Software-Switched Output Control Circuit for Multi-Signal Controllers
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Solution Overview
Problem
Existing output control circuits in controllers lack universality, safety, and reliability, particularly in switching between digital and analog signal outputs, and there is a need for intelligentization and remote configuration.
Innovation Solution
An output control circuit with a signal input end, first and second amplification modules, a switch module, and a power module, enabled by a control unit for software-controlled switching between different signal functions, including digital, analog voltage, and current outputs, with overcurrent protection and filtration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional output control circuits are used, then the circuit structure is simple, but the universality and adaptability are poor
Solution Approach 1:
The patent implements a multi-functional output control circuit that can switch between different signal output modes (analog voltage, analog current, digital) through a single unified circuit structure. The switch module selectively connects different feedback paths to achieve multiple functions, eliminating the need for separate circuits for each signal type and thereby improving universality while maintaining reasonable complexity.
2Extent of automation
If software-controlled switching is implemented, then intelligentization and remote configuration are achieved, but the device complexity increases
Solution Approach 1:
The patent replaces manual or mechanical switching mechanisms with software-controlled electronic switching. The switch module is controlled by a microcontroller or processing unit that can be programmed to change output modes remotely, substituting physical configuration with software-based control. This enables intelligentization and remote configuration while the electronic switching implementation keeps the added complexity manageable.
3Adaptability or versatility
If multiple output signal types are supported, then the adaptability is improved, but the reliability may be compromised
Solution Approach 1:
The patent segments the output control circuit into distinct functional modules: a first amplification module for analog voltage output, a second amplification module for analog current output, and a digital output module. The switch module selectively activates only the required module based on the desired output type. This segmentation isolates potential failure points and allows each module to be optimized for its specific function, improving overall reliability while maintaining adaptability.
Data Source
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AI summary
An output control circuit (1), a controller (110), and an air conditioner (120). The output control circuit (1) comprises: a signal input end (in); a first amplification module (10), a first input end of which is connected to the signal input end (in); a first power module (40), a first input end of which is connected to an output end of the first amplification module (10), and a second input end of which is connected to a first direct-current voltage source (VDD1); a first resistor (R1), a first end of which is connected to an output end of the first power module (40); a second amplification module (20), a first input end of which is connected to the first end of the first resistor (R1), and a second input end of which is connected to a second end of the first resistor (R1); a switch module (30), which is respectively connected to the second end of the first resistor (R1), an output end of the second amplification module (20), and a second input end of the first amplification module (10); and a signal output end (out), which is connected to the second end of the first resistor (R1), and is used for outputting various types of output signals. The output control circuit can be controlled by means of software, so as to further realize intelligent and remote configuration thereof, and thereby realizing the switching of a signal output function of a controller, and improving the universality, safety and reliability of the output control circuit.