DE102009003734B4 - Distance measuring device for training devices - Google Patents

Abstract

Main claim: Distance measuring device for training control on training devices with at least one movable component with a measuring device for detecting the distance covered by the movable component, the measuring device consisting of an ultrasonic transmitter and an ultrasonic receiver and the ultrasonic transmitter can be connected to the movable component and The ultrasound receiver is fixedly arranged on the training device, characterized in that a first transmission element (10) and a further transmission element (11) are provided as the ultrasound transmitter that the difference between the distance L1 from the first transmitter element (10) to the receiver element (12) and the distance L2 from the further transmitter element (11) to the receiver element (12) is measured.

Description

The invention relates to a Wegmessvorrichtung for training control training equipment with at least one movable component with a measuring device for detecting the distance traveled by the movable component, wherein the measuring device consists of an ultrasonic transmitter and an ultrasonic receiver and the ultrasonic transmitter with the movable component is connectable and the ultrasound receiver is stationarily mounted on the exerciser.

State of the art

Training devices are used to strengthen and build up the musculoskeletal system of a person and are a necessary tool to systematically and specifically build the muscles of individual body regions. This is particularly useful for athletes who want to build their muscles in a controlled manner or those who want to re-strengthen in the rehabilitation area, for example by a trauma or weakened by a disease muscle.

The training person has to perform a defined movement to train the corresponding muscle parts with certain body parts. The movement is thereby accomplished by performing the movement against a corresponding resistance. This resistance may be provided, for example, in the form of one or more weights, one or more springs, or a hydraulic system.

In the European patent application EP 0691140 A1 a device is presented which provides feedback to the user about his training on a weight lifting device. The apparatus has means for determining the number of lifted weights, measuring the travel of the lifted weights, and electronic means for receiving, displaying, and storing this data. Further, the device can determine the speed by which the weights are lifted. For measuring exposure photosensitive and magnetic sensors are proposed.

Furthermore, from the WO 2003 082 411 A2 a training device with a Wegmessvorrichtung known. The path measuring device is configured such that a transmitter is arranged on the movable component of the training device, wherein a receiver is fixed to the stationary component of the training device. The moveable component on the exercise machines is the stack of weight plates that is to be raised and lowered by a user's motion. The transmitter is at the same time a plug-in pin for selecting the appropriate number of weight plates that are to be raised and lowered. By an ultrasonic measurement, the corresponding distance between the receiver and the transmitter is detected and it can be determined which weight choice has been made. It can also be determined which distance the moving component travels with respect to the fixed receiver.

Disadvantages of the prior art

In practice, in such devices, which have formed the plug pin as an ultrasonic transmitter, the disadvantages that the device can not distinguish whether actually a training movement is exercised or whether the pin is placed differently. Misuse and misinterpretations are the result.

In particular, in such training devices, in addition to the actual selection of the weight plates by setting the pin additionally provide adjusting elements with which a fine adjustment is possible, such versions are not suitable because they do not recognize the additional weights. Already for this reason, bad workload and misinterpretation of the training process may be possible.

Furthermore, misinterpretations of the measuring path occur because temperature changes change the measuring conditions accordingly, so that the device detects different paths for the same distance at different temperatures.

Object of the invention

The object of the invention is to develop a measuring device according to the prior art in such a way that at least one disadvantage of the prior art is avoided.

Solution of the task

The solution of the problem is determined by claim 1.

Advantages of the invention

One of the significant advantages of the invention is that misinterpretations of the measuring device are avoided. Due to the difference measurement, which is determined between a first and a second transmitter, which are respectively arranged on the movable component of the training device, a check of all possible weight settings arises. Therefore, one is Distinguishing possibility between a training movement and a weight selection possible, so that software representation of the corresponding result, for example on a screen, this can spend. Due to the use of two transmitter units, improved noise immunity is provided compared to that known from the prior art.

Another advantage of the invention is that it is very compact and is an integral part of the training device, in which the corresponding transmitter are designed as a plug pin or pins.

The user thus has the opportunity to select the load to be lifted by means of the first pin from a rough selection of weights. In a further step, he has the ability to select the finer divided weights over another pin, so that there is a corresponding total burden. Only when the two transmission units represent the exact same distance over a defined period, the measuring system can assume that the weight adjustment is completed. Thus, then during the movement of the selected weight pact, the distance between the pin, which is provided for the coarse division and / or between the pin, which is responsible for the fine classification of the weights, are measured. This provides redundancy in the measuring system so that if a transmitter fails, the error message is output precisely.

Further advantageous embodiments will become apparent from the following description, the claims and the drawings:

drawing

It shows:

1 A perspective view of a training device, as well as the device for measurement on the training device.

Description of an embodiment

In 1 is schematically a training device 1 shown. This consists of a fixed component 2 , the frame and at least one movable component 3 , the weights. A user not shown in the drawings pulls on a device 4 in the direction of the arrow 5 and thereby moves against gravity the movable component 3 , The alternating movement necessary for the training takes place from a raised position of the weights (such as in 1 shown) to a position which is higher than the position shown.

The movable component consists of a first weight stack with respective weight plates 3.1 and another weight stack with other weight plates 3.2 , The first weight stack will be on a first lead 7 guided, wherein the second weight stack on a second guide 8th to be led. The first weight stack is used to roughly set the total weight to be lifted, with the further weight stack allowing a fine adjustment in terms of weight. The selection of the weights to be lifted takes place - as is known from the prior art - by inserting a plug pin 6 respectively. 9 , All over the respective pins 6 . 9 arranged weight plates 3.1 and 3.2 are raised, the rest remain in their rest position.

In order to detect and record this movement, there is a first transmitting element 10 on the first pin 6 (the first weight plates 3.1 assigned) arranged. Another transmission element 11 is at the other pin 9 (the other weight plates 3.2 assigned). A receiver element 12 is at the fixed component 2 of the training device 1 arranged. The transmission elements 10 . 11 are preferably ultrasonic transmitter and powered by a cable with the necessary energy. Alternatively, the transmitting elements 10 . 11 be designed battery or battery powered. The receiver element 12 receives the from the transmitting elements 10 . 11 emitted signals.

Functionality:

The user selects by inserting the plug pins 6 . 9 the number of weight plates to be lifted 3.1 respectively. 3.2 , The first weight plates 3.1 are the main weights, the other weight plates 3.2 , the additional weights for the fine adjustment. The evaluation and recording device (not shown in detail) connected to the training device records the movement of the transmission elements 10 . 11 or the pins 6 . 9 on, since the transmitting signals from the receiver element 12 be received. Preferably, both transmit elements 10 . 11 on different channels, so from the receiver element 12 can be detected from which transmitting element 10 . 11 the signal comes.

In order to determine whether it is a setting of the weights or actually a lifting of the weights, first of the evaluation and recording device - preferably in the multiplex method - the difference L3 from the relative position of the first pin 6 and the other pin 9 certainly. The location of the respective plug pins 6 . 9 is by the distance of the pin to the receiver element 12 determined and is for the first pin 6 with L1 and for the further plug pin 9 labeled L2.

If the difference L3 = L1 - L2 is not constant, then it can be concluded that the setting of the weights is in progress. If this is constant, then it can be concluded that the adjustment is completed.

For the actual training operations, the position L1 or / and L2 is now measured and recorded. This corresponds to the respective position of the movable component 3 relative to the receiver element 12 ,

Thus, a certain distinction between the actual exercise movement and weight selection is given. To ensure a higher redundancy of the measurement results, both measured values can be recorded.

In addition, the dependence of the transit time measurement by using a temperature measuring sensor during the distance measurement is minimized.

LIST OF REFERENCE NUMBERS

1

exerciser

2

fixed component

3

movable component

3.1

first weight stack

3.2

another weight stack

4

Facility

5

arrow

6

first plug pin

7

first guide

8th

second leadership

9

another plug pin

10

first transmission element

11

second transmission element

12

receiver element

L1, L2, L3

distance

Claims (5)

Path measuring device for training control training equipment with at least one movable component with a measuring device for detecting the distance covered by the movable component, wherein the measuring device consists of an ultrasonic transmitter and an ultrasonic receiver and the ultrasonic transmitter is connected to the movable component and the ultrasonic receiver stationary is arranged on the training device, characterized in that as the ultrasound transmitter a first transmitting element ( 10 ) and another transmitting element ( 11 ) are provided, that as ultrasonic receiver a receiver element ( 12 ) on the non-moving component ( 2 ) is arranged such that the difference of the distance L1 from the first transmitting element ( 10 ) to the receiver element ( 12 ) and the distance L2 from the further transmitting element ( 11 ) to the receiver element ( 12 ) is measured. Position measuring device according to claim 1, characterized in that the transmitting element ( 10 ) as a plug pin ( 6 ) is trained. Position measuring device according to claim 1, characterized in that the further transmitting element ( 11 ) as another plug pin ( 9 ) is trained. Position measuring device according to claim 3, characterized in that the further plug pin ( 9 ) for selecting a further weight stack ( 3.2 ) is provided. Position measuring device according to at least one of the preceding claims, characterized in that the transmitting elements ( 10 . 11 ) on different channels.

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