Basketball match timing system, method and equipment based on electronic whistles

Abstract

The invention relates to a sports match timing system, and particularly discloses a basketball match timing system, method and device based on an electronic whistle, the timing system comprises an information acquisition unit and a central processing unit; a timing unit is arranged in the central processing unit, and the information acquisition unit comprises a timing operation end and an electronic whistle; a microprocessor, a wireless transmission module and a contact sensor are arranged in the electronic whistle; during whistle blowing, the microprocessor generates time sequence data and transmits the time sequence data to the central processing unit; and the central processing unit adjusts the operation state of the timing unit according to the control instruction, and corrects timing data in the timing unit based on the time sequence data. According to the basketball match timing system, timing data of the timing unit can be corrected, time delay generated by a referee and timing personnel in links of information transmission, manual operation and the like is compensated, and through cooperative work of the timing operation end and the electronic whistle, the basketball match timing accuracy can be remarkably improved, and misjudgment of the system is avoided.

Description

Technical Field

[0001] This invention relates to the field of sports competition timing systems, and in particular to a basketball game timing system, method, and device based on an electronic whistle. Background Technology

[0002] In basketball games, precise timing is crucial to ensure all teams compete within the same timeframe and to prevent unfair tactical execution or stamina distribution due to time discrepancies. Basketball game timing follows the "net time rule," which suspends timing during timeouts, fouls, out-of-bounds possessions, jump balls, before free throws, and when referees interrupt play. This eliminates invalid time, calculating only the actual play time to ensure strict adherence to the rules. Currently, basketball game timing typically relies on manual adjustment of timing devices by timekeepers. These operations are mostly based on the referee's whistle. However, factors such as sound propagation delays, timekeeper reaction delays, and equipment system delays result in significant time lags in the timing device's response. These delays accumulate throughout the game, leading to a large discrepancy between the actual total game time and the stipulated time, compromising fairness.

[0003] In basketball games, referees control the flow of the game and enforce the rules by blowing the whistle. The rationality of some rulings and the validity of scores depend primarily on the timing of the whistle. Currently, the timing of the whistle can usually only be determined through game footage. However, due to factors such as environmental noise, sound propagation delays, and system delays of the recording equipment, the recorded time information has significant errors, affecting the objective judgment of the rationality of rulings and the validity of scores. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, this invention provides a basketball game timing system, method, and device based on an electronic whistle, in order to solve the technical problem of poor accuracy caused by the reliance on manual timing in existing basketball games.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a basketball game timing system based on an electronic whistle, comprising an information acquisition unit, a central processing unit, a timing unit, and a storage unit, wherein the timing unit timing the basketball game based on the control of the central processing unit and generating timing data;

[0007] The information acquisition unit includes a timing operation terminal and an electronic whistle; the timing operation terminal is used to send control commands to the central processing unit.

[0008] The electronic whistle includes a whistle body, a whistle tube, and a movable stopper. The whistle body houses a microprocessor, a wireless transmission module, and a contact sensor. A cylindrical cavity is formed within the whistle body, and the whistle tube extends into this cavity and can be reset forward. Its front end is located outside the whistle body and has a mouthpiece. The movable stopper is located within the cylindrical cavity and behind the whistle tube, and can automatically reset forward. Its rear end has a detection section. When air is blown through the mouthpiece, the airflow drives the movable stopper to move backward, causing the detection section to contact the contact sensor. When an external force drives the whistle tube to move backward, the whistle tube pushes the movable stopper backward, also causing the detection section to contact the contact sensor. The microprocessor monitors the contact signal from the contact sensor and generates timing data, which is transmitted to the central processing unit via the wireless transmission module.

[0009] The central processing unit adjusts the operating state of the timing unit based on control commands. After receiving the timing data, the central processing unit determines whether there is a control command to respond to the same event. If the timing data and the control command correspond to the same event, the central processing unit corrects the timing data based on the timing data to compensate for the time delay between the sounding of the electronic whistle and the state adjustment response of the timing unit.

[0010] In a preferred embodiment, the whistle body has a placement compartment, the microprocessor, the wireless transmission module and the contact sensor are integrated on a circuit board and fixed inside the placement compartment, the placement compartment has a compartment opening and a cover is fixed on the compartment opening.

[0011] In a preferred embodiment, the contact sensor is a microswitch or a piezoelectric sensor.

[0012] In a preferred embodiment, the first elastic element and the second elastic element are springs, which are installed inside the column cavity.

[0013] In a preferred embodiment, a finger ring is fixedly connected to one side of the whistle body, and an annular airbag is fixed to the inner circle side of the finger ring. The whistle body is provided with an inflation passage for inflating the annular airbag.

[0014] In a preferred embodiment, the microprocessor monitors the contact signal, records the start timestamp of the contact signal, and encapsulates the signal type, timestamp, and sensor ID into time-series data.

[0015] In a preferred embodiment, the microprocessor monitors the contact signal in real time, records the start and end timestamps of the contact signal, and encapsulates information such as signal type, timestamp, and sensor ID into timing data; the central processing unit parses the timing data and, in conjunction with data information from the basketball game rule base, determines whether to adjust the operating state of the timing unit. If the adjustment conditions are met, the corresponding control command is automatically generated.

[0016] In this embodiment, when the state adjustment of the timing unit is not based on the whistle time, the contact sensor emits a contact signal by pressing the whistle tube.

[0017] In this embodiment, the timing operation terminal can cancel the automatic adjustment made by the central processing unit to the timing unit, so that the timing unit can return to the operating state before the automatic adjustment.

[0018] In a preferred embodiment, the basketball game timing system includes a display unit, the display unit includes a support, a vertical support frame is provided above the support, and a mesh is installed on the support frame; a projector is fixed on the support, and the projector is located below one side of the mesh.

[0019] In this embodiment, the projector is an ultra-short-throw projector;

[0020] In this embodiment, the support is formed by hinged upper ends of two brackets via a pivot, and the lower end of the support frame is hinged to the pivot. A locking mechanism is provided between the support and the support frame. The locking mechanism includes a positioning rod and a positioning sleeve. The positioning rod is fixed to the lower end of the support frame, and the positioning sleeve is located between the two brackets and connected to the corresponding brackets on both sides via connecting rods. The two brackets, the two connecting rods, and the positioning sleeve form a planar linkage mechanism. The positioning rod remains vertical. When the lower ends of the two brackets move away from each other, the positioning sleeve will move upward and fit onto the positioning rod. When the two brackets move closer together, the positioning sleeve will move downward and disengage from the positioning rod.

[0021] In this embodiment, the locking mechanism is provided in two sets, which are respectively located at both ends of the bracket.

[0022] Secondly, the present invention provides a basketball game timing method based on an electronic whistle, wherein the basketball game timing system is used to time the basketball game, the timing operation terminal is manually operated by the timekeeper, and the electronic whistle is worn and used by the referee.

[0023] Thirdly, the present invention provides a basketball game timing device based on an electronic whistle, including the basketball game timing system and a computer, wherein the central processing unit, timing unit and storage unit are integrated in the computer.

[0024] Compared with the prior art, the basketball game timing system of the present invention has the following beneficial technical effects:

[0025] 1. When the referee blows the whistle, the central processing unit obtains and records the start time of the whistle. This allows for the correction of the timing data in the timing unit, compensating for time delays caused by information transmission and manual operation between the referee and the timekeeper. Since the data transmitted from the electronic whistle to the central processing unit is time-series data, network delays during transmission do not affect the accuracy of the central processing unit's correction of the timing data. Therefore, this basketball game timing system can significantly improve the accuracy of basketball game timing. The central processing unit can accurately and completely record the time information of each whistle, providing objective evidence for judging the rationality of rulings and the validity of scores, thus improving the fairness of the game.

[0026] 2. During the official game, the timing unit's operating status is adjusted manually by the timing personnel through the timing operation terminal. The timing data transmitted from the electronic whistle to the central processing unit is only used as a reference for timing data correction and will not directly trigger the timing unit's status adjustment. This ensures the accuracy of basketball game timing and avoids system misjudgment.

[0027] 3. The electronic whistle has a clever and reasonable structural design. When the whistle is blown, the airflow triggers the contact sensor to generate a contact signal without any additional operation. This is in line with the referee's usage habits and is convenient to use. At the same time, it achieves synchronization between the whistle sound and the contact signal, laying a good foundation for accurate timing.

[0028] 4. This electronic whistle can transmit timing data to the central processing unit when blowing the whistle or pressing the whistle tube. Both modes are based on the cooperation of the piston and the contact sensor. There is no need to set up a separate cooperation structure or control circuit. The high utilization rate of components makes the electronic whistle small and compact, easy to carry and use, and has a low manufacturing cost. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0030] Figure 1 This is a schematic diagram of the main components of the basketball game timing system in the embodiment.

[0031] Figure 2 This is a schematic diagram of the electronic whistle in the embodiment.

[0032] Figure 3 This is a schematic diagram of the electronic whistle's state when it is blown in the embodiment.

[0033] Figure 4 This is a schematic diagram showing the state of the electronic whistle when the whistle tube is pressed in the embodiment.

[0034] Figure 5 This is a flowchart illustrating the working principle of the basketball game timing system in the embodiment.

[0035] Figure 6 This is a flowchart illustrating the working principle of the basketball game timing system in automatic control mode in the embodiment.

[0036] Figure 7 This is one of the structural schematic diagrams of the display unit in the embodiment.

[0037] Figure 8 This is the second schematic diagram of the display unit in the embodiment.

[0038] Figure 9 This is a schematic diagram of the structure of the display unit when it adopts a folding design in the embodiment.

[0039] Figure 10 This is a schematic diagram showing the assembly state of the bracket, support frame, positioning sleeve, and positioning sleeve.

[0040] Figure label:

[0041] 1-Ring; 2-Annular airbag; 3-Cap; 4-Power module; 5-Wireless transmission module; 6-Whistle body; 7-Microprocessor; 8-Contact sensor; 9-Detected part; 10-Exhaust port; 11-Second elastic element; 12-Positioning stop; 13-Whistle tube; 14-Mouthpiece; 15-First elastic element; 16-Inflation air path; 17-Support; 171-Bracket; 18-Support frame; 19-Gauze screen; 20-Projector; 21-Protective box; 22-Positioning sleeve; 23-Connecting rod; 24-Positioning rod; 25-Rotating shaft. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] See Figures 1 to 5As shown in the embodiment, the basketball game timing system of the present invention includes an information acquisition unit, a central processing unit, a timing unit, a storage unit, and a display unit. The timing unit has a built-in clock module and times the basketball game based on the control of the central processing unit. When situations such as pauses, fouls, or out-of-bounds situations occur during the game, the timing unit pauses the timing, thereby eliminating the invalid time generated during the above situations and only calculating the actual normal time of the game to generate corresponding timing data, so as to ensure that the total actual game duration is consistent with the requirements of the basketball game rules. The storage unit is used to store the data information received and processed by the central processing unit for subsequent retrieval. The display unit is used to display the data information output by the central processing unit. The information acquisition unit includes a timing operation terminal and an electronic whistle. The timing operation terminal is manually operated by the timekeeper. The timekeeper makes subjective judgments based on the game situation or sends control command signals to the central processing unit through the timing operation terminal, including timing start, timing pause, and timing resumption.

[0044] The electronic whistle, controlled by the referee, includes a whistle body 6, a whistle tube 13, and a movable stop 12. The whistle body 6 houses a microprocessor 7, a wireless transmission module 5, a contact sensor 8, and a power module 4 that supplies power to these electrical components. A cylindrical cavity is formed within the whistle body 6. The whistle tube 13 extends into the cavity and can slide back and forth. The front end of the whistle tube 13 is located outside the whistle body 6 and has a mouthpiece 14. When air is blown into the whistle tube 13 through the mouthpiece 14, the whistle tube 13 emits a whistling sound. The whistle body 6 has a first elastic element 15 that drives the whistle tube 13 to return to its original position, and a limiting part that prevents the whistle tube 13 from detaching from the cavity. The movable stop 12 is located within the cavity and can slide back and forth. The movable stop 12 is located behind the whistle tube 13 and in front of the sensing part of the contact sensor 8. The whistle body 6 has a second elastic element 11 that drives the movable stop 12 to return to its original position. The rear end of the movable stop 12 has a detection part 9. The whistle body 6 has an opening that allows the cavity to communicate with the outside. The exhaust port 10 is used to discharge the airflow from the rear end of the whistle tube 13 to the outside. When both the whistle tube 13 and the movable plug 12 are in the reset state, the movable plug 12 contacts the rear end of the whistle tube 13 and blocks the port of the whistle tube 13. At this time, the detected part 9 and the sensing part of the contact sensor 8 are in a non-contact state. When air is blown into the whistle tube 13 through the mouthpiece 14, the movable plug 12 is driven by the airflow to overcome the elastic force of the second elastic element 11 and move backward, so that the detected part 9 contacts the sensing part of the contact sensor 8. When the external force drives the whistle tube 13 to move backward, the whistle tube 13 pushes the movable plug 12 to move backward, which can also make the detected part 9 contact the sensing part of the contact sensor 8. When the contact sensor 8 contacts the detected part 9, a contact signal is generated. The microprocessor 7 monitors the contact signal, records the start timestamp of the contact signal, and encapsulates the signal type, timestamp, sensor ID and other information into timing data, which is then transmitted to the central processing unit via the wireless transmission module 5.

[0045] The central processing unit adjusts the operating state of the timing unit based on control commands fed back from the timing operation terminal, including timing start, timing pause, and timing resumption. After receiving the timing data fed back by the electronic whistle, the central processing unit extracts the timestamp data to obtain the time information when the electronic whistle sounds, and determines whether there is a control command for the same event as the timing data. For example, when the referee blows the whistle to signal the stop of the game, the electronic whistle will feed back a set of timing data to the central processing unit. At the same time, after hearing the whistle, the timekeeper will send a control command to stop the timing to the central processing unit through the timing operation terminal. The timing data and control command generated in this process refer to the same event. Since the time difference between the timing data and control command for the same event transmitted to the central processing unit is extremely small, the central processing unit can perform correlation analysis on the time information of the timing data and control command to determine whether they refer to the same event. If the timing data and control command correspond to the same event, the central processing unit will correct the timing data based on the timing data to compensate for the time delay between the sounding of the electronic whistle and the timing unit's state adjustment response, thereby improving the accuracy of the timing data.

[0046] Therefore, during a basketball game, referees can use the electronic whistle in the same way and according to their usual habits. When the referee blows the whistle, the central processing unit can obtain the start time of the whistle to correct the timing data of the timing unit, compensating for the time delays caused by information transmission and manual operation between the referee and the timing personnel. Since the data transmitted from the electronic whistle to the central processing unit is time-series data, network delays during the transmission of time-series data do not affect the accuracy of the central processing unit's correction of the timing data. Therefore, this basketball game timing system can significantly improve the accuracy of game timing. Because the electronic whistle automatically sends time-series data containing timestamps to the central processing unit when it sounds, the central processing unit can more accurately and completely record the time information of each whistle, providing objective evidence for judging the rationality of the ruling and the validity of the score, thus improving the fairness of the game.

[0047] In official matches, the timing unit's operating status is adjusted manually by the timing personnel through the timing operation terminal. The timing data transmitted by the electronic whistle to the central processing unit is only used as a reference for correcting the timing data and will not directly trigger the timing unit's status adjustment. This ensures the accuracy of basketball game timing and avoids system misjudgment.

[0048] In practice, the basketball game timing system and the computer together constitute a complete set of basketball game timing equipment; the central processing unit, timing unit and storage unit are integrated into the computer, serving as the host device of this basketball game timing system.

[0049] In a preferred embodiment, the whistle tube 13 is sealed to the cylindrical cavity in the whistle body 6. When air is blown into the whistle tube 13 through the mouthpiece 14, the air discharged from the rear end of the whistle tube 13 can only be discharged to the outside through the exhaust hole 10. This allows the airflow during the whistle blowing process to provide maximum driving force to the throttle 12, ensuring that the generation and continuous high synchronization of the whistle sound and the contact signal.

[0050] In a preferred embodiment, the whistle body 6 is provided with a housing compartment. The microprocessor 7, wireless transmission module 5, contact sensor 8 and power module 4 are integrated on a circuit board and fixed inside the housing compartment. The housing compartment is provided with a compartment opening and a cover 3 is fixed on the compartment opening to facilitate the installation and maintenance of the electrical components.

[0051] In a preferred embodiment, the contact sensor 8 is a micro switch or a piezoelectric sensor, to take into account the technical advantages of fast response and low cost.

[0052] In a preferred embodiment, the first elastic element 15 and the second elastic element 11 are springs, installed inside the column cavity.

[0053] In a preferred embodiment, such as Figures 2 to 4 As shown, a finger ring 1 is fixedly connected to one side of the whistle body 6 so that the referee can carry it and effectively prevent accidental operation caused by contact. Furthermore, an annular airbag 2 is fixed to the inner circle side of the finger ring 1. The whistle body 6 is provided with an inflation passage 16 for inflating the annular airbag 2, and a one-way valve is provided on the inflation passage 16. Thus, the annular airbag 2 can play a role in anti-slip and protection, improve wearing comfort. At the same time, since the inner diameter of the annular airbag 2 will change according to the amount of air inside, it can be flexibly adjusted to adapt to personal wearing habits and individual differences between different people.

[0054] In a preferred embodiment, such as Figure 3 , Figure 4 , Figure 6 As shown, the central processing unit has an automatic control mode, in which no manual operation of the timing terminal is required; the specific working principle is as follows:

[0055] During a basketball game, the contact sensor 8 continuously outputs a contact signal as it comes into contact with the detected part 9. The microprocessor 7 monitors the contact signal in real time, records the start and end timestamps of the contact signal, and encapsulates information such as signal type, timestamp, and sensor ID into timing data. This data is then transmitted in real time to the central processing unit via the wireless transmission module 5. The central processing unit parses the timing data to obtain key data such as the initial time of the contact signal, the duration of the contact signal, and the interval between adjacent contact signals. Combined with data such as the basketball game rule base, it determines whether to adjust the operating state of the timing unit. If the adjustment conditions are met, it automatically generates corresponding control commands, such as timing start, timing pause, and timing resumption, to automatically adjust the operating state of the timing unit. At the same time, the central processing unit corrects the timing data of the timing unit based on the timestamp data in the timing data to compensate for the time delay between the sounding of the electronic whistle and the timing unit's state adjustment response, thereby improving the accuracy of the timing data.

[0056] In actual matches, not all whistle-blowing situations require adjustment of the timing unit's operating status. For example, in cases of technical foul whistles, warning whistles, or goal-valid whistles, whistles do not require pausing the timer. Therefore, in automatic control mode, the central processing unit should have the ability to identify and filter, determining whether the timing unit's operating status needs adjustment when a contact signal is generated. Typically, whistles for different situations differ significantly in duration, continuity, and number of sounds, resulting in corresponding differences in contact signals. Based on this characteristic, after training with a large model, the central processing unit can accurately determine whether to adjust the timing unit's operating status based on key data such as the initial time of contact signal generation, contact signal duration, and the interval between adjacent contact signals, thereby reducing misjudgments.

[0057] In actual matches, the timing unit's operation is not always adjusted based on the whistle's timing. For example, after certain violations or fouls, when the ball is legally touched, or in a jump ball situation, when the ball is legally struck, the timing unit should resume. Therefore, in automatic control mode, when the timing unit's operation is not adjusted based on the whistle's timing, the referee can, based on the match situation, press the whistle tube 13 to trigger the contact sensor 8 to emit a contact signal without emitting a whistle, prompting the central processing unit to automatically adjust the timing unit's operation.

[0058] Based on the above working principle in automatic control mode, the central processing unit can analyze and process the timing data output by the electronic whistle, automatically formulate adjustment strategies for the timing unit, and realize automatic adjustment of the timing unit's operating status. This can save personnel and has broad application prospects in informal competitions.

[0059] In addition, to ensure the accuracy of the automatic control mode, the automatic adjustment of the timing unit by the central processing unit can be manually reviewed and corrected. If a misjudgment is found, the automatic adjustment of the timing unit by the central processing unit can be canceled using the timing operation terminal, so that the timing unit can be restored to the operating state before the automatic adjustment.

[0060] In existing technologies, the timing system and the scoring system typically share an LED display screen as the display unit. This type of display unit has certain drawbacks in practical use. Firstly, LED displays are easily damaged electronic devices, prone to malfunction, especially when impacted by a basketball, making on-site repair difficult and disrupting the game. Secondly, in some competition venues, LED displays are placed on open ground on either side of the playing area, which can easily obstruct the view of spectators, affecting the viewing experience. Therefore, based on the above technical problems, this invention provides the following improvements to the display unit:

[0061] like Figure 7 , Figure 8 As shown, the display unit includes a base 17, with a vertically placed support frame 18 above the base 17, and a mesh screen 19 mounted on the support frame 18; a projector 20 that can transmit data with the central processing unit is fixed on the base 17, and the projector 20 is located below one side of the mesh screen 19; thus, the projector 20 can project the timing data output by the central processing unit onto the mesh screen 19 for real-time observation.

[0062] Based on the above design, the image is displayed by the mesh 19. The mesh 19 is not easily damaged and has a long service life. Even if it is damaged by a basketball, it can be replaced quickly and the replacement cost is extremely low. The projector 20 is small in size and has a low probability of being hit by a basketball. At the same time, it can be protected by protective measures such as the protective box 21 to avoid damage from external forces, thereby improving the operational stability and service life of the display unit.

[0063] Meanwhile, since the mesh 19 is translucent, it can effectively reduce the obstruction of the audience's view; since there is a height difference between the projector 20 and the mesh 19, the projected light from the projector 20 has a large tilt angle, and the light passing through the mesh 19 will not shine on the audience, thus avoiding light pollution for the audience.

[0064] In practical implementation, the projector 20 is an ultra-short-throw projector 20, which minimizes the distance between the screen 19 and the projector 20 in the front-to-back direction, thereby reducing the size of the display unit, reducing its space occupation, and improving flexibility. During projection, the image on the screen 19 can be corrected using the keystone correction function to ensure good display effect.

[0065] Furthermore, to facilitate the repositioning of the display unit and its storage when not in use, the display unit also has the following technical features:

[0066] like Figure 9 , Figure 10 As shown, the support 17 is formed by hinged upper ends of two brackets 171 via a pivot 25, and is in the shape of an inverted V. The lower end of the support frame 18 is hinged to the pivot 25 and is supported by the pivot 25. A locking mechanism is provided between the support 17 and the support frame 18. The locking mechanism includes a positioning rod 24 and a positioning sleeve 22. The positioning rod 24 is fixed to the lower end of the support frame 18 and extends downward to the lower side of the pivot 25. The positioning sleeve 22 is located between the two brackets 171. The opposite sides of the positioning sleeve 22 are connected to the corresponding brackets 171 via a connecting rod 23, so that the two brackets 171, the two connecting rods 23 and the positioning sleeve 22 form a planar connecting rod 23 mechanism.

[0067] Therefore, during normal use, the positioning rod 24 is kept vertical, and the lower ends of the two supports 171 are moved apart. The positioning sleeve 22 moves upward and fits over the positioning rod 24. When the two supports 171 are restricted by the connecting rod 23 and cannot move further apart, the two supports 171 form a stable triangular support structure. The support frame 18 is supported by the two supports 171 and is limited by the positioning sleeve 22 and the positioning rod 24, thus maintaining a stable vertical state. When the display unit is moved or idle, the two supports 171 are brought together, the positioning sleeve 22 moves downward and disengages from the positioning rod 24, and after the two positioning rods 24 are brought together, the support frame 18 can be rotated to the underside of the pivot 25, thereby adjusting the display unit to a folded state for easy movement and to reduce the space occupied during idle periods.

[0068] In the specific implementation process, two sets of the locking mechanism can be set, respectively at both ends of the bracket 171, to further improve the overall structural stability.

Claims

1. A basketball game timing system based on an electronic whistle, comprising an information acquisition unit, a central processing unit, a timing unit, and a storage unit, wherein the timing unit times the basketball game and generates timing data; characterized in that: The information acquisition unit includes a timing operation terminal and an electronic whistle; the timing operation terminal is used to send control commands to the central processing unit. The electronic whistle includes a whistle body, a whistle tube, and a movable stopper. The whistle body houses a microprocessor, a wireless transmission module, and a contact sensor. A cylindrical cavity is formed within the whistle body, into which the whistle tube extends and can be reset forward. The front end of the whistle tube is located outside the whistle body and has a mouthpiece. The movable stopper is located within the cylindrical cavity and behind the whistle tube, and can automatically reset forward. Its rear end has a detection section. When air is blown through the mouthpiece, the airflow drives the movable stopper to move backward, causing the detection section to contact the contact sensor. When an external force drives the whistle tube to move backward, the whistle tube pushes the movable stopper backward, also causing the detection section to contact the contact sensor. The microprocessor monitors the contact signal from the contact sensor and generates timing data, which is transmitted to the central processing unit via the wireless transmission module. The central processing unit adjusts the operating state of the timing unit based on control commands. After receiving timing data, it determines whether there is a control command for the same event. If the timing data and the control command correspond to the same event, the central processing unit corrects the timing data based on the timing data to compensate for the time delay between the sounding of the electronic whistle and the timing unit's state adjustment response.

2. The basketball game timing system according to claim 1, characterized in that: A finger ring is fixedly connected to one side of the whistle body, and an annular airbag is fixed to the inner circle side of the finger ring. The whistle body is provided with an inflation passage for inflating the annular airbag.

3. The basketball game timing system according to claim 1, characterized in that: The microprocessor monitors the contact signal, records the start timestamp of the contact signal, and encapsulates the signal type, timestamp, and sensor ID into time-series data.

4. The basketball game timing system according to claim 3, characterized in that: The microprocessor monitors the contact signal in real time, records the start and end timestamps of the contact signal, and encapsulates information such as signal type, timestamp, and sensor ID into timing data. The central processing unit parses the timing data and, in conjunction with data information from the basketball game rule base, determines whether to adjust the operating state of the timing unit. If the adjustment conditions are met, the corresponding control command is automatically generated.

5. The basketball game timing system according to claim 3, characterized in that: When the state adjustment of the timing unit is not based on the whistle time, the contact sensor emits a contact signal by pressing the whistle tube.

6. The basketball game timing system according to claim 3, characterized in that: The timing operation terminal can be used to cancel the automatic adjustment made by the central processing unit to the timing unit, so that the timing unit can be restored to the operating state before the automatic adjustment.

7. The basketball game timing system according to claim 1, characterized in that: The device includes a display unit, which includes a support, a vertical support frame above the support, and a mesh screen installed on the support frame; a projector is fixed on the support and is located below one side of the mesh screen.

8. The basketball game timing system according to claim 7, characterized in that: The support consists of two brackets hinged at their upper ends via a pivot, and the lower end of the support frame is hinged to the pivot. A locking mechanism is provided between the support and the support frame. The locking mechanism includes a positioning rod and a positioning sleeve. The positioning rod is fixed to the lower end of the support frame, and the positioning sleeve is located between the two brackets and connected to the corresponding brackets on both sides via connecting rods. The two brackets, the two connecting rods, and the positioning sleeve form a planar linkage mechanism. The positioning rod remains vertical. When the lower ends of the two brackets move away from each other, the positioning sleeve will move upward and fit onto the positioning rod. When the two brackets move closer together, the positioning sleeve will move downward and disengage from the positioning rod.

9. A basketball game timing method based on an electronic whistle, characterized in that: The basketball game timing system according to any one of claims 1-8 is used to time the basketball game, wherein the timing operation terminal is manually operated by the timekeeper and the electronic whistle is carried and used by the referee.

10. A basketball game timing device based on an electronic whistle, characterized in that: The system includes the basketball game timing system according to any one of claims 1-8 and a computer, wherein the central processing unit, timing unit and storage unit are integrated in the computer.

Images