CN213667713U

CN213667713U - Rope skipping electronic counting device

Info

Publication number: CN213667713U
Application number: CN202022307792.0U
Authority: CN
Inventors: 戴见霖
Original assignee: Anhui Dongfang Zaoji Modular Architecture Co ltd
Current assignee: Anhui Play Just Play New Retail Co.,Ltd.
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-07-13
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a rope skipping electronic counting device. The existing product can not count in the positive and negative directions and is inaccurate in counting. The utility model discloses a pivot subassembly, response subassembly, the counting circuit of setting on rope skipping handle or in. The rotating component of the handle is connected with the holding component through the rotating shaft assembly, and the rotating component and the holding component can rotate relatively. The rotating shaft is fixedly connected with the rotating part at one end, the rotating block is fixedly installed at the other end, the magnetic steel of the sensing assembly is fixedly installed on the rotating block, the positions of the two Hall switches correspond to the position of the circular motion track of the magnetic steel, and when the magnetic steel rotates to a specific position, the two Hall switches can sense the magnetism of the magnetic steel. The single chip microcomputer is connected with the signal output ends of the two Hall switches and counts according to the input logic information. The utility model discloses a forward and reverse two-way count has avoided the unsafe phenomenon of current counting assembly count.

Description

Rope skipping electronic counting device

Technical Field

The utility model belongs to the technical field of the historical relic's article, a rope skipping is related to, specifically a rope skipping electron counting assembly.

Background

The rope skipping sport is a physical exercise and fitness project which is suitable for both the old and the young. Has the advantages that: promoting brain development, enhancing coordination ability, improving balance ability, and promoting children growth; the heart and lung function is exercised, the skipping rope can accelerate blood to flow back to the heart, the blood pumping function of the heart is enhanced, and the endurance is further enhanced; muscles can be exercised, the rope skipping for 15 minutes is equivalent to running for 30 minutes, and the jumping action almost mobilizes all muscles of the whole body, so that the muscle groups become firmer, particularly the muscles of legs, and the muscles of the back and the abdomen are exercised to different degrees; can burn fat and shape slim body. The long-term persistence of the skipping rope can effectively burn fat of legs, buttocks and abdomen, so that the figure becomes slender and slim, and a boxer can also subtract redundant fat through the skipping rope before the competition. Therefore, the rope skipping sports are popular to people and are also necessary items for pupils to repair.

Through development, the existing skipping rope has some improvements and advances in structure and function. If the skipping rope capable of realizing the counting function appears, the functions of playing music and the like are added. The counting function of the skipping rope mainly comprises the following two modes:

1. mechanical counters are used, that is, machines that count in a mechanical manner. The principle that the rotation of a rope skipping rotating shaft drives a gear to rotate and mechanically count is adopted. The skipping ropes of such mechanical counters tend to be bulky and of insufficient precision. Especially long-term wear will also further degrade accuracy and lead to inaccurate counting. With the formation of wireless propagation of counting data, the data of rope skipping counting needs to be transmitted to a network through Bluetooth, but a mechanical counter has no way to realize the function, and the requirement of the era is not met.

2. The electronic counter is basically used for triggering an electronic circuit to be switched on by the rotation of a rotating shaft of a skipping rope and is used as a counting basis. There are several methods for triggering electronic circuit, among which there is spring plate pressed by the rotating shaft to connect the circuit, and the other is that the rotating shaft drives magnet which triggers the hall switch or dry reed tube to connect the counting circuit. These counting methods count once only once by touching. However, the existing device for counting by using magnetic force only adds one by the magnet through a hall switch or a reed switch counter, but cannot ensure that the counter can be added by the counter after the rotating shaft of the skipping rope rotates for a complete circle. Meanwhile, the rotating shaft cannot be identified to be clockwise or anticlockwise, and clockwise and anticlockwise rotation is accounted once. Therefore, the counting can not confirm the forward direction or the reverse direction of the skipping rope, the counting is carried out in both cases, and the counter can superpose the two cases. Even, when the rotating shaft repeatedly shakes in a small range, as long as the contact of the elastic sheet just can touch the circuit to be connected, or the magnet just repeatedly touches the Hall switch or the reed switch to be connected, the circuit can be counted once every touch. But the rotating shaft does not rotate 360 degrees at this time. This causes a false count situation to occur. Therefore, although the electronic counting skipping ropes are simple and convenient to count and can also realize on-line data transmission, the counting is inaccurate due to design flaws of the skipping ropes, accurate counting cannot be achieved, and the skipping ropes cannot be used in skipping rope competitions.

Disclosure of Invention

The utility model aims at providing a rope skipping electronic counting device for to prior art not enough. And (3) realizing accurate counting: the counting is carried out only after rotating for 360 degrees, and if the rotating is carried out for 360 degrees, the counting is carried out separately.

The utility model discloses a pivot subassembly, response subassembly, the counting circuit of setting on rope skipping handle or in. The skipping rope handle comprises a rotating part and a holding part, the rotating part is connected with the holding part through a rotating shaft assembly, and the rotating part and the holding part can rotate relatively; the rope body of the skipping rope is fixedly arranged on the rotating part, and the sensing assembly and the counting circuit are arranged in the holding part.

The rotating shaft assembly comprises a rotating shaft and a rotating block; one end of the rotating shaft is fixedly connected with the rotating part, and when the rotating part rotates, the rotating shaft synchronously rotates; the other end of the rotating shaft extends into the holding part and is movably connected with the holding part; the turning block is fixed at the other end of the rotating shaft and is provided with a magnetic steel mounting platform.

The induction component comprises a piece of magnetic steel and two Hall switches; the magnetic steel is fixedly arranged on the magnetic steel mounting platform of the rotating block, and when the rope body of the skipping rope drives the rotating part to rotate together with the rotating shaft, the magnetic steel does circular motion by taking the central axis of the holding part as a central axis; the positions of the two Hall switches correspond to the circular motion track of the magnetic steel; when the magnetic steel rotates to a specific position, the two Hall switches can both sense the magnetism of the magnetic steel, both generate Hall effect, and the output level state is turned over.

The counting circuit comprises a circuit board and a single chip microcomputer, and the single chip microcomputer counts according to input logic information; the signal output ends of the two Hall switches are connected with the two IO ports of the single chip microcomputer, and the single chip microcomputer receives signals output by the two Hall switches.

Furthermore, the rotating shaft assembly further comprises a rotating bearing, the rotating shaft is fixedly connected with an inner ring of the rotating bearing, and an outer ring of the rotating bearing is connected with the holding part. The rotating bearing can rotate more flexibly, and the friction resistance is reduced.

Further, still include the display screen, the display screen is connected with the singlechip, shows the count value, can directly perceivedly read the number of times of skipping.

Furthermore, the Bluetooth device further comprises a Bluetooth sending module, wherein the Bluetooth sending module is connected with the single chip microcomputer and sends the counting value to an external receiving device, and the external receiving device can be a mobile phone or a tablet computer and the like.

Further, when the hall switches output a high level when there is no magnetic force sensing, the position settings of the two hall switches satisfy the following condition:

(1) when the magnetic steel moves to a position close to the first Hall switch, the first Hall switch is positioned in the effective magnetic range of the magnetic steel, and when the value of the sensed magnetic induction intensity reaches a certain degree, the trigger integrated in the first Hall switch is turned over, the state of the output level of the trigger is turned over along with the turning, and the low level is output; the second Hall switch is not in the effective magnetic range of the magnetic steel, the sensed magnetic induction intensity is not enough to turn over a trigger integrated in the second Hall switch, and the second Hall switch continues to output a high level;

(2) when the magnetic steel moves to a position between the first Hall switch and the second Hall switch, the two Hall switches are both positioned in the effective magnetic range of the magnetic steel, and the first Hall switch continues to output low level; when the value of the magnetic induction intensity sensed by the second Hall switch reaches a certain degree, the trigger integrated in the second Hall switch is also turned over, the output level state is also turned over, and a low level is also output;

(3) when the magnetic steel moves to a position far away from the first Hall switch, the first Hall switch is separated from the effective magnetic range of the magnetic steel, and a high level is output; the second Hall switch is still in the effective magnetic range of the magnetic steel, and continues to output low level;

(4) when the magnetic steel moves to a position far away from the two Hall switches, the first Hall switch and the second Hall switch both leave the effective magnetic force range of the magnetic steel, and the two Hall switches both output high levels.

The Hall switches output low level when no magnetic force is induced, and the position setting of the two Hall switches meets the following conditions:

(1) when the magnetic steel moves to a position close to the first Hall switch, the first Hall switch is positioned in the effective magnetic range of the magnetic steel, and when the value of the sensed magnetic induction intensity reaches a certain degree, the trigger integrated in the first Hall switch is turned over, the state of the output level of the trigger is also turned over, and the high level is output; the second Hall switch is not in the effective magnetic range of the magnetic steel, the sensed magnetic induction intensity is not enough to turn over a trigger integrated in the second Hall switch, and the second Hall switch continues to output a low level;

(2) when the magnetic steel moves to a position between the first Hall switch and the second Hall switch, the two Hall switches are both positioned in the effective magnetic range of the magnetic steel, and the first Hall switch continues to output high level; when the value of the magnetic induction intensity sensed by the second Hall switch reaches a certain degree, the trigger integrated in the second Hall switch is also turned over, the state of the output level is also turned over, the high level is output, and the high level is also output;

(3) when the magnetic steel moves to a position far away from the first Hall switch, the first Hall switch is separated from the effective magnetic range of the magnetic steel, and a low level is output; the second Hall switch is still in the effective magnetic range of the magnetic steel, and continues to output high level;

(4) when the magnetic steel moves to a position far away from the two Hall switches, the first Hall switch and the second Hall switch both leave the effective magnetic force range of the magnetic steel, and the two Hall switches both output low levels.

Furthermore, the two Hall switches are arranged on the same surface of the circuit board side by side and are arranged on two sides of the plane center line of the circuit board, and the distance between the two Hall switches is 1-12 mm; or the two Hall switches are respectively arranged on the front surface and the back surface of the circuit board and are both positioned at the eccentric positions on the same side of the circuit board, and the distance between the central lines, perpendicular to the plane of the circuit board, of the two Hall switches is 0-8 mm. When the magnetic steel rotates to a specific position, the two Hall switches can sense the magnetism of the magnetic steel, Hall effect is generated, and the output level state is overturned.

Adopt the utility model discloses the technique, the rope body drives the pivot subassembly and rotates, and the magnet steel of installing on the mounting platform on the pivot subassembly revolutes the rotation of pivot the central axis, and at the in-process of rotating 360 degrees, reachs the different relative position of two hall switches on the circuit board in the handle respectively, and the magnet steel is also in the change of two hall switch's magnetic induction intensity value continuous, and then four kinds of logic states of appearance of hall switch: two hall switches all output high level, and a hall switch outputs low level, and another hall switch outputs high level, and two hall switches all output low level, and a hall switch outputs high level, and another hall switch outputs low level. Of course, the high and low levels may be reversed using different hall switches. The output end of the Hall switch outputs an analog signal, and the analog signal is received by the singlechip. The single chip microcomputer counts according to the output signal and displays the output signal on a display screen, so that people can read the output signal conveniently.

The utility model provides a display screen is connected with the singlechip for show the count value, and bluetooth sending module is connected with the singlechip, be used for sending the count value to outside receiving equipment, all belong to very ripe prior art, corresponding design can be made under the condition that does not need creative work to ordinary electron technical staff as required. The main invention of the utility model is to adopt two Hall switches to realize the forward and reverse counting mode.

The utility model discloses not only can count in the forward direction, also can realize the reverse count, owing to need count 1 time through four complete states, avoided the unsafe phenomenon of current counting assembly count simultaneously. The utility model discloses a two hall switches have realized distinguishing corotation and reversal promptly, have reduced the manufacturing cost of product under the prerequisite that satisfies accurate count.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic cross-sectional view of the spindle assembly shown in FIG. 1;

fig. 3 is a schematic diagram of the position of a hall switch according to the present invention;

fig. 4 is a schematic diagram of another hall switch position according to the present invention;

fig. 5 is a schematic diagram of another hall switch position according to the present invention;

FIG. 6 is a schematic diagram of magnetic induction ranges of two Hall switches;

fig. 7 is a schematic diagram of the working logic of the present invention.

Detailed Description

As shown in fig. 1 and 2, the electronic counting device for rope skipping comprises a rotating shaft assembly, an induction assembly and a counting circuit, wherein the rotating shaft assembly, the induction assembly and the counting circuit are arranged in a rope skipping handle.

The rope skipping handle comprises a rotating component I and a holding component II, wherein the rotating component I and the holding component II are connected through a rotating shaft assembly, and therefore the rotating component I and the holding component II can rotate relatively. The rope body fixed mounting of rope skipping is on rotating part I, and response subassembly, counting circuit set up in holding part II.

The pivot subassembly includes pivot 1, rolling bearing 2 and turning block 3, and the fixed bottom that sets up at rotating part I of the one end of fixed axle 1, and pivot 1 meets with rolling bearing 2's inner circle is fixed, and rolling bearing 2's outer lane is connected with holding part II, and turning block 3 is fixed at the other end of pivot 1, and turning block 3 has a magnet steel mounting platform.

The induction component comprises a piece of magnetic steel 4 and two Hall switches 5-1 and 5-2. The magnetic steel 4 is fixedly arranged on the mounting platform of the rotating block 3 and is arranged towards the circuit board 6. When the rope body of the skipping rope rotates together with the rotating part I, the rotating shaft 1 is driven to synchronously rotate, and the magnetic steel 4 makes circular motion by taking the central axis of the holding part II as a central axis. The two Hall switches 5-1 and 5-2 are arranged on the circuit board 6 and correspond to the circular motion track position of the magnetic steel 4, and when the magnetic steel 4 rotates to a specific position, the two Hall switches can both sense the magnetism of the magnetic steel 4.

The two hall switches can adopt the following installation modes (the dotted lines in fig. 3, 4 and 5 are the circular motion tracks of the magnetic steel, and the arrows are the motion directions of the magnetic steel):

1. as shown in fig. 3, two hall switches 5-1 and 5-2 are arranged side by side on the same side of the circuit board 6 and on either side of the center line of the circuit board. The distance S1 between the two Hall switches is 1-12 mm.

2. As shown in FIG. 4, two Hall switches 5-1 and 5-2 are respectively arranged on the front and back surfaces of the circuit board 6 and are positioned at the eccentric positions on the same side of the circuit board, and the distance S2 between the center lines of the two Hall switches perpendicular to the plane of the circuit board is not more than 8 mm.

3. As shown in fig. 5, two hall switches 5-1 and 5-2 are respectively disposed on the front and back surfaces of the circuit board 6, and the two hall switches are mirror-symmetrical at the same eccentric position of the circuit board and with the circuit board as the center plane.

For the Hall switches which output high level when no magnetic force is induced, the position settings of the two Hall switches meet the following conditions:

(1) when the magnetic steel 4 moves to a position close to the first Hall switch 5-1, the first Hall switch 5-1 is positioned in the effective magnetic range of the magnetic steel, and when the value of the sensed magnetic induction intensity reaches a certain degree, the trigger integrated in the first Hall switch 5-1 is turned over, the state of the output level is also turned over, and the low level is output; the second Hall switch 5-2 is not in the effective magnetic range of the magnetic steel, the sensed magnetic induction intensity is not enough to turn over a trigger integrated in the second Hall switch, and the second Hall switch 5-2 continues to output high level;

(2) when the magnetic steel 4 moves to a position between the first Hall switch and the second Hall switch, the two Hall switches are both positioned in the effective magnetic range of the magnetic steel, and the first Hall switch 5-1 continues to output low level; when the value of the magnetic induction intensity sensed by the second Hall switch 5-2 reaches a certain degree, the trigger integrated in the second Hall switch 5-2 is also turned over, the state of the output level is also turned over, and a low level is also output;

(3) when the magnetic steel 4 moves to a position far away from the first Hall switch 5-1, the first Hall switch 5-1 is separated from the effective magnetic range of the magnetic steel, and a high level is output; the second Hall switch 5-2 is still in the effective magnetic range of the magnetic steel, and continues to output low level;

(4) when the magnetic steel moves to a position far away from the two Hall switches, the first Hall switch and the second Hall switch both leave the effective magnetic force range of the magnetic steel, and the two Hall switches 5-1 and 5-2 both output high levels.

The counting circuit comprises a circuit board and a singlechip (not shown in the figure), and the singlechip counts according to the input logic information. Counting circuits are well established prior art. The power input end of each Hall switch is connected with the positive electrode of the power supply and is grounded through the first filter capacitor, the signal output end of each Hall switch is grounded through the second filter capacitor, the signal output ends of the two Hall switches are connected with the two IO ports of the single chip microcomputer, and the single chip microcomputer receives signals output by the two Hall switches.

The rope skipping electronic counting device can also be provided with a display screen, and the display screen is connected with the single chip microcomputer and used for displaying a counting value. The Bluetooth transmitting module can be also arranged and is connected with the single chip microcomputer to transmit the count value to external receiving equipment such as a mobile phone. The display screen, the bluetooth sending module and the connection mode are well established prior art and are not described in detail.

As shown in fig. 6, the effective magnetic force range of the magnetic steel 4 to the first hall switch 5-1 is an α interval, and the effective magnetic force range of the magnetic steel 4 to the second hall switch 5-2 is a β interval. Because the first Hall switch 5-1 and the second Hall switch 5-2 are designed side by side, and the distance meets the condition, the alpha interval and the beta interval are partially overlapped, and the overlapped interval is the common effective magnetic force range of the first Hall switch 5-1 and the second Hall switch 5-2.

The Hall switch is positioned in a magnetic area, namely, when the magnetic force of the magnetic steel is induced, the Hall switch outputs a low level 0; the Hall switch is located no magnetism region, when the magnetic force of response magnet steel promptly, output high level 1. Four logic states are thus formed:

the state A shows that the first Hall switch 5-1 and the second Hall switch 5-2 are both outside the effective magnetic force range of the magnetic steel, the first Hall switch 5-1 outputs a high level 1 to the singlechip, the second Hall switch 5-2 also outputs a high level 1 to the singlechip, and the code 11;

the state B shows that the first Hall switch 5-1 is in the effective magnetic force range of the magnetic steel, the second Hall switch 5-2 is out of the effective magnetic force range of the magnetic steel, the first Hall switch 5-1 outputs a low level 0 to the single chip microcomputer, the second Hall switch 5-2 still outputs a high level 1 to the single chip microcomputer, and the code is 01;

the state C shows that the first Hall switch 5-1 and the second Hall switch 5-2 are both in the effective magnetic force range of the magnetic steel, the first Hall switch 5-1 continues to output the low level 0 to the single chip microcomputer, the second Hall switch 5-2 also outputs the low level 0 to the single chip microcomputer, and the code is 00;

and the state D shows that the first Hall switch 5-1 is out of the effective magnetic force range of the magnetic steel, the second Hall switch 5-2 is in the effective magnetic force range of the magnetic steel, the first Hall switch 5-1 outputs a high level 1 to the singlechip, the second Hall switch 5-2 still outputs a low level 0 to the singlechip, and the code 10.

As shown in fig. 7, when the magnetic steel 4 moves in a clockwise circular motion (i.e. the rotating component I rotates forward), the output levels of the two hall switches cycle in the order of four logic states A, B, C, D. When the magnetic steel 4 synchronously rotates around the shaft at the rotating part I, the single chip microcomputer counts for 1 time according to one of four states of ABCD, BCDA, CDBA and DBAC; when the magnetic steel rotates around the shaft for one circle again, the single chip microcomputer counts for 1 time again, and the accumulated count is 2. And so on, and the counted number is read by a display device.

In the above-mentioned device, when the magnetic steel 4 moves in a counterclockwise circular motion (i.e. the rotating component I rotates reversely), the output levels of the two hall switches cycle in the order of the four logic states A, D, C, B. When the magnetic steel rotates around the shaft in a reverse direction for a circle, the single chip microcomputer counts reversely for 1 time according to one of four states of DCBA, CBAD, BADC and ADCB, and when the magnetic steel rotates around the shaft for a circle in a reverse direction again, the single chip microcomputer counts a reverse number for 1 time again, and the accumulated number is reverse 2. And so on, and the counted number is read by a display device.

After the singlechip is awakened, one logic state of the four logic states is randomly detected, the state is taken as an initial bit, the four logic states are completely passed, the numerical value is increased by one or decreased by one, and otherwise, the counting is not carried out.

One of the states may also be set to the start state, and for a clockwise rotation (i.e. a positive rotation of the rotating member I), ABCDA is set as the first turn if state a is set to the start state. Since state a spans a relatively long area, a relatively accurate count is made of the first turn after the complete passage through the abclab state, and one turn after each passage through the CDAB state.

The more reasonable mode is: state C is set to the starting state (since the history of state C is the shortest of the four states), the first round after going through the CDABC state completely, and thereafter one round every time the DABC state is gone through.

This is also true for the rotary part I reversal, the most accurate way is also to set state C to the initial state, the first turn after a complete CBADC state, and thereafter one turn for each BADC state.

For the Hall switch which outputs low level when no magnetic force induction exists, the high level and the low level in the four logic states can be reversed.

The single chip microcomputer judges whether the rotation is positive rotation or negative rotation according to the sequence of the four states, and starts counting at the same time. Because the counting can be completed only by four states, the counting phenomenon of the rope body in the swing state is avoided. The counting device can count in positive rotation or reverse rotation, and meanwhile, the counting is accurate.

The rope skipping electronic counting device can also be additionally provided with one or more Hall switches at the positions far away from the two Hall switches, and the positions of the additionally provided Hall switches also correspond to the circular motion track positions of the magnetic steel. Thus, the logic state sequence is changed, and only the counting procedure needs to be changed. For example, a third hall switch is additionally arranged, and the third hall switch cannot simultaneously sense the magnetism of the magnetic steel with the first hall switch or the second hall switch and generate a hall effect. Five logic states thus occur:

a. the first Hall switch generates a Hall effect and outputs a low level, the second Hall switch and the third Hall switch output a high level, and the code is 011;

b. the first Hall switch and the second Hall switch generate Hall effect and output low level, the third Hall switch outputs high level, and the code is 001;

c. the second Hall switch generates a Hall effect and outputs a low level, and the first Hall switch and the third Hall switch output a high level, namely a code 101;

d. the third hall switch generates hall effect and outputs low level, the first and second hall switches output high level, code 110;

e. none of the three hall switches produces a hall effect and all output a high level, code 111.

Then, the logical state order of the forward rotation is: abcde, the inverted logic state order is: aedecb.

The main invention of the present invention is that, at a specific position, two hall switches can simultaneously sense magnetism and generate hall effect, thereby bringing a logic state in which two hall switches all generate level inversion, and being different from the prior art in which magnetic steel generally acts on one hall switch.

Claims

1. The utility model provides a rope skipping electronic counting device, is including setting up pivot subassembly, response subassembly, the counting circuit on the rope skipping handle or in, its characterized in that:

the skipping rope handle comprises a rotating part and a holding part, the rotating part is connected with the holding part through a rotating shaft assembly, and the rotating part and the holding part can rotate relatively; the rope body of the skipping rope is fixedly arranged on the rotating part, and the sensing assembly and the counting circuit are arranged in the holding part;

the rotating shaft assembly comprises a rotating shaft and a rotating block; one end of the rotating shaft is fixedly connected with the rotating part, and when the rotating part rotates, the rotating shaft synchronously rotates; the other end of the rotating shaft extends into the holding part and is movably connected with the holding part; the rotating block is fixed at the other end of the rotating shaft and is provided with a magnetic steel mounting platform;

the induction component comprises a piece of magnetic steel and two Hall switches; the magnetic steel is fixedly arranged on the magnetic steel mounting platform of the rotating block, and when the rope body of the skipping rope drives the rotating part to rotate together with the rotating shaft, the magnetic steel does circular motion; the positions of the two Hall switches correspond to the circular motion track of the magnetic steel, when the magnetic steel rotates to a specific position, the two Hall switches can both sense the magnetism of the magnetic steel, both generate Hall effect, and both output level states are overturned;

2. The electronic counting device of rope skipping of claim 1, wherein: the rotating shaft assembly further comprises a rotating bearing, the rotating shaft is fixedly connected with an inner ring of the rotating bearing, and an outer ring of the rotating bearing is connected with the holding part.

3. The electronic counting device of rope skipping of claim 1, wherein: the display screen is connected with the single chip microcomputer and displays the counting value.

4. A rope skipping electronic counting device as claimed in claim 1, 2 or 3 wherein: the Bluetooth module is connected with the single chip microcomputer and sends the count value to an external receiving device.

5. A skipping rope electronic counting device as claimed in claim 1, 2 or 3, wherein the position settings of two hall switches satisfy the following condition:

(1) when the magnetic steel moves to a position close to the first Hall switch, the first Hall switch is positioned in the effective magnetic range of the magnetic steel, and the first Hall switch is triggered to output a low level; the second Hall switch is not in the effective magnetic range of the magnetic steel, and the second Hall switch is not triggered to output a high level;

(2) when the magnetic steel moves to a position between the first Hall switch and the second Hall switch, the two Hall switches are both positioned in the effective magnetic range of the magnetic steel, and the first Hall switch continues to output low level; the second Hall switch is triggered and also outputs a low level;

6. A skipping rope electronic counting device as claimed in claim 1, 2 or 3, wherein the position settings of two hall switches satisfy the following condition:

(1) when the magnetic steel moves to a position close to the first Hall switch, the first Hall switch is positioned in the effective magnetic range of the magnetic steel, and the first Hall switch is triggered to output a high level; the second Hall switch is not in the effective magnetic range of the magnetic steel, the second Hall switch is not triggered, and a low level is output;

(2) when the magnetic steel moves to a position between the first Hall switch and the second Hall switch, the two Hall switches are both positioned in the effective magnetic range of the magnetic steel, and the first Hall switch continues to output high level; the second Hall switch is triggered and also outputs high level;

7. A rope skipping electronic counting device as claimed in claim 1, 2 or 3 wherein: two hall switches set up side by side on the coplanar of circuit board.

8. The electronic counting device of rope skipping of claim 7, wherein: the two Hall switches are arranged on two sides of the plane center line of the circuit board, and the distance between the two Hall switches is 1-12 mm.

9. A rope skipping electronic counting device as claimed in claim 1, 2 or 3 wherein: the two Hall switches are respectively arranged on the front surface and the back surface of the circuit board and are both positioned at the eccentric positions on the same side of the circuit board.

10. The electronic counting device of rope skipping of claim 9, wherein: the distance between the central lines of the two Hall switches perpendicular to the plane of the circuit board is 0-8 mm.