CN2158109Y

CN2158109Y - Controlling apparatus of signal transmission one-chip machine for master-slave computer system

Info

Publication number: CN2158109Y
Application number: CN 92205656
Authority: CN
Inventors: 郭新
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-28
Filing date: 1992-04-28
Publication date: 1994-03-02
Anticipated expiration: 2002-04-28

Abstract

The utility model relates to a controlling device of signal transmission single-chip machine for master-slave computer system, which is a computer control device. The utility model adopts a single-chip computer whose inner side is provided with a memory and a serial communication port as a control centre; the whole device is arranged on two double-sided printed boards. The utility model has the advantages of convenient assembly, convenient adjustment, convenient arrangement for functions and convenient loop selection. The utility model is suitable for various transmission control systems.

Description

Controlling apparatus of signal transmission one-chip machine for master-slave computer system

It is the device that transmission is controlled to the host slave system signal of control center with the single chip microcomputer that the utility model belongs to a kind of.

It is control center that the more master slave system signal transmission control unit of present application adopts the multi-disc microcomputer more.With parallel data line transmitting switch amount, and the I/O address space is limited, so control loop is less, the simple and complex structure of function, volume is big, cost is high, antijamming capability is not strong.

The development the purpose of this utility model is to provide the host slave system signal transmission controlled by single chip microprocessor that a kind of control loop is more, function is complete, volume is little, cost is low, antijamming capability is strong device.The user can form various principal and subordinate's machine signal transmission control application systems rapidly according to different requirements, shortens the development time.

Describe content of the present utility model in detail below in conjunction with accompanying drawing 1.

Accompanying drawing 1 is the theory diagram of this device.It is core with the single-chip microcomputer, by serial conversion latch cicuit, switch display, several parts of gating amount decoding scheme and keyboard circuit are formed, and are made in respectively on two perfecting brush boards, are convenient to assembling and selection function adaptive system scale, make the apparatus structure compactness, volume is little.

The utility model has following feature:

1, adopts the control center of single-chip microcomputer as device.

2, the single-chip microcomputer built-in ROM memory and the serial communication interface of Cai Yonging.

3, adopt serial communication interface output switching value, through conversion rear drive switching device.

Above the single-chip microcomputer of said built-in ROM memory and serial communication interface can be any model.

The single-chip microcomputer that the utility model adopts is the model that has serial communication interface and ROM memory.Because this device adopts serial communication interface output switching value, and need not the Add-In memory, make that 24 bit parallel I/O mouths of single-chip microcomputer can be as the output input channel of other electric weight, and the binary code of 24 parallel I/O mouth output can produce 2 behind the gating decoding scheme ²⁴Individual gating amount, after even single-chip microcomputer is assorted the program and data memory of 64K, parallel I/O mouth of 8 still can be arranged, can produce 256 gating amounts, and this device is serial to be changed latch cicuit and switch arrays are divided into several modules, comply with requirement concrete when using, the quantity of decision module, carry out different functions, and with its combination, and because the transfer rate of single-chip microcomputer serial communication interface can reach 1Mbt/s(is exportable nearly 1000000 serial data p.s.), after the conversion of serial conversion latch cicuit, can drive a large amount of switching devices, thereby in application visual concrete condition, arrange the switching device in each module flexibly, adapt to the different handset quantity and the various application systems of multi-functional requirement.

The effect of the utility model in principal and subordinate's machine signal transmission system is with the general multi-disc machine parallel port output switching value of the serial communication interface output switching value replacement of single-chip microcomputer, in application, as long as be equipped with different signal transmission, just can form various monolithic processor controlled principal and subordinate's machine signal transmission systems, it is the stronger signal transmission control unit of a kind of versatility, compare with general multi-disc machine control device, have advantages such as control loop is many, function is complete, volume is little, cost is low, antijamming capability is stronger.

Be that accompanying drawing (1), (2) illustrate below:

U1 is an one chip microcomputer among the figure.U2 is a gating amount decoding scheme.

U3 is a serial conversion latch cicuit.U4 is the switching device array.

U5 is a keyboard circuit.

P0 is a data bus.P1 is a serial communication interface.P2 is parallel I/O mouth.

X is that host signal source Y0-Yn is for receiving extension set.

Below application example be the speech room teaching equipment that utilizes this device composition, its system chart as shown in Figure 2, frame of broken lines is this device among the figure, its control procedure is as follows:

After system enters duty, single-chip microcomputer is carried out initialize routine, the module of will giving lessons gating amount is sent into the data register mode area that sends subroutine with complete " 1 " switching value, earlier send this gating amount by parallel I/O mouth, through the gating amount decoding scheme decoding backgating module of giving lessons, by serial communication interface transmit button amount, serial conversion latch is changed the rear drive switching device in module, and latchs this switching value again.So far system enters the state of giving lessons, and single-chip microcomputer enters waiting status.In case when having key to press on the keyboard, keyboard circuit output interrupt request singal is to single-chip microcomputer End, the single-chip microcomputer response In have no progeny, through data bus input key code, send the key routine processes, after the key end of input of certain command function, change by the order subroutine and handle, according to the functional status of order, corresponding gating amount and switching value are sent into the data register mode area that sends subroutine, after its transmission, change the state of switching device in the corresponding function module, reach the purpose of function conversion.By different keyboard operations, can realize the change of multiple duty and the combined crosswise of difference in functionality, send work state information to display by data bus and show.When work, monitor the work disorder whether occurs by the software detection system.In case the state of giving lessons occurs automatically restoring to.

Claims

1, a kind of host slave system signal transmission monolithic processor control device, by single-chip microcomputer, serial conversion latch cicuit, the switch display, circuit such as gating amount decoding scheme, keyboard circuit are formed, and its feature is being given:

(1) adopts the control center of single-chip microcomputer as device;

(2) the single-chip microcomputer built-in ROM memory and the serial communication interface of Cai Yonging;

(3) adopt serial communication interface output switching value.Through conversion rear drive switching device.