Intelligent vehicle-highway system

• US 4,962,457 A
• Filed: 10/25/1988
• Issued: 10/09/1990
• Est. Priority Date: 10/25/1988
• Status: Expired due to Fees

• Current Assignee: Board of Regents of the University of Michigan (University of Michigan)
• Original Assignee: University of Michigan
• Inventors: Chen, Kan, Ervin, Robert D.
• Primary Examiner(s): Black, Thomas G.
• Application Number:
  US07/262,360
• Time in Patent Office: 714 Days
• Field of Search: 364/449, 364/443, 364/444, 364/436-438, 340/905, 340/991, 340/993, 340/996, 340/902, 340/903
• US Class Current: 701/200
• CPC Class Codes: G08G 1/096716 where the received information does not generate an automatic action on the vehicle control
• CPC Class Codes: G08G 1/096758 where no selection takes place on the transmitted or the received information
• CPC Class Codes: G08G 1/096775 where the origin of the information is a central station
• CPC Class Codes: G08G 1/096783 where the origin of the information is a roadside individual element
• CPC Class Codes: G09B 29/106 using electronic means

Abstract

An intelligent vehicle-highway system utilizes a transmitter installed on the vehicle for communicating with modules having memory elements for storing site-specific information, a receiver for receiving an enabling signal from the transceiver on the vehicle, and a transmitter for making the site-specific information available to the operator of the vehicle. The data storage system is installed in the vicinity of the roadway, such as alongside of the roadway, overhead of the roadway, or preferably embedded in the roadway itself so as to ensure communciation with vehicles within predetermined lanes. In a highly advantageous embodiment, the site-specific data can be changed by reprogramming an erasable memory with a memory programmer, which may be installed on a programming vehicle which is authorized to travel on the roadway for the purpose of reprogramming the data within the data storage systems. Such reprogramming may use access codes which prevent tampering with the stored data. Alternatively, reprogramming of the data storage systems can be performed with the use of local transmitters controlled by a centralized agency. The local transmitters can also communicate directly with the vehicles on the roadway to provide rapid communication of matters of interest to all, such as emergency situations.

Claims

1. A system for providing site-specific data to the operator of a vehicle moving on a roadway, the system comprising:

transceiver means installed on the vehicle, said transceiver means having mobile transmitter means for transmitting an enabling electromagnetic signal, and receiver means for receiving the site-specific data;

data storage means for storing the site-specific data, said data storage means being installed in the vicinity of the roadway for receiving said enabling electromagnetic signal and sending the site-specific data in response thereto

site-specific data transmitter means coupled to said data storage means for transmitting said site-specific data to said transceiver means; and

energy receiving means coupled to said data storage means for receiving said enabling electromagnetic signal transmitted by said transceiver means, and converting an electromagnetic energy in said enabling electromagnetic signal to electrical energy for energizing said site-specific data transmitter means.

2. The system of claim 1 wherein said data storage means further comprises erasable memory means for containing the site-specific data.

3. The system of claim 1 wherein there is further provided computer means coupled to said transceiver means for deciphering codes contained in the site-specific data received by said transceiver means.

4. The system of claim 3 wherein there is further provided display means for providing to the operator of the vehicle information corresponding to said deciphered codes.

5. The system of claim 3 wherein there are further provided a plurality of data storage means arranged along the roadway, said computer means being responsive to site-specific data received by said transceiver means from a one of said plurality of data storage means most recently passed by the vehicle.

6. The system of claim 1 wherein the site-specific data contains information pertaining to matters specific to the region in the vicinity where said data storage means is located and which may be of interest to the operator of the vehicle.

7. The system of claim 1 wherein there is further provided energy storage means coupled to said energy receiving means for storing said electrical energy.

8. The system of claim 1 wherein said enabling electromagnetic signal contains interrogation information for enabling transmission of said site-specific data via said site-specific data transmitter means.

9. A method of providing information pertaining to the characteristics of a predetermined geographical region which may be of interest to an operator of a vehicle being operated on a roadway in the predetermined geographical region, the method comprising the steps of:

storing the information pertaining to the characteristics in a data storage system arranged in the vicinity of the roadway;

transmitting a request signal in the form of electromagnetic energy from a transmitter installed on the vehicle to said data storage system, said request signal having an interrogator component and an enabling component;

receiving at a receiver in the vehicle a data signal containing said information stored in said data storage system, said information being responsive to said interrogator component of said request signal; and

converting said information in said data signal to a form understandable to the operator of the vehicle.

10. The method of claim 9 wherein prior to performing said step of receiving at a receiver in the vehicle there is provided the further step of data transmitting said data signal from a data transmitter coupled to said data storage system, said step of data transmitting being enabled in response to said enablement component of said request signal.

11. The method of claim 9 wherein said step of receiving comprises the further step of identifying said data storage system.

12. The method of claim 9 wherein said step of converting comprises the step of displaying said information.