DLP technology helps rural primary and secondary school distance education projects

Recommendations for purchasing educational projectors: good quality, easy maintenance, strong dustproof, low cost of ownership

DLP technology helps rural primary and secondary school distance education projects

The Rural Elementary and Middle Schools Distance Education Project (hereinafter referred to as the Nongyuan Project) is a project implemented by the Ministry of Education in 2003 to select some provinces with a relatively late education modernization process to implement pilot projects. Resources to narrow the gap between urban and rural education, so that rural students also enjoy the right to education.

In the Nongyuan project, the school is equipped with a series of equipment such as projectors, computers, electronic whiteboards, and creating an interactive teaching environment is an important part of the project. Since most of the schools targeted by Nongyuan Project are located in remote mountainous areas, the poor classroom conditions have become the biggest challenge for the use of projectors. To work for a long time in an environment where dust, humidity and temperature are not ideal, and to ensure clear picture quality and stable image, the task of the projector is far more difficult than imagined. Since 2004, the Anhui Nongyuan Project has provided more than 2,000 DLP technology projector products to rural schools in the province, among which Sharp DLP projectors have the largest proportion, as high as 1100. After the implementation of this project, it was widely praised by teachers and students in Anhui Province, reflecting the goal of the Nongyuan Project to promote quality education.

Rural schools in Anhui Province have harsh environments and many dust problems

Mr. Wu worked in the Technical Equipment Department of the Provincial Electrification Education Museum of Hefei City, Anhui Province. Since 2004, the Anhui Province started the Nongyuan Project, which is to participate in the bid evaluation of related equipment procurement with colleagues. Teacher Wu said that in the entire procurement process, after the first round of screening in Beijing, all projectors will be sent to the Provincial Audio-visual Education Museum for further in-depth examination to ensure that these products can work under the harsh natural conditions of rural schools.

Teacher Wu further stated that rural schools in Anhui Province are usually set up next to highways. In addition to bringing students into and out of classrooms and bringing in dust, they also face challenges from highways. The number of trucks on Anhui's highways is staggering, and a lot of dust will be rolled up during driving, and even coal and sand will be sprinkled during transportation, which further aggravates the school's dust problem. The challenges of harsh natural conditions increase the difficulty and demand for professional maintenance and repair of the projector. Therefore, the power-saving teaching center is very optimistic about the projector's ease of maintenance or even maintenance-free features.

Sharp DLP projector success

Since 2005, Anhui Provincial Electrification Education Museum has equipped Sharp DLP projectors for the Nongyuan Project and received positive feedback. On the one hand, Sharp DLP projectors have high brightness, high definition, and sharp text, which can meet the needs of teaching in large classrooms and are widely praised by teachers and students. On the other hand, Sharp DLP projectors are superior in dustproof performance, easy to maintain, and have low total cost of ownership. They are also affirmed and favored by the purchasing staff of the Provincial Electricity Education Museum. Teacher Wu and colleagues analyzed the maintenance records of projectors equipped with projectors in Anhui Province in the past and pointed out that projectors using DLP technology require significantly less maintenance than LCD projectors. In the face of the harsh dust environment, Sharp DLP projectors have very few maintenance applications, which makes Teacher Wu and colleagues in the Technical Equipment Department of the Audio-visual Museum feel relieved.

They also found that DLP projectors are not as sensitive to dust as LCD projectors and do not require frequent replacement of dust filters, eliminating the need for later maintenance and possible negative effects, while also saving replacement and cleaning filters The cost of the network reduces the cost of ownership. The frequency of projector maintenance and repair depends largely on the ability of the projector to adapt to dusty environments. The DLP projector can be designed with a fully enclosed optical machine. The DLP chip and other components can be protected. Dust is difficult to touch the core of the optical path, thereby ensuring that the image quality is protected from dust and remains consistent. In contrast, because the LCD projector panel needs heat dissipation, an open system must be used to introduce external airflow to cool the panel. Dust is therefore easy to enter the optomechanical system and adhere to the core panel. After long-term accumulation and high temperature, it is easy to produce irreparable chemistry Changes cause serious damage to the picture quality and the machine itself, affecting the quality of teaching. At this time, the LCD panel can only be replaced by more than half of the cost of a brand new projector.

Recently, the Technical Equipment Department of the Audio-visual Education Center once again conducted a sampling analysis for the equipped projectors. The teachers said that the text of the DLP projector used is very clear, which is very suitable for teaching demonstration. Even after more than two years of use, the color and brightness of the display have not changed, and the harsh environment has no obvious adverse effects on these DLP projectors.

After comprehensive analysis of factors such as performance and price, they believe that DLP projectors are more suitable for the actual situation in Anhui Province. In view of the above factors, the purchase volume of Sharp DLP projectors by Anhui Provincial Audio-visual Education Museum has increased year by year. In just a few years, the cumulative number of Sharp DLP projectors has exceeded 1,000. In the third large-scale procurement of the Anhui Nongyuan Project, 618 projectors all used Sharp's DLP projector products.

Procurement suggestions for educational projectors: good quality, easy maintenance, strong dustproof, low cost of ownership,