CN202770457U - Rotary transformer angle code converter - Google Patents
Rotary transformer angle code converter Download PDFInfo
- Publication number
- CN202770457U CN202770457U CN 201220488689 CN201220488689U CN202770457U CN 202770457 U CN202770457 U CN 202770457U CN 201220488689 CN201220488689 CN 201220488689 CN 201220488689 U CN201220488689 U CN 201220488689U CN 202770457 U CN202770457 U CN 202770457U
- Authority
- CN
- China
- Prior art keywords
- sine
- gate circuit
- cosine
- output terminal
- rotary transformer
- 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
Landscapes
- Analogue/Digital Conversion (AREA)
Abstract
The utility model provides a rotary transformer angle code converter comprising a sine and cosine demodulator, a positive taking device, a first XOR gate circuit, a second XOR gate circuit, a large and small sorting switch, a comparator, an A/D converter and a table memory. According to the rotary transformer angle code converter of the utility model, a rotary transformer signal conversion process is simplified, a computer is replaced by the XOR gate circuits to carry out solution, and high three position is directly extracted from sine and cosine signals without adding any hardware. The rotary transformer angle code converter has the advantages of simple system, direct viewing, reliability, and small size, is suitable for an inertial product with low speed rotary signal transmission, and is conveniently applied in micro products.
Description
Technical field
The utility model relates to converter, especially a kind of for inertia production rotary transformer corner brace conversion method and according to the corner brace converter of the method.
Background technology
In the prior art, the many employings of rotary transformer corner brace converter are divided into eight intervals to 0 °～360 °, and each interval is 45 °.Angle numerical value adopts 11 binary number value representation, and wherein high one is 180 °, and the Senior Two position is 90 °, and the Senior Three position is 45 °, and Gao Siwei is 25.5 °, and Gao Wuwei is half of high four parallactic angle number of degrees values, the like.Obtain digital angle by machine solution inverse sine (or arc tangent) function, mostly be modularization, volume is larger, can't use at the microminiature product, and cost is expensive.China Patent Publication No. is 201194019, and name is called: rotary transformer detection apparatus; And China Patent Publication No. is: 101281041, and name is called: single power supply CMOS integrated circuit autosyn/rotary transformer-digital conversion technique, it has all adopted modularization, and volume is difficult to do little, can't use at the microminiature product, and cost is high.
The utility model content
For above-mentioned technical matters, the utility model provide a kind of with Senior Three parallactic angle number of degrees value in the situation that do not increase the rotary transformer corner brace converter that hardware directly extracts from cosine and sine signal, be applicable to the microminiature product, cost is low.
To achieve these goals, the technical solution adopted in the utility model is as follows:
A kind of rotary transformer corner brace converter is characterized in that, comprises the sine and cosine detuner, gets positive device, the first NOR gate circuit, the second NOR gate circuit, big or small sorting switch, comparer, A/D converter and table memory;
Described sine and cosine detuner is used for respectively sine, the cosine signal of rotary transformer are carried out demodulation, and directly extracts high one 180 °;
Described the first NOR gate circuit is used for the sine after the demodulation, cosine signal evaluation, extracts 90 ° of Senior Two position;
The described input end of getting positive device is connected with the output terminal of described sine and cosine detuner, and this is got positive device and is used for the sine after the demodulation, cosine voltage signal are just got, and the voltage signal after just will getting is transferred to respectively described comparer and big or small sorting switch;
Described comparer is used for sine, cosine signal after just getting are compared, the output terminal of this comparer is connected with the first input end of described the second NOR gate circuit, the second input end of this second NOR gate circuit is connected with the output terminal of described the first NOR gate circuit, and the output terminal output of described the second NOR gate circuit extracts the signal of 45 ° of Senior Three positions;
The first output terminal of described big or small sorting switch is connected with the input end of described A/D converter, the second output terminal of this size sorting switch is connected with the reference edge of described A/D converter, the output terminal of this A/D converter is connected with the first input end of described table memory, the second input end of this table memory is connected with the output terminal of described the second NOR gate circuit, the low eight bit data of output terminal output of this table memory.
Good effect of the present utility model is:
Rotary transformer corner brace converter of the present utility model is simplified the signals of rotating transformer transfer process, replaces computer-solution with NOR gate circuit, and the Senior Three position is not in the situation that increase hardware and directly extract from cosine and sine signal.Such rotary transformer corner brace converter has that system is simple, directly perceived, reliable, volume is little, the inertia production of the rotating signal transmission that the speed that is applicable to is not high, and be convenient to use at the microminiature product.
Description of drawings
Fig. 1 is principle of work block diagram of the present utility model.
Embodiment
Below in conjunction with specific embodiment the utility model is described in further detail.
Rotary transformer corner brace conversion method, carry out in accordance with the following steps:
(1) demodulation is carried out respectively in sine voltage signal and the cosine voltage signal of rotary transformer output;
(2) 180 °, 90 ° and 45 ° with the Senior Three position extract from sine voltage signal and cosine voltage signal successively;
(3) voltage signal of input is got and carried out just afterwards big or small sorting;
(4) voltage signal after the big or small sorting is carried out analog/digital signal conversion, obtain the digital signal of sinusoidal and cosine voltage;
(5) sinusoidal voltage that obtains is obtained the digital signal of an angle tangent numerical value between 0～45 ° divided by cosine voltage;
(6) according to the tangent numerical value of trying to achieve, compare with the data in the table memory, obtain 0～45 ° low eight digit number word signal;
(7) Senior Three position and low eight are exported together to host computer and carry out corner brace and resolve.
In step (1) and (2), the offset of sinusoidal voltage signal carries out demodulation, directly judges the quadrant that sine voltage signal is positioned at, if the deflection angle of rotary transformer is positioned at third quadrant or fourth quadrant, then directly extracts high one 180 °;
Sine voltage signal and cosine voltage signal by the output of NOR gate circuit, extract 90 ° of Senior Two position as two input signals input NOR gate circuit.
Compare the absolute value of sine voltage signal and the order of magnitude of cosine voltage signal by comparer, comparer output numerical value is as one tunnel XOR gate input signal, with the input of Senior Two bit value as NOR gate circuit, by the output of NOR gate circuit, extract 45 ° of Senior Three position.
Embodiment 1: the deflection angle numerical value of rotary transformer is 240 °.Use the sine and cosine detuner with rotary transformer just, cosine signal carries out respectively demodulation, judges the deflection angle of rotary transformer at the third quadrant of coordinate system, directly extract 180 ° of the high one digit number values in the deflection numerical value this moment.
Sine voltage signal and cosine voltage signal are respectively as the two-way input signal of NOR gate circuit, and this moment, sine voltage signal and cosine voltage signal all be negative, and the cosine voltage signal is greater than sine voltage signal, need not to extract 90 ° of Senior Two position at this moment.
By comparer relatively through after just getting just, the size of cosine signal, sinusoidal signal numerical value after just getting is greater than the numerical value of the cosine signal after just getting, comparer output high level, the high level signal of this comparer output and output Senior Two bit value are together as the input of NOR gate circuit, NOR gate circuit output high level extracts 45 ° of Senior Three position this moment.Calculate the 6th interval that defection signal is positioned at 0 to 360 ° of eight interval this moment.
To after just getting just, cosine signal carries out respectively A/D conversion (analog digital conversion), the sinusoidal signal numerical value after the conversion obtains a tangent numerical value divided by cosine signal numerical value, tabling look-up by the solution arc tangent obtains being positioned at the angle numerical value in the 6th interval.Thereby obtain the deflection angle numerical value of low eight rotary transformer.
As shown in Figure 1, rotary transformer corner brace converter according to the design of above-mentioned rotary transformer corner brace conversion method comprises sine and cosine detuner 1, gets positive device 2, the first NOR gate circuit 4, the second NOR gate circuit 5, big or small sorting switch 6, comparer 7, A/D converter 8 and table memory 9;
Described sine and cosine detuner 1 is used for respectively sine, the cosine signal of rotary transformer are carried out demodulation, and directly extracts high one 180 °;
Described the first NOR gate circuit 4 is used for the sine after the demodulation, cosine signal evaluation, extracts 90 ° of Senior Two position;
The described input end of getting positive device 2 is connected with the output terminal of described sine and cosine detuner 1, and this is got positive device 2 and is used for the sine after the demodulation, cosine signal are just got, and the signal after just will getting is transferred to respectively comparer 7 and big or small sorting switch 6;
Described comparer 7 is used for sine, cosine signal after just getting are compared, the output terminal of this comparer 7 is connected with the first input end of described the second NOR gate circuit 5, the second input end of this second NOR gate circuit 5 is connected with the output terminal of described the first NOR gate circuit 4, and the output terminal output of described the second NOR gate circuit 5 extracts the signal of 45 ° of Senior Three positions;
The first output terminal of described big or small sorting switch 6 is connected with the input end of described A/D converter 8, the second output terminal of this size sorting switch 6 is connected with the reference edge of described A/D converter 8, the output terminal of this A/D converter 8 is connected with the first input end of described table memory 9, the second input end of this table memory 9 is connected with the output terminal of described the second NOR gate circuit 5, the low eight bit data of output terminal output of this table memory 9.
Rotary transformer corner brace converter of the present utility model has been simplified the signals of rotating transformer transfer process, replaces computer-solution with NOR gate circuit, and the Senior Three position is not in the situation that increase hardware and directly extract from cosine and sine signal.It is simple, directly perceived, reliable that such rotary transformer corner brace converter has system, the inertia production of the rotating signal transmission that the speed that is applicable to is not high.
Above-described embodiment of the present utility model only is to be explanation the utility model example, and is not to be restriction to embodiment of the present utility model.For those of ordinary skill in the field, can also make on the basis of the above description other multi-form variation and changes.Here can't give all embodiments exhaustive.Everyly belong to the row that apparent variation that the technical solution of the utility model amplifies out or change still are in protection domain of the present utility model.
Claims (1)
1. rotary transformer corner brace converter, it is characterized in that, comprise sine and cosine detuner (1), get positive device (2), the first NOR gate circuit (4), the second NOR gate circuit (5), big or small sorting switch (6), comparer (7), A/D converter (8) and table memory (9);
Described sine and cosine detuner (1) is used for respectively sine, the cosine signal of rotary transformer are carried out demodulation, and directly extracts high one 180 °;
Described the first NOR gate circuit (4) is used for the sine after the demodulation, cosine signal evaluation, extracts 90 ° of Senior Two position;
The described input end of getting positive device (2) is connected with the output terminal of described sine and cosine detuner (1), this is got positive device (2) and is used for the sine after the demodulation, cosine voltage signal are just got, and the voltage signal after just will getting is transferred to respectively described comparer (7) and big or small sorting switch (6);
Described comparer (7) is used for sine, cosine signal after just getting are compared, the output terminal of this comparer (7) is connected with the first input end of described the second NOR gate circuit (5), the second input end of this second NOR gate circuit (5) is connected with the output terminal of described the first NOR gate circuit (4), and the output terminal output of described the second NOR gate circuit (5) extracts the signal of 45 ° of Senior Three positions;
The first output terminal of described big or small sorting switch (6) is connected with the input end of described A/D converter (8), the second output terminal of this size sorting switch (6) is connected with the reference edge of described A/D converter (8), the output terminal of this A/D converter (8) is connected with the first input end of described table memory (9), second input end of this table memory (9) is connected with the output terminal of described the second NOR gate circuit (5), the low eight bit data of output terminal output of this table memory (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488689 CN202770457U (en) | 2012-09-24 | 2012-09-24 | Rotary transformer angle code converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220488689 CN202770457U (en) | 2012-09-24 | 2012-09-24 | Rotary transformer angle code converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770457U true CN202770457U (en) | 2013-03-06 |
Family
ID=47777023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220488689 Expired - Fee Related CN202770457U (en) | 2012-09-24 | 2012-09-24 | Rotary transformer angle code converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879021A (en) * | 2012-09-24 | 2013-01-16 | 重庆华渝电气仪表总厂 | Rotary transformer angle code converting method and converter |
| CN107782344A (en) * | 2016-08-31 | 2018-03-09 | 青岛农业大学 | A kind of signals of rotating transformer converter suitable for Variable Velocity Condition |
-
2012
- 2012-09-24 CN CN 201220488689 patent/CN202770457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879021A (en) * | 2012-09-24 | 2013-01-16 | 重庆华渝电气仪表总厂 | Rotary transformer angle code converting method and converter |
| CN102879021B (en) * | 2012-09-24 | 2014-11-19 | 重庆华渝电气仪表总厂 | Rotary transformer angle code converting method and converter |
| CN107782344A (en) * | 2016-08-31 | 2018-03-09 | 青岛农业大学 | A kind of signals of rotating transformer converter suitable for Variable Velocity Condition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102879021B (en) | Rotary transformer angle code converting method and converter | |
| CN104202040B (en) | Bit level detects circuit and method | |
| CN203084482U (en) | Signal acquisition device of synchronous serial output shaft encoder | |
| CN202770457U (en) | Rotary transformer angle code converter | |
| CN102624375A (en) | Signal processing device compatible with multiple kinds of interfaces of encoders and rotary transformers | |
| CN101408774B (en) | AC servo driver compatible with multiple encoder interfaces | |
| CN203457140U (en) | A circuit structure using a single IO port to expand a plurality of buttons | |
| CN203457232U (en) | Infrared image acquisition system based on CPCI architecture | |
| CN104135457A (en) | Digital phase discrimination method and device based on improved CORDIC (coordinated rotation digital computer) algorithm | |
| CN112629570B (en) | Encoder filtering algorithm based on FPGA | |
| CN103634723A (en) | Audio input circuit and electronic device with audio input | |
| CN204255495U (en) | A kind of fault diagnosis system based on wireless vibration sensor | |
| CN203396406U (en) | Encoder subdivision apparatus | |
| CN205388479U (en) | Rotary encoder based on anisotropic magnetic resistance | |
| CN204652350U (en) | Intelligence analog-digital commutator | |
| CN204945294U (en) | With the incremental type encoder offline detection circuit of UVW magnetic-pole signals | |
| CN104135284A (en) | Phase discrimination method and device as well as phase locking method and phase-locked loop | |
| CN206332747U (en) | A kind of ball-shaped camera | |
| CN106018962B (en) | Phase difference is the automatic digital phase discriminator and system of 0 to 2 π between a kind of signal | |
| CN104316085A (en) | Absolute value rotary encoder based on double-speed induction synchronous machine | |
| CN204650285U (en) | The turntable stop means of a kind of angle range more than 360 degree | |
| CN204068930U (en) | A kind of phase-locked loop | |
| KR101670541B1 (en) | Apparatus for simplification of input signal | |
| CN109813964B (en) | Capacitance detection circuit and method | |
| CN105067943A (en) | Disconnection detection method for incremental encoders with UVW pole signals and circuit thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20170924 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |