CN201133933Y - Magnetic-field measurement equipment and electric motor possessing the magnetic-field measurement equipment - Google Patents
Magnetic-field measurement equipment and electric motor possessing the magnetic-field measurement equipment Download PDFInfo
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- CN201133933Y CN201133933Y CNU2007201521533U CN200720152153U CN201133933Y CN 201133933 Y CN201133933 Y CN 201133933Y CN U2007201521533 U CNU2007201521533 U CN U2007201521533U CN 200720152153 U CN200720152153 U CN 200720152153U CN 201133933 Y CN201133933 Y CN 201133933Y
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- hall effect
- circuit board
- printed circuit
- effect sensor
- pcb
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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
- G01D5/14—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 influencing the magnitude of a current or voltage
- G01D5/142—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 influencing the magnitude of a current or voltage using Hall-effect devices
- G01D5/145—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 influencing the magnitude of a current or voltage using Hall-effect devices influenced by the relative movement between the Hall device and magnetic fields
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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
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
- G01D11/30—Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
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- Transmission And Conversion Of Sensor Element Output (AREA)
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Abstract
The utility model discloses a measuring equipment of magnetic field, which comprises a printed circuit board (100) and at least one Hall effect sensor (150). The Hall effect sensor is designed to measure the magnetic field induced by a rotating magnetic ring (15). The Hall effect sensor is constructed to the through hole type unit, moreover a connecting pin thereof (151) is bent and at least some part lean against on one surface of the printed circuit board. The equipment is used to fix one or a plurality of hall effect sensors via a reliable mode (10), thereby ensuring the sensor to be fixed stably relative to the rotating magnetic ring and being used to carry out the reliable measurement of the generated magnetic field.
Description
Technical field
The utility model relates to a kind of magnetic-field-measuring device, as hall effect sensor, to measure the rotation of motor rotor shaft.
The utility model can be applied in the motor that is used for driving machine motor vehicle equipment, as the vehicle window motor or open the motor of top or be used to operate the motor of seat.
Background technology
This direct current motor itself is known.Motor generally includes field frame assembly and is mounted to rotor rotated in stator.Motor also comprises the winding that is attached to armature spindle and is connected to the commutator blade of powering via brush, and its center brush is designed to contact with the commutator blade during winding is attached to the armature spindle rotation.Brush is electrically connected with power supply, and is used for and will feeds electric energy into the winding of stator.
Electronic control circuit can be associated with motor.For this reason, generally include printed circuit board (PCB), and this circuit board except that miscellaneous part particularly including to the electrical connection and the microcontroller of commutator brush.
In addition, in motor, often need monitoring and obtain the information of armature spindle rotation, as motor revolution, rotational speed, sense of rotation and position, angle.The control electronic installation of vehicle window motor needs these information so that functions such as execution such as glass for vehicle window moves automatically, anti-pinch.For the information (for example, as the speed of motor rotor shaft rotation or the direction of motor rotation) of determining the motor reel rotation, it is known using one or more hall effect sensors.Magnet ring is placed on the armature spindle, and magnet ring sends the rotating magnetic field that is associated with the rotation of armature spindle.Normally one or more hall effect sensors are placed near magnet ring.
The position in the magnetic field of sending according to magnet ring, each sensor all can provide electric signal, and these electric signal are used to determine the speed of armature spindle rotation and the direction or the Qi Jiao position of motor rotation by the variation in magnetic field then.In order to ensure reliable measurement, the location of these sensors is most important.Preferably, hall effect sensor should be orientated as and make its Surface Vertical in the field wire by the induction of the rotary magnet of rotor, and hall effect sensor fully should be placed near magnet ring, the intensity that makes is enough to be arrived by sensor.
Under electronic control circuit and situation that motor is associated, advantageously hall effect sensor directly is placed on the printed circuit board (PCB) of electronic control system, so that the sensor of avoiding having nothing for it but provides a special support portion and avoids providing electrical connection between this support portion of sensor and printed circuit board (PCB).Hall effect sensor also can be exclusively used in the circuit board that sensor signal is handled and be associated.The sensor that utilizes magnetic flux conductor to pass the signal to away from magnet ring also is known.
Document EP-A-0 891 647 shows hall effect sensor is installed on the printed circuit board (PCB) of electronic control system at a distance.The magnetic flux guide member is transmitted to sensor with magnetic flux from the magnet ring of rotor then.
Document WO-A-96/24067 shows hall effect sensor is placed near on the printed circuit board (PCB) of magnet ring.This hall effect sensor is surface mount component, and its surface is parallel to the field wire by the magnet ring induction.The magnetic flux guide member is provided then, field wire is vertically focused on the surface of sensor.
Under all these situations, all need to control sensor on printed circuit board (PCB) the location and with respect to the location of magnet ring, this can limit the selection of printed circuit board (PCB) with respect to armature spindle assembling and layout.In addition, on the plate or the machinery of the sensor in its environment keep must be solid and reliable because sensor surface can disturb measurement from sensor owing to the change of skew, signal level or the shape of for example signal with respect to the locating bias of induction field wire.
In a kind of self known mode, typically exist two kinds to be used to assemble electronic package and assembly is placed on technology on the printed circuit board (PCB).Hall effect sensor can be built into surface installing type unit (mounted on surface equipment or SMD) or through hole unit thus.Through hole type assembly normally utilizes the solder joint that is positioned at surface, assembly place reverse side to be fixed on the printed circuit board (PCB), and SMD type assembly then is fixing onboard by the reflux technique on the face that supports this assembly.Therefore, on same block of plate, use through hole type assembly and SMD type assembly to need twice manufacturing process or two welding stages usually.
The hall effect sensor that is built into SMD type unit has one and detects the surface, and this detection surface is parallel to that face that these sensors are installed on the plate, thereby these sensors rest on this surface of plate.Therefore the location of SMD assembly is firm especially.On the other hand, the hall effect sensor that is built into through hole type unit has a detection surface perpendicular to plate, and pin or pin that plate thickness is passed in these sensor utilizations are fixed on this plate.Therefore, through hole type assembly does not lean on onboard usually.This can reduce their mechanical robustness when for example banging car door, and may change their initial position, thus interferometry.It is possible providing a kind of supporting component to come firm through-hole component onboard, but this can increase cost.
According to document FR-A-2 698 216, it is known that hall effect sensor is built into the through hole type unit that is placed in the special-purpose miniature big envelope.Hall effect assembly thereby have detection surface towards the rotor rotary magnet, and this miniature big envelope has constituted a kind of sensor surface that prevents and has produced the mechanical support member of any skew with respect to field wire.
Need a kind of magnetic field detection equipment, this magnetic field detection equipment allows sensor directly to be placed on the printed circuit board (PCB), and also no longer needs special-purpose stream guiding or support component.
Further, need a kind of magnetic-field-measuring device, this magnetic-field-measuring device is guaranteed sensor strong fix in the induction field wire, so that reliably magnetic field is measured.
Also need a kind of magnetic field detection equipment, this magnetic field detection equipment can obtain by simplified manufacturing technique, particularly only need utilize reflux technique to carry out the single welding stage on single on the printed circuit board (PCB).
The utility model content
For this reason, the utility model proposes and use one or more hall effect sensors that are built into through hole type unit, the pin of crooked these unit or pin so that these unit rest on the surface of printed circuit board (PCB).The hall effect sensor assembly can weld by reflux technique in the single track manufacturing process with other SMD type assemblies of placing onboard then simultaneously.The location of the field wire that in addition, the pin of crooked through hole unit is firm hall effect sensor is responded to respect to rotor rotation magnet ring.And the position of this assembly in height can be adjusted according to the used size of bending process, makes it meet the requirement that is applicable to this motor.
Thereby one or more hall effect sensors can be positioned in P.e.c. directly on a section (section) of magnet ring, or are placed near on the printed circuit board (PCB) of magnet ring in firm mode.Equipment of the present utility model allows to orientate hall effect sensor as the feasible Surface Vertical that detects in field wire, and no longer needs to be oriented on the plane of plate, and need not any stream guide member.
The utility model relates more specifically to a kind of magnetic-field-measuring device, and this magnetic-field-measuring device comprises:
Printed circuit board (PCB);
The rotation magnet ring;
At least one hall effect sensor, it is designed to measure the magnetic field by described rotation magnet ring induction, and described hall effect sensor is built into through hole type unit, and it connects pin and is bent and rests at least in part on the face of described printed circuit board (PCB).
According to each embodiment, equipment of the present utility model comprises one or more in the following feature:
Described hall effect sensor is placed on the section of described printed circuit board (PCB);
Described hall effect sensor is arranged in the breach of the described section of described printed circuit board (PCB);
Described hall effect sensor is arranged in the big envelope of the described section that is fixed on described printed circuit board (PCB);
The connection pin of the described bending of described hall effect sensor is electrically connected to the connection lead-in wire on the face that is provided in described printed circuit board (PCB);
The described connection pin of described hall effect sensor passes the thickness of described printed circuit board (PCB);
The described connection pin utilization fluctuation welding solder technology of described hall effect sensor is electrically connected to the lead-in wire on arbitrary of the described plate;
Described hall effect sensor is placed in the through hole in the described printed circuit board (PCB).
The utility model also relates to a kind of motor, comprising:
Armature spindle;
According to magnetic-field-measuring device of the present utility model, and wherein said magnet ring is attached to described armature spindle.
In addition, the utility model relates to and is being used for operating the use of the equipment of vehicle glazing to this motor.
Description of drawings
By reading the specific descriptions of back to the utility model embodiment, other feature and advantage of the present utility model will be represented, and the utility model embodiment only is exemplary also providing with reference to following accompanying drawing:
Fig. 1 is the perspective schematic view according to the magnetic-field-measuring device of the utility model first embodiment; With
Fig. 2 is the schematic side elevation of Fig. 1 equipment;
Fig. 3 is the figure that has according to the motor of the magnetic-field-measuring device of the utility model first embodiment;
Fig. 4 is the schematic side elevation according to the measuring equipment of first modification of the utility model first embodiment;
Fig. 5 is the schematic plan according to the measuring equipment of second modification of the utility model first embodiment;
Fig. 6 is the schematic side elevation of Fig. 5 equipment;
Fig. 7 is the schematic side elevation according to the cross section of the magnetic-field-measuring device of first modification of the utility model second embodiment;
Fig. 8 is the figure with motor of Fig. 7 measuring equipment;
Fig. 9 is the schematic side elevation according to the cross section of the magnetic-field-measuring device of second modification of the utility model second embodiment;
Figure 10 is the schematic side elevation according to the cross section of the magnetic-field-measuring device of the utility model the 3rd embodiment;
Figure 11 is the schematic side elevation according to the cross section of the magnetic-field-measuring device of the utility model the 4th embodiment;
Figure 12 is the schematic side elevation according to the cross section of the magnetic-field-measuring device of the utility model the 5th embodiment;
Figure 13 is the perspective schematic view of the measuring equipment of Figure 12.
Embodiment
Magnetic-field-measuring device of the present utility model comprises a printed circuit board (PCB) and at least one hall effect sensor, and this sensor is designed to measure the magnetic field by the induction of rotation magnet ring.This sensor is positioned in the induced field, and it detects Surface Vertical in field wire.Hall effect sensor is built into through hole type unit, and the connection pin of this through hole type unit is bent and rests on the face of described printed circuit board (PCB).This equipment is used to utilize one or more hall effect sensors directly to measure magnetic field, and these hall effect sensors have the strong fix with respect to the rotation magnet ring, so that the magnetic field that is produced is measured reliably.
In context of the present utility model, we are defined as printed circuit board (PCB) (being also referred to as PCB) the electronics stilt that forms on rigid substrate, etching is leaded on described substrate, and these lead-in wires provide the electrical connection between the assembly that is fixed at least one face of above support.This stilt for example can adopt the form of the plate with two faces, four sections.The width of described section is corresponding to the thickness of printed circuit board (PCB), perhaps is about 0.8 to 2.5mm, and this depends on this plate, and the length of described section is corresponding to the length or the width of plate.According to the utility model, first (we are referred to as end face) of this plate comprises electronic package and electric connecting wire, and second (being called the bottom surface) can be without any electric connecting wire.Electronic package on the plate can be the surface mount component on the end face, and is electrically connected to the connection lead-in wire on the end face.
At least one assembly (it comprises hall effect sensor) is a through hole type assembly.Yet, in the prior art, through hole type assembly is electrically connected to the connection lead-in wire by this section through the metal wire hole, in described metal wire hole, make bump by capillary action, compared with prior art, the through-hole component that comprises the utility model hall effect sensor can be electrically connected to the connection lead-in wire on the end face by the pin that they are bent.Therefore, all electrical connections of printed circuit board (PCB) can realize on the same one side at plate in the stage at single reflux technique.
In context of the present utility model, we also will rotate magnet ring and be defined as the magnet that is fixed on the motor rotor shaft, and printed circuit board (PCB) can be formed the part of Motor Control electronic installation.Therefore, the utility model allows to utilize the sensor unit of simplifying to dispose, determine in reliable mode rotational speed, sense of rotation and the position, angle of armature spindle.
According to first embodiment shown in Fig. 1-6, hall effect sensor is placed on the section of printed circuit board (PCB).This printed circuit board (PCB) is placed in the plane that is basically perpendicular to armature spindle then, and this section that has a hall effect sensor is directly placed towards magnet ring.Ring as magnetic source then will be by diametrical magnetization.According to a modification (not shown), printed circuit board (PCB) can be placed in the plane substantially parallel with rotor axis, and the section that has a hall effect sensor is placed with directly relative with a face of magnet ring.The ring that is used as magnetic source is then by axial magnetized.
Fig. 1 and Fig. 2 show the equipment that is used to measure magnetic field according to the utility model first embodiment.
Fig. 1 and Fig. 2 are illustrated in the magnet ring of rotation on the axis 20.In a kind of itself known mode, the rotary inductive of ring 15 goes out magnetic field, and field wire leaves ring perpendicular to the circumference of ring.Under the situation that is applied to direct current motor (as the vehicle window motor), this magnet ring can be the magnet that is fixed in motor rotor shaft.
These accompanying drawings also show printed circuit board (PCB) 100.This plate has two faces, and wherein at least one face is used to admit and is connected to the electronic package that goes between on the plate.Especially, plate 100 can comprise the relay that electronic microprocessor chip, memory chip, electronics connect pin and power to motor.Under the situation that is applied to direct current motor (as the vehicle window motor), plate 100 can also be included in the connection of brush carrier.In an example shown, plate 100 is fitted on armature spindle by radially loading, and it is in the plane vertical with the rotation of magnet ring.
Fig. 1 also shows two hall effect sensors 150, is used to measure the magnetic field of being responded to by rotation magnet ring 15.For this reason, need their surface should be basically vertical with the field wire of this ring induction.According to this first embodiment, hall effect sensor 150 is placed in the section of printed circuit board (PCB) 100.Sensor 150 the surface thereby rest on this section of plate.Printed circuit board (PCB) is assemblied in the plane vertical with the rotation 20 of magnet ring 15, and this section of plate 100 always is in the plane parallel with axis 20.
According to the utility model, hall effect sensor 150 is built into through hole type unit, comprises connecting pin 151.These pins or pin one 51 are generally used for passing the thickness of printed circuit board (PCB), so that fix this assembly, and it are electrically connected to connection lead-in wire on one of them face of plate.According to the utility model, the pin one 51 of each sensor 150 is bent and rests on the end face 101 of printed circuit board (PCB) 100.Then, crooked pin 151 can be electrically connected to the lead-in wire that is connected on the end face by a reflux technique stage simultaneously with other SMD type assemblies on the end face 101 that places plate.
In Fig. 2, a plurality of holes that get out in the plate 100 are used to hold the curved end of the pin one 51 of sensor 150.Therefore, the common process that is used for the assembly connection also can be used for the bottom surface 102 of plate 100 or the lead-in wire on the end face 101, as the fluctuation solder technology.And crooked pin one 51 will rest on the end face 101 of plate at least in part, so that guarantee that hall effect sensor 150 is firmly kept.The japanning part of plate 100 end faces can be removed in the position that sensor pin 151 passes through, so that utilize reflux technique that pin one 51 is welded on the end face 101, and guarantees that thus sensor 150 is firmly kept.
Fig. 4 shows first modification according to first embodiment of the equipment that is used to measure magnetic field of the present utility model.The parts identical with the parts of reference Fig. 1 and 2 description use identical reference number.
In the situation of printed circuit board (PCB) 100 of (order of magnitude of 4mm) that the embodiment modification of Fig. 4 is specially adapted to have relatively large thickness.In Fig. 4, hall effect sensor 150 is placed in the breach 110 of section of printed circuit board (PCB) 100.Breach 110 is made by the width of this section, and it is the thickness of this plate.Breach 110 thereby sensor 150 is positioned in the thickness of plate 100 these sections.Sensor thereby abut against this section, and be bearing on the support of breach 110.The pin one 51 of each sensor 150 all is bent and rests at least in part on the end face 101 of printed circuit board (PCB) 100.Can the connection that crooked pin 151 is electrically connected on end face or the bottom surface be gone between in the reflow soldering stage then.
Fig. 5 shows second modification according to first embodiment of the equipment that is used to measure magnetic field of the present utility model.The parts identical with the parts of reference Fig. 1 and 2 description use identical reference number.
In Fig. 5, hall effect sensor 150 is placed in the breach 115, and this breach is set on the length direction of printed circuit board (PCB) 100 sections.These breach 115 are along the section lateral register sensor of plate.These sensors rest on the section and on the sidewall of breach 115 thus.
Should be appreciated that breach 110 is set on the Width of section of plate, and breach 115 is set on the length direction of section of plate, both can combine.These breach 110,115 allow sensor 150 to keep with respect to the better machinery of being positioned with of the field wire of being responded to by magnet ring at them.Improved thus by sensor and carried out measuring reliability.This breach 110,115 can be the process of this plate under a plate cutting, and by conventional printed circuit board (PCB) manufacturing, this is without any need for special operation by for example grinding, machine work, material removal or punching press.
As illustrated in Figures 5 and 6, hall effect sensor 150 can be fixed to this big envelope on the section of printed circuit board (PCB) 100 by big envelope 120 protections.This big envelope 120 also can use with the embodiment modification of Fig. 1 and 2.The penetrable big envelope 120 of magnetic wave, big envelope is used to protect the surface of sensor 150.Big envelope can be entreated the edge that is held in plate.Big envelope 120 has improved sensor 150 and has kept with respect to the machinery on the location of the field wire of being responded to by magnet ring at them.The one or more hall effect sensors that are placed on the printed circuit board (PCB) section also can be fixed to big envelope 120.
Have according to the equipment that is used to measure magnetic field of the present utility model and to make us interested application especially, be used to monitor the rotation of the armature spindle of direct current motor.
Fig. 3 schematically shows this motor.The motor of Fig. 3 can be the assembly on the motor vehicles, as the vehicle window motor, open the motor of top or the motor of actuating doors.
Because hall effect sensor 150 rests on the section of plate 100, also in the breach that may provide in the section of plate, so hall effect sensor 150 can be held in place with respect to magnet ring 15 by printed circuit board (PCB) self.Therefore, by in motor, plate being positioned, optimized firm maintenance and the location of sensor 150 in the magnetic field of rotation magnet ring 15 inductions.
Although do not illustrate among the figure, when hall effect sensor be placed on by the section of the relative plate of a face of the magnet ring of axial magnetized on the time, printed circuit board (PCB) can be joined by axially being installed into luggage.This plate thereby be parallel to rotor axis, and be inserted in the breach of the engine casing (Eng Cas) that purpose for this reason provides.
According to second embodiment shown in Fig. 7 to Fig. 9, hall effect sensor is placed on the edge of printed circuit board top surface, described printed circuit board (PCB) be placed on the vertical substantially plane of rotor axis in, and hall effect sensor is directly placed with respect to magnet ring.The parts identical with the parts of the description that sees figures.1.and.2 have identical reference number.
Fig. 7 shows the equipment that is used to measure magnetic field according to the utility model second embodiment first modification.
Fig. 7 shows the magnet ring 15 of rotation on axis 20, and as the printed circuit board (PCB) among Fig. 1 100.Fig. 7 also illustrates hall effect sensor 150, and it connects pin 151 and is bent and rests on the top surface of printed circuit board 101.So crooked connection pin 151 links to each other by the lead-in wire that is connected on the end face 101 of reflux technique for example and plate subsequently.
As mentioned above, because sensor 150 is used to measure the magnetic field by rotating magnet ring 15 inductions, therefore needs it to detect the surface and be basically perpendicular to the field wire of being responded to by this ring, this field wire is basically parallel to the surface of the circumference of ring 15.In the embodiment shown in Fig. 7, the connection pin 151 of hall effect sensor 150 is bent into L shaped and L shaped.Through hole type assembly generally includes length and is about three connection pins of 18 to 20mm.These pins are generally used for passing the thickness of printed circuit board (PCB), and redundance was cut before with the solder compositions filling vias.According to the utility model, the connection pin 151 of hall effect sensor assembly 150 is bent, and one of them pin forms L shaped, two pins form L shaped, otherwise perhaps, so that as the support portion, thus the position on the surface of maintenance hall effect sensor assembly 150.This embodiment has the advantage of simplifying printed circuit board manufacturing process.All these assemblies for example can be placed on the same one side of plate and can be connected in single welding process.
Fig. 8 shows the application of equipment that is used to measure magnetic field of Fig. 7, so that the rotation of the armature spindle of monitoring direct current motor.The parts that illustrated identical with Fig. 3 have identical reference number.By printed circuit board (PCB) 100 is assembled on the engine casing (Eng Cas) 1, make hall effect sensor assembly 150 directly relative with rotation magnet ring 15.
Because hall effect sensor assembly 150 rests on the lip-deep crooked pin of plate by means of it and is fixed on the face of plate 100, so hall effect sensor 150 is held in place with respect to magnet ring 15 by printed circuit board (PCB) self.Therefore by in motor, plate being positioned, optimized firm maintenance and the location of sensor 150 in the magnetic field of rotation magnet ring 15 inductions.
Fig. 9 shows the magnetic-field-measuring device according to the utility model second embodiment second modification.The same with Fig. 7, Fig. 9 shows magnet ring 15, printed circuit board (PCB) 100 and the hall effect sensor 150 of rotation on axis 20, and the connection pin 151 of hall effect sensor 150 is bent and rests on the top surface of printed circuit board 101.
According to the embodiment modification shown in Fig. 9, the connection pin 151 of hall effect sensor 150 is bent to bridge shape.A section of hall effect sensor 150 rests on the surface of printed circuit board (PCB), and it is crooked backward to connect pin 151, and the end is connected to the connection lead-in wire on the front of plate 100.This embodiment is used for drawing closelyer to the plane of printed circuit board (PCB) 100 the detection surface of hall effect sensor, this for example is to need as this moment at the relative positioning of the relative positioning of plate 100 and magnet ring 15, and when magnet ring peripheral had to concentrate on as much as possible in the detection surface of hall effect sensor 150.Present embodiment also has the advantage of simplifying printed circuit board manufacturing process, because all these assemblies for example can be placed on the same one side of plate, and can be connected in single welding process.
Therefore, when printed circuit board (PCB) 100 is placed with perpendicular to rotor rotation 20, hall effect sensor 150 can according in the embodiment of describing referring to figs. 1 to Fig. 9 any, be arranged on the plate 100 according to the relative longitudinal register of plate 100 with respect to rotation magnet ring 15.If plate 100 is assembled into just in time towards magnet ring 15 with radial manner, then hall effect sensor 150 will be positioned on the section of plate (Fig. 1 to Fig. 6).If there is skew in radially loading matching board 100 palettes 100 with respect to magnet ring 15, hall effect sensor 150 will be positioned on the face of plate so, and will be according to the location on the plane of plate 100 with magnet ring 15, more or less away from the surface (Fig. 7 to Fig. 9) of plate.
According to the 3rd embodiment shown in Figure 10, hall effect sensor is placed on the top surface of printed circuit board, and described printed circuit board (PCB) is placed in the plane substantially parallel with rotor axis, and hall effect sensor is directly placed towards magnet ring.
Figure 10 show on axis 20 magnet ring 15, printed circuit board (PCB) 100 and the hall effect sensor 150,150 of rotation ', hall effect sensor 150,150 ' the connection pin be bent and rest on the top surface of printed circuit board 101.The surface that the length of pin allows to make sensor is more near magnet ring, so that obtain better to measure sensitivity.This embodiment is used to obtain for example degree of approach of the about 10mm between the sensor and magnet ring.In the embodiment shown in Figure 10, identical with Fig. 7, each hall effect sensor 150,150 ' the connection pin all be bent into L shapedly and L shaped, and rest on the end face 101 of plate, so that by using the single reflow soldering stage to simplify technology.In Figure 10, printed circuit board (PCB) 100 is parallel to rotor rotation 20 to be placed, and hall effect sensor 150,150 ' the detection surface with respect to the plane inclination of plate 100.Make hall effect sensor 150,150 ' the connection pin bend to certain angle and allow each sensor 150,150 ' the detection surface alignment be strict vertical with the line in the magnetic field of swivel eye 15 induction, and hold desirable distance, so that signal intensity is optimized measurement with environmental protection.Pin is bent to certain angle also be used to alignment sensor, make them measure magnetic signal with required phase deviation, described phase deviation is generally 90.In addition, the standard of different manufacturers may relate to the different ring of use under the identical substantially situation of motor structure.By change simply sensor 150,150 ' the curvature and the length of connection pin, this embodiment then allows to be applicable to dissimilar rings.
According to the 4th embodiment shown in Figure 11, hall effect sensor extends from the bottom surface side of printed circuit board (PCB), and described printed circuit board (PCB) is placed in the plane substantially parallel with rotor axis, and hall effect sensor is directly placed towards magnet ring.
Figure 11 is illustrated in magnet ring 15, printed circuit board (PCB) 100 and the hall effect sensor 150 of rotation on the axis 20,150 ', hall effect sensor 150,150 ' connection pin 151,151 ' pass the thickness of plate 100, be bent then, and partly rest on the top surface of printed circuit board 101.Compare with Figure 10, being provided with of Figure 11 allows printed circuit board (PCB) to be placed nearer from rotor axis 20.Therefore, no longer need all electronic packages all are contained in the space that keeps between rotor 10 and the plate 100.Then electronic package is placed on the end face 101 of plate, relative with rotor, and hall effect sensor assembly 150,150 ' have to be placed on the bottom surface 102, towards rotor, make them relative with magnet ring 15.Hall effect sensor 150,150 ' can radially place (as shown in figure 11) or axially placement with respect to magnet ring.Then, with other electronic packages preferably on the end face 101 of plate, be connected simultaneously hall effect sensor 150,150 ' connection pin 151,151 ', so that in the manufacturing of plate 100, avoid two welding process.Yet, hall effect sensor 150,150 ' big envelope be not as conventional through-hole component, to be fixed because connect pin 151,151 ' can not cut behind end face at the thickness that passes plate, but be bent and rest at least in part on the end face 101.Thus, can implement to utilize the single welding stage of reflux technique to all electronic packages on the plate.In addition, connect pin 151,151 ' this bending help to promote welding stage and equipment hall effect sensor 150,150 between the operating period ' stability.
According to the 5th embodiment shown in Figure 12 and 13, hall effect sensor is positioned in the hole of printed circuit board (PCB), described P.e.c. is placed in the plane substantially parallel with rotor axis by plate, holds the hole of hall effect sensor and directly places towards magnet ring.
Figure 12 shows the magnet ring 15 and the printed circuit board (PCB) 100 of rotation on axis 20, and this printed circuit board (PCB) 100 has a through hole 130 that wherein is placed with hall effect sensor 150.As Figure 12 and shown in Figure 13, sensor 150 the surface thereby basically with printed circuit board (PCB) 100 coplanes.Sensor 150 even can completely or partially be enclosed in the thickness of plate 100.Being provided with of Figure 12 and Figure 13 allows the as close as possible rotor axis 20 of printed circuit board (PCB) so that have better measurement sensitivity.The connection pin 151 of hall effect sensor 150 is bent and rests at least in part on the end face 101 of plate 100.Sensor 150 connects in the hole that gets out in some be inserted into plates 100 in the pins 151, and connects the electrical lead on the end face 101 that pin 151 and other electronic packages side by side preferably all are connected to plate, thereby avoids two welding process of plate 100 in making.Thus, can implement to utilize the single welding stage of reflux technique to all electronic packages on the plate.In addition, this bending of connection pin 151 helps to promote the stability of hall effect sensor 150.
Need not to give unnecessary details the embodiment that illustrates by example above the utility model is not limited to.Therefore, can expect other relevant settings of printed circuit board (PCB) 100 and rotor axis 20, and the specific design of plate 100, magnet ring 15 and sensor 150 all will depend on the application of expecting.
Claims (11)
1. magnetic-field-measuring device comprises:
Printed circuit board (PCB) (100);
Rotation magnet ring (15);
At least one hall effect sensor (150), it is designed to measure the magnetic field by described rotation magnet ring (15) induction;
Described hall effect sensor is built into through hole type unit,
It is characterized in that,
The connection pin (151) of described sensor is bent and rests at least in part on the face of described printed circuit board (PCB), and the bending of wherein said connection pin (151) is used for described hall effect sensor (150) is stabilized in described printed circuit board (PCB) (100).
2. equipment according to claim 1 is characterized in that: described hall effect sensor (150) is placed on the section of described printed circuit board (PCB).
3. equipment according to claim 2 is characterized in that: described hall effect sensor (150) is arranged in the breach (110,115) of the described section of described printed circuit board (PCB).
4. according to claim 2 or 3 described equipment, it is characterized in that: described hall effect sensor (150) is arranged in the big envelope (120) of the described section that is fixed on described printed circuit board (PCB) (100).
5. equipment according to claim 1 is characterized in that: described hall effect sensor (150) is placed in the through hole (130) on the described printed circuit board (PCB) (100).
6. according to each described equipment among the claim 1-3, it is characterized in that: the connection lead-in wire that provides on a face of described printed circuit board (PCB) (100) is provided the connection pin (151) of the described bending of described hall effect sensor (150).
7. equipment according to claim 4 is characterized in that: the connection lead-in wire that provides on a face of described printed circuit board (PCB) (100) is provided the connection pin (151) of the described bending of described hall effect sensor (150).
8. according to each described equipment in claim 1-3 and 5, it is characterized in that: the described connection pin (151) of described hall effect sensor (150) passes the thickness of described printed circuit board (PCB) (100).
9. equipment according to claim 4 is characterized in that: the described connection pin (151) of described hall effect sensor (150) passes the thickness of described printed circuit board (PCB) (100).
10. equipment according to claim 6 is characterized in that: the described connection pin (151) of described hall effect sensor (150) utilizes the fluctuation solder technology to be electrically connected to lead-in wire on arbitrary of the described plate.
11. a motor comprises:
Armature spindle (10);
It is characterized in that described motor also comprises according to each described magnetic-field-measuring device among the claim 1-10, and wherein said magnet ring (15) is attached to described armature spindle.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0605759A FR2902872B1 (en) | 2006-06-27 | 2006-06-27 | DEVICE FOR MEASURING MAGNETIC FIELD. |
| FR06/05759 | 2006-06-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133933Y true CN201133933Y (en) | 2008-10-15 |
Family
ID=37714462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201521533U Expired - Fee Related CN201133933Y (en) | 2006-06-27 | 2007-06-27 | Magnetic-field measurement equipment and electric motor possessing the magnetic-field measurement equipment |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN201133933Y (en) |
| FR (1) | FR2902872B1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9041389B2 (en) | 2012-07-27 | 2015-05-26 | International Business Machines Corporation | Hall measurement system with rotary magnet |
| CN104749390A (en) * | 2013-12-31 | 2015-07-01 | 森萨塔科技（常州）有限公司 | Positioning frame structure |
| US9678040B2 (en) | 2015-04-09 | 2017-06-13 | International Business Machines Corporation | Rotating magnetic field hall measurement system |
| CN108627292A (en) * | 2017-03-16 | 2018-10-09 | 迈来芯电子科技有限公司 | Torque sensor |
| WO2019085586A1 (en) * | 2017-10-31 | 2019-05-09 | 格力电器（武汉）有限公司 | Surface mounted structure, surface mounting method, motor, and surface mounted chip |
| CN110199201A (en) * | 2017-01-31 | 2019-09-03 | 小鹰公司 | Fault-tolerant servo sensor with linear hall sensor and discrete Hall sensor |
| CN113811458A (en) * | 2019-04-11 | 2021-12-17 | 法雷奥开关和传感器有限责任公司 | Vehicle sensor unit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2733467B1 (en) * | 2012-11-14 | 2017-07-05 | Portescap SA | Magnetic encoder |
| FR3032475B1 (en) | 2015-02-09 | 2017-03-03 | Inteva Products Llc | APPARATUS AND METHOD FOR DETECTING AND PREVENTING MOVEMENT OF AN ENGINE IN A DEVICE OF A SYSTEM |
| US9772385B2 (en) * | 2015-04-09 | 2017-09-26 | International Business Machines Corporation | Rotating magnetic field hall measurement system |
| US11573075B1 (en) | 2021-09-16 | 2023-02-07 | Beta Air, Llc | Systems and methods for estimating angular position |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0719017Y2 (en) * | 1989-03-09 | 1995-05-01 | 株式会社ゼクセル | Magnetoelectric converter |
| US6064199A (en) * | 1998-02-23 | 2000-05-16 | Analog Devices, Inc. | Magnetic field change detection circuitry having threshold establishing circuitry |
| US6710593B2 (en) * | 2001-07-25 | 2004-03-23 | American Electronic Components, Inc. | Rotary position sensor with a self-lubricating bearing |
| DE20306654U1 (en) * | 2003-04-28 | 2003-07-03 | A B Elektronik Gmbh | crankshaft sensor |
-
2006
- 2006-06-27 FR FR0605759A patent/FR2902872B1/en not_active Expired - Fee Related
-
2007
- 2007-06-27 CN CNU2007201521533U patent/CN201133933Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9041389B2 (en) | 2012-07-27 | 2015-05-26 | International Business Machines Corporation | Hall measurement system with rotary magnet |
| CN104749390A (en) * | 2013-12-31 | 2015-07-01 | 森萨塔科技（常州）有限公司 | Positioning frame structure |
| US9678040B2 (en) | 2015-04-09 | 2017-06-13 | International Business Machines Corporation | Rotating magnetic field hall measurement system |
| CN110199201A (en) * | 2017-01-31 | 2019-09-03 | 小鹰公司 | Fault-tolerant servo sensor with linear hall sensor and discrete Hall sensor |
| US11280638B2 (en) | 2017-01-31 | 2022-03-22 | Wisk Aero Llc | Fault tolerant servo sensor with linear hall sensors and discrete hall sensors |
| CN110199201B (en) * | 2017-01-31 | 2022-04-01 | 威斯克航空有限责任公司 | Fault tolerant servo sensor with linear hall sensor and discrete hall sensor |
| CN108627292A (en) * | 2017-03-16 | 2018-10-09 | 迈来芯电子科技有限公司 | Torque sensor |
| CN108627292B (en) * | 2017-03-16 | 2021-07-23 | 迈来芯电子科技有限公司 | Torque sensor |
| WO2019085586A1 (en) * | 2017-10-31 | 2019-05-09 | 格力电器（武汉）有限公司 | Surface mounted structure, surface mounting method, motor, and surface mounted chip |
| CN113811458A (en) * | 2019-04-11 | 2021-12-17 | 法雷奥开关和传感器有限责任公司 | Vehicle sensor unit |
| CN113811458B (en) * | 2019-04-11 | 2023-09-22 | 法雷奥开关和传感器有限责任公司 | Vehicle sensor unit |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2902872A1 (en) | 2007-12-28 |
| FR2902872B1 (en) | 2008-11-14 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081015 Termination date: 20140627 |
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| EXPY | Termination of patent right or utility model |