CN104081163A - Magnetic sensor device - Google Patents
Magnetic sensor device Download PDFInfo
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- CN104081163A CN104081163A CN201380005713.0A CN201380005713A CN104081163A CN 104081163 A CN104081163 A CN 104081163A CN 201380005713 A CN201380005713 A CN 201380005713A CN 104081163 A CN104081163 A CN 104081163A
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- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 18
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
- G01D5/25—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
- G01D5/251—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts one conductor or channel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D7/00—Indicating measured values
- G01D7/005—Indication of measured value by colour change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/10—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for switching-in of additional or auxiliary indicators or recorders
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Provided is a magnetic sensor device capable of stably displaying the three or more different states of the device using light-emitting bodies for emitting visible light according to the amplitude of a sine wave signal and a cosine wave signal which are generated on the basis of an output signal from a magnetoresistive element. Specifically, a magnetic sensor device provided with a magnetoresistive element (3) is provided with light-emitting bodies (8, 18) for emitting visible light according to the amplitude of a sine wave signal and a cosine wave signal which are generated on the basis of an output signal from the magnetoresistive element (3). The light-emitting bodies (8, 18) are provided with a plurality of light-emitting elements (31, 32) for emitting different colors of light, and one case for housing the plurality of light-emitting elements (31, 32).
Description
Technical field
The present invention relates to a kind of magnetic sensor device with magnetoresistive element.
Background technology
Be known to a kind of for carry out the magnetic sensor device (for example, with reference to patent documentation 1) of position probing of its movable part etc. at working equipment etc. in the past.The magnetic sensor device that patent documentation 1 is recorded has read head and magnetic scale.Read head has magnetoresistive element and internal configurations the casing of magnetoresistive element, in this magnetic sensor device, generates sine wave signal and cosine wave signal according to the output signal from magnetoresistive element.At casing, LED lamp is installed.The outside mode that LED lamp is projected into casing with its part is installed to casing.And, this LED lamp carries out luminous as follows: if apply along direction bias voltage forming the LED of LED lamp, the light of LED lamp green-emitting, if LED is applied to contrary direction bias voltage, the light of the rubescent look of LED lamp, if the direction of the bias voltage that LED is applied is switched at short notice, the light of LED lamp jaundice look.
The sine wave signal generating based on the output signal from magnetoresistive element and the amplitude of cosine wave signal change with respect to relative departure or the inclination of magnetic scale according to the relative distance between magnetic scale and magnetoresistive element, magnetoresistive element.That is to say, the amplitude of sine wave signal and cosine wave signal changes with respect to the relative installation of magnetic scale according to magnetoresistive element.And although can obtain Lee's Sa as waveform according to sine wave signal and cosine wave signal, this Lee's Sa changes according to the amplitude of sine wave signal and cosine wave (CW) model as the amplitude of waveform.
In the magnetic sensor device of recording at patent documentation 1, in the position that can carry out suitable position probing of movable part etc., magnetoresistive element and magnetic scale are installed, and while forming appropriate Lee's Sa as waveform according to sine wave signal and cosine wave signal, apply along direction bias voltage the visible ray of LED lamp green-emitting to LED.On the other hand, in the position of the suitable position probing etc. that is difficult to carry out movable part, magnetoresistive element and magnetic scale are installed, and while having formed inappropriate Lee's Sa as waveform, apply contrary direction bias voltage, the visible ray of the rubescent look of LED lamp to LED.
Therefore, the in the situation that of this magnetic sensor device, in the time read head being installed to working equipment etc., confirming the light sending from LED lamp while adjust the installation site of read head, in the time of LED lamp green light, read head is installed to working equipment etc.If read head is installed in the time of LED lamp green light, can forms appropriate Lee's Sa as waveform according to sine wave signal and cosine wave signal, thereby can carry out the suitable position probing of movable part.In addition, in the magnetic sensor device of recording at patent documentation 1, if with the position of the suitable position probing by carrying out movable part etc. and the mode on border of position of suitable position probing etc. that is difficult to carry out movable part, magnetoresistive element and magnetic scale are come and gone at short notice mobile, the bias voltage direction that is applied to LED is switched at short notice, the visible ray of LED lamp jaundice look.
Prior art document
Patent documentation
Patent documentation 1: Japanese kokai publication hei 5-133732 communique
Summary of the invention
Invent technical matters to be solved
In the magnetic sensor device of recording at patent documentation 1, if apply along direction bias voltage to LED, LED lamp sends green visible ray, if apply contrary direction bias voltage to LED, LED lamp sends red visible ray.Therefore, the green visible ray that can send by LED lamp and red visible ray, come state and magnetoresistive element etc. that stable expression magnetoresistive element etc. is arranged on the position of the suitable position probing etc. that can carry out movable part and be arranged on this two states of position of the suitable position probing etc. that is difficult to carry out movable part.
But, in this magnetic sensor device, if with the position of the suitable position probing by carrying out movable part etc. and the mode on border of position of suitable position probing etc. that is difficult to carry out movable part, magnetoresistive element and magnetic scale are come and gone at short notice mobile, and do not switch at short notice the bias voltage direction that puts on LED, LED lamp does not send yellow visible ray.Therefore, in this magnetic sensor device, if it is mobile not make magnetoresistive element and magnetic scale come and go at short notice, cannot use yellow visible ray to represent that magnetoresistive element etc. is configured in the position of the suitable position probing etc. that can carry out movable part and is difficult to carry out the state in the centre position of the position of the suitable position probing etc. of movable part.That is to say, in this magnetic sensor device, cannot use LED lamp stably to represent the third state of magnetic sensor device.
Therefore, problem of the present invention is to provide and a kind ofly can, by sending the luminophor of the visible ray that the amplitude of the sine wave signal that generates with output signal based on from magnetoresistive element and cosine wave signal is corresponding, stably represents the magnetic sensor device of the more than three kinds different conditions of magnetic sensor device.
The technical method that technical solution problem adopts
In order to solve above-mentioned problem, magnetic sensor device of the present invention is characterised in that, in the magnetic sensor device with magnetoresistive element, have the luminophor that sends the visible ray that the amplitude of the sine wave signal that generates with output signal based on from magnetoresistive element and cosine wave signal is corresponding, luminophor has the different light-emitting component of multiple illuminant colours and holds a housing of multiple light-emitting components.
Magnetic sensor device of the present invention is characterised in that, have send the visible ray corresponding with the amplitude of sine wave signal and cosine wave signal luminophor, in this luminophor, multiple light-emitting components are contained in a housing.Therefore, for example, in the situation that luminophor has two light-emitting components, can be by close configuration between two light-emitting components in housing, by making two light-emitting components luminous or simultaneously luminous respectively, can utilize luminophor stably to send the visible ray of three kinds of colors.And, for example, in the situation that luminophor has three light-emitting components, can be by close configuration between three light-emitting components in housing, by making three, light-emitting components difference is luminous, three the light-emitting component while is luminous or two light-emitting components of selection are simultaneously luminous arbitrarily in three light-emitting components, can utilize luminophor stably to send the visible ray of seven kinds of colors.
Therefore, in the present invention, by sending the luminophor of the visible ray that the amplitude of the sine wave signal that generates with output signal based on from magnetoresistive element and cosine wave signal is corresponding, can stably represent the more than three kinds different conditions of magnetic sensor device.And in the present invention, because multiple light-emitting components are contained in a housing, situation about being therefore contained in respectively in different housings from multiple light-emitting components is compared, can be by the designs simplification of luminophor, and can be by luminophor miniaturization.
In the present invention, for example luminophor has the red LED of sending red light and the green LED of sending green light as light-emitting component, if only have red LED luminous, send red visible ray, if only have green LED luminous, send green visible ray, if red LED and green LED are luminous, send orange or yellow visible ray.If form by this way, can use red LED and green LED, stably send the visible ray of three kinds of colors by luminophor.
In the present invention, preferably, in luminophor, can put bright green, redness and orange visible ray, and, can flash red, green and orange visible ray.If form by this way, can use the luminophor of the visible ray that sends three kinds of colors, stably represent six kinds of different states of magnetic sensor device.
In the present invention, preferably, in luminophor, according to the amplitude of sine wave signal and cosine wave signal, put bright green, redness or orange visible ray, if the temperature of the appointed part of magnetic sensor device i.e. the first temperature has exceeded the limit temperature of specifying, the visible ray of flash red.If use magnetic sensor device exceeding under the hot environment that forms the temperature that the various electronic components of magnetic sensor device allow, likely in magnetic sensor device, carry out wrong position probing, if but form by this way, form in the case of exceeding under the hot environment that the various electronic components of magnetic sensor device allow and use magnetic sensor device, luminophor sends and visible ray or not of same state corresponding with the amplitude of sine wave signal and cosine wave signal, thereby can be by the advisory of likely having carried out wrong position probing in magnetic sensor device to user.Therefore, likely in magnetic sensor device, carried out the processing that the user of wrong this situation of position probing specifies by recognizing, working equipment or the assembling device etc. that can prevent from being provided with magnetic sensor device are out of hand.
In the present invention, preferred magnetic sensor device has internal configurations the framework of luminophor, be formed with peristome in framework, described peristome can be seen the mode opening of the visible ray sending from luminophor with the outside from framework, peristome is sealed by outer cover part, and described outer cover part has the visible light permeability that visible ray is seen through and the visible ray diffusivity that makes visible ray diffusion.In luminophor of the present invention, owing to accommodating multiple light-emitting components at housing, therefore, if the sensing angle difference of each light-emitting component,, in the time that multiple light-emitting components are simultaneously luminous, easily produces irregular colour at the visible ray sending to outside from framework even, if but form by this way, in the situation that multiple light-emitting components are simultaneously luminous, the different visible ray of illuminant colour multiple light-emitting components being sent by outer cover part mixes equably, can send to the outside of framework uniformly synthetic light.
In the present invention, magnetic sensor device has head, disposes magnetoresistive element therein; And main part, it has circuit board and is connected with head by cable, and described circuit board is equipped with the calculation portion that carries out the calculation of the interpolation based on sine wave signal and cosine wave signal, and at least any one party in head and main part has luminophor.In this case, preferably head and main part both sides have luminophor.If head and main part both sides have luminophor, even if the luminophor of the side in head or main part is configured in the position that is difficult for seeing, also can confirm by the luminophor of the opposing party in head or main part the state of magnetic sensor.
Invention effect
As mentioned above, in magnetic sensor device of the present invention, by sending the luminophor of the visible ray that the amplitude of the sine wave signal that generates with output signal based on from magnetoresistive element and cosine wave signal is corresponding, can stably represent the more than three kinds different conditions of magnetic sensor device.
Brief description of the drawings
Fig. 1 is the stereographic map of a part for the related magnetic sensor device of embodiments of the present invention.
Fig. 2 is the stereographic map of the head shown in the Fig. 1 that represents to observe from bottom surface side.
Fig. 3 is the cut-open view of the head shown in Fig. 2.
Fig. 4 is the E portion enlarged drawing of Fig. 3.
Fig. 5 is the vertical view of the main part of the magnetic sensor device shown in pie graph 1.
Fig. 6 is the cut-open view of the main part shown in Fig. 5.
Fig. 7 is the F portion enlarged drawing of Fig. 6.
Fig. 8 is the figure for the structure of the circuit board shown in the LED lamp shown in key diagram 3, Fig. 6 and LED lamp.
Fig. 9 be for illustrate magnetoresistive element with respect to the relative installation of the magnetic scale shown in Fig. 1 and Li Sa as the figure of the relation between the amplitude of waveform.
Figure 10 is the process flow diagram of an example of the control flow of the magnetic sensor device shown in presentation graphs 1.
Symbol description
1 magnetic sensor device
3 magnetoresistive elements
4 heads
5 cables
6 main parts
8,18 LED lamps (luminophor)
10,20 frameworks
11a, 21a peristome
15,25 outer cover parts
17 circuit boards
27 digital signal processing portions (calculation portion)
31 red LED (light-emitting component)
32 green LED (light-emitting component)
33 housings
Embodiment
Referring to accompanying drawing, embodiments of the present invention are described.
(one-piece construction of magnetic sensor device)
Fig. 1 is the stereographic map of a part for the related magnetic sensor device of embodiments of the present invention 1.Fig. 2 is the stereographic map from the head 4 shown in bottom surface side presentation graphs 1.Fig. 3 is the cut-open view of the head 4 shown in Fig. 2.Fig. 4 is the E portion enlarged drawing of Fig. 3.Fig. 5 is the vertical view that represents the main part 6 of the magnetic sensor device 1 shown in pie graph 1.Fig. 6 is the cut-open view of the main part 6 shown in Fig. 5.Fig. 7 is the F portion enlarged drawing of Fig. 6.
The magnetic sensor device 1 of present embodiment is the position of parts or the magnetic linear encoder of speed that detects its drawer at movable side for assembling device or working equipment etc. at electronic component, and magnetic sensor device 1 is arranged on the epigyny device such as assembling device or working equipment and uses.This magnetic sensor device 1 has the main part 6 (with reference to Fig. 5) that magnetic scale 2, internal configurations have the head 4 of magnetoresistive element 3 (with reference to Fig. 3) and be connected with head 4 by cable 5.On the length direction of magnetic scale 2, the N utmost point and the S utmost point are by alternating magnetization.And the appointed part of magnetic scale 2 is magnetized to as lower magnetic pole, this magnetic pole is the reference position on the length direction of magnetic scale 2 for detection of head 4.
In magnetic sensor device 1, for example at the drawer at movable side parts of assembling device etc., magnetic scale 2 is installed, at the fixation side parts of assembling device, head 4 and main part 6 are installed.And, configure with the opposed mode of magnetic scale 2 with the magnetoresistive element 3 in head 4, by the signal of exporting from magnetoresistive element 3 is carried out to designated treatment, position or the speed of the drawer at movable side parts of detection assembling device etc.
Head 4 is except having above-mentioned magnetoresistive element 3, also has the framework 10 that has magnetoresistive element 3, LED lamp 8 and substrate 9 for the LED lamp 8 of the luminophor of the state for representing magnetic sensor device 1, the substrate 9 of terminal that is fixed with LED lamp 8 and internal configurations (holding).In one distolateral insertion framework 10 of cable 5.In addition, following to the explanation of head 4 in, as shown in FIG. 2 and 3, using three mutually orthogonal directions respectively as X1 direction, Y1 direction and Z1 direction.And, using X1 direction as " fore-and-aft direction ", using Y1 direction as " left and right directions ", using Z1 direction as " above-below direction ".
Framework 10 is made up of framework main body 11 and outer cover 12, and the metal material that framework main body 11 has electric conductivity by aluminium alloy etc. forms, and the metal material that outer cover 12 has electric conductivity by steel plate etc. forms.Framework main body 11 is formed as roughly rectangular-shaped, and is formed as hollow form.And, the opening of two sides up and down of framework main body 11.Outer cover 12 is formed as lamellar, and is fixed on the one side (lower surface of Fig. 3) in the two sides up and down of framework main body 11.This outer cover 12 is fixed in the mode contacting with framework main body 11, and as shown in Figure 1, outer cover 12 will be formed at the closure of openings of the one side in the two sides up and down of framework main body 11.
The another side (upper surface of Fig. 3) of the two sides up and down of framework main body 11 is and the opposed sensor cover of magnetic scale 2, and disposes magnetoresistive element 3 at the opposite side (upside of Fig. 3) of the above-below direction of the inside of framework main body 11.Another side in the two sides up and down of framework main body 11 is fixed with sealing cover 13, and the thin metal forming that described sealing cover 13 has electric conductivity by aluminium foil etc. forms.Sealing cover 13 will be formed at the closure of openings of another side of two sides up and down of framework main body 11, and the sealed outer cover 13 of magnetoresistive element 3 covers.Be formed with the adhesive linkage of electric conductivity at sealing cover 13, by this adhesive linkage, sealing cover 13 is fixed on framework main body 11.In addition, magnetoresistive element 3 is for example made up of the magneto-resistor pattern that is formed at substrate 14, and substrate 14 is the rigid substrates being formed by silicon or pottery etc.
A side at the fore-and-aft direction of framework main body 11 is formed with peristome 11a, and described peristome 11a can see the mode opening of the visible ray that LED lamp 8 sends with the outside from framework main body 11.Peristome 11a connects a side of the fore-and-aft direction of framework main body 11.And, the inside that framework 10 is inserted from another side of the fore-and-aft direction of framework main body 11 in one end of cable 5.
As shown in Figure 4, peristome 11a is made up of than the second large wide diameter portion 11d of the first wide diameter portion 11c and the internal diameter three wide diameter portion 11e larger than the second wide diameter portion 11d LED configuration section 11b, internal diameter the first wide diameter portion 11c, the internal diameter larger than LED configuration section 11b of a part that disposes LED lamp 8.LED configuration section 11b, the first wide diameter portion 11c, the second wide diameter portion 11d and the 3rd wide diameter portion 11e form with the order toward the outer side of the inner side from framework main body 11 on fore-and-aft direction.The internal diameter of LED configuration section 11b, the first wide diameter portion 11c and the second wide diameter portion 11d is fixed value.And the internal diameter of the 3rd wide diameter portion 11e becomes greatly gradually along with the outside towards fore-and-aft direction.And the internal diameter of LED configuration section 11b is slightly larger than the external diameter of a part of LED lamp 8 that is disposed at LED configuration section 11b.In addition, the end side part of LED lamp 8 is also configured in the inside of the first wide diameter portion 11c.
Peristome 11a is sealed by outer cover part 15.Outer cover part 15 is formed as discoideus, and is installed on the second wide diameter portion 11d in the mode of closed peristome 11a.And, outer cover part 15 with the first wide diameter portion 11c and the second wide diameter portion 11d between the mode that contacts of step surface be fixed on this step surface.
The outer cover part 15 of present embodiment be on transparent resinous resin molding evaporation the film of tin indium oxide (ITO) film, and there is visible light permeability that visible ray is seen through, make visible ray diffusivity and the electric conductivity of visible ray diffusion.For example, outer cover part 15 be on the resin molding of transparent polyethylene terephthalate (PET) system evaporation the film of tin indium oxide (ITO) film.And the resin molding that forms outer cover part 15 is to utilize special particle to make the optical diffusion film of the multiple refraction of light all diffusions.Outer cover part 15 has the face of tin indium oxide (ITO) film to contact with the step surface between the first wide diameter portion 11c and the second wide diameter portion 11d with its evaporation, and makes the mode of conducting between framework main body 11 and outer cover part 15 be installed to the second wide diameter portion 11d.In addition, the visible light transmissivity of outer cover part 15 is more than 60%, and it is below 500 Ω that the evaporation of outer cover part 15 has the sheet resistance value of the face of tin indium oxide (ITO) film.Specifically, the visible light transmissivity of outer cover part 15 is 85%, and it is 20 Ω that the evaporation of outer cover part 15 has the sheet resistance value of the face of tin indium oxide (ITO) film.
Substrate 9 is the rigid substrates being formed by glass epoxy resin etc.As mentioned above, the terminal of LED lamp 8 is fixed on substrate 9 and is electrically connected with substrate 9.Detailed structure about LED lamp 8 will be described below.And one end of cable 5 is fixed on substrate 9 and is electrically connected with substrate 9.And one end of cable 5 is directly electrically connected with substrate 14 or is electrically connected with substrate 14 across substrate 9.
Main part 6 has circuit board 17, LED lamp 18, connector 19 and framework 20, described circuit board 17 is processed the signal of 4 outputs from the head, described LED lamp 18 is as the luminophor of the state for representing magnetic sensor device 1, described connector 19 is for being electrically connected main part 6 with assembling device or the working equipment etc. of electronic component, described framework 20 has circuit board 17 and LED lamp 18 in internal configurations (holding).In another distolateral insertion framework 20 of cable 5.In addition, following to the explanation of main part 6 in, as shown in Fig. 5 and Fig. 6, using three mutually orthogonal directions respectively as X2 direction, Y2 direction and Z2 direction.And, using X2 direction as " fore-and-aft direction ", using Y2 direction as " left and right directions ", using Z2 direction as " above-below direction ".
The metal material that framework 20 has electric conductivity by aluminium alloy etc. forms.And framework 20 is made up of the first framework 21 that can cut apart on above-below direction and the second framework 22.Framework 20 is formed as on above-below direction flat roughly rectangular-shaped, and is formed as hollow form.A side (lower surface of Fig. 6) opening of the above-below direction of the first framework 21, the opening that is fixed on the first framework 21, the first frameworks 21 by the second framework 22 is closed.Connector 19 is for example D-sub type connector, and is configured in a side of the fore-and-aft direction of framework 20.And the inside of framework 20 is inserted in another side of another distolateral fore-and-aft direction from framework 20 of cable 5.
Another side (upper surface of Fig. 6) at the above-below direction of the first framework 21 is formed with peristome 21a, and described peristome 21a can see the mode opening (with reference to Fig. 7) of the visible ray sending from LED lamp 18 with the outside from the first framework 21.Peristome 21a connects the another side of the above-below direction of the first framework 21.
As shown in Figure 7, peristome 21a is made up of a LED configuration section 21b, the 2nd LED configuration section 21c, the first wide diameter portion 21d and the second wide diameter portion 21e, the one LED configuration section 21b disposes a part for LED lamp 18, the internal diameter of the 2nd LED configuration section 21c is larger and dispose the part of the end side of LED lamp 18 than the internal diameter of a LED configuration section 21b, the internal diameter of the first wide diameter portion 21d is larger than the internal diameter of the 2nd LED configuration section 21c, and the internal diameter of the second wide diameter portion 21e is larger than the internal diameter of the first wide diameter portion 21d.The one LED configuration section 21b, the 2nd LED configuration section 21c, the first wide diameter portion 21d and the second wide diameter portion 21e form with the order toward the outer side of the inner side from the first framework 21 on above-below direction.The internal diameter of the one LED configuration section 21b, the 2nd LED configuration section 21c and the second wide diameter portion 21e is fixed value.And the internal diameter of the first wide diameter portion 21d becomes greatly gradually along with the outside towards above-below direction.And the internal diameter of LED configuration section 21b is slightly larger than the external diameter of a part of LED lamp 18 that is disposed at LED configuration section 21b.In addition, the end side part of LED lamp 18 is also configured in the inside of the first wide diameter portion 21d.
Peristome 21a is sealed by outer cover part 25.Outer cover part 25 is formed as discoideus, and is installed on the second wide diameter portion 21e in the mode of closed peristome 21a.And, outer cover part 25 with the first wide diameter portion 21d and the second wide diameter portion 21e between the state that contacts of step surface be fixed on this step surface.
The outer cover part 25 of present embodiment is the same with outer cover part 15, for evaporation on transparent resin molding the film of tin indium oxide (ITO) film, and there is visible light permeability that visible ray is seen through, make visible ray diffusivity and the electric conductivity of visible ray diffusion.For example, outer cover part 25 be on the resin molding of transparent polyethylene terephthalate (PET) system evaporation the film of tin indium oxide (ITO) film.And the resin molding that forms outer cover part 25 is to utilize special particle to make the optical diffusion film of the multiple refraction of light all diffusions.Outer cover part 25 has the face of tin indium oxide (ITO) film to contact with the step surface between the first wide diameter portion 21c and the second wide diameter portion 21d with its evaporation, and makes the mode of conducting between the first framework main body 21 and outer cover part 11 be installed to the second wide diameter portion 21d.In addition, the evaporation of the visible light transmissivity of this outer cover part 25 and outer cover part 25 has the sheet resistance value of face of tin indium oxide (ITO) film identical with outer cover part 15.
Circuit board 17 is the rigid substrates being formed by glass epoxy resin etc.The terminal of LED lamp 18 is fixed on circuit board 17 and is electrically connected with circuit board 17.Connector 19 is fixed on one end of the circuit board 17 on fore-and-aft direction, and is electrically connected with circuit board 17, and the other end of cable 5 is fixed on the other end of the circuit board 17 on fore-and-aft direction, and is electrically connected with circuit board 17.Detailed structure about circuit board 17 and LED lamp 18 will be described below.
(structure of circuit board and LED lamp)
Fig. 8 is the figure for the structure of the circuit board 17 shown in the LED lamp 8 shown in key diagram 3 and Fig. 6 and LED lamp 18.Fig. 9 be for illustrate magnetoresistive element 3 with respect to the relative installation of the magnetic scale 2 shown in Fig. 1 and Li Sa as the figure of the relation between the amplitude V of waveform.
Be equipped with drive integrated circult 28 and the temperature sensor 29 of digital signal processing portion 27, communication use at circuit board 17, described digital signal processing portion 27 processes the signal of exporting from magnetoresistive element 3, and the drive integrated circult 28 of described communication use is for carrying out information communication with epigyny devices such as assembling devices.And except digital signal processing portion 27, drive integrated circult 28 and temperature sensor 29, circuit board 17 is also equipped with various electronic components.Drive integrated circult 28 is electrically connected with digital signal processing portion 27, digital signal processing portion 27 by drive integrated circult 28 and upper between carry out message exchange.And temperature sensor 29, LED lamp 8,18 are electrically connected with digital signal processing portion 27.Temperature sensor 29 is thermistor.That is to say, temperature sensor 29 is the resistive element that larger variation can occur with respect to temperature variation resistance.In addition, temperature sensor 29 is assemblied in the face that is equipped with digital signal processing portion 27 of circuit board 17.
LED lamp 8,18 has the red LED 31 that glows and the green LED 32 of green light.That is to say, LED lamp 8,18 has two different light-emitting components of illuminant colour.And, LED lamp 8,18 has a housing 33 (with reference to Fig. 3, Fig. 6), described housing 33 holds red LED 31 and green LED 32 (more particularly, described housing 33 hold the luminous component of red LED 31 and the luminous component of green LED 32).The cathode terminal of red LED 31 is connected with the cathode terminal of green LED 32, and this cathode terminal ground connection.The anode terminal of the anode terminal of red LED 31 and green LED 32 is connected with digital signal processing portion 27 respectively.
LED lamp 8,81 is luminous as follows, if only have red LED 31 luminous, sends red visible ray, if only viridescent LED is luminous, sends green visible ray, if red LED 31 and green LED 32 are luminous together, sends orange visible ray.In addition, LED lamp 8,18 also can send yellow visible ray in the time that red LED 31 and green LED 32 are luminous together.
Digital signal processing portion 27 is digital signal processor (DSP:Digital Signal Processor).Digital signal processing portion 27 is transfused to the with good grounds output signal from magnetoresistive element 3 and sine wave signal and the cosine wave signal (A phase signals and B phase signals) of the simulation shape that generates.And digital signal processing portion 27 is transfused to the with good grounds output signal from magnetoresistive element 3 and the reference position detection signal (Z phase signals) of the head 4 of the simulation shape that generates.And digital signal processing portion 27 is transfused to the temperature detection signal of exporting from temperature sensor 29.
Digital signal processing portion 27 according to taking sine wave signal and cosine wave signal as basic Lee's Sa as waveform carries out interpolation calculation, calculate the position of the parts of the drawer at movable side of assembling device etc., and the positional information calculating (positional information) is outputed to the epigyny devices such as assembling device by drive integrated circult 28.The digital signal processing portion 27 of present embodiment is for carrying out the calculation portion taking sine wave signal and cosine wave signal as basic interpolation calculation.And digital signal processing portion 27 generates the driving signal of LED lamp 8,18 according to sine wave signal, cosine wave signal and temperature detection signal, and to 8,18 outputs of LED lamp.
Change with respect to relative departure or the inclination of magnetic scale 2 with respect to relative distance and the magnetoresistive element 3 of magnetic scale 2 according to magnetoresistive element 3 according to the amplitude of the sine wave signal generating from the output signal of magnetoresistive element 3 and cosine wave signal.That is to say, the amplitude of sine wave signal and cosine wave signal changes with respect to the relative installation of magnetic scale 2 according to magnetoresistive element 3.And Li Sa changes according to the amplitude of sine wave signal and cosine wave signal as the amplitude V of waveform.
In the present embodiment, be positioned at can utilize magnetic sensor device 1 to carry out the recommendation fitting limit of suitable position probing time with respect to the relative installation of magnetic scale 2 at magnetoresistive element, as shown in Figure 9, Li Sa as the amplitude V of waveform at amplitude V2 to the scope of amplitude V3.Now, according to the driving signal from digital signal processing portion 27, only have green LED 32 luminous, LED lamp 8,18 sends green visible ray.Specifically, in LED lamp 8,18, the visible ray of some bright green.That is to say, LED lamp 8,18 sends green visible ray constantly.In addition, as shown in Figure 9, amplitude V1 to V4 and amplitude Vmax are the value that becomes in this order large.
And, be positioned at and can utilize magnetic sensor device 1 to carry out position probing with respect to the relative installation of magnetic scale 2 at magnetoresistive element 3, but while being positioned at outside the recommendation fitting limit departing from recommendation fitting limit, as shown in Figure 9, Li Sa as the amplitude V of waveform at amplitude V1 to the scope of amplitude V2, or at amplitude V3 to the scope of amplitude V4.Now, according to the driving signal from digital signal processing portion 27, red LED 31 and green LED 32 are luminous together, and LED lamp 8,18 sends orange visible ray.Specifically, in LED lamp 8,18, the visible ray of some bright orange.That is to say, LED lamp 8,18 sends orange visible ray constantly.
And, (be for example positioned at can not utilize magnetic sensor device 1 to carry out the abnormal ranges of position probing time with respect to the relative installation of magnetic scale 2 at magnetoresistive element 3, when magnetoresistive element 3 is crossed far with respect to the relative distance of magnetic scale 2 or mistake is near), as shown in Figure 9, Li Sa as the amplitude V of waveform at amplitude 0 to the scope of amplitude V1, or at amplitude V4 to the scope of amplitude Vmax.Now, according to the driving signal from digital signal processing portion 27, only have red LED 31 luminous, LED lamp 8,18 sends red visible ray.Specifically, in LED lamp 8,18, the visible ray of some shiny red.That is to say, LED lamp 8,18 sends red visible ray constantly.
So, in the present embodiment, LED lamp 8,18 sends the visible ray of as corresponding in the amplitude V of waveform with Li Sa (that is to say, corresponding with the amplitude of sine wave signal and cosine wave signal).That is to say, LED lamp 8,18 sends the visible ray corresponding with respect to the relative installation of magnetic scale 2 with magnetoresistive element 3.Specifically, in LED lamp 8,18, according to Li Sa as the amplitude V of waveform, some bright green, orange or red visible ray.
And, in the present embodiment, if the temperature being detected by temperature sensor 29 has exceeded the allowable temperature of digital signal processing portion 27, drive integrated circult 28 and other various electronic components, according to the driving signal from digital signal processing portion 27, only have red LED31 luminous, LED lamp 8,18 sends red visible ray.Specifically, in LED lamp 8,18, the visible ray of flash red.That is to say, LED lamp 8,18 glisteningly sends red visible ray.So, if the temperature being detected by temperature sensor 29 has exceeded the allowable temperature of specifying, LED lamp 8,18 sends and the not visible ray of same state (visible ray of flicker) of the visible ray as corresponding in the amplitude of waveform with Li Sa (visible ray of lighting).And if the temperature being detected by temperature sensor 29 has exceeded the allowable temperature of specifying, digital signal processing portion 27 stops to epigyny device output position information such as assembling devices.
In addition, by judging in digital signal processing portion 27 whether the level Vth of the temperature detection signal of exporting from temperature sensor 29 has exceeded threshold value (first threshold) Vth2 specifying, judge whether the temperature being detected by temperature sensor 29 has exceeded the allowable temperature of specifying.And, in digital signal processing portion 27, whether the level Vth that also can judge the temperature detection signal of exporting from temperature sensor 29 has exceeded the threshold value lower than first threshold Vth2 (Second Threshold) Vth1 (that is to say, whether the temperature being detected by temperature sensor 29 has exceeded the reference temperature of the appointment lower than allowable temperature), if the temperature being detected by temperature sensor 29 has exceeded the reference temperature of specifying, digital signal processing portion 27 exports alarm (temperature anomaly alarm) by drive integrated circult 28 to epigyny devices such as assembling devices.In the present embodiment, the temperature of 1 appointed part that the temperature being detected by temperature sensor 29 is magnetic sensor device, i.e. the first temperature.
And, in the present embodiment, if produce and process extremely (specifically in digital signal processing portion 27, if there is aftermentioned house dog mistake),, according to the driving signal from digital signal processing portion 27, only have red LED 31 luminous, LED lamp 8,18 sends red visible ray.Specifically, in LED lamp 8,18, the visible ray of flash red.That is to say, LED lamp 8,18 glisteningly sends red visible ray.So, abnormal if digital signal processing portion 27 occurs to process, LED lamp 8,18 sends and the visible ray with all states in the time that the temperature being detected by temperature sensor 29 has exceeded allowable temperature (visible ray of flicker).And if there is aftermentioned house dog mistake, digital signal processing portion 27 stops to epigyny device output position information such as assembling devices.
(control method of magnetic sensor device)
Figure 10 is the process flow diagram of an example of the control flow of the magnetic sensor device 1 shown in presentation graphs 1.
The magnetic sensor device 1 forming in the above described manner is for example controlled as follows.That is to say, first, the processing that digital signal processing portion 27 has judged whether to occur the step S2 to S10 of following explanation the house dog mistake (that is to say, the house dog of digital signal processing portion 27 is not transferred the house dog mistake of specification signal in some cycles) (step S1) not finishing in some cycles.In step S1, in the situation that not there is house dog mistake, digital signal processing portion 27 obtains the digital value (step S2) of the sine wave signal, cosine wave signal and the temperature detection signal that are transfused to, and calculates Li Sa as the amplitude V (step S3) of waveform according to the sine wave signal obtaining and the digital value of cosine wave signal.
Then, digital signal processing portion 27 compares Li Sa as the amplitude V of waveform and amplitude V1 to V4, Ruo Lisa (that is to say to the scope of amplitude V3 at amplitude V2 as the amplitude V of waveform, if be "No" in step S4, and in step S5, be "Yes"), 8,18 bright greens of LED lamp, then, carry out interpolation calculation (step S6).And, Ruo Lisa as the amplitude V of waveform at amplitude V1 to the scope of amplitude V2, or, Li Sa as the amplitude V of waveform at amplitude V3 to the scope of amplitude V4, (that is to say, if be "No" in step S4, S5), digital signal processing portion 27 makes LED8,18 lamp point bright oranges, enters into step S6.And, Ruo Lisa as the amplitude V of waveform at amplitude O to the scope of amplitude V1, or Lee's Sa as the amplitude V of waveform at amplitude V4 to the scope of amplitude Vmax, (that is to say, if be "Yes" in step S4), digital signal processing portion 27 makes LED lamp 8,18 lamp point shiny reds, enters into step S6.
If calculate positional information by the interpolation of carrying out in step S6, digital signal processing portion 27 upgrades the positional information (step S7) of having stored.Then, digital signal processing portion 27 judges whether the level Vth of temperature detection signal exceedes first threshold Vth2 (step S8).In step S8, the level Vth of temperature detection signal does not exceed in the situation of first threshold Vth2, and digital signal processing portion 27 judges whether the level Vth of temperature detection signal exceedes Second Threshold Vth1 (step S9).
In step S9, the level Vth of temperature detection signal does not exceed in the situation of Second Threshold Vth1, digital signal processing portion 27 communicates by epigyny devices such as drive integrated circult 28 and assembling devices, and positional information is outputed to epigyny device (step S10), returns to step S1.On the other hand, in step S9, the level Vth of temperature detection signal exceedes in the situation of Second Threshold Vth1, and digital signal processing portion 27 is (step S11) after having upgraded warning message, enter into step S10, temperature anomaly alarm is outputed to epigyny device together with positional information.
And in step S8, the level Vth of temperature detection signal exceedes in the situation of first threshold Vth2, digital signal processing portion 27 makes LED lamp 8,18 flicker ruddiness (step S12).And in step S1, even if there is house dog mistake, digital signal processing portion 27 also makes LED lamp 8,18 flicker ruddiness (step S13).Step S12, S13 are treated to infinite loop processing, have been continued until designated treatment.That is to say, if the level Vth of temperature detection signal has exceeded first threshold Vth2, or house dog mistake has occurred, having completed before designated treatment, digital signal processing portion 27 stops to epigyny device output position information such as assembling devices.
In addition, in above-mentioned control flow, Li Sa carries out in this order as these three processing of comparison between the level Vth of renewal, first threshold Vth2 and Second Threshold Vth1 and the temperature detection signal of the lighting of the comparison of the amplitude V of waveform and amplitude V1 to V4 and LED lamp 8,18, interpolation calculation and positional information, but these three processing can be carried out according to random order.
(the main effect of present embodiment)
As described above, in the LED of present embodiment lamp 8,18, red LED 31 and green LED 32 are contained in a housing 33, and red LED 31 and green LED 31 are configured in close position.Therefore,, by making red LED 31 and green LED 32 luminous or simultaneously luminous respectively, can stably send from LED lamp 8,18 visible ray of three kinds of colors.Therefore, in the present embodiment, by according to Li Sa as the amplitude V of waveform sends the LED lamp 8,18 of green, orange or red visible ray, can stably represent four kinds of different conditions of magnetic sensor device 1.And, in the present embodiment, because red LED 31 and green LED 32 are contained in a housing 33, therefore, and red LED 31 is compared with the situation that green LED 32 is contained in respectively different housings, can be by LED8,18 designs simplification, and, can be by 8,18 miniaturizations of LED lamp.
In the present embodiment, LED lamp 8,18 is configured in the inside of framework 10,20, but be formed with peristome 11a, 12a in framework 10,20, described peristome 11a, 12a are can see the mode opening of the visible ray sending from LED lamp 8,18 from the outside of framework 10,20, and peristome 11a, 12a are had outer cover part 15,25 sealings of visible light permeability.Therefore, in the present embodiment, can confirm the visible ray sending from LED lamp 8,18 from the outside of framework 10,20.Here, due to the LED lamp 8 of present embodiment, 18 have red LED 31 and green LED 32, if therefore the sensing angle of red LED 31 and green LED 32 is different, in the time that red LED 31 and green LED 32 is simultaneously luminous, easily from framework 10, in 20 visible rays that send to outside, produce irregular colour even, but in the present embodiment, due to outer cover part 15, 25 have visible ray diffusivity, therefore in the time that red LED 31 and green LED 32 is simultaneously luminous, can pass through outer cover part 15, the visible ray that 25 visible rays that red LED 31 is sent send with green LED 32 mixes equably, thereby to framework 10, uniformly synthetic light is sent in 20 outside.
In the present embodiment, according to Li Sa as the amplitude V point bright green of waveform, orange or red visible ray, on the other hand, if the temperature being detected by temperature sensor 29 has exceeded allowable temperature, the visible ray of flash red.Therefore, by the red visible ray of flicker, digital signal processing portion 27, drive integrated circult 28 and other various electronic components can be used under the hot environment of allowable temperature that has exceeded them and the advisory of likely having carried out wrong position probing in magnetic sensor 1 to user.And, if there is house dog mistake, there is the digital signal processing portion 27 cannot regular event, in magnetic sensor 1, carry out the possibility of wrong position probing, but in the present embodiment, if the house dog mistake occurring, the visible ray of LED lamp 8,18 flash red, therefore can be by the advisory of likely having carried out wrong position probing in magnetic sensor 1 to user.Therefore, in the present embodiment, the user who has likely carried out wrong this situation of position probing by recognizing in magnetic sensor 1 carries out designated treatment, can prevent that the epigyny devices such as assembling device are out of hand.
Particularly in the present embodiment, if the temperature being detected by temperature sensor 29 has exceeded the allowable temperature of specifying, or there is house dog mistake, before the processing of specifying finishes, digital signal processing portion 27 stops to epigyny device output position information such as assembling devices, can prevent that thus wrong positional information is input to epigyny device.Therefore,, in present embodiment, can prevent reliably that epigyny device is out of hand.
In the present embodiment, be provided with LED lamp 8 at head 4, be provided with LED lamp 18 at main part 6.Therefore, in the present embodiment, even if the side in LED lamp 8 or LED lamp 18 is configured in the position that is difficult for seeing, also can confirm relative installation and circuit board 17 temperature around of magnetoresistive element 3 with respect to magnetic scale 2 by the opposing party in LED8 or LED lamp 18.
(other embodiments)
Above-mentioned embodiment is an example of the preferred embodiment of the present invention, but the present invention is not limited thereto, and in the scope that does not change purport of the present invention, can carry out various changes.
In the above-described embodiment, according to Li Sa as the amplitude V of waveform, 8,18 bright greens of LED lamp, orange or red visible ray, in the time that the temperature being detected by temperature sensor 29 has exceeded allowable temperature and house dog mistake has occurred, the visible ray of LED lamp 8,18 flash red.In addition for example, also can be according to Li Sa as the amplitude V of waveform, green, the orange or red visible ray of LED lamp 8,18 flicker, in the time that the temperature being detected by temperature sensor 29 has exceeded the temperature allowing and house dog mistake has occurred, the visible ray of 8,18 shiny reds of LED lamp.
In the above-described embodiment, in the time that the temperature being detected by temperature sensor 29 has exceeded allowable temperature and in the time there is house dog mistake, the visible ray of LED lamp 8,18 flash red.In addition for example, also can be in the time that the temperature being detected by temperature sensor 29 have exceeded allowable temperature and/or while there is house dog mistake, LED lamp 8,18 flicker green or orange visible rays.
In the above-described embodiment, by 8,18 bright greens of LED lamp, orange or red visible ray, represent the relative installation of magnetoresistive element 3 with respect to magnetic scale 2, and, by the visible ray of LED lamp 8,18 flash red, represent that the temperature being detected by temperature sensor 29 has exceeded allowable temperature and house dog mistake has occurred, but also can utilize the visible ray of the green visible ray of LED lamp 8,18 flickers and flashed orange stably to represent other states of magnetic sensor device 1.For example, also can utilize the green visible ray of LED lamp 8,18 flicker or the visible ray of flashed orange stably to represent: to be contained in state, the detection speed (answer frequency) of magnetic sensor device 1 and the offset voltage level of sine wave signal and cosine wave signal of the EEPROM (Electrically Erasable Programmable Read Only Memo) (EEPROM) of digital signal processing portion 27 any one and to exist abnormal situation or cable 5 etc. to produce the bad state such as situation of broken string.In this case, can use LED lamp 8,18 stably to represent six kinds of different conditions of magnetic sensor device 1.
In the above-described embodiment, LED lamp 8,18 has red LED 31 and green LED 32.In addition for example, LED lamp 8,18 also can replace red LED 31 or green LED 32 and have the LED of the light beyond the redness sent and green light.For example, LED8,18 also can replace red LED 31 or green LED 32 and have blue led.And LED lamp 8,18 also can be except having red LED 31 and green LED 32, also there are one or two above LED of the redness sent and green light in addition.For example, LED lamp 8,18, except having red LED 31 and green LED 32, also has blue led.In this case, owing to can utilizing red LED 31, green LED 32 and blue led, make LED lamp 8,18 send the visible ray of seven kinds of colors, therefore can use LED lamp 8,18, stably represent the various states of magnetic sensor device 1.
In the above-described embodiment, head 4 and main part 6 both there is LED lamp 8,18.In addition for example, also can head 4 or main part 6 in only have any one party to there is LED lamp 8,18.And in the above-described embodiment, head 4 and main part 6 split ground form, but head 4 and main part 6 also can form.That is to say have the head of magnetoresistive element 3 also to can be the head with main part in internal configurations.In this case, magnetic sensor device 1 has any one in LED lamp 8 or LED lamp 18.And in the above-described embodiment, main part 6 has the connector 19 for main part 6 is electrically connected with assembling device etc., the connector portion still with connector 19 also can be connected with main part 6 by the cable of specifying.That is to say, connector portion and the main part 6 with connector 19 also can form to split.
In the above-described embodiment, temperature sensor 29 is assemblied in circuit board 17.In addition for example, temperature sensor 29 both can be arranged on the position beyond the dividing circuit plate 17 of main part 6, also can be arranged on head 4.And, if magnetoresistive element 3 temperature around uprises, the sine wave signal generating based on the output signal from magnetoresistive element 3 and the amplitude of cosine wave signal diminish, consequently, because Li Sa diminishes as the amplitude V of waveform, therefore when temperature that also can be around detecting head 4 and this temperature exceed the allowable temperature of appointment, utilize in the situation of visible ray of LED lamp 8,18 flash red, detect head 4 temperature around according to Li Sa as the amplitude V of waveform.In this case, owing to not needing temperature sensor 29, therefore can be by the designs simplification of magnetic sensor 1.In addition, in this case, the head 4 detecting as the amplitude V of waveform according to Li Sa temperature is around the temperature of the appointed part of magnetic sensor 1, i.e. the first temperature.
In the above-described embodiment, magnetic sensor device 1 has LED lamp 8,18 as the luminophor that sends the visible ray as corresponding in the amplitude V of waveform with Li Sa, but magnetic sensor device 1 also can have luminophor except LED lamp 8,18 as the luminophor that sends the visible ray as corresponding in the amplitude V of waveform with Li Sa.And in the above-described embodiment, magnetic sensor device 1 is electromagnetic linear scrambler, but the applicable magnetic sensor device of structure of the present invention also can be electromagnetic rotary scrambler.
Claims (6)
1. a magnetic sensor device,
Described magnetic sensor device has magnetoresistive element,
Described magnetic sensor device has luminophor, and it sends the sine wave signal that generates with output signal based on from described magnetoresistive element and the visible ray corresponding to amplitude of cosine wave signal,
Described luminophor has the different light-emitting component of multiple illuminant colours and holds a housing of multiple described light-emitting components.
2. magnetic sensor device according to claim 1,
Described luminophor has as the red LED of the burn red of described light-emitting component and the green LED of glow green, if only have described red LED luminous, send red visible ray, if only have described green LED luminous, send green visible ray, if described red LED is luminous together with described green LED, send orange or yellow visible ray.
3. magnetic sensor device according to claim 2,
In described luminophor, can put bright green, redness and orange visible ray, and can flash red, green and orange visible ray.
4. magnetic sensor device according to claim 3,
In described luminophor, according to the amplitude points bright green of described sine wave signal and described cosine wave signal, redness or orange visible ray, if the temperature of the appointed part of described magnetic sensor i.e. the first temperature has exceeded the limit temperature of specifying, the visible ray of flash red.
5. according to the magnetic sensor device described in any one in claim 1 to 4,
Described magnetic sensor device has the framework that has described luminophor in internal configurations,
Be formed with peristome in described framework, described peristome can be seen the mode opening of the visible ray sending from described luminophor with the outside from described framework,
Described opening is sealed by outer cover part, and described outer cover part has the visible light permeability that visible ray is seen through and the visible ray diffusivity that makes visible ray diffusion.
6. according to the magnetic sensor device described in any one in claim 1 to 5,
Described magnetic sensor device has:
Head, disposes described magnetoresistive element therein; And
Main part, it has circuit board and is connected with described head by cable, and described circuit board is equipped with the calculation portion that carries out the calculation of the interpolation based on described sine wave signal and described cosine wave signal,
At least one party in described head and described main part has described luminophor.
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| JP2012-031893 | 2012-02-16 | ||
| JP2012031893A JP2013167574A (en) | 2012-02-16 | 2012-02-16 | Magnetic sensor device |
| PCT/JP2013/050018 WO2013121803A1 (en) | 2012-02-16 | 2013-01-07 | Magnetic sensor device |
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| US5241173A (en) * | 1991-05-16 | 1993-08-31 | Renishaw Transducer Systems Limited | Readhead for producing signals when travelling along a scale having a set-up detector for detecting alignment of quadrature signals |
| US20050072911A1 (en) * | 2003-10-01 | 2005-04-07 | Olympus Corporation | Encoder |
| CN101310165A (en) * | 2005-11-16 | 2008-11-19 | 瑞尼斯豪公司 | Scale and readhead apparatus and method |
| CN102197282A (en) * | 2008-10-28 | 2011-09-21 | 瑞尼斯豪公司 | Absolute encoder setup indication |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0443222U (en) * | 1990-08-10 | 1992-04-13 | ||
| JP2569026Y2 (en) * | 1991-07-31 | 1998-04-22 | 関東自動車工業株式会社 | Warning device for remaining amount of washer fluid |
| JP2006094667A (en) * | 2004-09-27 | 2006-04-06 | Tamagawa Seiki Co Ltd | Servo-driving display method |
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- 2013-01-07 WO PCT/JP2013/050018 patent/WO2013121803A1/en active Application Filing
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5241173A (en) * | 1991-05-16 | 1993-08-31 | Renishaw Transducer Systems Limited | Readhead for producing signals when travelling along a scale having a set-up detector for detecting alignment of quadrature signals |
| US20050072911A1 (en) * | 2003-10-01 | 2005-04-07 | Olympus Corporation | Encoder |
| CN101310165A (en) * | 2005-11-16 | 2008-11-19 | 瑞尼斯豪公司 | Scale and readhead apparatus and method |
| CN102197282A (en) * | 2008-10-28 | 2011-09-21 | 瑞尼斯豪公司 | Absolute encoder setup indication |
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