WO2019073385A1 - System for remote detection of seatbelt use in a vehicle - Google Patents

System for remote detection of seatbelt use in a vehicle Download PDF

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Publication number
WO2019073385A1
WO2019073385A1 PCT/IB2018/057819 IB2018057819W WO2019073385A1 WO 2019073385 A1 WO2019073385 A1 WO 2019073385A1 IB 2018057819 W IB2018057819 W IB 2018057819W WO 2019073385 A1 WO2019073385 A1 WO 2019073385A1
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WIPO (PCT)
Prior art keywords
vehicle
belt
system
microcontroller
use
Prior art date
Application number
PCT/IB2018/057819
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Spanish (es)
French (fr)
Inventor
Joel Arnoldo DOMÍNGUEZ BELLÓN
Original Assignee
Casanova Rent Volks, S.A. De C.V.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to MX2017012949A priority Critical patent/MX2017012949A/en
Priority to MXMX/a/2017/012949 priority
Application filed by Casanova Rent Volks, S.A. De C.V. filed Critical Casanova Rent Volks, S.A. De C.V.
Publication of WO2019073385A1 publication Critical patent/WO2019073385A1/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00Safety belts or body harnesses in vehicles
    • B60R22/48Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06QDATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q90/00Systems or methods specially adapted for administrative, commercial, financial, managerial, supervisory or forecasting purposes, not involving significant data processing

Abstract

The present invention relates to the automotive industry, particularly it is related to the safety belts with which the vehicles are equipped, and to a system that determines from a distance the use of the safety belts. The system of the present invention is the only one that allows to monitor the state of a safety belt inside a vehicle, namely, whether it is open or closed. Any change in the status of the belt is reported in real time when interacting with GPS geolocation systems that allow reporting these changes to the platform that serves them. Its main distinction is the universality of the application, since there are no restrictions on the type of vehicle, model or brand of the means of transport in which you want to install, you can also install more than one system in a vehicle.

Description

 SYSTEM FOR REMOTE DETECTION OF THE USE OF THE SAFETY BELT

 IN A VEHICLE

FIELD OF THE INVENTION

The present invention relates to the automotive industry, particularly it is related to the safety belts with which the vehicles are equipped, and to a system that determines from a distance the use of the safety belts.

BACKGROUND OF THE INVENTION

Currently there is a considerable number of inventions related to different aspects of vehicle safety belts, some of these inventions are the following:

Patent MX 171527.

The present invention comprises a safety restraint system for a vehicle comprising: a safety belt that can be secured with a portion thereof by means of a buckle. The buckle means comprises a tab portion attached to a safety belt and a buckle portion to receive the tongue. A first sensor means is provided to generate a first signal indicating the closed and open condition. The system includes D-shaped ring means adapted to be rotatably mounted on a member of the vehicle, so that they receive in a slidable manner a shoulder belt portion of the safety belt and second sensor means, which act in conjunction with the vehicle. the D-shaped ring means for generating a second signal indicative of the movement of the D-shaped ring, and retractor means adapted to be secured to a structural member of the vehicle, including a receiving eye that is attached to one end of the belt of the vehicle. shoulder and a reversible electric motor, to contact and drive the receiving eye to rotate it in winding and reverse directions, in response to the winding and reverse control signals. This system additionally includes third means for generating a third signal indicating the motor torque, as well as logic control means for generating the winding and reverse control in response to the conditions of the first and second sensor means, including first ones. storage means that respond to a signal, to store a value indicative of the position of the D-shaped ring.

Patent MX272881. The present invention comprises methods, sensors and systems for detecting an occupant or its characteristics and for the surveillance of the safety belt. An occupant sensor with a complex arrangement of antennas or a simple simple antenna determines a characteristic of change or discharge of the antenna. By determining the change in voltage or current of the antenna as a function of time, any occupant can be detected or characterized. The sensor restricts the activation of the airbag or is used for another purpose. The same or a different occupant sensor is used for the safety belt warnings. A seat belt sensor determines if a seat belt is being used: the occupant sensor determines if the seat belt should be worn. A driver is warned when a seatbelt should be worn by an occupant. Patent Application MX / a / 2015/015550.

The present invention comprises a vehicle including a restraint system having a retractor, a strap, a tongue connected to the retractor through the strap and a buckle. The buckle is configured to receive the tongue. The tongue has a first sensor configured to emit a signal in response to the movement associated with the tongue and a first light. The buckle It has a second light. The vehicle further includes a retention control module configured to, in response to the signal, illuminate the first and second lights. A restraint system for a vehicle includes a seat assembly and a seat belt assembly. The seat assembly includes a buckle having a buckle sensor functionally connected to a light source of the buckle. The seat belt assembly is associated with the seat assembly and includes a retractor, a belt and a tongue having a light source of the tongue. The buckle sensor is configured in such a way that illumination of the light source of the tongue activates the buckle sensor and illuminates the light source of the buckle. A safety belt assembly includes a retractor, a belt, a tongue assembly and a buckle. The lattice is stored inside and connected to the retractor and is configured to extend through a portion of a seat. The tongue assembly is connected to the strap, disposed opposite the retractor, and includes a light. The buckle is configured to receive the tongue assembly in such a way that the buckle buckles and locks the tongue within the buckle.

Patent Application MX / a / 2015/002952. According to one aspect of the present invention, a monitoring system for a vehicle having a seat and a restraint with a belt Safety includes a belt length sensor coupled to the retention, a position sensor and a processor. The processor is in communication with the belt length sensor and the position sensor and is programmed to emit a signal based on a determination that an extended belt length is outside an acceptable range of belt length for an assigned category of size of the occupant using the position sensor. In one example, the processor may be programmed to determine a position of the belt using the position sensor and to assign the size category of the occupant based on a comparison of the determined position of the belt and a set of occupant size categories. corresponding to the predetermined positions of the belt. In addition, the processor may be programmed to allocate a belt length category based on a comparison of the extended belt length and a set of length categories corresponding to the predetermined lengths of the extended belt. Accordingly, the processor can determine whether the length of the extended belt is outside the acceptable range of belt length for the occupant size category by comparing the belt length category and the size category of the occupant. According to another aspect of the present invention, a vehicle, including a restraint having a safety belt, a first indicator associated with the strap, at least one adjustable safety device and a position sensor. The vehicle includes, in addition, a position monitor of the occupant in communication with the position sensor and programmed to assign a category of size of the occupant and determine a position of the occupant using information regarding a detected position of the first indicator. The vehicle includes a control system that is in communication with the monitoring system and is programmed to carry out an adjustment of the safety device based on the position and size of the occupant received from the occupant position monitor . According to another aspect of the present invention, a method for determining the proper use of the safety belt by the occupant of a vehicle includes determining an extended length of a seatbelt belt and assigning a size category of the occupant using the information received from a position sensor inside the vehicle. The method also includes accessing the memory data, including a corresponding range of extended belt lengths for the assigned size category and determining whether the extended belt length is within the corresponding range.

Patent Application MX / a / 2015/015937. The invention of the present patent application comprises a vehicle system that includes at least two sensors. A first sensor is configured to issue a child restraint signal that indicates a presence of a child restraint system. A second sensor is configured to output a belt tension signal representing a tension associated with a safety belt. A processing device is programmed to determine whether the child restraint system includes a child seat or a booster seat based on the child restraint signal and the belt tension signal.

According to the above description of the inventions contained in the aforementioned patents and patent applications, they have to refer to Systems to ensure the safety of the occupants of the vehicles, which comprise safety belts that are associated with different types of devices, among which are sensors that perform different functions, such as: sensors that generate signals to indicate that the belt is closed or open; sensors that restrict the activation of the airbag in vehicles; sensors that are used to warn about the use of the safety belt; sensors that determine if the safety belt should be worn; sensors configured to emit a signal in response to movement associated with the tongue and buckle; belt length sensors; sensors to emit a signal of containment of children and a sensor that emits a tension signal of the belt. In addition to the sensors there are other devices that are part of the systems described above. The previous inventions have as a common aspect that the systems act at the level of the vehicle, do not exceed this scope of operation; on the contrary, the present invention is different and novel with respect to the inventions of the State of the Technique because its structure works in an area that is not only that of a vehicle.

 It is therefore an object of the present invention to provide a system by which the remote sensing of the use of the seatbelt in a vehicle is realized.

 Another object of the present invention is to provide a system that intercommunicates with GPS global positioning equipment, among others, for the remote detection of the use of the seatbelt in vehicles.

Another object of the invention is to provide a system for remote detection of the use of the safety belt, which is used in any type of vehicle, of any model or brand of the means of transport in which it is desired to install. Still another object of the invention is to provide a method with a flexible design that can be used by most GPS devices on the market, and can be used to detect the connection of several safety belts at the same time.

DESCRIPTION OF THE FIGURES Figure 1. Shows a general block diagram in which the parts forming the system of the present invention are represented.

 Figure 2. Refers to a simplified diagram of the system of the present invention.

Figure 3. Illustrates the protection circuit contained in the voltage regulator. Figure 4. Refers to a filtering circuit in which a polished up configuration is shown. (Raise the output voltage of a logic circuit)

Figure 5. Shows the relationship of a rising edge with the position of the safety belt.

Figure 6. Shows the relationship of a falling flank with the position of the safety belt.

 Figure 7. Illustrates a rising edge that produces a disconnected notification.

 Figure 8. Illustrates a falling edge that produces a connected notification. Figure 9. Shows the architecture of the 8-bit microcontroller that uses a regulated 5V source

 Figure 10. Refers to the connection of the microcontroller with an interrupt controller.

 Figure 11. Illustrates system operation blocks.

Figure 12. Illustrates a circuit that shows the connection of the microcontroller with an integrated circuit and in turn with a serial port. Figure 13. Refers to the coding of the messages of the microcontroller to facilitate its interpretation by any GPS device.

Figure 14 shows a communication diagram between the GPS and a tracking platform.

DETAILED DESCRIPTION OF THE INVENTION

The main function of the system of the present invention in general terms is to detect when a safety belt is connected or disconnected, to notify the event to the GPS, which in turn communicates it to a GPS tracking platform. One of the main advantages of this system is that it allows remote detection of seat belt positioning and that this information can be used as a preventive method in accidents if it is used in conjunction with a GPS remote vehicle tracking system.

Figure 1 shows a block diagram that generally shows the parts comprising the system of the present invention, wherein (1) represents the automobile battery that is the initial source of energy for the system; a voltage regulator (2) that is connected directly to the vehicle's battery that provides 12V, the power to the voltage regulator is 12V and the output of the regulator is 5V, the regulator guarantees that they do not reach more than 5V to the microcontroller, which prevents the system from being damaged, a regulator Appropriate voltage is the L7805 integrated circuit, although others may be used; (3) represents a filtering circuit with a pull-up configuration for detecting the down and up flanks to indicate the positions that the safety belt adopts; (4) corresponds to an 8-bit microcontroller that uses a regulated 5V source and controls all system functions; (5) refers to an asynchronous serial port through which the microcontroller interfaces with any GPS device; (6) is any GPS device and (7) is the tracking platform with which the GPS communicates, through a TCP / IP protocol (Transmission Control Protocol / Internet Protocol). As before, Figure 2 shows a simplified diagram of the system of the present invention, which comprises the safety belt (8), which contains part of the system of the present invention, which comprises a microcontroller (4), which it communicates with a GPS device (6) and this in turn communicates with a tracking platform (7).

In the following, an even more detailed description of the system of the present invention is made. The voltage regulator (2) is preferably an integrated circuit L7805, it is designed in such a way that it has a protection circuit, the electrical diagram is shown in figure 3, it comprises: the voltage input (9) of 12V directly from the car's battery, as well as the voltage output (10) regulated at 5V and operating at 30 mA; a protection diode (11); a capacitor Cl (12) with a capacity of 25μΡ and a capacitor C2 (13) with a capacity of 100 μΡ; it also comprises a ground connection (14) of the circuit. The previous one is the description of the circuit that in addition to regulating the voltage, avoids shorts and damaging currents that can render the microcontroller useless; Figure 3 shows a short circuit going to ground (14).

In addition to the previous protection based on hardware, the microcontroller has internal protection, preferably from the Burr-Brown company that detects currents greater than 15mA and disconnects the microcontroller to avoid damage. Another means of protection is the software that prevents blocking conditions in the internal program and is based on an independent Watchdog counter (watchdog).

Below is the software routine that meets these conditions.

Figure imgf000015_0001

Detection of connection / disconnection of the belt. Filtering stage. The system of the present invention comprises a filtering circuit (3) which is shown in Figure 4, said circuit comprises an input of the regulated supply voltage of 5V (15); a switch (31) - (32) connected to the tab (16) of the belt (8) and the closure (17) of the belt (8); a polarization resistance Rl (18); and a Cl capacitor (19); as well as the current output (20), it also comprises a ground connection (21),

 As illustrated in Figure 4, the belt (8) is connected in a pullup configuration (to raise the tension), to detect the falling flanks that would indicate that the belt has been secured, as well as the rising flanks that would indicate the opposite state (the belt has been disconnected). The output of this filter is connected directly to pin 4 of the microcontroller (4) so that in the next stage a decision can be made based on the hardware interruption generated.

It is important to note that the resistor (18) and the capacitor or capacitor (19), indicated in the filtering circuit (3), act as a low-pass filter that eliminates noise due to the movement of the vehicle, this to avoid the signals of high frequency that produce false on / off events,

In sum, the conditions detected by the software when the microcontroller (4) is connected to the filtering stage are the following:

 A rising flank identified with the arrow (22), indicates that the belt has been disconnected, as shown in figure 5, likewise the belt parts: tab (16) and closure (17) that are separated, are shown, and the binary values 0 and 1.

A falling flank identified with the arrow (23) indicates that the parts of the belt (8) have been connected, i.e. the tongue 16 and the closure (17). The above is shown very clearly in figure 6, the binary values 0 and 1 are also shown.

 A rising edge, because the belt has been disconnected, produces a DISCONNECTED notification (24) in the microcontroller program; as illustrated in figure 7.

 A falling edge, because the belt has been connected, produces a CONNECTED notification (25) in the microcontroller program; as illustrated in figure 8.

 Architecture of the microcontroller. The system of the present invention is provided with an 8-bit microcontroller (4), of the ATMega family, preferably of the manufacturer Atmel, which is shown in figures 1, 2 and 9.

The operating characteristics of the microcontroller (4) are the following:

5v direct voltage

10mA average consumption

8MHz frequency

8kb of programmable FLASH memory

512 bytes of EEPROM

internal SRAM lkb In the same figure 9 the architecture of the microcontroller (4) is shown, which controls all the functions performed by the system for the remote detection of the use of the safety belt in a vehicle. The system was designed with the objective that the processing unit or microcontroller (4) does not determine or limit the operation of the system. The processing unit or microcontroller (4) can be replaced, interchangeable, by processors of other manufacturers and other models. The advantages are that since it is the most expensive component, if the existence of a component with a lower price is identified, the production of the system can be made more economical. In counterpart, if it is necessary to replace the component with a more powerful or efficient one (regardless of the cost) this is also possible.

 Interruption Circuit. The microcontroller (4) has the characteristic of attending the external interruptions associated with some of its pins. It is for this reason that the feature of the hardware, in particular of the pin with numbering 4, is used to capture changes in the signal related to the safety belt (8). Figure 10 shows the connection of the microcontroller (4) with an ISR (26), device for interrupting the service routine.

An ISR (also called an interrupt handler) is used when an interrupt request is invoked from a hardware device, handles the request and sends it to the microcontroller, interrupting the active process. When the ISR is completed, the process resumes.

In figure 11, blocks of the operation of the system are illustrated; wherein the first block (27) refers to the detection of the belt (8), which comprises the filtering circuit (3) and the interruption circuit (26); a second block (28) comprises the asynchronous serial port (29).

Communication circuit with GPS.

Serial port:

 Referring to the peripherals that the microcontroller (4) has, it interfaces with any GPS device that is able to communicate asynchronously by means of a serial port. The following are the data transmission speed settings that are compatible:

2400 baud

4800 baud

9600 baud

57,600 baud

115,200 baud

For the interface with the serial port (29) a conversion of digital to analog voltage signals, typical of the asynchronous communication through the serial port (29) preferably RS-232. The circuit performs this function preferably by means of the integrated circuit (30) MAX232.

Figure 12 shows the circuit illustrating the connection of the microcontroller (4) preferably ATMega 8 and the integrated circuit (30).

 According to the specification, the microcontroller (4) will generate two notification messages corresponding to the events indicated above. The encoding of the message is simple ASCII with line break termination, to facilitate its interpretation by any GPS device that offers the functionality of listening to messages through an asynchronous serial port.

In figure 13 the 2 notification messages are illustrated, the first one being disconnected (24,) in which the safety belt (8) is shown with the tab (16) and the closure (17) of the belt separated; and the second connected (25), in which the tab (16) and the closure (17) of the belt are shown together.

The final communication stage, shown in Figure 14, implies the way in which the GPS (6) makes the vehicle tracking platform (7) to which it is associated aware, the message that the belt ( 8) has been connected or disconnected. In the particular case of the platform (7) in which the implementation was made, the GPS maintains a constant communication with the platform through the TCP / IP communication protocol. The acronym TCP / IP refers to two network protocols, which are "Transmission Control Protocol" and "Internet Protocol" respectively. The vehicular tracking platform (7) is preferably Xentinel, in which by means of a monitor it can be observed whether the belt (8) is in closed or open position.

 The above is very useful for companies that for example have vehicle fleets and from a remote position it is determined if the safety belt (8) is open or closed, with the above the necessary safety measures are taken so that the drivers always wear the seat belt (8) closed. The system of the present invention is applied for other purposes besides the one described above; for example to meet a condition that is established with insurance companies to reduce policy cost or increase the insured amounts.

The system of the present invention is the only one that allows to monitor the state of a safety belt inside a vehicle, namely, whether it is open or closed. Any change in the status of the belt is reported in real time thanks to its ability to interact with GPS geolocation systems that allow reporting these changes to the platform that serves them. Its main distinction is the universality of the application, since there is no restrictions on the type of vehicle, model or brand of the means of transport in which you wish to install.

 One or more systems can be installed on any vehicle that has safety belts, to determine if the driver and / or passengers use it while driving.

 You can report with the help of a GPS tracking system, when a certain belt is opened or disconnected, and also when the belt closes again.

Claims

1. System for remote detection of the use of the safety belt in a vehicle, characterized in that it comprises an initial source of energy for the system that is the battery (1) of the vehicle; a voltage regulator (2) connected directly to the battery, the power to the voltage regulator is 12V and the regulator output is 5V; a protection circuit integrated to the voltage regulator, which in addition to regulating the voltage, avoids shorts and damaging currents that can render the microcontroller useless; a filtering circuit (3) for the detection of the connection / disconnection of the safety belt (8), said circuit comprises an input of the regulated supply voltage of 5V (15), a switch (31) - (32) connected to the tab (16) of the belt (8) and the closure (17) of the belt (8), a polarization resistor Rl (18) and a capacitor Cl (19), as well as the current output (20), which connects to the microcontroller, it also comprises a ground connection (21); an 8-bit microcontroller (4) that controls all the functions performed by the system for the remote detection of the use of the safety belt in a vehicle, is connected to the filtering circuit; an ISR device (26) interruption controller, connected to the microcontroller whereby the microcontroller has the characteristic of attending the external interruptions associated to some of its pins, in particular of the pin with numbering 4, to catch changes in the signal related to the belt security (8); a communication circuit of the microcontroller (4) which interfaces with any GPS device (6) that is capable of communicating asynchronously by means of a serial port, comprising an asynchronous serial port (29) preferably RS-232, an integrated circuit (30) that performs the conversion of digital to analog voltage signals, typical of asynchronous communication through the serial port (29), so communication is established from the microcontroller (4) to the integrated circuit (30) to the serial port (29) and to the GPS device (6); a vehicle tracking platform (7) that is associated with the GPS device, wherein said GPS device makes the vehicle tracking platform (7) to which it is associated aware, the message that the belt (8) has been connected or disconnected.
 2. - System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that the voltage regulator is preferably an integrated circuit L785, and the protection circuit comprises the voltage input ( 9) of 12V directly from the car battery, as well as the voltage output (10) regulated at 5V and operating at 30 mA; a protection diode (11); a capacitor Cl (12) with a capacity of 25μΡ and a capacitor C2 (13) with a capacity of 100 μΡ; it also comprises a ground connection (14) of the circuit.
3. - System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that the microcontroller (4) has internal protection, preferably Burr-Brown that detects currents greater than 15mA and disconnects the microcontroller to avoid damage.
 4. - System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that the belt (8) is connected in a configuration of polish up (raise the tension), to detect the flanks (23) indicating that the belt has been secured, by means of the tab (16) and the closure (17), and produce a CONNECTED notification (25) in the program of the microcontroller (4), as well as the flanks of rise (22) indicating the opposite state, the belt has been disconnected, and produce a notification of DISCONNECTED in the program of the microcontroller, the output of the filtering circuit is directly connected to pin 4 of the microcontroller (4).
 5. - System for remote detection of the use of seat belts in a vehicle, according to claim 1, characterized in that the resistor (18) and the capacitor or capacitor (19), function as a low-pass filter that eliminates noise due to the movement of the vehicle, to avoid the high frequency signals that produce false on / off events.
6. - System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that the microcontroller (4) is interchangeable and preferably of the family ATMega, Atmel, where the operating characteristics of the microcontroller are: 5v of direct voltage, 10mA of average consumption, 8MHz frequency, 8kb of programmable FLASH memory, 512 bytes of EEPROM, internal SRAM lkb.
 7. - System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that the serial port (29) is preferably RS-232 and the integrated circuit (30) is preferably MAX232 .
 8. - System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that the 2 messages generated by the microcontroller (4), disconnected (24) and connected (25), are encoded using simple ASCII with line break termination to facilitate its interpretation by any GPS device that offers the functionality of listening to messages through an asynchronous serial port.
 9. - System for remote detection of the use of seat belts in a vehicle, according to claim 1, characterized in that the vehicular tracking platform (7) is preferably Xentinel, in which a monitor can be used to observe if the Belt (8) is in closed or open position.
10. - System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that the GPS (6) maintains a constant communication with the platform (7) through the TCP / communication protocol. IP.
11. System for remote detection of the use of the seat belt in a vehicle, according to claim 1, characterized in that it is installed in any type of vehicle and more than one system can be installed per vehicle.
PCT/IB2018/057819 2017-10-09 2018-10-09 System for remote detection of seatbelt use in a vehicle WO2019073385A1 (en)

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Citations (2)

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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
US20120253862A1 (en) * 2011-03-31 2012-10-04 United Parcel Service Of America, Inc. Systems and methods for providing a fleet management user interface
US20130282228A1 (en) * 2012-04-23 2013-10-24 Geotab Inc. Even driven data acquisition switch

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "myGeoTab. Caracteristicas tecnicas del Software-Fleet Management Software – Vehicle Tracking Software", GEOTAB, 9 September 2015 (2015-09-09), XP055593281, Retrieved from the Internet <URL:https://web.archive.org/web/20150909225953/https:/www.geotab.com/fleet-management-software> [retrieved on 20181221] *

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