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IPGATE AG · IP Portfolio A · A2
| Inventors | Heinz Leiber, Valentin Unterfrauner |
| Priority | April 18, 2011 |
| Portfolio | IP Portfolio A · A2 |
| Innovations | 5 independent inventions |
| Jurisdictions | DE — 3 patents (E128DE, E128DE1, E128DE2), 5 independent claims |
The E128 patent family comprises three divisional applications of the parent application DE 10 2011 017 436 A1 in one jurisdiction (DE): E128DE with two independent claims relating to a multi-sensor brake actuator module with integrated pedal travel detection and piston position detection, E128DE1 (DE 10 2011 123 128.9) with two independent claims relating to the integrated piston position measurement module with motor angle detection, and E128DE2 (DE 10 2011 123 162.9) with one independent claim relating to the integrated fluid level sensor. A total of 5 independent claims.
The inventions relate to the compact, modular integration of multiple sensor functions—pedal travel, engine rotation angle, piston position, fluid level—directly into the brake actuation unit on a common printed circuit board with direct connections to the ECU. These sensor solutions address key challenges of modern brake-by-wire systems: installation space optimization, cost reduction, functional safety according to ISO 26262, and OEM-scalable modularity.
The E128 patent family comprises three divisional applications of the parent application DE 10 2011 017 436 A1 in one jurisdiction (DE): E128DE with two independent claims relating to a multi-sensor brake actuator module with integrated pedal travel detection and piston position detection, E128DE1 (DE 10 2011 123 128.9) with two independent claims relating to the integrated piston position measurement module with motor angle detection, and E128DE2 (DE 10 2011 123 162.9) with one independent claim relating to the integrated fluid level sensor. A total of 5 independent claims.
The inventions relate to the compact, modular integration of multiple sensor functions—pedal travel, engine rotation angle, piston position, fluid level—directly into the brake actuation unit on a common printed circuit board with direct connections to the ECU. These sensor solutions address key challenges of modern brake-by-wire systems: installation space optimization, cost reduction, functional safety according to ISO 26262, and OEM-scalable modularity.
The compact sensor unit saves installation space, reduces the number of connectors, and lowers costs. The integrated pedal travel sensor provides an accurate electronic driver signal—essential for brake-by-wire. Direct piston position detection enables model-based pressure control via piston travel and speed. The modular PCB solution with direct ECU connection supports plausibility checks according to ISO 26262 (ASIL C/D) and is easily adaptable for various vehicle classes.
Five independent claims across three patents, covering multi-sensor PCB integration, rotary angle detection, and Hall-effect fluid level sensing.
Invention Overview
| Invention | Cat. | Description | Keyword |
|---|---|---|---|
| E128DE A1DE 10 2011 017 436 | Device | Actuating device for a vehicle braking system with sensor device arranged at least partially in the area of the piston-cylinder unit. Multi-sensor module with pedal travel sensor on a common PCB, direct ECU connection. | MS-PCB · Multi-sensor · Pedal travel · ECU integration |
| E128DE A11DE 10 2011 017 436 | Device | Actuating device additionally comprising a further piston-cylinder unit acting on a hydraulic travel simulator, arranged in the region of the first piston-cylinder unit. Covers the complete sensor integration architecture including travel simulator connection. | MS-PCB · Travel simulator · Sensor integration |
| E128DE1 A1DE 10 2011 123 128 | Device | Rotary encoder with gear-shaft target for motor angle detection. Target mounted on gear shaft transmits rotor movement; Hall-effect sensor on ECU board reads angle. Enables precise motor angle measurement without external cabling. | DW-Target · Gear shaft · Rotary encoder · Motor angle |
| E128DE1 A7DE 10 2011 123 128 | Method | Method for detecting rotational angle via target transmission to ECU. The gear-shaft target converts linear/rotational motion; the ECU system board sensor reads the angle and transmits to the control unit. | DW-Target method · Angle detection · ECU transmission |
| E128DE2 A1DE 10 2011 123 162 | Device | Hall-effect fluid level sensor with magnet in the float. Integrated directly on the brake actuator ECU board — eliminates separate fluid level sensor housing and wiring harness. | FN-Hall · Fluid level · Float · Hall sensor · ECU board |
Family Overview
| File No. | Country | Status | Type | Application No. | Filed | Grant No. | Granted |
|---|---|---|---|---|---|---|---|
| E128DE | DE | Pending | Patent (parent + div.) | DE 10 2011 017 436 | Apr. 18, 2011 | — | — |
| E128DE1 | DE | Pending | Patent (divisional) | DE 10 2011 123 128 | Apr. 18, 2011 | — | — |
| E128DE2 | DE | Granted | Patent (divisional) | DE 10 2011 123 162 | Apr. 18, 2011 | — | — |
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