Please advise everyone!

一个小白5

Please advise everyone! [Copy link]

 

I would like to ask, what technology is currently available to detect whether the ball is in bounds at a certain moment on the court?

maychang

Installing cameras at multiple angles and triangulating positioning may be a better approach.

qwqwqw2088

Need to discuss carefully.

What ball?

Photoelectric vision camera software judgment

Photoelectric sensors, pressure sensors,

Table tennis stress test failed

一个小白5

qwqwqw2088 posted on 2020-3-16 07:53 We need to discuss it carefully. What kind of ball is it? Photoelectric vision camera software determines photoelectric sensors and pressure sensors. The pressure test of table tennis balls is not good...

Volleyball, the Hawkeye system currently used internationally is too expensive and its actual application is not very common

一个小白5

maychang posted on 2020-3-16 07:37 Installing cameras at multiple angles and triangulating positioning may be a better solution.

These are some of my personal ideas (I don't know if they can be applied). Can we use a light sensor, with a transmitting and receiving device? If the ball goes into the boundary, then the receiving device will not receive the signal for a moment...

一个小白5

qwqwqw2088 posted on 2020-3-16 07:53 We need to discuss it carefully. What kind of ball is it? Photoelectric vision camera software determines photoelectric sensors and pressure sensors. The pressure test of table tennis balls is not good...

These are some of my personal ideas (I don't know if they can be applied). Can we use a light sensor, with a transmitting and receiving device? If the ball goes into the boundary, then the receiving device will not receive the signal for a moment...

maychang

A Xiaobai 5 posted on 2020-3-16 22:33 These are some of my personal ideas (I don’t know if they can be applied). Can we use a light sensor, with a transmitting and receiving device, if the ball hits the boundary...

Light sensors certainly do.

But we need to consider: the cost of placing the transmitting and receiving devices in this way, the cost and flexibility of changing the position of the sensor, how to judge when the light is blocked by objects other than the ball (such as the player's body or racket, etc.)...

chunyang

In addition to the existing high-speed video solution, laser fencing can be considered for judging the pressure line in a small field such as volleyball, but it will involve the problem of protrusions, and it may not be applicable to formal competitions. Formal competition equipment will have strict standards, and it is very difficult to change the standards.

一个小白5

chunyang posted on 2020-3-17 11:22 In addition to the existing high-speed video solution, laser fences can be considered for line judgment on a volleyball court that is not large in size, but this will involve the issue of the impact of protrusions...

You can choose to install it on the ground away from the audience seats, so it will not affect the normal game.

chunyang

A Xiaobai 5 posted on 2020-3-17 21:42 You can choose to install it on the ground away from the audience seats, so that it will not affect the normal game

In that case, it is easy for the middle to be blocked and cause misjudgment. In addition, there are billboards, press seats, coaches and substitutes seats, referees seats, etc. on the side of the field. Not only will there be a lot of misblocking problems, but there will also be problems such as equipment being bumped and causing movement and installation accuracy. If you want to solve it, as mentioned in the previous post, it will involve the management of the competition venue, which will inevitably involve the relevant venue standards, and there will be big trouble.

topwon

It is estimated that this will have to wait until the UWB positioning solution with millimeter level can be achieved in the future (currently it is mainly positioned at the level of about 10cm).

yichun417

The Hawkeye system is the most convenient, including installation, debugging, etc.