CN108806717B - Sports game whistle recognition device and method - Google Patents
Sports game whistle recognition device and method Download PDFInfo
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- CN108806717B CN108806717B CN201810385225.1A CN201810385225A CN108806717B CN 108806717 B CN108806717 B CN 108806717B CN 201810385225 A CN201810385225 A CN 201810385225A CN 108806717 B CN108806717 B CN 108806717B
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/78—Detection of presence or absence of voice signals
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/06—Indicating or scoring devices for games or players, or for other sports activities
- A63B71/0619—Displays, user interfaces and indicating devices, specially adapted for sport equipment, e.g. display mounted on treadmills
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/48—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 specially adapted for particular use
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Abstract
The invention provides a sentinel recognition device and method for sports competition, wherein the device comprises a sound pick-up, a wireless sound pick-up terminal and a wireless base station device; the wireless pickup terminal is connected with the pickup, acquires and processes an audio signal of the pickup, and sends a signal of timing pause or timing start when the audio characteristic of the whistle is judged, the signal is sent to the wireless base station device in a wireless mode, and the output end of the wireless base station device is connected with a competition timing system to control the timing of a competition; each of the radio base station apparatuses receives radio signals from 8 radio pickup terminals. The method is a judging method for whistle recognition. The invention solves the problems that the referee cannot control the start of timing in real time, the generated timing time is inaccurate and the delay is generated by manually operating a timing system.
Description
Technical Field
The invention relates to the technical field of auxiliary equipment for sports competitions, in particular to a whistle recognition device and method for the sports competitions.
Background
The time calculation in the basketball game is accurate to the millisecond level, and if the manual operation mode is adopted to participate in timing, the generated error is large, and the fairness of the game is influenced.
Therefore, a product is needed, which can effectively avoid the error generated in the artificial timing, avoid the dispute caused by the artificial timing in the competition process, stop the competition timing at the moment when the referee blows a whistle, and can reduce the rechecking times of the referee on the time, improve the competition rhythm and allow all people on the competition field to pay attention to the competition by starting the competition timing through the wireless waist pack (wireless terminal) of the system. Such products are not available in the prior art.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides a sentinel recognition device and a method for a sports game, which solve the problems that a referee cannot control the start of timing in real time, the generated timing time is inaccurate and the delay is generated by manually operating a timing system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a kind of sports match whistle recognition device, including the pickup, wireless pickup terminal and wireless base station apparatus; the wireless pickup terminal is connected with the pickup, acquires and processes an audio signal of the pickup, and sends a signal of timing pause or timing start when the audio characteristic of the whistle is judged, the signal is sent to the wireless base station device in a wireless mode, and the output end of the wireless base station device is connected with a competition timing system to control the timing of a competition;
each of the radio base station apparatuses receives radio signals from 8 radio pickup terminals.
The wireless pickup terminal is a single chip microcomputer control device and comprises a master control MCU, an audio amplifier, a 433 wireless module, an operation key, an indicator lamp and a charging circuit, wherein the audio amplifier, the 433 wireless module, the operation key, the indicator lamp and the charging circuit are connected with the port of the master control MCU, the input end of the audio amplifier is connected with a pickup, the output end of the audio amplifier is connected with the master control MCU, the input end of the charging circuit is connected with an external power.
The wireless base station device is a singlechip control device and comprises a main control MCU (microprogrammed control unit) and a TFT (thin film transistor) display screen, a 433 wireless module, an Ethernet interface chip, an RS232 interface chip, a switching value output interface, an operation key, an indicator lamp and a charging circuit, wherein the TFT display screen, the 433 wireless module, the Ethernet interface chip, the RS232 interface chip, the switching value output interface, the operation key, the indicator lamp and the charging circuit are connected with the port of the MCU, the Ethernet interface chip is connected with an RJ45 interface, the RS232 interface chip.
A whistle recognition method of a whistle recognition device for sports games comprises the following steps:
step one, a main control MCU processor of the wireless pickup terminal converts analog quantity data of sound into digital signals through A/D;
sampling the signal, wherein the sampling frequency is more than 20000Hz, taking 4096 bytes out for FFT processing, converting the bytes into frequency domain data, and the processing time is less than 30 ms;
step three, calculating data in the frequency domain, namely data between a frequency limited threshold low point and a frequency limited threshold high point, calculating an energy maximum value and an energy average value of points in the frequency domain, setting an energy minimum threshold and an energy average threshold, and outputting the existence of the current whistle when the energy maximum value is greater than the minimum threshold and the energy average value is greater than the average threshold;
and step four, when the whistle exists, the wireless pickup terminal sends a whistle pause instruction to the wireless base station device and sends the whistle pause instruction to the match timing system through a serial port, an Ethernet port or a switching value output port.
Compared with the prior art, the invention has the beneficial effects that:
1. the voice of the referee blowing whistle is identified from the noisy environment of the competition site, and the voice of the referee blowing whistle is identified through frequency-energy and an identification result is given. The recognition rate is 99%, and the accuracy and the real-time performance are high.
2. Meanwhile, the whistle special for referees of brands such as fox40, molten, flying fish and the like is supported.
3. And 8-path terminals are supported to work simultaneously, and when the terminals work simultaneously, the processing time from the completion of result processing to the transmission of the signal to the base station is less than 100ms, so that the feeling of delay is not given to people. A typical device will have a significant time delay after supporting multiple terminals.
4. The base station provides a number of protocols to communicate the identification to the third party device (the race timing system). Switching value signals, network terminal communication and serial port communication.
5. The base station TFT screen displays the operation state information and the battery power information of the 8-channel terminal;
6. the terminal and the base station adopt 433MHz wireless communication, and have less interference compared with 2.4G, WiFi, Bluetooth, radio frequency and the like.
Drawings
FIG. 1 is an overall block diagram of a whistle recognition device for a sports game according to the present invention;
fig. 2 is a block diagram of a circuit configuration of a wireless sound pickup terminal according to the present invention;
fig. 3 is a block diagram of a circuit configuration of a radio base station apparatus according to the present invention;
fig. 4 is a flowchart of internal software of the wireless pickup terminal;
fig. 5 is an internal software flowchart of the radio base station apparatus;
FIG. 6 is a plot of sentinel audio frequency versus energy for type 1 referee according to an embodiment of the present invention;
FIG. 7 is a plot of sentinel audio frequency versus energy for type 2 in accordance with an embodiment of the present invention;
FIG. 8 is a plot of sentinel audio frequency versus energy for type 3 in accordance with an embodiment of the present invention;
FIG. 9 is a plot of sentinel audio frequency versus energy for type 4 in accordance with an embodiment of the present invention;
FIG. 10 is a plot of the whistle audio frequency versus energy of the referee type 5 embodiment of the present invention.
Detailed Description
The following detailed description of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1, a whistle recognition device for sports events comprises a sound pick-up, a wireless sound pick-up terminal and a wireless base station device; the wireless pickup terminal is connected with the pickup, acquires and processes an audio signal of the pickup, and sends a signal of timing pause or timing start when the audio characteristic of the whistle is judged, the signal is sent to the wireless base station device in a wireless mode, and the output end of the wireless base station device is connected with a competition timing system to control the timing of a competition;
as shown in fig. 1, each of the radio base station apparatuses receives radio signals of 8 radio pickup terminals. And 8-path terminals are supported to work simultaneously, and UFH frequency band transmission is adopted in wireless transmission, so that the interference of the traditional 2.4G and 5G signals is avoided. The method adopts an anti-collision algorithm to process the condition that multiple paths of terminals work simultaneously. When the 8 channels work simultaneously, the processing time from the completion of the result processing to the transmission of the signal to the base station is less than 100ms, and the data processing time is controlled within 50ms during the work simultaneously, thereby not giving people a feeling of delay. There is a significant time delay after the device supports a large number of terminals.
As shown in fig. 2, the wireless sound pickup terminal is a single chip microcomputer control device, and comprises a main control MCU, an audio amplifier connected with a port of the main control MCU, a 433 wireless module, an operation key, an indicator lamp and a charging circuit, wherein the input end of the audio amplifier is connected with a sound pickup, the output end of the audio amplifier is connected with the main control MCU, the input end of the charging circuit is connected with an external power port, and the output end of the charging circuit is connected with a lithium battery.
The main control MCU in FIG. 2 adopts an STM32F415RGT6 type processor based on an ARM core, and has high processing speed and low power consumption.
The operating keys are start/pause keys, and the referee can also control the start/pause timing function of the game by operating the operating keys.
The indicator light is a state indicator light of a battery.
As shown in fig. 3, the wireless base station device is a single chip microcomputer control device, and includes a main control MCU, a TFT display screen connected to a port of the main control MCU, a 433 wireless module, an ethernet interface chip, an RS232 interface chip, a switching value output interface, an operation key, an indicator light, and a charging circuit, where the ethernet interface chip is connected to an RJ45 interface, the RS232 interface chip is connected to an RS232 communication interface, an input end of the charging circuit is connected to an external power port, and an output end of the charging circuit is connected to a lithium battery.
The main control MCU in FIG. 3 adopts an STM32F107VC type processor based on ARM core, and has high processing speed and low power consumption.
The indicator light is a status indicator light for receiving 8 paths of wireless data.
The wireless base station apparatus supports an ethernet port, a serial port, a switching value protocol, and a third party (a race timing system) to transmit data.
As shown in fig. 4 to 5, a whistle recognition method of a whistle recognition device for sports games includes the steps of:
step one, a main control MCU processor of the wireless pickup terminal converts analog quantity data of sound into digital signals through A/D;
sampling the signal, wherein the sampling frequency is more than 20000Hz, taking 4096 bytes out for FFT processing, converting the bytes into frequency domain data, and the processing time is less than 30 ms;
the sound sampling rate is 20000Hz, which is enough to cover the frequency band of whistle.
Step three, calculating data in the frequency domain, namely data between a frequency limited threshold low point and a frequency limited threshold high point, calculating an energy maximum value and an energy average value of points in the frequency domain, setting an energy minimum threshold and an energy average threshold, and outputting the existence of the current whistle when the energy maximum value is greater than the minimum threshold and the energy average value is greater than the average threshold;
in the specific implementation process, the lowest threshold and the average threshold are set, and whistle data of common referees are collected and stored in a database and set according to the audio data and the audio curve.
The specific embodiment is as follows: as shown in fig. 6-10, the audio frequency graphs of 5 kinds of common referee whistles are respectively: five kinds of fox40, moltenoff, flying fish, moltenPro and fox Classic. The abscissa of the curve is the frequency value in Hz and the ordinate is the energy value in dB, see fig. 6, the data between the low point of the frequency-limited threshold and the high point of the frequency-limited threshold of the present embodiment is shown between the two vertical lines, the set values of the lowest threshold and the average threshold of the energy are shown in the two horizontal lines, in the present embodiment, the energy lowest threshold is set to 58500dB and the average threshold is set to 27500 dB. The setting value of the embodiment covers the most common whistle tones of 5 referees in figures 6-10, and the whistle tones in the 5 referees can be accurately identified.
And step four, when the whistle exists, the wireless pickup terminal sends a whistle pause instruction to the wireless base station device and sends the whistle pause instruction to the match timing system through a serial port, an Ethernet port or a switching value output port.
The sentinel recognition device and method for sports competitions can accurately count time to millisecond level, reduce the workload of staff participating in the timing system and enhance the fairness and observability of competitions.
The above embodiments are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the above embodiments. The methods used in the above examples are conventional methods unless otherwise specified.
Claims (1)
1. A whistle sound recognition method of a whistle sound recognition device of a sports game, the whistle sound recognition device comprises a sound pick-up, a wireless sound pick-up terminal and a wireless base station device; the wireless pickup terminal is connected with the pickup, acquires and processes an audio signal of the pickup, and sends a signal of timing pause or timing start when the audio characteristic of the whistle is judged, the signal is sent to the wireless base station device in a wireless mode, and the output end of the wireless base station device is connected with a competition timing system to control the timing of a competition;
each of the radio base station apparatuses receives radio signals from 8 radio pickup terminals;
the method is characterized by comprising the following steps:
step one, a main control MCU processor of the wireless pickup terminal converts analog quantity data of sound into digital signals through A/D;
sampling the signal, wherein the sampling frequency is more than 20000Hz, taking 4096 bytes out for FFT processing, converting the bytes into frequency domain data, and the processing time is less than 30 ms;
step three, calculating data in the frequency domain, namely data between a frequency limited threshold low point and a frequency limited threshold high point, calculating an energy maximum value and an energy average value of points in the frequency domain, setting an energy minimum threshold and an energy average threshold, and outputting the existence of the current whistle when the energy maximum value is greater than the minimum threshold and the energy average value is greater than the average threshold; the energy minimum threshold is set to 58500dB, and the average threshold is set to 27500 dB;
collecting and storing whistle sound data of a common referee whistle into a database, and setting according to the audio data and an audio curve; the audio curves of 5 kinds of common referee whistles are respectively: five kinds of fox40, moltenoff, flying fish, moltenPro and fox Classic;
step four, when the whistle exists, the wireless pickup terminal sends a whistle pause instruction to the wireless base station device and sends the whistle pause instruction to the match timing system through a serial port, an Ethernet port or a switching value output port;
the wireless pickup terminal is a singlechip control device and comprises a master control MCU, an audio amplifier connected with the port of the master control MCU, a 433 wireless module, an operation key, an indicator light and a charging circuit, wherein the input end of the audio amplifier is connected with the pickup, the output end of the audio amplifier is connected with the master control MCU, the input end of the charging circuit is connected with an external power supply port, and the output end of the charging circuit is connected with a lithium battery;
the wireless base station device is a singlechip control device and comprises a main control MCU (microprogrammed control unit) and a TFT (thin film transistor) display screen, a 433 wireless module, an Ethernet interface chip, an RS232 interface chip, a switching value output interface, an operation key, an indicator lamp and a charging circuit, wherein the TFT display screen, the 433 wireless module, the Ethernet interface chip, the RS232 interface chip, the switching value output interface, the operation key, the indicator lamp and the charging circuit are connected with the port of the MCU, the Ethernet interface chip is connected with an RJ45 interface, the RS232 interface chip.
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| CN201810385225.1A CN108806717B (en) | 2018-04-26 | 2018-04-26 | Sports game whistle recognition device and method |
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| CN201810385225.1A CN108806717B (en) | 2018-04-26 | 2018-04-26 | Sports game whistle recognition device and method |
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| CN111228777B (en) * | 2020-02-27 | 2021-04-16 | 东北石油大学 | Intelligent basketball referee processing method and device |
| CN111145784A (en) * | 2020-03-11 | 2020-05-12 | 每步科技(上海)有限公司 | Sound detection starting system |
| CN112331233B (en) * | 2020-10-27 | 2024-07-23 | 郑州捷安高科股份有限公司 | Auditory signal identification method, device, equipment and storage medium |
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| CN102971771A (en) * | 2010-06-30 | 2013-03-13 | 阿多尼斯Rf公司 | Installation for controlling the playing time of a sporting event |
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| CN207237218U (en) * | 2017-06-28 | 2018-04-17 | 王宏宇 | A kind of new sports teaching Sports timer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5238935B2 (en) * | 2008-07-16 | 2013-07-17 | 国立大学法人福井大学 | Whistling sound / absorption judgment device and whistle music verification device |
| US9396628B1 (en) * | 2014-06-25 | 2016-07-19 | Tlwam Llc | Electronic whistle sensor |
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| CN101822897A (en) * | 2010-03-04 | 2010-09-08 | 马莉芳 | Judgment induction system |
| CN102971771A (en) * | 2010-06-30 | 2013-03-13 | 阿多尼斯Rf公司 | Installation for controlling the playing time of a sporting event |
| CN107430791A (en) * | 2015-09-04 | 2017-12-01 | 迈克尔·J·科斯塔比莱 | System for remotely starting and stopping a timing clock in an environment with multiple different activation signals |
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