Distance Controller Diagram 24
                      Distance Controller

159. Diagram 24 shows the layout of the Distance Controller. The values that it supplies are used by the Main Signal Processor to regulate the distance between a vehicle that contains it and other objects.

160. The Distance Controller is a combination of the following electronic measuring instruments:
         Electronic Compass        
         Electronic Distance Meter (EDM)
         Electronic Camera
         Radio Link
         Sensors

161. The speed limits used by the Main Signal Processor in road vehicles to identify the drive mode can, for example, be matched to the real world as follows:    
         City Road  40 -- 80KMh
         Country Road 80 100KMh
         Mountain Road 20 -- 40KMh
         Motor Way (High Way) 40 -- 160KMh
Certain roads have transmitters at intervals that can override the values specified. The advantage of having the Main Signal Processor (MSP) set the speed limits within it's 30% range is that they can not be overridden by drivers, because once the Gas Pedal (GP) has reached it's limit it will still only be 70% of the maximum control voltage, whether or not a Main Signal Processor is built in to the vehicle or not. It is advantageous, if drivers are allowed to specifically place vehicles in the correct drive mode, which are specified here as speed limits. That is done on the touch screen of the Board Computer (BC) by drivers, because only production and maintenance personnel will have keyboard access to the Main Signal Processor (MSP). A driver can not exchange the Board Computer and thereby allow other values to be set, because the transmission error detection codes will be different for each vehicle size and those codes are hard wired into the Data Link Controller and the Main Signal Processor which do not allow dynamic software sequence changes. That allows workshops and other persons to not only repair their own vehicles, but also to modify and change road vehicles to off road vehicles, by changing the Main Signal Processor and Board Computer pair. Workshop owners will therefore be able to become vehicle production owners, while maintaining data security and power limits.  A driver can set the wrong drive mode, but because the Main Signal Processor is tracking vehicle habit, it can override driver setting in the downwards direction.

162. Each country can have their own transmission error detection code generator, so that the usual border checks on road vehicles can be made using electronic methods.
For Example, when a vehicle is passing through a check point, a request signal can be sent to the Board Computer to supply a part of the transmission error detection code and that code can be checked against their own codes or sent to other countries for identification. This function is very useful for continents that contain a lot of different countries and those countries feel that they need to make such checks. For that purpose, the vehicle identification number can be added to the error detection code so that there is no misunderstanding about the real purpose of the transmission error detection code. No other external request functions will be allowed to pass from the Board Computer to the Main Signal Processor (MSP), because the required software function will not exist in the system, hence the name reduced instruction set processing. If other requests are made, they will belong to patents that have other owners.  The same is valid for air and sea vehicles.


Electronic Distance Meter (EDM)

163. The (EDM) shown in Diagram 24 consists of:        
A. A light emitting diode (LED) and a light receiving transistor (LRT). They are mounted on a very small motor so that it can rotate angular distances in the X and Y directions. The light coming from the LED is concentrated so that it's beam is very small and it's wavelength will not irritate living species.
           
B. When the motor of the LED and LRT part of the Electronic Distance Meter section is in it's reference position, the LED and LRT will be pointing straight ahead.

C. Two LED and LRT combinations are required. One on each side of a vehicle. In Diagram 24 they are marked Controller A Side and Controller B Side.

D. When the two Distance Meters are measuring the distance of objects that are in front of them, one side will be stationary while the other side is moving in incremental steps from left to right around the X-Axis or visa versa from right to left. 

E. The rotation steps around the Y-Axis are carried out by both the Controller A Side and Controller B Side of the Distance Meters at the same time.

F. Each light beam that is pulsed from a Distance Meter has an identification code. The code is any random combination that is less than 255 characters long. At any given time, the Controller A Side will inform the Controller B Side about which code it is using and the Controller B Side will do the same to the Controller A Side.     

164. The braking distance of a vehicle defines how far ahead the Distance Meter is allowed to see. The angular distance that the Electronic Distance Meter on both sides of the vehicle are allowed to rotate around the vertical axis is matched to the braking distance supplied by the Main Signal Processor (MSP). That prevents the Distance Meter from making calculations about things that are outside of it's collision range. An example is shown in the bottom part of Diagram 24. It is sufficient to scan a distance that is 1.3 times the safe braking distance that is calculated by the Main Signal Processor (MSP). Safe braking distance is canceled, when the position of the steering wheel and gas pedal indicate an overtake manoeuvre.

165. The distance measurement is made as follows:
A. The distance between the (A) and (B) side of the EDM is known. The (B) side receives light from the (A) side and the (A) side receives light from the (B) side.

B. The angular rotation of the light emitting diode (LED) is known, because it is set by the Component Controller.

C. When light from one side reaches the (LRT) on the other side, it will have been reflected by an object that is in front.

D. The distance of the (LRT) that receives the reflected light from the object in front is calculated by the Component Controller behind the (LRT), because it also receives the angle of the (LED) that sent the light. That is done over the serial connection by the Component Controller on the opposite side.

E. The distance to the object in front is calculated by solving the sides of the triangle.











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Diagram 24
Crash Prevention


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