1. bicycle mileage watch price

The price of cheap mountain bicycles may be one or two hundred yuan, but if you want to buy one, you can receive a Step frequency, speed, heartbeat sensor, and another GPS trajectory recording function.Can make people break the glasses.

2. The characteristics of the bicycle -specific code watch

The special code watch of a bicycle is actually a very practical accessory. The simplest code watch can display the speed and time in real time in real time. The additional additional functions may help you calculate the mileage and time of a single driving.

Simple entry -level code watch ranges from 100 yuan to 400 yuan. If you deliberately find a wired code watch, maybe you can get it within 200 yuan, but it is a bit ugly.

Third, the price is expensive.

To put it simply, the more expensive the slogan, the more functions, and the more functions may be so that you don't know how to use it.You can communicate with your mobile phone, you can communicate with a bunch of APPs, you can connect with a lot of sensors, and display the information of riding in real time. These are just "obvious" functions.Most of the sensors, such as stepping frequency, speed, power meter, and ANT and Bluetooth dual -frequency receiving, basically there is no signal of the sensor.The performance of this code watch is already the top level.

Fourth, is it necessary to buy road bicycle codes?

1. Powerful recording ability

If you plan to conduct efficient training in a scientific way, professional code tables must be indispensable.The professional code table can collect the message from the sensor, transform the physical energy into the actual data, and can also export these data to analyze it in other ways. This is the biggest difference between the expensive and cheap code table.The price of a code watch with a price of about 1,500 yuan to 2,000 yuan, or even the price exceeds 2,000 yuan, in addition to integrating peripheral sensors, the additional added value lies in the "record" ability of the device.

2. Not only records, but also analysis and operation

Some expensive code tables can not only display information such as stepping frequency, heart rate, power and other information in real time.At the moment of the record, it will be completely recorded by the code watch. This information is actually meaningful for data analysis.If you just use information such as speed, frequency, heartbeat and other information when riding a bike, in fact, you only use a small part of this code.

3. navigation function

The main function of the Bicycle code watch positioning system is to accurately locate the coordinates of the signal device. The Bicycle code watch with satellite positioning does not even need to rely on the speed sensor. You can calculate your movement speed by positioning the satellite alone.The function of satellite positioning can usually ensure the accuracy of the trajectory records, and these systems are also applied to navigation devices for vehicles.Because there is a satellite positioning, the possibility of adding navigation functions to the code watch is given. As long as the code watch is added to the map of the road, it can be navigated with a certain airpoint operation.Essence

1. The working principle of the Bicycle code watch

The principle of the bicycle sheet is that the sensor captures the information brought by the inductive magnet when the car ring rotates, transmits it to the gauge through the sensing line, and the host code table is calculated to calculate the speed, mileage and other information after this process.

Popularly speaking, there is a magnet -like thing on the front wheels. There is a sensor on the front fork. The wheels turn around, and the magnet passes through the sensor once.In the wheel parameters, the code watch has calculated the speed and the journey.To put it simply, the airflow formed during the cycling process to generate induction of the wind hole of the code watch, thereby measuring the speed.

2. What is the reason for the Bicycle code watch

The bicycle codes are not allowed

1. The code table generally has only two keys. The "SET key" in the back is the setting key.Hold down the "SET key" behind the code watch for more than 2 seconds, and enter the setting mode after the screen displays "Set Open".

2. The screen displays "SIZE 2155", where the wheel value is set.Press "Big Key", the screen display "Unit Kmh", that is, the display value is "km/h".

3. Press "Big Key", the screen shows "Dist 0", which is the total mileage.Press "Big Key", the screen displays "time 00:02", that is, time.

4. Press "Big Key", the screen display "Scan OFF", that is, the scroll display mode is turned off.

5. Then go back to the "Time" interface, press the "SET key", the numbers flickered, and set the numbers according to the "Big Key".

6. After the time is adjusted, press the "SET key" again, the screen display "Set OK", and the time settings are successful.

7. Press the "SET key" behind the code watch for more than 2 seconds. The screen displays "SET Close", exit the setting mode, and then press "Big Key" to switch to time and check the setting time.

The average speed of the bicycle codes is not allowed

The biggest reason for the inaccurate speed of the bicycle codes is the incorrect setting of the perimeter of the wheels. Generally, the newly -bought bicycle sheet wheels need to be set. You need to accurately measure the size of the car, and then the code watch parameters follow the car circle according to the car circle.Settings.

The highest speed of the Bicycle code watch is not allowed

There are many reasons for the highest speed of the Bicycle code watch, but the reason is basically the same, that is, the wheels of the wheels have vibrated when the magnets of the front wheels pass through the sensor (sanitary Tube) through the code watch, such as overwhelming over the wheel, such as overwriting too much.A pit, a sudden brake, etc., made the magnet shake near the sensor of the code watch, so that the code watch thought that in this shaking time, the front wheels had turned around, so that there would be a very high high.Speed and recorded, this is normal, don't care.

Common fault inspections and maintenance of bicycle code tables

1. Check whether the distance between the magnet and the induction switch meets the requirements. If the distance is too far away, it will affect the accuracy of the speed.

maintenance method: adjust the distance between the magnet and the induction switch to the right distance.

2. The contact point of the code watch and the circuit on the seat is dirty, causing poor contact.

maintenance method: Use fine sandpaper to polish.

3. Check whether the connection line of the induction switch to the code table has internal disconnection, resulting in intermittent interruption.Checking method: Dial the multimeter to the "RX1" file, and the red and black surface needles are connected to the two electrodes on the codes. At this time, the front wheels should be turned, and the pointer of the multimeter should be swinged left and right.

maintenance method: The induction switch is normal and the connection is normal; if you do not swing or dial the line gently, the intermittent time is open, there is a breakpoint of the connection, and the connection line needs to be replaced.

4. The above are normal. Please check whether the battery of the code watch should be updated?Using the universal DC voltage V10, the battery voltage for various tables may be different.

maintenance method: As long as the measured voltage is below 60%of the original battery voltage, the battery needs to be replaced.For example, the LR44 twist battery should be 1.5V. If the measured is & lt; 1.0V, the same type of battery needs to be reduced.

5. The code watch may enter the water, causing internal line failure.

maintenance method: Open the rear cover and put the code watch for about 30 minutes at 10-20 cm from the incandescent lamp, but pay attention not to be too close, due to the high temperature damage circuit.

6. If the LCD screen of the code watch is black.

maintenance method: It means that the code watch is damaged, then you need to change the new watch.

7. Because the magnetic body of the bicycle watch is installed on the barrier, it is often in a fast rotation state, and it is often easy to change or even fall off due to touch, collision, and rubbing.

maintenance method: If it is lost, it can be self -made.The method of repairing the bicycle code is as follows: Find a small magnet (such as a magnetic door touch and a small magnet in the Headset, with small size, strong magnetic force, light weight light), a small aluminum Skin, a bottle 502 502Powerful glue. First cut the small aluminum Skin with scissors to 15X20mm; Then fold it on the position of the bar that needs to be installed (form a U -shaped); Inject an appropriate amount of "502" glue in the middle of aluminum Skin and magnets, so that the magnets and aluminum Skin are firmly stuck (about a few minutes); Adjust this magnet up and down to the right position, and inject "502 ".After drying, adjust the position and position of the induction switch, that is, the sue is successful.

1. Do you have to wear a helmet on a bicycle?

The answer is yes, you must wear a helmet when riding a bicycle.This is not only responsible for your own life security, but also responsible for the safety of others.Let's explain in detail why you need to wear a helmet for a bicycle.

First of all, the helmet is the first line of defense of the bicycle cyclist.During the cycling process, if an accident occurs, the helmet can effectively protect the head and reduce the risk of head injury.According to research, head injuries are one of the main causes of the death of a bicycle accident.The helmet can absorb the impact and reduce the damage of the impact force on the head, thereby greatly reducing the risk of death and serious injuries.

Secondly, the helmet can reduce the occurrence of cerebral vibration.Brain vibration is a common trauma of brain, which may lead to long -term health problems and even affect the quality of life.The helmet can effectively protect the head and reduce the occurrence of brain vibration.

Furthermore, the helmet can also prevent faces and eyes from being injured.In a bicycle accident, faces and eyes are the most vulnerable parts.The Bicycle helmet can cover these parts to prevent them from being hit directly.

However, although the importance of a helmet is self -evident, in actual life, many people do not develop the habit of riding a bicycle and wearing helmets.Some people think that the speed of bicycles is slow, and there will be no big things; some people feel that the helmet is uncomfortable and unwilling to wear it; others are because they are troublesome or worried that the helmet will stain their hair and don't want to wear it.

These concepts are wrong.Although the bicycle is slow, once an accident occurs, due to the effect of human inertia, the power of falling is very large, which can easily cause serious damage.Moreover, the comfort of the helmet can be improved by selecting the appropriate model and adjusting the method of wearing.As for worrying that the helmet will soil the hair, you can choose a helmet that is breathable and easy to clean.

In addition, we need to know that the choice and use of helmets are also a science.First of all, the size of the helmet should be appropriate, not too large or too small; second, the buckle band of the helmet must be firmly fixed on the head; in the end, the validity period of the helmet is generally 3-5 years. After the expiration, a new helmet needs to be replaced.Essence

2. Can't check the helmet for a bicycle

At present, there is no clear traffic regulations in my country that riding a bicycle must wear helmets.However, this does not mean that wearing a helmet when riding a bicycle is not important.

In fact, the public security traffic police department has always suggested to wear helmets while riding a bicycle.Although most cities are forced to wear helmets for people riding electric cars, riding bicycles also have certain risks.When an accident occurs, the helmet can effectively protect the head from serious damage.

In recent years, in order to improve the safety awareness of citizens and ensure the safety of the people, the Ministry of Public security has increased its efforts in terms of traffic management.Especially for people who ride motorcycles and electric bicycles, they strictly check whether they wear safe helmets that meet standards.

Although cycling has not been forced to wear helmets, it is still necessary for those who have long bicycles or often travel to bicycles.Because once a traffic accident occurs, the head is often one of the parts that are most likely to be severely damaged.

In short, although there is no compulsory request for traffic regulations to ride a bicycle to wear helmets, for their own safety reasons, it is recommended that the majority of citizens wear helmets while riding a bicycle.

1. How to choose the size of the Bicycle helmet

When choosing a Bicycle helmet size, the main basis is the size of the personal head circumference to ensure the comfort and safety of the helmet.

1. Measure the head circumference

soft ruler or tape measures are usually used for measurement.Starting from the forehead of the head, bypassed the above ears, and then returned to the forehead hairline to ensure that the ruler is placed horizontally and close to the scalp.The perimeter measured in this way is the size of the head circumference.

2. Select the helmet size according to the head circumference

Small size (S): Suitable for people with a head circumference size of 52-56cm.

Mid-size (M): Suitable for people with a head circumference size of 56-59cm.

Large size (L): Suitable for people with a head circumference size of 59-62cm.

Please note that these sizes are for reference only, and helmets of different brands and models may have their own size standards.Some brands may provide more detailed size division, such as XS, XXL, etc. to meet the needs of different head circumference.

3. Try to wear and adjust

When buying a Bicycle helmet, it is best to try several helmets of different brands and models to find the size and style that suits you best.

Bicycle helmets are usually equipped with adjustable bands and buckles, which can be tightly adjusted according to individual needs.When trying to wear, it should be ensured that the helmet is closely fitted with the head, but it is tight to cause discomfort.

After wearing a Bicycle helmet, you should check whether it causes oppression or discomfort to the head.At the same time, ensure that the ventilation holes of the helmet are reasonable, so as to keep the head dry during cycling.

4. precautions

The size of the Bicycle helmet should be avoided or too small.Excessive may not provide sufficient protection, and too small may cause discomfort and even affect security.

2. What should I do if I buy a Bicycle helmet?

If you buy a Bicycle helmet, you can take the following methods to improve the comfort and safety of wearing:

1. Adjust the internal pad

Many helmets are equipped with adjustable pads or foam pads.You can try to adjust the position or thickness of these pads to better fit your head.Some helmets can even be replaced. You can buy thicker or more suitable pads to fill excess space.

2. Use additional filling

If there is no adjustable pad inside the helmet, or it still feels too much after adjusting the pad, you can consider using additional filling to fill the space.For example, a small piece of sponge or foam that is similar to the internal material inside the helmet can be cut, and it placed on the forehead or rear head position inside the helmet to reduce the gap.

3. Adjust the headband and buckle ring

Make sure that the headband and buckle of the Bicycle helmet are adjusted to the most tight but tight state.By adjusting these parts, you can make the helmet more closely fit your head to reduce shaking and discomfort.

4. Consider returning or replacement

If the above methods cannot solve the problem, or if you feel that the size of the helmet seriously affects the comfort and safety of wearing, the best choice may be returns or exchanges.Contact sellers or manufacturers to learn about their return and replacement policies, and operate in accordance with the requirements.