阅读说明：本技术 一种足球场 (Football field ) 是由 叶大可 于 2019-08-13 设计创作，主要内容包括：本发明方案为一种足球场,包括场地、在场地上相对而设的二个球门,球门包括左立杆、右立杆、横杆,还包括一检测装置,一控制单元,与球门一一对应的驱动单元；检测装置用以检测场地上两支球队的控球率；球队实行镇守职责的球门称之为该球队的关联球门,控制单元根据球队的控球率对其关联球门的驱动单元下达指令,以使关联球门的横杆长度与球队的控球率相匹配；每一控球率对应有一个横杆长度；且随着球队控球率的变小,其关联球门的横杆长度呈现变大趋势。本发明方案具有以下优点：球队球门的横杆长度会随着控球率的变小而变大,从而保证足球比赛的观赏性和公平性。(The scheme of the invention is a football field, which comprises a field and two goals oppositely arranged on the field, wherein each goal comprises a left vertical rod, a right vertical rod and a cross rod, and further comprises a detection device, a control unit and driving units which are in one-to-one correspondence with the goals; the detection device is used for detecting the ball control rates of two teams on the field; the goal of the team performing the guarding duty is called as a related goal of the team, and the control unit gives an instruction to the driving unit of the related goal according to the ball control rate of the team so as to enable the length of the cross bar of the related goal to be matched with the ball control rate of the team; each ball control rate corresponds to one cross rod length; and as the ball control rate of the team becomes smaller, the cross bar length of the associated goal tends to become larger. The scheme of the invention has the following advantages: the cross bar length of the goal of the team can be increased along with the reduction of the ball control rate, so that the ornamental value and the fairness of the football match are ensured.)

1. A football court, includes place (1), on place (1) relative and two goals (2) of establishing, goal (2) include left pole setting (21), right pole setting (22), horizontal pole (23), left end connection of horizontal pole (23) the left pole setting (21) upper end, horizontal pole (23) right-hand member connection right pole setting (22) upper end, its characterized in that: the goal system is characterized by also comprising a detection device (3), a control unit (5) and driving units (6) which correspond to the goals (1) one by one; the length of the cross bar (23) is adjustable, and the driving unit (6) acts on the goal corresponding to the cross bar to adjust the length of the cross bar of the goal; the detection device (3) is used for detecting the ball control rates of two teams on the field (1), and the detection device (3) inputs a detection result into the control unit (5); the goal of the team performing the guarding duty is called as a related goal of the team, and the control unit (5) gives an instruction to the driving unit (6) of the related goal according to the ball control rate of the team so as to enable the length of the cross bar of the related goal to be matched with the ball control rate of the team; each ball control rate corresponds to one cross rod length; and as the ball control rate of the team becomes smaller, the cross bar length of the associated goal tends to become larger.

2. A football pitch according to claim 1, wherein: the realization mode that the length of the cross rod (23) is adjustable is as follows: the cross rod (23) is divided into a left rod (231) and a right rod (232), the left rod (231) is of a hollow structure, and the left part of the right rod (232) is inserted into the hollow structure of the left rod (231); the driving unit (6) comprises a left rail (B1), a right rail (B2), an electric vehicle (B3), an information processing part (B5), a resistance rod (B6), a copper sheet (B7), a slider (B8), a pull wire (B9), a first winding piece (B10), a second winding piece (B11), a third winding piece (B12), a fourth winding piece (B13), a right spring (B15), a first connecting rod (B16), a second connecting rod (B17), a power supply (B18) and a standard resistor (B19); the left track (B1) is arranged on the left side of the left upright (21), the left track (B1) is arranged in the left-right direction, the right track (B2) is arranged on the right side of the right upright (22), and the right track (B2) is arranged in the left-right direction; the electric vehicle (B3) can move along the left rail (B1), wheels of the electric vehicle (B3) are gears (B31), a tooth track (B52) matched with the gears (B31) is arranged on the left rail (B1), the electric vehicle (B3) is controlled by the information processing unit (B5), and the information processing unit (B5) receives a command from the control unit (5); one end of the copper sheet (B7) is connected with the electric vehicle (B3), and the other end of the copper sheet (B7) slides on the resistance rod (B6); the positive electrode of the power supply (B18) is electrically connected with the copper sheet (B7), the negative electrode of the power supply (B18), the standard resistor (B19) and the right end of the resistance rod (B6) are electrically connected in sequence, and two ends of the standard resistor (B19) are respectively led out of a lead to be connected with the information processing part (B5) so as to input a voltage signal to the information processing part (B5); the slider (B8) being movable along the right rail (B2); the first winding (B10) is arranged at the right end of the left rail (B1), the second winding (B11) is arranged at the rear side of the first winding (B10), the third winding (B12) is arranged at the right end of the right rail (B2), and the fourth winding (B13) is arranged at the rear side of the third winding (B12); one end of the pull wire (B9) is connected with the electric vehicle (B3), and the other end of the pull wire (B9) sequentially bypasses the first winding piece (B10), the second winding piece (B11), the fourth winding piece (B13) and the third winding piece (B12) and then is connected with the sliding block (B8); one end of the first connecting rod (B16) is connected with the electric vehicle (B3), and the other end of the first connecting rod is connected with the left upright rod (21); one end of the second connecting rod (B17) is connected with the sliding block (B8), and the other end of the second connecting rod (B17) is connected with the right vertical rod (22); the right spring (B15) is connected with the slide block (B8) at one end and the right track (B2) at the other end, and the slide block (B8) is urged to slide leftwards by the right spring (B15).

3. A football pitch according to claim 1, wherein: the realization mode that the length of the cross rod (23) is adjustable is as follows: the cross rod (23) is divided into a left rod (231) and a right rod (232), the left rod (231) is of a hollow structure, and the left part of the right rod (232) is inserted into the hollow structure of the left rod (231); the driving unit (6) comprises a left rail (B1), a right rail (B2), an electric vehicle (B3), a sliding block (B8), a pull wire (B9), a first winding piece (B10), a second winding piece (B11), a third winding piece (B12), a fourth winding piece (B13), a right spring (B15), a first connecting rod (B16) and a second connecting rod (B17); the left track (B1) is arranged on the left side of the left upright (21), the left track (B1) is arranged in the left-right direction, the right track (B2) is arranged on the right side of the right upright (22), and the right track (B2) is arranged in the left-right direction; the electric vehicle (B3) can move along the left rail (B1), wheels of the electric vehicle (B3) are gears (B31), a tooth track (B52) matched with the gears (B31) is arranged on the left rail (B1), the electric vehicle (B3) comprises a servo motor (B23) for driving the electric vehicle to run, and the servo motor (B23) receives an instruction from the control unit (5); the slider (B8) being movable along the right rail (B2); the first winding (B10) is arranged at the right end of the left rail (B1), the second winding (B11) is arranged at the rear side of the first winding (B10), the third winding (B12) is arranged at the right end of the right rail (B2), and the fourth winding (B13) is arranged at the rear side of the third winding (B12); one end of the pull wire (B9) is connected with the electric vehicle (B3), and the other end of the pull wire (B9) sequentially bypasses the first winding piece (B10), the second winding piece (B11), the fourth winding piece (B13) and the third winding piece (B12) and then is connected with the sliding block (B8); one end of the first connecting rod (B16) is connected with the electric vehicle (B3), and the other end of the first connecting rod is connected with the left upright rod (21); one end of the second connecting rod (B17) is connected with the sliding block (B8), and the other end of the second connecting rod (B17) is connected with the right vertical rod (22); the right spring (B15) is connected with the slide block (B8) at one end and the right track (B2) at the other end, and the slide block (B8) is urged to slide leftwards by the right spring (B15).

4. A football field comprises a field (1) and two goals (2) oppositely arranged on the field (1), wherein each goal (2) comprises a left vertical rod (21), a right vertical rod (22) and a cross rod (23), the left end of the cross rod (23) is connected with the upper end of the left vertical rod (21), the right end of the cross rod (23) is connected with the upper end of the right vertical rod (22), and the height of the cross rod (23) from the field (1) is called as a goal height, and the football field is characterized in that: the goal system is characterized by also comprising a detection device (3), a control unit (5) and driving units (6) which correspond to the goals (1) one by one; the goal height is adjustable, and the driving unit (6) acts on the corresponding goal to adjust the goal height; the detection device (3) is used for detecting the ball control rates of two teams on the field (1), and the detection device (3) inputs a detection result into the control unit (5); the goal of the team performing the guarding duty is called as a related goal of the team, and the control unit (5) gives an instruction to the driving unit (6) of the related goal according to the ball control rate of the team so as to enable the goal height of the related goal to be matched with the ball control rate of the team; each ball control rate corresponds to one goal height; and as the ball control rate of the team becomes smaller, the goal height of the associated goal becomes larger.

5. A football pitch according to claim 4, wherein: the realization mode of the adjustable goal height is as follows: a left hole (11) and a right hole (12) are formed in the field (1), the left vertical rod (21) is inserted into the left hole (11), the left vertical rod (21) can move up and down, the right vertical rod (22) is inserted into the right hole (12), and the right vertical rod (22) can move up and down; the driving unit (6) comprises a left electromagnetic telescopic structure (D1) and a right electromagnetic telescopic structure (D2); the lower end of the left electromagnetic telescopic structure (D1) is connected with the bottom of the left hole (11), the upper end of the left electromagnetic telescopic structure (D1) is connected with the lower end of the left upright rod (21) in a propping manner, and the left electromagnetic telescopic structure (D1) receives an instruction from the control unit (5); the lower end of the right electromagnetic telescopic structure (D2) is connected with the bottom of the right hole (12), the upper end of the right electromagnetic telescopic structure (D2) is connected with the lower end of the right vertical rod (22), and the right electromagnetic telescopic structure (D2) receives instructions from the control unit (5).

6. A football pitch according to claim 4, wherein: the realization mode of the adjustable goal height is as follows: a left hole (11) and a right hole (12) are formed in the field (1), the left vertical rod (21) is inserted into the left hole (11), the left vertical rod (21) can move up and down, the right vertical rod (22) is inserted into the right hole (12), and the right vertical rod (22) can move up and down; the driving unit (6) comprises a left electromagnetic telescopic structure (D1), a first winding piece (D3), a second winding piece (D4), a third winding piece (D5), a third winding piece (D6), a fifth winding piece (D7) and a pull rope (D8); the lower end of the left electromagnetic telescopic structure (D1) is connected with the bottom of the left hole (11), the upper end of the left electromagnetic telescopic structure (D1) is connected with the lower end of the left upright rod (21) in a propping manner, and the left electromagnetic telescopic structure (D1) receives an instruction from the control unit (5); the first winding piece (D3) is arranged at the bottom of the left hole (11), the second winding piece (D4) is arranged at the top of the left hole (11), the third winding piece (D5) is arranged at the rear side of the second winding piece (D4), the fifth winding piece (D7) is arranged at the top of the right hole (12), and the third winding piece (D6) is arranged at the rear side of the fifth winding piece (D7); stay cord (D8) one end is connected left pole (21) lower extreme, and the other end is walked around in proper order first around piece (D3), second around piece (D4), third around piece (D5), D around piece (D6), connect behind penta around piece (D7) right pole (22) lower extreme.

Technical Field

The invention relates to the field of football court manufacturing.

Background

As is well known, football is the first sport in the world, and an important football game tends to attract hundreds of millions of audiences, but with the continuous development of football, the shortcomings of football are continuously revealed, which are as follows: in order to pursue the achievement, the team often adopts intensive defense tactics, namely does not pursue the ball control rate, or deliberately reduces the ball control rate of the team, adopt the method of the quick counterattack to beat and defeat the opponent, the harm brought by this kind of football tactics is obvious, it has greatly reduced the ornamental of the football match, meanwhile, the weak team defeats the strong team through intensive defense tactics, impairs the fairness of the football match.

Disclosure of Invention

The technical problem to be solved by the scheme of the invention is to provide a football field aiming at the current situation of the prior art, wherein the length of the cross bar of the goal of the team is increased along with the reduction of the ball control rate on the football field, so that the appreciation and the fairness of the football match are ensured.

The technical scheme for solving the problems comprises the following steps: a football field comprises a field and two goals oppositely arranged on the field, wherein each goal comprises a left vertical rod, a right vertical rod and a cross rod, the left end of the cross rod is connected with the upper end of the left vertical rod, the right end of the cross rod is connected with the upper end of the right vertical rod, the football field also comprises a detection device, a control unit and driving units which are in one-to-one correspondence with the goals; the length of the cross bar is adjustable, and the driving unit acts on the goal corresponding to the cross bar to adjust the length of the cross bar of the goal; the detection device is used for detecting the ball control rates of two teams on the field and inputting the detection result into the control unit; the goal of the team performing the guarding duty is called as a related goal of the team, and the control unit gives an instruction to the driving unit of the related goal according to the ball control rate of the team so as to enable the length of the cross bar of the related goal to be matched with the ball control rate of the team; each ball control rate corresponds to one cross rod length; and as the ball control rate of the team becomes smaller, the cross bar length of the associated goal tends to become larger. When the football field provided by the scheme of the invention is used, the length of the cross bar of the associated goal corresponds to the ball control rate of the team, the length of the cross bar of the associated goal shows a trend of becoming larger as the ball control rate of the team becomes smaller, and the length of the cross bar of the associated goal shows a trend of becoming smaller as the ball control rate of the team becomes larger. For the teams who do not pursue the ball control rate or deliberately reduce the ball control rate of the team, the length of the cross bar of the associated goal is increased, the goal is easier to be broken by the other team, the measure can encourage the teams to pursue the ball control rate, both parties of the competition play the football with great effort, the appreciation of the football competition is ensured, meanwhile, the measure effectively inhibits the possibility that the weak team defeats the strong team through the intensive defense tactics, and the fairness of the football competition is ensured. In the scheme of the invention, as the ball control rate of the team becomes smaller, the length of the cross bar of the associated goal tends to become larger, and as the ball control rate of the team becomes larger, the length of the cross bar of the associated goal tends to become smaller. The crossbar length of the associated goal may gradually change with the change of the ball control rate, and of course, as the ball control rate of the team changes, it is also possible that the crossbar length of the associated goal changes in a stepwise manner, i.e., the ball control rate of the team is within a range, and the crossbar length of the associated goal remains unchanged, and once the range is exceeded, the crossbar length of the associated goal changes suddenly, for example, in the process of changing the ball control rate of the team from sixty percent to forty percent, the crossbar length of the associated goal remains unchanged, and once the ball control rate of the team is less than forty percent, the crossbar length of the associated goal changes suddenly, i.e., the crossbar length of the associated goal becomes suddenly longer. However, whether the change in crossbar length of the associated goal is gradual or stepped, it still follows from the overall view: the cross bar length of the associated goal tends to become larger as the ball control rate of the team becomes smaller, and the cross bar length of the associated goal tends to become smaller as the ball control rate of the team becomes larger. The detection device is used for detecting the ball control rate of two teams on a field, belongs to the prior art, adopts the detection device with the function in a plurality of football matches, mainly makes a video shot through the comparison process, and processes the shot image to obtain the ball control rate. The detection device belongs to the prior art and has a plurality of implementation modes, which are not described in detail below. In the scheme of the invention, each ball control rate corresponds to the length of a cross bar, the ball control rate and the length of the cross bar form a preset relationship, it should be noted that two teams on a football field have respective ball control rates, the preset relationship formed by the ball control rate and the length of the cross bar is applicable to the two teams, and as two players are divided into a team A and a team B, any one ball control rate value is selected, and the length of the cross bar corresponding to the team A when the team A is at the ball control rate value is equal to the length of the cross bar corresponding to the team B when the team B is at the ball control rate value. This clearly reflects the fairness of the football game. In the present invention, each ball control rate corresponds to one beam length, and it should be noted that one beam length corresponds to a plurality of ball control rates, which is often allowed in the description of the functional relationship, such as the function Y ═ f (X), where an X value is arbitrarily taken, which corresponds to one Y value, and a Y value is taken, which may correspond to a plurality of X values. In the scheme of the invention, the control unit gives an instruction to the driving unit of the associated goal according to the ball control rate of the team, so that the length of the cross bar of the associated goal is matched with the ball control rate of the team; each type of drive unit adjusts the length of the cross bar according to specific instructions, with different instructions corresponding to different cross bar lengths. For technical purposes, the control unit should associate the ball control rate of the team with the output command, i.e. the control unit is preset with the association between the ball control rate and the output command.

The driving unit acts on the goal corresponding to the driving unit to adjust the length of the cross bar of the goal, and the driving unit is particularly important to the scheme of the invention and should be simple and reasonable as much as possible.

Preferably, the implementation manner that the length of the cross bar is adjustable is as follows: the transverse rod is divided into a left placing rod and a right placing rod, the left placing rod is of a hollow structure, and the left part of the right placing rod is inserted into the hollow structure of the left placing rod; the driving unit comprises a left rail, a right rail, an electric vehicle, an information processing part, a resistance rod, a copper sheet, a sliding block, a pull wire, a first winding piece, a second winding piece, a third winding piece, a fourth winding piece, a right spring, a first connecting rod, a second connecting rod, a power supply and a standard resistor; the left rail is arranged on the left side of the left upright stanchion, the left rail is arranged in the left-right direction, the right rail is arranged on the right side of the right upright stanchion, and the right rail is arranged in the left-right direction; the electric vehicle can move along the left rail, wheels of the electric vehicle are gears, a tooth track matched with the gears is arranged on the left rail, the electric vehicle is controlled by the information processing part, and the information processing part receives instructions from the control unit; one end of the copper sheet is connected with the electric vehicle, and the other end of the copper sheet slides on the resistance rod; the positive electrode of the power supply is electrically connected with the copper sheet, the negative electrode of the power supply, the standard resistor and the right end of the resistance rod are electrically connected in sequence, and two ends of the standard resistor are respectively led out of a lead to be connected with the information processing part so as to input a voltage signal to the information processing part; the slide block can move along the right track; the first winding piece is arranged at the right end of the left rail, the second winding piece is arranged at the rear side of the first winding piece, the third winding piece is arranged at the right end of the right rail, and the fourth winding piece is arranged at the rear side of the third winding piece; one end of the stay wire is connected with the electric vehicle, and the other end of the stay wire is connected with the sliding block after sequentially winding around the first winding piece, the second winding piece, the fourth winding piece and the third winding piece; one end of the first connecting rod is connected with the electric vehicle, and the other end of the first connecting rod is connected with the left upright rod; one end of the second connecting rod is connected with the sliding block, and the other end of the second connecting rod is connected with the right vertical rod; one end of the right spring is connected with the sliding block, the other end of the right spring is connected with the right track, and the right spring urges the sliding block to slide leftwards. In this technical scheme, the control unit assigns the instruction of representing horizontal pole length to drive unit according to ball control rate, and drive unit operates the electric motor car in view of the above, and along with the operation of electric motor car, the pulling wire pulling slider puts pole and the right side and puts pole synchronous motion, and horizontal pole length changes, and at this in-process, drive unit's information processing portion carries out real time monitoring to horizontal pole length, specifically as follows: along with the operation of electric motor car, the position of copper sheet on the resistance lever changes, and the voltage of standard resistance both ends to information processing portion input also can change, and the voltage of standard resistance both ends to information processing portion input promptly and horizontal pole length one-to-one, information processing portion just can know horizontal pole length through reading the voltage input at standard resistance both ends, when information processing portion learns that current horizontal pole length is unanimous with the horizontal pole length that the control unit assigned the instruction and represented, information processing portion control electric motor car stop operation.

Preferably, the implementation manner that the length of the cross bar is adjustable is as follows: the transverse rod is divided into a left placing rod and a right placing rod, the left placing rod is of a hollow structure, and the left part of the right placing rod is inserted into the hollow structure of the left placing rod; the driving unit comprises a left rail, a right rail, an electric vehicle, a sliding block, a pull wire, a first winding piece, a second winding piece, a third winding piece, a fourth winding piece, a right spring, a first connecting rod and a second connecting rod; the left rail is arranged on the left side of the left upright stanchion, the left rail is arranged in the left-right direction, the right rail is arranged on the right side of the right upright stanchion, and the right rail is arranged in the left-right direction; the electric vehicle can move along the left track, wheels of the electric vehicle are gears, a tooth path matched with the gears is arranged on the left track, the electric vehicle comprises a servo motor for driving the electric vehicle to run, and the servo motor receives an instruction from the control unit; the slide block can move along the right track; the first winding piece is arranged at the right end of the left rail, the second winding piece is arranged at the rear side of the first winding piece, the third winding piece is arranged at the right end of the right rail, and the fourth winding piece is arranged at the rear side of the third winding piece; one end of the stay wire is connected with the electric vehicle, and the other end of the stay wire is connected with the sliding block after sequentially winding around the first winding piece, the second winding piece, the fourth winding piece and the third winding piece; one end of the first connecting rod is connected with the electric vehicle, and the other end of the first connecting rod is connected with the left upright rod; one end of the second connecting rod is connected with the sliding block, and the other end of the second connecting rod is connected with the right vertical rod; one end of the right spring is connected with the sliding block, the other end of the right spring is connected with the right track, and the right spring urges the sliding block to slide leftwards. In this technical scheme, the control unit assigns the instruction that represents horizontal pole length to servo motor according to ball control rate, and servo motor decides turned angle according to this, and servo motor makes the electric motor car operation, along with the operation of electric motor car, the pulling wire pulling slider, left side put the pole and right side put the pole synchronous motion, and horizontal pole length changes, and servo motor can control the electric motor car position according to the instruction accurately to the length to horizontal pole length is confirmed and is controlled.

Obviously, the driving unit has more implementation manners, such as pulling the left vertical rod by an electromagnetic telescopic structure, the electromagnetic telescopic structure is a common driving original, the electromagnetic telescopic structure generally comprises two electromagnets, an electromagnet A is fixed at the right end of the slide rail, an electromagnet B slides on the slide rail, the two electromagnets are in a mutual attraction state or a mutual repulsion state by changing a power supply manner, when the two electromagnets are mutually attracted, the electromagnet B is attracted to the right end of the slide rail, the electromagnetic telescopic structure is in a contraction state, when the two electromagnets are mutually repelled, the electromagnet B is repelled to the left end of the slide rail, the electromagnetic telescopic structure is in an expansion state, obviously, the left vertical rod can be driven by the movement of the electromagnet B, in fact, the essence of the driving unit is a controllable driving technology, and the technology is widely applied to the fields of robots and numerical control lathes, the field of gas driving. As in the robotic field, controlled telescoping motion is often not uncommon; in the field of numerical control lathes, a cutter needs to be accurately sent into a station according to an instruction, and the operation is actually controllable telescopic motion; in the field of gas driving, when a cylinder is communicated with high-pressure gas, a piston is driven forwards, and when the cylinder is communicated with the atmosphere, the piston is reset backwards under the action of a spring, so that the left vertical rod can be driven by the motion of the piston obviously.

Of course, the height of the cross rod is controlled by utilizing the ball control rate, and a good technical effect can be achieved.

The technical scheme for solving the problems can also be as follows: the utility model provides a football field, includes the place, relative and two goals established on the place, and the goal includes left pole setting, right pole setting, horizontal pole, and left pole setting upper end is connected to the horizontal pole left end, and right pole setting upper end is connected to the horizontal pole right-hand member, and the goal height is called apart from the height in place to the horizontal pole, its characterized in that: the device also comprises a detection device, a control unit and driving units which are in one-to-one correspondence with the goals; the height of the goal is adjustable, and the driving unit acts on the corresponding goal to adjust the height of the goal; the detection device is used for detecting the ball control rates of two teams on the field and inputting the detection result into the control unit; the goal of the team performing the guarding duty is called as a related goal of the team, and the control unit gives an instruction to the driving unit of the related goal according to the ball control rate of the team so as to enable the goal height of the related goal to be matched with the ball control rate of the team; each ball control rate corresponds to one goal height; and as the ball control rate of the team becomes smaller, the goal height of the associated goal becomes larger. When the football field provided by the scheme of the invention is used, the ball control rate of the team corresponds to the goal height of the associated goal, the goal height of the associated goal shows a trend of increasing as the ball control rate of the team becomes smaller, and the goal height of the associated goal shows a trend of decreasing as the ball control rate of the team becomes larger. For the teams who do not pursue the ball control rate or deliberately reduce the ball control rate of the team, the height of the goal associated with the goal is increased, the goal is easier to be broken by the other team, the measure can encourage the teams to pursue the ball control rate, both parties of the competition play the attacking football greatly, the appreciation of the football competition is ensured, meanwhile, the measure effectively inhibits the possibility that the weak team defeats the strong team through the intensive defense tactics, and the fairness of the football competition is ensured. In the scheme of the invention, as the ball control rate of the team becomes smaller, the goal height of the associated goal tends to become larger, and as the ball control rate of the team becomes larger, the goal height of the associated goal tends to become smaller. The goal height of the associated goal may gradually change with the change of the ball control rate, and of course, as the ball control rate changes, it is also possible that the goal height of the associated goal changes in a stepwise manner, that is, the ball control rate of the team is within a section of range, the goal height of the associated goal remains unchanged, and once the range is exceeded, the goal height of the associated goal changes suddenly, for example, in the process of changing the ball control rate from sixty percent to forty percent, the goal height of the associated goal remains unchanged, and once the ball control rate is less than forty percent, the goal height of the associated goal changes suddenly, that is, the goal height of the associated goal becomes suddenly higher. However, whether the change in goal height of the associated goal is gradual or stepped, it still follows from the overall view: as the ball control rate of the team becomes smaller, the goal height of the associated goal tends to become larger, and as the ball control rate of the team becomes larger, the goal height of the associated goal tends to become smaller. In the scheme of the invention, each ball control rate corresponds to a goal height, and the ball control rate and the goal height form a predetermined relationship, it should be noted that two teams on a football field have respective ball control rates, and the predetermined relationship formed by the ball control rate and the goal height is applicable to the two teams, and when the two players are divided into a first team and a second team, a ball control rate value is selected, and the goal height corresponding to the first team at the ball control rate value is equal to the goal height corresponding to the second team at the ball control rate value. This clearly reflects the fairness of the football game. In the present solution, each goal height corresponds to one goal height, and it should be noted that one goal height corresponds to a plurality of goal heights that may be allowed, as often appears in the description of the functional relationship, such as the function Y ═ f (X), taking any X value that corresponds to one Y value, and taking a Y value that may correspond to a plurality of X values. In the scheme of the invention, the control unit gives an instruction to the driving unit of the associated goal according to the ball control rate of the team, so that the goal height of the associated goal is matched with the ball control rate of the team; each driving unit adjusts the height of the goal according to a specific instruction, and different instructions correspond to different heights of the goal. For technical purposes, the control unit should associate the ball control rate of the team with the output command, i.e. the control unit is preset with the association between the ball control rate and the output command.

Preferably, the goal height adjustable implementation mode is as follows: a left placing hole and a right placing hole are formed in the field, the left vertical rod is inserted in the left placing hole and can move up and down, the right vertical rod is inserted in the right placing hole and can move up and down; the driving unit comprises a left electromagnetic telescopic structure and a right electromagnetic telescopic structure; the lower end of the left electromagnetic telescopic structure is connected with the bottom of the left hole, the upper end of the left electromagnetic telescopic structure is connected with the lower end of the left upright rod in a propping manner, and the left electromagnetic telescopic structure receives an instruction from the control unit; the lower end of the right electromagnetic telescopic structure is connected with the bottom of the right hole, the upper end of the right electromagnetic telescopic structure is connected with the lower end of the right vertical rod in a propping mode, and the right electromagnetic telescopic structure receives instructions from the control unit. In this technical scheme, the control unit puts the electromagnetism extending structure and puts electromagnetism extending structure in the right side to left according to the accuse ball rate and issues the instruction, and when the accuse ball rate of ball team was less than predetermineeing the threshold, the control unit control left side was put electromagnetism extending structure and is put electromagnetism extending structure in the right side and open the position, left side was put electromagnetism extending structure drive left side pole setting upward movement, and right side is put electromagnetism extending structure drive right side pole setting upward movement, the high grow at goal. When the ball control rate of the team is larger than or equal to a preset threshold value, the control unit controls the left electromagnetic telescopic structure and the right electromagnetic telescopic structure to be in the contraction position, the left vertical rod and the right vertical rod move downwards, and the height of the goal is reduced.

Preferably, the goal height adjustable implementation mode is as follows: a left placing hole and a right placing hole are formed in the field, the left vertical rod is inserted in the left placing hole and can move up and down, the right vertical rod is inserted in the right placing hole and can move up and down; the driving unit comprises a left electromagnetic telescopic structure, an A winding piece, a B winding piece, a C winding piece, a D winding piece, a E winding piece and a pull rope; the lower end of the left electromagnetic telescopic structure is connected with the bottom of the left hole, the upper end of the left electromagnetic telescopic structure is connected with the lower end of the left upright rod in a propping manner, and the left electromagnetic telescopic structure receives an instruction from the control unit; the first winding piece is arranged at the bottom of the left hole, the second winding piece is arranged at the top of the left hole, the third winding piece is arranged at the rear side of the second winding piece, the fifth winding piece is arranged at the top of the right hole, and the third winding piece is arranged at the rear side of the fifth winding piece; one end of the pull rope is connected with the lower end of the left vertical rod, and the other end of the pull rope is connected with the lower end of the right vertical rod after sequentially passing around the first winding piece, the second winding piece, the third winding piece and the fifth winding piece. In this technical scheme, the control unit puts the electromagnetism extending structure left according to the accuse ball rate and gives the instruction, and when the accuse ball rate of team was less than predetermineeing the threshold, the control unit control left side was put the electromagnetism extending structure and is in the exhibition and open the position, and left side is put the left pole setting upward movement of electromagnetism extending structure drive, and right pole setting upward movement, the high grow at goal under the drive of stay cord. When the ball control rate of the team is larger than or equal to a preset threshold value, the control unit controls the left electromagnetic telescopic structure to be in a contraction position, the left vertical rod and the right vertical rod move downwards, and the height of the goal is reduced.

Of course, the driving unit has more realization modes, if the left vertical rod is a telescopic rod formed by a plurality of rod bodies in a sliding connection mode, the right vertical rod is a telescopic rod formed by a plurality of rod bodies in a sliding connection mode, a plurality of electromagnetic telescopic structures can be arranged on the left vertical rod and the right vertical rod, the variable value of the goal height is more, or a tooth path is arranged at the lower part of the left vertical rod, a gear matched with the tooth path is arranged on a left hole, and the gear is driven by a servo motor, so that the height of the left vertical rod can be controllably adjusted. In fact, the essence of the driving unit is a controllable driving technique, which is widely used in the fields of robotics, numerically controlled lathes, and gas drives. As in the robotic field, controlled telescoping motion is often not uncommon; in the field of numerical control lathes, a cutter needs to be accurately sent into a station according to an instruction, and the operation is actually controllable telescopic motion; in the field of gas driving, when a cylinder is communicated with high-pressure gas, a piston is driven forwards, and when the cylinder is communicated with the atmosphere, the piston is reset backwards under the action of a spring, so that the left vertical rod can be driven by the motion of the piston obviously.

Compared with the prior art, the scheme of the invention is a football field, which comprises a field and two goals oppositely arranged on the field, wherein each goal comprises a left vertical rod, a right vertical rod and a cross rod, and further comprises a detection device, a control unit and driving units which are in one-to-one correspondence with the goals; the detection device is used for detecting the ball control rates of two teams on the field; the goal of the team performing the guarding duty is called as a related goal of the team, and the control unit gives an instruction to the driving unit of the related goal according to the ball control rate of the team so as to enable the length of the cross bar of the related goal to be matched with the ball control rate of the team; each ball control rate corresponds to one cross rod length; and as the ball control rate of the team becomes smaller, the cross bar length of the associated goal tends to become larger. The scheme of the invention has the following advantages: the cross bar length of the goal of the team can be increased along with the reduction of the ball control rate, so that the ornamental value and the fairness of the football match are ensured.

Drawings

Fig. 1 is a schematic overall structure diagram of embodiments 1 and 2 of the present invention;

fig. 2 is a schematic view of the overall structure of a drive unit in embodiment 1 of the present invention;

FIG. 3 is a schematic diagram showing the relationship between the ball control rate and the length of the cross bar in example 1 of the present invention;

fig. 4 is a schematic view of the overall structure of a drive unit in embodiment 2 of the present invention;

FIG. 5 is a schematic diagram showing the relationship between the ball control rate and the length of a cross bar in example 2 of the present invention;

fig. 6 is a schematic overall structure diagram of embodiments 3 and 4 of the present invention;

fig. 7 is a schematic view of the entire structure of a driving unit in embodiment 3 of the present invention;

FIG. 8 is a schematic diagram of the relationship between the ball control rate and the goal height in examples 3 and 4 of the present invention;

fig. 9 is a schematic view of the overall structure of the driving unit in embodiment 4 of the present invention.

Detailed Description

The scheme of the present invention is further described in detail with reference to the following examples: