Onboard control system capable of controlling intelligent audio-video device

Abstract

The invention discloses an onboard control system capable of controlling an intelligent audio-video device. The system is characterized by including: a wireless communication module, a GPS module, a driving data acquisition module, a calibration module, an intelligent audio-video device control module and a processor. The GPS module acquires a user's current position and map road condition information, and calculates a predicted time for going through each road section and a predicted time for arriving at home. The driving data acquisition module acquires a real-time driving velocity through a CAN total interface line so as to obtain an actual time for going through current road section. The calibration module conducts ratio calculation between the actual time for going through the current road section and the predicted time for going through the current road section, and a difference value coefficient P is obtained. The processor receives the predicted time for arriving at home from the GPS module and P value from the driving data acquisition module, calculates the predicted time for arriving at home after calibration, and based on a preheating time provided by the intelligent audio-video device control module, compares the preheating time with the predicted time for arriving at home after calibration, and transmits a preheating control instruction through the wireless communication module based on a comparison result.

Description

technical field [0001] The invention relates to a vehicle-mounted control system capable of controlling intelligent audio-visual equipment; it connects to the mobile Internet through a vehicle-mounted home control module, interacts with a smart home control terminal, and completes the management function of home equipment. system. Background technique [0002] With people's continuous pursuit of quality of life, the requirements for home audio-visual enjoyment are also getting higher and higher, and the number of audiophiles is also increasing year by year. Among the many audio-visual equipment, take the "amplifier" as an example. In the audiophile circle, the tube tube, which seems to be outdated, is highly respected and loved by many audio enthusiasts. Why is the tube tube so irreplaceable? What about status? First of all, let's take a look at what is a "tube amplifier". [0003] The so-called "amplifier" is the common name of the tube amplifier in the audio industry. ...

AI Technical Summary

Problems solved by technology

[0017] 1. There is a discrepancy between the sending time of the preheating amplifier control command and the actual arrival time, resulting in too long preheating time of the amplifier, wasting energy, and shortening the life of the amplifier

Or the warm-up time is too short, and the user has not yet reached the ideal state at home

[0018] 2. The navigation information is displayed on the center console, and the driver needs to look away, causing driving danger

[0019] 3. The control buttons are on the center console, and the driver needs to look away, causing driving danger

Due to the influence of ranging delay, climate change and geographical magnetic field, there is an error in GPS positioning accuracy. If the error between the satellite clock and the user clock is 10ns, it is equivalent to a pseudo-range error of 3m

The error of GPS long-distance speed measurement is relatively large, and the error rate can reach more than 4%.

[0021] 5. The GPS signal is unstable. When encountering a weak signal or entering a tunnel, the real-time speed cannot be obtained, resulting in an inaccurate estimate of the estimated arrival time

[0022] 6. The estimated arrival time of the navigation is inaccurate, and the actual arrival time is often closely related to the road conditions. The traditional optimization method is to combine the real-time road conditions of the electronic map to select the optimal route. However, the electronic map can only obtain the current road conditions, and in the driving process The road conditions will change, so the pre-calculated estimated arrival time is not accurate enough

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