Modern people have a fast pace of life and a high pressure for survival. Exercise and fitness have become an indispensable way of decompression. Green cycling has naturally become a popular fitness method. With the increasing demand for real-time data monitoring and motion data analysis by bicycle cyclists and professional athletes, a full set of intelligent riding equipment using Bluetooth Smart technology has emerged, and then the small series will use two articles to introduce in detail. technical details of these devices and scenarios.
The standard Bluetooth Smart kit developed for cyclists typically includes a heart rate monitor, a pedaling rate sensor and a wheel speed sensor. Top players also install a power meter on the crank of the bicycle to measure the power output of the player's movement. These devices collect data and send it to a dedicated Bluetooth Smart bicycle computer mounted on the handlebar or to a smartphone with the appropriate APP.
Data, data, data - important things to say three times!
For smarter training, the most important thing is the data! (Although this may be a bit unfair to the legs that are running hard...)
The bicycle computer analyzes the received data and translates it into the information the players need. The specific form, how to classify, and what information is displayed is configured by the developer to ensure that the data is maximized and displayed.
Bicycle computers can usually synchronize the riding data through the home network cloud server, so that it can be more powerfully analyzed and visualized through a more complete network or mobile APP. Therefore, the use of data can also be divided into two phases: in the middle of the ride and after the end of the ride.
Collect data and Bluetooth Smart enables real-time monitoring during cyclingThe main job of the heart rate monitor is to calculate and report the heart rate monitoring results in stages. If the device uses a Bluetooth profile (described in detail in Part 2) that stipulates that certain data items are optional, then the device can also acquire the data, such as how many kilojoules of energy it consumes, and when measuring heart rate, RR interval" and so on. The “RR interval†is the time interval between two R peaks in the ECG waveform, as shown in the following figure.
The pedaling rate sensor reports the cumulative crank revolutions along with the event timestamp, allowing the bicycle computer to calculate the current and average values ​​of the pedaling rate.
Similarly, the wheel speed sensor can report the cumulative number of wheel revolutions along with the time stamp to calculate the current and average values ​​of the wheel speed. What is more important for cyclists is that if the configuration in the bicycle computer has the function of accurately measuring the circumference of the wheel, the distance of the vehicle and the current and average values ​​of the driving speed can be measured.
Bluetooth Smart helps you achieve your training goals Some bicycle computers also perform more advanced data analysis and sensor data display during the ride. The small version of the PolarV650 can display a histogram of five heart rate intervals. During the ride, you only need to touch the screen with a light touch screen. Some cyclists (and runners) see heart rate training as one of the most important ways to improve overall performance. The histogram provides a quick and easy view of the actual load status of the athlete. All of these features are based on data transmitted in real time by Bluetooth Smart.
The time trial players strive to complete the race through the relatively short path at the fastest speed. This is also a good way to train. Xiaobian often trains on a 12-mile circular track, sometimes setting a shortest possible completion time to break his record. During the ride, I can view the current speed and average speed all the way. To break personal records, I have to achieve and maintain a certain average speed. For this I only need to compare the current speed with the average speed. If the current speed is faster, the average speed will be increased, and vice versa. This is technically easy to implement and the data is very helpful.
The power of psychological stimulation cannot be ignoredHigh quality data can both unconsciously affect us and consciously help us make decisions.
If the legs talk, they will definitely oppose, but all professional athletes believe that the psychological effect has a huge impact on sports performance. The Bluetooth bike sensor collects data and displays it on a bicycle computer, which can be extremely stimulating to the player. From the experience of Xiaobian, if the figures show that the current progress is going well, I will feel good and have more motivation to continue to maintain the results; if the data shows that I am not performing well, I will adjust more consciously to let my legs work. Reverse the status quo.
These powerful data also allow me to make better decisions in training and competition. The physical strength of the players is limited, so the physical distribution during the long schedule is especially important, including when to eat and drink. In the long distance race, the physiological feedback made by the body under huge consumption is actually very unreliable. Players need to make sure they don't move fast from the start, otherwise they will be physically weak after the race. They need to keep an eye on the distance traveled, retain physical strength for the difficult mountain roads ahead, and eat and drink at the right time, supplemented with energy.
End of the ride? No, the real analysis is just beginningAfter the end of the ride, whether the results are gratifying or terrible, the first thoughts of the exhausted players must be to quickly fall to rest. But training doesn't end there. Aspiring cyclists want to be able to export data for analysis in the future. Data can be synchronized from the bike computer to the cloud for more advanced analysis and data visualization. Below is a small series of mountain bike data analysis charts earlier this year.
Another interesting feature that Bluetooth Smart brings to the world of cycling is the ability for cyclists to directly receive and process data collected by bicycle sensors through various smartphone apps. Bluetooth Smart is currently used in almost all smartphones, so this feature is not difficult to achieve. There are already some bicycle computers on the market that use other patented wireless technologies. They also add Bluetooth Smart support to receive and display notifications from smartphones in their pockets.
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