de l'identité d'emplacements Download PDF

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Publication number
EP0525697A1
EP0525697A1 EP92112783A EP92112783A EP0525697A1 EP 0525697 A1 EP0525697 A1 EP 0525697A1 EP 92112783 A EP92112783 A EP 92112783A EP 92112783 A EP92112783 A EP 92112783A EP 0525697 A1 EP0525697 A1 EP 0525697A1
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EP
European Patent Office
Prior art keywords
unit
response
units
interrogation
display
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Withdrawn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
EP92112783A
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German (de)
English (en)
Inventor
Anthony D. Cross
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Individual
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Individual
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Filing date
Publication date
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Publication of EP0525697A1 publication Critical patent/EP0525697A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096708—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control
    • G08G1/096716—Systems involving transmission of highway information, e.g. weather, speed limits where the received information might be used to generate an automatic action on the vehicle control where the received information does not generate an automatic action on the vehicle control
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096733—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place
    • G08G1/09675—Systems involving transmission of highway information, e.g. weather, speed limits where a selection of the information might take place where a selection from the received information takes place in the vehicle
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/0962—Arrangements for giving variable traffic instructions having an indicator mounted inside the vehicle, e.g. giving voice messages
    • G08G1/0967—Systems involving transmission of highway information, e.g. weather, speed limits
    • G08G1/096766—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission
    • G08G1/096783—Systems involving transmission of highway information, e.g. weather, speed limits where the system is characterised by the origin of the information transmission where the origin of the information is a roadside individual element

Definitions

  • the invention relates to an arrangement with an interrogation unit and any number of response units for recognizing the identity of locations in areas in which effective navigation and safe movement within streets and main streets by emergency vehicles is required.
  • a safety device in which each road user is equipped with an interrogation device, answering devices are arranged at a defined distance from one another in the ceilings of sidewalks, between rails and the bank boundaries of waterways. With the help of the query devices, the information stored in the answering devices can be queried.
  • the answering devices are supplied with energy from the dispensing devices.
  • all interrogators are equipped with an energy transmitter.
  • the answering devices have an energy energy receiver.
  • the data received by the interrogation devices are forwarded to one or more control centers which are equipped with at least one computer for evaluating this information. (DE 33 45 707 Al)
  • Such safety devices have disadvantages.
  • the energy transmitter of the interrogator must be so strong that it can cause the stationary answering devices to respond.
  • Another disadvantage is that the interrogators pass on the received data to a central office, which evaluates the interrogated data.
  • An emergency vehicle that is equipped with the mobile interrogation device may be delayed in finding out how far it is from the street or house number searched.
  • the present invention has for its object to provide an arrangement of the type mentioned above, with the location of desired addresses from the emergency vehicle is easier, cheaper and without delay.
  • the interrogation units and the response units form a system by means of which the information stored in the stationary response units can be made visible on a display within the emergency vehicle.
  • the driver of the emergency vehicle therefore sees on his monitor the distance he is still from the address sought.
  • a constant flow of visible information relating to the respective position of the emergency vehicle can be shown on the display.
  • a query device can, for example, also be arranged on a person who is then able, using the query device and the many answering devices, to find an address in an environment unknown to them.
  • the arrangement according to the invention is constructed in such a way that the driver of an emergency vehicle is not disturbed with regard to his attention in road traffic by the optical information appearing on the display.
  • interrogators and responders each have their own power supply.
  • Input keypads are provided in both units with which the digital data stored in a memory can be deleted or supplemented.
  • Communication between the interrogation devices and the answering devices takes place via radio signals with a carrier frequency, to which the respective location information is modulated.
  • the incoming signal is demodulated in the interrogation device and the message content of the digitally encrypted information is shown on the display.
  • Fig. 1 shows a perspective view through the front window of a motor vehicle.
  • a query unit 2 which is in radio communication with answering units 4, is arranged below the dashboard.
  • a responder can, for example, be arranged on the mast for a street sign, on a house or on a particularly striking tree.
  • the navigation system according to the invention accordingly contains an interrogation device 2 in each emergency vehicle that has been equipped with it, which is in operative connection with any number of answering devices at fixed positions.
  • the interrogation device 2 can also be portable and can be carried by persons, especially children. As will be explained in detail later, both the driver of an emergency vehicle and a person equipped with a portable interrogation device can find their way within the range of the interrogation device.
  • the interrogation device 2 contains its current from the 12 volt car power supply, for example.
  • the power supply can also be provided, for example, by a battery, by a rechargeable battery, by solar cells or a combination of these power supply parts.
  • the response units 4 can also have their own power supply, which consist of solar cells, batteries or rechargeable batteries or connecting devices for the power supply of the house.
  • the answering devices 4 are able to receive and send signals within an adjustable range.
  • the interrogation unit 2 and the response units 4 within range communicate with one another according to an inquiry-response protocol, which will be described later.
  • FIG. 2 shows a block diagram of a preferred exemplary embodiment of an interrogation unit 2 according to the present invention.
  • the interrogation unit 2 contains a display 10, which is a liquid crystal display (LCD), a keyboard 20, which can be a conventional letter-number keyboard, a transceiver 30, a memory 50, which is preferably an electronic erasable and programmable only is readable memory (EEPROM), and a central processor 40, which is operable in two directions lines with all previously described peripheral devices in operative connection.
  • the central processor unit 40 can be any conventional microprocessor that is capable of coordinating the operation of the peripheral devices.
  • the transceiver 30 can be any conventional FCC transceiver capable of modulating or demodulating a carrier signal with a digital code.
  • the transceiver 30 preferably has an adjustable range. The operation of the transceiver 30 is controlled by the central processor unit 40 and the digital message, which is modulated onto the carrier wave, is fed from the memory 50 via the central processor unit 40.
  • the keyboard 20 is designed such that, for example, the driver of an emergency vehicle is able to establish a direct connection with the central processor unit 40 in order to control the navigation system and to program the EEPROM 50.
  • the display 10 is connected in a similar manner to the central processor unit 40 in order to enable a visible reading during the navigation of the vehicle.
  • the interrogation unit 2 operates in one of three operating modes. These include a main operating mode, a selected operating mode and an additional selected operating mode. The respective operating mode is selected by pressing a specific key within the keyboard 20.
  • the central processor unit 40 has access to a digital code which is stored in the EEPROM 50.
  • This code serves as a general request signal for all response units 4 within range to transmit a response.
  • the digitally coded signal selected from the EEPROM 50 is conveyed to the transceiver 30, where it is modulated onto a carrier signal. The modulated carrier signal is then sent out. Initially, the transmission of the main mode of operation of the digitally coded interrogation signal continues. Nevertheless, the central processor unit 40 limits the interval in which an answer comes. If the response unit 4 does not receive a response signal within five seconds, the central processor unit 40 causes the interrogation unit 2 to start interrupting the transmission of the interrogation signal at predetermined intervals, for example within five seconds or similar time intervals.
  • All response units 4 within the range of the query unit 2 transmit a response signal which contains digitally coded information which enables the respective response unit 4 to be identified or located.
  • the response signals of all response units 4 within the range are received by the interrogation unit 2.
  • the interrogation unit 2 will again switch on continuous question transmission after the reception of the interrogation signal from any answering unit.
  • the interrogation unit decodes the data content from the received response signal, and the data signal is shown on the display of the interrogation unit 2 in order to determine the respective position in the navigation.
  • the keyboard 20 is also equipped with a marked reset button, which interrupts the operation of the central processor unit 40 and initiates the continuous transmission of signals.
  • the operator can manually select a selected mode of operation at any time by operating the keyboard 20.
  • the operator can query unit 2 with selected criteria e.g. Program the name, number or position of a specific answer unit 4.
  • the interrogation unit 2 will then only show the data coming from the answering unit 4 on the display.
  • the operator can manually enter the selected mode of operation at any time using the keyboard 20.
  • the central processor unit 40 inserts an additional digital code into the interrogation signal, which, when transmitted, serves as an additional signal for the selected interrogation unit 4 in order to output additional information which lists the surrounding markings , describes a special object or a place where the selected answer unit 4 is located. Any number or variation of other information can be queried in this way.
  • the additional information may include additional help or instructions for the driver's emergency vehicle or other information.
  • the central processor unit 40 controls the entire operation of the interrogation unit 2.
  • the central processor unit 40 can be any microprocessor, even if in the exemplary embodiment shown as a central processor unit. Unit a switching element Motorola 68 HC 705 PLCC is used. As shown, the central processor unit 40 is equipped with a complementary clock generator 45.
  • the display 10 can be a conventional display with liquid crystal LCD with an eight-digit alpha-numerical output representation which is operated by the central processor unit 40 via the line PAO to PA7.
  • the central processor unit 40 controls the display 10 via the line (CS * E), the read / write line (R / W and activates the line AO).
  • the display 10 can be equipped with a wide control 15.
  • the EEPROM 50 may similarly be connected directly to the central processor unit 40 via lines PB3 to PB6.
  • the EEPROM 50 can be any conventional EEPROM, although a CAT 35 C 104 is installed in the present case.
  • the EEPROM 50 can be preprogrammed or it can be programmed by pressing the keyboard 20 after assembly.
  • EEPROM 50 is programmed with a digital code or digital code with S and coded in the interrogation signal, which causes an immediate response from the answering unit 4.
  • EEPROM 50 allows the storage of fixed data regardless of the power supply.
  • any conventional keyboard can be used as the keyboard, although a four by four keyboard matrix is preferred.
  • eight inputs are provided in the keyboard 20, which are connected directly to the central processor unit 40 via the lines KOOKI3.
  • the transceiver 30 communicates directly with the central processor unit 40 via a receive signal line PDO / RDI and a transmission data line PDI / TDO.
  • the transmit and receive circuit 30 can be any conventional transceiver capable of transmitting and receiving signals that are modulated with a digitally encoded signal on a carrier wave.
  • the transceiver 30 decodes the digital signal from the carrier wave.
  • the power level of the transmitter / receiver 30 is adjustable 5 to vary the maximum of the transmission range.
  • a lower transmission range increases the effectiveness of working in dense areas, such as in cities and vehicle fleets.
  • the carrier frequency of the transceiver 30 is immaterial as long as it can be effectively modulated with a digital code that is transferred from the EEPROM 50 by the central processor unit 40.
  • the transceiver should have an adjustable maximum range.
  • the monitoring clock 60 generates a simple monitoring clock function to monitor the time interval between the reception of a response signal from the response unit 4.
  • the monitoring clock causes About 60, the central processor unit 40 to begin the intermittent transmission if more than five seconds pass before the transceiver 30 receives the response signal. This prevents unnecessary transfers and the delay between transfers saves energy.
  • Fig. 4 is a block diagram of a preferred embodiment of a response unit 4 according to the invention.
  • the response unit 4 is constructed essentially similarly to the query unit 2 according to FIG. 2.
  • the response unit 4 contains a display 110, a keyboard 120, a transceiver 130, a memory 150 and a central processor unit 40, which also includes all peripheral devices described above communicated via two-way lines.
  • the components of the response unit 4 described above are preferably identical to the counterparts of the query unit 2.
  • the keyboard 120 is designed in such a way that it allows the operator to make direct contact with the central processor unit 140 for controlling the system and for programming the EEPROM 50.
  • the display 110 is similarly connected to the central processor unit 40 in order to enable a visible representation in the response unit 4.
  • the EEPROM 150 is connected directly to the central processor unit 140 via two-way lines.
  • the EEPROM 150 can be preprogrammed before it is assembled with the response unit 4. However, it can also be programmed via the keyboard 120 after assembly.
  • EEPROM 150 is programmed with the digital code or the digital codes, specifically corresponding to the response signal transmitted by the interrogation unit 2.
  • EEPROM 150 is also programmed with the location information, which forms a unit with each response unit 4 and with any desired additional information and instructions that the navigation can assist. EEPROM 150 also allows the storage of fixed data regardless of the power supply.
  • the transceiver unit 130 also communicates directly with the central processor unit 140 via a receive information line PDO / RD1 and a transmission information line PD1 / TDO.
  • the transceiver 130 may include any transmitter capable of transmitting and receiving information encoded in digital form on a carrier wave.
  • the transmitting and receiving unit 130 decodes the digital signal from the carrier wave.
  • the transmission range of the transmitter / receiver 130 is preferably 200 m.
  • the number of response units 4 which receive the query signal can be controlled by adjusting the transmission range of the query unit 2. This allows the operator to have a better choice in difficult areas.
  • the carrier frequency of the transceiver 130 in the response unit is immaterial as long as it can be effectively encoded with digitally encoded signals from the EEPROM 150.
  • the central processor unit 140 controls the operation of all the peripheral devices described above.
  • the central processor unit 140 is equipped with a complementary clock generator 145.
  • the EEPROM 150 is programmed in each answering unit 4 with a uniform binary identification code.
  • the EEPROM 150 can be programmed with additional information or desired instructions.
  • the programming may include navigation instructions, one-way street warning signs, road conditions, or even life saving tips.
  • EEPROM 150 can be programmed to include a description of the person, place, or thing that matters.
  • the EEPROM 50 is programmed in the interrogation unit 2 so that the uniform identification code received by each response unit 4 is correlated with the identity or the word of the respective response unit.
  • the central processor unit 40 After switching on, the central processor unit 40 initiates the interrogation unit 2 in the main mode of operation and an interrogation signal is continuously emitted by the transceiver 30.
  • the query signal according to the main mode of operation serves to excite all answering units 4 for the answer.
  • each transceiver unit While the response units 4 are out of range, the transmission part in each transceiver unit is kept in the standby status in the response units. The transmission part of each transceiver 130 remains in the stand-by state until an interrogation signal is received by the interrogation unit 2. All response units 4 within the range of the query unit 2 are immediately switched from their standby state to the response state for the query signal. Conversely, no response signal is received if there is no response unit 4 within the range.
  • the watchdog timer 60 monitors the time until a response signal arrives and when no response signal is received within five minutes the monitoring clock is interrupted. If the monitoring circuit 60 detects a clock failure, it will immediately activate the central processor unit 40 in order to record a delayed transmission mode of operation in which the interrogation signal is sent once every five seconds. This delayed transmission method helps to save energy.
  • this response unit 4 will receive the query signal, namely at the transceiver 130.
  • the central processor unit 140 outputs the transmission part of the transceiver 130 the standby position free.
  • the receiving query signal immediately causes the central processor unit 140 to transmit its unit location information, which is stored in the EEPROM 150, to the transceiver 130 so that it is retransmitted to the query unit 2.
  • the transceiver modulates the digital code onto the carrier signal and transmits the modulated response to the interrogation unit 2.
  • Each response unit 4 transmits a response at any time when it receives an interrogation signal from the interrogation unit 2.
  • the query-response protocol lasts until the query unit 2 is out of range.
  • each response unit 4 After each response unit 4 has transmitted its response signal, the stand-by state of the transceiver station 130 is reestablished until another query signal is received.
  • each answering unit 4 can be programmed in such a way that there is a sufficient delay in time between an interrogation signal and a response signal which is transmitted.
  • the unit location information is demodulated from the carrier signal by the transmitter / receiver 30 and the location information communicates with the central processor unit 40, which then transmits the location information to the display 10. This generates a visible indication of the respective location of the vehicle.
  • the query unit 2 can be programmed by the operator via the keyboard 20 in order to change over to the selected operation or the specially selected operation.
  • the central processor unit 40 immediately indicates to the operator via the display 10 that the operator should enter a specific number which is based on the name or location of the particular answering unit 4 relates.
  • the interrogation unit 2 transmits a general interrogation signal which urgently asks for a response signal from all the response units 4 within the range.
  • the response units 4 within range each transmit a coded response identification signal of their number, their name or their location.
  • the interrogation unit 2 receives all these response signals, but the interrogation unit 2 disregards all the response signals of the response units 4 which do not relate to the selection criteria of the signal entered by the operator.
  • the query unit 2 Upon receipt of the response from the response unit 4 relating to the selection criteria, the query unit 2 will preferably signal the fact that the selected response unit has been identified, either optically (for example by a flashing light), acoustically (for example by a signal tone) or by both. In addition, this match is visibly shown on the display 20.
  • the operator can select the particular operation.
  • the operator programs the query unit via the keyboard 20 with a selected name, a number or a position of the special response unit 4.
  • the transceiver 30 then encrypts the carrier signal with the identification code of the name, number or location, which is stored in the EEPROM 50.
  • the central processor unit 40 adds an additional digitally coded signal, which is used to move the selected response unit 4 to a rapid response to the information stored in the EEPROM 150.
  • the additional information stored in the EEPROM 150 can contain numbers or text material about the environment, ground conditions or descriptions of the respective object or the location of the selected response unit 4. Any number or variation of other instructions can also be stored in the EEPROM 150. This information can be helpful to the driver of the emergency vehicle.
  • An additional advantage of the invention is that the usability of the navigation network in the selected mode of operation can be further improved by further programming the query unit 2 in order to display the response from the selected response unit 4 and additionally the responses from the two response units 4 on the monitor, which are closest to the selected response unit 4. After receiving the response signal which is coded with the identification of the selected response unit 4 and the two neighboring response units 4 the location determination for all three selected response units 4 is shown in the query unit 2 on the display. This additional location information serves to ensure that no transmission error has occurred. It can also be determined whether the selected response unit 4 has failed.
  • An alternative embodiment of the present invention consists in using a single interrogation unit 2 as described in connection with a single response unit 4 as described, for example to find lost or lost children, objects or vehicles.
  • the response unit 4 is connected to the child, the animal or the vehicle, which enables the operator of the query unit 2 to find these objects.
  • the invention also allows multiple query units 2 to be used. These can then be used to determine the position of the response units 4 whenever these units reach the range of a respective query unit 2. If the area of the interrogation unit 2 is reduced, a more precise localization is possible.
  • FIG. 5 schematically shows two emergency vehicles 80 in connection with street lighting.
  • the invention can be modified in such a way that all traffic lights in the area in question are switched to red during use cases.
  • the answering units 4 within houses which are only shown schematically can be connected to an emergency call device 81; they can influence the answering unit in such a way that an auxiliary vehicle is alerted.
  • a flashing light can be switched on in front of the house in question.
  • the response units can also be connected to smoke detectors or similar devices.

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  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
EP92112783A 1991-07-25 1992-07-27 Dispositif pour la reconnaissance de l'identité d'emplacements Withdrawn EP0525697A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/735,834 US5221925A (en) 1991-07-25 1991-07-25 Position identification system

Publications (1)

Publication Number Publication Date
EP0525697A1 true EP0525697A1 (fr) 1993-02-03

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Application Number Title Priority Date Filing Date
EP92112783A Withdrawn EP0525697A1 (fr) 1991-07-25 1992-07-27 Dispositif pour la reconnaissance de l'identité d'emplacements

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0618557A1 (fr) * 1993-03-31 1994-10-05 PREH-WERKE GmbH & Co. KG Dispositif de transmission d'informations pour la circulation routière
AT412776B (de) * 2002-12-09 2005-07-25 Rosenbauer Int Ag Konfigurierbares elektronikmodul zum einsatz in feuerwehrfahrzeugen

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