Intelligent long jump measurement device and method

Abstract

The present invention discloses an intelligent long jump measurement device and method, and belongs to the field of intelligent distance measurement technology. The intelligent long jump measurement device of the present invention comprises: a range-finding radar, which transmits a modulated first millimeter wave signal, receives a second millimeter wave signal reflected by a long jumper, forms a real-time received signal, performs carrier frequency removal processing on the real-time received signal and then performs energy accumulation, extracts the real-time relative distance between the long jumper and the range-finding radar and the real-time speed information of the long jumper according to the energy accumulated signal, screens out the first relative distance information according to the real-time speed information, calculates and outputs the long jump distance of the long jumper according to the first relative distance information of the long jumper and the distance between the range-finding radar and the take-off line; a display screen, which receives the signal of the long jump distance of the long jumper and displays the long jump distance of the long jumper; a power supply module, which provides power for the range-finding radar and the display screen. The present invention facilitates real-time measurement, has high accuracy, saves time and manpower, and is easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent distance measurement, and in particular to an intelligent long jump measurement device and method. Background Art

[0002] Long jump is often an event in physical exercise or training. At present, long jump is measured manually with a tape measure. Due to factors such as tape measure accuracy, measurement personnel proficiency, and line of sight errors, the measurement distance error is large and the measurement takes a long time. With the advancement of science and technology, electronic technology is now used to measure long jump results, but the results still need to be recorded and summarized by other people, which will waste a lot of manpower, especially when long jump practitioners are training, and it is inconvenient to measure. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an intelligent long jump measurement device and method, which utilizes the principles of millimeter wave radar ranging and speed measurement to accurately measure the long jump distance of a long jumper, effectively reduce the error of manual measurement, improve the accuracy of measurement data and the real-time performance of measurement, and facilitate data viewing and storage, thereby reducing workload.

[0004] In a first aspect, the present invention provides an intelligent long jump measuring device, comprising: a ranging radar, which transmits a modulated first millimeter wave signal, receives a second millimeter wave signal reflected by a long jumper, and forms a real-time receiving signal, the real-time receiving signal contains relevant information of the long jumper, the real-time receiving signal is first subjected to carrier frequency removal processing and then energy accumulation, and the real-time relative distance between the long jumper and the ranging radar and the real-time speed information of the long jumper are extracted according to the energy accumulated signal, and then the first relative distance information is screened out according to the real-time speed information of the long jumper, the first relative distance information is a real-time relative distance information of the long jumper and the ranging radar when the speed of the long jumper at the moment of landing is 0, and finally the long jump distance of the long jumper is calculated and output according to the first relative distance information and the distance information between the ranging radar and the take-off line; a display screen, which receives the signal of the long jump distance of the long jumper and displays the long jump distance of the long jumper; a power supply module, which provides power for the ranging radar and the display screen.

[0005] In a second aspect, the present invention provides an intelligent long jump measurement method: a ranging radar transmits a modulated millimeter wave signal, the millimeter wave signal is reflected by a long jumper and then received by the ranging radar to form a real-time received signal, the real-time received signal contains relevant information of the long jumper, the ranging radar first performs carrier frequency removal processing on the real-time received signal and then performs energy accumulation, and extracts the real-time relative distance between the long jumper and the ranging radar and the real-time speed information of the long jumper according to the energy accumulated signal, and then screens out first relative distance information according to the real-time speed information of the long jumper, the first relative distance information is a real-time relative distance information of the long jumper and the ranging radar when the speed of the long jumper at the moment of landing is 0, and finally calculates and outputs the long jump distance of the long jumper according to the first relative distance information and the distance between the ranging radar and the take-off line; the display screen receives the signal of the long jump distance of the long jumper and displays the long jump distance of the long jumper; the power supply module provides power to the ranging radar and the display screen.

[0006] The beneficial effects of the present invention are as follows: the range-finding radar can detect the real-time relative distance and real-time speed information between the long jumper and the range-finding radar, and then the range-finding radar can screen out the relative distance between the long jumper and the range-finding radar when the speed of the long jumper at the moment of landing is 0 according to the real-time speed information of the long jumper, and finally calculate and output the long jump distance of the long jumper according to the relative distance information and the distance between the range-finding radar and the take-off line. The technical scheme of the present invention realizes real-time measurement, and the real-time measurement accuracy can reach one hundredth of a second, and the measurement accuracy can be as high as millimeter level, saving time and manpower. At the same time, the device of the present invention has only one range-finding radar, and its volume can be as small as 8 cm in length, 8 cm in width, and about 1 cm in thickness, and the power consumption can be as low as less than 2W, and the weight can be as light as about 200g, which has the advantage of easy installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of the intelligent long jump measurement device of the present invention;

[0008] Figure 2 The figure is a signal flow chart of the ranging radar in the intelligent long jump measurement device of the present invention. DETAILED DESCRIPTION

[0009] In order to make the above features and advantages of the present invention more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. This detailed description is only to help understand the present invention, and the protection scope of the present invention is not limited to the specific description in the specific embodiments.

[0010] Combination Figure 1 The structure of an intelligent long jump measurement device provided by an embodiment of the present invention is described.

[0011] In one embodiment of the present invention, the intelligent long jump measuring device of the present invention comprises:

[0012] The ranging radar transmits a modulated first millimeter wave signal, receives a second millimeter wave signal reflected by a long jumper, and forms a real-time receiving signal, the real-time receiving signal contains relevant information of the long jumper, the ranging radar first performs carrier frequency removal processing on the real-time receiving signal and then performs energy accumulation, extracts the real-time relative distance between the long jumper and the ranging radar and the real-time speed information of the long jumper according to the energy accumulated signal, and then selects the first relative distance information according to the real-time speed information of the long jumper, the first relative distance information is a real-time relative distance information between the long jumper and the ranging radar when the speed of the long jumper is 0 at the moment of landing, and finally calculates and outputs the long jump distance of the long jumper according to the first relative distance information and the distance information between the ranging radar and the take-off line.

[0013] Preferably, in a specific embodiment of the present invention, according to Figure 2 The signal flow chart of the ranging radar briefly explains the process of the ranging radar measuring the long jump distance of the long jumper.

[0014] During the long jump, the ranging radar can monitor the entire process of the long jumper's starting, running, jumping and landing in real time.

[0015] The ranging radar sends a modulated millimeter wave signal. Preferably, the modulated millimeter wave signal can be a linear frequency modulation pulse train signal.

[0016] After being reflected by the long jumper, the millimeter wave signal is received by the ranging radar and forms a real-time received signal, which contains relevant information about the long jumper. The real-time received signal and the local oscillator reference signal are mixed to remove the carrier frequency of the real-time received signal. Then, the pulse compression technology is used to accumulate the energy of a single pulse, and the coherent accumulation technology is used to accumulate the energy of multiple pulses again.

[0017] Preferably, the coherent integration technique may be Fast Fourier Transform FFT.

[0018] Based on the accumulated signals, the ranging radar extracts the real-time relative distance between the long jumper and the ranging radar and the real-time speed information of the long jumper.

[0019] The ranging radar selects the first relative distance information according to the real-time speed information of the long jumper. The first relative distance information is the real-time relative distance information between the long jumper and the ranging radar when the speed of the long jumper is 0 at the moment of landing.

[0020] Preferably, the screening logic is: after the long jumper takes off, he / she performs free fall in the air, and is only affected by gravity in the vertical direction and air resistance in the horizontal direction, so the speed of the long jumper gradually decreases over time. The ranging radar uses the speed change of the long jumper to determine the long jumper's air state in real time. When the long jumper's speed decreases to 0, the ranging radar determines that the long jumper has landed and records the relative distance R between the long jumper and the ranging radar at this time.

[0021] The long jump distance of the long jumper is calculated based on the relative distance R and the distance between the ranging radar and the take-off line. The ranging radar must be at a certain distance from the take-off line and the distance needs to be accurately calibrated when the device is installed, such as 30m. The long jump distance of the long jumper is 30-R m.

[0022] In one embodiment of the present invention, a power supply module provides power for the ranging radar and the display screen.

[0023] In one embodiment of the present invention, a display screen receives a signal of a long jumper's long jump distance and displays the long jumper's long jump distance.

[0024] The distance measuring radar can be used to extract the relative distance and speed information between the long jumper and the distance measuring radar in real time. Then, the distance measuring radar can screen out the relative distance between the long jumper and the distance measuring radar when the speed of the long jumper is 0 at the moment of landing according to the real-time speed information of the long jumper. Finally, the long jump distance of the long jumper is calculated and output according to the relative distance information and the distance between the distance measuring radar and the take-off line. The measurement accuracy of this device is high, real-time measurement is realized, and time and manpower are saved. At the same time, the device is small in size, light in weight, and easy to install.

[0025] In one embodiment of the present invention, the intelligent long jump measuring device of the present invention further includes: a wireless transmission module, which receives a signal of the long jump distance of the long jumper and transmits the signal of the long jump distance of the long jumper to the cloud in real time.

[0026] In this embodiment, preferably, the wireless transmission module may be a wireless 4G module.

[0027] The wireless transmission module is used to automatically transmit the long jumper's long jump distance signal to the cloud in real time, providing convenient data access functions. For example, long jumpers can check their long jump results at any time and analyze their long jump data during long jump practice.

[0028] In this embodiment, the ranging radar has a certain installation height, for example, the installation height of the ranging radar may be 1 m.

[0029] In one embodiment of the present invention, the intelligent long jump measurement method of the present invention comprises:

[0030] The ranging radar transmits a modulated millimeter wave signal, and the millimeter wave signal is received by the ranging radar after being reflected by the long jumper to form a real-time received signal, and the real-time received signal contains relevant information of the long jumper. The ranging radar first performs carrier frequency removal processing on the real-time received signal and then performs energy accumulation, and extracts the real-time relative distance between the long jumper and the ranging radar and the real-time speed information of the long jumper according to the energy accumulated signal, and then selects the first relative distance information according to the real-time speed information of the long jumper, and the first relative distance information is a real-time relative distance information between the long jumper and the ranging radar when the speed of the long jumper is 0 at the moment of landing, and finally calculates and outputs the long jump distance of the long jumper according to the first relative distance information and the distance between the ranging radar and the take-off line;

[0031] The display screen receives the signal of the long jumper's long jump distance and displays the long jumper's long jump distance;

[0032] The power supply module provides power for the ranging radar and display screen.

[0033] In one embodiment of the present invention, the intelligent long jump measurement method of the present invention further includes: a wireless transmission module receives a signal of the long jump distance of the long jumper, and transmits the signal of the long jump distance of the long jumper to the cloud in real time.

[0034] In this embodiment, preferably, the wireless transmission module may be a wireless 4G module.

[0035] The wireless transmission module is used to automatically transmit the long jumper's long jump distance signal to the cloud in real time, providing convenient data access functions. For example, long jumpers can check their long jump results at any time and analyze their long jump data during long jump practice.

[0036] In this embodiment, the ranging radar has a certain installation height, for example, the installation height of the ranging radar may be 1 m.

[0037] In summary, the present invention provides an intelligent long jump measuring device and method. The range-finding radar can detect the relative distance and speed information between the long jumper and the range-finding radar in real time. Then, the range-finding radar selects the relative distance between the long jumper and the range-finding radar when the speed of the long jumper at the moment of landing is 0 according to the real-time speed information of the long jumper. Finally, the long jump distance of the long jumper is obtained by calculating and outputting the relative distance information and the distance between the range-finding radar and the take-off line. The technical solution of the present invention realizes real-time measurement, and the real-time measurement accuracy can reach one hundredth of a second, and the measurement accuracy can be as high as millimeter level, saving time and manpower. At the same time, the device of the present invention has only one range-finding radar, and its volume can be as small as 8 cm in length, 8 cm in width, and about 1 cm in thickness, and the power consumption can be as low as less than 2W, and the weight can be as light as about 200g, which has the advantage of easy installation.

[0038] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An intelligent long jump measuring device, characterized in that include: A ranging radar that: Transmits the first modulated millimeter wave signal, receiving a second millimeter wave signal reflected by a long jumper and forming a real-time received signal, wherein the real-time received signal contains relevant information of the long jumper, The real-time received signal is first subjected to carrier frequency removal processing and then energy is accumulated using pulse compression technology and coherent accumulation technology. According to the energy accumulation signal, the real-time relative distance between the long jumper and the ranging radar and the real-time speed information of the long jumper are extracted, According to the real-time speed information of the long jumper, first relative distance information is screened out, where the first relative distance information is the real-time relative distance information between the long jumper and the ranging radar when the speed of the long jumper at the moment of landing is 0. Calculate and output the long jump distance of the long jumper according to the first relative distance information and the distance between the ranging radar and the take-off line; A display screen receives a signal of the long jump distance of the long jumper and displays the long jump distance of the long jumper; A power supply module provides power for the ranging radar and the display screen.

2. The intelligent long jump measuring device according to claim 1, characterized in that: The intelligent long jump measuring device also includes: The wireless transmission module receives the signal of the long jumper's long jump distance and transmits the signal of the long jumper's long jump distance to the cloud in real time.

3. The intelligent long jump measuring device according to claim 2, characterized in that: The wireless transmission module includes a wireless 4G module.

4. The intelligent long jump measuring device according to claim 1, characterized in that: The modulated millimeter wave signal includes a linear frequency modulation pulse train signal.

5. An intelligent long jump measurement method, characterized in that include: The ranging radar transmits a modulated millimeter wave signal, and the millimeter wave signal is received by the ranging radar after being reflected by the long jumper and forms a real-time received signal, and the real-time received signal contains relevant information of the long jumper. The real-time received signal is first subjected to carrier frequency removal processing and then energy accumulation. According to the energy accumulation signal, the real-time relative distance between the long jumper and the ranging radar and the real-time speed information of the long jumper are extracted, According to the real-time speed information of the long jumper, first relative distance information is screened out, where the first relative distance information is the real-time relative distance information between the long jumper and the ranging radar when the speed of the long jumper at the moment of landing is 0. Calculate and output the long jump distance of the long jumper according to the first relative distance information and the distance between the ranging radar and the take-off line; The display screen receives the signal of the long jump distance of the long jumper and displays the long jump distance of the long jumper. The power supply module provides power for the ranging radar and the display screen.

6. The intelligent long jump measurement method according to claim 5, characterized in that: The intelligent long jump measurement method also includes: The wireless transmission module receives the signal of the long jumper's long jump distance, and transmits the signal of the long jumper's long jump distance to the cloud in real time.

7. The intelligent long jump measurement method according to claim 6, characterized in that: The wireless transmission module includes a wireless 4G module.

8. The intelligent long jump measurement method according to claim 5, characterized in that: The millimeter wave signal includes a linear frequency modulation pulse train signal.

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