KR20000054404A - System for managing vehicle-state - Google Patents

Abstract

PURPOSE: A system for managing a vehicle state is provided so that a probe vehicle can be efficiently managed at a small cost, by forming a communication link along the road, and collecting and analyzing state information of the probe vehicle by the communication link. CONSTITUTION: A first memory unit(100) stores a special identifier of a probe vehicle. A plurality of vehicle state information sensors(S1¯Sn) are disposed at the probe vehicle for sensing its state. A first controller(200) is engaged with the vehicle state information sensors(S1¯Sn) for collecting state information of the probe vehicle, reading the special identifier from the first memory unit(100) and generating a packet data according to the information. A transmitting/receiving unit(300) is disposed at the probe vehicle for modulating the packet data into a high frequency transmission signal, and demodulating a received signal. A plurality of relay units are disposed along the road at certain intervals, for forming a communication link with the transmitting/receiving unit(300), and relaying the high frequency transmission signal through a wire channel. A central management unit(400) demodulates the relayed signal into the packet data, analyzes state information of the probe vehicle according to the packet data, and outputs an analysis result to the transmitting/receiving unit(300). A display unit(500) displays information from the central management unit(400).

Description

System for managing vehicle-state

The present invention relates to a vehicle state management system, and more particularly, to a vehicle state management system capable of managing a probe vehicle by grasping in real time state information of a probe vehicle, which is a management target for driving along a road. .

Recently, as the industry develops, the spread of vehicles has increased. However, as the number of vehicle supply increases rapidly compared to the total proportion of the road, the congestion of the road is getting worse day by day and the time spent on the road is increasing. This causes many economic losses not only for individuals but also for the country. In order to reduce such economic loss and efficiently use road resources, a global positioning system (GPS: business card, GPS) has been developed and applied to the traffic information field. Therefore, a traffic information collection system for collecting traffic flows for the entire road by time is provided.

The traffic information collection system using the GPS digitizes the locations of roads and major facilities on a map and stores them in the disk, and a plurality of satellites and probe vehicles, that is, GPS receivers, are arranged on a stationary orbit 20,200 km from the ground. When the mounted vehicle transmits and receives a predetermined code signal, the position information of the probe vehicle is collected, and the collected position information is matched with the numerical position information stored in the disk, and thus, the current position and the target point are reached. It is characterized by providing the driver with various types of traffic information such as driving time and driving speed for each link for the distance and the road as a whole. Herein, the probe vehicle refers to a vehicle equipped with an antenna required for transmitting and receiving a GPS receiver and a radio signal.

The traffic information collection system using the GPS calculates and manages the average driving time and speed of the link by time zone including the location information of the probe vehicle in the central control station, thereby identifying the traffic flow of the road, and providing the driver with the traffic flow. You can do it smoothly.

However, the traffic information collection system using the GPS can collect and provide the required traffic information, but in addition to the vehicle status information, that is, the average driving time of the link and the speed of the vehicle, the fuel supply status of the vehicle, speeding, differential ( Since the vehicle state, such as the lighting state of the headlight, taillight, etc., is not known, the vehicle state cannot be managed.

Therefore, in order to solve this problem, it would be desirable to implement a system that can manage the vehicle status using the GPS.

However, when the vehicle condition management system is implemented using the GPS, the GPS receiver should be mounted in a GPS receiver vehicle capable of informing the driver of actions appropriate to the current state of the vehicle by collecting and analyzing information about the condition of the vehicle in real time. Given that the price of the GPS receiver is quite high, the total number of vehicles equipped with it increases the total investment cost (GPS receiver x number of vehicles with the GPS receiver. Therefore, a vehicle condition management system with excellent price to performance ratio is required. .

In order to solve the above problems, an object of the present invention is to form a communication link around the road, and collect and analyze the state information of the probe vehicle traveling along the communication link in real time to quickly take the necessary actions for the current state of the probe vehicle. The present invention provides a vehicle condition management system that can efficiently manage a probe vehicle at a lower cost.

Vehicle state management system of the present invention for achieving the above object comprises a first memory unit for pre-store the unique identifier of the probe vehicle; A plurality of vehicle state information detection sensors detecting a vehicle state of the probe vehicle; A first control unit configured to collect state information of a probe vehicle in cooperation with the plurality of vehicle state information detection sensors, read a unique identifier from the first memory, and generate packet data together with the collected vehicle state information; A transceiver configured to be mounted on a probe vehicle to modulate and transmit packet data provided by the first controller into a high frequency transmission signal, and to demodulate the received signal and supply the demodulated signal to the first controller; A plurality of relays installed at predetermined intervals around a road to form a communication link with the transceiver, and receiving a high frequency transmission signal from the transceiver to relay through a wired channel; Demodulating the signals relayed by the plurality of relays into original packet data, analyzing the state information of the probe vehicle from the demodulated packet data, and packet data corresponding to the instruction and guide information according to the analyzed result. Central management unit for generating and transmitting to the transceiver through the plurality of relays; And a display unit coupled to the first control unit for converting and displaying information transmitted from the central management unit into text.

1 is a conceptual diagram illustrating a vehicle state management system according to the present invention;

2 is a block diagram illustrating a vehicle state management system according to the present invention;

FIG. 3 is a block diagram illustrating an embodiment of a transceiver shown in FIG. 2.

Explanation of symbols on the main parts of the drawings

100; A first memory unit 200; First control unit

300; A transceiver 310; Local oscillation department

320; A transmitter 340; Receiver

360; Transmission and reception switching unit 400; Central Management Department

401; Communication interface 402; Command input section

404; Second memory section 406; Second control unit

500; Display unit 600; Voice output section

S1-Sn; Vehicle condition sensor

Hereinafter, with reference to the accompanying drawings a specific embodiment of the present invention will be described in detail.

1 is a conceptual diagram illustrating a vehicle condition management system according to the present invention. Reference numeral 1 denotes a probe vehicle 2 mounted along an road with an antenna AN and a high frequency transceiver 1, RY1 to RYn. Denotes a plurality of repeaters which are installed at predetermined intervals around the road to form a communication link with the high frequency transceiver 1 to relay communication between the high frequency transceiver 1 and a central management station (not shown).

According to an embodiment of the present invention, the plurality of repeaters RY1 to RYn transmit and receive with the high frequency transceiver 1 through a wireless channel, and transmit and receive with a central management station (not shown) through a wired channel.

2 is a block diagram illustrating a vehicle state management system according to an embodiment of the present invention, the first memory unit 100 pre-stored the unique identifier of the probe vehicle, and is mounted on the probe vehicle The first memory unit 100 collects state information of the probe vehicle in cooperation with a plurality of vehicle state information detection sensors S1 to Sn and a plurality of vehicle state information detection sensors S1 to Sn for detecting a vehicle state. A first controller 200 for reading a unique identifier from the first identifier and generating packet data based on the read unique identifier and the collected vehicle state information, and the packet provided in the second controller 200 in a probe vehicle. Transceiving unit 300 modulates the data into a high frequency transmission signal and transmits it through the antenna ANT, demodulates the signal received through the antenna ANT and supplies it to the first control unit 200, and a predetermined area around the road. At intervals of And a plurality of relays RY1 to receive the state information of the vehicle transmitted from the transmission receiver 300 through the plurality of antennas ANT1 to ANTn and relay through the wired channel CH. RYn) and signals relayed by the plurality of relays RY1 to RYn are demodulated into original packet data, and the state information of the probe vehicle is analyzed from the demodulated packet data, and the instruction and The central management unit 400 generates a packet data corresponding to the guide information and transmits the packet data to the transmission / reception unit 300 through the plurality of relay units RY1 to RYn and the first control unit 200. The display unit 500 converts and displays instructions and guide information transmitted by the text.

The plurality of vehicle state information detection sensors S1 to Sn are sensors mounted on each part of the vehicle to detect information on the state of the vehicle. Typically, the detected vehicle state information is ECU (Electronic Control) which is an electric device control system. Unit).

According to an embodiment of the present invention, the first control unit 200 preferably further includes a voice output unit 600 for converting and outputting instructions and guide information transmitted from the central management unit 400 into voice.

According to an embodiment of the present invention, the transceiver 300 is, as shown in Figure 3, the local oscillator 310 is controlled by the first control unit 200 to generate an oscillation signal of a predetermined frequency, and the first The packet data supplied from the control unit 200 is mixed with the oscillation frequency of the local oscillator 310, modulated, amplified to a level suitable for transmission, and then outputted by the transmitter 320 and the signal transmitted from the central management unit 400. Detects the electric field level, receives signals transmitted from the plurality of relays RY1 to RYn, amplifies them to a predetermined level, mixes the amplified signals with the oscillation signals of the local oscillator 310, and outputs the demodulated signals. The receiver 340 and the transmitter 320 and the receiver 340 is coupled to the transmission and reception switching unit 360 for switching the transmission and reception.

The transmitter 320 modulates and modulates the packet data supplied from the first controller 200 to the oscillation signal of the local oscillator 310 and modulates the modulated signal to a predetermined level and outputs the modulated signal. A transmission amplifier 320b and a transmission power amplifier 320c for power amplifying and outputting the amplified signal to a level suitable for transmission.

The receiving unit 340 oscillates the signal amplified by the reception amplifier 340a and the receiver amplifier 340a for receiving and amplifying the signals transmitted from the plurality of relays RY1 to RYn through the antenna AN. Demodulate the original packet data by mixing with the frequency, and detect the level of the demodulator 340b for supplying the demodulated packet data to the first control unit 100 and the received signal amplified by the reception amplifier 340a. And an analog-to-digital converter 240e which converts the output signal of the electric field level detector 340c into a digital signal and supplies the digital signal to the first control unit 200.

Meanwhile, according to an embodiment of the present invention, the central management unit 400 is coupled to the plurality of relay units RY1 to RYn by a wired channel CH and transmitted through the plurality of relay units RY1 to RYn. A communication interface (I / F) 401 for demodulating and converting the signal to the original packet data transmitted from the probe vehicle, a command input unit 402 for inputting an external command, and a management application program ( 302, which is operated by the command input unit 402 and analyzes the state information of the probe vehicle from the restored packet data in response to an external command input through the command input unit 402, and generates instructions and guide information corresponding to the analyzed result. And a second control unit 406 and a second memory unit 404 for storing a resultant data and constructing a database.

Referring to Figures 2 and 3 the operation of one embodiment of the present invention configured as described above are as follows.

First, when a probe vehicle equipped with a transceiver according to an embodiment of the present invention starts and travels along a road on which a plurality of relay units are installed, the first control unit 200, which is an electric device control device of the vehicle, may be provided to each part of the vehicle. Collected vehicle state information by receiving signals detected by a plurality of mounted vehicle state detection sensors S1 to Sn, for example, a vehicle speed sensor, a fuel amount detection sensor, a door opening / closing sensor, a plurality of differential sensors, and the like and collecting the vehicle state information. The data is converted into data along with a unique identifier (ID) of the vehicle previously stored in the first memory unit 200 to generate packet data, and the packet data is supplied to the transceiver 300.

In the transceiver 300, the modulator 320a of the transmitter 300 generates a modulated signal by mixing the packet data with an oscillation signal of a predetermined frequency provided by the local oscillator 310. In this case, the local oscillator 310 generates an oscillation signal having a predetermined frequency and supplies the oscillation signal to the modulator 320a in response to the control signal provided by the first controller 200.

The modulated signal from the modulator 320a is supplied to the transmit amplifier 320b and amplified to a predetermined level. The modulated signal 320a is then amplified to a sufficient intensity for transmission by the transmit power amplifier 320c and then through the antenna ANT. It is sent out. In this way, the signal output from the transmitter 320 is transmitted to the public network through the transmission and reception switching unit 260.

In the plurality of relays RY1 to RYn, the relay unit closest to the current position of the probe vehicle receives a signal transmitted from the transceiver 300, and the received signal is transmitted through the wired channel CH to the central management unit 400. To be relayed.

In the central management unit (400), the communication interface (I / F) 401 demodulates, receives, and converts the signals received through the wired channel (CH) to the original packet data. This is supplied to the second control unit 406.

According to an embodiment of the present invention, the second control unit 406 is operated by a management application, thereby analyzing the unique identifier (ID) and vehicle state information of the probe vehicle from the packet data, and analyzing the analysis result. The data is stored in the second memory unit 404 to build a database of the state information of the probe vehicle and to display it on the display unit 500 of the computer.

Therefore, the operator operating the vehicle condition management system of the present invention grasps vehicle state information of the probe vehicle to be managed through the display device, and sends necessary instructions, that is, instructions and guidance, to the command input unit 402 corresponding to the analysis result. It can be quickly taken in accordance with the command input by the.

For example, as a result of analyzing the vehicle state information of the probe vehicle to be managed, if it is determined that the air conditioner vehicle state information is traveling above the prescribed speed, the deceleration instruction to reduce the speed is taken. If it is determined that the fuel is low, it is instructed to refill the fuel and to take a guide on the location of the gas station close to the current position of the probe vehicle.

The instruction and guidance information provided by the second control unit 406 is in the form of packet data, and after the serial / parallel conversion and modulation process in the communication interface 401, the plurality of relay units RY1 to RY1 through the wired channel CH. RYn), and the plurality of relay units RY1 to RYn amplify and frequency-modulate the modulated packet data corresponding to the instruction and guidance information provided by the central management station 400 and transmit the same to the public network.

Then, the transmitter / receiver 300 of the probe vehicle receives the signals transmitted from the plurality of relays RY1 to RYn through the antenna ANT. The received signal is supplied to the reception amplifier 240a via the transmission / reception switching unit 260.

The reception amplifier 340a amplifies the signals transmitted from the plurality of relays RY1 to RYn to a set amplification level, and then supplies them to the demodulator 340b and the electric field level detector 340c, respectively.

In this case, the local oscillator 310 generates an oscillation signal having a predetermined frequency in response to the control signal provided by the first controller 200 and supplies the oscillation signal to the demodulator 340b, so that the demodulator 340b receives the reception amplifier. The signal amplified by 340a is mixed with the oscillation signal of the local oscillator 310 to demodulate the original packet data and supply it to the first controller 200.

On the other hand, the electric field level detector 340c detects and outputs the electric field strength of the signal amplified by the reception amplifier 340a.

Since the output signal of the electric field level detector 340c is an analog signal, the digital signal is converted by the analog-digital converter 340d and then supplied to the first controller 200.

Then, the first control unit 200 determines the strength of the electric field supplied from the electric field level detection unit 340c, and if the strength of the electric field is less than or equal to a preset level, the first control unit 200 ignores the signal supplied from the demodulator 340b. If the intensity of the electric field is greater than or equal to a predetermined level, the display unit 500 controls the display unit 500 to convert the instructions and guide information transmitted from the central management unit 400 into characters and display the converted information.

In addition, according to another embodiment of the present invention, the first control unit 200, when the intensity of the electric field supplied from the electric field level detection unit 340c is a predetermined level or more, the instruction and guide information transmitted from the central management unit 400. The voice output unit 600 is controlled to convert and output voice.

Accordingly, the present invention forms a communication link for terrestrial communication in the vicinity of the road, and collects and analyzes the state information of the probe vehicle traveling along the communication link in real time from a central control station located at a remote location, and the current state of the pro-bu vehicle. By quickly taking the necessary steps, the probe vehicle can be efficiently managed at a lower cost.

Claims (6)

A first memory unit which pre-stores the unique identifier of the probe vehicle; A plurality of vehicle state information detection sensors mounted on the probe vehicle to detect a state of the vehicle; A first control unit configured to collect state information of a probe vehicle in cooperation with the plurality of vehicle state information detection sensors, read a unique identifier from the first memory, and generate packet data together with the collected vehicle state information; A transceiver configured to be mounted on a probe vehicle to modulate and transmit packet data provided by the first controller into a high frequency transmission signal, and to demodulate the received signal and supply the demodulated signal to the first controller; A plurality of relays installed at predetermined intervals around a road to form a communication link with the transceiver, and receiving a high frequency transmission signal from the transceiver to relay through a wired channel; Demodulating the signals relayed by the plurality of relays into original packet data, analyzing the state information of the probe vehicle from the demodulated packet data, and packet data corresponding to the instruction and guide information according to the analyzed result. Central management unit for generating and transmitting to the transceiver through the plurality of relays; And And a display unit coupled to the first control unit for converting and displaying information transmitted from the central management unit into text. The method of claim 1, And a voice output unit coupled to the control unit for converting and outputting guide and instruction information transmitted from the central management unit into voice. The method of claim 1, The transmitter / receiver comprises a local oscillator for generating an oscillation signal of a predetermined frequency in response to a control signal from the controller, and modulates the packet data supplied from the controller with the oscillation signal of the local oscillator for amplification to a level suitable for transmission. Detects the electric field level of the transmitting unit and the signal transmitted from the central management unit, receives the signals transmitted from the plurality of relay units, amplifies them to a predetermined level, and converts the amplified signals into oscillation signals of the local oscillation unit. And a transmission and reception switching unit for combining and demodulating and outputting the demodulation unit and the transmission unit and the reception unit to switch transmission and reception. The method of claim 3, wherein The transmitter comprises a modulator for mixing and modulating the packet data supplied from the controller to the oscillation signal of the local oscillator, a transmission amplifier for amplifying and outputting the modulated signal to a predetermined level, and suitable for transmitting the amplified signal. Vehicle power management system comprising a transmission power amplifier for outputting power amplification by the intensity. The method of claim 3, wherein The receiving unit receives a signal transmitted from the plurality of relays and receives and amplifies the signal, and the amplified signal received by the reception amplifier mixed with the oscillation signal of the local oscillator and the original packet data transmitted from the central management unit A demodulator for demodulating the signal data and supplying the demodulated packet data to the first controller, an electric field level detector for detecting and outputting a level of the received signal amplified by the reception amplifier, and an output signal of the electric field level detector. And an analog-to-digital converting unit converting the digital signal to the first control unit. The method of claim 1, The central management unit is connected to the plurality of relay units by a wired channel, and a communication interface for demodulating, serially and parallel converting signals transmitted through the plurality of relay units to restore original packet data transmitted from the probe vehicle, and an external command. A command input unit for inputting a signal, and a vehicle state information transmitted from the plurality of relay units in response to an external command inputted through the command input unit and operated by a predetermined management application program, and corresponding to the analyzed result; And a second controller configured to generate an instruction and guide information, and a second memory configured to construct a database by storing data resulting from analyzing the vehicle status information.