Sensing driving circuit and sensing driving system
By designing a sensing drive circuit including voltage amplification sub-circuit, current amplification sub-circuit and amplitude control sub-circuit, the problem of common mode interference between sensing units is solved, and the amplification of differential mode signals and the load capacity are improved.
CN119652273APending Publication Date: 2025-03-18BEIJING BOE TECH DEV CO LTD +1
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Patent Information
- Application Number
- CN202411701430.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-03-18
AI Technical Summary
Technical Problem
The prior art cannot effectively eliminate common mode interference between multiple sensing units, resulting in a reduced load capacity of the drive signal.
Method used
A sensing driving circuit is designed, including a voltage amplifier sub-circuit, a current amplifier sub-circuit and an amplitude control sub-circuit. By eliminating common mode interference between sensing units and amplifying the differential mode signal, the load capacity is improved.
Benefits of technology
It effectively eliminates common mode interference between the sensing units, realizes amplification of differential mode signals, and improves the load-load capacity of the driving signal.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of circuit control, and discloses a sensing drive circuit and a sensing drive system.The sensing drive circuit comprises a voltage amplification sub-circuit, a current amplification sub-circuit and an amplitude control sub-circuit; the voltage amplification sub-circuit eliminates common-mode interference between a first sensing signal output by the first sensing unit and a second sensing signal output by the second sensing unit, and performs voltage amplification on the first sensing signal and the second sensing signal after the common-mode interference is eliminated to obtain a first amplification signal; the current amplification sub-circuit carries out current amplification on the first amplification signal to obtain a second amplification signal and provides the second amplification signal to the amplitude control sub-circuit, and the amplitude control sub-circuit carries out normalization processing on the amplitude of the second amplification signal to obtain a sensing driving signal. According to the scheme, common-mode interference between the two sensing units is effectively eliminated, amplification of differential-mode signals is achieved, and the loading capacity is improved.
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