CN101291709A - Automatic speed control apparatus for treadmill and control method thereof - Google Patents

Abstract

The present invention provides an automatic speed control apparatus for a treadmill and the control method including a deck, a track belt of endlessly rotating on the upper and the bottom face of the deck, and a driving unit for driving unit for driving the track belt comprising: at least one front load sensor located in the front part of the track belt for measuring load from a user on the track belt; at least one rear load sensor located in the rear part of the track belt for measuring load from the user on the track belt, wherein the proceeding speed of the track belt is controlled based on the user's location or movement on the track belt by comparing the measured values from the front load sensor and the rear load sensor and catching the user's location based on the comparison therebetween, whereby the proceeding speed can be automatically controlled corresponding with the user's running speed without the user's direct operation.

Description

The auto-speed control device and the control method thereof that are used for treadmills

Technical field

The present invention relates to a kind of auto-speed control device and control method thereof that is used for treadmills (treadmill), more specifically, relate to a kind of when the user runs on treadmills or walks according to user's intention accurately automatically the run pace of band (track belt) of control need not auto-speed control device and the control method thereof that user's direct control changes the running tape speed.

Background technology

The treadmills that is commonly referred to as treadmill is widely used in indoor such as family or sports center, because it makes the user reach the effect of exercise in the time of can advancing or run in narrow space on its rotating belt.Recently because treadmills safety and advantage easily, to the demand sharp increase of treadmills, even because the winter of cold the user also can utilize treadmills at indoor exercise.

Usually, the user runs on treadmills or walks, and directly changes the speed of running or walking by finger manipulation simultaneously, dynamically to take exercise.At this on the one hand, when the user runs on running is with or walks, the pace that the user needs the control panel of direct control treadmills to run and be with control.Yet, when on treadmills, taking exercise, may be trouble with the run speed of band of finger manipulation control, and for the user on the treadmills that moves even may be dangerous, because it can break user's balance.

And, because the fixed routine (stereotypedprogram) that is stored in the treadmills memory is not to make under the situation of the health of not considering the user, so how the user must follow the fixed routine of having stored to user's situation.Therefore, although program stored has had the user need not the run advantage of speed of band of direct control when taking exercise, that the user is taken exercise is excessive or not enough for program stored.

In order to overcome these problems, auto-speed control device by the treadmill of Youngjin Chae design, Korean Patent No.2003-0069941, previous section at the control panel of treadmill provides the sensor 13,14 that is grouped into by light radiating portion and light receiver, and these sensors can detect the position at user place.When the user during at the band of running anterior this device quicken, otherwise slow down when user's this device when running the rear portion of band, so it can control the speed of running and being with automatically according to user's intention.Yet,, make the practical problem that the treadmill with sensor has the forfeiture price competitiveness because employed sensor cost is too high in the auto-speed control device of the treadmill of Youngjin Chae design.

On the other hand, owing to use the auto-speed control device of the treadmills of sensor not avoid high manufacturing cost, so attempted using ultrasonic sensor to detect user's position.That is to say that the ultrasonic sensor that is positioned at previous section adds the rotation of running with spring steps band during near ultrasonic sensor the user, on the contrary when the user when becoming far away, the rotation that it slows down and runs and be with.Yet, using ultrasonic sensor to calculate the user is coarse to the distance of this sensor, so that it can cause treadmills to quicken when the user not have close ultrasonic sensor that running is with or even the fault of slowing down when the user does not have away from ultrasonic sensor.

In addition, use treadmills that sensor carries out auto-speed control to be positioned at the controller of previous section and to attempt to make when running mobile that band quickens detecting the simple posture of running or walking or operation, can produce serious fault.When the user did not want to run or walks faster, the speed of the band of running may be accelerated.

Summary of the invention

Technical problem

The present invention has overcome these shortcomings of prior art.The purpose of this invention is to provide a kind of auto-speed control device and control method thereof that is used for treadmills, when it is run on running is with or walks the user, accurately control the velocity of rotation of band of running automatically, operate treadmills especially and change velocity of rotation and need not the user according to user's intention.

Another object of the present invention is to make the producer can be used for the auto-speed control device of the automatic control running band of treadmills with low relatively price production.

Another purpose of the present invention provides a kind of auto-speed control device of working load sensor, in the time of on detecting the previous section that the user is positioned at the band of running, the speed that this load cell detects the user becomes faster than the velocity of rotation of the band of running, thereby treadmills quickens the band of running.On the contrary, in the time of on detecting the aft section that the user is positioned at the band of running, the speed that this load cell detects the user becomes and is slower than the speed of the band of running, thereby treadmills slows down the band of running.

Another purpose of the present invention provides the stabilized speed of avoiding the speed acute variation and changes control appliance.

Another purpose of the present invention provides comfortable exercise environment, controls by the auto-speed of the band of running inertia force influence is reduced to minimum.

Another object of the present invention provides stable speed and controls environment, not will running with on the user be button on the operation control panel or the mobile signal that making the band of running quicken or slow down that is misinterpreted as that carries out of handbag promptly.

Another object of the present invention provides a kind of treadmills of avoiding possible accident when taking exercise on the treadmills that is advancing.

Another object of the present invention provides a kind of treadmills of reasonable price of the weight that can measure the user on treadmills.

Technical scheme

To achieve these goals, the invention provides a kind of running band that is used to comprise continuous rotation, be used to drive the speed control unit of treadmills of the driver element of this running band, this speed control unit comprises: load cell before at least one, the previous section that it is positioned at the band of running is used to measure run and brings load from the user up; At least one back loading sensor, the aft section that it is positioned at the band of running is used to measure run and brings load from the user up; And a control module, be used for controlling the speed (being linear velocity) that driver element is accelerated or slowed down and run and be with based on the measured value of preceding load cell and back loading sensor.

Promptly, detect by sensing lead according to the front and back part of the band of running the user that runs or walk running with on the position, can the user running with in the process of running or walking with the running or the speed of travel control speed of band of running automatically consistently of user, and need not to operate especially the speed that treadmills changes the band of running.

Herein, control module passes through according to the difference detection user's of the measured value of preceding load cell and back loading sensor position and moves, what the control running was with when the user is positioned at the previous section of the band of running speeding up, and the speed that the control running is with when the user is positioned at the aft section of the band of running slows down.

Preceding load cell is formed at least one preceding load unit, and the back loading sensor is formed at least one back loading unit.Usually, a load unit comprises one or more strain gauges that shunk or extended by external loading.That is, along with the resistance change of strain gauge when applying external loading, the voltage of strain gauge also changes.According to this voltage difference, calculate the distortion of strain gauge, therefore, consider strain gauge attached material, can measure the load that is applied on the strain gauge.Therefore, according to the user running with on the degree of deviation post, be formed the preceding load cell voltage different of load unit with the output of back loading sensor, therefore, by handling voltage signal,, can measure load such as converting analog voltage signal to digital voltage signal.

For example, when the user had skew ground to be positioned to run the previous section of band, the situation when being positioned at the mid portion of the band of running or aft section with the user was compared, and the measured value F1 at preceding load cell place becomes bigger.That is to say, according to the variation of measured value F1 tendency, control module can detect the user running with on real time position.Therefore, under the situation that the absolute value of the measured value F1 at preceding load cell place becomes bigger, owing to will detect the previous section that the user is positioned at the band of running, control module command driven unit quickens the band of running.Similarly, when the user had skew ground to be positioned to run the aft section of band, the situation when being positioned at the mid portion of the band of running or previous section with the user was compared, and the measured value F2 at back loading sensor place becomes bigger.Therefore, under the situation that the absolute value of the measured value F2 at back loading sensor place becomes bigger, owing to will detect the aft section that the user is positioned at the band of running, control module command driven unit slows down the band of running.

On the contrary, preceding load cell and back loading sensor can be formed at least one strain gauge.More specifically, preceding load cell is formed a pair of preceding strain gauge that is installed in the previous section of the band of running, the back loading sensor also is formed a pair of back strain gauge that is installed in the aft section of the band of running, and wherein preceding strain gauge and back strain gauge are formed a complete wheatstone bridge circuits.Alternatively, preceding load cell can be formed a preceding strain gauge that is installed in the previous section of the band of running, the back loading sensor also can be formed a back strain gauge that is installed in the aft section of the band of running, and wherein preceding strain gauge and back strain gauge and other two dummy resistors are formed a wheatstone bridge circuits.

Be formed at load cell under the situation of a pair of strain gauge, wish will be a pair of before strain gauge be installed in the both sides of the band previous section of running and a pair of back strain gauge be installed in the both sides of the band aft section of running, on the left of can compensating to automatically thus or to the skew on right side.And, owing to the resistance variations of 4 strain gauges can be represented by a bridge voltage, thus can only use a relatively costly amplifier accurately to detect user's real time position, thus reduce the cost of the auto-speed control device that is used for treadmills.

Herein, the preceding strain gauge in the wheatstone bridge circuits toward each other, and back strain gauge wherein is also toward each other.In the case, bridge voltage Δ V can represent with following equation 1.

Equation 1

$\mathrm{\ΔV}=V\frac{R1-R2}{R1+R2}$

Therefore, when the user has skew ground to be positioned to run the previous section of band before the resistance R 1 of strain gauge become big, and the resistance R 2 of strain gauge becomes greatly after when the user has skew ground to be positioned at the aft section of the band of running.Therefore, the symbol of bridge voltage Δ V and absolute value detect or catch user's position (that is, the user is displaced to previous section or the much degree of aft section on running is with) in real time.According to the user's who is detected real time position, need not user's operation control panel, can realize according to the user running with on the position control the device of the speed of the band of running automatically.Herein, effectively, the resistance R 1 of all strain gauges, R2 are all identical mutually, because no matter when the user has skew ground to be positioned at the previous section or the aft section of the band of running, the symbol of bridge voltage Δ V can change, thereby easily detects user's position.

And when the user wished to run much faster on running is with, the user had skew ground to be positioned at the previous section of the band of running.Herein and since the absolute value of bridge voltage Δ V and user running with on the ratio that shifts into change, so the absolute value of control module and bridge voltage Δ V is controlled acceleration or degree of deceleration that running is with pro rata.

For the band that prevents to run because according to user's position or move and controlled so sensitively and controlled mistakenly, preferably, when the user is positioned at the presetting range of the band mid portion of running, do not change the speed of band of running, and have only when the user have skew ground to be positioned at outside this presetting range or running with on just change the speed of the band of running when moving its position.

And preceding load cell and back loading sensor are installed in right side and left side respectively, thereby even the user have running with on skew ground is arranged in the left side or the right side tendency of running or walking, also can easily detect user's skew forward or backward.

After just beginning on running is with to take exercise, for detect the user running with on the position aspect tendency, more preferably do not changed the speed of the band of running the running tape running scheduled time, so that the bridge voltage Δ V in this scheduled time is averaged, and this average electrical bridge voltage is stored as with reference to bridge voltage Δ Vref.This be intended to when considering that the user takes exercise running with on the situation of custom optimum position under the run speed of band of control.For example, when the user have running with on during slightly by the previous section walking of the band of running or the tendency of running, even the user a little a bit skew is positioned at the previous section of the band of running when taking exercise, owing to reflected user's tendency with reference to bridge voltage Δ Vref, unless the user further is offset to the previous section of running band, otherwise control module is not controlled the band acceleration of running.

Before load cell be installed into the framework of supporting platen with the back loading sensor and contact, this platen is being run between the upper surface of being with and lower surface.Herein, platen also supports load or the impact from the user.That is, preceding load cell and back loading sensor can be installed in respectively between framework and the platen.In addition, calculate, can measure load by measurement deflection (deflection) to the framework of supporting platen.

On the other hand, the invention provides a kind of running band that is used to comprise continuous rotation, be used to drive the method for control speed of treadmills of the driver element of this running band, this method for control speed comprises: measure at least one previous section of the band of running and the band of running at least one aft section because the step of the load that produces with last user's weight of running; To the measured value of the aft section of the previous section of the band of running in the preset time and the band of running average in case identify the user running with on the step of position tendency; The measured value of the aft section by the previous section of the band of relatively running and the band of running detect the user running with on the step of position; And when detecting the user and be positioned at the previous section of the band of running control run speeding up of band and when detecting the user and be positioned at the aft section of the band of running the control step that the speed of band slows down of running.

Similarly, measure load by strain gauge before a pair of and a pair of back strain gauge according to user's position, these strain gauges have identical resistance mutually, wherein should constitute a Wheatstone bridge to the back strain gauge to preceding strain gauge and this, in this Wheatstone bridge before strain gauge toward each other and the back strain gauge toward each other.Therefore, control module is according to the speed of running and being with in symbol and the absolute value control of the bridge voltage Δ V between two points between preceding strain gauge and the back strain gauge.

On the other hand, the invention provides a kind of speed control unit that is used for treadmills, this treadmills has platen, the moving running band of not stall and be used to drive the driver element that this runnings is with on the upper surface of platen and lower surface, this speed control unit comprises: load cell and before at least one of the previous section of the band of running at least one back loading sensor of the aft section of the band of running, its be used to detect the user running with on the position; Thus by the measured value of these sensors relatively detect the user running with on the position, and when the user running with on add the speed of running with spring steps band when moving forward, when the user running with on the speed that slows down and run and be with when mobile backward.

That is to say, based on the user running with on, when it wants to run much faster, move forward and the custom that when it wants to run slowlyer, moves backward, by will compare mutually from the measured value of load cell and detect the user running with on real time position, what control was run and is with when the user moves forward speeding up, and the speed of control running band slows down when the user is mobile backward.

This control is intended to realize want to run much faster or the speed that the real-time intention control of running is slowlyer run and is with according to the user.And, the user in the exercise process, want to change running with on the situation of stop place under, even the run speed of band of the previous section of band of running is not accelerated yet because the user has skew ground being positioned at, this control itself suitably reflected the user only want to change running with on the intention of stop place.

Herein, load cell and described back loading sensor all were not limited to the device of independent measurement load before all were described, but comprised by the sensor with preceding load cell and the incompatible sensing lead of back loading sensor groups.

And, respectively to averaging from the measured value of preceding load cell and back loading sensor in the unit interval, next poor by last mean value being deducted current mean value then according to Time Calculation.After absolute value of this difference keeps greater than pre-set criteria A, the absolute value of this difference becomes under the situation less than pre-set criteria A, think the user finished forward or backward mobile and running with on preset range in stop (stay).At this moment, under the situation that the speed of running band is just being accelerated, the instantaneous speed that slows down and run and be with, on the contrary, and under the situation that the speed that running is with is just being slowed down, the instantaneous speed that adds the running with spring steps band.Herein, pre-set criteria can be based on the preset value Δ Fset of sensing lead, perhaps can be based on the preset value Δ Vset of the bridge voltage in the wheatstone bridge circuits, perhaps can be can be from the next preset value of they conversions.In addition, this pre-set criteria can preset before taking exercise or at exercise period.

That is to say, the user finish running with on that time of moving, because the user is owing to inertia force trends towards continuing to move on direction before, by applying instantaneous opposite acceleration or deceleration to the user, the user can not be subjected to owing to before running with on move the unconscious skew that causes.

By observing, realize the detection of moving in real time to the user by deduct poor that average measurement value in the current unit interval obtains from last measured value.Particularly, in the unit interval Δ t that the center of gravity that can detect the user moves, continuous by the shorter time (less than Δ t) to averaging in real time from preceding and the measured value back loading sensor, and by will be the preceding mean value deduct after mean value calculate in real time poor, therefore, if this difference becomes greater than pre-set criteria A, then recognize the user and begin to move, become less than pre-set criteria A up to this difference.

On the other hand, do not cause the impact possible in order to realize identical purpose to the user, after the absolute value of above-mentioned difference keeps greater than pre-set criteria A, the absolute value of this difference becomes under the situation less than pre-set criteria A, think the user finished forward or backward move and running with on preset range in stop, therefore, at this moment, under the situation that the speed of the band of running is just being accelerated, the acceleration degree that instantaneous reduction is run and is with, on the contrary, under the situation that the speed that running is with is just being slowed down, the degree of deceleration that instantaneous reduction is run and is with.

The present invention also provides a kind of speed control unit that is used for treadmills, this treadmills comprises platen, the moving running band of not stall and one are used to drive the driver element that this runnings is with on the upper surface of platen and lower surface, this speed control unit comprises: be arranged on the acceleration region of the previous section of the band of running, be used for adding the speed of running with spring steps band when the user is positioned at this acceleration region; Be arranged on the deceleration zone of the aft section of the band of running, be used for the speed that when the user is positioned at this deceleration zone, slows down and run and be with; And be positioned at load cell before at least one of previous section of the band of running and be positioned at least one back loading sensor of the aft section of the band of running, its be used to detect the user running with on the position, wherein by relatively detecting user's position from the measured value of preceding load cell and back loading sensor, therefore the band of running when the user is positioned at acceleration region quickens, and the band of running when the user is positioned at the deceleration zone slows down.

By be provided with by producer or user run with on the acceleration region and the zone of slowing down, and need not be by user's finger manipulation, the user can make the band of running quicken by moving on the acceleration region, by moving to the band of running is slowed down.

Herein,, also comprise a constant speed region that is arranged on the mid portion of the band of running, be used for when the user is positioned at this constant speed region, keeping the speed of running and being with for stable constant speed environment is provided to the user.Promptly, band is controlled mistakenly owing to so responsive control for fear of running, preferably, when the user is positioned at the presetting range of mid portion of the band of running, do not change the speed of the band of running, and only when the user has skew ground to be positioned at outside this presetting range, change the speed of the band of running.

And equally effectively, acceleration region and deceleration zone are divided into a plurality of zones respectively, if therefore the user is positioned on the zoning of acceleration region, the acceleration degree differently is provided with by these zonings.Similarly, if the user is positioned on the zoning in the zone of slowing down, degree of deceleration differently is provided with by these zonings.Therefore, be with along with the user has to be positioned to skew to run more, the user can make the speed of the band of running more promptly reach target velocity.Herein, the zoning is not limited to form the zone by limiting a zone with clear and definite boundary.But the degrees of offset that the implication of zoning comprises acceleration degree and degree of deceleration and user is conversion continuously pro rata, although user's degrees of offset and not according to any boundary conversion between them.Herein, skew is represented as load difference Δ F or bridge voltage Δ V.

Usually, no matter the user running with on the position, consideration running with on user's intention, if the user moves forward, think that then the user has the intention of accelerating its speed of running, similarly, if the user moves backward, think that then the user has the intention of its speed of running that slows down.Therefore, even the user is not positioned on the acceleration region, when moving forward, the user also wishes to make the band acceleration of running when detecting in the process that moves forward the user on running is with, similarly, on being with, running wish to make when mobile backward the band of running to slow down when detecting the user in the process that moves backward the user.

And, respectively to averaging from the measured value of preceding load cell and back loading sensor in the unit interval, next poor by deduct current mean value from last mean value then according to Time Calculation.After absolute value of this difference keeps greater than pre-set criteria A, the absolute value of this difference becomes under the situation less than pre-set criteria A, think the user finished forward or backward mobile and running with on preset range in stop.At this moment, under the situation that the speed of running band is just being accelerated, the instantaneous speed that slows down and run and be with, on the contrary, and under the situation that the speed that running is with is just being slowed down, the instantaneous speed that adds the running with spring steps band.

Thereafter, if the user rest on run with on acceleration region on, the speed of the band of running is accelerated, if the user rest on run with on constant speed region on, the speed of band of running is held, if the user rest on run with on the deceleration zone on, the speed of the band of running is slowed down.

Herein, when user's operation control panel made that arbitrary signal is imported into control panel, speed and the situation of gradient when this signal is transfused to of being with kept a scheduled time with running.By the configuration above-mentioned functions, though the user removes operation control panel without any necessity in the walking or the process of running, but want to change under the situation of the exercise condition such as the gradient of the process of running (runningcourse) or the band of running the user, can fundamentally avoid the unbalanced possibility of user.Enough user's operation control panel of the scheduled time of the exercise condition of band owing to keep to run, after the signal input termination of being undertaken by control panel, the exercise condition of treadmills remained unchanged in the time of 1 second or 2 seconds.

Only when the difference from the measured value of preceding and back loading sensor surpasses pre-set criteria A, realize the running acceleration or the deceleration of band, thus the user running with on the slight shift of position can not cause the quickening of running counter to user's intention or the control of the running tape speed that slows down.

Herein, but preceding load cell and back loading sensor are formed the load unit of the load of its position separately of independent measurement respectively, thereby catch user's position and move according to the difference of measured value.At this, be applied to load on the platen in order to measure the user, preceding load cell and back loading sensor are installed in platen and support between the framework of this platen.

Herein, when running with on the user run a good foot in the pace of the band of running and when therefore being positioned at its previous section, bridge voltage Δ V also with the user running with on skew change pro rata.Therefore, the control module speed that control is run and is with according to bridge voltage Δ V.Based on the variation of the average electrical bridge voltage Δ Vavg in the constant time Δ t, can be captured in current and the just variation of user position between the time before this.

And, preceding load cell and back loading sensor all are installed in left side and right side respectively, thus the tendency that the compensation user has skew ground to take exercise on left direction or right direction, and the position of catching the user.

Therefore, under situation about not considering with reference to bridge voltage Δ Vref, the symbol decision driver element by average electrical bridge voltage Δ Vavg should make the band of running quicken still to slow down, the degree of quickening and slowing down by the absolute value decision of average electrical bridge voltage Δ Vavg.

Under situation about considering with reference to bridge voltage Δ Vref, should make the band of running quicken still to slow down by average electrical bridge voltage Δ Vavg with reference to the symbol of the difference between bridge voltage Δ Vref decision driver element, by average electrical bridge voltage Δ Vavg and the degree quickening and slow down with reference to the absolute value decision of the difference between the bridge voltage Δ Vref.

Because preceding load cell and back loading sensor measurement be via the platen load transmitted and outside therefore not being exposed to, so these sensors can be reliable for a long time and sensing lead stably.

On the other hand, the present invention also provides a kind of method for control speed that is used for treadmills, this treadmills comprises platen, on the upper surface of platen and lower surface the moving running band of not stall and the driver element that is used to drive this runnings band, this method for control speed comprises: measure at least one previous section of the band of running and the position of at least one aft section be with of running via the step of platen from user's load transmitted Δ F, Δ V; The step that moves that the sensing lead of the position of at least one previous section of being with by relatively running and at least one aft section of running band is caught the user; Control is run when the user moves forward, and band quickens or control the step that the band of running slows down when the user is mobile backward.

Herein, also comprise: the load from the user of the measurement of being with previous section and aft section to running in the scheduled time is averaged so that catch the step of the user's who is inclined to according to the user position; The zone that comprises user's mean place in the given time is set to constant speed region, is set to acceleration region and the step in the zone that is set in the zone of this constant speed region back to slow down in this constant speed region region in front.

By the sensing lead F1 of previous section in the unit interval Δ t or the sensing lead F2 or the R2 of R1 and aft section are averaged, and be that the symbol of the difference between A or Δ Fset or the Δ Vset is determined that the user moves forward when becoming greater than pre-set criteria or moved backward in this mean value and pre-set criteria, realize catching user's the step that moves.

After band acceleration or deceleration are run in control, when the user finish move forward and running with on when stopping instantaneous reduction run band the acceleration degree or when the user finish running with on mobile backward the time instantaneous reduction moment of the degree of deceleration be with (instanthesitant) step of hesitating of running, thereby prevent that the user is owing to its inertia is offset.

Thereafter, if the user rest on run with on acceleration region on, add the speed of running with spring steps band, if the user rest on run with on constant speed region on, keep the to run speed of band, if the user rest on run with on the deceleration zone on, the speed of band of running slows down.Therefore, the user can be prevented, and the pace of the band of running can be controlled continuously owing to its inertia is offset.

Herein, during when user's operation control panel and from control panel input arbitrary signal, the exercise condition of treadmills when this signal is transfused to kept several seconds, thereby can not cause user's disequilibrium on running is with.

And the present invention also comprises step: when when the user is positioned at part after the band of running leans on very much the band of running being stopped according to relatively detecting of the measured value of the aft section of the measured value of the previous section of the band of running and the band of running.This is shifted by excessive degree skew ground is arranged as the beginner that takes exercise onto the rear face of the band of running is time-sharing automatic to stop the running of advancing of running and being with on treadmills, guarantee user's safety.

And, the invention provides a kind of method for control speed that is used for treadmills, this treadmills comprises platen, on the upper surface of platen and lower surface the moving running band of not stall and the driver element that is used to drive this runnings band, this method for control speed comprises: measure at least one previous section of the band of running and the position of at least one aft section be with of running via the step of platen from user's load transmitted; The sensing lead of the position of at least one aft section by at least one previous section of the band of relatively running and the band of running detects the step of moving of user and/or user's position; The step that the band of running is stopped when the variation of time is in presetting range when sensing lead.

That is to say, when via the platen load transmitted when changing because think the user to leave treadmills the band of running is stopped, the band of running is forced to stop, thereby avoids the user to be injured when setting foot on treadmills unintentionally.

Herein, whether surpass the load that preset value detects from the user by variation whether any variation is arranged from the measured value of load cell.Because preset value is to be provided with under the situation of considering measure error, so this preset value is far smaller than to catching user's pre-set criteria A or Δ Fset or the Δ Vset that is provided with that move.

On the other hand, the invention provides a kind of treadmills that can measure user's weight, this treadmills comprises: framework; Be placed on the platen on the framework; The moving running band of not stall on the upper surface of platen and lower surface; Wheatstone bridge circuits, it comprises a pair of being installed at preceding strain gauge on the front part between framework and the platen and a pair of back strain gauge on the back member between framework and the platen of being installed in the band aft section of running of the band previous section of running, wherein should before strain gauge and back strain gauge respectively toward each other; Be used to instruct stand thereon weighing positions indicator of user, the location, center independent (separately) of strain gauge and back strain gauge before it departs from; And the weight indicator that shows user's weight according to wheatstone bridge circuits.Though this treadmills does not dispose weighing-appliance, if the user stand in run with on weighing positions, the user just can weigh up its weight.By express to run with on weighing positions and the equation of the relation between the bridge voltage Δ V method that can obtain to measure user's weight.

Simultaneously, the present invention also provides a kind of speed control unit that has the moving running band of not stall and be used to drive the treadmills of the driver element that this runnings is with that is used to comprise, this speed control unit comprises: being positioned at load cell before the band previous section of running a plurality of, be used to measure from running with on user's load; Being positioned at a plurality of back loading sensors of the band aft section of running, be used to measure from running with on user's load; And control module, be used for the speed of accelerating or slowing down and run and be with based on the measured value control driver element of preceding load cell and back loading sensor.

Even the user is the inoperation control panel in the exercise process, by according to the position of detecting the user from the measured value of load cell and by the control driver element pace of band of running of accelerating or slow down, also can according to the user run or the speed of travel is controlled the pace of the band of running automatically.

When the value of measuring from top load cell was higher, control module control driver element improved the degree of quickening, and similarly, when from the value of rearmost load cell when higher, control module control driver element improves the degree of slowing down.This be because when the user has skew ground to be positioned to run the previous section of band the measured value sensitiveness higher (sensitively higher) of top load cell, also because the measured value sensitiveness of rearmost load cell is higher when the user has skew ground to be positioned at the aft section that running is with.

Preceding load cell and back loading sensor can be respectively at least one load units.And preceding load cell and back loading sensor can be respectively strain gauge and at least one pair of back strain gauges before at least one pair of, and wherein a pair of preceding strain gauge and a pair of back strain gauge constitute a Wheatstone bridge respectively.

Be formed at each load cell under the situation of a pair of strain gauge, a preceding strain gauge of load cell before each is installed in the right front face portion of the band of running, another preceding strain gauge of load cell before each is installed in the left front face portion of the band of running, in addition, strain gauge behind of each back loading sensor is installed in the right back face portion of the band of running, another back strain gauge of each back loading sensor is installed in the left back face portion of the band of running, strain gauge and a pair of back strain gauge constitute a Wheatstone bridge respectively before wherein a pair of, before making strain gauge can be in wheatstone bridge circuits toward each other and the back strain gauge can be in wheatstone bridge circuits toward each other.Therefore, by observing the bridge voltage Δ V of each Wheatstone bridge, can detect user's position and move.

Have resistance R 1 and the back strain gauge has the structure of resistance R 2 for this preceding strain gauge, bridge voltage Δ V is represented as above-mentioned equation 1.

Therefore, foregoing circuit have 3 Wheatstone bridges and wherein each Wheatstone bridge have a pair of before strain gauge--these preceding strain gauges have resistance R 11, R12, R13--and a pair of back strain gauge successively from top beginning--these back strain gauges have under the situation of resistance R o--, when the voltage on being applied to Wheatstone bridge was V, each bridge voltage Δ V1, Δ V2, Δ V3 were represented as following equation.Herein, because being illustrated as, the back strain gauge is formed on identical position, so the resistance of strain gauge is represented as identical resistance R o after 6.

Equation 2

$\mathrm{\ΔV}1=V\frac{\mathrm{Ro}-R11}{\mathrm{Ro}+R11}$

Equation 3

$\mathrm{\ΔV}2=V\frac{\mathrm{Ro}-R12}{\mathrm{Ro}+R12}$

Equation 4

$\mathrm{\ΔV}3=V\frac{\mathrm{Ro}-R13}{\mathrm{Ro}+R13}$

Therefore, because when the user has the previous section that is positioned to skew the band of running more, the resistance R 11 of the top preceding strain gauge before above-mentioned in the strain gauge becomes bigger, and because when the user has the aft section that is positioned to skew the band of running more, the resistance R 13 of strain gauge becomes bigger before rearmost before above-mentioned in the strain gauge, thus by bridge voltage Δ V1 to the absolute value of Δ V3 and symbol can be easily and accurately catch user's position and move.By this structure, though the user not direct control be usually located at the control panel in the band the place ahead of running, also can adjust the pace of the band of running automatically by the control driver element.Herein, because when strain gauge Ro, R11, R12 and R13 have identical resistance, the symbol of bridge voltage Δ V is according to the position transition of user in running band previous section or aft section, so consider the easy of speed control, wish that strain gauge Ro, R11, R12 and R13 also have identical resistance.

And, consider that the user has the previous section that is positioned to skew the band of running more when running the pace of being with when the user runs a good foot, and bridge voltage Δ V1 to Δ V3 also according to user's offset variation, so control module and bridge voltage Δ V1 control the degree of quickening or slowing down pro rata to the absolute value of Δ V3.

In order to prevent because according to user's position or move and carry out so responsive control cause the running pace of band and controlled mistakenly, preferably, when the user is positioned at the presetting range of the band mid portion of running, do not change the speed of band of running, but have only the speed that when the user has skew ground to be positioned at outside this presetting range, just changes the band of running.

And, even in order when some strain gauge breaks down, also to obtain reliable control, by from bridge voltage Δ V1, Δ V2, Δ V3 ... the bridge voltage that middle eliminating is minimum and maximum, can be based on the run speed of band of the symbol of remaining bridge voltage and absolute value control.

Herein, since can measure in real time each bridge voltage Δ V1, Δ V2, Δ V3 ..., rather than the speed that only control is run and is with based on average electrical bridge voltage Δ Vavg, so by the speed that Δ V1 or Δ V3 based on rearmost preceding strain gauge in strain gauge before top in the strain gauge before comprising and the preceding strain gauge control the band of running, the pace that can promptly run and be with according to user's mobile control.Therefore, with only have a pair of before strain gauge compare with the device of a pair of back strain gauge, this have many devices to preceding strain gauge and back strain gauge can be with the fast reaction time the run pace of band of more accurate and control promptly.

Before load cell be installed into the framework of supporting platen with the back loading sensor and contact, described platen is being run between the upper surface of being with and lower surface.Herein, platen also supports load or the impact from the user.That is, each in preceding load cell and the back loading sensor can be installed between framework and the platen.In addition, the material behavior of the framework by considering supporting platen and calculating from the measurement deflection of framework can be measured load.

On the other hand, the invention provides the method for control speed of treadmills that a kind ofly is used to comprise the moving running band of not stall, is used to drive the driver element of this runnings band, this method for control speed comprises: measure a plurality of different previous section of the band of running and the band of running an aft section because the step of the load that running causes with last user's weight; The measured value of the aft section by these previous sections of the band of relatively running and the band of running detect the user running with on the step of position; And when detecting the user and be positioned at the previous section of the band of running control run speeding up of band and when detecting the user and be positioned at the aft section of the band of running the control step that the speed be with slows down of running.

At this moment, by based on average measurement value control driver element,,, also can consistently control pace with user's intention owing to compensated this measurement mistake with mean value even certain (some) load cell produces any measurement mistake.

Beneficial effect

As mentioned above, the invention provides a kind of running band that is used to comprise continuous rotation, be used to drive the speed control unit of treadmills of the driver element of this running band, this speed control unit comprises: being positioned at load cell before at least one of previous section of the band of running, be used to measure run with on user's weight; Being positioned at least one back loading sensor of the aft section of the band of running, be used to measure run with on user's weight; And control module, be used for the speed of accelerating or slowing down and run and be with based on the measured value control driver element of preceding load cell and back loading sensor.

And preceding load cell of the present invention is formed at least one preceding strain gauge, and the back loading sensor is formed strain gauge before at least one back, and therefore the auto-speed control device that is used for treadmills of the present invention can obtain price competitiveness.

The present invention can have better reliability, because it has eliminated the fault that causes owing to the signal that simple gesture is misinterpreted as acceleration or slow down by measuring the mechanism that the POL (load point) of user on runway detects user's position.

The invention provides a kind of stabilized speed change control apparatus of avoiding the speed acute variation.

The present invention also provides comfortable exercise environment, controls by the auto-speed of the band of running inertia force influence is reduced to minimum.

The invention provides stable speed and control environment, not can with running with on the user for the button on the operation control panel or catch the mobile signal that making the band of running quicken or slow down that is misinterpreted as that handbag carries out.

Description of drawings

Therefore, when in conjunction with reference to the following drawings, detailed description of the preferred embodiments investigates when of the present invention, will understand the present invention best by consideration with reference to these accompanying drawings, wherein identical reference numerals refers to identical structure in all different accompanying drawings, wherein:

Fig. 1 shows the figure according to the structure of the treadmills of first embodiment.

Fig. 2 is the figure of diagram according to the structure of the treadmills of other embodiment.

Fig. 3 be Fig. 1 with Fig. 2 in the runway part separate stereogram.

Fig. 4 is the enlarged drawing of the part ' A ' among diagram Fig. 3.

Fig. 5 is the separation stereogram of the load cell module among Fig. 4.

Fig. 6 is runway part among a diagram Fig. 1 and Fig. 2 cutaway view (cross sectional view) under the situation of the band of not running, that see from downside (low side).

Fig. 7 is the enlarged drawing that the part ' B ' among Fig. 6 is shown.

Fig. 8 is to use the circuit diagram of the load cell among Fig. 1.

Fig. 9 is the fundamental diagram of Fig. 1.

Figure 10 is the figure in deceleration zone of acceleration region, constant speed region and the segmentation of the segmentation on the runway of diagram Fig. 2.

Figure 11 is the groundwork schematic diagram of Fig. 2.

Figure 12 be diagram and user running with on from constant speed region to acceleration region and from the figure of acceleration region to the corresponding velocity variations of motion of constant speed region.

Figure 13 be diagram and user running with on from constant speed region to slowing down zone and from the figure of zone that slow down to the corresponding velocity variations of motion of constant speed region.

Figure 14 be diagram and user running with on from constant speed region to acceleration region and from the figure of acceleration region to corresponding another velocity variations of motion of constant speed region.

Figure 15 be diagram and user running with on from constant speed region to slowing down zone and from the figure of zone that slow down to corresponding another velocity variations of motion of constant speed region.

Figure 16 is the cutaway view that illustrates according to the structure of the treadmills of the 3rd embodiment of the present invention.

Figure 17 is the separation stereogram of the runway part among diagram Figure 16.

Figure 18 is the enlarged drawing of the part ' A ' among Figure 17.

Figure 19 is runway part among a diagram Figure 16 stereogram under the situation of the band of not running, that see from downside.

Figure 20 is the figure of the distribution of the load cell on the runway band that illustrates among Figure 15.

Figure 21 is the separation stereogram of the preceding load cell module among Figure 19.

Figure 22 is the enlarged drawing that the part that has the back loading sensor assembly ' B ' among Figure 19 is shown.

Figure 23 is the enlarged drawing that the part ' C ' that has preceding load cell module among Figure 19 is shown.

Figure 24 is to use the control circuit of the load cell among Figure 16.

Figure 25 is the figure of the operation principle of diagram Figure 16.

The specific embodiment

According to below in conjunction with the accompanying drawing detailed description of the present invention, above-mentioned and other purpose, feature, aspect and advantage of the present invention will become more obvious.When description is of the present invention, omit to launching the detailed description of (laid-out) function or structure, so that main points of the present invention are clear.

Shown in Fig. 1 and Fig. 3 to 9, the treadmills 100 that is used for its auto-speed control device according to disposing of first embodiment of the invention comprises: runway unit 110 is used to make run and is with 111 constantly to advance, so that provide the exercise environment for the user; Control panel unit 120, it shows the speed of service and the calorie that is consumed in running with 111 the place aheads; Load cell module 190, be used to measure run with 111 previous sections and run with 111 aft section from user's load transmitted; And the control module (not shown), be used for controlling the band of running and quicken or deceleration based on the value that load cell module 190 is measured.

Runway unit 110 comprises: be with 111 for the user provides the running of the continuous rotation of the environment of running or walk; A pair of roller 112 is used for being with 111 end guiding running in running; Driver element 112a is used for drive roller 120 and is with 111 to rotate so that make to run; Platen (deck) 113, it is formed in running with 111 upper surface and the flat board between the lower surface, so that supporting is from user's weight or impact; Framework 114, it all contacts with the right-hand member side with the left end side of platen 113, thus supporting platen 113; A plurality of yielding rubbers 115, it is installed between platen 113 and the framework 114, impacts so that absorb; Trim 115, it is made by metal material, outside the both sides of cover framework 114 make that framework 114 is not exposed to; Backing roll 117 is used to support the previous section of treadmills 100; Support member 118 is used to support the aft section of treadmills 100.

As shown in Figure 3, run and be with 111 to be installed to be constantly rotation between above-mentioned roller 112, platen 113 is installed in runs with between 111 the upper surface and lower surface.Here, the both end sides of platen 113 all be placed on from framework 114 outstanding ' ' on the shape member 114a, be inserted in yielding rubber 115 between platen member 114a and the platen 113 and weakened impact load to user's knee, thereby protection user's knee.

Control panel unit 120 comprises: control panel 121, and calories that be used to indicate current pace, run row distance, consumed etc., and it has a plurality of load buttons are used for order and run or walk or be used to control the inclination of running with 111; A pair of handlebar 122, stretch out its bottom from control panel 121, for the user when taking exercise or grasping in case of emergency; Connector 124, it is 110 extensions from the runway unit, make control panel 121 can be positioned at the height of user's waist; Parallel member, it connects two connectors 124 to strengthen the lateral stiffness of connector 124.

Load cell module 190 is installed in the previous section and the aft section of running with 111 respectively, so that measure via platen 113 from user's load transmitted.Load cell module 190 comprises: the middleware 191 that crosses out from framework 114; Be fixed to the bool 192 on each middleware 191, be used for by load suitably crooked via platen 113; Attached strain gauge 193a, 193b, 194a and 194b on each bottom surface of each bool 192, these strain gauges are out of shape according to the distortion of bool 192 in their elastic range thus.

Herein, when middleware 191 and bool 192 were folded, these members 191,192 were by combining securely such as the through hole 191a of bolt, the fastener of 192a, thus these members 191,192 will be mutually bulk deformation together.The hole 192b that the bool 192 other holes with yielding rubber 115 are aimed at is used for bool 192 and yielding rubber 115 are combined.

As shown in Figure 8, control module comprises Wheatstone bridge, and this Wheatstone bridge comprises: a pair of preceding strain gauge 194a, 194b with resistance R 2 is used to measure the load of running with 111 previous sections; And a pair of back strain gauge 193a, 193b with resistance R 1, be used to measure the load of running with 111 aft section, wherein should be toward each other to preceding strain gauge 194a, 194b, this is to back strain gauge 193a, 193b toward each other.And control module comprises: amplifier is used to be amplified in the bridge voltage Δ V between 1: 181 and 1: 182 between preceding strain gauge 194a, 194b and back strain gauge 193a, the 193b; Analogue-to-digital converters are used for converting the analog electrical bridge voltage after amplifying to the digitlization bridge voltage and handle for carrying out signal.That is, control module control driver element 112a accelerates or the rotation of the roller 112 that slows down, thereby control is run with 111 pace.

At this moment, when being applied to voltage V on the wheatstone bridge circuits, the bridge voltage Δ V between 1: 181 and 1: 182 is represented as above-mentioned equation 1.

Therefore, when the user has skew ground to be in to run with 111 previous section or aft section, this strain gauge resistance the when resistance of the strain gauge at place, position is not offset greater than the user when being installed in the user skew being arranged.Therefore, the symbol of bridge voltage Δ V skew is arranged is in the previous section or the aft section transformation of running with 111 according to the user.In addition, when the user had more skew ground be in to run with 111 arbitrary portion, the numerical value of bridge voltage Δ V (being absolute value) can become bigger, therefore, determines acceleration degree or degree of deceleration pro rata with the numerical value of bridge voltage Δ V.

Herein, preceding strain gauge 194a, 194b with back strain gauge 193a, 193b is shaped as has identical resistance.But, all be acceptable such as any resistance of 120 Ω or 350 Ω.

Below, with reference to Fig. 9, the operation principle according to the auto-speed control device of first embodiment of the present invention is described.

At first, the user's deviation range of allowing that does not change the pace of the band of running is stored and is preset in the control module with the form of the bridge voltage Δ Vset (being initial preset voltage) of conversion.

Thereafter, when the user set foot on treadmills and by the start button on the control panel 121 with walking on running is with or when running, in about 1 minute time, do not change the speed of running automatically with 111, load cell module 190 measure run with 111 previous sections and run with 111 aft section via the load of platen 113 from the user, can grasp the tendency that the user likes the part after running is still leaned on slightly with 111 forward slightly parts to take exercise thus.Particularly, in about one minute time after just beginning to take exercise, the average voltage of the measuring bridge voltage Δ V of Wheatstone bridge shown in Figure 8 is stored as with reference to bridge voltage Δ Vref, and whether this changes the standard of running with 111 pace with reference to bridge voltage.

Thereafter, when user run much faster and become skew ground is positioned at when running with 111 previous section, along with the bool 192 in its previous section is subjected to more crooked greatly than the bool in its aft section, the resistance R 2 of preceding strain gauge 194a, 194b becomes bigger, yet, because bool 192 bendings in the band aft section of running are very little, resistance R 1 variation of strain gauge 193a, 193b is very little after the institute.Therefore, according to equation 1, the symbol of bridge voltage Δ V becomes negative (-), and is with on 111 along with the user has to be in to skew to run more, and the absolute value of bridge voltage Δ V becomes bigger.At this moment, when the absolute value of (Δ V-Δ Vref) surpasses initial preset voltage Δ Vset, because the degree that the user is offset forward surpasses the degree that initially presets, even the user does not import the signal of any acceleration, control module also can be controlled the pace of running with 111 accelerates its absolute value with (Δ V-Δ Vref) pro rata.

Similarly, when the user runs slowlyer and have skew ground to be positioned to run with 111 aft section, along with the bool 192 in its aft section is subjected to more crooked greatly than the bool in its previous section, the resistance R 1 of back strain gauge 193a, 193b becomes bigger, yet, because bool 192 bendings in the band aft section of running are very little, resistance R 2 variations of strain gauge 194a, 194b are very little before the institute.Therefore, according to equation 1, the symbol of bridge voltage Δ V becomes just (+), and is with on 111 along with the user has to be in to skew to run more, and the absolute value of bridge voltage Δ V becomes bigger.At this moment, when the absolute value of (Δ V-Δ Vref) surpasses initial preset voltage Δ Vset, because the degree that the user is offset backward surpasses the degree that initially presets, even the user does not import the signal of any deceleration, control module also can be controlled the pace of running with 111 slows down its absolute value with (Δ V-Δ Vref) pro rata.

Herein, the pace of running band is quickening or slows down by the symbol decision of (Δ V-Δ Vref).

This auto-speed is controlled at the user and stops to take exercise lasting always before.

The invention embodiment

Hereinafter, second embodiment of the present invention will be described.

Shown in Fig. 2 to 8 and Figure 10 to 15, the treadmills 100 that is used for its auto-speed control device according to being equipped with of second embodiment of the invention comprises: runway unit 110 is used to make run and is with 111 constantly to advance, so that provide the exercise environment for the user; Control panel unit 120, it shows the speed of service and the calorie that is consumed in running with 111 the place aheads; Load cell module 190, be used to measure run with 111 previous sections and run with 111 aft section from user's load transmitted; And the control module (not shown), be used for controlling the band of running and quicken or deceleration according to the value that load cell module 190 is measured.

Runway unit 110 comprises: be with 111 for the user provides the running of the continuous rotation of the environment of running or walk; A pair of roller 112 is used for being with 111 end guiding running in running; Driver element 112a is used for drive roller 112 and is with 111 to rotate so that make to run; Platen 113, it is formed in running with 111 upper surface and the flat board between the lower surface, so that supporting is from user's weight or impact; Framework 114, thus it all contacts supporting platen 113 with the left end side of platen 113 with the right-hand member side; A plurality of yielding rubbers 115, it is installed between platen 113 and the framework 114, impacts so that absorb; Trim 115, it is made by metal material, outside the both sides of cover framework 114 make that framework 114 is not exposed to; Backing roll 117 is used to support the previous section of treadmills 100; Support member 118 is used to support the aft section of treadmills 100.

As shown in Figure 3, run and be with 111 to be installed to be constantly rotation between above-mentioned roller 112, platen 113 is installed in runs with between 111 the upper surface and lower surface.Here, the both end sides of platen 113 all be placed on from framework 114 outstanding '

' on the shape member 114a, be inserted in yielding rubber 115 between platen member 114a and the platen 113 and weakened impact load to user's knee, thereby protection user's knee.

Herein, acceleration region 151, I is formed at the previous section of running with 111, constant speed region 152, II is formed at the middle part of running with 111, the zone 153 of slowing down, III is formed at the aft section of running with 111.That is, when the user is positioned at acceleration region 151, during I, the pace of the band of running is accelerated, when the user is positioned at constant speed region 152, during II, the pace of the band of running is held, when the user is positioned at the zone 153 of slowing down, during III, the pace of the band of running is slowed down.

As shown in figure 10, acceleration region 151 is divided into and is positioned at the acceleration region 151 top first acceleration region 151a, is positioned at the second acceleration region 151b at acceleration region 151 middle parts and is positioned at acceleration region 151 rearmost the 3rd acceleration region 151c.Therefore, when the user is positioned at the first acceleration region 151a, runs and accelerate with maximum acceleration degree with 111 speed.On the contrary, when the user is positioned at the 3rd acceleration region 151c, runs and accelerate with minimum acceleration degree with 111 speed.

Equally, the deceleration zone 153 that is located in constant speed region 152 back be divided into be positioned at the zone 153 top first of slowing down slow down regional 153a, be positioned at slow down regional 153b and be positioned at the zone 153 rearmost stop area 153c that slow down of second of regional 153 middle parts of slowing down.Herein, when the user was positioned at the regional 153b of second deceleration, running was compared when the user is positioned at the regional 153a of first deceleration with 111 speed and is more promptly slowed down.And, when the user is positioned at stop area because will think the user owing to skill immature or too tired out being pushed into run with 111 backmost, so in order to ensure user's safety, the advancing of band of running slowly stopped.

Control panel unit 120 comprises: control panel 121, and calories that be used to indicate current pace, run row distance, consumed etc., and it has a plurality of load buttons are used for order and run or walk or be used to control the inclination of running with 111; A pair of handlebar 122, stretch out its bottom from control panel 121, for the user when taking exercise or grasping in case of emergency; Connector 124, it is 110 extensions from the runway unit, make control panel 121 can be positioned at the height of user's waist; Parallel member, it connects two connectors 124 to strengthen the lateral stiffness of connector 124.Herein, the manual sphygmometer (handpulse) that is used to measure user's pulse is installed in the surface of connector 124.

Load cell module 190 is installed in the previous section and the aft section of running with 111 respectively, so that measure via platen 113 from user's load transmitted.Load cell module 190 comprises: the middleware 191 that crosses out from framework 114; Be fixed to the bool 192 on each middleware 191, be used for by load suitably crooked via platen 113; And attached strain gauge 193a, 193b, 194a and 194b on each bottom surface of each bool 192, these strain gauges are out of shape according to the distortion of bool 192 in their elastic range thus.

Herein, middleware 191 and bool 192 are when being folded, and by combining securely such as the through hole 191a of bolt, the fastener of 192a, these members 191,192 are incited somebody to action mutually bulk deformation together thus.The hole 192b that the bool 192 other holes with yielding rubber 115 are aimed at is used for bool 192 and yielding rubber 115 are combined.

As shown in Figure 8, control module comprises Wheatstone bridge, and this Wheatstone bridge comprises: a pair of preceding strain gauge 194a, 194b with resistance R 2 is used to measure the load of running with 111 previous sections; And a pair of back strain gauge 193a, 193b with resistance R 1, be used to measure the load of running with 111 aft section, wherein should be toward each other to preceding strain gauge 194a, 194b, this is to back strain gauge 193a, 193b toward each other.And control module comprises: amplifier is used to be amplified in the bridge voltage Δ V between 1: 181 and 1: 182 between preceding strain gauge 194a, 194b and back strain gauge 193a, the 193b; Analogue-to-digital converters are used for converting the analog electrical bridge voltage after amplifying to digital electric bridge voltage and handle for carrying out signal.That is, control module control driver element 112a accelerates or the rotation of the roller 112 that slows down, thereby control is run with 111 pace.

At this moment, when being applied to voltage V on the wheatstone bridge circuits, the bridge voltage Δ V between 1: 181 and 1: 182 is represented as previous equations 1.

Therefore, when the user has skew ground to be positioned to run with 111 previous section or aft section, this strain gauge resistance the when resistance of the strain gauge at place, position is not offset greater than the user when being installed in the user skew being arranged.Therefore, the symbol of bridge voltage Δ V skew is arranged is in the previous section or the aft section transformation of running with 111 according to the user.In addition, skew ground is in the arbitrary portion of running with 111 along with the user has more, and the numerical value of bridge voltage Δ V (being absolute value) becomes bigger, therefore, determines acceleration degree or degree of deceleration pro rata with the numerical value of bridge voltage Δ V.

Herein, because analog electrical bridge voltage Δ V-arrangement becomes sinusoidal wave, so can produce error according to Measuring Time.Therefore, be necessary in detecting the unit interval Δ t that user's center of gravity moves, bridge voltage Δ V to be averaged.Therefore, the speed control unit of the present embodiment is caught moving of user based on the average electrical bridge voltage Δ Vavg in unit interval Δ t.

In addition, preceding strain gauge 194a, 194b with back strain gauge 193a, 193b is shaped as has identical resistance.Yet, all be acceptable such as any resistance of 120 Ω or 350 Ω.

Below, with reference to Figure 11, the operation principle according to the auto-speed control device of second embodiment of the present invention is described.

At first, the user's deviation range of allowing that does not change the pace of the band of running is stored and is preset in the control module with the form of the bridge voltage Δ Vset (being initial preset voltage) after transforming.

Thereafter, when the user set foot on treadmills and by the start button on the control panel 121 with walking on running is with or when running, in about 15 seconds time, do not change the speed of running automatically with 111, load cell module 190 measure run with 111 previous sections and run with 111 aft section via the load of platen 113 from the user, can grasp the tendency that the user likes the part after running is still leaned on slightly with 111 forward slightly parts to take exercise thus.Particularly, in about one minute time after just beginning to take exercise, the average voltage of the measuring bridge voltage Δ V of Wheatstone bridge shown in Figure 8 is stored as with reference to bridge voltage Δ Vref, and whether this changes the standard of running with 111 pace with reference to bridge voltage.

Thereafter, run a good foot in running with 111 pace and therefore have skew ground to be in to run under the situation with 111 previous section the user, obtain to detect the average electrical bridge voltage Δ Vavg in the unit interval Δ t that user's center of gravity moves continuously or periodically.

Therefore, when the user was mobile forward or backward on running is with, average electrical bridge voltage Δ Vavg changed continuously, and average electrical bridge voltage Δ Vavg and also change with reference to poor (Δ Vavg-Δ Vref) between the bridge voltage Δ Vref.At this moment, may cause unsettled exercise environment owing to only run with 111 speed, with 111 speed it be changed when poor (Δ Vavg-Δ Vref) surpasses pre-set criteria A or Δ Fset or Δ Vset so wish that control is run according to poor (Δ Vavg-Δ Vref) control.That is, determine that by the symbol of poor (Δ Vavg-Δ Vref) the running band is accelerated or is decelerated, and determines acceleration degree or degree of deceleration by the absolute value of poor (Δ Vavg-Δ Vref).

Therefore, when the absolute value of be on duty (Δ Vavg-Δ Vref) surpasses initial pre-set criteria Δ Vse, will think that the user is with on 111 in running to move.Therefore,, will control the band of running and quicken, when the user is mobile backward, will controls the band of running and slow down if the user moves forward.

When the user moves forward above initial presetting range, because the bool 192 in the band previous section of running is subjected to more crooked greatly than the bool in its aft section, the resistance R 2 of preceding strain gauge 194a, 194b becomes bigger, yet, because bool 192 bendings in the band aft section of running are very little, resistance R 1 variation of strain gauge 193a, 193b is very little after the institute.Therefore, according to equation 1, the symbol of bridge voltage Δ Vavg becomes negative (-), and is with on 111 along with the user has to be positioned to skew to run more, and the absolute value of bridge voltage Δ Vavg becomes bigger.At this moment, when the absolute value of (Δ Vavg-Δ Vref) surpasses initial preset voltage Δ Vset, even the user does not import the signal of any acceleration, control module also can be controlled the pace of running with 111 accelerates its absolute value with (Δ Vavg-Δ Vref) pro rata.

Similarly, when the user moves forward above initial presetting range, because the bool 192 in the band aft section of running is subjected to more crooked greatly than the bool in its previous section, the resistance R 1 of back strain gauge 193a, 193b becomes bigger, yet, because bool 192 bendings in the band aft section of running are very little, resistance R 2 variations of strain gauge 194a, 194b are very little before the institute.Therefore, according to equation 1, the symbol of bridge voltage Δ V becomes just (+), and is with on 111 along with the user has to be positioned to skew to run more, and the absolute value of bridge voltage Δ Vavg becomes bigger.At this moment, when the absolute value of (Δ Vavg-Δ Vref) surpasses initial preset voltage Δ Vset, even the user does not import the signal of any deceleration, control module also can be controlled the pace of running with 111 slows down its absolute value with (Δ Vavg-Δ Vref) pro rata.

On the contrary, the absolute value of be on duty (Δ Vavg-Δ Vref) will detect the user and move on running is with during less than initial pre-set criteria Δ Vset.In the case, when the user is positioned at acceleration region 151, runs and be with 111 to be controlled as acceleration, when the user is positioned at constant speed region 152, running is with 111 to be controlled as the maintenance constant speed, slows down regionally 153 the time when the user is positioned at, and runs and is with 111 to be controlled as deceleration.

At this moment, can detect the user by poor (Δ Vavg-Δ Vref) and be positioned at which zone.

Herein, when the user from constant speed region 152 to acceleration region 151 or from acceleration region 151 when move in the zone 153 of slowing down, because user's moving direction is consistent with the direction of the velocity vector of the band of running, the user can be because of the inertia skew easily of running counter to its intention.In addition, consider inertia maximum when the user stops it and moves, when the user finishes forward or backward mobile when pre-set criteria Δ Vset (absolute value of be on duty (Δ Vavg-Δ Vref) surpass initial), thereby to avoid the user to be run counter to that it is intended to be offset be very effective for the mobile opposite acceleration of instantaneous application and user this moment or deceleration mode.

When the user moves forward so that during direct control control panel 121, the user is usually located at the previous section of running with 111.In the case, because the user does not plan to run much faster, be with acceleration that the user is felt under the weather so will run.Therefore, under the situation of control panel 121 input arbitrary signals, such as running with 111 pace and the service condition tilting will temporarily remain unchanged.

And, be pushed to the user that being positioned at runs is with under the 111 rearmost situations, in order to ensure user's safety, control module 120 can stop the operation of driver element 112a.

Auto-speed control lasts till that always the user stops to take exercise.

Hereinafter, with reference to Figure 12 and 13, the first operation embodiment according to the auto-speed control device that is used for treadmills is described.The first operation embodiment is intended to use acceleration or the deceleration mode opposite with user's moving direction at this moment when finishing it the user and move and eliminates the unintentional skew of user.

Figure 12 show when the user running be with on 111 from constant speed region to acceleration region move, then from acceleration region when constant speed region moves, according to the curve map 201 of the user position (the right longitudinal axis) of time and according to the curve map 301 of the running tape speed of time.

As long as the user stop in constant speed region 152 (～t1), the band of running also just is controlled as with constant speed and moves.Begin from constant speed region 152 (t1～t2) under the situation that acceleration region 151 moves the user, owing to will think that the user wishes to run much faster, although so the user rests in the constant speed region 152, the band of running in the process that the user moves forward is controlled as acceleration.Thereafter, (t2～t3), running is controlled as with bigger acceleration degree acceleration with 111 when the user enters acceleration region 151.

Begin (t3～t4),, run and be with 111 to be controlled as instantaneous deceleration under the situation that acceleration region 151 stops the user in order to prevent the user owing to the inertia force of running counter to its intention is offset.Thereafter, when the user was positioned at acceleration region 151, the band of running was controlled as to quicken with acceleration region 151a, 151b and the corresponding predetermined acceleration of 151c.

(t4～t5) is because the user wants to run slowlyer, so though the user is positioned at acceleration region 151, runs to be controlled as with low degree of deceleration with 111 and slow down when the user begins from acceleration region 151 when mobile backward.And, even (t5～t6), running is with 111 also to be controlled as deceleration at leisure when the user arrives constant speed region 152.Finish backward the user and to move and when constant speed region 152 was stopped, in order to prevent the user owing to the inertia force of running counter to its intention is offset, running was with 111 to be controlled as instantaneous acceleration, is maintained at constant speed then.

Herein, t3 constantly instantaneous deceleration and t6 instantaneous acceleration constantly respectively by just the acceleration degree before the t3 and just the degree of deceleration before t6 determine, thereby prevent that effectively the user unconsciously is offset owing to inertia force.

Figure 13 show when the user running be with on 111 from constant speed region to the zone of slowing down move, then from slowing down the zone when constant speed region moves, according to the curve map 202 of the user position (the right longitudinal axis) of time and according to the curve map 302 of the running tape speed of time.

As long as the user stop in constant speed region 152 (～t1), the band of running just also is controlled as with constant speed and moves.Begin from constant speed region 152 (t1～t2) under zone 153 situations about moving of slowing down the user, to think that the user wishes to run slowlyer, although the user rests in the constant speed region 152, the band of running in the process that the user moves backward is controlled as at leisure and slows down.When user enter slow down regional 153 time (t2～t3) run with 111 be controlled as with bigger degree of deceleration slow down thereafter.

(t3～t4),, run and be with 111 to be controlled as instantaneous acceleration under the user begins slowing down zone 153 situations of stopping in order to prevent the user owing to the inertia force of running counter to its intention is offset.Thereafter, slow down regionally 153 the time when the user is positioned at, the band of running is controlled as to slow down with the corresponding predetermined acceleration of regional 153a, 153b of slowing down.Herein, run with 111 backmost if the user is positioned at, i.e. stop area 153c runs and is with 111 to be controlled as and to stop.

(t4～t5) is because the user wants to run much faster, so though the user is positioned at the zone 153 of slowing down, runs and be with 111 to be controlled as acceleration at leisure when the user begins from the zone 153 when moving forward of slowing down.And, even (t5～t6), running is with 111 still to be controlled as acceleration at leisure when the user arrives constant speed region 152.Finish to move forward and when constant speed region 152 is stopped the user,, run and be with 111 to be controlled as instantaneous deceleration, be maintained at constant speed then in order to prevent the user owing to the inertia force of running counter to its intention is offset.

Herein, t3 constantly instantaneous acceleration and t6 instantaneous deceleration constantly respectively by just the degree of deceleration before the t3 and just the acceleration degree before t6 determine, thereby prevent that effectively the user unconsciously is offset owing to inertia force.

Hereinafter, with reference to Figure 14 and 15, the second operation embodiment according to the auto-speed control device that is used for treadmills is described.The second operation embodiment also is intended to use when finishing it the user and move the aero mode that weaken identical with the moving direction of user this moment or the deceleration mode that weakens, the unintentional skew of elimination user.

Figure 14 show when the user running be with on 111 from constant speed region to acceleration region move, then from acceleration region when constant speed region moves, according to the curve map 201 of the user position (the right longitudinal axis) of time and according to the curve map 401 of the running tape speed of time.

The second operation embodiment from the control model of t1 to t3 with to move embodiment with reference to above-mentioned first of Figure 12 identical.

But the second operation embodiment has the purpose that reduction user when opposite acceleration of instantaneous application or deceleration mode may feel the degree of uncomfortable impact.Therefore, the second operation embodiment is not mobile opposite acceleration or the deceleration mode of using with the user, but the acceleration or the deceleration of application and user's mobile corresponding to mitigation.Particularly, (t4～t5) as long as the user is positioned at acceleration region 151, runs just to be controlled as with lower acceleration degree with 111 and quickens when the user begins from acceleration region 151 when mobile backward.In addition, (t5～t6), running is controlled as with the acceleration degree acceleration more much lower than the acceleration degree during t4～t5 with 111 when the user arrives constant speed region 152.In addition, when the user when constant speed region 153 is stopped (t6～), in order to prevent that the user from by backward inertia force influence, running and being with 111 to be controlled as instantaneous acceleration.Herein, acceleration degree is less than the acceleration degree constantly of t6 among Figure 12.When user be positioned at constant speed region, run be with 111 be controlled as steadily maintenance thereafter.

Figure 15 shown when the user running be with on 111 from constant speed region to the zone of slowing down move, then from slowing down the zone when constant speed region moves, according to the curve map 202 of the user position (the right longitudinal axis) of time and according to the curve map 402 of the running tape speed of time.

Similarly, the second operation embodiment from the control model of t1 to t3 with to move embodiment with reference to above-mentioned first of Figure 13 identical.

But the second operation embodiment has the purpose that reduction user when opposite acceleration of instantaneous application or deceleration mode may feel the degree of uncomfortable impact.Therefore, the second operation embodiment is not mobile opposite acceleration or the deceleration mode of using with the user, but the acceleration or the deceleration of application and user's mobile corresponding to mitigation.Particularly, (t4～t5), as long as the user is positioned at the zone 153 of slowing down, running just is controlled as with lower degree of deceleration with 111 slows down when the zone 153 of slowing down moves forward when the user begins.In addition, (t5～t6), running is controlled as with the degree of deceleration deceleration more much lower than the degree of deceleration during t4～t5 with 111 when the user arrives constant speed region 152.In addition, when the user when constant speed region 153 is stopped (t6～), in order to prevent that the user from by forward inertia force influence, running and being with 111 to be controlled as instantaneous deceleration.Herein, degree of deceleration is less than the degree of deceleration constantly of t6 among Figure 14.When user be positioned at constant speed region, run be with 111 be controlled as steadily maintenance thereafter.

Auto-speed control lasts till that always the user stops to take exercise.

Hereinafter, the 3rd embodiment of the present invention will be described.

Shown in Figure 16 to 25, the treadmills 100 that is used for its auto-speed control device according to being equipped with of first embodiment of the invention comprises: runway unit 110 is used to make run and is with 111 constantly to advance, so that provide the exercise environment for the user; Control panel unit 120, it shows the speed of service and the calorie that is consumed in running with 111 the place aheads; Load cell module 190, be used to measure run with 111 previous sections and run with 111 aft section from user's load transmitted; And the control module (not shown), be used for controlling the band of running and quicken or deceleration according to the value that load cell module 190 is measured.

Runway unit 110 comprises: be with 111 for the user provides the running of the continuous rotation of the environment of running or walk; A pair of roller 112 is used for being with 111 end guiding running in running; Driver element 112a is used for drive roller 120, is with 111 to rotate so that make to run; Platen 113, it is formed in running with 111 upper surface and the flat board between the lower surface, so that supporting is from user's weight or impact; Framework 114, it all contacts with the right-hand member side with the left end side of platen 113, thus supporting platen 113; A plurality of yielding rubbers 115, it is installed between platen 113 and the framework 114, impacts so that absorb; Trim 115, it is made by metal material, outside the both sides of cover framework 114 make that framework 114 is not exposed to; Backing roll 117 is used to support the previous section of treadmills 100; Support member 118 is used to support the aft section of treadmills 100.

As shown in figure 17, run and be with 111 to be installed to be constantly rotation between above-mentioned roller 112, platen 113 is installed in runs with between 111 the upper surface and lower surface.Here, the both end sides of platen 113 all be placed on from framework 114 outstanding ' ' on the shape member 114a, be inserted in yielding rubber 115 between platen member 114a and the platen 113 and weakened impact load to user's knee, thereby protection user's knee.

Control panel unit 120 comprises: control panel 121, and calories that be used to indicate current pace, run row distance, consumed etc., and have a plurality of load buttons are used for order and run or walk or be used to control the inclination of running with 111; A pair of handlebar 122, stretch out its bottom from control panel 121, for the user when taking exercise or grasping in case of emergency; Connector 124, it is 110 extensions from the runway unit, make control panel 121 can be positioned at the height of user's waist; Parallel member, it connects two connectors 124 to strengthen the lateral stiffness of connector 124.But with user intention the run pace of band of control automatically consistently, being used to control the button of running with 111 speed is not to form on control panel 121.

Load cell module 190 is installed in the previous section and the aft section of running with 111 respectively, so that measure via platen 113 from user's load transmitted.Load cell module 190 comprises: middleware 191, and it crosses out from framework 114; Be fixed to the bool 192 on each middleware 191, be used for by load suitably crooked via platen 113; Attached strain gauge 171a-173b, 181a-183b on each bottom surface of each bool 192, these strain gauges are out of shape according to the distortion of bool 192 in their elastic range thus.

Herein, 6 preceding strain gauge modules that have strain gauge 181a, 182a, 183a, 181b, 181b, 183b respectively are installed in the previous section of platen 113.Particularly, 6 preceding strain gauge modules are divided into 3 pairs before strain gauge module (being 181a-181b, 182a-182b, 183a-183b), and as shown in figure 20, the strain gauge module is installed in the right side and the left side of running with 111 different previous section before every pair.On the contrary, 2 back strain gauge modules that have 3 strain gauge 171a-173a, 171b-173b respectively are installed in the aft section of platen 113.Particularly, as shown in figure 20, after 2 the strain gauge mould determine (being 171a-173a, 171b-173b) be installed in the right side and the left side of running respectively with 111 identical aft section.Promptly, each group that comprises strain gauge 171a-173a after 3 or 171b-173b is attached in parallel to each other on bool 192, therefore strain gauge 171a-173a or 171b-173b bending are identical behind 3 in a group, thereby their resistance has identical variation.

And by combining securely such as the through hole 191a of bolt, the fastener of 192a, these members 191,192 are incited somebody to action mutually bulk deformation together thus when being folded for middleware 191 and bool 192.The hole 192b that other the hole with yielding rubber 115 of bool 192 is aimed at is used for bool 192 and yielding rubber 115 are combined.

As shown in figure 24, control module comprises 3 Wheatstone bridges, these Wheatstone bridges are by differently being positioned at the previous section L1 that runs with 111, L2, strain gauge 181a-181b before 3 couple who is used for sensing lead of L 3,182a-182b, 183a-183b and being positioned in runs with strain gauge 171a-171b behind 3 couple who is used for sensing lead of 111 identical aft section, 172a-172b, 173a-173b forms, these preceding strain gauge 181a-181b, 182a-182b, 183a-183b has resistance R 11 respectively, R12, R13, these backs strain gauge 171a-171b, 172a-172b, 173a-173b has resistance R 01 respectively, R02, R03, wherein described in each Wheatstone bridge to preceding strain gauge 181a-181b, 182a-182b, 183a-183b toward each other, described in each Wheatstone bridge to back strain gauge 171a-171b, 172a-172b, 173a-173b toward each other.And, control module comprises: amplifier, be used to be amplified in bridge voltage Δ V1, Δ V2, Δ V 3 between each 161a, 162a, 163a and each 161b, 162b, the 163b at first at second, these first 161a, 162a, 163a and second 161b, 162b, 163b are between preceding strain gauge 181a, 181b, 182a, 182b, 183a, 183b and back strain gauge 171a, 171b, 172a, 172b, 173a, 173b; Analogue-to-digital converters are used for converting the analog electrical bridge voltage after amplifying to digital electric bridge voltage and handle for carrying out signal.That is, control module control driver element 112a accelerates or the rotation of the roller 112 that slows down, thereby control is run with 111 pace.

At this moment, when being applied to supply voltage V on each wheatstone bridge circuits, each bridge voltage Δ V1, Δ V2, Δ V3 between each first 161a, 162a, 163a and each second 161b, 162b, 163b are represented as previous equations 2 to 4.

Therefore, when the user has skew ground to be positioned to run with 111 previous section or aft section, this strain gauge resistance the when resistance of the strain gauge at place, position is not offset greater than the user when being installed in the user skew being arranged.Therefore, the symbol of bridge voltage Δ V1, Δ V2, Δ V3 skew is arranged is positioned at the previous section or the aft section transformation of running with 111 according to the user.In addition, skew ground is positioned at the arbitrary portion of running with 111 along with the user has more, the numerical value of bridge voltage Δ V1, Δ V2, Δ V3 (being absolute value) becomes bigger, therefore, determines acceleration degree or degree of deceleration pro rata with the numerical value of bridge voltage Δ V1, Δ V2, Δ V3.

Herein, preceding strain gauge 181a, 181b, 182a, 182b, 183a, 183b and back strain gauge 171a, 171b, 172a, 172b, 173a, 173b is shaped as still has identical resistance.Yet, all be acceptable such as any resistance of 120 Ω or 350 Ω.

Below, with reference to Figure 25, the operation principle according to the auto-speed control device of the 3rd embodiment of the present invention is described.

At first, the user's deviation range of allowing that does not change the pace of the band of running is stored and is preset in the control module with the form of the bridge voltage Δ Vset (being initial preset voltage) after transforming.Herein, initial preset voltage Δ Vset is that mean value according to each bridge voltage Δ V1, Δ V2, Δ V3 is provided with.

Thereafter, when the user set foot on treadmills and by the start button on the control panel 121 with walking on running is with or when running, in about 10 seconds to 60 seconds time, do not change the speed of running automatically with 111, load cell module 190 measure run with 111 previous sections and run with 111 aft section via the load of platen 113 from the user, can grasp the tendency that the user likes the part after running is still leaned on slightly with 111 forward slightly parts to take exercise thus.Particularly, in about one minute time after just beginning to take exercise, the measuring bridge voltage Δ V1 of Wheatstone bridge shown in Figure 24, the average voltage of Δ V2, Δ V3 are stored and are reference bridge voltage Δ Vref, and whether this changes the standard of running with 111 pace with reference to bridge voltage.

Thereafter, when user run much faster and become skew ground is positioned at when running with 111 previous section, because be subjected to more crooked greatly with top bool 192 than other bool in its previous section in running, so it is maximum that the resistance R 11 of top strain gauge 181a, 181b becomes, yet because very little in bool 192 bendings of the band aft section of running, the resistance R 01 of strain gauge 171a, 171b, 172a, 172b, 173a, 173b after the institute, R02, R03 variation are very little.Therefore, according to equation 2 to 4, the symbol of bridge voltage Δ V1, Δ V2, Δ V3 becomes negative (-), and is with on 111 along with the user has to be positioned to skew to run more, and the absolute value of bridge voltage Δ V1, Δ V2, Δ V3 becomes bigger.That is, the absolute value of Δ V1 becomes greater than the absolute value of Δ V3.At this moment, if the mean value of Δ V1, Δ V2, Δ V3 is expressed as Δ Vavg, then when the absolute value of (Δ Vavg-Δ Vref) surpasses initial preset voltage Δ Vset, because surpassing, the degree that the user is offset forward initially presets degree, even the user does not import the signal of any acceleration, control module also can be controlled the pace of running with 111 accelerates its absolute value with (Δ Vavg-Δ Vref) pro rata.

Similarly, when the user run slowlyer and the skew ground of becoming be positioned at run with 111 than aft section the time, because be subjected to than bending with top bool 192, so that the resistance R 11 of top strain gauge 181a, 181b becomes is minimum in the littler degree of other bool of its previous section in running.In addition, though be with top bool bending bigger relatively because be with the rearmost bool 192 of previous section to compare in running in running, the resistance R 13 of preceding strain gauge 183a, 183b becomes can be not littler than the resistance of top strain gauge 181a, 181b, but when resting on the core of the band of running with the user (, more specifically, can not cause the presetting range that the pace of the band of running changes) to compare bending less relatively.Therefore, according to equation 2-4, the symbol of bridge voltage Δ V1, Δ V2, Δ V3 becomes just (+), and is with on 111 along with the user has to be positioned to skew to run more, and the absolute value of bridge voltage Δ V1, Δ V2, Δ V3 becomes bigger.At this moment, when the absolute value of (Δ Vavg-Δ Vref) surpasses initial preset voltage Δ Vset, because surpassing, the degree that the user is offset backward initially presets degree, so even the user does not import the signal of any deceleration, control module also can be controlled the pace of running with 111 slows down its absolute value with (Δ Vavg-Δ Vref) pro rata.

Herein, the absolute value according to (Δ V1-Δ Vref) or (Δ V3-Δ Vref) is provided with the acceleration degree or the degree of deceleration of running with 111.

On the other hand, the pace of the average voltage Δ Vavg control running band that does not obtain according to all bridge voltage Δ V1, Δ V2, Δ V3 are averaged, when circuit has more than 3 Wheatstone bridges, the Wheatstone bridge that will comprise top strain gauge and/or rearmost strain gauge forecloses, according to the average voltage that remaining bridge voltage is averaged and obtained, can control the band of running and quicken or deceleration.In the case, according to bridge voltage with reference to differing from or have the bridge voltage of the second rearmost strain gauge and, the acceleration degree or the degree of deceleration of running with 111 are set between the bridge voltage with reference to the absolute value of the difference between the bridge voltage with second top strain gauge.

Herein, determining to accelerate by the symbol of (Δ Vavg-Δ Vref) still is the pace that slows down and run and be with.

Auto-speed control lasts till that always the user stops to take exercise.

Industrial usability

Because can be in the situation that does not depart from purport of the present invention and substantive characteristics in a variety of forms Implement the present invention, so unless should also be understood that in addition regulation, before above-mentioned embodiment is not limited to State any details in the description, and purport and model that should be defined in appended claims Enclose and interiorly broadly explained, therefore be intended to all boundaries that fall into these claims and scope, Perhaps the change in the equivalent of this boundary and scope and modification are all comprised by appended claims Interior.

That is to say, about the previous section that is formed at treadmill belt or aft section at least One side, as two a pair of strain gauges exemplary embodiment of the present invention has been described. But Be, the present invention be also included within the left side of previous section and right side and in the back part the left side and The right side is formed with respectively the treadmill belt of strain gauge.

And exemplary embodiment comprises the load cell module between platen 113 and framework 114, but the present invention also can by with strain gauge attached framework 114 "

" The upper different value computational load that comes according to framework 114 of shape platen plate supporting part 114a, with this as survey The mode of amount user position.

Be fit to user's happiness as for detecting the position of user on runway, comprised to catch The step of good exercise position, but can not comprise this step, alternatively, can use The speed that the numerical value of bridge voltage difference Δ V and symbol are directly controlled treadmill belt 111. In order to keep away Exempt from determine aspect the acceleration or deceleration excessively sensitive, as the absolute value delta V of described bridge voltage difference During less than a particular value, treadmills of the present invention keeps initial value Δ Vset and does not change speed, But this can optionally be applied. In the case, because treadmill belt is at Δ Vset And under the condition of Δ V, be accelerated when not having initial value or slow down, so the speed of treadmill belt Degree is by absolute value and the Signed Domination of Δ V.

Claims (32)

1. A running band that is used to comprise continuous rotation, be used to drive the speed control unit of treadmills of the driver element of this running band, comprising:

   Load cell before at least one, the previous section that it is positioned at the band of running is used to measure from running with the load of going up the user;

   At least one back loading sensor, the aft section that it is positioned at the band of running is used to measure from running with the load of going up the user; And

   Control module is used for the speed of accelerating or slowing down and run and be with based on the measured value control driver element of preceding load cell and back loading sensor.
2. 2. speed control unit as claimed in claim 1, wherein this control module is by detecting user's position according to the difference of the measured value that is somebody's turn to do preceding load cell and this back loading sensor, what the control running was with when the user is positioned at the previous section of the band of running speeding up, and the speed that the control running is with when the user is positioned at the aft section of the band of running slows down.
3. 3. speed control unit as claimed in claim 1 or 2 wherein should be formed at least one preceding load unit by preceding load cell, and this back loading sensor is formed at least one back loading unit.
4. 4. speed control unit as claimed in claim 1 or 2 wherein should be formed at least one preceding strain gauge by preceding load cell, and this back loading sensor is formed at least one back strain gauge.
5. 5. speed control unit as claimed in claim 5 wherein should be formed a pair of preceding strain gauge and a pair of back strain gauge respectively with this back loading sensor by preceding load cell, and have identical resistance mutually;

   Wherein should constitute at least one Wheatstone bridge to the back strain gauge to preceding strain gauge and this, in this Wheatstone bridge before strain gauge toward each other and the back strain gauge toward each other;

   And wherein this control module basis is controlled the speed of running and being with at the bridge voltage between two points between preceding strain gauge and the back strain gauge.
6. 6. speed control unit as claimed in claim 1 is comprising load cell and this back loading sensor before a plurality of being somebody's turn to do.
7. 7. speed control unit as claimed in claim 6 increase the acceleration degree when wherein the measured value at this control module load cell place up front increases, and this control module reduces degree of deceleration when in the end the measured value at the load cell place of face reduces.
8. 8. speed control unit as claimed in claim 6, strain gauge was right before load cell was formed respectively before wherein being somebody's turn to do, and it is right that this back loading sensor is formed the back strain gauge respectively, and these strain gauges all have identical resistance mutually;

   Wherein should before strain gauge to this back strain gauge to lay respectively at identical preceding inlet wire (proceeding line) (L1, L2 ...) locate, and constitute a plurality of Wheatstone bridges, in these Wheatstone bridges before strain gauge toward each other and the back strain gauge toward each other;

   And wherein this control module basis is controlled the speed of running and being with at the bridge voltage between the point between preceding strain gauge and the back strain gauge.
9. 9. speed control unit as claimed in claim 1, wherein this treadmills also comprises: being used to below the band of running support run with on user's platen; And the framework that is used to support this platen;

   Load cell and this back loading sensor are installed between this platen and this framework before wherein being somebody's turn to do.
10. A running band that is used to comprise continuous rotation, be used to drive the method for control speed of treadmills of the driver element of this running band, comprising:

    Measure to run at least one previous section of band and the band of running at least one aft section because the step of the load that produces with last user's weight of running;

    The measured value of the aft section by the previous section of the band of relatively running and the band of running detect the user running with on the step of position; And

    When detecting the user and be positioned at the previous section of the band of running control run speeding up of band and when detecting the user and be positioned at the aft section of the band of running the control step that the speed be with slows down of running.
11. 11. method for control speed as claimed in claim 10 also comprises:

    To the measured value of the aft section of the previous section of the band of running in the preset time and the band of running average in case discern the user running with on the step be inclined to of position.
12. 12. as claim 10 or 11 described method for control speed, the speed of band of wherein running when the user is positioned at the zone of mid portion of the band of running is maintained at constant speed, just controlling when having only outside the user is positioned at this zone runs speeding up of being with or slow down.
13. 13. as claim 10 or 11 described method for control speed, wherein the step of this sensing lead realizes by at least one bridge voltage of measuring Wheatstone bridge, and this Wheatstone bridge is made up of strain gauge before a pair of previous section that is installed in the band of running respect to one another and a pair of back respect to one another strain gauge that is installed in the aft section of the band of running;

    And the speed of the band of wherein running when this bridge voltage is in a presetting range is maintained at constant speed, has only and just control speeding up or slowing down of the band of running when this bridge voltage is outside this presetting range.
14. 14. a speed control unit that is used for treadmills, this treadmills comprise platen, on the upper surface of platen and lower surface the moving running band of not stall and be used to drive the driver element that this runnings is with, this speed control unit comprises:

    Load cell and before at least one of the previous section of the band of running at least one back loading sensor of the aft section of the band of running, be used to detect the user running with on the position;

    Wherein by the measured value of these sensors relatively catch the user running with on the position, and, when the user running with on add the speed of running with spring steps band when moving forward, when the user running with on the speed of band of running that slows down when mobile backward.
15. 15. speed control unit as claimed in claim 14 is wherein averaged to the value that records by this preceding load cell and this back loading sensor in the unit interval; And

    When the difference according to these mean values of time becomes when being lower than pre-set criteria, under the situation that the speed of the band of running is just being accelerated, the speed of the band of running was slowed down by moment, and under the situation that the speed of the band of running is just being slowed down, the speed of the band of running was accelerated by moment.
16. 16. speed control unit as claimed in claim 14 is wherein averaged to the value that records by this preceding load cell and this back loading sensor in the unit interval; And

    When the difference according to these mean values of time becomes when being lower than pre-set criteria, under the situation that the speed of the band of running is just being accelerated, the acceleration degree of the band of running was reduced by moment, and is opposite, under the situation that the speed that running is with is just being slowed down, the degree of deceleration of the band of running was reduced by moment.
17. 17. a speed control unit that is used for treadmills, this treadmills comprise platen, on the upper surface of platen and lower surface the moving running band of not stall and be used to drive the driver element that this runnings is with, this speed control unit comprises:

    Be arranged on run with on the acceleration region of previous section, be used for when the user is positioned at this acceleration region, adding the speed of running with spring steps band;

    Be arranged on run with on the deceleration zone of aft section, be used for the speed that when the user is positioned at this decelerations zone, slows down and run and be with; And

    At least one back loading sensor of being positioned at load cell before at least one of previous section of the band of running and being positioned at the aft section of the band of running, be used to detect the user running with on the position,

    Wherein pass through relatively to detect user's position from the measured value of preceding load cell and back loading sensor, thereby, when the user is on acceleration region, making the band acceleration of running, the band of running is slowed down.
18. 18. speed control unit as claimed in claim 17 also comprises:

    Be arranged on run with on the constant speed region of mid portion, be used for when the user arrives this constant speed region, keeping the speed of running and being with.
19. 19. speed control unit as claimed in claim 17, wherein this acceleration region and this deceleration zone are divided into a plurality of zones respectively, and the deceleration of the acceleration of these zonings and these zonings differently is provided with mutually.
20. 20. speed control unit as claimed in claim 17 even wherein the user is not at acceleration region, also adds the speed of running with spring steps band when the user moves forward;

    Even and wherein the user is regional in deceleration, the speed that also slows down when the user is mobile backward and run and be with.
21. 21. speed control unit as claimed in claim 20, the speed of the band of wherein running be at first by user's mobile control, then, the speed of the band of running is secondly by Position Control of user.
22. 22. speed control unit as claimed in claim 17 also comprises:

    Be used to support the framework of this platen; And at least one member between this framework and this platen;

    Wherein should before load cell and this back loading sensor be formed respectively a pair of before strain gauge and a pair of back strain gauge, and have identical resistance mutually, and be mounted and be attached on this member;

    Wherein should constitute at least one Wheatstone bridge to the back strain gauge to preceding strain gauge and this, in this Wheatstone bridge before strain gauge toward each other and the back strain gauge toward each other; And

    Wherein realize described to from preceding load cell with from the comparison of the measured value of back loading sensor by the bridge voltage Δ V that measures this Wheatstone bridge.
23. 23. speed control unit, this speed control unit comprises platen, the moving running band of not stall and be used to drive the driver element that this runnings is with on the upper surface of platen and lower surface, wherein under the situation of user's operation control panel, the pace of band when the user operates keeps a scheduled time with running.
24. 24. a method for control speed that is used for treadmills, this treadmills comprise platen, on the upper surface of platen and lower surface the moving running band of not stall and be used to drive the driver element that this runnings is with, this method for control speed comprises:

    Measure to run at least one previous section of band and the band of running at least one aft section the position via the step of platen from user's load transmitted;

    The sensing lead of the position of at least one previous section of being with by relatively running and at least one aft section of running band detects user's mobile step;

    Control is run when the user moves forward, and band quickens or control the step that the band of running slows down when the user is mobile backward.
25. 25. method for control speed as claimed in claim 24 also comprises:

    The load from the user with the band aft section of running of the running band previous section measured in the scheduled time averaged so that catch step according to the user's of user's tendency position;

    The zone that comprises user's mean place in the given time is set to constant speed region, is set to acceleration region and the step in the zone that is set in the zone of this constant speed region back to slow down in this constant speed region region in front.
26. 26. method for control speed as claimed in claim 24, wherein, the band previous section of running in the scheduled time and the sensing lead Δ F band aft section of running or Δ V obtain average load Δ Favg or Δ Vavg by being averaged, average load Δ Favg or Δ Vavg and pre-set criteria A or Δ Fset or Δ Vset are compared, and determine that the user moves forward or move backward according to the numerical value of the difference between average load and the pre-set criteria and symbol, realize detecting user's the step that moves.
27. 27., also comprise as claim 24 or the described method for control speed of claim 25:

    When the user finish move forward and running with on when stopping instantaneous the band of running is slowed down or when the user running with on finish when mobile backward the step of hesitating of the instantaneous moment that makes the band acceleration of running.
28. 28. method for control speed as claimed in claim 27 also comprises:

    After hesitate step in this moment when the user finish move and when resting on acceleration region control run that band quickens or move and rest on the regional time control system step that band slows down of running of slowing down when the user finishes.
29. 29. method for control speed as claimed in claim 27 also comprises:

    When the step that the service condition of treadmills is kept when the control panel of treadmills is imported at least one signal the scheduled time.
30. 30. method for control speed as claimed in claim 24 also comprises:

    When relatively detecting the step that when user is positioned at part after the band of running leans on very much the band of running is stopped according to the measured value of the measured value of the band previous section of running and the band aft section of running.
31. 31. the treadmills that can measure user's weight comprises:

    Framework;

    Be placed on the platen on the framework;

    The moving running band of not stall on the upper surface of platen and lower surface;

    Wheatstone bridge circuits, it comprises a pair of being installed at preceding strain gauge on the front part between framework and the platen and a pair of back strain gauge on the back member between framework and the platen of being installed in the band aft section of running of the band previous section of running, wherein should before strain gauge and back strain gauge respectively toward each other;

    The weighing positions indicator is used to guide the user to stand thereon, the center location-independent of strain gauge and back strain gauge before it departs from; And

    Weight indicator, it shows user's weight according to wheatstone bridge circuits.
32. 32. a method for control speed that is used for treadmills, this treadmills comprise platen, on the upper surface of platen and lower surface the moving running band of not stall and be used to drive the driver element that this runnings is with, this method for control speed comprises:

    Measure to run at least one previous section of band and the band of running at least one aft section the position via the step of platen from user's load transmitted;

    The sensing lead of the position of at least one aft section by at least one previous section of the band of relatively running and the band of running detects the step of moving of user and/or user's position;

    The step that the band of running is stopped when the variation of time is in presetting range when sensing lead.

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