RU82495U1 - DIGITAL TACHOGRAPH - Google Patents

Abstract

1. A digital tachograph containing a microprocessor unit connected by data exchange buses with a non-volatile memory unit that serves to store information about vehicle motion parameters along the route, a signal receiver unit of satellite radio navigation systems, a timeline forming unit, an interface unit, a driver identification card reader vehicle, radiotelephone unit, control unit and indicator, while the microprocessor unit has a port for inputting pulse channel, characterized in that the microprocessor unit is configured to generate output pulse signals, the first group of which characterizes the current speed of the vehicle, and the second each meter of the distance traveled, while the microprocessor unit is equipped with an appropriate port for outputting the indicated pulse signals, and the unit is non-volatile memory is made in the form of a memory chip, in which the place for recording current information in the case of filling the memory is provided by erasing the first recording time information. ! 2. The digital tachograph according to claim 1, characterized in that the receiver unit of the signals of satellite radio navigation systems is an integrated receiver of GLONASS and GPS signals, providing navigation coordinates and timestamps. ! 3. The digital tachograph according to claim 1, characterized in that the reader unit of the vehicle driver identification card is made in the form of a contactless radio frequency reader.

Description

The utility model relates to the field of monitoring and recording the operation of vehicles and can be used in digital tachographs that record digitally the parameters of vehicle movement on the route, data about the route, as well as data and periods of work and rest of drivers with reference to the current time .

Known tachographs in which the registration of the current vehicle motion parameters is carried out in analog form by recording on paper chart disks data obtained from the odometer and / or speedometer, for example, the devices presented in the patents: [1] - US 3213459, U.S. C1.346-18, 10/19/1965; [2] - US 4083052, G01D 9/30, G01D 5/244, G01P 1/08, 11/08/1988; [3] - US 4782691, G01M 15/00, 08/08/1988. Such mechanical tachographs are secondary with respect to the odometer and speedometer, their main drawback is the limited set of functions performed (registration of mileage and speed) and low accuracy of information display.

Known tachographs in which registration of vehicle motion parameters is carried out in digital form on electronic data carriers, for example, as in devices presented in patents: [4] - US 4188618, G08G 17/00, 02/12/1980; [5] - US 4987541, G06F 13/00, 01/22/1991; [6] - EP 0191413, G07C 5/10, 08.20.1986; [7] - EP 1605410, G07C 5/08, 12/14/2005. The use of electronic data carriers instead of paper chart disks can significantly increase the volume and accuracy of the recorded information, makes it possible to register additional parameters characterizing the operation of the vehicle on the route, such as fuel consumption, engine speed, etc., and also makes it possible, if necessary, display current information about motion parameters on the display. At the same time, however, the digital tachographs presented in [4] - [7], as well as the mechanical tachographs presented in [1] - [3], do not provide for registration of the geographical position of the vehicle on the route of movement.

To enable registration of the geographical position of the vehicle, digital tachographs are equipped with satellite navigation, for example, as in the device presented in patent [8] - US 7002579, G06T 11/20, B60Q 1/00, H02H 7/06, G01P 3/42, G01D 9/00, 02/21/2006, and to enable remote data transmission to the control room, digital tachographs are additionally equipped with radio communications, for example, as described in patents [9] - EP 1118965, G07C 5/00, G07C 5/08, 25.07. 2001, [10] - RU 2136047 (C1), G07C 5/08, 08.27.1999.

A digital tachograph equipped with satellite navigation and radio communications, presented in the patent [10], is adopted as a prototype.

The digital tachograph, selected as a prototype, contains a microprocessor unit with a port for inputting pulsed signals from a motion sensor, for example, a track sensor. The microprocessor unit is connected by data exchange buses to a non-volatile memory unit, which serves to store information about the vehicle’s motion parameters on the route, a signal receiver unit for satellite radio navigation systems, which serves to obtain navigation coordinates, a timeline forming unit that performs the function of a calendar calendar, an interface unit, a vehicle driver identification card reader, a radiotelephone unit, a control unit and an indicator.

The receiver unit of the signals of satellite radio navigation systems operates on GLONASS or GPS signals.

The non-volatile memory unit uses a removable storage medium for recording information, for example, an optical compact disc with a one-time recording and multiple reading.

The indicator contains elements signaling to the driver that the limit of the information capacity of the replaced data carrier has been reached.

The interface unit allows the microprocessor unit to communicate with the vehicle’s CAN network to obtain the latest vehicle operating data, such as data on fuel consumption, engine speed or other data. In addition, the interface unit provides the ability to read at least part of the data recorded in the non-volatile memory unit, for example, for police control.

The radiotelephone unit is a GSM transceiver. The radiotelephone unit provides the ability to read data recorded in the non-volatile memory unit during remote supervisory control.

The vehicle driver identification card reader is a chip card reader.

The control unit contains a keyboard, allowing, in particular, to enter the identification number (PIN) of the driver.

The operation of the digital tachograph, selected as a prototype, begins with the input of the driver’s identification data, which uses the reader unit for the vehicle driver’s identification card and the keyboard of the control unit. These data are recorded in a non-volatile memory unit, where current information about the parameters characterizing the movement of the vehicle along the route, the coordinates of the route, the current time and date are also recorded with a certain frequency. If necessary, the information stored in the non-volatile memory unit can be read out through the interface unit or transmitted to the control room via a radio communication channel using the radiotelephone unit. When the limit of the information capacity of the replaced data carrier is reached, which the driver signals by using the indicator, the nearly used data carrier is removed and replaced with an empty one.

Thus, the digital tachograph, selected as a prototype, solves the problem of recording data characterizing the movement of the vehicle on the route, including data on the route and periods of work and rest of drivers, with reference to the current time, and also provides the ability to read these data and transmit them over the radio channel to the control room.

In this case, however, from the point of view of operational capabilities, the digital tachograph, selected as a prototype, has certain disadvantages due to the features of the technical solutions used in it. In particular, it does not provide for the possibility of docking with electronic anti-lock braking systems (ABS) and electronic speedometers, and the use of a replaceable storage medium such as an optical compact disk in a non-volatile memory unit complicates the device and negatively affects reliability. All this

narrows the operational capabilities of the prototype and limits the range of its possible use by a fairly narrow class of vehicles.

The technical result, the achievement of which the claimed utility model is directed, is the creation of a digital tachograph having, in comparison with the prototype, enhanced operational capabilities and scope.

The essence of the utility model is that in a digital tachograph containing a microprocessor unit connected by data exchange buses to a non-volatile memory unit, which serves to store information about vehicle motion parameters along the route, a signal receiver unit of satellite radio navigation systems, a timeline forming unit, an interface a unit, a driver unit for reading a vehicle driver’s identification card, a radiotelephone unit, a control unit and an indicator, while the micropro the processor unit has a port for inputting pulse signals, the microprocessor unit is configured to generate output pulse signals, the first group of which characterizes the current speed of the vehicle, and the second each meter of the distance traveled, while the microprocessor unit is equipped with an appropriate port for outputting the indicated pulse signals, and the non-volatile memory unit is made in the form of a memory chip, in which a place for recording current information in the case of filling the memory is provided by erasing the first-time recording information.

In preferred embodiments, an integrated GLONASS and GPS signal receiver is used as a receiver unit for satellite radio navigation system signals, providing navigation coordinates and timestamps, and the reader unit for the vehicle driver’s identification card is made in the form of a contactless radio frequency reader.

The essence of the claimed utility model is illustrated by the structural diagram of a digital tachograph.

The inventive digital tachograph contains a microprocessor unit 1 with port 2 for inputting pulse signals from an input sensor, for example a path sensor (not shown in the diagram). Microprocessor unit 1 is connected by data exchange buses to unit 3 of non-volatile memory, which serves to store information about parameter pax

the movement of the vehicle on the route, including data on the route and periods of work and rest of the drivers, with reference to the current time, unit 4 of the receiver of signals of satellite radio navigation systems, unit 5 for forming a timeline, interface unit 6, unit 7 for reading the driver’s identification card , block 8 radiotelephone, block 9 control and indicator 10.

The microprocessor unit 1 is configured to generate output pulse signals, the first group of which characterizes the current speed of the vehicle, and the second each meter of the distance traveled, and is equipped with a port 11 for outputting the indicated pulse signals.

The non-volatile memory unit 3 is made in the form of a memory microcircuit, in which the place for recording current information in case of filling the memory is provided by erasing the first-time recording information.

The indicator 10 is made in the form of a graphic display that allows you to play letters, numbers and symbols. The displayed information is selected using the on-screen menu.

The control unit 9 may include, for example, a keyboard through which the necessary commands and data are manually entered.

The interface unit 6 is configured to provide information exchange in CAN, RS232, IS09141 standards and is equipped with corresponding ports. Via the interface unit 6, the digital tachograph is connected to the vehicle’s on-board CAN network (CAN interface), as well as connection to external devices, for example, a personal computer and diagnostic equipment (RS232 and IS09141 interfaces).

The vehicle driver identification card reader 7 is made in the form of a contactless radio frequency reader working with contactless RFID cards.

Block 8 of the radiotelephone is a transceiver device operating in the GSM standard.

The receiver unit 4 of the satellite radio navigation system signals is an integrated receiver of GLONASS and GPS signals, providing navigation coordinates and timestamps, for example, similar to that presented in the patent [11] - RU 2146378 (C1), G01S 5/14, 10.03.2000.

Block 5 forming a timeline performs the function of a calendar clock. Its main element is a reference oscillator, for example, a crystal oscillator (not shown in the diagram), whose frequency is synchronized in accordance with the time stamps received from the signal receiver unit 4 of the satellite radio navigation systems. Based on the signals generated by the reference generator, a local time scale is formed, which is used to digitize the data recorded in block 3 of non-volatile memory.

The operation of the digital tachograph is as follows.

Through the port 2 and the corresponding port of the interface unit 6, the input pulse and digital signals characterizing the current state of the vehicle are received in the microprocessor unit 1. In addition, the microprocessor unit 1 receives data from the local time scale (current time and date), as well as navigation data and timestamps generated by the time scale generation unit 5 and the signal receiver unit 4 of the satellite radio navigation systems. Also in the microprocessor unit 1 from the unit 7 for reading the identification card of the driver of the vehicle receives driver data.

The microprocessor unit processes the input signals and data and, based on them, generates output information about the parameters characterizing the vehicle’s movement on the route, the coordinates of the route, the current time and date, as well as driver data recorded with a certain frequency in block 3 of non-volatile memory, and also performs the formation of output pulse signals arriving at port 11, the first group of which characterizes the current speed of the vehicle, and the second - each meter passed Uchi.

Pulse output signals are intended for use as input signals for electronic anti-lock braking systems (ABS) and electronic speedometers, while the digital tachograph becomes the primary device (sensor) with respect to the electronic speedometer and ABS system.

Recording of current information in the block 3 of non-volatile memory is carried out on the free space provided in the case of filling the memory by erasing the first time recording information. The amount of memory of block 3 of non-volatile memory is selected, for example, from the condition of storing information recorded over the last 365 working days.

If necessary, the information accumulated in block 3 of non-volatile memory is transmitted using block 8 of the radiotelephone via cellular communication to the control room. Transmission is in batch mode.

The indicator 10 displays the monitored parameters of the tachograph, as well as - by the appropriate command - displays the recorded data stored in block 3 of non-volatile memory.

The formation of control commands and manual data entry is carried out from the remote control unit 9 control.

Data stored in the non-volatile memory unit 3 can also be read using a personal computer connected to the corresponding port of the interface unit 6.

Diagnostics of the digital tachograph is carried out using diagnostic equipment connected to the corresponding port of the interface unit 6.

Thus, the claimed digital tachograph fully solves the problem of recording data characterizing the movement of the vehicle on the route, including data on the route and periods of work and rest of drivers, with reference to the current time, and also provides the ability to read these data and transmit them via radio channel to the control room.

At the same time, it is possible to operate a digital tachograph with different input signals, which allows it to be used in different types of vehicles. It is also possible to dock the digital tachograph with electronic ABS systems and electronic speedometers, in relation to which the digital tachograph acts as a primary device (sensor), which generates the pulse signals necessary for their operation. The implementation of unit 4 of the receiver of signals of satellite radio navigation systems in the form of an integrated receiver of GLONASS and GPS signals ensures the reliability of location, including on rough terrain and in large settlements, and the implementation of unit 3 of non-volatile memory in the form of a memory chip and unit 7 for reading the driver’s identification card means in the form of a non-contact radio frequency reader simplifies the design of a digital tachograph and positively affects its reliability. All this extends, in comparison with the prototype, the operational capabilities of the digital tachograph and the scope of its possible

application of application, which makes it promising for wide practical use.

Information sources

1. US 3213459, U.S. C1.346-18, publ. 10/19/1965.

2. US 4083052, G01D 9/30, G01D 5/244, G01P 1/08, publ. 11/08/1988.

3. US 4782691, G01M 15/00, publ. 11/08/1988.

4. US 4188618, G08G 17/00, publ. 02/12/1980.

5. US 4987541, G06F 13/00, publ. 01/22/1991.

6. EP 0191413, G07C 5/10, publ. 08/20/1986.

7. EP 1605410, G07C 5/08, publ. 12/14/2005.

8. US 7002579, G06T 11/20, B60Q 1/00, H02H 7/06, G01P 3/42, G01D 9/00, publ. 02.21.2006.

9. EP 1118965, G07C 5/00, G07C 5/08, publ. 07/25/2001.

10. RU 2136047 (C1), G07C 5/08, publ. 08/27/1999.

11. RU 2146378 (C1), G01S 5/14, publ. 03/10/2000.

Claims (3)

1. A digital tachograph containing a microprocessor unit connected by data exchange buses with a non-volatile memory unit that serves to store information about vehicle motion parameters along the route, a signal receiver unit of satellite radio navigation systems, a timeline forming unit, an interface unit, a driver identification card reader vehicle, radiotelephone unit, control unit and indicator, while the microprocessor unit has a port for inputting pulse channel, characterized in that the microprocessor unit is configured to generate output pulse signals, the first group of which characterizes the current speed of the vehicle, and the second each meter of the distance traveled, while the microprocessor unit is equipped with an appropriate port for outputting the indicated pulse signals, and the unit is non-volatile memory is made in the form of a memory chip, in which the place for recording current information in the case of filling the memory is provided by erasing the first recording time information. 2. The digital tachograph according to claim 1, characterized in that the receiver unit of the signals of satellite radio navigation systems is an integrated receiver of GLONASS and GPS signals, providing navigation coordinates and timestamps. 3. The digital tachograph according to claim 1, characterized in that the reader unit of the vehicle driver identification card is made in the form of a contactless radio frequency reader.