http://www.dworin.com/moon-earrings/
Will Not Find The Moon To The Lunar North Zhejiang University Professor Of Truck
On the ground is becoming increasingly easy to drive, with the GPS Navigation System, take anywhere “was the command.” But if the car moved to the moon, unmanned, the police command, no GPS, how to open? Information and Electronic Engineering, Zhejiang University, Professor Liu Jilin and so came up with the band “GPS function” and “eye.” Just recently passed the acceptance of the Shanghai Committee of lunar rover project (commonly known as the Moon vehicle), the “machine vision navigation subsystem,” R & D is his team commitment.
Rover has 8 eyes
Yesterday, Professor Liu Jilin laboratory, the reporter saw a simulation of lunar rover.
Car put up a pole, above the withstand three “eyes” (ie camera), the body was added with a laptop, no external power supply body, and no remote control. In a few square size, and some rock venues, the “moon vehicle” was launched, not one went ahead, but open to open the stop, when to stop “Scoop” eyes to see things immediately reflected in computer, most cattle are also now “paint” out of a three-dimensional map, showing where there is stone how most high. Then the rover to avoid thinking about how good the stone and continue straight ahead.
Ji-lin said that this is not a complete model. “The real lunar rover will have 8 eyes. Roof have two pairs, a pair called the navigation camera, a pair called the panoramic camera, can be turned 360 °, see the complete picture of the surrounding terrain; body before and after the body also have a Yes, call avoidance camera can only see 4 meters. When the see the whole picture, the car to move forward or backward, they would play the. ”
Course, this step is necessary to stop and think, the speed will slow a lot. “The U.S. Mars rover able to get to 10 meters a day, our lunar rover will not exceed this speed.” Because the rover can only rely on solar power, power is small, less so with the CPU performance, coupled with the moon there is radiation, to radiation in the process but also reduce the CPU and its performance, “it not reach the level of 286 computers.”
The moon will get lost
We drive on the ground, there are two very important things, one direction, the second a distance. From Hangzhou to Shanghai, and Shanghai in what direction to tell you, then tell you distance, you can drive to the. Be on the moon, these two very simple things are difficult.
“First, the direction of where? In a desolate moon, neither the GPS navigation system and no compass. Because the moon did not have a lot of satellites around the Earth it turns so there is no GPS; the compass of So, can play a role in the earth, is to rely on the earth’s natural magnetism of the Earth South, the North Pole are two large magnetic field, but the moon is not magnetic. “So, how the moon” to find the North “is very important. Ji-lin design of this visual navigation system, can allow the rover’s high angle of the sun to measure the direction.
Secondly, the vehicle has a speedometer, odometer can know according to how far we go. However, this odometer to move the vehicle on the moon to die. “The U.S. rovers on one thing happened, the vehicle continued implementation of the forward command, can shoot photos have shown that car back in place did not move. The original car stuck in the hole, slipping a spot.” Ji-lin design a ” binocular visual odometry, “in situ lunar rover first take a picture, taking two steps forward and then take a picture, according to two photos show the difference in terrain, it can be worked out so far.
Ground rover remote control light not work
‘s Curious, why not play on the ground, as remote as the moon car remote control car? It was not more simple? Ji-lin said that the ground can walk there will be many restrictions on remote control. “Moon 3 types of car travel, a kind of remote control it is to go in the ground, this is the most simple; second target points go, that is, from start to end point between the design of several objectives, it went step by step ; third, it is going. an end to it directly, let it judge went over. This is the hardest. “
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