Information recording system, information recording device, information recording method, and information collecting program
An accident judgment device ( 105 ) judges whether or not an accident has occurred based on a detection signal of an impact sensor ( 104 ). Upon judging that an accident has occurred, an image saving device ( 106 ) extracts an image within several seconds before and after occurrence of the accident from a ring buffer ( 103 ) to save the same in a save memory ( 107 ). Upon judging that the accident has occurred, an image-record requesting device ( 108 ) transmits an image-recording request to a drive recorder ( 10 ) of target vehicles existing in the vicinity of the accident spot. Upon receiving the image-recording request, an image saving device ( 106 ) of the drive recorder ( 10 ) on the target vehicle extracts the image within several seconds before and after occurrence of the accident from the ring buffer ( 103 ) to save the same into the save memory ( 107 ).
1. An information collecting server for collecting abnormal-status information representing a status upon occurrence of an abnormal state from information recording devices each including a ring buffer for repeatedly storing therein information and a save memory for storing information separately therefrom, said information collecting server comprising:
an information accumulation device that accumulates information;
a collection-request receiving device that receives collection request information requesting collection of information from any of said information recording devices via a communication network;
an on-server offer requesting device that transmits offer request information requesting offer of information to said information recording devices via the communication network if said collection-request receiving device receives the collection request information; and
an information registry device that allows said information accumulation device to store therein the abnormal-status information received from any of said information recording devices.
2. An information recording method for recording abnormal-status information representing a status upon occurrence of an abnormal state, said method comprising:
repeatedly storing, into a ring buffer in a first information recording device, status information representing a status of a vicinity of said first information recording device;
transmitting, from said first information recording device to a second information recording device, save request information requesting save of status information stored in said ring buffer;
extracting in said second information recording device, upon receiving the save request information from said first information recording device, the status information from said ring buffer; and
allowing a save memory in said second information recording device that saves information separately from said ring buffer to save the status information extracted from said ring buffer as abnormal-status information.
3. The information recording method according to claim 2 , further comprising:
transmitting collection request information requesting collection of information from said first information recording server to an information collecting server via a communication network;
transmitting, upon receiving the collection request information from said first information recording device in said information collecting server, offer request information requesting offer of information from said information collecting server to a second information recording device via the communication network;
extracting, upon receiving the offer request information in said second information recording device from said information collecting server, the abnormal-status information from said save memory in said second information recording device;
transmitting the abnormal-status information extracted from said save memory to said information collecting server via the communication network from said second information recording device; and
storing, in a database in said information collecting server, the abnormal-status information received from said second information recording device.
4. An information collecting program for collecting abnormal-status information representing a status upon occurrence of an abnormal state from information recording devices each including a save memory for storing information separately from a ring buffer that repeatedly stores therein information, wherein said program causes a computer including an information accumulation device for accumulating information to execute the processings of:
receiving collection request information requesting to collection of information from any of said information recording devices via a communication network;
transmitting, upon receiving the collection request information, offer request information requesting offer of information to said information recording devices via the communication network; and
allowing an information accumulation device to store therein the abnormal-status information received from said information recording devices.