CN1605999A

CN1605999A - Computer remote control system

Info

Publication number: CN1605999A
Application number: CN 200310105321
Authority: CN
Inventors: 郭忠文; 丛艳平; 王志航
Original assignee: Ocean University of China
Current assignee: Ocean University of China
Priority date: 2003-10-11
Filing date: 2003-10-11
Publication date: 2005-04-13

Abstract

Disclosed is a computer remote control system, which includes two portions of controlled end machine box and controlling end machine box, the controlled end machine box is equipped with an electronic circuit board and a GPRS module in the casing, the casing is provided with electrical power interface and interfaces capable of connecting host computer keyboard interface, mouse interface, display card connection interface, and display interface, the circuit formed by the electronic circuit board and GPRS comprises an input processing module, a data processing module, an output module, a test module, a control module and a transmission module.

Description

The computer remote control system

Technical field the present invention relates to a kind of electronic equipment, particularly a kind of computer remote control system.

Background technology need be carried out Long-distance Control to computing machine under many circumstances, and for example computer remote is safeguarded.At present, computer remote control all realizes by software, i.e. install software in managed computer, give remote control computer with the relevant information of managed computer by network delivery, remote control computer is according to the relevant instruction of information issue that is obtained, and these instructions are passed to managed computer by network, realize Long-distance Control with this.The shortcoming of this control mode is, because this kind method realizes that by software if the Control Software of installing on the managed computer breaks down, or the operating system of managed computer breaks down, then distance host can't obtain the letter of managed computer, also just can't carry out Long-distance Control; In addition, this kind method utilizes network to realize the transmission of information, if between two LAN (Local Area Network), then to carry out the information transmission by the INTERNET net, because this Control Software is to adopt " wooden horse " mode to obtain managed computer information, generally speaking, for the angle of safety, the webmaster of managed computer unit one belongs to can not allow freely the come in and go out LAN (Local Area Network) of our unit of such software, and control procedure can't be carried out.

Summary of the invention the purpose of this invention is to provide a kind of computer remote control system, and this system does not rely on the software systems and the Ethernet of controlled machine, and control procedure is convenient, reliable.

The present invention is achieved through the following technical solutions: a kind of computer remote control system, it is characterized in that comprising controlled terminal box and control terminal box two parts, electronic circuit board and GPRS module are housed in the box body of controlled terminal box, the antenna of GPRS module stretches out outside box body, have on the box body can with the keyboard interface of managed computer main frame, mouse interface, the display card interface, interface that display is connected and power interface, in the circuit that electronic circuit board and GPRS module constitute input processing module is arranged, data processing module, output module, test module, control module and transport module are equipped with program element in the control module; In the box body of control terminal box the GPRS module is housed, the antenna of GPRS module stretches out outside the box body, and the interface that can be connected with the serial ports of control end main frame is arranged on the box body, in the main frame of control end computing machine program element is housed.

Input processing module in the technique scheme in the said circuit comprises the ADC conversion chip; Data processing module comprises dsp chip and buffer memory RAM chip; Output module comprises serial ports and keyboard, mouse interface; Test module comprises JTAG1, JTAG2 port and DAC conversion chip; Control module comprises FPGA (or CPLD) chip and EPROM chip, and transport module is the GPRS module.

The principle of work of technique scheme is: under the control of controlled terminal box program element, the simulation display image signals of controlled machine video card output carries out directly delivering to 64MRAM (frame is deposited) storage after analog to digital conversion is converted to data image signal through load module; DSP takes out view data from RAM (frame is deposited), compresses processing, delivers to after the processing in the 64MRAM buffer memory and stores; Serial ports is by sending interrupt request to DSP, the data after the compression that DSP is read from the RAM buffer memory is handled send the GPRS module to, by giving the far-end main control computer through wireless network with data transfer; The far-end main control computer restores the display image of controlled machine, send dependent instruction by keyboard and mouse, under the control of the program element of these instructions in the control end main frame, be sent to the GPRS module in the control terminal box, via the GPRS module of giving the part that links to each other with controlled machine by the wireless GPRS network delivery, the GPRS module of the part that links to each other with controlled machine sends these instructions to control module through serial ports, control module sends these instructions to managed computer by keyboard interface, mouse interface, reaches control to managed computer with this.

Advantage of the present invention is: one, owing to use the wireless GPRS Network Transmission, the distance of Long-distance Control is unrestricted; Two, because this control system is independent hardware system, as long as the video card operate as normal of controlled machine just can be used, the software of controlled machine breaks down, and does not influence the work of system; Three, be not subjected to network failure or other people influence for control.

Description of drawings Fig. 1 is a structural representation of the present invention.

Fig. 2 is the connecting relation synoptic diagram of the present invention and managed computer, control computer.

Fig. 3 is a principle of work block diagram of the present invention.

Fig. 4 is the circuit logic diagram of controlled terminal box of the present invention.

Fig. 5 is the program element process flow diagram of controlled terminal box of the present invention.

Fig. 6 is the program element process flow diagram in the control end computing machine of the present invention.

Embodiment is further elaborated the present invention below in conjunction with drawings and Examples.

The said computer remote control system of the present invention, but from the hardware aspect separated into two parts, be controlled terminal box (1) and control terminal box (2), electronic circuit board (4) and GPRS module (9) are housed in the box body of controlled terminal box, the antenna (3) of GPRS module (9) stretches out outside box body, interface (5), (6), (8) are arranged on the box body, can be connected with keyboard interface (16), mouse interface (15), the display card interface (17) of managed computer main frame respectively, as depicted in figs. 1 and 2.The interface (7) of controlled terminal box (1) is a display connection port, uses in the time of can be for debug system; This machine box also has the interface (10) of external power supply.In the box body of control terminal box (2) GPRS module (12) is housed, the antenna of this module (13) stretches out outside the box body, interface (11) is arranged on the box body (2), this interface (11) is connected with the serial ports of control computer, and the annexation of the keyboard of control computer, mouse, display and main frame is not done any change.

Main electronic circuit of the present invention is positioned at controlled terminal box, in the circuit that its electronic circuit board and GPRS module constitute input processing module, data processing module, output module are arranged, test module, control module and transport module, its course of work and circuit block diagram specify as follows as shown in Figure 3 and Figure 4:

1, load module: the ADC conversion chip is the digital rgb signal with the analog rgb conversion of signals of managed computer video card output, and the data after will changing directly are transferred to the storage of 64MRAM frame.

2, data processing module: the digital signal that dsp chip reads from frame is deposited, utilize the compression treatment technology that digital signal is compressed processing, send into the RAM buffer memory after the processing.FLASH stores the image processing program of DSP as the program storage unit (PSU) of DSP.

3, output module:

1), serial ports:, send the view data after the processing of storing among the 64M buffer memory RAM to the GPRS module by sending interrupt request to DSP; DSP is passed in the instruction that the main control computer that the GPRS module is received is sent;

2), keyboard, mouse interface: DSP pass to managed computer with the instruction that main frame is sent by keyboard, mouse interface, to reach the purpose of virtual this switch of managed computer dish, mouse command.

4, test module:

1) JTAG1, JTAG2 port: be used for DSP and FPAG are carried out program debug.

2) DAC output: Digital Image Data is converted to simulated image data passes to display and be convenient to local debugging.

5, control module:

1) FPGA (or CPLD): sequential control and sheet as above four modules select device.

2) EPROM: as the configuration ROM of FPGA.

6. transport module:

The GPRS module that can adopt the existing maturation in market is as data transmission module.

In the present embodiment, following model is used in the main components and parts suggestion of foregoing circuit: dsp chip 320C6711; FlASH chip AT29LV010A; EPGA chip EP1C3T144C8; EPROM chip EPCS1; ADC chip THS8083; DAC chip THS8134; RAM chip MT48LC8M8A2TG.

In the control module of circuit program element is installed in the controlled terminal box.Its process flow diagram which comprises at least following steps as shown in Figure 5:

The kind of a, judgement order makes a choice in initiation command, keyboard commands and mouse command;

B is if initiation command then carries out initialization; If keyboard commands or mouse command then send keyboard commands or mouse action order to controlled computer;

C, carry out A/D conversion;

D, carry out compression of images;

E, carry out image buffer storage;

F, carry out image and send.

In the control end main frame program element is installed, its process flow diagram which comprises at least following steps as shown in Figure 6:

A, user's login;

B, transmission initiation command;

C, acceptance pattern picture;

D, image restoring;

E, judge whether to finish, in this way, end operation then is not as being then to enter step f;

The order kind of f, judgement computation: be keyboard operation, or mouse action? keyboard operation in this way then sends keyboard commands; If mouse action, then judge it is to click, double-click or select, send respectively then click, double-click or select command.

Claims

1, a kind of computer remote control system, it is characterized in that comprising controlled terminal box and control terminal box two parts, electronic circuit board and GPRS module are housed in the box body of controlled terminal box, the antenna of GPRS module stretches out outside box body, have on the box body can with the keyboard interface of managed computer main frame, mouse interface, the interface that display card is connected, interface that display is connected and power interface, in the circuit that electronic circuit board and GPRS module constitute input processing module is arranged, data processing module, output module, test module, control module and transport module are equipped with program element in the control module; In the box body of control terminal box the GPRS module is housed, the antenna of GPRS module stretches out outside the box body, and the interface that can be connected with the serial ports of control end main frame is arranged on the box body, in the main frame of control end computing machine program element is housed.

2, computer remote control system according to claim 1 is characterized in that in the circuit of controlled terminal box, its input processing module comprises the ADC conversion chip; Data processing module comprises dsp chip and buffer memory RAM chip; Output module comprises serial ports and keyboard, mouse interface; Test module comprises JTAG1, JTAG2 port and DAC conversion chip; Control module comprises FPGA (or CPLD) chip and EPROM chip, and transport module is the GPRS module.