Vehicle Communications Module
A self-contained antenna module for attachment to a vehicle exterior, includes a connector for attaching to an existing wired feed connector to an entertainment head unit, a cellular communications module, e.g. a 3G/4G module configured to provide a local wireless internet access point, and a renewable energy source for generating independently of the vehicle's own power source electrical energy for charging an on-board battery which provides power to the cellular communications module.
This invention relates to a vehicular communications module for providing a wireless Internet data connection for use within the vehicle.
BACKGROUND OF THE INVENTIONThe provision of a wireless internet service in vehicles is currently very limited to high-end providers, but is likely to increase in the coming years.
The current technology requires the provision of a 3G/4G modem/router with associated antenna mounted on the vehicle's roof and usually combined with a radio and GPS receiver. The modem/router, and other components, requires power which is drawn directly from the vehicle's power loom from the battery which passes via a wire to the vehicle's roof.
This means that there is currently no straightforward way to retro-fit a wireless communications module onto a car. The fact that power is drawn from the battery may limit the life of the battery over time and there is the potential for a flat battery if the wireless communications module is overused. It may also have a long-term effect on the environment.
SUMMARY OF THE INVENTIONA first aspect of the invention provides a vehicle communications module comprised of a connector for attaching the module to an external part of the vehicle, a cellular communications module for providing wireless Internet data connectivity, e.g. using 3G/4G, and a renewable energy source configured to provide power to the cellular communications module when mounted to the vehicle exterior.
The connector may be configured to be attached to the existing aerial connector on a vehicle exterior.
The renewable energy source may be a wind turbine and/or a solar cell. The renewable energy unit may be a wind power harvester. A harvesting energy unit can harvest solar and kinetic energy and covert to electrical energy. The powering may be by means of a battery which stores the energy from the renewable energy unit and powers the receiver, communications module and transmitter when required, at a later point in time.
The cellular communications module may be configured to be initiated automatically upon detecting a predetermined signal issued by the vehicle over a wireless channel.
The module may further comprise a non-cellular wireless communications module, e.g. a Bluetooth module, for communicating with a remote terminal.
The module may further comprise a digital radio receiver, e.g. a DAB receiver connected to an onboard antenna for receiving and decoding digital radio channels, e.g. DAB channels, and for transmitting said channels using an analogue, e.g. FM, frequency down a wired feed to the vehicle's internal head unit. In the context of this specification, digital radio means any form of digitally modulated radio including but not limited to DAB, DAB+ and satellite radio.
A second aspect provides a self-contained antenna module for attachment to a vehicle exterior, comprising a connector for attaching to an existing wired feed connector to an entertainment head unit, a cellular communications module, e.g. a 3G/4G module configured to provide a local wireless internet access point, and a renewable energy source for generating independently of the vehicle's own power source electrical energy for charging an on-board battery which provides power to the cellular communications module.
A third aspect provides a method of providing wireless internet on-board a vehicle, comprising: removing an existing aerial from a connector on the exterior of the vehicle; and connecting the module of any preceding definition to the exterior connector.
The invention will now be described by way of non-limiting example with reference to the accompanying drawings, in which:
Embodiments described below relate to aerial units which can be retro-fitted to a vehicle's exterior and which include a cellular communications module providing wireless Internet connectivity. The units have an on-board renewable power generator in the form of a wind turbine, which delivers charging current to an on-board battery as the vehicle travels. The battery powers the cellular communications module, thereby offering a neat solution to providing wireless Internet access on virtually any vehicle. Although not essential to the invention, the embodiments also provide a DAB receiving capability to provide a combined solution and hence are introduced as “DAB receiver units”.
A first embodiment comprises a DAB receiver unit provided in the form of a self-contained aerial unit that comprises the functionality to scan, receive and indicate to a remote device (e.g. a head unit) both DAB and FM channels receivable through an on-board antenna which may be integrally attached or which may be detachable. Upon receiving selection of a channel from the remote device, the aerial unit transmits the channel (after decoding in the case of DAB) down the existing FM feed to the vehicle's head unit. This is done over an available FM frequency. The DAB receiver unit is designed to connect to the external antenna connector, commonly found on the roof of a vehicle, which connector is connected via a wired feed to the vehicle's head end. This aerial unit in use replaces, or works with the existing, standard FM whip or fin type aerial fitted to vehicle exteriors. Attachment is by means of a threaded bolt that screws within the standard roof socket, for example the universally-used 4.5 mm socket. This socket has an existing wired connection to the FM input of the vehicle's head unit which handles analogue FM channel selection, channel display, and output to the speakers.
Further, the aerial unit comprises a cellular communications module, in this case a 3G/4G communications unit, which provides wireless access to the Internet.
Further still, the aerial unit comprises a renewable energy source, for example one or both of a wind turbine or solar cell(s) that converts kinetic/solar energy to electrical energy which is stored within an internal rechargeable (e.g. lithium) battery of the aerial unit for powering its internal electronics, including the cellular communications module. In the case of a wind turbine, the travel of the vehicle will generate sufficient energy for an estimated 10 to 12 hours of continual usage when the vehicle is subsequently stationary.
A second embodiment is also described later on, in which a similar retro-fit aerial unit is provided, having a memory for storing a plurality of preset analogue frequencies, e.g. FM frequencies, assigned to each of which is a DAB radio station set by a user. In addition, as back-up, the FM frequency or frequency range that corresponds to the same radio station as each DAB station can also be stored. This is so that should the DAB signal fail, the same radio station can be sent in its FM form down the respective present FM frequency in hopefully a seamless manner. The assignment can be performed using an external computer program or application. The aerial unit may connect to a PC or similar computing device running the computer program through a wired connection, e.g. a USB or micro-USB connector, or over a wireless connection, e.g. a WiFi connection to a home network. The wired connection can enable charging of the unit. The aerial unit in this embodiment simultaneously transmits down the wired feed to the head unit each of the decoded DAB stations on their respective assigned frequency. At the head unit, therefore, the user can scan the FM spectrum to one of the assigned frequencies at which point the corresponding DAB station is output. In practise, the user may save the assigned frequencies to the head units preset buttons, as commonly provided.
This embodiment does not therefore require a remote device, e.g. a Bluetooth device, to select a DAB station from within the vehicle, as these are preset into the unit's memory. However, the memory may store a special frequency assigned to a remote Bluetooth device, and this frequency can be used to carry audio/video (generally ‘media’) sent from the Bluetooth device and transmit it down the wired feed to the head unit. This allows tracks saved on the Bluetooth device also to be played via the head unit.
Similarly, the second embodiment includes a cellular communications module for wireless internet connectivity, which receives power from an on-board renewable energy source which charges an internal battery.
Aspects of the first and second embodiments can be combined, e.g. with the preset channel memory in the second embodiment also being provided in the first embodiment. Both embodiments can be provided in a series of product options. Both embodiments can also utilise geographic positioning means, e.g. data from a GPS receiver, to identify dead zones (areas of weak or no signal) where all or certain DAB channels cannot be received, or the signal level is low, and to report the positions to an external system. The GPS positioning data can come from a portable device such as a mobile telephone or similar mobile terminal.
The first embodiment will now be described in detail.
Referring to
The aerial unit 1 comprises a receiver module 19, a whip antenna 21 and a threaded bolt 17 connected to the receiver module 19.
The threaded bolt 17 connects to the socket in the base 3, providing an analogue output signal from the receiver module 19. The receiver module 19 itself is connected in this case to the whip antenna 21 (although any type of DAB compatible or capable antenna can be used) and circuitry within the receiver module is powered by stored energy harvested from a renewable energy source, in this case generated by a wind turbine 23 internal to the unit 1. Alternatively or additionally, solar cell(s) may be mounted on or around the unit. Visible in
In the aerial units 1, 50 the whip antenna 21 is shown permanently fixed to the receiver module 19, 51 as part of the unit but it can be removable by means of a bolt that secures to a top socket of the receiver module. The bolt (not visible in the Figure) will be substantially identical in dimensions to the bolt 18 on the base. In the case of the latter, the receiver module 19, 51 act as an intermediate module and all the user needs to do is unscrew the existing antenna 21 from the vehicle roof, connect the receiver module 19, 51 in its place, and then screw the antenna to the top. For ease of explanation, however, we will assume that the whip antenna 21 is permanently fixed to the receiver module 19, 51 in the following.
Any of the antennae disclosed herein could be a passive or powered (amplified) antenna, if sufficient power is available.
Referring now to
The RF tuner 25 is both a DAB and FM tuner, although separate units can be used. It is connected to the whip antenna indicated by reference numeral 21.
Software or firmware is provided on the baseband processor 23 (or alternatively on a separate processor) to control the operation of the receiver module 19, 51 as will be explained below. Control of the receiver module 19, 51 is in this embodiment by means of a wireless terminal, likely to be a terminal such as smartphone or tablet 39, but it can be any portable communications device with a display screen and user inputs.
The receiver module 19, 51 also comprises a 3G/4G cellular communications module 80 which draws power from the battery 31 which is charged by the wind turbine 23. The antenna associated with this module 80 can be combined with the whip antenna 21 or a separate antenna can be provided. This module 80 is largely conventional in that it includes a modem of the bidirectional transfer of data wirelessly using cellular communications, enabling computer devices in-range of the module, particularly those inside the car, to access the Internet. The internal fixed computer system of the vehicle may itself communicate using this connection. The cellular communications module 80 may require a SIM card 81 or the like provided by a cellular service provider, which may be inserted into a suitable SIM or SD card slot of the module.
The cellular communications module 80 permits a wireless internet connection to be provided without the need for a connection to the vehicle's battery, as is conventional. This also makes retro-fitting very convenient and is environmentally-friendly.
Referring to
Step 3.1 indicates the start condition, e.g. when the car is first started. In step 3.2 the receiver unit 19 attempts to pair with an in-range Bluetooth device 39, i.e. the tablet in
In step 3.8, a channel selection effected by the user on the tablet 39 app causes a selection signal to be sent back to the receiver module 19, 51 over Bluetooth. When received at step 3.9 the selected channel is received, decoded and transmitted over an available FM frequency down the wire feed 9 as an analogue signal for output by the head unit 11 in the conventional way, i.e. at step 3.11.
If at any point in the operation the DAB signal is lost, the receiver module 19, 51 will revert to FM operation.
The choice of FM frequency over which to send DAB channels or tracks down the wire feed 9 can be done manually. In some embodiments, the receiver module 19, 51 is configured to automatically locate a free frequency in the conventional manner. This can be performed periodically.
An additional step may be incorporated into the methods shown in
The wind turbine 23 may be mounted horizontally, or substantially horizontally, within the body of the receiver unit 19 so that it rotates about a vertical axis. This enables energy generation as the car moves forwards. It is estimated that the battery will provide 10 to 12 hours of continual usage when the car is stationary following a non-trivial period of driving. The
It will therefore be appreciated that the receiver module 19, 51 provides an elegant solution to providing a wireless Internet connection, and also a DAB service to any vehicle by utilising its existing wired feed 9 from aerial connector to head unit 11. The provision of the in-built power generator(s) removes the requirement for the unit 19, 51 to be connected to the battery, e.g. using the lighter socket or a direct connection to the loom, and lowers the carbon footprint by using a renewable source. The local, personal area network (PAN) provided by the cellular communications module 80 and Bluetooth module 29 removes the need for a dedicated control unit. No specialist technical expertise is necessary to retro-fit the module 19, 51.
A second embodiment is shown in
In use, the user will remove the module 19, 51 from the vehicle, and connect it using the micro-USB port 20, 57 to the PC 80. The user selects via a Graphical User Interface (GUI) which five DAB stations from a presented menu are to be allocated to each distinct frequency. When the user has finished, the receiver module 19, 51 is synchronised to the application program and the assignments are stored on the memory 70 as in
Because the module 19, 51 has data connectivity, through the cellular communications module 80, then the synchronisation may be performed wirelessly.
In use, when the receiver module 19, 51 is re-connected to the vehicle and so to the wired feed 9 and to the head unit 11, each of the five digital channels is received, decoded and simultaneously transmitted to the head unit over the distinct, respective FM frequencies. Thus, only these five FM frequencies will be available at the head unit 11 and scanning the head unit across the FM spectrum in the normal way (whether a manual or auto scan) will detect them to allow output of the associated DAB channel. In practise, a user will likely assign the frequencies to respective preset buttons on the head unit 11.
It will be appreciated that in this second embodiment, the use of the Bluetooth module 29 for displaying and selecting a DAB channel is not necessary; rather five DAB channels are preset into the module 19.
Having said that, the sixth FM frequency shown in
The application program for setting up and synchronising the preset memory 70 may be associated with a user account with a remote server. In this way, user preferences can be stored in association with the account. As is conventional, initially, the user will need to set up the account, including inputting an ID associated with their module 29 hardware, as well as a username and password.
Certain other features which are applicable to the first and second embodiments will now be described.
In some embodiments, there is provided the ability to identify the geographic location of the receiver module 19, 51 and to use the location when no DAB channels are available (i.e. because the car is in a dead zone), or certain DAB channels are unavailable, to provide to a central server or database the location information. In a refinement, DAB signal strength can be recorded and uploaded to the server to provide an overall picture. In this way, the central server can maintain an up-to-date picture or map of DAB service quality based on a regular update stream from potentially very many mobile units.
The geographic location may be obtained by a GPS receiver provided in the receiver module 19, 51 or perhaps within the smart terminal (e.g. tablet) 39. Cellular triangulation may be used as an alternative or backup source of location information. In operation the receiver module 19, 51 identifies when no DAB signal or channel(s) is or are received (or signal strength information) and at that time causes the current location to be recorded. Where the location is determined on the receiver module 19, 51 it can be stored locally and/or passed to the tablet 39 for subsequent uploading to the central server. Where the location is determined on the tablet 39, it simply stores the location when the received DAB channels received over the Bluetooth link drop out. The locations are subsequently uploaded to the central server.
Uploading to the central server can be by means of any data channel when available. For example, the cellular communications module 80 offers a straightforward way of passing the information onwards wirelessly over the Internet.
In some embodiments, software within the receiver module 19, 51 is configured to detect and store different routes or journeys, as well as dead zone information along the route or journey. In the event that the progress of a stored journey is detected as being taken by the vehicle subsequently, then the software is configured to predict approaching dead zones and thereby switch to the FM equivalent in advance of vehicle entering the dead zone. Subsequently, when the dead zone is exited according to the stored information, the DAB station is returned to.
An alternative or additional method is through docking the tablet 39 to a home computer.
In some embodiments, the receiver module 19, 51 is configured automatically to switch on and/or pair with a Bluetooth device 39 in accordance with a signal received wirelessly from the vehicle. In this regard, as is known, there is an on-board diagnostic port provided on most cars referred to as OBD-II. This takes data from various sensors of the vehicle primarily for diagnostic purposes. It is currently possible to purchase off-the-shelf an OBD-II Bluetooth unit which in the case of the first and second embodiments described, would permit the status of the vehicle (e.g. ignition on) to be transmitted wirelessly over Bluetooth to the Bluetooth module 29 for switching the receiver module 19, 51 on and/or for initiating pairing. Another option of using the OBD-II port may be to alter the volume of the signal output based on sensed engine speed, with the volume being increased automatically as the RPM increases.
Although DAB has been given in the embodiments as an example of a digital radio system, it will be appreciated that the system and methods are applicable to other digital radio technologies. Similarly, whilst Bluetooth has been used as the local data streaming technology and protocol, alternatives may be used. Similarly, in place of the tablet 39, any portable display device having a wireless communications function enabling data exchange with the receiver module 19, 51 can be used, for example a smartphone.
A number of practical intermediate receiver modules which can be used for modules 19, 51 are shown in
The hardware used in the modules 19, 51, including the battery and electronic circuitry, is securely located within one of two watertight chambers 126, 127, or can be divided between both. In this case, a lead 126 carrying the electricity generated by the wind turbine 121 is shown entering the upper chamber 126 where the battery (at least) will be stored. The FM analogue signal will be connected to the bolt 114.
In the above embodiments, although the provision of the wireless communications (3G/4G) module comprises also the provision of digital (DAB) radio receiving modules, it should be understood that, in some embodiments, only the former need be present. For example, with reference to
In some embodiments where the aerial is built-in or integral, it will be a powered (amplified) aerial/antenna.
The term renewable energy is interchangeable and synonymous with harvested energy, being the process of deriving energy from external sources, such as solar power, thermal energy, wind energy and kinetic energy.
It will be appreciated that the above described embodiments are purely illustrative and are not limiting on the scope of the invention. Other variations and modifications will be apparent to persons skilled in the art upon reading the present application.
Moreover, the disclosure of the present application should be understood to include any novel features or any novel combination of features either explicitly or implicitly disclosed herein or any generalization thereof and during the prosecution of the present application or of any application derived therefrom, new claims may be formulated to cover any such features and/or combination of such features.
Claims
1. A vehicle communications module comprising:
- a connector for attaching the module to an external part of the vehicle exterior,
- a cellular communications module providing wireless Internet data connectivity, and
- a renewable energy source configured to provide power to the cellular communications module when mounted to the vehicle exterior.
2. The module according to claim 1, wherein the connector is configured to be attached to the existing aerial connector on a vehicle exterior.
3. The module according to claim 2, wherein the connector comprises a bolt extending from a bottom of said module, and which is dimensioned and arranged to locate within an existing antenna connector socket located externally on a vehicle, for interconnecting the internal circuitry of the module and the existing wired feed.
4. The module according to claim 1, wherein the renewable energy source comprises a wind turbine.
5. The module according to claim 1, wherein the renewable energy source comprises a solar cell.
6. The module according to claim 1, wherein the cellular communications module is configured to be initiated automatically upon detecting a predetermined signal issued by the vehicle over a wireless channel.
7. The module according to claim 1, further comprising a non-cellular wireless communications module, configured to communicate with a remote terminal.
8. The module according to claim 1, further comprising a Digital Audio Broadcasting (DAB) receiver connected to an onboard antenna for receiving and decoding DAB channels and transmitting said channels using an analogue frequency down a wired feed to an internal head unit of the vehicle.
9. A self-contained antenna module for attachment to a vehicle exterior, comprising:
- a connector for removable attachment to an existing wired feed connector to an entertainment head unit,
- a cellular communications module configured to provide a local wireless internet access point, and
- a renewable energy source generating independently of the vehicle's own power source electrical energy for charging an on-board battery, which provides power to the cellular communications module.
10. A self-contained antenna module for retro-fit attachment to a vehicle exterior, comprising:
- a casing;
- a connector projecting from a lower wall of the casing for removable attachment to an existing connector on a vehicle exterior which feeds to an entertainment head unit,
- within the casing, a cellular communications module configured to provide a local wireless internet access point, and a rechargeable battery for providing power to the cellular communications module; and
- a renewable energy source for generating independently of the vehicle's own power source electrical energy for charging said battery.
11. The module according to claim 10, further comprising an antenna connected to the connector for the reception of radio signals which are fed to the entertainment head unit in use.
12. The module according to claim 10, wherein the renewable energy source comprises a wind turbine partially or entirely housed within the casing, at a front thereof.
13. The module according to claim 12, wherein the wind turbine is substantially horizontally mounted, so as to rotate in use about a substantially vertical axis.
14. The module according to claim 12, wherein the wind turbine is mounted within a generally arcuate opening in the front surface of the casing.
15. (canceled)
Type: Application
Filed: Feb 16, 2015
Publication Date: Feb 23, 2017
Inventors: Jon Merricks (Hampshire), Dan Copley (Hampshire)
Application Number: 15/118,772