DE3139056A1 - Ergometer having an eddy-current braking device - Google Patents
Ergometer having an eddy-current braking deviceInfo
- Publication number
- DE3139056A1 DE3139056A1 DE19813139056 DE3139056A DE3139056A1 DE 3139056 A1 DE3139056 A1 DE 3139056A1 DE 19813139056 DE19813139056 DE 19813139056 DE 3139056 A DE3139056 A DE 3139056A DE 3139056 A1 DE3139056 A1 DE 3139056A1
- Authority
- DE
- Germany
- Prior art keywords
- ergometer
- current
- rotor
- digital value
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
- G01L3/16—Rotary-absorption dynamometers, e.g. of brake type
- G01L3/22—Rotary-absorption dynamometers, e.g. of brake type electrically or magnetically actuated
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/005—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters
- A63B21/0051—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using eddy currents induced in moved elements, e.g. by permanent magnets
- A63B21/0052—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using electromagnetic or electric force-resisters using eddy currents induced in moved elements, e.g. by permanent magnets induced by electromagnets
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B22/00—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements
- A63B22/06—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement
- A63B22/0605—Exercising apparatus specially adapted for conditioning the cardio-vascular system, for training agility or co-ordination of movements with support elements performing a rotating cycling movement, i.e. a closed path movement performing a circular movement, e.g. ergometers
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2220/00—Measuring of physical parameters relating to sporting activity
- A63B2220/30—Speed
- A63B2220/34—Angular speed
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B23/00—Exercising apparatus specially adapted for particular parts of the body
- A63B23/035—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
- A63B23/04—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
- A63B23/0476—Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs by rotating cycling movement
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Physical Education & Sports Medicine (AREA)
- General Physics & Mathematics (AREA)
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
Description
Ergometer mit einer WirbelstrombremseinrichtungErgometer with an eddy current braking device
Stand der Technik Die Erfindung geht von einem Ergometer mit einer Wirbelstrombremseinrichtung nach der Gattung des Hauptanspruchs aus.PRIOR ART The invention is based on an ergometer with a Eddy current braking device according to the preamble of the main claim.
Es ist schon ein Ergometer mit einer Wirbelstrombremseinrichtung bekannt (DE-GM 75 23 938), die aus einer durch einen Probanden in Umdrehungen versetzten Wirbelstromscheibe und einer daneben angeordneten Permanenmagnetscheibe besteht, an der ein Pendelgewicht befestigt ist. Das Bremsmoment kann dabei durch Veränderung des Abstandes zwischen Wirbelstromscheibe und Permanenmaynetscheibe variiert und der augenblickliche Wert des Bremsmoments angezeigt werden.An ergometer with an eddy current braking device is already known (DE-GM 75 23 938), which are set in revolutions from a test person Eddy current disk and a permanent magnet disk arranged next to it, to which a pendulum weight is attached. The braking torque can be changed by changing the distance between the eddy current disk and the permanent magnet disk varies and the current value of the braking torque can be displayed.
Es ist weiterhin bekannt, eine elektronische Regelung vorzusehen, um die von dem Probanden auEzubringende Leistung unabhängig von der jeweiligen Drehzahl der Wirbelstromscheibe zu machen. Derartige Regelungen bedingen für den Drehmomentaufnehmer Präzisionsbauelemente, das sind beispielsweise ein Dehnungsmeßstreifen-Verstärker oder ein Präzisionspotentiometer, sowie eine aufwendige analoge Regelungstechnik.It is also known to provide an electronic control in order to achieve the power to be produced by the test subject regardless of the respective speed to make the eddy current disk. Such regulations require the torque transducer Precision components, such as a strain gauge amplifier or a precision potentiometer, as well as a complex analog control technology.
Vorteile der Erfindung Das erfindungsgemäße Ergometer mit den kennzeichnenden Merkmalen des Hauptanspruchs hat den Vorteil, daß durch einen Verzicht auf eine Regelungseinrichtung ein einfacher schaltungstechnischer Aufbau erreicht wird. Ein weiterer Vorteil liegt in den niedrigen mechanischen Verlusten des erfindungsgemäßen Ergometers, die dazu führen, daß das Ergometer auch in einem Leistungsbereich unter 50 Watt mit hoher Genauigkeit arbeitet. Ein derartiges Ergometer ist darüber hinaus eichfähig.Advantages of the invention The ergometer according to the invention with the characterizing Features of the main claim has the advantage that by waiving one Control device a simple circuit structure is achieved. A Another advantage is the low mechanical losses of the invention Ergometers, which mean that the ergometer is also in a performance range below 50 watts works with high accuracy. Such an ergometer is also calibratable.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen des im Hauptanspruch angegebenen Ergometers möglich.The measures listed in the subclaims are advantageous Further training and improvements to the ergometer specified in the main claim are possible.
Zeichnung Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung anhand einer Figur dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Figur zeigt ein Blockschaltbild eines erfindungsgemäßen Ergometers.Drawing An embodiment of the invention is shown in the drawing illustrated with the aid of a figure and explained in more detail in the following description. The figure shows a block diagram of an ergometer according to the invention.
Beschreibung der Erfindung Ein erfindungsgemäßes Ergometer ist als Fahrrad-Ergometer ausgebildet, das zwei mit einem Zahnrad 10 fest verbundene Tretkurbeln 11, 12 aufweist, die an ihren freien Enden mit je einem Pedal 13, 14 versehen sind. Das Zahnrad 10 ist über ein Getriebeelement, das ist vorzugsweise ein Zahnriemen 15, und/oder andere Getriebeelemente, wie zum Beispiel Ketten oder dergleichen, formschlüssig mit einem Ritzel 16 verbunden. Mit dem Ritzel 16 ist koaxial ein Wirbelstrom-Rotor 17 fest verbunden. Dem Rotor steht in einem bestimmten Abstand eine Magnetwicklung 18 gegenüber. Rotor 17 und Magnetwicklung 18 bilden zusammen eine Wirbelstrombremseinrichtung 19 für das Ergometer.Description of the invention An inventive ergometer is as Bicycle ergometer designed, the two with a gear 10 firmly connected cranks 11, 12, which are each provided with a pedal 13, 14 at their free ends. The gear 10 is via a gear element, which is preferably a toothed belt 15, and / or other gear elements, such as chains or the like, positively connected to a pinion 16. With the pinion 16 is a coaxial Eddy current rotor 17 firmly connected. A magnet winding stands at a certain distance from the rotor 18 opposite. Rotor 17 and magnet winding 18 together form an eddy current braking device 19 for the ergometer.
Zur Ansteuerung der Bremseinrichtung 19 sind folgende Baueinheiten vorgesehen. Eine digitale Einstellvorrichtung 25, zum Beispiel eine Tastaturvorrichtung, steht unmittelbar und eine wahlweise vorgesehene analoge Einstellvorrichtung 26 über einen Analog-Digitalwandler 27 mit einem ersten Eingang 28 einer Rechner- und Prozessorschaltung 29 in Verbindung. Ein zweiter Eingang 30 der Rechner- und Prozessorschaltung 29 ist mit einem Drehzahlaufnehmer 31 verbunden. Ein erster Ausgang 32 der Rechner-und Prozessorschaltung steht über einen Analog-Digitalwandler 33 und einen Verstärker 34 mit Konstantstrom-Ausgang mit der Magnetwicklung 18 in Verbindung. Ein zweiter Ausgang 35 der Rechner- und Prozessorschaltung 29 ist über eine logische Verknüpfungsschaltung 36 mit einer digitalen Anzeigevorrichtung 37 zum Anzeigen der von dem Probanden aufgebrachten Leistung P verbunden.The following structural units are used to control the braking device 19 intended. A digital setting device 25, for example a keyboard device, stands immediately and an optionally provided analog adjustment device 26 via an analog-to-digital converter 27 with a first input 28 of a computer and Processor circuit 29 in connection. A second input 30 of the computer and processor circuit 29 is connected to a speed sensor 31. A first output 32 of the computer and Processor circuit is available via an analog-to-digital converter 33 and an amplifier 34 with constant current output connected to the magnet winding 18. A second Output 35 of the computer and processor circuit 29 is via a logic combination circuit 36 with a digital display device 37 for displaying the data from the test subject applied power P connected.
Das vorstehend beschriebene Ergometer funktioniert folgendermaßen.The ergometer described above works as follows.
An der digitalen Einstellvorrichtung 25 oder an der wahlweise vorhandenen analogen Einstellvorrichtung 26 wird die von dem Probanden aufzubringende Leistung P eingestellt, wodurch dem ersten Eingang 28 der Rechner- und Prozessorschaltung 29 ein dieser Leistung entsprechender Digitalwert D1 zugeführt wird. Der Drehzahlaufnehmer 31 liefert an den zweiten Eingang der Rechner- und Prozessorschaltung einen der augenblicklichen Drehzahl n des Rotors 17 entsprechenden zweiten Digitalwert D2.On the digital setting device 25 or on the optionally available one analog setting device 26 is the power to be applied by the test subject P set, whereby the first input 28 of the computer and processor circuit 29 a digital value D1 corresponding to this power is supplied. The speed sensor 31 supplies one of the at the second input of the computer and processor circuit Second digital value D2 corresponding to the instantaneous speed n of the rotor 17.
Die Rechner- und Prozessorschaltung 29 enthält einen digitalen Speicher, das ist vorzugsweise eine PROM-(Programmable-Read-Only-Memory-) Schaltung, in der die tür den betreffenden Wirbelstrombremsentyp charakteristische Abhängigkeit des Drehmoments Md der Bremseinrichtung 19 von dem durch die Magnetwicklung 18 fließenden Bremsstrom IE und von der Drehzahl n des Rotors 17 in "tabellarischer" Form eingespeichert ist.The computer and processor circuit 29 contains a digital memory, this is preferably a PROM (Programmable Read Only Memory) circuit in which the characteristic dependency of the eddy current brake type in question Torque Md of the braking device 19 from that flowing through the magnet winding 18 Braking current IE and the speed n of the rotor 17 are stored in "tabular" form is.
Die Rechner- und Prozessorschaltung ermittelt aus der augenblicklichen Drehzahl n bzw. dem zweiten Digitalwert D2 des Rotors 17 und dem vorgegebenen Leistungs-Sollwert P bzw. dem ersten Digitalwert D1 anhand der Beziehung P = Md 2x . n das erforderliche Drehmoment Md für die Bremseinrichtung. Aufgrund des Drehmoments Md ermittelt dann die Rechner- und Prozessorschaltung 29 anhand der gespeicherten Tabelle den dritten Digitalwert D3, der dem Strom IE entspricht und von dem Drehmoment Md und der Drehzahl n abhängt.The computer and processor circuit determined from the instantaneous Speed n or the second digital value D2 of the rotor 17 and the predetermined power setpoint P or the first digital value D1 based on the relationship P = Md 2x. n the required Torque Md for the braking device. Then determined on the basis of the torque Md the computer and processor circuit 29 based on the stored table the third Digital value D3, which corresponds to the current IE and of the torque Md and the speed n depends.
Der derart ermittelte Stromwert liegt dann an dem ersten Ausgang 32 der Rechner- und Prozessorschaltung 29in orm eines HinSirkodes vor, der mittels des Digital-AnalocgwandLers 33 in einen analogen Stromwert umgewandelt wird. In dern dem Digital-Analogwandler nachgeschalteten Verstärker 34 wird ein dem Stromwert entsprechender Konstantstrom IE gebildet, der die Magnetwicklung 18 speist.The current value determined in this way is then at the first output 32 the computer and processor circuit 29 in the form of a HinSirkodes, which by means of of the digital-to-analog converter 33 is converted into an analog current value. In The amplifier 34 connected downstream of the digital-to-analog converter is a value of the current corresponding constant current IE is formed, which feeds the magnet winding 18.
An dem Ausgang 35 gibt die Rechner- und Prozessorschaltung 29 eine der jeweiligen Augenblicksleistung entsprechenden Digitalwert D4 ab, der über die logische Verknüpfungsschaltung 36 eine Anzeigevorrichtung 37, das ist vorzugsweise ein LCD- oder LED-Display, ansteuert.At the output 35, the computer and processor circuit 29 is a the digital value D4 corresponding to the respective instantaneous power, which is determined by the logic combination circuit 36 a display device 37, that is preferably an LCD or LED display.
Die Anzeigevorrichtung zeigt dann den von dem Probanden augenblicklich erzeugten Leistungswert an.The display device then shows that of the test subject instantly generated performance value.
Im weiteren Programma,blauf kontrolliert die Rechner-und Prozessorschaltung 29 die von dem Probanden augenblicklich erzeugte Drehzahl n und ermittelt nach der oben erläuterten Vorschrift den erforderlichen Bremsstrom entsprechend dem vorgegebenen Leistungs-Sollwert.In the further program, the computer and processor circuit is controlled 29 the speed n currently generated by the test person and determined according to the the regulation explained above, the required braking current according to the specified Power setpoint.
Die vorstehend erwähnte Anzeigevorrichtung kann außer der Augenblicksleistung auch die Drehzahl, die Arbeit, die Uhrzeit usw. anzeigen.The above-mentioned display device can except the instantaneous power also show the speed, the work, the time, etc.
Die Werte in der Rechner- und Prozessorschaltung können ferner über eine sogenannte serielle Schnittstellenanordnung 40 mit einer elektronischen Datenverarbeitungseinrichtung gekoppelt werden, wobei die Formatierung vorzugsweise die Bedingungen der CCITT-Norm V 24 erfüllt. Die Datenverarbeitungseinrichtung kann dann in Dialog mit dem Ergometer treten.The values in the computer and processor circuit can also be accessed via a so-called serial interface arrangement 40 with an electronic data processing device be coupled, the formatting preferably complying with the conditions of the CCITT standard V 24 fulfilled. The data processing device can then interact with the ergometer step.
Zum Aufbau der Rechner- und Prozessorschaltung 29 eignen sich vorzugsweise integrierte Bausteine der Serie 6800.For the construction of the computer and processor circuit 29 are preferably suitable integrated modules of the 6800 series.
LeerseiteBlank page
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813139056 DE3139056A1 (en) | 1981-10-01 | 1981-10-01 | Ergometer having an eddy-current braking device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19813139056 DE3139056A1 (en) | 1981-10-01 | 1981-10-01 | Ergometer having an eddy-current braking device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE3139056A1 true DE3139056A1 (en) | 1983-04-21 |
DE3139056C2 DE3139056C2 (en) | 1991-02-21 |
Family
ID=6143149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19813139056 Granted DE3139056A1 (en) | 1981-10-01 | 1981-10-01 | Ergometer having an eddy-current braking device |
Country Status (1)
Country | Link |
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DE (1) | DE3139056A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3315441A1 (en) * | 1983-04-28 | 1984-11-15 | Keiper Dynavit GmbH & Co, 6750 Kaiserslautern | ERGOMETER WITH A BURST CURRENT BRAKE THAT WORKS AS A LOADING DEVICE |
EP0131088A2 (en) * | 1983-07-08 | 1985-01-16 | Combi Co., Ltd. | Eddy current brakes, loading devices and ergometers |
EP0268740A2 (en) * | 1986-11-28 | 1988-06-01 | Robert Bosch Gmbh | Torque measuring device |
DE3710842A1 (en) * | 1985-10-02 | 1988-10-20 | Fichtel & Sachs Ag | Electromagnetic brake arrangement, in particular for ergometers |
EP0422325A1 (en) * | 1989-10-07 | 1991-04-17 | Combi Corporation | Method of and apparatus for measuring instantaneous power |
DE4118082C1 (en) * | 1991-06-01 | 1993-03-04 | Christoph Dr. 6750 Kaiserslautern De Irmler | Producing dynamic movement resistances in e - using brake with braking disc and control comprising force and RPM pick=ups, computer and braking force intensifier |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010003344A1 (en) | 2010-03-26 | 2011-09-29 | Franz Harrer | Ergometry or training arrangement for use by patient to perform e.g. medical activity, has electronic unit characterizing measuring- and/or training- and/or environment- boundary conditions and estimating rating |
DE202010004244U1 (en) | 2010-03-26 | 2011-06-09 | Harrer, Franz, 83346 | Acquisition and storage of attribute information in association with diagnostic and vital parameter data in ergometry, diagnostic, therapeutic and training equipment, in particular ergometers and exercise machines |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7523938U (en) * | 1975-07-26 | 1976-01-29 | Fa. Heinz Kettler, 4763 Ense | Bicycle ergometer |
-
1981
- 1981-10-01 DE DE19813139056 patent/DE3139056A1/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7523938U (en) * | 1975-07-26 | 1976-01-29 | Fa. Heinz Kettler, 4763 Ense | Bicycle ergometer |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3315441A1 (en) * | 1983-04-28 | 1984-11-15 | Keiper Dynavit GmbH & Co, 6750 Kaiserslautern | ERGOMETER WITH A BURST CURRENT BRAKE THAT WORKS AS A LOADING DEVICE |
US4576051A (en) * | 1983-04-28 | 1986-03-18 | Keiper Dynavit Gmbh & Co. | Ergometer having an eddy current brake serving as a loading device |
EP0131088A2 (en) * | 1983-07-08 | 1985-01-16 | Combi Co., Ltd. | Eddy current brakes, loading devices and ergometers |
EP0131088A3 (en) * | 1983-07-08 | 1986-05-28 | Combi Co., Ltd. | Eddy current brakes, loading devices and ergometers |
EP0379227A2 (en) * | 1983-07-08 | 1990-07-25 | Combi Co., Ltd. | Method of obtaining optimum load value for a user of an exercise device |
EP0379227A3 (en) * | 1983-07-08 | 1990-11-07 | Combi Co., Ltd. | Method of obtaining optimum load value for a user of an exercise device |
DE3710842A1 (en) * | 1985-10-02 | 1988-10-20 | Fichtel & Sachs Ag | Electromagnetic brake arrangement, in particular for ergometers |
EP0268740A2 (en) * | 1986-11-28 | 1988-06-01 | Robert Bosch Gmbh | Torque measuring device |
EP0268740A3 (en) * | 1986-11-28 | 1989-08-09 | Robert Bosch Gmbh | Torque measuring device |
EP0422325A1 (en) * | 1989-10-07 | 1991-04-17 | Combi Corporation | Method of and apparatus for measuring instantaneous power |
DE4118082C1 (en) * | 1991-06-01 | 1993-03-04 | Christoph Dr. 6750 Kaiserslautern De Irmler | Producing dynamic movement resistances in e - using brake with braking disc and control comprising force and RPM pick=ups, computer and braking force intensifier |
Also Published As
Publication number | Publication date |
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DE3139056C2 (en) | 1991-02-21 |
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