CN202330451U - Revolving speed measuring device - Google Patents
Revolving speed measuring device Download PDFInfo
- Publication number
- CN202330451U CN202330451U CN2011204552830U CN201120455283U CN202330451U CN 202330451 U CN202330451 U CN 202330451U CN 2011204552830 U CN2011204552830 U CN 2011204552830U CN 201120455283 U CN201120455283 U CN 201120455283U CN 202330451 U CN202330451 U CN 202330451U
- Authority
- CN
- China
- Prior art keywords
- revolving speed
- pulse
- measuring device
- speed measuring
- time
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to a revolving speed measuring device. The revolving speed measuring device is characterized in that a revolving speed sensor is arranged on a shaft to be measured and a workpiece driven by the shaft; a pulse output end of the revolving speed sensor is connected with a pulse input end of a component with the function of calculating time between two input pulses; the component converts the revolving speed of the shaft according to the time between the two input pulses; and the component with the function of calculating time between the two input pulses is a computer, particularly the computer in a frequency converter or a soft starter.
Description
Affiliated technical field
The utility model relates to a kind of rotation-speed measuring device, especially attendes the measurement mechanism of time definite axle rotating speed between institute's sensor installation output pulse according to axle.
Background technology
At present; Known axle rotating speed measurement method is for installing the scrambler of several thousand pulses of output of whenever turning around on axle; The scrambler output terminal is connected with pulse-scaling circuit (like the single-chip microcomputer external pulse) input end, and pulse-scaling circuit is according to a period of time inner encoder output number of pulses conversion shaft rotating speed; If but axle goes up an installation and whenever turn around and only export the sensor of 1 pulse, it is few that a period of time inner sensor produces number of pulses, and axle tachometric survey error is very high.Be respectively 2830 commentaries on classics/min, 1400 commentaries on classics/min, 960 commentaries on classics/min like 2 utmost points, 4 utmost points, 6 utmost point asynchronous motor rated speeds; Per second changeed respectively about 47.17 weeks, 23.33 weeks, 16 weeks under 2 utmost points, 4 utmost points, 6 utmost point asynchronous motor rated speeds; Gate time was got 1 second, and maximum relative error is respectively about 2.12%, 4.29%, 6.25% under 2 utmost points, 4 utmost points, 6 utmost point asynchronous motor rated speeds.
The utility model content
In order when axle rotating speed hundreds of commentariess on classics/min is above, to obtain higher rotation speed measuring accuracy and very fast rotating speed response speed with straightforward procedure, the utility model proposes to be connected at the pulse input end of a speed probe being installed, speed probe pulse output end and inside are had the components and parts (like single-chip microcomputer) of time between two input pulses of calculating on the workpiece that axle or axle are driven, components and parts according to two input pulses between the rotation-speed measuring device of time conversion shaft rotating speed.
The utility model solves the technical scheme that its technical matters adopted
On an axle to be measured or a workpiece that is driven, a speed probe is installed; The speed probe pulse output end is connected with the pulse input end that has the components and parts (like single-chip microcomputer) of time function between two input pulses of calculating, has the rotation-speed measuring device of the components and parts of time function between two input pulses of calculating according to time conversion shaft rotating speed between two input pulses.
With single chip computer measurement 2 utmost points, 4 utmost points, 6 utmost point asynchronous motor rated speeds is example; If the single-chip microcomputer crystal oscillator frequency is 12MHz; Single-chip microcomputer machine cycle frequency is 6MHz; Single-chip microcomputer external pulse input end is received a pulse and is begun inner machine cycle counting, and single-chip microcomputer external pulse input end is received next pulse and finished inner machine cycle counting; During 2 utmost point asynchronous motor rated speeds between two pulses the time be 2.12% second, the machine umber of pulse is about 127199, maximum relative error is 1/127199, the rotating speed response time is 2.12% second; During 4 utmost point asynchronous motor rated speeds between two pulses the time be 4.29% second, the machine umber of pulse is about 257400, maximum relative error is 1/257400, the rotating speed response time is 4.29% second; During 6 utmost point asynchronous motor rated speeds between two pulses the time be 6.25% second, the machine umber of pulse is about 375000, maximum relative error is 1/375000, the rotating speed response time is 6.25% second.
The beneficial effect of the utility model
1 speed probe is installed on a main shaft or a workpiece that is driven just can be obtained higher rotation speed measuring accuracy and very fast rotating speed response speed, cost is low.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is that the last installation of the axle of the utility model speed probe, a speed probe pulse output end are connected synoptic diagram with single-chip microcomputer external pulse input end.
In Fig. 1,1. spool, 2. small magnet, 3. Hall element, 4. direct supply voltage, 5. pull-up resistor, 6. Hall element ground wire, 7. Hall element pulse output line, 8. single-chip microcomputer, 9. single-chip microcomputer external pulse input end, 10. single-chip microcomputer ground wire.
Embodiment
Among Fig. 1; Go up installation small magnet (2) at axle (1); Hall element (3) is installed near small magnet (2), Hall element (3) power supply termination+5V DC voltage (4), Hall element pulse output line (7) and+connect between the 5V DC voltage (4) and draw resistance (5); Hall element ground wire (6) is connected with single-chip microcomputer ground wire (10); Hall element pulse output line (7) is connected with single-chip microcomputer external pulse input end (9), time between single chip computer measurement external pulse input end (9) twice input pulse, conversion shaft (1) rotating speed.
Claims (3)
1. rotation-speed measuring device; It is characterized in that: on an axle to be measured or a workpiece that is driven, speed probe is installed; The speed probe pulse output end is connected with the pulse input end with components and parts of time function between two input pulses of calculating, and said components and parts are according to time conversion shaft rotating speed between two input pulses.
2. a kind of rotation-speed measuring device according to claim 1 is characterized in that: said components and parts with time function between two input pulses of calculating are computing machine.
3. according to claim 1,2 described a kind of rotation-speed measuring devices, it is characterized in that: said computing machine is the computing machine in frequency converter or the soft initiator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204552830U CN202330451U (en) | 2011-11-16 | 2011-11-16 | Revolving speed measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204552830U CN202330451U (en) | 2011-11-16 | 2011-11-16 | Revolving speed measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202330451U true CN202330451U (en) | 2012-07-11 |
Family
ID=46442427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204552830U Expired - Fee Related CN202330451U (en) | 2011-11-16 | 2011-11-16 | Revolving speed measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202330451U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702937A (en) * | 2019-09-24 | 2020-01-17 | 江苏科技大学 | Brushless direct current motor speed measuring device based on single chip microcomputer and using method |
-
2011
- 2011-11-16 CN CN2011204552830U patent/CN202330451U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702937A (en) * | 2019-09-24 | 2020-01-17 | 江苏科技大学 | Brushless direct current motor speed measuring device based on single chip microcomputer and using method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102082535B (en) | Brushless direct current motor speed detector based on hall element and control method thereof | |
| CN106405142A (en) | Device and method for measuring rotational speed ripple and torque ripple of motor | |
| CN205123639U (en) | Micro direct current motor intelligence speed regulator | |
| CN201569663U (en) | Brushless DC motor speed measurement device based on hall element | |
| CN202330451U (en) | Revolving speed measuring device | |
| CN204228735U (en) | Measure the device of motor speed | |
| CN103759869A (en) | Device and method for measuring friction moment of rotary shaft of rotary table | |
| CN103145007A (en) | Numerical-control fiber winding machine control system based on variable-frequency speed regulator | |
| CN207111411U (en) | Intelligent screw pumping system for OFME | |
| CN203933599U (en) | A kind of electric machine controller pulses switch device | |
| CN202502102U (en) | Circuit for detecting rotation speed of machine tool spindle | |
| CN202770850U (en) | Photoelectric geminate transistor digital rotational speed meter provided with scanning-type fan-blades | |
| CN208476951U (en) | A kind of speed probe | |
| CN204008688U (en) | A kind of DC motor speed measurement mechanism based on Magnetic Flux Leakage Inspecting technology | |
| CN203732558U (en) | Three-phase asynchronous motor speed measuring circuit | |
| CN102981015A (en) | Infrared digital speed-detection control system for gear purpose | |
| CN202285021U (en) | Instrument for measuring wheel speed | |
| CN202975036U (en) | Main shaft rotating speed measuring device | |
| CN104007283B (en) | Speed-measuring method and tachometer circuit in a kind of winding motor rotor-resistance starting | |
| CN105186944A (en) | Position detection method of inner and outer rotors of high precision biaxial counter-rotating brushless direct current motor | |
| CN202565110U (en) | Connection structure of speed measuring device and motor applied to electric car | |
| CN201576001U (en) | Model vehicle speed measuring device adopting photoelectric encoder | |
| CN106872165A (en) | A kind of synchronous pulley resetting error measuring means and method | |
| CN202995784U (en) | Novel star wheel counting device | |
| CN105021840A (en) | Method and device for speed detection of counter-rotating brushless direct current motor with high precision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20121116 |