There is a need for a monitoring and collision avoidance system for groups of vehicles travelling together, as in convoy, with respect to encountering individual or similar groups of vehicles, to avoid collisions. For example, a group of snowmobiles or other such vehicles travelling over unmarked terrain are in danger of meeting a similar group of snowmobiles, particularly at blind corners.
A system is provided comprised of transceivers with appropriate control circuitry intended for use on vehicles that communicate between themselves to create a proximity perimeter for the purpose of collision avoidance and group monitoring. The transceivers can alert users when other transceivers are within certain proximities. There are 2 main functions of the system, (1) as a warning when transceivers are closing in on each other to avoid a collision, and (2) forming a unique group that learns each other transceivers that can insure group integrity by way of alert(s) when a group member(s) fall(s) outside the proximity perimeter. The invention further includes a method to locate group member(s) that are not within a defined perimeter.
a and 1b are schematic diagrams illustrating pictorially how the system functions when two groups (A and B) are approaching a “blind” corner or an intersection in a path or trail;
The system incorporates RF signal strength detecting algorithms and can include known GPS coordinate processing to define the proximity perimeters. The GPS, together with an optional eCompass can also provide directional information for both collision avoidance and member tracking.
The Term “Transceiver” as used herein refers to the product as a whole, which includes the components described in
The example application of the invention can be applied to a host of other monitoring and collision avoidance warning system for off road vehicles, such as, motorcycles and dune buggies and watercraft as well.
A pictorial schematic diagram of how the system is utilized to avoid a collision is shown in
As noted above, the system hardware is made up of electronic circuitry in an appropriate enclosure (referenced as the transceiver 10 as a whole) mounted on, or otherwise attached to a vehicle. A block diagram of the electronic circuitry and its functions are shown in
Power in 44 provides power to operate the circuitry of
The method of implementation of the Firmware will now be described. Firmware is the instruction set stored in memory together with other non-transitory instructions stored in memory for programming the microprocessor to perform the functions and steps herein described. The principal functional description of the firmware follows.
Each transceiver (
User interface 32 provides for specific transceivers to “join in a group”. The group would typically be a set of users on vehicles that want to stay together. Once joined, the transceivers of the group members would not initiate any alert or other notification when the group members are in proximity with respect to a specifically defined or preselected outer perimeter 22. But, if a group member (or several group members) falls out of that perimeter, the member(s) becomes lost member(s), and a unique visual 36 indicator and/or a unique audible 38 indicator lets or informs other group members still within the perimeter that one or more members have moved outside of the perimeter 22. If the lost member(s) re-enters the outside perimeter 22, the other members are notified by a unique visual 36 and/or a unique audible 38 indicator and the transceivers will resume normal operation. If the group members want to locate a lost member, they can enable a search feature of the transceiver 10 that allows them to track to the location of the lost member through a visual indication 36 of the signal strength of the beacon being transmitted via antenna 52 of the lost member.
Any Transceiver mounted on a vehicle that is not a part of your defined group is termed a “foreign transceiver”. A vehicle, not part of your group having a foreign transceiver mounted thereon or not, will cause an alert to be initiated, when that vehicle is within the outer 22 and/or inner 20 perimeters of your group. And likewise, any foreign transceiver mounted on a vehicle not part of your group will cause an alert to your group when they are within the outer 22 and/or inner 20 perimeters.
The signals provided by alert indicators (audio 38 and/or visual 36) can change based on data received by a Transceiver 10 via the controller in the microprocessor 30 and/or by a Group member via its user interface 32. For example, a non-member entering the outer perimeter 22 may be a blinking yellow light, and/or short intermittent beep. If the non-member moves to within the close proximity area 20 the light may flash rapid and bright, be red in color, or other visual indicator 36 indicating a high alert condition. The Audio 38 may follow this same procedure . . . low volume beeps to high intensity sounds depending on the determined proximity of a foreign transceiver. In addition, a user may select to only display a warning when a foreign enters the inner proximity 20 (i.e. do not indicate an outer perimeter 22 breach).
User interface 32 and the information display on the interface 32 provide a method to allow each user to set up or program the user's transceiver. The following items are options included in the user interface.
Define a group. Various methods can be implemented to do this function. The object is for all transceivers in a specific group to learn all other members in that group and only those members. Considering that that there may be other groups within the range of the transceivers that may be forming their own unique group at the same time, the Transceivers 10 will have a method to ensure only the intended members of a group can join that group. One such method would be to inform the members of a group an assigned group number (or the group members can decide on any group number). Once decided, then each member of the group would enter that group number in their transceiver as the identifier of the group. The Transceivers 10 will then communicate with each other thus teaching all members that have entered the group the number of the group, and the information with respect to group number and members of the group will be stored in memory of the microprocessor 30 of each transceiver. Additional information that can be useful with the feature of locating a lost member, such as a user's name, can be included and stored when defining a group.
Example: The group members are issued, or decide on group # 1234. Each group member programs the member's transceiver (microprocessor) to enter the group number in memory via the group learn mode, and then enters the group number through the use of the user interface 32. As other group members follow this procedure, their transceivers recognize other transceivers that have joined and displays these through the information display, there by letting all group members know the quantity of joined members, as well as other “joined member” information that may be useful. One such embodiment of this user function is detailed in the Program function block diagrams section below which describes the various routines and subroutines.
Add a member to a group: The transceivers will have a method to add a group member after the initial Group has been established. One method to do this would be to provide the new member with the group number, which they would add to their transceiver, all other transceivers in that group would now recognize that new transceiver as being in the group. One such embodiment of this user function is detailed in the Program function block diagrams section below
Locate a lost member of a group: The transceivers will have a method whereby the range of the system can be extended beyond the outer perimeter as defined above that can be utilized to “track down” the lost member when needed. One such embodiment of this user function is detailed in the Program function block diagrams section below
Ignore function: The transceivers will have a method to ignore foreign transceivers, i.e. not activating the Status display. One such embodiment of this is to include a single button the user presses. The program will ignore all foreign transceivers currently within range and not display alerts or warnings. One such method would be to activate the ignore function for a specific time period and automatically re-enable normal monitoring when that time period has elapsed. For example, one press for 1 minute, two presses for 2 minutes and so forth. Another method to automatically re-enable from an ignore condition can be if the foreign transceiver moves out of the outer perimeter, the transceiver that was in ignore mode will clear the ignore, so if the foreign transceiver re-enters the set perimeter the alert/warnings will activate.
Range limit function: The transceivers will have a method to limit the status display to alerting/alarming only on user selectable range(s). One such embodiment is a user selectable item shown in the Program function block diagrams section below
Auto Dimming the Status display: The transceivers will have a method to auto dim the status display at night.
The User Display 32 is shown in
The Member Visual indicator 72 is used to track a lost member. One embodiment of this is a series of lights horizontally (a light bar) indicating the proximity of the lost member. For example, a single light illuminated in the series would indicate the lost member is far away, When all lights in the series are illuminated that would indicate the lost member is very close. The Visual indicator 72 may be mounted separately from the user interface section of the Transceiver 10. The member visual indicator is also used to let all members know that a member has either left, and/or re-entered the outer detection perimeter, via lighting up the member visual area for a short time with various light colors and intensities. One embodiment of this is using the series of lights above to sequence the lights in a downward pattern (for a member leaving the outer perimeter) and alternately, the string of lights would sequence in an upward pattern to indicate a member returning within the outer perimeter. The Visual indicators may be mounted separately from the user interface section of the transceiver. The Direction Visual Indicator 76 is only implemented if the GPS and eCompass options are included. The function of indicator 78 would be to indicate the direction of the missing member. One embodiment would be a diamond shape where the points of the diamond would light up indicating the direction (N, S, E and W) to go to find the lost member. The Visual indicator 78 may be mounted separately from the user interface section 32 of the transceiver 10.
The Foreign member indicator 74 alerts the user to a Foreign transceiver within the outer and/or inner perimeters. One embodiment is that this indicator uses lights of different colors (for example, yellow lights indicate an outer perimeter breach, and red lights indicating breach of the inner perimeter). The Visual indicator 74 may be mounted separately from the user interface section 32 of the Transceiver 10.
The Audio indicator 78 is used as an alert for a user, if there are Foreign transceivers within the outer and/or inner perimeters. In addition, the Audio indicator 78 can be activated by another member seeking your transceiver that can assist in locating a lost member.
The Information display 64 is used by the user to get feedback to assist in entering configuration parameters (i.e. group number, name. etc.). One embodiment would be an LCD display with multiple lines of characters that can prompt the user for input of the parameters (for example, a 2 line×16 character display).
The Navigation keys 82 allow the user to enter configuration parameters or select the various options, such as, find a lost member, join a group, etc. One embodiment would be a set of 5 buttons in a nay-type configuration as depicted in
The 5 button “navigation key” user interface 82 allows for inputting alpha and numeric information. The Nay keys allow the user to scroll through letters or numbers depending on which display screen is being displayed, move the cursor position for entering the next alpha or numeric character and accept the information entered. The 5 button “navigation key” user interface 82 is shown below.
An example of using the Nav keys, along with the Information display is described in detail hereinafter.
The Program function block diagrams are shown in
Referring now to
Referring to
When a user selects to locate or find a member, the user's transceiver 10 uses the member visual indicator 72 section of the Status display to indicate the proximity of the member being tracked.
For reference design, there are 5 levels of proximity shown by a “bar graph” type LED display where one short bar is far away and full bars is close proximity, as shown to the right. Note that the Audio indicator 78 may be utilized to assist in searching, such as, for example, short beeps could mean far away, long beeps could indicate close proximity. NOTE: If there is no user interaction (i.e. no buttons are pressed) after 1 minute, the transceiver will default to the last group it was a member of.
When Find a Member is selected from the options, the screen 64 that appears in block 126 shows “Find: John”. John, in the example, is a member of the current group number. Selecting OK for John activates the “search function” of the transceiver, wherein John's Transceiver “Pings” are detected, and the relative power level of that transceiver's pings are displayed through the member status display as illustrated and discussed above. In addition, when the search for John's transceiver is being carried out, the audio indicator 78 in John's transceiver can be automatically turned on (i.e. loud beeps) that can provide additional assistance in locating John. Selecting DOWN will display the next member in the current group, i.e. Bill, as shown in block 128, who can be selected to be searched for, and so forth in block 130 and onward until block 132 is displayed on the screen indicating that all members have been accounted for. When the list of all group members is completed, as shown in block 132, the selection to exit the search option or repeat the list is provided. Selecting OK returns to the Active monitoring mode, the main routine. Selecting DOWN loops the subroutine back to its beginning and the subroutine repeats the list of members so a member can be selected to be searched for.
The subroutine for Joining a Group, that is, to an existing group is shown in
There now follows a specific example of key entry using the nav key buttons 82 for inputting a name and group number starting from power up, the blocks below are screen shots of display 64.
The Mute button 80 is used to temporarily disable the audio indicator 78 and Visual indicators 72 and 74 with automatic return of functionality. One method to accomplish this is to enable a specific time for each press of the button (such as, 1 minute for 1 press, 2 minutes for 2 presses, etc.).
Although the invention has been described in specific embodiments, changes and modifications will be evident to persons skilled in the art, which do not depart from the spirit and scope of the teachings herein. Such changes are deemed to fall within the purview of the invention as claimed.
This application is related to and claims priority from U.S. Provisional Application No. 61/646,006 filed on May 11, 2012, herein incorporated by reference in its entirety.
| Number | Date | Country | |
|---|---|---|---|
| 61646006 | May 2012 | US |