CN203564702U - Treadmill speed measuring device - Google Patents
Treadmill speed measuring device Download PDFInfo
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- CN203564702U CN203564702U CN201320705729.XU CN201320705729U CN203564702U CN 203564702 U CN203564702 U CN 203564702U CN 201320705729 U CN201320705729 U CN 201320705729U CN 203564702 U CN203564702 U CN 203564702U
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- measuring device
- resistance
- speed measuring
- photoelectric encoder
- shaper
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Abstract
A treadmill speed measuring device comprises a photoelectric encoder, a photoelectric isolator and a filtering shaper, wherein the photoelectric encoder, the photoelectric isolator and the filtering shaper are sequentially connected in series. The model of the photoelectric encoder is EPC-755A, the model of the photoelectric isolator is 6N137, and the model of the filtering shaper is 74HC14. A first resistor is connected between the output end of the photoelectric isolator and the input end of the filtering shaper in series, the output end of the first resistor is connected with the ground through a capacitor and a second resistor which are connected in parallel, the input end of the first resistor is connected with a power supply through a third resistor, and the output end of the filtering shaper is connected with a speed regulation PLC. The photoelectric encoder and a treadmill motor are fixed coaxially. By the adoption of the technical scheme, the treadmill speed measuring device is simple in structure, high in measuring accuracy, firm, durable, low in cost and convenient to maintain, and a circuit is high in anti-interference capacity.
Description
Technical field
The utility model relates to a kind of speed measuring device, particularly a kind of speed measuring device of applicable treadmill.
Background technology
Existing treadmill tests the speed and mainly adopts tachometer generator, and a small-sized interchange or dc generator are installed on the axle of asynchronous machine, makes generator and motor synchronous running, the size of its output voltage and the linear direct ratio of the rotating speed of asynchronous machine.By measuring the voltage of generator, just can measure the rotating speed of motor.But there are some problems in this method, such as speed measuring motor is easily aging, along with the variation of time, precision can decline, the output voltage of speed measuring motor belongs to analog signal, and the circuit that need to enter more complicated just can be converted into data signal, is not suitable for the requirement of digital times.
Utility model content
Goal of the invention of the present utility model is that a kind of circuit of design is simple, the digital treadmill speed measuring device that precision is high, and its concrete technical scheme is:
A kind of treadmill speed measuring device, comprise photoelectric encoder, photoisolator and the filter shape device of series connection successively, wherein photoelectric encoder is EPC-755A, photoisolator is 6N137, filter shape device is 74HC14, one first resistance of wherein connecting between photoisolator output and the input of filter shape device, the output of the first resistance is by an electric capacity in parallel and the second resistance eutral grounding, the input of the first resistance connects power supply by the 3rd resistance, the output termination speed setting controller PLC of filter shape device.
Described photoelectric encoder and running machine motor are coaxially fixing.
Adopt technique scheme, not only treadmill tachometer circuit is simple in structure, and certainty of measurement is high, and circuit anti-interference ability is strong, durable, with low cost, is convenient to safeguard.
Accompanying drawing explanation
The circuit diagram of Fig. 1 treadmill speed measuring device;
The specific embodiment
The embodiment setting forth below represents and allows those skilled in the art to put into practice necessary information of the present utility model, and illustrates and put into practice best mode of the present utility model.Once read with reference to the accompanying drawings following description, those skilled in the art just will understand design of the present utility model and will recognize the application of these designs of not illustrating especially herein.Should be appreciated that these designs and application fall into the scope of disclosure and the accompanying claims book.
With reference to the circuit diagram of a kind of treadmill speed measuring device shown in accompanying drawing 1, comprise the photoelectric encoder U1 of series connection successively, photoisolator U2 and filter shape device U3, wherein photoelectric encoder U1 is EPC-755A, by U.S. EP company, produced, have lightweight, volume is little, the advantage of easily installing, employing can guarantee the metal structure of reliably working for many years, there is mounting means flexibly, herein, photoelectric encoder U1 and running machine motor coaxially fixedly mount, photoisolator U2 is 6N137, they are 2 years old, 6 pin are respectively input and output, the 3rd, 5 pin ground connection, 1, 4 pin are vacant, 7, 8 pin meet 5V power supply VCC, between 5 pin and 8 pin, be connected in series capacitor C 1, filter shape device U3 is 74HC14, the input signal slowly changing can be converted to clearly, the output signal of non-jitter, the input of photoisolator U2 output 6 pin and filter shape device U3 ask one first resistance R 1 of connecting, the output of the first resistance R 1 is by a capacitor C 2 in parallel and the second resistance R 2 ground connection, the input of the first resistance R 1 meets power supply VCC by the 3rd resistance R 3, the output termination speed setting controller PLC of filter shape device U3.
Obviously, above-described embodiment is only for the utility model example is clearly described, and is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all embodiments.And these belong to apparent variation that spirit of the present utility model extended out or variation still among protection domain of the present utility model.
Claims (2)
1. a treadmill speed measuring device, it is characterized in that comprising photoelectric encoder, photoisolator and the filter shape device of series connection successively, wherein photoelectric encoder is EPC-755A, photoisolator is 6N137, filter shape device is 74HC14, one first resistance of wherein connecting between photoisolator output and the input of filter shape device, the output of the first resistance is by an electric capacity in parallel and the second resistance eutral grounding, the input of the first resistance connects power supply by the 3rd resistance, the output termination speed setting controller PLC of filter shape device.
2. treadmill speed measuring device as claimed in claim 1, is characterized in that described photoelectric encoder and running machine motor are coaxially fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705729.XU CN203564702U (en) | 2013-11-11 | 2013-11-11 | Treadmill speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320705729.XU CN203564702U (en) | 2013-11-11 | 2013-11-11 | Treadmill speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203564702U true CN203564702U (en) | 2014-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320705729.XU Expired - Fee Related CN203564702U (en) | 2013-11-11 | 2013-11-11 | Treadmill speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203564702U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372444A (en) * | 2015-11-24 | 2016-03-02 | 中国计量学院 | Medical movement flat plate speed calibration device and precision design and calibration method thereof |
| CN109617459A (en) * | 2018-12-28 | 2019-04-12 | 江苏大学 | A kind of permanent magnet synchronous electric motor driving power plate circuit and its design method |
-
2013
- 2013-11-11 CN CN201320705729.XU patent/CN203564702U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372444A (en) * | 2015-11-24 | 2016-03-02 | 中国计量学院 | Medical movement flat plate speed calibration device and precision design and calibration method thereof |
| CN105372444B (en) * | 2015-11-24 | 2019-01-01 | 中国计量学院 | Medical exercise stress speed calibration device and its accuracy Design and calibration method |
| CN109617459A (en) * | 2018-12-28 | 2019-04-12 | 江苏大学 | A kind of permanent magnet synchronous electric motor driving power plate circuit and its design method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HEBEI UNIVERSITY Free format text: FORMER OWNER: CHEN ZHIHUA Effective date: 20140630 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 071000 BAODING, HEBEI PROVINCE TO: 071002 BAODING, HEBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140630 Address after: 071002 East Road, Hebei, Baoding No. 54 Patentee after: Hebei University Address before: 071000 Department of physical education, medical school, Hebei University, 342 East Yuhua Road, Baoding, Hebei Patentee before: Chen Zhihua |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20141111 |
|
| EXPY | Termination of patent right or utility model |