A solid-state transmitter monitoring control protection circuit and its control method

Abstract

The invention discloses a solid-state transmitter monitoring control protection circuit and a control method thereof. The circuit includes a main ARM processor, a sub-ARM processor, a transmission pulse drive circuit, a transmission pulse detection circuit and a transmission pulse control circuit; the main ARM processor In response to the control request of the host computer or the power amplifier link for the transmission protection pulse, the transmission pulse drive circuit is equipped with two-stage RS-485 chips, which drive one transmission protection pulse into two-stage multi-channel transmission protection pulses, and the transmission pulse control circuit outputs transmission protection Pulse control signal; the RS-485 chip of the transmission pulse detection circuit converts the transmission protection pulse into a logic level and outputs it from the RO terminal, and the sub-ARM processor detects the transmission pulse width and duty cycle. The invention decouples the main control logic and the pulse detection task, can avoid the influence of frequent interruption of pulse detection on the main control logic, and can meet the real-time requirements and driving ability requirements of the power amplifier link for transmitting protection pulses.

Description

A kind of solid state transmitter monitoring control protection circuit and its control method technical field The present invention relates to transmitter control technical field, be specifically related to a kind of solid state transmitter monitoring control protection circuit and its control method. Background technique Transmitter monitoring and control protection unit is the unit of state monitoring of transmitter and transmission protection pulse control, mainly Complete the detection and control of transmission protection pulses, provide transmission protection signals for the power amplifier chain, and at the same time be responsible for responding to the control of the host computer command, collect the status information of each unit module, and report the transmitter status information to the upper computer in real time. Block state for control protection. [0003] The transmission guard pulse is a necessary signal for the power amplifier chain of the tran...

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Problems solved by technology

The traditional emission protection pulse drive circuit usually uses AM26C32 for level conversion, and then uses multiple AM26C31 to drive and convert into multiple differential signals. It needs to use two chips, AM26C32 and AM26C31, and the peripheral circuit is relatively complicated.

[0004] The traditional pulse detection circuit uses AD sampling and is detected by a single-chip microcomputer. Since the single-chip microcomputer also needs to undertake other real-time tasks, it may cause a large delay in pulse detection, which limits the expansion ability of the control protection unit. At present, there is a lack of real-time and versatility. few technical solutions

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