DE29706645U1 - Devices for measuring the step frequency / number of steps on the treadmill ergometer - Google Patents

Description

File name: \\NTSERVERWERWALTU\Privat HarreAPatentamtNSchrittfrequenz Gebrauchsmuster 980611 Korrektur.doc

Date: 11.06.1998

Author: Franz Harrer

Distribution: Patent Office Munich

Utility model application for devices for measuring step frequency / number of steps on a treadmill ergometer

Reference number 297 06 645.5

Description (introduction):

When walking and running on a treadmill ergometer, in addition to the time and the load parameters (speed, incline angle), the following values are also very interesting and important:

1. Step frequency

2. Stride length

3. Number of steps

4. Jumping force (weight) of the runner on the running belt

5. Jump force (moment) by the runner from the running belt

6. Duration of "ground contact" and duration of the jump phase (air dwell time)

These values are primarily important in rehabilitation, sports medicine and performance diagnostics

Devices/ functional principle (introduction):

A specific speed can be preselected via a keyboard ( Fig. 1: Pos. 8 ).

An MCU control electronics (Fig. 1: Pos. 9) passes the command (the signal) on to the power unit (Fig. 1: Pos. 4).

The power unit (Fig. 1: Pos. 4 ) controls the drive motor (Fig. 1: Pos. 1 ) at a specific speed.

The running belt is driven by a drive motor (Fig. 1: Pos. 1).

Step frequency Gebrgucrnmurter ;9iB06»1»Korfel<tiir,cj$c>

Reference number 297 06 645.5 Annex 2

Legend to Annex 1 Figure 1:

position Devices / Designations 1 Drive motor for treadmill ergometer 2 Speedometer 3 Motor cable 4 Power unit 5 Mains supply cable for power unit 6 Signal line from speedometer 7 Control line from MCU control electronics to power unit 8th Keyboard/Display 9 MCU control electronics 10 Measuring resistor in the mains supply for the power section 11 Measuring resistance in the motor cable

Claims (2)

>· · «ff &iacgr; * » t step frequency Gelyauchamu9ter^6i!^i^ktur4yy^X)6.98 Page Utility model claim 1. The protection claim relates to the invention that through the arrangement of the devices shown in Figure 1 , drive motor (Fig. 1: Item 1), power unit (Fig. 1: Item 4), measuring resistor (Fig. 1: Item 10 and Item 11), speedometer (Fig. 1: Item 2) and control electronics (Fig. 1 : Item 9), information is obtained about parameters of step frequency, step length, number of steps, jumping force (weight) by the runner onto the running belt, jumping force (moment) by the runner from the running belt, duration of "ground contact" and duration of the jumping phase (air dwell time). 2. Arrangement of the motor control electronics (Fig. 1: Pos. 4) or via a measuring resistor (Fig. 1: Pos. 10 and Pos. 11) in the motor cable (Fig. 1: Pos. 3) or in the mains cable (Fig. 1: Pos. 5) for the power section which records the current consumption. Depending on the mechanical load (weight load) from the rotor, the drive motor (Fig. 1: Pos. 1) has a different current consumption. More options: a) Arrangement of the speedometer (Fig. 1: Pos. 2 ), which records the small speed fluctuations that occur due to the different loads, which are evaluated by the electronics. b) Arrangement of pressure measuring sensors or switches on the running surface or on the base of the treadmill which measure the change in the weight load. c) Arrangement of light barriers or lasers positioned just above the running belt and accurately measuring the movement of the feet. d) Arrangement of a microphone which converts the sound waves generated during the jump into electrical impulses. . ., . _ ._ e) Arrangement of an ultrasonic sensor or an infrared sensor close to the ground at the front or back, which measures the distance to the feet. Since the distance changes significantly with each step, software, for example, can clearly recognize and display this as a step.