2010年8月9日星期一

How to Install Wireless Car Rearview Systemi





Wireless Car Rearview System is easy to install, easy to wire. It is economical and practical, and currently widely used.

Install wireless reversing video system, follow these steps:
1, Remove the license plate.
2, Remove the trunk floor.
3, Open the license plate light cover.
4, The camera power cable from the vehicle license plate light penetration hole, and fixed-line.
5, The camera fixed on the plate rack.
6, The camera negative relationship between the power line is received by reversing the power on lights.
7, Restore the rear of the demolition of parts.
8, Connect the display power supply into the cigarette lighter, replce well of the display.
9, Start the car, hanging reverse files, then display the reverse image.

Special Reminder:
1, In the camera when the power cord through the tail covered with small wire pulling more root system. That would be more favoring.
2 After installation, please note that check in the parking camera and check whether the luminous light is turned on, and if that does not turn so it is the power is not connected.
3, shall be able to launch panel on the front of the leading car parts. Can not be placed on the back cover of the steel sandwich in the car, it might as steel barrier will affect the camera and the display is installed after the non-poor signals or images.

A Talking Parking Sensor

Recently, a "talking" of the parking sensor was appeared on market in Beijing. According to reports, this reverse sensor detection by the host and a four-wide angle ultrasonic probe composition, close to the barrier to provide simulation of voice prompts, to help "newcomers" auxiliary reversing safety devices.

Usually, people are reversing to determine by visual observation of the distance between car and obstacles.
But for a new driver, the sense of space is poorer than skillful drivers. Driving longer, wider car, the distance can not be accurately judged by a new driver; Reversing at night is more vulnerable to dark solar films and effects of light, then hit the railing, stairs, trees and other obstacles .

Installing a "talking" automotive parking sensor , the one hung up reverse gear, there will be voice prompts accurately the distance between vehicles and obstacles, to help drivers to eliminate blind eye. Because "talking", reversing off the radar information provided by the driver's attention, the driver can concentrate on the car, then make reverse be more safe.

In addition to voice prompts, the "talking" parking sensor also offers LCD (liquid crystal display). When the voice prompt is not needed, drivers can turn off the volume, relying on information provided from the LCD display to reverse.

2010年8月6日星期五

Reverse Parking Sensor Evaluation

While each vehicle has a rear view mirror, but inevitably, after all, as there is a blind spot. To compensate for this deficiency, the installation of parking sensor may be the new owners' choice.

Then many reversing radar what the market performance? Whether the newcomers can solve the trouble reversing? New Express vehicle testing in heart has been installed on board on a number of car parking sensor during the actual measurement.

Parking sensor works

Major role in reversing radar when in reverse, using ultrasonic principle, by the device on the rear bumper send ultrasonic probe on the impact. After the reflection of this wave probe obstacles to calculate the body and the actual distance between the obstacle and then prompted for the driver to stop and reverse easier and safer. Tips for reversing radar can be divided into liquid crystal, three kinds of language and sound; to receive a wireless transmission means and cable transmission and so on.

Parking sensor is a safe vehicle parking assist device, to lift the drivers start parking and vehicle access around before and after the trouble caused, and to help the driver to remove the dead zone and blurred vision defects, improve driving safety.


Test 1

Parking sensor Brand: Rail general probe: 4

Warning prompt by: Sound + mirrors digital distance display

Installation of vehicle: Passat

Warning from the test: we first tested with an ice cream bucket and found the car parking sensor simply undetectable! Until the ice cream barrel accumulate to the height of 50 cm can be tested. The reversing radar obstacle distance display accuracy of 10 cm. Measured in barrels of ice cream for the longest detection range of 120 cm, reversing radar display at this time distance of 130 cm. The most important proximal. Distance of 40 cm were tested and the results are still accurate. But when the ice cream barrel less than 40 cm away from the rear, the parking sensor display from "0." That is the smallest of the reversing radar detection range of 40 cm.

Obstacle azimuth display test: the reversing radar only shows the left or right barrier.

Detect dead test: When the top ice cream bucket center deviation 8 cm above the probe center, the probe can not find the existence of the ice cream bucket! Also issue of sensor means of ultrasonic sound beam is narrow, cone obstacle detection on the tube there are more dead.

Conclusion: Reversing Radar 50 cm below the height of obstacles in the "blind eye" to detect acoustic beam is too narrow, when the obstacle departure from exploration. When the head is on the point of view, there is a big blind spot detection, obstacle detection cone of the tube there are more bind spots.

Test 2

Parking sensor Brand: All safety probe: 4

Warning prompt by: Sound + Digital Display + direction from light to indicate

Warning from the test: the reversing radar obstacle distance display accuracy of 1 cm. Measured in barrels of ice cream vehicle farthest with a detection range of 140 cm, reversing radar display at this time distance of 154 cm. The most important proximal test, we were at 50 cm, 47 cm, 40 cm and 35 cm for distance test, the results are very accurate. However, when ice cream barrels less than 35 cm away from the rear, the parking sensor display from "0." That is the smallest of the reversing radar detection range is 35 cm.

Obstacle azimuth display test: the reversing radar can accurately displayed.

Detect dead test: When the top ice cream bucket center 6 cm above deviate from the probe centers, the probe can not find the existence of ice-cream bucket! That is the issue of sensor ultrasonic beam is narrow, cone obstacle detection on the tube there are more dead ends.

Conclusion: The safety of this reverse sensor, proximal more accurate detection range, obstacle detection and accurate location. However, acoustic detection beam is too narrow,

When the obstacle is on the point of departure from the probe when there is a big blind spot detection, obstacle detection cone of the tube there are more dead ends.

2010年8月5日星期四

Types of Projector

According to the application of the projector environment categories, they can be divided into the following five categories:

Home Theater Type: mainly optimized for video aspects, characterized by brightness of 1000 lumens or so, high contrast, multi-projection screen 16:9 aspect ratio, a variety of video port range, suitable for playing movies and high definition TV, suitable for home users. Some home users use the mini projector to watch films at home.

Portable Business Type: General to less than 2 kg weight is defined as the business projector portable projector, this weight comparable with the thin and light notebooks. Business advantages of portable projectors are small, light weight, mobile and strong, is a traditional slide projector and medium-sized alternative to thin and light notebooks with business with portable projector is conducting mobile business users the first choice for mobile business presentations with time.

Education Meeting type: General located in schools and enterprise applications, using mainstream resolution, brightness in about 2000-3000 lumens, moderate weight, heat and dust to do better, for the installation and short distances, feature rich interfaces, easy to maintain, cost performance is relatively high for bulk purchases of universal access.

Mainstream project type: compared to the mainstream in terms of ordinary projector, projection projector projects a larger, more distant, high brightness, and generally also supports multi-lamp mode, to better cope with large-scale installation of variable environment, for education, media and government are the areas of application.

Professional Theatre Type: This type of projector pays more attention to stability, stressed the low failure rate, the thermal performance, networking capabilities, ease of use has done so very strong. Of course, in order to adapt to a variety of professional applications, the most important features of the projector works, or its high brightness, the brightness of 5,000 lumens or more generally up to as high as 10,000 lumens can be super. Atom projector is more easy to carry. As the large volume and weight, are often used in special purposes, such as theaters, museums, town halls, public areas, can also be used to monitor the traffic, public security command center, fire and air traffic control center environment.

2010年8月3日星期二

Reversing Radar Sensor

Concerning parking sensor kit, then it is related to the ultrasonic probe. The ranging advantage lies in its convenience for quick, simple calculation, easy to do real-time control. Parkin sensor is a non-contact detection and measurement precision, can be achieved in the practical requirements of industry. Take it as an example: In order to mobile robots to automatically avoid obstacles walking distance, measurement system must be equipped to make timely access to information on the distance from the obstacle. Also can be used for reversing radar, topographic mapping, construction of houses, bridges, roads, excavation of mines, oil wells.


Reversing radar sensor: In order to study and learn how to use ultrasound, it has been designed and produced a number of ultrasonic generator. Ultrasound probe, the use of sensor, generally speaking, the ultrasonic probe can be made into two categories: one is to use electrical methods generated ultrasound, another is mechanically generated ultrasound. Now the piezoelectric ultrasonic generator is more commonly used. It consists the two piezoelectric chip and a resonance plate.

When it's poles plus pulse signal, whose frequency is equal to the piezoelectric wafer. The natural oscillation frequency, the piezoelectric resonance will occur, and drive plate vibration resonance, ultrasound arises. On the contrary, if there is no applied voltage between two electrodes, it will be pressure for piezoelectric vibration when the board receives the ultrasonic resonance. The mechanical energy is converted to electrical signals, then it becomes an ultrasonic probe.
Reversing Radar Ranging: Parking sensor ultrasonic probe will emitting signal in a given time. Experiencing the measured object and then reflected back by reversing radar received. As long as the calculated ultrasonic signal received from the launch to the echo time, we can calculate the distance from the measured object, and get the propagation speed in the medium : Backup sensor probe can bring shell and line .Also can age the sensors by the high and low temperature, then the performance will be stability. Diameter size from 10mm to 22mm variety, generally based on various types of specifications to design the probe.

Rear View Camera Tips

Car rear view camera, has been widely used in various vehicles. But how to select a good car rear view camera? Maybe for customers, probably it is a little difficult. Because of varying products on the market today, and the products are vague, but whatever it takes, you can examine the the performance of car rear view camera from the following tips.


1. From the chip. (because it is the core chip of a rear view camera. It is not produced by domestic manufacturers. There are mainly two kinds of chips: CCD and CMOS. CCD manufacturers: like SHARP, SONY. CMOS manufacturers: OV , PIXEL, Micron. (Different chips, different price )

CCD and CMOS chips are the key part of the car rear view camera. According to different components,they can be divided into CCD and CMOS. CMOS is mainly used in products which do not require a high quality iamge, The advantage is that the manufacturing cost are less than CCD. and power consumption is also lower than the CCD, disadvantage of CMOS cameras is that CMOS demanding on the light source; CCD, is widely used in photography, camera's high-end technology component also comes with a video capture card. CCD and CMOS large gap between the technical and performance. In general, the image effection of CCD is better than CMOS. However the prices are much more expensive. it is suggested that consider to select the CCD camera without the affordability of the cost.

2. clarity
Clarity is an important indicator to judge the camera is good or not. In general, The quality of a high-definition image will be better. TV lines min: CCD is 420 TV lines, CMOS is 380 TV lines. For the present definition in the 420 line of products has become a mainstream products in reversing camera. 380 lines can also be good if it is can be debugging. However, according to various different camera chip level, different photosensitive elements, including the commissioning technician level, the same chip, the product may show the same level of quality of results will come out different.On the contrary, There will be some discount for the high-definition night vision products.
3. night vision
Night vision is in connection with the definition. The higher definition products of night vision are not better. This is because the chip. But a good quality product always with night vision capabilities, and it will not influence the quality of the image of obstacles. Although the color would be a little bad, but the clearness will not be a problem.

4. Water-Proof
The same chip, manufactured by different factories, performance of waterproof is different, so also it is the key for a customer who need to pay attention to. Once the function of waterproof is bad, the rear view camera would be non-water-tight.

5. Interface
At present the commonly used interfaces are: RCA, BNC, air plug, there is a small part of the S terminal. The most professional aviation plugs (set of power, ground, signal one), the shock resistance, anti-interference ability, bending. Concerning the install structures, other interfaces can not be compared, it is also the preferred products for the depot.

All in all,Select car rear view camera from the above-mentioned tips, the most important is to observe the chips and the function of waterproof. Of course the most important is to look at the actual image displayed by the back up monitor.

2010年8月2日星期一

Protect Your Vehicle with Car Camera

Have you ever thought of to ensure the safety of your car and fit a camera in your car? If not, you really should be considering the safety of your car. Car camera can help protect against theft and damage ofyour valuable vehicles. Vehicle crime is a serious problem, at present, with the car stolen or destroyed, millions of this events occured every year.

Some car drivers from the joy of driving to the ground and dumping PV Puma let you pick up the confusion. Other professionals resprayed by credit card, shipped to another country. In other cases, the vandals can cut your tires, your car spray paint graffiti, or just a crowbar attack it. In both cases, the installation of putting a spy camera in the car can remind you of the theft and provide evidence to catch the perpetrators.

You may have a spy camera installed in your car. It allows you to monitor and record any activities, and around the Puma store your vehicle, you can remind you of any attempt to steal or damage it. Another option is to install a camera to track your car with the tiny Global Positioning System equipment. With this combination, you can keep your vehicle anywhere on the label.

You are only in your car for the location of your car hidden camera. It then wirelessly transmit a feed no matter what you choose and / or record all the Puma outlet in the memory card or digital recording equipment in your vehicle location.

So, 'the best place to hide in your car of a camera. Popular choice is rear view mirror, dashboard and rear seat cushion.

One of the simplest type is the rear view mirror monitor . You just clip to your rearview mirror, it monitors your entire car interior. These can be rotated to provide both internal and external need to see your car. This camera is very small and light. You can just paste it into your dashboard model. These from your lighter socket and record to memory card power. 2 Gigabyte SD card, for example, can store up to 8 hours of video.

Another complex feature is a motion sensor camera. These are used in automobile sales Puma shoes, because they are only a sound recording, some motion detection in the camera's view. This type of camera is a great energy saving device. It sat quietly with minimal power, but as long as it senses that its campaign, which began recording and / or transmission. Puma Sales

Other options include automotive night vision camera. These are very useful, many thefts and attacks at night.