CN205561860U - Golf ball ranging system - Google Patents

Abstract

The utility model relates to a distance measuring system for a golf ball, comprising a central processing module, a communication module, a positioning module, an attitude algorithm chip and a sensing module; the communication module, the positioning module and the attitude algorithm chip are all connected to the central processing module; The communication module is connected with an external mobile terminal; the sensing module includes an accelerometer for detecting motion acceleration, a gyroscope for detecting rotational angular velocity, and a magnetometer for detecting absolute azimuth angle, the accelerometer, gyroscope Both the magnetometer and the attitude algorithm chip are connected. The utility model has the advantage of accurately calculating the walking distance through the fusion of positioning data, with an accuracy of up to 20 centimeters; and using MEMS accelerometers, MEMS gyroscopes, and MEMS magnetometers to detect players or measure walking steps and directions. The volume and weight of the equipment are very small, and the cost is also very low.

Description

A distance measuring system for golf balls

technical field

The utility model relates to distance measuring technology, in particular to a golf distance measuring system.

Background technique

In many places in people's life, it is necessary to measure distance, especially in various sports. If it is necessary to measure the hitting distance of each shot in golf, the traditional method is to use the walking method, that is, let a professionally trained caddy walk from the hitting position to the ball landing position. Counts the number of steps taken and then multiplies the number of steps taken by an estimated stride length to calculate distance. This method has poor accuracy and instability, and it costs a lot to train an experienced caddy, so electronic range finders are used in golf.

Commonly used range finders include laser range finders, ultrasonic testers, and GPS range finders. Among them, the laser tester has high precision and is most widely used. For example, a golf tester with the authorized announcement number CN 202403697U, a technology based on GPS and laser ranging, including a power supply module for providing working power, a laser module, a transceiver logic control module, and a sensor for sensing images of distant objects. COMOS image sensor, GPS receiving module for receiving satellite information and generating latitude and longitude signals, main control module, key module and liquid crystal display with operation interface; it connects laser module, GPS receiving module and COMOS image sensor to main control module, so The laser measurement and GPS measurement can be integrated. The distance measurement method is: through the transceiver logic control module, the laser emitting unit in the laser module emits a modulated laser signal to the destination, and then the signal reflected by the destination returns to the destination. To the laser receiving unit to accurately obtain the time difference between laser transmission and reception, the measurement signal is sent to the main control module through the transceiver logic control module to calculate the distance passed by the signal, so the distance between the athlete's own position and the hole can be obtained. At the same time, the GPS receiving module receives its own coordinate information and transmits the information to the main control module. By analyzing the pre-installed map and coordinate information, the distance between the athlete and the hole can be obtained. The COMOS image sensor can accurately perceive the image of distant objects , Combining high-precision laser measurement and long-distance GPS ranging.

It can be seen from the patent description of CN 202403697U that its disadvantages are obvious:

The laser distance measuring unit is used to obtain the distance between the player's own position and the hole. The laser ranging unit is complex in technology, large in size and high in cost;

Using GPS to get the distance between the athlete and the hole, the accuracy of ordinary GPS is poor, and the measurement distance is not accurate;

In this patent, the laser ranging unit and the GPS ranging unit are simply integrated, and there is no real fusion of the two ranging methods, so it does not have the advantages of combining the two methods;

The entire device includes a power supply module, a laser module, a transceiver logic control module, a COMOS image module, and a GPS module. Its volume and weight are bound to be very large and costly, and carrying large, heavy equipment is bound to become a burden during golf sports. Affect user experience and sports fun.

In recent years, the application of MEMS sensors has advanced by leaps and bounds, and they are widely used in consumer electronics, automotive electronics, and industrial electronics. MEMS sensors are found in our commonly used electronic devices such as mobile phones, tablet computers, and electronic bracelets. MEMS sensors generally include three types of accelerometers, gyroscopes, and magnetometers, which can accurately detect the motion posture and orientation of objects. For example, an electronic bracelet using a MEMS accelerometer can accurately detect the number of steps the wearer walks or runs.

GPS technology is a mature navigation and positioning technology, and the positioning accuracy of GPS has a difference between high precision and low precision. The accuracy of high-precision GPS equipment can reach the millimeter level, but the method of use is complicated and the price is very high. It is usually used in military, professional surveying and mapping and other fields. Ordinary civilian GPS equipment is small in size and low in price, but its accuracy is only about 10 meters. It cannot be directly used in occasions with high precision requirements.

Utility model content

In view of the above problems, in order to overcome the defects of the prior art, the utility model aims to provide a high-precision golf distance measuring system.

In order to achieve the above object, the utility model adopts the following technical solutions: a golf distance measuring system, including a central processing module, a communication module, a positioning module, an attitude algorithm chip and a sensing module; the communication module, the positioning module and the attitude algorithm The chips are all connected to the central processing module; the communication module is connected to the external mobile terminal; the sensor module includes an accelerometer for detecting motion acceleration, a gyroscope for detecting rotational angular velocity and a magnetic force for detecting absolute azimuth Meter, described accelerometer, gyroscope and magnetometer are all connected with attitude algorithm chip;

The attitude algorithm chip is used to process the original signal from the sensing module to obtain the attitude signal, and send the attitude signal and the original signal to the central processing module; the original signal includes motion acceleration, rotational angular velocity and absolute azimuth;

The central processing module processes the attitude signal and the original signal to obtain a motion signal, and then processes the positioning signal sent by the positioning module combined with the motion signal to obtain a distance signal, and sends the distance signal to an external mobile terminal through the communication module.

Preferably, the positioning module is a Bluetooth module.

Preferably, the Bluetooth module is a BLE4.0 Bluetooth module.

Preferably, the central processing module is an MCU chip.

Preferably, the positioning module is a GPS chip.

Preferably, the attitude algorithm chip is connected to the central processing module through an IIC bus.

Preferably, the accelerometer is a MEMS accelerometer, the magnetometer is a MEMS magnetometer, and the gyroscope is a MEMS gyroscope.

Preferably, the accelerometer is a three-axis accelerometer, the magnetometer is a three-axis magnetometer, and the gyroscope is a three-axis gyroscope.

Preferably, the motion signal includes motion frequency and step count.

Compared with the prior art, the utility model has the beneficial effects of: accurately calculating the walking distance through fusion positioning data, and the accuracy can reach 20 centimeters; and using MEMS accelerometer, MEMS gyroscope, MEMS magnetometer to detect the player or measure the walking distance Number and direction, the volume and weight of the measuring equipment of this system are very small, and the cost is also very low.

Description of drawings

Fig. 1 is a block diagram of the golf distance measuring system of the present invention.

detailed description

Below, in conjunction with accompanying drawing and specific embodiment, the utility model is described further:

This embodiment provides a golf distance measuring system, the purpose of which is to:

Using MEMS sensors to automatically detect the player or measurer walking and accurately count the number of steps, replacing the manual counting method of caddy;

Use MEMS sensors to detect the walking direction and angle of the player or measurer, and accurately calculate the length of each walking track or the straight-line distance between any two points;

Integrate GPS data to accurately calculate the walking distance of the player or measurer, and accurately calculate the distance to make up for the lack of GPS positioning accuracy, and return the player's location;

Use the BLE4.0 Bluetooth module to send data to mobile terminals to view the results, such as mobile phones or tablet computers, and abandon the display with large size and power consumption so that the volume can be made very small;

Abandon the technical solutions that are complex, bulky and costly, and realize the wearable solutions with small size and low cost, so that players can really enjoy the fun brought by high technology.

As shown in Figure 1, this embodiment includes a central processing module, a communication module, a positioning module, an attitude algorithm chip, and a sensing module; the communication module, the positioning module, and the attitude algorithm chip are all connected to the central processing module, and the sensing module The module is connected to an attitude algorithm chip; the sensing module includes a gyroscope, a magnetometer and an accelerometer; and the gyroscope, magnetometer and accelerometer are all connected to the central processing module through an attitude algorithm chip.

The communication module can be but not limited to a bluetooth module, and the bluetooth module is a BLE4.0 bluetooth module; the communication module is connected to an external mobile terminal; the mobile terminal can be but not limited to a smart phone or a tablet computer.

The central processing module may be, but not limited to, an MCU chip.

The attitude algorithm chip is connected with the central processing module through the IIC bus; the system is installed on the pedestrian, and the accelerometer detects the motion acceleration of the pedestrian through the change of the Hooke force, and the gyroscope detects the pedestrian through the change of the Hooke force. The rotational angular velocity of the magnetometer detects the absolute azimuth angle of the pedestrian’s movement by detecting changes in the earth’s magnetic field; the gyroscope, the magnetometer and the accelerometer send the detected original signals to the attitude algorithm chip respectively; the original signals include Rotational angular velocity, absolute azimuth and motion acceleration;

The attitude algorithm chip processes the received raw signals of the gyroscope, magnetometer and accelerometer to obtain the attitude signal, and sends the attitude signal to the central processing module through the IIC bus, and the attitude algorithm chip receives the received gyroscope, magnetometer and The original signal of the accelerometer is sent to the central processing module through the IIC bus; the attitude signal includes heading angle, roll angle and pitch angle.

The central processing module is used to initially calibrate the accelerometer, gyroscope and magnetometer; the accelerometer is a MEMS accelerometer, the magnetometer is a MEMS magnetometer, and the gyroscope is a MEMS gyroscope.

The MEMS (Micro Electro Mechanical System, Micro Electro Mechanical System) is an industrial technology that integrates microelectronics technology and mechanical engineering. The processing technology of MEMS is transformed from semiconductor processing technology, and its operating range is in the micron range. , so the manufactured MEMS chips have very small volume and power consumption.

Described accelerometer is X, Y, Z three-axis accelerometer, and described gyroscope is X, Y, Z three-axis gyroscope, and described magnetometer is X, Y, Z three-axis magnetometer; Described accelerometer, Gyroscopes and magnetometers can be integrated in one chip to form a 9-axis sensor chip, which can make the volume smaller.

The positioning module can be but not limited to a GPS chip, the positioning module is connected to the central processing module through a serial port; the GPS chip locates the pedestrian, receives the positioning signal sent by the external GPS satellite signal, and sends the positioning signal to the central processing module module.

The central processing module obtains a motion signal according to the received original signal and attitude signal processing, and the motion signal includes the motion frequency and the number of steps of the pedestrian;

During the walking process of the pedestrian, the acceleration of gravity value and frequency received by each axis of the accelerometer due to the walking of the pedestrian keeps shaking within a certain range, and the central processing module shakes according to the vibration frequency of the acceleration of gravity value, The walking frequency and steps of the walker can be calculated; the magnetometer is affected by the earth's magnetic field, and the basic magnetic heading angle can be obtained, and the magnetic heading angle is used to determine the basic movement direction of the walker; during the whole walking process , the output parameters of the accelerometer and the output parameters of the magnetometer are projected to the carrier, and their values are inconsistent with the measured values of the accelerometer and the magnetometer, so the output of the gyroscope needs to be used to update the horizontal angle and the heading angle; the accelerometer, the magnetometer And gyroscope are all prior art.

The central processing module obtains the distance signal of the pedestrian's movement according to the motion signal and the positioning signal, and sends the distance signal to the communication module, so that the communication module sends the distance signal to the external mobile terminal; the pedestrian can view the distance and his own distance through the mobile terminal where you are.

In the course of golf, when the precise coordinate position of each hole is known, the distance between the walker and each hole can be calculated through the ranging system, and the map can be displayed on the mobile terminal at the same time. Determine the position of the walker on the court and the surrounding environment of the court, so as to prompt the walker to choose the club, swing strength and stance angle according to his own experience.

For those skilled in the art, various other corresponding changes and deformations can be made according to the technical solutions and concepts described above, and all these changes and deformations should fall within the protection scope of the claims of the present utility model.

Claims (9)

1. A golf distance measuring system, characterized in that, comprises a central processing module, a communication module, a positioning module, an attitude algorithm chip and a sensor module; the communication module, the positioning module and the attitude algorithm chip are all connected with the central processing module The communication module is connected with an external mobile terminal; the sensing module includes an accelerometer for detecting motion acceleration, a gyroscope for detecting rotational angular velocity and a magnetometer for detecting absolute azimuth, the accelerometer, Both the gyroscope and the magnetometer are connected to the attitude algorithm chip; The attitude algorithm chip is used to process the original signal from the sensing module to obtain the attitude signal, and send the attitude signal and the original signal to the central processing module; the original signal includes motion acceleration, rotational angular velocity and absolute azimuth; The central processing module processes the attitude signal and the original signal to obtain a motion signal, and then processes the positioning signal sent by the positioning module combined with the motion signal to obtain a distance signal, and sends the distance signal to an external mobile terminal through the communication module. 2. The golf distance measuring system according to claim 1, wherein the positioning module is a Bluetooth module. 3. The golf distance measuring system according to claim 2, wherein the bluetooth module is a BLE4.0 bluetooth module. 4. The golf distance measuring system according to claim 1, wherein the central processing module is an MCU chip. 5. The golf distance measuring system according to claim 1, wherein the positioning module is a GPS chip. 6. The golf ball ranging system according to claim 1, wherein the attitude algorithm chip is connected with the central processing module through the IIC bus. 7. The golf distance measuring system according to claim 1, wherein the accelerometer is a MEMS accelerometer, the magnetometer is a MEMS magnetometer, and the gyroscope is a MEMS gyroscope. 8. The golf distance measuring system according to claim 1, wherein the accelerometer is a three-axis accelerometer, the magnetometer is a three-axis magnetometer, and the gyroscope is a three-axis gyroscope. 9. The golf distance measuring system according to claim 1, wherein the motion signal includes motion frequency and step count.