CN113252931B - Signal detection device of Hall revolution speed sensor - Google Patents
Signal detection device of Hall revolution speed sensor Download PDFInfo
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- CN113252931B CN113252931B CN202110451763.8A CN202110451763A CN113252931B CN 113252931 B CN113252931 B CN 113252931B CN 202110451763 A CN202110451763 A CN 202110451763A CN 113252931 B CN113252931 B CN 113252931B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
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Abstract
The application discloses a signal detection device of a Hall rotating speed sensor, which comprises a sensor body, a detection platform, power supply equipment and an oscilloscope; the detection table comprises a base and an installation frame, the installation frame is connected with the base and can move on the base, and the sensor body is connected with the installation frame; a first wall of the base is provided with signal teeth which correspond to the sensor body in position; the sensor body is electrically connected with the power supply equipment and the oscilloscope respectively, the sensor body is configured to output signals based on magnetic field changes caused by the signal teeth when the mounting rack moves relative to the base, and the first wall is a wall of the base, which is connected with the mounting rack. The signal detection device disclosed by the application can detect the function of the Hall rotating speed sensor with low cost.
Description
Technical Field
The application relates to the technical field of sensor detection, in particular to a signal detection device of a Hall rotating speed sensor.
Background
The Hall rotation speed sensor is a magnetoelectric sensor based on Hall effect, has extensive application in the automotive filed, wherein, it is comparatively common to utilize Hall rotation speed sensor to detect the rotational speed and the position of camshaft, the rotational speed and the position of bent axle to and the rotational speed of gearbox transmission shaft.
In the process of using the Hall rotating speed sensor, the condition that the system judges the sensor fault by mistake to cause the replacement of the workpiece can occur sometimes. However, the replaced sensor cannot directly judge whether the component is damaged or not from the appearance, and cannot judge whether the component is abnormal or not by detecting the resistance through a multimeter (the characteristics of the hall element are abnormal). At present, the function of a Hall rotating speed sensor is usually detected by assembling the Hall rotating speed sensor on a power assembly rack or operating the whole vehicle, and whether the function is abnormal is checked; or returned to the supplier for professionally complete testing on a dedicated rack by a professional tester.
However, the above signal detection method is time-consuming and labor-consuming, and depends much on professional detection equipment, resulting in high detection cost.
Disclosure of Invention
In view of this, the present application provides a signal detection apparatus for a hall tachometer, which can detect the function of the hall tachometer at a low cost.
The following technical scheme is specifically adopted in the application:
a signal detection device of a Hall rotation speed sensor comprises a sensor body, a detection platform, power supply equipment and an oscilloscope;
the detection table comprises a base and a mounting frame, the mounting frame is connected with the base and can move on the base, and the sensor body is connected with the mounting frame;
a first wall of the base is provided with signal teeth which correspond to the sensor body in position;
the sensor body is electrically connected with the power supply equipment and the oscilloscope respectively, the sensor body is configured to output a signal based on the magnetic field change caused by the signal teeth when the mounting rack moves relative to the base, and the first wall is a wall of the base connected with the mounting rack.
Optionally, the first wall of the base is provided with two parallel slide rails, the signal teeth are located between the two slide rails, and the arrangement direction of the signal teeth is parallel to the length direction of the slide rails;
the bottom of the mounting rack is provided with two sliding blocks, and the two sliding blocks are respectively connected with the two sliding rails in a sliding manner;
the sensor fixing seat is arranged at the top of the mounting frame, the position of the sensor fixing seat corresponds to the position of the signal teeth, and the sensor body is located in the sensor fixing seat.
Optionally, the first wall of the base is provided with two parallel walking grooves, the signal teeth are located between the two walking grooves, and the arrangement direction of the signal teeth is parallel to the extending direction of the walking grooves;
the bottom of the mounting rack is provided with two walking wheels which are respectively positioned in the two walking grooves;
the sensor fixing seat is arranged at the top of the mounting frame, the position of the sensor fixing seat corresponds to the position of the signal teeth, and the sensor body is located in the sensor fixing seat.
Optionally, the sensor body is connected with the sensor fixing seat through a bolt and at least one group of gaskets;
the at least one group of gaskets are sleeved on the bolt and are positioned between the sensor body and the sensor fixing seat.
Optionally, the signal teeth comprise a first set of convex teeth and a second set of convex teeth distributed along the sliding direction of the mounting rack;
the first convex tooth group comprises a plurality of first convex teeth, and the distance between two adjacent first convex teeth in the plurality of first convex teeth is the same;
the second convex tooth group comprises a plurality of second convex teeth, and the distance between two adjacent second convex teeth in the plurality of second convex teeth is the same;
the distance between the first convex tooth group and the second convex tooth group is different from the distance between two adjacent first convex teeth, and the distance between the first convex tooth group and the second convex tooth group is different from the distance between two adjacent second convex teeth.
Optionally, the distance between two adjacent first convex teeth is equal to the distance between two adjacent second convex teeth.
Optionally, the sensor body is a voltage-type hall revolution speed sensor, and the device further includes a pull-up resistor;
the sensor body is provided with a power supply end, a grounding end and a signal output end;
the power supply end of the sensor body is connected with a power supply interface of the power supply equipment;
the grounding end of the sensor body is connected with the ground wire interface or the ground of the power supply equipment;
the signal output end of the sensor body is connected with one end of the pull-up resistor, and the other end of the pull-up resistor is connected with the other power supply interface of the power supply equipment; and the signal output end of the sensor body is also connected with a voltage probe of the oscilloscope.
Optionally, the sensor body is a current type hall revolution speed sensor, and the device further comprises a pull-up resistor;
the sensor body is provided with a power supply end and a grounding end;
the power supply end of the sensor body is connected with one end of the pull-up resistor, and the other end of the pull-up resistor is connected with a power supply interface of the power supply equipment; the power supply end of the sensor body is also connected with a current clamp of the oscilloscope;
and the grounding end of the sensor body is connected with the ground wire interface or the ground of the power supply equipment.
Optionally, the sensor body is a current-type hall revolution speed sensor, and the device further comprises a pull-down resistor;
the sensor body is provided with a power supply end and a grounding end;
the power supply end of the sensor body is connected with a power supply interface of the power supply equipment;
the grounding end of the sensor body is connected with one end of the pull-down resistor, and the other end of the pull-down resistor is connected with a ground wire interface of the power supply equipment; or the grounding end of the sensor body is connected with the ground;
and the grounding end of the sensor body is also connected with a current clamp of the oscilloscope.
Optionally, the signal teeth are made of a magnetic conductive material.
The beneficial effects of the embodiment of the application at least lie in:
when the signal detection device of the Hall revolution speed sensor provided by the embodiment of the application is used, the sensor body is fixed on the mounting frame firstly, and then the sensor body is electrically connected with the power supply equipment and the oscilloscope respectively. After the sensor body is electrified, the Hall element of the sensor body can move above the signal teeth and output signals by moving the mounting frame, and then corresponding waveforms are displayed on a display screen of the oscilloscope. Therefore, the signal detection device provided by the embodiment of the application can detect whether the on-off of the Hall rotating speed sensor is normal or not, can also detect whether the function of the Hall rotating speed sensor is normal or not, and has high detection efficiency, low detection cost and good economy.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a signal detection device of a voltage-type hall tachometer provided in an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a possible correspondence relationship between signal teeth and output signals of a Hall rotation speed sensor according to an embodiment of the present disclosure;
FIG. 3 is a front view of an inspection station according to an embodiment of the present disclosure;
FIG. 4 is a side view of an inspection station provided in accordance with an embodiment of the present application;
FIG. 5 is a front view of another inspection station provided in embodiments of the present application;
FIG. 6 is a side view of another inspection station provided in embodiments of the present application;
fig. 7 is a schematic structural diagram of a signal detection device of a current-mode hall tachometer sensor according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of another signal detection device of a current-mode hall tachometer sensor according to an embodiment of the present application.
Reference numerals:
1. a sensor body; 11. a power supply terminal; 12. a ground terminal; 13. a signal output terminal;
2. a detection table; 21. a base; 211. a first wall; 212. signal teeth; 2121. a first set of lobes; 2122. a second set of lobes; 213. a slide rail; 214. a traveling groove; 22. a mounting frame; 221. a slider; 222. a sensor holder; 223. a traveling wheel;
3. a power supply device; 31. a power supply interface; 32. a ground wire interface;
4. an oscilloscope; 41. a voltage probe; 42. a current clamp;
5. a pull-up resistor;
6. and pulling down the resistor.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. The drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the concepts of the application by those skilled in the art with reference to specific embodiments.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
First, some terms referred to in the embodiments of the present application will be briefly described:
the hall revolution speed sensor is a magnetoelectric sensor based on a hall effect, and generally comprises a hall element, a permanent magnet, a signal amplifier, a circuit board and other elements. Hall revolution speed sensors are widely used in automotive applications, for example to detect the revolution speed and position of a camshaft, the revolution speed and position of a crankshaft, and the revolution speed of a transmission shaft of a gearbox. The working principle is that when the rotating mechanism of the sensor is connected with the signal tooth rotating shaft of the object to be measured to rotate, the magnetic field passing through the Hall element generates periodic change, stable pulse signals can be formed through subsequent circuit processing, and the rotating speed of the object to be measured can be obtained by detecting the pulse number in unit time.
An oscilloscope is an instrument for measuring the shape of an alternating current or pulsed current wave, and is composed of a tube amplifier, a scanning oscillator, a cathode ray tube, and the like. The relative magnitude of the waveform amplitude displayed on the display screen of the oscilloscope may be used to reflect the relative magnitude of the maximum value of the voltage applied to the Y-deflection plate of the oscilloscope, and thus the magnitude of the maximum value of the alternating electromotive force generated in the electromagnetic induction.
A regulated power supply is a common power supply device, and can provide stable alternating current or direct current for a load. When the voltage of the power grid or the load fluctuates instantly, the voltage-stabilized power supply can compensate the voltage amplitude and stabilize the voltage amplitude within a certain amplitude.
As shown in fig. 1, an embodiment of the present application provides a signal detection device for a hall tachometer, including a sensor body 1, a detection table 2, a power supply device 3, and an oscilloscope 4.
The sensor body 1 is electrically connected with the power supply device 3 and the oscilloscope 4 respectively.
The power supply apparatus 3 refers to an apparatus capable of supplying electric power. Further, the power supply device 3 can provide the voltage required by the operation for the hall revolution speed sensor, and provide the pull-up voltage required by the output of the hall revolution speed sensor. In the embodiment of the present application, the power supply device 3 may be, for example, a regulated power supply.
The oscilloscope 4 can measure and display the waveform output by the hall revolution speed sensor. Wherein, for different types of Hall revolution speed sensors, probes adopted by the oscilloscope 4 during signal detection are different. For example, for a voltage type hall tacho sensor, the oscilloscope 4 employs a voltage probe 41; for a current mode hall tacho sensor, the oscilloscope 4 employs a current clamp 42.
The detection table 2 comprises a base 21 and a mounting frame 22, the mounting frame 22 is connected with the base 21 and can move on the base 21, and the sensor body 1 is connected with the mounting frame 22. The first wall 211 of the base 21 is provided with an array of signal teeth 212, the signal teeth 212 correspond to the position of the sensor body 1, the sensor body 1 is configured to output a signal based on the magnetic field change caused by the signal teeth 212 when the mounting frame 22 moves relative to the base 21, and the first wall 211 is a wall of the base 21 connected to the mounting frame 22.
In the embodiment of the present application, the number of the signal teeth 212 on the base 21 is plural, and the plural signal teeth 212 are arranged regularly along the moving direction of the mounting frame 22. The sensor body 1 may be located, for example, directly above the signal teeth 212 so as to correspond to the position of each signal tooth 212 during movement of the mounting bracket 22. Wherein the length of each signal tooth 212 is generally perpendicular or approximately perpendicular to the direction of movement of the mounting bracket 22.
The sensor body 1 includes a hall element, a permanent magnet, a signal amplifier, and a circuit board. When the permanent magnet and the hall element are located on the same side of the signal tooth 212, electrons in the hall element of the sensor body 1 uniformly flow from the negative pole to the positive pole in the energized state, but when a magnetic field perpendicular to the hall element exists, the electrons are deflected by the lorentz force, resulting in a potential difference between the hall element and the two sides perpendicular to the direction of the magnetic field, so that voltages are generated on the two sides perpendicular to the direction of the magnetic field, which are generally called hall voltages.
The magnitude of the Hall voltage is in direct proportion to the intensity of a magnetic field perpendicular to the Hall element, and the stronger the magnetic field is, the higher the Hall voltage is; the weaker the magnetic field, the lower the hall voltage. In the signal detection device provided in the embodiment of the present application, the signal tooth 212 is a main cause of the change in the strength of the magnetic field. As the sensor body 1 moves over the signal tooth 212, the air gap between the sensor body 1 and the signal tooth 212 changes, which in turn causes the reluctance of the magnetic circuit to change. When the signal teeth 212 are close to the sensor body 1, magnetic lines of force pass through the Hall element in a concentrated mode, the magnetic field is enhanced, larger Hall voltage can be generated, and the Hall voltage is amplified, shaped and processed to output a high level or a low level set for the sensor body; conversely, when the signal tooth 212 is far away from the sensor body 1, the magnetic field is weakened, and a low level or a high level set for the sensor body 1 is output, so that a square wave signal output is formed, and the square wave signal corresponds to the air gap between the signal tooth 212 and the sensor body 1. The embodiment of the application realizes the detection of the function of the Hall rotating speed sensor based on the corresponding relation.
In the present embodiment, the signal teeth 212 are magnetically conductive material, such as iron. Wherein the signal teeth 212 and the base 21 may be a unitary structure, the signal teeth 212 may be formed by side walls of a plurality of grooves machined directly into the first wall 211 of the base 21, for example. Of course, in other embodiments, the signal teeth 212 and the base 21 may be two separate structures, and the signal teeth 212 may be formed on a separate plate body, and when the signal teeth 212 are needed to be used, the plate body is fixed on the first wall 211 of the base 21. Wherein when signal tooth 212 forms on solitary plate body, monitoring personnel can change the plate body of different tooth pitches for the hall tachometric sensor of different models when signal detection to satisfy multiple detection demand.
When the signal detection device of the hall revolution speed sensor provided by the embodiment of the application is used, the sensor body 1 is fixed on the mounting frame 22, and then the sensor body 1 is electrically connected with the power supply device 3 and the oscilloscope 4 respectively. After the sensor body 1 is powered on, the hall element of the sensor body 1 moves above the signal tooth 212 and outputs a pulse signal by moving the mounting bracket 22, so that a corresponding waveform is displayed on the display screen of the oscilloscope 4. Based on the hall effect, the signal tooth 212 of the signal detection device and the output signal waveform of the hall tachometer displayed by the oscilloscope 4 may have a corresponding relationship as shown in fig. 2. By comparing the corresponding relationship between the signal teeth 212 and the output signal waveform, it can be determined whether the function of the hall revolution speed sensor is normal.
Therefore, the signal detection device provided by the embodiment of the application can detect whether the on-off of the Hall rotating speed sensor is normal or not, can also detect whether the function of the Hall rotating speed sensor is normal or not, and has high detection efficiency, low detection cost and good economy.
Wherein the mounting frame 22 can be moved relative to the base 21 by a variety of structures, two possible structures are described below:
in one possible structure, as shown in fig. 3 and 4, the first wall 211 of the base 21 is provided with two parallel sliding rails 213, the signal teeth 212 are located between the two sliding rails 213, and the arrangement direction of the signal teeth 212 is parallel to the length direction of the sliding rails 213. The bottom of the mounting frame 22 has two sliding blocks 221, and the two sliding blocks 221 are slidably connected with the two sliding rails 213 respectively. The top of the mounting frame 22 has a sensor fixing seat 222, the position of the sensor fixing seat 222 corresponds to the position of the signal tooth 212, and the sensor body 1 is located in the sensor fixing seat 222.
For each slide rail 213, the shape may be a straight line or a curved line, as long as it is ensured that the two slide rails 213 are parallel to each other and the arrangement direction of the plurality of signal teeth 212 is parallel thereto. In general, the shape of the sliding rail 213 is linear, so that a plurality of signal teeth 212 are also arranged along a linear direction, and in two adjacent signal teeth 212, the distance from the first end of one signal tooth 212 to the first end of the other signal tooth 212 is equal to the distance from the second end of the other signal tooth 212 to the second end of the other signal tooth 212, so that the signal teeth 212 have a relatively simple structure and are easy to process. Of course, in other embodiments, the sliding rail 213 may also be a closed circle, such that a plurality of signal teeth 212 are also arranged in a circle concentric with the sliding rail 213, and in two adjacent signal teeth 212, a distance from a first end of one signal tooth 212 to a first end of the other signal tooth 212 is greater than a distance from a second end of the other signal tooth 212 to a second end of the other signal tooth 212, where the first end refers to an end of the signal tooth 212 away from a center of a circle, and the second end refers to an end of the signal tooth 212 close to the center of a circle, such a signal tooth 212 has a relatively complex structure, but may greatly save an occupied area on the base 21, and since the sliding rail 213 is a closed circle, the sensor body 1 may continuously move above the signal tooth 212, thereby satisfying more detection requirements.
Under the driving of an external force, the sliding block 221 at the bottom of the mounting frame 22 can slide along the sliding rail 213, along with the sliding of the mounting frame 22, the sensor body 1 fixed on the mounting frame 22 can pass over the plurality of signal teeth 212 in sequence, and along with the movement of the sensor body 1, a pulse signal output based on the change of the magnetic field in the movement process can be sent to the oscilloscope 4 for waveform display.
The mounting frame 22 can slide on the slide rail 213 at different speeds, so that the sensor body 1 also passes over the plurality of signal teeth 212 at different speeds. The faster the sliding speed of the mounting bracket 22, the faster the sensor body 1 moves above the signal teeth 212, the higher the frequency of the output pulse signal, and the shorter the period of the waveform displayed on the display screen of the oscilloscope 4. Conversely, the slower the sliding speed of the mounting bracket 22, the slower the moving speed of the sensor body 1 above the signal tooth 212, the lower the frequency of the output pulse signal, and the longer the period of the waveform displayed on the display screen of the oscilloscope 4.
In another possible structure, as shown in fig. 5 and 6, the first wall 211 of the base 21 is provided with two parallel traveling grooves 214, and the signal teeth 212 are located between the two traveling grooves 214; the bottom of the mounting frame 22 is provided with two travelling wheels 223, and the two travelling wheels 223 are respectively positioned in the two travelling grooves 214; the top of the mounting frame 22 has a sensor fixing seat 222, the position of the sensor fixing seat 222 corresponds to the position of the signal tooth 212, and the sensor body 1 is located in the sensor fixing seat 222.
For each traveling groove 214, the direction may be a straight line or a curved line, as long as two traveling grooves 214 are ensured to be parallel to each other and the arrangement direction of the plurality of signal teeth 212 is parallel to it. Similar to the shape of the sliding rail 213 in the former possible structure, the traveling groove 214 may extend in a straight line in a general direction, so that the plurality of signal teeth 212 are also arranged in the straight line direction; alternatively, each of the travel slots 214 may form a closed circle such that the plurality of signal teeth 212 are also arranged in a circle concentric with the travel slots 214. Illustratively, road wheels 223 may be universal wheels.
The traveling groove 214 functions to restrict and guide the rolling direction of the traveling wheels 223. In order to prevent the travel wheels 223 from being separated from the travel grooves 214 during rolling, in some embodiments, the groove depth of the travel grooves 214 may be set to be not less than half of the wheel diameter of the travel wheels 223, so that the travel wheels 223 are not easily separated from the travel grooves 214 even at a fast moving speed.
Under the driving of external force, the walking wheels 223 at the bottom of the mounting frame 22 can roll in the walking grooves 214, so that the sensor body 1 fixed on the mounting frame 22 can pass above the signal teeth 212 along with the movement of the mounting frame 22, and along with the movement of the sensor body 1, pulse signals output based on the magnetic field change in the movement process can be sent to the oscilloscope 4 for waveform display.
The mounting frame 22 can move at different speeds in the running grooves 214, so that the sensor body 1 also passes over the plurality of signal teeth 212 at different speeds. The faster the movement speed of the mounting bracket 22, the faster the sensor body 1 moves above the signal teeth 212, the higher the frequency of the output pulse signal, and the shorter the period of the waveform displayed on the display screen of the oscilloscope 4. Conversely, the slower the sliding speed of the mounting bracket 22, the slower the moving speed of the sensor body 1 above the signal tooth 212, the lower the frequency of the output pulse signal, and the longer the period of the waveform displayed on the display screen of the oscilloscope 4.
In some embodiments of the present application, the signal detection device further includes a controller, a servo motor, and a servo actuator, the controller is in signal connection with the servo motor, one end of the servo actuator is connected with the servo motor, and the other end of the servo actuator is connected with the sliding block 221 or the walking wheel 223. The controller may send a control command to the servo motor, so that the servo motor may control the movement and stop of the slider 221 or the traveling wheel 223 based on the control command, and may also control the movement speed, movement distance, and movement direction of the slider 221 or the traveling wheel 223.
The sensor holder 222 is a structure for fixing the sensor body 1 to the mounting frame 22. Illustratively, the sensor mount 222 may be a through hole opened at the top of the mounting bracket 22. When the sensor body 1 is mounted, a part of the sensor body 1 is inserted into the through hole from the top of the mounting bracket 22 so as to be located near the signal teeth 212. Two first mounting holes with the aperture smaller than that of the through hole are arranged on two sides of the through hole; the sensor body 1 is provided with two ear plates, the ear plates are used for preventing the sensor body 1 from falling from the through hole, each ear plate is provided with a second mounting hole, when one part of the sensor body 1 is positioned in the through hole, the two ear plates are abutted to the top of the mounting frame 22, and the two first mounting holes are in one-to-one correspondence with the two second mounting holes. The sensor body 1 is connected with the sensor fixing seat 222 through a bolt and at least one group of gaskets, and the at least one group of gaskets are sleeved on the bolt and are positioned between the sensor body 1 and the sensor fixing seat 222. The gaskets are arranged in groups because the number of the bolts for fixing the sensor body 1 is usually more than one, for example, when there are two bolts, the number of the gaskets in each group of gaskets is two; when three bolts are arranged, the number of the gaskets in each group of gaskets is three, and so on. Of course, there is also a case where the sensor body 1 is fixed by only one bolt, and the number of the spacers in one set of spacers is one.
In some embodiments, a boss may be further provided on the top of the mounting frame 22, and the through hole is located at the center of the boss, and the boss can increase the strength of the mounting position of the sensor body 1.
Taking the situation that the sensor body 1 is fixed by two bolts as an example, assuming that only one group of gaskets is used in the first signal detection, at this time, the two gaskets are respectively sleeved on the screw rods of the two bolts and are located between the lug plates of the boss and the sensor body 1, so as to reduce the vibration brought to the sensor body 1 in the moving process of the mounting frame 22. However, in the next detection, the inspector needs to increase the air gap between the sensor body 1 and the signal tooth 212 (i.e., the distance between the sensor body 1 and the signal tooth 212 when the sensor body 1 is located right above one signal tooth 212), and at this time, a corresponding number of spacers can be added according to the air gap that needs to be increased. That is, the size of the air gap between the sensor body 1 and the signal tooth 212 can be adjusted by increasing or decreasing the thickness of the spacer on the boss, and in general, the air gap can be controlled within 0.2 mm-2.2 mm.
In some implementations of embodiments of the present application, signal teeth 212 include a first set of teeth 2121 and a second set of teeth 2122 distributed along the sliding direction of mount 22. The first convex tooth group 2121 comprises a plurality of first convex teeth, and the distance between two adjacent first convex teeth in the plurality of first convex teeth is the same; the second convex tooth group 2122 comprises a plurality of second convex teeth, and the distance between two adjacent second convex teeth in the plurality of second convex teeth is the same; first set of teeth 2121 and second set of teeth 2122 have a spacing that is different from the spacing of two adjacent first teeth, and first set of teeth 2121 and second set of teeth 2122 have a spacing that is different from the spacing of two adjacent second teeth.
The reason why the distance between two adjacent first teeth in the first tooth group 2121 is the same and the distance between two adjacent second teeth in the second tooth group 2122 is the same is to display a regular waveform on the oscilloscope 4, which varies periodically. If the distance between two adjacent first convex teeth and the distance between two adjacent second convex teeth are distributed irregularly, the waveform displayed on the display screen of the oscilloscope 4 is irregular, so that whether the function of the sensor body 1 is normal or not is difficult to judge.
The reason why the pitch of first set of teeth 2121 and second set of teeth 2122 is not equal to the pitch between teeth in either set is to more clearly distinguish the signal waveforms output by sensor body 1 as it slides over first set of teeth 2121 and over second set of teeth 2122. However, in some embodiments, the spacing between two adjacent first teeth may be equal to the spacing between two adjacent second teeth. Therefore, the same set of cutter can be used for processing two convex tooth groups, and the method is more convenient. Further, for convenience of processing and detection, each tooth may be shaped like a rectangular parallelepiped.
The corresponding electrical connection relationship of the sensor body 1 of different types provided by the embodiment of the present application during signal detection will be further described and explained with reference to fig. 1, 5 and 6.
Referring to fig. 1, the sensor body 1 may be, for example, a voltage-type hall revolution speed sensor, and in this case, the signal detection device further includes a pull-up resistor 5. The sensor body 1 has a power supply terminal 11, a ground terminal 12 and a signal output terminal 13, wherein the power supply terminal 11 of the sensor body 1 is connected with a power supply interface 31 of the power supply device 3; the grounding end 12 of the sensor body 1 is connected with the ground wire interface 32 of the power supply device 3 or the ground; the signal output end 13 of the sensor body 1 is connected with one end of the pull-up resistor 5, and the other end of the pull-up resistor 5 is connected with the other power supply interface 31 of the power supply device 3; the signal output end 13 of the sensor body 1 is also connected with a voltage probe 41 of the oscilloscope 4.
The voltage type hall tacho sensor has 3 stitches: the power supply pin, the signal output pin and the ground pin correspond to the power supply terminal 11, the signal output terminal 13 and the ground terminal 12, respectively.
The working voltage range of the voltage type hall revolution speed sensor is usually 4.75V-16V, and the detector can select the voltage according to the actual requirement, for example, 5V can be selected. The power supply equipment 3 selects a stabilized voltage power supply, a power supply interface 31 of the stabilized voltage power supply is connected with a power supply pin of the sensor body 1 by a lead, and then the stabilized voltage power supply is regulated to provide 5V power supply; then, another power supply interface 31 of the regulated power supply is connected with a signal output pin of the sensor body 1 by using a wire, but a pull-up resistor 5 is required to be added in the middle of the circuit, the resistance value of the pull-up resistor 5 is adjusted according to the detection requirement and the working condition of the sensor body 1, for example, the resistance value can be 1K omega-2K omega, so that the resistance value is kept in a normal working range, and then the regulated power supply is adjusted to provide 5V pull-up voltage for power supply; finally, the ground wire interface 32 of the stabilized voltage power supply is directly connected with the grounding pin of the sensor body 1 by using a lead, or the grounding pin of the sensor body 1 can also be directly connected to the ground. A signal connector and a probe grounding end 12 are taken from a voltage probe 41 of the oscilloscope 4, wherein the signal connector is connected with a signal output pin of the sensor body 1, the probe grounding end 12 is connected with a grounding pin of the sensor body 1 or the ground, and the oscilloscope 4 can display the square wave signal output by the sensor body 1 by moving the mounting frame 22.
Referring to fig. 7, the sensor body 1 may be, for example, a current type hall revolution speed sensor, and in this case, the signal detection device further includes a pull-up resistor 5. The sensor body 1 is provided with a power supply end 11 and a grounding end 12, wherein the power supply end 11 of the sensor body 1 is connected with one end of the pull-up resistor 5, and the other end of the pull-up resistor 5 is connected with a power supply interface 31 of the power supply device 3; the power supply end 11 of the sensor body 1 is also connected with a current clamp 42 of the oscilloscope 4; the ground terminal 12 of the sensor body 1 is connected to the ground terminal 32 of the power supply device 3 or the ground.
The current mode hall tacho sensor has two 2 stitches: the power supply pin and the ground pin correspond to the power supply terminal 11 and the ground terminal 12, respectively.
In the circuit configuration shown in fig. 7, the current type hall tacho sensor outputs a signal through a power supply pin. The working voltage range of the current type hall sensor is usually 5V to 12V, and the inspector can select the voltage according to actual needs, for example, 8V can be selected. The power supply device 3 selects a stabilized voltage power supply, a power supply interface 31 of the stabilized voltage power supply is connected with a power supply pin of the sensor body 1 by using a wire, a pull-up resistor 5 is added in the middle of the circuit, the resistance value of the pull-up resistor 5 is adjusted according to the detection requirement and the working condition of the sensor body 1, for example, the resistance value can be about 2K omega, so that the resistance value is kept in a normal working range, and then the stabilized voltage power supply is adjusted to provide 8V power supply; then, a lead is used for directly connecting the ground wire interface 32 of the voltage-stabilized power supply with a grounding pin of the sensor body 1, or the grounding pin of the sensor body 1 can also be directly connected to the ground; and finally, a signal connector and a probe grounding end 12 are taken from a current clamp 42 of the oscilloscope 4, wherein the signal connector is connected with a power supply pin of the sensor body 1, the probe grounding end 12 is connected with a grounding pin or the ground of the sensor body 1, and the oscilloscope 4 can display the square wave signal output by the sensor body 1 by moving the mounting frame 22.
Referring to fig. 8, when the sensor body 1 is a current-type hall revolution speed sensor, the signal detection device may further include a pull-down resistor 6. The sensor body 1 is provided with a power supply end 11 and a grounding end 12, wherein the power supply end 11 of the sensor body 1 is connected with a power supply interface 31 of the power supply equipment 3; the grounding end 12 of the sensor body 1 is connected with one end of the pull-down resistor 6, and the other end of the pull-down resistor 6 is connected with the ground wire interface 32 of the power supply device 3; alternatively, the ground terminal 12 of the sensor body 1 is connected to the ground; the ground terminal 12 of the sensor body 1 is also connected to the current clamp 42 of the oscilloscope 4.
In the circuit configuration shown in fig. 8, the current type hall revolution speed sensor outputs a signal through a ground pin. The working voltage range of the current type hall sensor is usually 5V to 12V, and the inspector can select the voltage according to actual needs, for example, 8V can be selected. The power supply equipment 3 selects a stabilized voltage power supply, a power supply interface 31 of the stabilized voltage power supply is connected with a power supply pin of the sensor body 1 by a wire, and then the stabilized voltage power supply is regulated to provide 8V power supply; then, a wire is used for directly connecting the ground wire interface 32 of the voltage-stabilized power supply with a grounding pin of the sensor body 1, a pull-down resistor 6 is added in the middle of the circuit, and the resistance value of the pull-down resistor 6 is adjusted according to the detection requirement and the working condition of the sensor body 1, for example, the resistance value can be about 2K omega, so that the normal working range is kept; and finally, a signal connector and a probe grounding end 12 are taken from a current clamp 42 of the oscilloscope 4, wherein the signal connector is connected with a grounding pin of the sensor body 1, the probe grounding end 12 is connected with the ground, and the oscilloscope 4 can display the square wave signal output by the sensor body 1 by moving the mounting frame 22.
To sum up, the signal detection device that this application embodiment provided can carry out signal detection to voltage type hall revolution speed sensor and current type hall revolution speed sensor to except can detecting whether the break-make of hall revolution speed sensor is normal, can also detect whether hall revolution speed sensor's function is normal, detection efficiency is high, and the detection cost who consumes is low, has good economic nature.
In the present application, it is to be understood that the terms "first", "second", "third", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the present application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (9)
1. A signal detection device of a Hall rotation speed sensor is characterized by comprising a sensor body (1), a detection table (2), power supply equipment (3) and an oscilloscope (4);
the detection table (2) comprises a base (21) and a mounting frame (22), the mounting frame (22) is connected with the base (21) and can move on the base (21), and the sensor body (1) is connected with the mounting frame (22);
the sensor comprises a base (21), wherein a first wall (211) of the base (21) is provided with signal teeth (212) which are arranged, the signal teeth (212) correspond to the sensor body (1), the signal teeth (212) comprise a first convex tooth group (2121) and a second convex tooth group (2122) which are distributed along the sliding direction of an installation frame (22), the first convex tooth group (2121) comprises a plurality of first convex teeth, and the distance between two adjacent first convex teeth in the plurality of first convex teeth is the same; the second convex tooth group (2122) comprises a plurality of second convex teeth, and the distance between two adjacent second convex teeth in the plurality of second convex teeth is the same; the distance between the first set of convex teeth (2121) and the second set of convex teeth (2122) is different from the distance between two adjacent first convex teeth, and the distance between the first set of convex teeth (2121) and the second set of convex teeth (2122) is different from the distance between two adjacent second convex teeth;
the sensor body (1) is electrically connected with the power supply device (3) and the oscilloscope (4) respectively, the sensor body (1) is configured to output a signal based on the magnetic field change caused by the signal teeth (212) when the mounting frame (22) moves relative to the base (21), and the first wall (211) is a wall of the base (21) connected with the mounting frame (22).
2. The device according to claim 1, characterized in that the first wall (211) of the base (21) is provided with two mutually parallel sliding rails (213), the signal teeth (212) are located between the two sliding rails (213) and the arrangement direction of the signal teeth (212) is parallel to the length direction of the sliding rails (213);
the bottom of the mounting rack (22) is provided with two sliding blocks (221), and the two sliding blocks (221) are respectively connected with the two sliding rails (213) in a sliding manner;
the top of the mounting frame (22) is provided with a sensor fixing seat (222), the position of the sensor fixing seat (222) corresponds to the position of the signal tooth (212), and the sensor body (1) is positioned in the sensor fixing seat (222).
3. The device according to claim 1, characterized in that the first wall (211) of the base (21) is provided with two parallel walking grooves (214), the signal teeth (212) are positioned between the two walking grooves (214) and the arrangement direction of the signal teeth (212) is parallel to the extension direction of the walking grooves (214);
the bottom of the mounting rack (22) is provided with two walking wheels (223), and the two walking wheels (223) are respectively positioned in the two walking grooves (214);
the top of the mounting frame (22) is provided with a sensor fixing seat (222), the position of the sensor fixing seat (222) corresponds to the position of the signal tooth (212), and the sensor body (1) is positioned in the sensor fixing seat (222).
4. A device according to claim 2 or 3, characterized in that the sensor body (1) is connected with the sensor holder (222) by means of bolts and at least one set of shims;
the at least one group of gaskets are sleeved on the bolts and are positioned between the sensor body (1) and the sensor fixing seat (222).
5. The apparatus of claim 1, wherein a spacing of the adjacent two first teeth is equal to a spacing of the adjacent two second teeth.
6. A device according to any one of claims 1-3, characterized in that the sensor body (1) is a voltage-type hall tacho sensor, the device further comprising a pull-up resistor (5);
the sensor body (1) is provided with a power supply end (11), a grounding end (12) and a signal output end (13);
the power supply end (11) of the sensor body (1) is connected with a power supply interface (31) of the power supply equipment (3);
the grounding end (12) of the sensor body (1) is connected with the ground wire interface (32) of the power supply equipment (3) or the ground;
a signal output end (13) of the sensor body (1) is connected with one end of the pull-up resistor (5), and the other end of the pull-up resistor (5) is connected with another power supply interface (31) of the power supply equipment (3); and the signal output end (13) of the sensor body (1) is also connected with a voltage probe (41) of the oscilloscope (4).
7. A device according to any one of claims 1-3, characterized in that the sensor body (1) is a current-type hall tacho sensor, the device further comprising a pull-up resistor (5);
the sensor body (1) is provided with a power supply end (11) and a grounding end (12);
a power supply end (11) of the sensor body (1) is connected with one end of the pull-up resistor (5), and the other end of the pull-up resistor (5) is connected with a power supply interface (31) of the power supply equipment (3); the power supply end (11) of the sensor body (1) is also connected with a current clamp (42) of the oscilloscope (4);
the grounding end (12) of the sensor body (1) is connected with the ground wire interface (32) of the power supply device (3) or the ground.
8. A device according to any one of claims 1-3, characterized in that the sensor body (1) is a current-type hall tacho sensor, the device further comprising a pull-down resistor (6);
the sensor body (1) is provided with a power supply end (11) and a grounding end (12);
the power supply end (11) of the sensor body (1) is connected with the power supply interface (31) of the power supply equipment (3);
a grounding end (12) of the sensor body (1) is connected with one end of the pull-down resistor (6), and the other end of the pull-down resistor (6) is connected with a ground wire interface (32) of the power supply equipment (3); or the grounding end (12) of the sensor body (1) is connected with the ground;
and the grounding end (12) of the sensor body (1) is also connected with a current clamp (42) of the oscilloscope (4).
9. The device of claim 1, wherein the signal teeth (212) are magnetically permeable material.
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| CN202110451763.8A CN113252931B (en) | 2021-04-26 | 2021-04-26 | Signal detection device of Hall revolution speed sensor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202255446U (en) * | 2011-10-28 | 2012-05-30 | 上海中科深江电动车辆有限公司 | Hall sensor detection device |
| CN108226839A (en) * | 2017-12-27 | 2018-06-29 | 苏州英威腾电力电子有限公司 | The method for detecting abnormality and device of a kind of converter, Hall sensor |
| CN108732525A (en) * | 2018-07-10 | 2018-11-02 | 镇江苏润电子科技有限公司 | Hall sensor module detection device |
| CN208189076U (en) * | 2018-01-09 | 2018-12-04 | 湖南汽车工程职业学院 | A kind of automobile Hall sensor experiment device |
| CN109141507A (en) * | 2018-08-03 | 2019-01-04 | 大陆汽车电子(长春)有限公司 | Hall sensor fault detection method, louver controller and skylight drive system |
| CN211553311U (en) * | 2020-03-25 | 2020-09-22 | 宁波赛福汽车制动有限公司 | Wheel speed signal test and fault simulation test bed |
| CN212321821U (en) * | 2020-04-10 | 2021-01-08 | 九阳股份有限公司 | Signal detection circuit for Hall sensor and cooking utensil |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8890518B2 (en) * | 2011-06-08 | 2014-11-18 | Allegro Microsystems, Llc | Arrangements for self-testing a circular vertical hall (CVH) sensing element and/or for self-testing a magnetic field sensor that uses a circular vertical hall (CVH) sensing element |
| CN203572498U (en) * | 2013-03-29 | 2014-04-30 | 博世（宁波）轻型电动车电机有限公司 | Hall detection device and motor control device comprising same |
| DE102017214166A1 (en) * | 2017-08-14 | 2019-02-14 | Volkswagen Aktiengesellschaft | Speed sensor assembly |
| CN111478523B (en) * | 2020-04-03 | 2021-07-27 | 北京机械设备研究所 | Rotor position detection device and equipment of linear motor |
-
2021
- 2021-04-26 CN CN202110451763.8A patent/CN113252931B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202255446U (en) * | 2011-10-28 | 2012-05-30 | 上海中科深江电动车辆有限公司 | Hall sensor detection device |
| CN108226839A (en) * | 2017-12-27 | 2018-06-29 | 苏州英威腾电力电子有限公司 | The method for detecting abnormality and device of a kind of converter, Hall sensor |
| CN208189076U (en) * | 2018-01-09 | 2018-12-04 | 湖南汽车工程职业学院 | A kind of automobile Hall sensor experiment device |
| CN108732525A (en) * | 2018-07-10 | 2018-11-02 | 镇江苏润电子科技有限公司 | Hall sensor module detection device |
| CN109141507A (en) * | 2018-08-03 | 2019-01-04 | 大陆汽车电子(长春)有限公司 | Hall sensor fault detection method, louver controller and skylight drive system |
| CN211553311U (en) * | 2020-03-25 | 2020-09-22 | 宁波赛福汽车制动有限公司 | Wheel speed signal test and fault simulation test bed |
| CN212321821U (en) * | 2020-04-10 | 2021-01-08 | 九阳股份有限公司 | Signal detection circuit for Hall sensor and cooking utensil |
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