Signify Holding B.v.

Nio Technology (anhui) Co., Ltd.

Philips Lighting Holding B.v.

Xianhui Zhang

Haimin Tao

Zhi Quan Chen

Bohong Xiao

Da Yuan

Junhu Liu

Zelei Zhou

Derek Zheng

Hui Zheng

Gang Wang

Jie Fu

Paul R Veldman

Marco Haverlag

Shu Xu

Peter Alexander Duine

Chun Yang

Liang Shi

Chao Xu

Frits Tobi De Jongh

Adrianus Johannes Stephanus Maria De Vaan

Shan Shan Wang

Yang Xu

Herman Johannes Gertrudis Gielen

Han Lu

Qiang Wei

Pieter Johannes Stobbelaar

Ze Liu

Baotian Wang

Huojun Long

Shengwei Deng

Danilo Teobaldi

Shan Zou

Jiajia Xia

Jiawang Zhong

Ken K Li

Ace Li

Liren Wu

Mingyuan Wang

Wen Ran

Tong Zhang

The invention relates to a slope brake pressure determining method and system. The method includes: a pre-braking slope estimated value is determined according to a specified cycle, where a current pre-braking slope estimated value is determined and is used as a first slope estimated value a, and a pre-braking slope estimated value of a previous cycle that is latched prior to the establishment of brake pressure is used as a second slope estimated value a; an instantaneous vehicle speed vprior to the establishment of the brake pressure is latched, a vehicle traveling distance land time tare accumulated, and an in-braking slope estimated value ais determined based on the instantaneous vehicle speed v, the vehicle traveling distance l, and the time t; and pre-braking pressure pand in-braking pressure pare determined based on the second slope estimated value aand a third slope estimated value a, respectively, initial brake pressure pis determined based on the pre-braking pressure pand the in-braking pressure p, and final brake pressure pis determined based on the initial brake pressure p. According to the invention, the brake pressure can be accurately determined.

Slope brake pressure determining method and determining system, and vehicle

The disclosure relates to a vehicle control method. The vehicle control method includes: receiving a first control instruction; sending a first output signal based on the first control instruction, where the first output signal is used to instruct a hydraulic parking system to start pressure build-up; and sending a second output signal upon the hydraulic parking system reaching a predetermined first state, where the second output signal is used to instruct an electronic parking system to start to be pulled up or released. The disclosure further relates to a vehicle control device, a computer-readable storage medium, and a vehicle. According to the vehicle control solution provided in the disclosure, a hydraulic parking system and an electronic parking system are controlled in a coupled manner in vehicle starting and stopping conditions, thereby providing a user with highly comfortable, reliable, and safe vehicle starting and stopping experience.

Vehicle control method and device, storage medium, and vehicle

The invention provides a vehicle control method and device, a computer storage medium, and a vehicle, which are applied to the technical field of automobiles. The vehicle control method includes: determining, based on first information, second information, and third information, whether a vehicle is performing a reverse parking maneuver; comparing a reversing speed with a predetermined first speed when the vehicle is performing the reverse parking maneuver; and if the reversing speed is higher than the predetermined first speed, outputting a first control signal to adjust the reversing speed such that the reversing speed is not higher than the predetermined first speed, where the first information includes information indicating that the vehicle is in reverse gear, the second information indicates an environment surrounding the vehicle, and the third information indicates that the reversing speed is lower than a predetermined second speed, where the predetermined first speed is lower than the predetermined second speed.

Vehicle control method and device, computer storage medium, and vehicle

This application relates to a vehicle control method and system, a vehicle, and a storage medium. The vehicle control method includes: when a braking system fails, activating a backup braking system, the backup braking system decelerating a vehicle by controlling a regenerative motor; when a steering system fails, implementing transverse control over the vehicle by controlling the braking system; and when a parking system fails, implementing parking by controlling a motor and the braking system to work alternately. According to this method, safety control over the vehicle can be implemented when the original braking system, steering system, or parking system fails.

Vehicle control method and system, vehicle, and storage medium

The invention relates to a method and device for driver assistance for determining habits of a driver, a computer storage medium, and a vehicle. The method for driver assistance for determining the habits of the driver includes: recognizing a vehicle working condition; recognizing a vehicle status; and determining the habits of the driver based on the vehicle working condition and the vehicle status, where the recognizing a vehicle working condition includes: performing first vehicle working condition recognition based on vehicle speed information; and performing second vehicle working condition recognition based on a combination of map information and positioning information and/or camera information. By performing working condition recognition twice, accuracy of vehicle working condition recognition can be improved and a vehicle working condition recognition result can be prevented from incorrectly and frequently switching between various vehicle working conditions. This achieves efficient and accurate vehicle working condition recognition.

Method and device for driver assistance for determining habits of driver

A tubular LED lamp designed for connection to a high frequency ballast. An electrically conductive screen is provided with an electrical connection between an internal node, such as an internal LED ground, and the screen. This provides a low impedance path5 for leakage currents which bypasses the LED string and thus prevents glow.

Conversion circuit between fluorescent ballast and LED

A lighting driver is for receiving an alternating current power supply from a fluorescent lighting ballast. A shunt device is provided for selectively shunting the power supply to implement dimming control. A detector is provided for generating a detection signal and for providing the detection signal to the control circuit to operate the shunt device. The detector has a detection circuit for analyzing a voltage at the driver input and generating 5 the detection signal accordingly, when the voltage is detected. In addition, for situations where the voltage detection does not correctly generate the detection signal, a correction circuit generates the detection signal for a time delay from the end of operating the shunt device. This prevents control stability problems at low dimming levels.

Lighting drive, lighting system and control method

There is proposed an interface circuit for connecting an electronic ballast to a lighting arrangement, in which control of a coupling configuration of the interface circuit is dependent upon a frequency of the electronic ballast. In particular, a coupling configuration of the interface circuit is controlled by a control arrangement based on the ballast frequency.

Electronic ballast interface circuit

A control circuit, of a control loop, for a lighting driver. The lighting driver is adapted to controllably connect an electronic ballast to an LED light source or lamp. The control circuit comprises a biasing circuit having an adjustable impedance. A tuning circuit adjusts the impedance of the biasing circuit so as to tune a parameter of a frequency response of the control loop and thereby of the lighting driver.

Controllable driver and drive method to connect an electronic ballast to an LED light source based on the model, type, or identity of the ballast

A retrofit Light Emitting Diode, LED, tube for connecting to a High Frequency, HF, ballast, which LED tube comprises a switchable capacitor arrangement for ensuring that the ballast does not go into over current protection mode, wherein the switching is controlled based on a desired dimming level of the LED tube. The switchable capacitor arrangement is provided in parallel with said input of said rectifier, and comprises at least a first capacitor and a second capacitor in series, and said control circuit is adapted to configure said switchable capacitor arrangement to conduct the AC power and switch at least one of the first capacitor and the second capacitor between the rectifier and the LED array to block the DC power to said LED array.

Retrofit light emitting diode, LED, tube for reducing audible noise originating from a high frequency electronic ballast

An LED driver uses a switch mode power supply either to provide a regulated LED current (in a first mode) that connects directly to the LED arrangement or a regulated LED voltage (in a second mode) to an LED output terminal. An auxiliary power supply is either based on an auxiliary secondary side (i.e. an auxiliary secondary side winding) when in the first mode, or it is based on the regulated LED voltage when in the second mode. The LED driver further comprises an input adapted to receive a standby command for the driver, wherein the main controlling unit is adapted to control the driver in the second mode when receiving the standby command for the driver. In this way, the driver has a single shared stage which can operated in a regulated current (i.e. constant current) mode to drive the LED arrangement directly or a regulated voltage (i.e. constant voltage) mode. It can adaptively change between modes to improve the standby power efficiency. When the load is turned on (e.g. a first mode), the driver may function in constant current mode, and when the load is turned off (e.g. a second, standby mode), the driver works in constant voltage mode with the output voltage stepped down so that not sufficient to turn on the LED arrangement to be driven by the driver but enough to provide auxiliary power via the auxiliary power supply, in order to improve the auxiliary power efficiency.

LED driver and driving method

The invention provides a power converter comprising: an input for receiving input power with a variable nominal mains level, wherein said variable nominal mains level falls within at least 90V to 240V; a main power switch (Q) driven by the input power, and a control circuit (Q, Q) for controlling a control current of the main power switch (Q), wherein the control circuit in (Q, Q) is adapted to sense the level of the input power and draw current from a control terminal of the power switch (Q) according to the level, and said control circuit is adapted to operate in linear region and increase the drawn current along with the increase of the level throughout the variable nominal mains level of the input power, wherein the control circuit comprises: a Darlington bridge with a first transistor (Q) and a second transistor (Q), the first transistor (Q) with a base terminal connected to a circuit position indicative of the voltage amplitude of the input power, the second transistor (Q) with a base terminal connected to an emitter terminal of the first transistor (Q) and a collector terminal connected to the control terminal of the main power switch (Q) and a collector terminal of the first transistor (Q); and a resistor network (R, R) coupled to the emitter of the second transistor (Q) for regulating the amplification of the second transistor (Q) and keep the second transistor (Q) working at linear region throughout the variable nominal mains level of the input power.

Power converter and an LED lighting circuit comprising the same

A lighting driver is for receiving an alternating current power supply from a fluorescent lighting ballast and makes use of a closed loop control of a shunt device for selectively shunting the power supply for example to implement dimming control. The closed loop control is adapted based a detected current. This enables low frequency components of the ballast current to be removed or reduced so that a smaller output capacitor is needed.

Lighting driver, lighting system and control method

A lighting controller and method has light sources which are activated for a respective lighting duration in a repeating non-overlapping sequence. The end of the lighting duration for one light source is detected for triggering the switching on of the next light source in the sequence. This provides non-overlapping control of the light sources and provides an efficient and easy to implement the required controller.

Method of controlling a lighting arrangement, a lighting controller and a lighting system

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Shanghai, China

Xianhui Zhang