CN2909262Y - DC dynamo tachometer - Google Patents
DC dynamo tachometer Download PDFInfo
- Publication number
- CN2909262Y CN2909262Y CN 200620104932 CN200620104932U CN2909262Y CN 2909262 Y CN2909262 Y CN 2909262Y CN 200620104932 CN200620104932 CN 200620104932 CN 200620104932 U CN200620104932 U CN 200620104932U CN 2909262 Y CN2909262 Y CN 2909262Y
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- pin
- motor
- processing unit
- central processing
- driver circuit
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Abstract
The utility model relates to a measuring device for measuring motor rotation speed, including a CPU, a display driver circuit and a display device that are connected in turn. The DC motor controller sends the output pulse signal to the CPU, which can calculate the actual motor rotation speed by detecting the frequency of the signal pulse and then convert the actual motor rotation speed into a BCD code to output the display driver circuit, which amplifies the BCD code and transmits to the display device to display. Therefore the utility model is not only inexpensive, leaving out a generator for measuring the speed, but also the structure is more simple, with greatly improved reliability, enhancing the accuracy of the rotation speed meter.
Description
Technical field
The utility model relates to the instrument field, especially relates to a kind of measurement mechanism of measuring motor speed.
Background technology
The measurement of traditional dc motor speed is measured by sillometer, this tachometer gage not only needs to increase tech-generator provides tach signal, but also on motor shaft, paste reflective sheeting, utilize the light of reflection to carry out to record rotating speed of motor after the signal Processing conversion again, its circuit part mainly comprises display circuit, light signal reception and processing section and drive signal part, this tachometer gage costs an arm and a leg, and measure also inconvenient, also wear and tear easily during reflective sheeting uses and come off, change also inconvenience, bring inconvenience for user's use, therefore, this class measurement mechanism is backward in technique, complex structure, accuracy are not high, can't measure rotating speed of motor reliably.
Summary of the invention
It is a kind of cheap that the utility model provides, and can accurately measure motor speed, simple in structure, the dc motor speed table that stability is high mainly is to solve prior art medium speed table to use inconvenience, needs to increase tech-generator, measure inaccurate, the technical matters that reliability is not high.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: the dc motor speed table, it is characterized in that it comprises the central processing unit that links to each other successively, display driver circuit and display device, described central processing unit one end connects DC motor controller, DC motor controller is sent the pulse signal of output into central processing unit, described central processing unit is calculated the actual speed of motor by the frequency meter that detects pulse signal, then the actual speed of motor is changed into binary-coded decimal and export to display driver circuit, flow to display device after described display driver circuit amplifies binary-coded decimal and show.
As preferably, described central processing unit mainly adopts 8 singlechip chip U1 to realize, between described central processing unit and DC motor controller, be connected with three pin wire jumper J1,1 pin of J1 meets direct supply VC, a road of 2 pin of J1 connect the direct current generator signal input part, another road connects 8 pin of U1, the 3 pin ground connection of J1.
As preferably, described display driver circuit mainly is made of single-chip microcomputer U2 and U3,1,3,5,9,11,13 pin of U2 connect 19,18,17,16,15,14 pin of U1 respectively, the 7 pin ground connection of U2,14 pin of U2 connect direct supply, and 1,3 pin of described U3 connect 13,12 pin of U1 respectively, the 7 pin ground connection of U3,5,9,11,13 pin of U3 connect 3,6,7,9 pin of U1 respectively, and 14 pin of U3 connect direct supply.
As preferably, described display device mainly is made of charactron U5, the 1-6 pin of described U5 links to each other with 2,4,6,8,10,12 of U2 respectively, and 7,8 pin of U5 link to each other with 4,2 pin of U3 respectively, and the 9-12 pin of U5 links to each other with 6,8,10,12 pin of U3 respectively.
As preferably, described display driver circuit is a led drive circuit, and described display device is the digital display tube of LED.
The beneficial effects of the utility model are: device therefor is cheap, does not need to provide in addition tech-generator, and simple in structure, reliability and stability improve greatly, has strengthened the practicality of tachometer gage greatly.
Description of drawings
Fig. 1 is a kind of circuit structure block diagram of the present utility model;
Fig. 2 is a kind of circuit theory diagrams of the present utility model.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the dc motor speed table of present embodiment, as shown in Figure 1, it comprises the central processing unit 1 that links to each other successively, display driver circuit 2 and display device 3, as shown in Figure 2,8 singlechip chip U1 of described central processing unit 1 main employing realize, its end connects DC motor controller, between described central processing unit 1 and DC motor controller, be connected with connector J1,1 pin of J1 meets direct supply VC, a road of 2 pin of J1 connect the direct current generator signal input part, and another road connects 8 pin of U1, the 3 pin ground connection of J1.Display driver circuit 2 mainly is made of single-chip microcomputer U2 and U3,1 of U2,3,5,9,11,13 pin meet 19 of U1 respectively, 18,17,16,15,14 pin, the 7 pin ground connection of U2,14 pin of U2 connect direct supply, 1 of described U3,3 pin meet 13 of U1 respectively, 12 pin, the 7 pin ground connection of U3,5 of U3,9,11,13 pin meet 3 of U1 respectively, 6,7,9 pin, 14 pin of U3 connect direct supply, display device (3) mainly is made of charactron U5, the 1-6 pin of described U5 respectively with 2 of U2,4,6,8,10,12 link to each other, 7 of U5,8 pin respectively with 4 of U3,2 pin link to each other, the 9-12 pin of U5 respectively with 6 of U3,8,10,12 pin link to each other, and display driver circuit 2 adopts led drive circuit, and described display device 3 adopts the digital display tube of LED.
The course of work: DC motor controller is sent the pulse signal of output into central processing unit 1, described central processing unit 1 is calculated the actual speed of motor by the frequency meter that detects pulse signal, then the actual speed of motor is changed into binary-coded decimal and export to display driver circuit 2, flow to display device 3 after described display driver circuit 2 amplifies binary-coded decimal and show.
Claims (5)
1. dc motor speed table, it is characterized in that it comprises the central processing unit (1) that links to each other successively, display driver circuit (2) and display device (3), described central processing unit (1) one end connects DC motor controller, DC motor controller is sent the pulse signal of output into central processing unit (1), described central processing unit (1) is calculated the actual speed of motor by the frequency meter that detects pulse signal, then the actual speed of motor is changed into binary-coded decimal and export to display driver circuit (2), flow to display device (3) after described display driver circuit (2) amplifies binary-coded decimal and show.
2. dc motor speed table according to claim 1, it is characterized in that described central processing unit (1) mainly adopts 8 singlechip chip U1 to realize, between described central processing unit (1) and DC motor controller, be connected with connector J1,1 pin of J1 meets direct supply VC, a road of 2 pin of J1 connect the dc brushless motor signal input part, another road connects 8 pin of U1, the 3 pin ground connection of J1.
3. dc motor speed table according to claim 1 and 2, it is characterized in that described display driver circuit (2) mainly is made of single-chip microcomputer U2 and U3,1,3,5,9,11,13 pin of U2 connect 19,18,17,16,15,14 pin of U1 respectively, the 7 pin ground connection of U2,14 pin of U2 connect direct supply, and 1,3 pin of described U3 connect 13,12 pin of U1 respectively, the 7 pin ground connection of U3,5,9,11,13 pin of U3 connect 3,6,7,9 pin of U1 respectively, and 14 pin of U3 connect direct supply.
4. dc motor speed table according to claim 1, it is characterized in that described display device (3) mainly is made of charactron U5, the 1-6 pin of described U5 links to each other with 2,4,6,8,10,12 of U2 respectively, 7,8 pin of U5 link to each other with 4,2 pin of U3 respectively, and the 9-12 pin of U5 links to each other with 6,8,10,12 pin of U3 respectively.
5. according to claim 1 or 4 described dc motor speed tables, it is characterized in that described display driver circuit (2) is a led drive circuit, described display device (3) is the digital display tube of LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104932 CN2909262Y (en) | 2006-06-21 | 2006-06-21 | DC dynamo tachometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620104932 CN2909262Y (en) | 2006-06-21 | 2006-06-21 | DC dynamo tachometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2909262Y true CN2909262Y (en) | 2007-06-06 |
Family
ID=38128479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620104932 Expired - Fee Related CN2909262Y (en) | 2006-06-21 | 2006-06-21 | DC dynamo tachometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2909262Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004166A (en) * | 2010-09-17 | 2011-04-06 | 杭州正强电子技术有限公司 | Measuring device and method of rotating speed of brush motor |
| CN104218870A (en) * | 2013-06-03 | 2014-12-17 | 鸿富锦精密工业(武汉)有限公司 | Motor controller and motor speed control method |
-
2006
- 2006-06-21 CN CN 200620104932 patent/CN2909262Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102004166A (en) * | 2010-09-17 | 2011-04-06 | 杭州正强电子技术有限公司 | Measuring device and method of rotating speed of brush motor |
| CN102004166B (en) * | 2010-09-17 | 2012-05-30 | 杭州正强电子技术有限公司 | Measuring device and method of rotating speed of brush motor |
| CN104218870A (en) * | 2013-06-03 | 2014-12-17 | 鸿富锦精密工业(武汉)有限公司 | Motor controller and motor speed control method |
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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: 20070606 Termination date: 20100621 |