CN103064327A - Main control unit adopting digital signal processor (DSP) - Google Patents

Abstract

The invention relates to a main control unit adopting a digital signal processor (DSP). The main control unit adopting the DSP comprises the DSP, a reset circuit, a real-time clock system, a flash memory, a ferroelectric RAM (FRAM), an R232 communication interface, a complex programmable logic device (CPLD) and an execution circuit. The main control unit adopting the DSP is characterized in that the DSP is in both-way connection with the flash memory, the FRAM, the R232 communication interface and the CPLD, the reset circuit and the real-time clock system are both connected with the DSP, the CPLD is in both-way connection with the execution circuit, the R232 communication interface is in both-way outconnection with a monitor 1, a monitor 2 and a remote control interface, and the CPLD is in both-way outconnection with a panel display and in one-way outconnection with a signal generating plate, a frequency synthesizer and a standard source. The main control unit adopting the DSP has the advantages of being stable in system, fast, and large in information throughput.

Description

Adopt the main control unit of dsp chip

Technical field

The present invention relates to a kind of main control unit, particularly a kind of main control unit that adopts dsp chip.

Background technology

Dsp chip is the core of control, and its Main Function is that gauge tap machine, standby usage are selected and conversion; Collect the alarm status of two cover monitors, by processing ruling, produce ALM, control active and standby machine conversion or shutdown; Interface with the telepilot control terminal is provided.Existing primary controller core processor is made of MCU or Arm mostly, at system stability, and arithmetic speed, and all be not so good as DSP on the information throughput.

Summary of the invention

Needs in view of application and the real work of new technology the invention provides a kind of main control unit that adopts dsp chip.Concrete technical scheme is, a kind of main control unit that adopts dsp chip, comprise DSP, reset circuit, Real Time Clock System, FLASH, FRAM, R232 communication interface, CPLD, executive circuit, it is characterized in that: DSP is two-way connection FLASH, FRAM, R232 communication interface, CPLD respectively, reset circuit, Real Time Clock System connect respectively DSP, the two-way connection executive circuit of CPLD; The R232 communication interface is two-way outer connection monitoring device 1, monitor 2, Remote Control Interface respectively, the two-way outer connection Display panel of CPLD, and version, frequency synthesizer, standard source occur in unidirectional outer connection signal; Its system flow divides following steps,

⑴, initialization

⑵, keying interrupt

Interrupt such as unkey, then enter the status data that receives monitor, have interruption then to enter the keying handling procedure, then enter summary data and send maintenance calculations machine and panel to;

⑶, warning

Send maintenance calculations machine and panel to as then entering summary data without warning, have warning then to enter the alarming processing program, then enter summary data and send maintenance calculations machine and panel to;

⑷, return

Returning keying interrupts.

Technique effect of the present invention be system stability, fast, information throughput is large.

Description of drawings

Fig. 1 is circuit block diagram of the present invention.

Fig. 2 is system flowchart of the present invention.

Embodiment

As shown in Figure 1, 2, DSP adopts the TMS320C6713 chip, and clock source adopts the crystal oscillator of 20MHz, real-time clock adopts the DS12CR887+33 chip, and the RS232 serial port chip adopts TL16C754B, and driver adopts MAX232, select asynchronous mode, communication baud rate is 9600bps.DSP is two-way connection FLASH, FRAM, R232 communication interface, CPLD respectively, and reset circuit, Real Time Clock System connect respectively DSP, the two-way connection executive circuit of CPLD; The R232 communication interface is two-way outer connection monitoring device 1, monitor 2, logical control interface respectively, the two-way outer connection Display panel of CPLD, and version, frequency synthesizer, standard source occur in unidirectional outer connection signal, and its software flow divides following steps,

⑴, initialization

⑵, keying interrupt

Interrupt such as unkey, then enter the status data that receives monitor, have interruption then to enter the keying handling procedure, then enter summary data and send maintenance calculations machine and panel to;

⑶, warning

Send maintenance calculations machine and panel to as then entering summary data without warning, have warning then to enter the alarming processing program, then enter summary data and send maintenance calculations machine and panel to;

⑷, return

Returning keying interrupts.

Wherein, keying handling procedure major function is to make corresponding action according to the control panel that detects or the instruction of maintenance calculations machine, such as: selective system mode of operation, carry out the parameter setting, produce plate, frequency synthesizer and standard source to signal and send instruction and set mode of operation, recession distance, fine delay, the output frequency of setpoint frequency compositor etc.

Alarming processing program major function is according to the alarm status of the two cover monitors of collecting, and by processing ruling, produces ALM, controls active and standby machine conversion or shutdown.

Circuit theory is to adopt to interrupt and the query communication mode, receive the keying instruction of Display panel, communicate by RS232 serial ports and Remote Control Interface, receive the steering order of maintenance calculations machine, the working state of system signal that reception comes from monitor, send after treatment various instructions, the selective system mode of operation, carry out the parameter setting, carry out the control function of Display panel, by executive circuit control TACAN, the switching on and shutting down of DME, standby usage is selected and the monitoring bypass, local and remote state is changed, lamp test etc., and provide the indication of various duties by Display panel, give the maintenance calculations machine with working state of system and environmental monitoring parameter, data bus by the CPLD expansion produces plate to signal, frequency synthesizer and standard source send instruction, set mode of operation, the recession distance, the output frequency of fine delay and frequency synthesizer.

Claims (1)

1. main control unit that adopts dsp chip, comprise DSP, reset circuit, Real Time Clock System, FLASH, FRAM, R232 communication interface, CPLD, executive circuit, it is characterized in that: DSP is two-way connection FLASH, FRAM, R232 communication interface, CPLD respectively, reset circuit, Real Time Clock System connect respectively DSP, the two-way connection executive circuit of CPLD; The R232 communication interface is two-way outer connection monitoring device 1, monitor 2, Remote Control Interface respectively, the two-way outer connection Display panel of CPLD, and version, frequency synthesizer, standard source occur in unidirectional outer connection signal; Its system flow divides following steps,

⑴, initialization

⑵, keying interrupt

Interrupt such as unkey, then enter the status data that receives monitor, have interruption then to enter the keying handling procedure, then enter summary data and send maintenance calculations machine and panel to;

⑶, warning

Send maintenance calculations machine and panel to as then entering summary data without warning, have warning then to enter the alarming processing program, then enter summary data and send maintenance calculations machine and panel to;

⑷, return

Returning keying interrupts.

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