澳洲的职业评估机构ACS 要的职业推荐信
Letter of Recommendation
(Date)
It is my pleasure to write this reference for Mr. Ting Song born on Nov,20th 1970 who has been working as a full time senior IT supervisor responsible for our network security at our Information Technology & Security Department since March 2003 and till present.
Shanghai Jiaoyun Kumho Passenger Transport Co., Ltd. Founded in 1996, delivered by the Shanghai Corporation and South Korea Kumho Construction Co., Ltd. joint venture established operate highway passenger transport. One billion yuan in registered capital. Is the first city to enter high-speed passenger transport industry, provinces and cities involved in the joint venture high-speed passenger transport. At present, the company has opened between Anhui and Jiangsu, Zhejiang and other places more than 30 lines, more than 100 trips. In 2001, passenger transport industry in Shanghai took the lead through the international standard ISO9001: 2000 quality certification, and achieved good economic and social benefits. Since 2001, the per capita earning profits for five consecutive years more than 100,000 yuan, and Shanghai Model Unit received five consecutive honor. In May 2009, the company was named in Shanghai "three-star safety credit" enterprise.
Mr. Ting Song first graduated from XinJiang Radio and Television University with a major of computer application in 1987 and then completed bachelor degree in the same area of study in 1991. Given his educational background, and his field of study recognized the work experience, who have been employed as our computer systems and network security experts. Over the last three years with this company, Mr. Ting Song has successfully accomplished a number of important projects. The details of some of the projects he has completed are listed as follows for reference:
1. GPS-based Vehicle Navigation and GPRS Network Monitoring
Positioning and navigation control system includes:
1. Car Terminal (including micro-industrial computer, touch screen, GPS receiver module, GPRS communication module and power supply, etc.)
2. Monitoring Data Center DSC (TCP / IP network server).
Chosen Tianbao (Trimble) the company's Lassen SQ / IQ series GPS receiver module. The module supports data formats are TSIP and NEMA0183, in the current software systems, commonly used NEMA0183 format. NEMA 0183 agreement allows the signal source through a twisted pair serial communications data to be sent to one or more receiving end.
Micro-industrial computer
GPS module data through RS-232 serial port directly to the micro-industrial computer, industrial computer running trough the electronic map software, it will show the vehicle's current position and all the major geographic location. Mini Industrial Computer not only has all the features ordinary computers, and has a high level of integration, small size, light weight, easy installation.
GPRS communication module
Car terminal embedded GPRS communication module, it will GPS receiver module real-time location information sent to the remote database monitoring center to realize all the monitoring and scheduling of vehicles.
Monitoring and scheduling system, due to cover the monitoring, real-time scheduling operations, vehicle capacity, refresh rate and so on, select the appropriate wireless data link and electronic maps, and to develop appropriate business software. GPRS-/ IP protocol / The TCP / UDP protocol stack can achieve real-time data exchange, but also in the existing public wireless communication systems maximum bandwidth, as well as the popular short message transmission compared to the same data length, the same time interval , its communication cost is such a Short Message January 6 or less. This article uses the power company's Shenzhen-Hong Kong GPRS wireless data transmission H7000's GPRS network connection and data transmission of wireless communication modules. When the wireless communication module of the GPRS network to log on, it will be real-time GPS receiver module location information is sent to the monitoring and scheduling the use of remote monitoring center.
Monitoring center is a public network with the IP address of the web server, through the preparation of data center monitoring system software (mainly by the communication module, the electronic map database, vehicle information database, etc.), monitoring center to receive real-time vehicle terminal via wireless communication module to send to the data and conduct analysis and storage of all the vehicles the location and state of motion are displayed on the electronic map. And tips for different situations and alarm.
Monitoring centers WebGIS technology, the use of C / S or B / S architecture, monitoring center, and data server in a different physical location. The reliability of the equipment data server and the corresponding operations, maintenance requirements high, using the current. NET technology, network services, through local monitoring center to access the data server to obtain data, send orders.
Using Microsoft Visual C #. NET as a development platform, using GPRS module Shenzhen Hongdian the dynamic development of libraries, the dynamic development library provides a GPRS wireless communication process used in some of the operational functions. Development Kit to the important structured as follows:
1.Terminal registration information module interface structure:
typedef struct GPRS_USER_INFO
｛
char m_userid [12]; / / end Module Number
uint32 m_sin_addr; / / terminal blocks access to Internet, proxy host IP address of
uint16 m_sin_port; / / terminal blocks access to Internet, proxy host IP port
uint32 m_local_addr; / / terminal module within the IP address of mobile network
uint16 m_local_port; / / end module in the mobile net IP port
char m_logon_date [20]; / / end module Login
char m_update_date [20]; / / end Module Update Time
uint8 m_status; / / Terminal Module Status
｝user_info;
2. Packet Interface Structure:
typedef struct GPRS_DATA_ RECORD
｛
char m_userid [12]; / / end Module Number
char m_recv_date [20]; / / received packet time
char m_data_buf [1024]; / / store received data
uint16 m_data_len; / / receives the data packet length
uint8 m_data_type; / / received packet type
｝data_record;
2. Video Conference System
This is our company's project to replace the old video system, according to Mr. Song and his hard-study video conferencing systems. So that we get more security, functionality and higher performance improvement. This project has become our company's products.
Use of Huawei 3COM (H3C) of the MCU and video terminals, video conferencing system's security, stability and reliable. Uses proprietary embedded operating system, open a small, effective to prevent infection. Safety considerations, equipment into the implementation of user rights management, and have password protection. 608