Wheel speed sensor detection test bench

Abstract

The invention discloses a wheel speed sensor detection test bench. A stand column A and a stand column B are fixed to the top of the bin body. A test wheel is rotationally mounted between the upright column A and the upright column B; a ring body is fixed to one side of the stand column B and located on the peripheral side of the testing wheel; a plurality of fixing seats are arranged on the ring body, and wheel speed sensor fixing assemblies are mounted on the fixing seats; the wheel speed sensor fixing assembly is fixedly provided with a wheel speed sensor of which the end part is opposite to the test wheel. The ring body is arranged on the periphery of the rotating testing wheel, the wheel speed sensor fixing assembly is installed on the ring body in a matched mode, the wheel speed sensors are installed on the wheel speed sensor fixing assembly in the using process, and therefore the multiple wheel speed sensors can be detected at the same time in the using process; meanwhile, the gap between the sensor and the gear can be adjusted according to requirements during detection, and performance detection of the wheel speed sensor at different intervals is completed.

Description

Technical Field

[0001] The present invention belongs to the technical field of wheel speed sensor detection, and particularly relates to a wheel speed sensor detection test bench. Background Art

[0002] A wheel speed sensor is a sensor used to accurately measure the rotational speed of an automobile wheel, and is one of the most critical sensors in modern automobiles; it is integrated or installed on the wheel hub or drive shaft and rotates synchronously with the wheel; when the wheel rotates, the tooth tips and tooth valleys of the gear alternately pass through the sensor probe, and a detectable signal is generated through the change in the tooth gap, and the gap between the sensor and the gear is usually 0.5 - 1.5 mm during installation.

[0003] To ensure product quality, the manufacturer needs to conduct strict factory inspections on the performance indicators of the wheel speed sensor before leaving the factory; currently, the commonly used sensor performance detection equipment drives a toothed ring to rotate through a detection motor, and the wheel speed sensor detects the rotational speed of the toothed ring. In the prior art, during detection, usually only the output signal of the wheel speed sensor at different rotational speeds of the toothed ring is detected, and then it is judged whether there are defects in the design of the sensor; however, it is difficult to simulate the actual use environment only by changing the rotational speed, such as the change in the induction distance caused by the environment; and the existing sensor performance detection equipment can only complete the performance detection of a single wheel speed sensor at the same time. Summary of the Invention

[0004] The purpose of the present invention is to provide a wheel speed sensor detection test bench. By setting a ring body around the rotating test wheel, and a wheel speed sensor fixing component is cooperatively installed on the ring body, and when in use, the wheel speed sensor is installed on the wheel speed sensor fixing component, so that multiple wheel speed sensors can be detected simultaneously during use, and the gap between the sensor and the gear can be adjusted according to requirements during detection, thus solving the problems raised in the existing background art.

[0005] To solve the above technical problems, the present invention is realized through the following technical solutions:

[0006] The present invention is a wheel speed sensor detection test bench, including a storage body, and a column A and a column B are fixed on the top of the storage body; a test wheel is rotatably installed between the column A and the column B; a ring body is fixed on one side of the column B, and the ring body is located on the outer peripheral side of the test wheel; a plurality of fixing seats are arranged on the ring body, and a wheel speed sensor fixing component is installed on the fixing seat; a wheel speed sensor with its end facing the test wheel is fixed on the wheel speed sensor fixing component; and it further includes a CPU processor, and the CPU processor is connected to the wheel speed sensor.

[0007] Further, the column B is higher than the column A. A shaft is provided at the center of the test wheel. Both ends of the shaft are rotatably mounted on the column A and the column B through bearings respectively. One end of the shaft penetrates through the column A, and a pulley is mounted at the end. A motor is provided in the bin body, and a transmission belt is connected between the output end of the motor and the pulley in a transmission manner. A rectangular opening for the transmission belt to pass through is provided on the top side of the bin body.

[0008] Further, a wheel speed sensor standard component is mounted on one of the wheel speed sensor fixing components. The wheel speed sensor standard component is connected to the CPU processor. The CPU processor uses an LPC2378FBD144 chip. The CPU processor is connected by signal lines to a number of data interfaces fixed on the column B / column A. During use, the plugs of the control wheel speed sensor and the wheel speed sensor standard component are inserted into the data interfaces.

[0009] Further, the wheel speed sensor fixing component includes a displacement slide table fixed on a fixed seat. A wheel speed sensor fixing module is mounted on the displacement platform of the displacement slide table. The displacement slide table is an electric slide table, which includes a slide table base. A lead screw and a driving mechanism for driving the lead screw to rotate are provided on the slide table base. A slider sliding along the upper surface of the slide table base is provided on the lead screw, and a displacement slide table body is provided on the slider. And a guide sleeve is provided on the displacement slide table body, and a guide rod cooperating with the guide sleeve is provided on the slide table base.

[0010] Further, the wheel speed sensor fixing module includes a base block. A jack for inserting the wheel speed sensor and a threaded hole for fixing the wheel speed sensor are provided on the base block.

[0011] Further, the CPU processor is also connected to an alarm and a display. The alarm is selected from a horn, a buzzer, and an indicator light. The CPU processor is installed inside the bin body, and an indicator light is fixed on any one of the wheel speed sensor fixing components.

[0012] The present invention has the following beneficial effects:

[0013] By arranging a ring body around the rotating test wheel and cooperatively installing a wheel speed sensor fixing component on the ring body, during use, the wheel speed sensor is installed on the wheel speed sensor fixing component, so that multiple wheel speed sensors can be detected simultaneously during use, and the gap between the sensor and the gear can be adjusted according to requirements during detection, and the performance detection of the wheel speed sensor at different spacings can be completed.

[0014] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. Description of the Drawings

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the first perspective of the detection test bench of the present invention;

[0017] Figure 2 It is Figure 1 The partial enlarged view at A in

[0018] Figure 3 It is a schematic structural diagram of the second perspective of the detection test bench of the present invention. Specific embodiments

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating the orientation or position relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present invention.

[0021] Please refer to Figures 1-3As shown in the figure, the present invention provides a wheel speed sensor detection test bench, which detects the performance of multiple wheel speed sensors simultaneously during use. Specifically, it includes a housing 1. On the top of the housing 1, a column A 2 and a column B 3 are fixedly arranged with a gap therebetween. The top of the column B 3 is higher than the top of the column A 2. On the side of the column A 2 close to the column B 3, a circular ring body 5 is fixedly installed. Inside the ring body 5, a test wheel 4 is fixedly installed. At the center of the test wheel 4, a shaft 41 is provided. Both ends of the shaft 41 are rotatably installed on the column A 2 and the column B 3 through bearings respectively. One end of the shaft 41 penetrates through the column A 2, and a pulley 42 is installed at the end. A motor is arranged inside the housing 1, and a transmission belt 12 is connected between the output end of the motor and the pulley 42 in a transmission manner. A rectangular opening 11 for the transmission belt 12 to pass through is arranged on the top side of the housing 1. At the same time, in order to facilitate the detection of the performance of the wheel speed sensor according to requirements during use, a plurality of wheel speed sensors with their ends facing the test wheel 4 are installed on the ring body 5 in a matching manner. And the wheel speed sensors are connected to a CPU processor. Then, during use, the test wheel 4 is controlled to rotate at a rated speed, and then the wheel speed sensors transmit the detected signals to the CPU processor for processing, and the performance of the wheel speed sensors is determined after processing the obtained signals.

[0022] Based on the above, in order to facilitate the installation of the wheel speed sensor during use, several fixing seats 50 are arranged on the ring body 5. A wheel speed sensor fixing component is installed on the fixing seat 50. Then, during use, the wheel speed sensor is installed on the wheel speed sensor fixing component, and at this time, the end of the wheel speed sensor is controlled to face the teeth of the test wheel 4.

[0023] Based on the above settings, in order to facilitate the judgment of the performance of the wheel speed sensor, two wheel speed sensor standard parts are installed on the ring body 5. They rotate at a rated speed along with the test wheel 4 during use to obtain readings under standard conditions, and the above readings are used as standard readings. Then, during use, the readings of the wheel speed sensor to be detected are read, and the performance of the wheel speed sensor to be detected is determined by comparing the readings with the standard readings.

[0024] Specifically, the wheel speed sensor standard part is connected to the CPU processor. The CPU processor uses an LPC2378FBD144 chip. At the same time, in order to facilitate the wiring control of the wheel speed sensor to be detected and the wheel speed sensor standard part during use, several data interfaces are fixed on the column B 3. The data interfaces are connected to the CPU processor through signal lines. And during installation, the plugs of the wheel speed sensor and the wheel speed sensor standard part are controlled to be inserted into the data interfaces.

[0025] During use, to facilitate the timely replacement of the wheel speed sensor that has completed detection, the CPU processor is also connected to an alarm and a display. The alarm is an indicator light, and in actual use, an indicator light is fixed on each wheel speed sensor fixing component. Then, during use, when a wheel speed sensor is installed on the wheel speed sensor fixing component, the CPU processor starts timing. When the wheel speed sensor detects a stable speed signal and lasts for 100 s, it is determined that the detection of this wheel speed sensor is completed. When the detection is completed and the performance of the wheel speed sensor is qualified, the indicator light turns green at this time; when the detection is completed and the performance of the wheel speed sensor is unqualified, the indicator light turns red at this time; conversely, when the detection is not completed, the indicator light does not light up; when there is no wheel speed sensor installed on this wheel speed sensor fixing component, that is, no speed signal is detected at this station, the indicator light turns yellow at this time.

[0026] During use, to facilitate the installation and removal of the wheel speed sensor and the wheel speed sensor standard part, and at the same time adjust the distance between the end of the wheel speed sensor and the wheel speed sensor standard part and the test wheel 4 according to requirements during use, the wheel speed sensor fixing component provided by the present invention includes a displacement slide table 51 fixed on a fixed seat 50; during use, by controlling the movement of the displacement slide table 51, the distance between the end of the wheel speed sensor and the wheel speed sensor standard part and the test wheel 4 is adjusted.

[0027] In a possible implementation manner, the displacement slide table 51 is an electric slide table, and its slide base is provided with a lead screw and a driving mechanism for driving the lead screw to rotate; a slider that slides along the upper surface of the slide base is arranged on the lead screw, and a displacement slide table body is arranged on the slider; and a guide sleeve is arranged on the displacement slide table body, and a guide rod that cooperates with the guide sleeve is arranged on the slide base. Then, during use, when the motor as the driving mechanism rotates, the rotating motor drives the displacement slide table body on the displacement slide table 51 to move. By detecting and controlling the moving distance of the displacement slide table body, the distance between the end of the wheel speed sensor and the wheel speed sensor standard part and the test wheel 4 is adjusted during use.

[0028] Based on the above, to facilitate the installation of the wheel speed sensor, a wheel speed sensor fixing module 52 is installed on the displacement platform of the displacement slide table 51; and the wheel speed sensor fixing module 52 includes a base block 520, and the base block 520 is provided with a jack 521 for inserting the wheel speed sensor and a threaded hole 522 for fixing the wheel speed sensor.

[0029] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0030] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A wheel speed sensor detection test bench, characterized in that: It comprises a warehouse body (1), on the top of which a column A (2) and a column B (3) are fixed; A test wheel (4) is rotatably mounted between the column A (2) and the column B (3); A ring body (5) is fixed on one side of the column B (3), and the ring body (5) is located on the outer peripheral side of the test wheel (4); A plurality of fixing seats (50) are arranged on the ring body (5), and a wheel speed sensor fixing assembly is installed on the fixing seat (50); A wheel speed sensor with its end facing the test wheel (4) is fixed on the wheel speed sensor fixing assembly; The device also includes a CPU processor connected to the wheel speed sensor.

2. A wheel speed sensor detection test bench according to claim 1, characterized in that: The column B (3) is higher than the column A (2); a shaft (41) is provided at the center of the test wheel (4); two ends of the shaft (41) are rotatably mounted on the column A (2) and the column B (3) respectively through bearings; One end of the shaft (41) passes through the column A (2), and a pulley (42) is installed at the end thereof; a motor is arranged in the warehouse body (1), and a transmission belt (12) is connected between the output end of the motor and the pulley (42); The top side of the warehouse body (1) is provided with a rectangular opening (11) for the transmission belt (12) to pass through.

3. A wheel speed sensor detection test bench according to claim 1 or 2, characterized in that: A wheel speed sensor standard part is installed on the wheel speed sensor fixing assembly, and the wheel speed sensor standard part is connected to the CPU processor.

4. A wheel speed sensor detection test bench according to claim 3, characterized in that: The CPU processor adopts LPC2378FBD144 chip.

5. The wheel speed sensor detection test bench according to claim 3, characterized in that: The CPU processor is connected to a plurality of data interfaces fixed on the column B (3) / column A (2) via signal lines; When in use, the plugs of the control wheel speed sensor and the wheel speed sensor standard part are inserted into the data interface.

6. A wheel speed sensor detection test bench according to claim 5, characterized in that: The wheel speed sensor fixing assembly comprises a displacement slide (51) fixed on a fixing seat (50), and a wheel speed sensor fixing module (52) is installed on the displacement platform of the displacement slide (51).

7. A wheel speed sensor test bench according to claim 6, characterized in that: The displacement slide (51) is an electric slide, which comprises a slide base, on which a screw rod and a driving mechanism for driving the screw rod to rotate are arranged; The screw rod is provided with a slider which slides along the upper surface of the slide base, and the slider is provided with a displacement slide body; and the displacement slide body is provided with a guide sleeve, and the slide base is provided with a guide rod which cooperates with the guide sleeve.

8. A wheel speed sensor detection test bench according to claim 6 or 7, characterized in that: The wheel speed sensor fixing module (52) comprises a base block (520), and the base block (520) is provided with a plug hole (521) for inserting the wheel speed sensor, and a threaded hole (522) for fixing the wheel speed sensor.

9. The wheel speed sensor detection test bench according to claim 1, characterized in that: The CPU processor is also connected to an alarm and a display; The alarm device is selected from a speaker, a buzzer, and an indicator light.

10. A wheel speed sensor detection test bench according to claim 9, characterized in that: The CPU processor is installed inside the warehouse body (1), and an indicator light is fixed on any of the wheel speed sensor fixing components.

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