Talking about Telematics System Outlook Network 2.0

It can be said that the network car 1.0 is the world that belongs to TelemaTIcs (TelecommunicaTIons + InformaTIcs). The system is based on wireless network communication technology, with the vehicle as the main body, using wireless communication technology, and connected with the external network to realize the interactive system of one-way or two-way transmission between human and external information resources. Through this system, long-distance and vehicle interaction can be achieved.

From the above figure, it is clear that the in-vehicle TelemaTIcs module (T-BOX) is the core component of the system, and it will be loaded on the vehicle to realize the connection between the vehicle and the network (now collectively referred to as the cloud). It can be said that a few years ago and even now, it is also considered a new revolution in the automotive industry.

The Telematics system mainly includes four major functions: communication, security, positioning and infotainment.

Since this chapter is mainly about the Telematics system, then Xiaobian takes one of the most typical cases: remote boot to analyze its functions, implementation and user experience.

Remote start, as the name suggests, is through the existing 3G/4G wireless network (absolutely not BT or WIFI, because these two protocols are limited by distance and obstacles, the transmission distance is only within 100 meters of the area, so it cannot be called Remote control, can only be called close-range smart key), use some smart devices, such as mobile phones, smart watches, etc. to send start commands to the car, to remotely start the car engine, remotely shut down the car engine, remotely control the car interior air conditioner after remote start of the car Temperature (for automatic air conditioning systems) and other functions.

The main process of remote start is as follows:

1. The smart device develops a user APP with a remote start function, and can send commands such as “remote start car”, “remotely turn off the car”, “remote air conditioner temperature adjustment” and the like through the APP;

2. The TSP backend server configures and connects to the user APP according to the vehicle. The TSP can then parse and deliver the remote control commands described above. The parsing is to ensure the security of the command, and the delivery is to transmit valid commands.

3. The T-BOX module in the car is responsible for receiving remote control commands sent from the TSP background. Similarly, it can also parse and issue control commands, as well as security and transport requirements. After receiving the command, the T-BOX in the car sends the control commands to the different vehicle control units (TCUs) through the CAN network.

4. The PEPS in the TCU will receive the remote control command first (assuming the vehicle is not configured with a front-end gateway), and then determine whether the vehicle meets the prerequisites for remote start. If it is satisfied, the vehicle is started and most of the TCU units will enter the remote start mode; otherwise, the remote start operation will be canceled and fed back to the user APP.

5. After the vehicle starts successfully, the air conditioner automatically opens and enters the AUTO mode. The default temperature is 23 °C. In the remote start mode, the temperature control of the air conditioner in the car can be realized through the user APP, and the adjustable temperature range is 18~29 °C.

6. In the remote start mode, if the user enters the vehicle through the key and drives the vehicle, the vehicle exits the remote start mode, and the user APP can no longer remotely turn off the vehicle. Only in the remote start mode, the user APP can also remotely turn off the vehicle, and most TCUs will also exit the remote boot mode.

7. Once the T-BOX and PEPS communication is lost, the car will also exit the remote start mode and shut down the vehicle.

The vehicle conditions for implementing the remote start function are as follows:

1. The car is equipped with T-BOX, PEPS, and TCU modules connected via CAN;

2, the car engine and most of the TCU support does not brake on the brakes;

The architecture for remote boot is as follows:

Through the architecture of the above figure, the Telematics system also reserves channels for entertainment systems such as IC and AVN. In addition to the above-mentioned remote control functions, it can also provide cloud services for smart cars, including online consultation, online music, and online. Features such as radio, so the function is very powerful.

However, it is an indisputable fact that the Telematics system has experienced a number of auto shows, and now it has begun to disappear. Even if the Telematics system is now deployed, even with remote control functions, it provides online entertainment. What is the reason for the development of Telematics?

First of all, from the autonomous car companies themselves, in order to protect their own data, they spent a lot of money to build their own data center in order to run their own TSP platform. However, in the configuration of the T-BOX, because of the increase of the cost of more than one thousand yuan, the model adopts the high-end configuration bundled sales, resulting in a low configuration rate and a small amount of loading. The business model is basically a one-year free use period. The single content of the service leads to the customer's low recognition of the Internet of Vehicles. Therefore, the owner does not buy the account at the time of renewal in the second year. Because the user's demand is not satisfied, the user's stickiness is not high, and the renewal rate is very low. As a result, the Internet of Vehicles has become a selling point for autonomous vehicle sales, rather than a high allocation and high user attraction.

Then there is the supplier side of the Telematics system. Suppliers of the TSP platform require a large amount of operating costs, but because the configuration is low and the renewal fee is relatively low, the independent car companies are reluctant to add maintenance costs again, so TSP suppliers need to find their own profit growth points. However, in the current environment, because of the lack of killer applications and publicly recognized business models, users are less accepting of the Internet of Vehicles, and investment companies are reluctant to invest in the Internet without seeing "money". .

For T-BOX suppliers (generally, it may be car manufacturers), they found that there is no benefit in the field of car networking in the short term, and will immediately consider the feasibility of investment, will not consider long-term investment, turn And the transformation into a car machine manufacturer. Therefore, in the years since the development of the Internet of Vehicles, the traditional car network suppliers have been transformed into car manufacturers, the most important end of the car networking industry: the enthusiasm of the supplier side is declining, and the sales of the car networking industry have disappeared. .

It can be said that due to the existence of bottlenecks such as business models, localized services, payment models, and of course, it is more important that the majority of customer needs cannot be effectively met, and the traditional car networking trend is also taken for granted. Some car manufacturers hope to increase the communication module to solve the problem of vehicle access through the car, but they can only provide entertainment functions, which is far from the car network mentioned in this article. The reason has already been said before, it is impossible to liberate the hands by semi-automatic driving or fully automatic driving. The entertainment function can only be the moonlight in the mirror.

Therefore, traditional car companies still have to solve the problem of automatic driving. From the security aspects provided by the current Telematics system, it is mainly active safety measures, that is, to prevent accidents. Among them, active safety measures are mainly direct and indirect, direct tire pressure monitoring, fault warning, collision alarm, airbag pop-up alarm, emergency rescue, etc., indirect one-button ICALL, ECALL and other measures, these security measures, Because it is difficult to quantify, there is a phenomenon of screaming and screaming, and it is difficult for car owners to pay for these items.

So what is the way to solve the dilemma? Netcom Auto 1.0 (Telematics System) will slowly withdraw from the historical arena. It will be followed by Netcom Auto 2.0. Xiao Bian believes that the network car 2.0 will be the world of V2X, V2X not only provides entertainment, control, communication channels, but escort for automatic driving. Through the combination of the networked car 2.0 and the autonomous smart car (with semi-automatic driving or fully automatic driving), it can become a smart car of the future.

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