Enabling Device Logic Circuit for Safe Drive Signal Generation
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Solution Overview
Problem
Existing systems for providing drive signals to electrical loads lack flexibility and safety features, particularly in enabling or disabling electrical machines, which can lead to safety-critical faults due to short circuits and require additional electrical supplies for activation and deactivation.
Innovation Solution
An apparatus comprising an enabling device and an activating device that receives input signals to output drive signals, with the activating device capable of generating an operating voltage and selectively activating/deactivating the enabling device, utilizing logic circuits with inverters to ensure correct signal output and reduce the risk of safety-critical faults, and can be powered exclusively by the enable signal for efficient operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing systems are used to provide drive signals to electrical loads, then the system structure is simple, but the system lacks flexibility and safety features, and may lead to safety-critical faults
Solution Approach 1:
The system is divided into distinct functional modules: an enabling device with logic circuits (including inverters) for signal processing, and an activating device for control. This segmentation allows each module to perform its specific function reliably while maintaining overall system manageability despite increased complexity.
2Ease of operation
If additional electrical supplies are added for activation and deactivation, then the activating function is improved, but the electrical supply requirements increase
Solution Approach 1:
The enabling device serves multiple functions: it processes input signals through logic circuits, generates appropriate drive signals, and enables or disables output to the electrical load. This multi-functionality reduces the need for separate dedicated circuits for each function, thereby reducing overall electrical supply requirements while maintaining full activating capability.
Solution Approach 2:
The enabling device uses its own internal power consumption to control the enabling/disabling state of the output. The logic circuits and inverters within the enabling device automatically manage the signal flow based on their input states, eliminating the need for additional external control power supplies.
3Reliability
If logic circuits with inverters are used, then the correctness of drive signal output is improved, but the device complexity increases
Solution Approach 1:
The system employs inverter circuits that logically invert the input signals before outputting drive signals. This inversion mechanism ensures that incorrect signals are prevented from being output, as the double inversion (through complementary logic circuits) guarantees signal correctness. The increased logical complexity is justified by the significant improvement in signal reliability and fault prevention.
Data Source
AI summary
Apparatus for providing at least one drive signal for an electrical load, comprising: an enabling device adapted to receive at least one input signal and, based on the at least one input signal, to output, for example at least temporarily, the at least one drive signal, wherein the apparatus further comprises an activating device adapted to selectively activate or deactivate the enabling device.