CN111322938A - Magnetic grid sensor - Google Patents
Magnetic grid sensor Download PDFInfo
- Publication number
- CN111322938A CN111322938A CN202010114346.XA CN202010114346A CN111322938A CN 111322938 A CN111322938 A CN 111322938A CN 202010114346 A CN202010114346 A CN 202010114346A CN 111322938 A CN111322938 A CN 111322938A
- Authority
- CN
- China
- Prior art keywords
- chip
- pin
- nqc
- capacitor
- kmxp
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The invention relates to a magnetic grid sensor, which comprises an AMR sensor KMXP chip, an A/D converter IC NQC chip, a differential line driver AM26C31 chip, a digital display MHDR1XS chip and a memory AT24C02 chip, wherein a VCC1 pin of the KMXP chip is connected with a voltage supply circuit, a VO2+ pin of the KMXP chip is grounded through a capacitor C5, a VO2+ pin of the KMXP chip is grounded through capacitors C4 and C6, a VO 2-pin of the KMXP chip is connected between a capacitor C4 and a capacitor C6, a VO 2-pin of the KMXP chip is also connected with an NSIN pin of the IC NQC chip, a VO1+ pin of the KMXP chip is connected with a VO 8 pin of the KMXP chip through a capacitor C3, and a capacitor C7 is connected between the VO1+ pin of the KMXP chip and the capacitor C.
Description
Technical Field
The invention relates to a magnetic grid sensor.
Background
Nowadays, a high-precision displacement sensor is most prominent as a grating sensor, and the working principle of the displacement sensor is similar to that of a magnetic grating sensor. The grating sensor is a sensor for measuring displacement by adopting a grating-stacked stripe principle. The grating is formed by densely and parallelly scribing lines at equal intervals on a piece of strip-shaped optical glass, and the scribing density is 10-100 lines/mm. The grating fringe formed by the grating has optical amplification effect and error averaging effect, so that the measurement precision can be improved. The sensor consists of four parts, namely a scale grating, an indication grating, an optical path system and a measuring system (see figure 1). When the scale grating moves relative to the indicating grating, light and dark overlapped grating stripes distributed according to a sine rule are formed. The stripes move at the relative movement speed of the grating and directly irradiate the photoelectric element, a series of electric pulses are obtained at the output end of the photoelectric element, and digital signals are generated by an amplifying, shaping, direction-distinguishing and counting system to output so as to directly display the measured displacement. The optical path form of the sensor has two types: one is a transmission type grating, the grid line of which is carved on a transparent material (such as industrial white glass, optical glass and the like); the other is a reflective grating, the grating lines of which are engraved on a metal (stainless steel) or glass metallized film (aluminum film) with strong reflection. The advantages of this sensor are wide range and high accuracy. The grating sensor is applied to program control, numerical control machine tools and three-coordinate measuring mechanisms, and can measure static and dynamic linear displacement and full-circle angular displacement. The method is also applied to the fields of mechanical vibration measurement, deformation measurement and the like.
The grating ruler has the advantages of being good in precision, obvious in cost performance when the measuring range is in the range of 0-3 meters in length, and applicable to metal cutting machine tools, linear cutting, electric sparks, measuring optical projectors and the like. Due to the production process of the grating ruler, if the measurement length exceeds 5 meters, the production and the manufacture are difficult (two glass rulers need to be butted at an oblique angle of 45 degrees to increase the length, the space for a glass ruler chromeplating machine is limited), and the price is expensive. Under the same condition, the requirement of the inlet grating on the working environment is high.
The magnetic grid ruler is characterized by water resistance, oil stain resistance, dust resistance and vibration resistance, the cost performance advantage is more obvious when the length is more than 2 meters, and the advantage is more obvious when the length is longer. The range of the magnetic grid ruler can reach 30 meters. The method has obvious advantages in the application aspects of large metal cutting machine tools such as large boring machines and milling machines, underwater measurement, wood and stone processing machines (heavy dust in working environment), metal plate rolling equipment (large complete equipment) and the like.
Disclosure of Invention
Aiming at the problem, the invention provides a magnetic grid sensor which is high in sensitivity and stable in test.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a magnetic grid sensor comprises an AMR sensor KMXP chip, an A/D converter IC NQC chip, a differential line driver AM26C31 chip, a digital display meter MHDR1XS chip and a memory AT24C02 chip, wherein a VCC1 pin of the KMXP chip is connected with a voltage supply circuit, a VO2+ pin of the KMXP chip is grounded through a capacitor C5, a VO2+ pin of the KMXP chip is grounded through capacitors C4 and C6, a VO 2-pin of the KMXP chip is connected between a capacitor C4 and a capacitor C6, a VO 2-pin of the KMXP chip is also connected with an NSIN pin of the IC NQC chip, a VO1+ pin of the XP KMXP chip is connected with a VO11 pin of the KMXP chip through a capacitor C3, a capacitor C7 is connected between the VO 9 + pin of the KMXP chip and a capacitor C3 and grounded, a capacitor C7 is connected between the capacitor C3 and the KMXP 1-pin of the KMXP chip and the capacitor C2 and grounded, a KMOS chip is also connected with a capacitor C36 1 pin of the KMXP, a power supply circuit is connected between the VCC2 pin and the capacitor C1, and the capacitor C1 is grounded with the GND pin; the NZERO pin of the IC NQC chip is connected with VREF pin of the IC NQC chip, the NZERO pin and the VREF pin are grounded through a capacitor C11, the PZERO pin of the IC NQC chip is connected with the NERR pin of the IC NQC chip through a resistor R1, a resistor R2 and a light emitting diode I, the PZERO pin of the IC NQC chip is connected with the SCL pin of the IC NQC chip through a resistor R1, a resistor R2, a light emitting diode II and a capacitor C8, the VDD pin of the IC NQC chip is connected with a power supply circuit, the GND pin of the IC NQC chip is grounded, the GNDA pin of the IC NQC chip is grounded, the VDDA pin of the IC NQC chip is connected with a power supply circuit, the A pin of the IC NQC chip is connected with the 2A pin of the AM26C31 chip, the B pin of the IC NQC chip is connected with the 3A pin of the AM26C31 chip, the Z pin of the IC NQC chip is connected with the 1A pin of the AM26C31 chip, the 3Z pin of the AM26C31 chip is connected with the No. 7 pin of the MHDR1XS chip, the 3Y pin of the AM26C31 chip is connected with the No. 8 pin of the MHDR1XS chip, the 1Y pin of the AM26C31 chip is connected with the No. 4 pin of the MHDR1XS chip, the G pin of the AM26C31 chip is connected with a power supply circuit, the 1Y pin of the AM26C31 chip is connected with the No. 4 pin of the MHDR1XS chip, the 2Z pin of the AM26C31 chip is respectively connected with the 1Z pin of the AM26C31 chip, the No. 3 pin of the MHDR1XS chip and the No. 5 pin of the MHDR1XS chip, the 2Y pin of the AM26C31 chip is connected with the No. 6 pin of the MHDR1XS chip, the No. 1 pin of the MHDR1XS chip is connected with the power supply circuit, and the No. 2 pin of the MHDR1XS chip; a0 pin, a1 pin, a2 pin, GND pin and WP pin of the AT24C02 chip are all grounded, VCC pin of the AT24C02 chip is connected with a power supply circuit, SCL pin of the AT24C02 chip is connected between SCL pin of the IC NQC chip and a capacitor C8 in series, SDA pin of the AT24C02 chip is connected with SDA pin of the ICNQC chip, SDA pin of the AT24C02 chip is connected with the power supply circuit through a resistor R4, SDA pin of the AT24C02 chip is connected with a resistor R4 through a capacitor C9 and is grounded, SCL pin of the AT24C02 chip is connected with the power supply circuit through a resistor R3, and SCL pin of the AT24C02 chip is also connected with the ground through a capacitor C10.
Preferably, the VDD pin of the IC NQC chip is connected to the power supply circuit, which means that the VDD pin of the IC NQC chip is connected to a 3.3V power supply voltage.
Preferably, the connection between the G pin of the AM26C31 chip and the power supply circuit means the connection between the G pin of the AM26C31 chip and the power supply voltage of 3.3V.
Preferably, the KMXP chip is an AMR linear displacement sensor packaged by 2 × 6 DFN.
The invention achieves the following beneficial effects: the magnetic grid sensor magnetic belongs to the magnetic principle, and is characterized by having the advantages of environmental resistance, vibration resistance, impact resistance and thermal expansion coefficient close to that of steel; the thermal expansion coefficient is very important, and usually, because such products are installed on a machine, most of the machine is made of metal, and once the temperature changes, the machine can expand and contract. The thermal expansion coefficient of the magnetic grid ruler is close to that of the machine table, so that the precision is high.
The device has an ultra-strong self-protection function for severe processing environments, and the processing environments are usually very severe, such as oil stains, cutting fluid, dust and other influence factors, so that the short service life of a measurement product is caused. Against these disadvantages, the magnetic scale has a very strong self-protection capability.
The application scene is extensive, and the application of magnetic grid chi is mostly in traditional lathe at present, and the second is the digit control machine tool, and the third is trades such as semiconductor, liquid crystal, panel equipment. The magnetic grid ruler is suitable for long-distance measurement or transmission measurement with the characteristics of economy and high efficiency. It is especially suitable for use in oil stain, cutting bits, vibration and other harsh environment.
Drawings
FIG. 1 is a schematic diagram of the operation of a prior art grating sensor;
FIG. 2 is a circuit block diagram of a magnetic grid sensor of the present invention;
FIG. 3 is a circuit schematic of a magnetic grid sensor of the present invention;
FIG. 4 is a schematic diagram of the AMR sensor detection principle of the present invention;
FIG. 5 is a schematic diagram of the detection principle of the KMXP sensor of the present invention;
FIG. 6 is a schematic diagram of the detection circuit of the A/D converter of the present invention;
fig. 7 is a schematic diagram of the detection circuit of the differential line driver of the present invention. .
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
A magnetic grid sensor comprises an AMR sensor KMXP chip, an A/D converter IC NQC chip, a differential line driver AM26C31 chip, a digital display meter MHDR1XS chip and a memory AT24C02 chip, wherein a VCC1 pin of the KMXP chip is connected with a voltage supply circuit, a VO2+ pin of the KMXP chip is grounded through a capacitor C5, a VO2+ pin of the KMXP chip is grounded through capacitors C4 and C6, a VO 2-pin of the KMXP chip is connected between a capacitor C4 and a capacitor C6, a VO 2-pin of the KMXP chip is also connected with an NSIN pin of the IC NQC chip, a VO1+ pin of the XP KMXP chip is connected with a VO11 pin of the KMXP chip through a capacitor C3, a capacitor C7 is connected between the VO 9 + pin of the KMXP chip and a capacitor C3 and grounded, a capacitor C7 is connected between the capacitor C3 and the KMXP 1-pin of the KMXP chip and the capacitor C2 and grounded, a KMOS chip is also connected with a capacitor C36 1 pin of the KMXP, a power supply circuit is connected between the VCC2 pin and the capacitor C1, and the capacitor C1 is grounded with the GND pin; the NZERO pin of the IC NQC chip is connected with VREF pin of the IC NQC chip, the NZERO pin and the VREF pin are grounded through a capacitor C11, the PZERO pin of the IC NQC chip is connected with the NERR pin of the IC NQC chip through a resistor R1, a resistor R2 and a light emitting diode I, the PZERO pin of the IC NQC chip is connected with the SCL pin of the IC NQC chip through a resistor R1, a resistor R2, a light emitting diode II and a capacitor C8, the VDD pin of the IC NQC chip is connected with a power supply circuit, the GND pin of the IC NQC chip is grounded, the GNDA pin of the IC NQC chip is grounded, the VDDA pin of the IC NQC chip is connected with a power supply circuit, the A pin of the IC NQC chip is connected with the 2A pin of the AM26C31 chip, the B pin of the IC NQC chip is connected with the 3A pin of the AM26C31 chip, the Z pin of the IC NQC chip is connected with the 1A pin of the AM26C31 chip, the 3Z pin of the AM26C31 chip is connected with the No. 7 pin of the MHDR1XS chip, the 3Y pin of the AM26C31 chip is connected with the No. 8 pin of the MHDR1XS chip, the 1Y pin of the AM26C31 chip is connected with the No. 4 pin of the MHDR1XS chip, the G pin of the AM26C31 chip is connected with a power supply circuit, the 1Y pin of the AM26C31 chip is connected with the No. 4 pin of the MHDR1XS chip, the 2Z pin of the AM26C31 chip is respectively connected with the 1Z pin of the AM26C31 chip, the No. 3 pin of the MHDR1XS chip and the No. 5 pin of the MHDR1XS chip, the 2Y pin of the AM26C31 chip is connected with the No. 6 pin of the MHDR1XS chip, the No. 1 pin of the MHDR1XS chip is connected with the power supply circuit, and the No. 2 pin of the MHDR1XS chip; a0 pin, a1 pin, a2 pin, GND pin and WP pin of the AT24C02 chip are all grounded, VCC pin of the AT24C02 chip is connected with a power supply circuit, SCL pin of the AT24C02 chip is connected between SCL pin of the IC NQC chip and a capacitor C8 in series, SDA pin of the AT24C02 chip is connected with SDA pin of the IC NQC chip, SDA pin of the AT24C02 chip is connected with the power supply circuit through a resistor R4, SDA pin of the AT24C02 chip is connected with a resistor R4 through a capacitor C9 and is grounded, SCL pin of the AT24C02 chip is connected with the power supply circuit through a resistor R3, and SCL pin of the AT24C02 chip is also connected with the ground through a capacitor C10.
The VDD pin of the IC NQC chip is connected with a power supply circuit, namely the VDD pin of the IC NQC chip is connected with 3.3V power supply voltage, the G pin of the AM26C31 chip is connected with the power supply circuit, namely the G pin of the AM26C31 chip is connected with 3.3V power supply voltage, and the KMXP chip is an AMR linear displacement sensor packaged by 2 × 6DFN
The AMR sensor module selected by this product is a KMXP displacement sensor, which is a2 × 6DFN packaged AMR linear displacement sensor, moving the KMXP sensor along the magnetic scale will produce sine and cosine output signals as a function of its position.
The exact displacement value will be obtained by an amplifier in combination with a single chip or a commercial sine/cosine interpolation device. The maximum attainable precision depends largely on the precision of the magnetic scale and the precision of the distance sensor-magnetic scale. Precision values of less than 1% of the pole pitch are common.
The KMXP sensor consists of two magneto-resistive Wheatstone bridges, with the resistors being placed in such a way that the characteristic magnetic field distribution of the magnetic scale with matching pole pitches produces sine and cosine signal outputs as the sensor moves along the magnetic scale. In addition, some sensor types integrate more than one pole to improve the performance of the sensor.
The iC-NQC is a monolithic a/D converter that converts sine/cosine sensor signals to angular position data with selectable resolution and hysteresis characteristics using count-safe vector follower principles.
The absolute value is output through a bidirectional and synchronous serial I/O interface in a BiSS C protocol, and the tracking master clock rate can reach 10 Mbit/s. Alternatively, data compatibility may be selected using SSI, gray or binary codes, with or without error bits. The device also supports bi-directional transmission of SSI ring mode.
The signal period is rapidly recorded by a 24-bit period counter, which can supplement an upward multi-turn position recording.
At the same time, any change in angle is converted into an incremental AB quadrature signal, the minimum conversion distance being guaranteed and adapted to the system (cable length, external counter). The sync index Z signal will be generated if PZER0 and NZER0 are enabled.
The front-end amplifier is configured as an instrumentation amplifier, allowing the sensor bridge to be directly connected without the need for an external resistor.
Various programmable D/A converters are available that can condition amplitude and phase errors for the bias of the sine/cosine sensor signal (bias compensated by 8-bit DAC, gain ratio 5-bit DAC, phase compensation 6-bit DAC)
The front-end gain may be set in stages to accommodate all common complementary sensor signals, ranging in magnitude from about 20 millivolts peak-to-peak to 1.5 volts peak-to-peak, or may not be complementary sensor signals ranging in magnitude from 40 millivolts peak-to-peak to 3 volts peak-to-peak.
The device can use two bidirectional interface configurations, namely EEPROM of I2C interface or BiSS C protocol of IO interface. The free memory space of the EEPROM can be accessed by the BiSS as additional memory data. (EEPROM with I2C interface in the design)
After a low level reset, iC-NQC reads the configuration data and CRC checksum from the EEPROM, and repeats the reading if the CRC checksum is erroneous.
The serial EEPROM interface includes two lines, SCL and SDA, allowing access to the EEPROM using the I2C interface (at least 128 bytes, e.g., 24C01,24C02,24C08 and maximum 24C 16).
The configuration data in the EEPROM, addresses 0 to 0x0F, are CRC protected, and when the device is powered on, the address range 0 to 0x0F is mapped to the configuration RAM of iC-NQC.
When power is turned on (power-on reset), iC-NQC reads configuration data from the EEPROM, during which the error output NERR pin remains low (open drain output), SL0 and incremental codes a, B, and Z output high.
SLO and delta code A, B, Z Release after CRC success, error flag Pin NERR reset, an external
The pull-up resistor is connected to the NERR pin to provide a high level, iC-NQC is then switched to normal operation to determine the current angular position if connected to the sensor and there is no amplitude error (or amplitude error disarmed).
If the CRC validation is unsuccessful due to a data error (transmission interrupted, no EEPROM or EEPROM not programmed), the configuration is automatically repeated, the program stops after 3 failed attempts and the error output pin NERR outputs a persistent low level; the data output SL0 and the incremental signals a, B, Z remain high. During this time regular bidirectional register communication is not possible and the data output SLO remains permanently high. Writing to configuration register RAM addresses 0x01 through 0x0C and address 0x00 must be performed without reply. Data input SLI is ignored: iC-NQC always uses ID 0.
The differential line driver module AM26C31 device is a complementary output differential line driver designed to meet the requirements of TIA/EIA-422-B and ITU (formerly CCITT). The tri-state output has a high current capable of driving a balanced line, such as a twisted pair or parallel wire transmission line, which provides a high impedance state condition when powered down. BiCMOS circuits reduce power consumption without sacrificing speed.
The magnetic scale is usually made as a separate structure with various lengths to choose from. During installation, the fixed length is fixed at a proper position on a machine tool, the parallelism between the fixed length and the plane is adjusted on a fixed smooth plane, the magnetic grid ruler reading head is installed on a part of the machine tool needing to measure the displacement direction, the parallelism between the magnetic grid ruler reading head and the magnetic grid ruler body is adjusted, and after the adjustment is finished and meets the requirement, the magnetic grid ruler reading head is connected with a matched digital display meter, so that the position measurement during the working of the machine tool can be completed. The magnetic grid ruler is convenient to install on a small and medium-sized machine tool, is slightly influenced by temperature due to the fact that the magnetic grid ruler has the thermal expansion coefficient similar to that of an iron core, has the advantages of resisting mechanical vibration, scrap iron and oil pollution, shielding external magnetic interference, guaranteeing the precision requirement, facilitating maintenance and the like, can be widely applied to small and medium-sized boring and milling machines, and is an optimal position measuring sensor used on the existing small and medium-sized boring and milling machines.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (4)
1. A magnetic grid sensor, comprising: the device comprises an AMR sensor KMXP chip, an A/D converter IC NQC chip, a differential line driver AM26C31 chip, a digital display meter MHDR1XS chip and a memory AT24C02 chip, wherein a VCC1 pin of the KMXP chip is connected with a voltage supply circuit, a VO2+ pin of the KMXP chip is grounded through a capacitor C5, a VO2+ pin of the KMXP chip is grounded through capacitors C4 and C6, a VO 2-pin of the KMXP chip is connected between a capacitor C4 and a capacitor C6, a VO 2-pin of the KMXP chip is also connected with an NSIN pin of the IC NQC chip, a VO1+ pin of the KMXP chip is connected with a VO11 pin of the KMXP chip through a capacitor C3, a capacitor C7 is connected between the VO 9 + pin of the KMXP chip and a capacitor C3 and grounded, a capacitor C3 is connected with a capacitor C2 and grounded, a KMXP 1-pin of the KMXP chip, a KMXP chip is also connected with a capacitor C2 pin of the KMOS chip, and a capacitor C36 1-, a power supply circuit is connected between the VCC2 pin and the capacitor C1, and the capacitor C1 is grounded with the GND pin; the NZERO pin of the IC NQC chip is connected with VREF pin of the IC NQC chip, the NZERO pin and the VREF pin are grounded through a capacitor C11, the PZERO pin of the IC NQC chip is connected with the NERR pin of the IC NQC chip through a resistor R1, a resistor R2 and a light emitting diode I, the PZERO pin of the IC NQC chip is connected with the SCL pin of the IC NQC chip through a resistor R1, a resistor R2, a light emitting diode II and a capacitor C8, the VDD pin of the IC NQC chip is connected with a power supply circuit, the GND pin of the IC NQC chip is grounded, the GNDA pin of the IC NQC chip is grounded, the VDDA pin of the IC NQC chip is connected with a power supply circuit, the A pin of the IC NQC chip is connected with the 2A pin of the AM26C31 chip, the B pin of the IC NQC chip is connected with the 3A pin of the AM26C31 chip, the Z pin of the IC NQC chip is connected with the 1A pin of the AM26C31 chip, the 3Z pin of the AM26C31 chip is connected with the No. 7 pin of the MHDR1XS chip, the 3Y pin of the AM26C31 chip is connected with the No. 8 pin of the MHDR1XS chip, the 1Y pin of the AM26C31 chip is connected with the No. 4 pin of the MHDR1XS chip, the G pin of the AM26C31 chip is connected with a power supply circuit, the 1Y pin of the AM26C31 chip is connected with the No. 4 pin of the MHDR1XS chip, the 2Z pin of the AM26C31 chip is respectively connected with the 1Z pin of the AM26C31 chip, the No. 3 pin of the MHDR1XS chip and the No. 5 pin of the MHDR1XS chip, the 2Y pin of the AM26C31 chip is connected with the No. 6 pin of the MHDR1XS chip, the No. 1 pin of the MHDR1XS chip is connected with the power supply circuit, and the No. 2 pin of the MHDR1XS chip; a0 pin, a1 pin, a2 pin, GND pin and WP pin of the AT24C02 chip are all grounded, VCC pin of the AT24C02 chip is connected with a power supply circuit, SCL pin of the AT24C02 chip is connected between SCL pin of the IC NQC chip and a capacitor C8 in series, SDA pin of the AT24C02 chip is connected with SDA pin of the IC NQC chip, SDA pin of the AT24C02 chip is connected with the power supply circuit through a resistor R4, SDA pin of the AT24C02 chip is connected with a resistor R4 through a capacitor C9 and is grounded, SCL pin of the AT24C02 chip is connected with the power supply circuit through a resistor R3, and SCL pin of the AT24C02 chip is also connected with the ground through a capacitor C10.
2. The magnetic grid sensor of claim 1, wherein: the VDD pin of the IC NQC chip is connected with the power supply circuit, namely the VDD pin of the IC NQC chip is connected with 3.3V power supply voltage.
3. The magnetic grid sensor of claim 1, wherein: the connection of the G pin of the AM26C31 chip with the power supply circuit means that the G pin of the AM26C31 chip is connected with a 3.3V power supply voltage.
4. The magnetic grid sensor according to claim 1, wherein the KMXP chip is a2 × 6DFN packaged AMR linear displacement sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010114346.XA CN111322938A (en) | 2020-02-25 | 2020-02-25 | Magnetic grid sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010114346.XA CN111322938A (en) | 2020-02-25 | 2020-02-25 | Magnetic grid sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111322938A true CN111322938A (en) | 2020-06-23 |
Family
ID=71167179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010114346.XA Pending CN111322938A (en) | 2020-02-25 | 2020-02-25 | Magnetic grid sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111322938A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525055A (en) * | 2020-11-27 | 2021-03-19 | 厦门微控科技有限公司 | Linear displacement measuring system based on magnetic grid ruler and using method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100514069C (en) * | 2007-02-09 | 2009-07-15 | 桂林电子科技大学 | Giant magnetic sensor and velocity measurement mechanisms |
| CN102401665A (en) * | 2011-11-16 | 2012-04-04 | 宁波麦克斯电子科技有限公司 | New motor magnetic encoder |
| CN202903125U (en) * | 2012-11-06 | 2013-04-24 | 上海球栅测量系统有限公司 | Detection circuit for displacement sensor |
| CN109870588A (en) * | 2019-02-01 | 2019-06-11 | 南京理工大学 | A kind of ship rotary axis Transient Rotate Speed Measuring device and method |
| WO2019231500A1 (en) * | 2018-06-01 | 2019-12-05 | Ommo Technologies, Inc. | Rotating a permanent magnet in a position detection system |
-
2020
- 2020-02-25 CN CN202010114346.XA patent/CN111322938A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100514069C (en) * | 2007-02-09 | 2009-07-15 | 桂林电子科技大学 | Giant magnetic sensor and velocity measurement mechanisms |
| CN102401665A (en) * | 2011-11-16 | 2012-04-04 | 宁波麦克斯电子科技有限公司 | New motor magnetic encoder |
| CN202903125U (en) * | 2012-11-06 | 2013-04-24 | 上海球栅测量系统有限公司 | Detection circuit for displacement sensor |
| WO2019231500A1 (en) * | 2018-06-01 | 2019-12-05 | Ommo Technologies, Inc. | Rotating a permanent magnet in a position detection system |
| CN109870588A (en) * | 2019-02-01 | 2019-06-11 | 南京理工大学 | A kind of ship rotary axis Transient Rotate Speed Measuring device and method |
Non-Patent Citations (1)
| Title |
|---|
| TE CONNECTIVITY: "KMXP SERIES Anisotropic Magneto-Resistive (AMR) Linear Position Sensors", 《SENSOR SOLUTIONS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525055A (en) * | 2020-11-27 | 2021-03-19 | 厦门微控科技有限公司 | Linear displacement measuring system based on magnetic grid ruler and using method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106767956B (en) | Magnetic induction absolute value encoder of high-speed high-precision machine tool spindle and measuring gear thereof | |
| US4794251A (en) | Apparatus for measuring lengths or angles | |
| CN103983290A (en) | Composite type absolute value encoder | |
| CN108362206B (en) | Non-contact displacement sensor based on capacitive grating | |
| CN203881354U (en) | Combined type encoder | |
| CN209230954U (en) | A kind of harmonic speed reducer test platform | |
| CN111322938A (en) | Magnetic grid sensor | |
| CN1330932C (en) | Full digital addition processing circuit for incremental photoelectric shaft-position encoder | |
| CN105486213A (en) | Digital displaying scale and measurement method thereof | |
| US7690567B2 (en) | Scanning unit for scanning a measuring standard | |
| CN205373645U (en) | Integrated form tape measuring instrument of weighing | |
| CN201378059Y (en) | Motor shaft solid shaft rotary encoder | |
| Hering et al. | Geometric quantities | |
| CN2903916Y (en) | Absolute multi-coil magnetic coder | |
| CN102101394A (en) | Method for accurately positioning absolute encoder and control device | |
| CN205373619U (en) | Digit shows chi | |
| JP6570994B2 (en) | Origin determination method of optical encoder and system using optical encoder | |
| CN109855661A (en) | A kind of incremental encoder signal processing method and system | |
| CN203323704U (en) | Grating ruler with quickly-found zero position | |
| CN1749690A (en) | High different type Abbe error real time compensating method based on electronic level meter | |
| CN207881638U (en) | A kind of non-contact displacement transducer based on capacitive grating | |
| CN221281466U (en) | High-precision current signal output circuit | |
| CN219608061U (en) | Induction type magnetic encoder | |
| CN104848882A (en) | Code wheel fault self-diagnosis method for photoelectric absolute value encoder | |
| CN217604916U (en) | Reflective optical reading head for grating ruler |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200623 |
|
| RJ01 | Rejection of invention patent application after publication |