In fact, when it comes to ADAS, we first think of things like ACC (adaptive cruise), LDW (lane departure warning), LKA (lane hold), FCW (front car collision warning). These technologies have matured and the products have been mass-produced and are available on high-end vehicles in recent years. And these technologies are related to the camera, millimeter wave radar and body controller, and it seems that it has little to do with the map. In fact, if you combine maps, these features will become more powerful. Let's take a few examples. The ACC is actually set by the driver to a maximum cruising speed. The vehicle is equipped with a front-mounted sensor, such as a camera or millimeter-wave radar, to confirm whether there is a vehicle in the accessible area directly in front of the vehicle. If there is a vehicle, follow the car within the safe braking distance, and if there is no vehicle, accelerate to the set cruising speed. Note that the "in front of the vehicle", that is, the straight direction of the front of the car, should be emphasized. This adaptive cruise function is great if you are driving in a straight line, or if the road curvature is almost as straight. However, if in the curve, as shown below, the sensor of the vehicle in the left lane will mistakenly think that the vehicle in the right lane is in front of itself, and then immediately decelerate. In fact, the vehicle can completely maintain normal speed and bend. Or, as shown in the following figure, the vehicle in the left lane does not notice that there is a car in the front corner of the lane. Maybe when the vehicle is going up, or when the front vehicle suddenly brakes, it is too late to slow down, and then it is easy to happen. The accident happened. In addition, the map can provide the curvature of the road, and the vehicle can decelerate in advance when cornering to ensure safety. Or in the corner, the recognition of the camera can also be targeted to identify the recognition mode to improve the detection accuracy of the lane line or traffic participants of the curve. The map can also tell the vehicle when it will enter and leave the tunnel, and the corresponding camera can adjust the exposure in time to ensure continuity of perception. At night driving, the vehicle can also automatically adjust the illumination angle of the lights at the corners according to the curvature information provided by the map, or adjust the illumination angle of the lights up and down according to the slope information provided by the map. On the other hand, many providers of camera recognition currently use the camera to identify the speed limit cards on the road to achieve the speed limit function, but the map can provide better service. For example, the map can not only tell the speed limit of the vehicle on the road section, but also provide the recommended speed when it is dangerous to the road, bridges, tunnels, and up and down ramps. Not only that, but also the recommended speed for each lane. It is also necessary to emphasize that in the case of active safety and automatic driving, the recommended driving speed is more practical than the speed limit of the road. Based on the slope data, the vehicle can be throttled before the uphill slope, so that it accelerates properly, and when it reaches the top of the slope, the throttle is reduced, and when the slope is down, it is not refueled. The Horizon's Electronic Horizon is based on the above, and is said to save up to 3%. This function is more prominent in the savings of daily operating costs for commercial vehicles and logistics companies. There are also more basic autonomous driving that can be implemented based on maps. For example, in the automatic driving scene of a highway, when driving in a straight line or when driving in a lane, the vehicle is completed by the main function of ADAS, that is, ACC+LKA+FCW. When a lane change is required, the command of the lane change can be a manual turn signal or a lane change of the autopilot system. At this time, the lane information provided by the map confirms whether the area of ​​the current vehicle can be changed. If you want to go down the ramp, the map can inform the vehicle in front of the ramp at a great distance. At this time, the vehicle has enough time to borrow the map data and slowly lean to the rightmost lane to prepare for the ramp. And if you don't go down the ramp, or if there is a place where traffic flows, the traffic can have enough time to lean in the far left lane to ensure the safety of the train. Therefore, ADAS combined with high-precision maps will greatly improve the ability of autonomous driving.
heat pipe Solar Collector is one type of vacuum tube solar collector.
The
selective coating on the inner cover of the Vacuum Tubes
converts solar energy and transfers heat to the heat pipes
by aluminum fins. The liquid in the heat pipe changes into vapor
which rises to the condenser. Then the heat passes through the heat
exchanger, the water inside of header pipe is being heated, and the vapor
becomes liquid, returning to the bottom of the heat pipe. This
transference of heat creates a continuous circulation as long as the heat
pipe vacuum tube collector is heated by sun.
Heat
is transferred by liquid to the header pipe and heat the water efficiently. In
addition, heat pipe vacuum tubes is highly freezing resistance, which ensures
higher efficiency in cold areas.
Heat pipe solar collectors can be used in both pressurized or non-pressurized circulation systems.
Evacuated heat pipe technology
Heat Pipe Solar Collector,Pressurized Solar Collector,Heat Tube Solar Collector,Heat Pipe Collector Linuo Ritter International Co.,Ltd , https://www.lnrtsolarenergy.com
2. Highly selective absorber layer on the inner glass tubes (AI/ALN,) which
enables an optimum energy yield.
3. Aluminum heat transfer plate to provide an optimum heat transfer medium
system.
4. Copper heat pipes transfer the extracting heat effectively.
5. Rock wool insulation with an aluminum lamination in order to prevent heat
loss in the manifold.
6. Compression ring fitting (Ø 22 mm) for flow and return which enable a safe
and easy-to-install pipework connections.
7. The most common working fluid is water for ambient temperatures of - 30 °C
to an operating temperature to 90 °C.