CN114577461A - Detection system for residual life of steering pull rod and automobile - Google Patents
Detection system for residual life of steering pull rod and automobile Download PDFInfo
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- CN114577461A CN114577461A CN202210288302.8A CN202210288302A CN114577461A CN 114577461 A CN114577461 A CN 114577461A CN 202210288302 A CN202210288302 A CN 202210288302A CN 114577461 A CN114577461 A CN 114577461A
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- 238000001514 detection method Methods 0.000 title claims abstract description 54
- 238000004891 communication Methods 0.000 claims description 10
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- 239000000463 material Substances 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 description 11
- 238000004364 calculation method Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 3
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- 238000004458 analytical method Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/2206—Special supports with preselected places to mount the resistance strain gauges; Mounting of supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
- G01L1/225—Measuring circuits therefor
- G01L1/2262—Measuring circuits therefor involving simple electrical bridges
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
A detection system and car of steering linkage remaining life, it includes: the detection circuit comprises a computing device and a detection circuit electrically connected to the computing device; the detection circuit is configured to measure the variation of strain of the steering rod when the steering rod bears the alternating axial acting force in real time and output the variation to the computing device by taking an electric signal as a carrier; the computing means are configured to, after receiving the electrical signal, convert the received electrical signal into force information according to a proportionality coefficient between the alternating axial force to which the tie rod is subjected and the amplitude of the electrical signal, and estimate the remaining life of the tie rod from all records of the force information.
Description
Technical Field
The present disclosure relates to the field of automobiles, and more particularly, to a system for detecting a remaining life of a steering rod and an automobile.
Background
The steering tie rod is an important part in the steering mechanism of the automobile, and directly influences the stability of the operation of the automobile, the running safety and the service life of tires. The durable life of the tie rod is critical to driving safety and can have serious consequences in the event of failure of the tie rod.
The design life of the tie rod is typically required to be 24 kilometres for 90% of cars. However, since the driving habits and demands of users are different, the intensity of the use of the automobile by the users is different. Some users may use the car beyond the design life, which may possibly cause car accidents once the steering rod is broken.
Because the prior art can not evaluate the service life of the steering pull rod in real time, a user can not know the time for replacing the steering pull rod of the automobile, the too early replacement of the steering pull rod can cause waste, and the too late replacement of the steering pull rod can easily cause the steering pull rod to break before the replacement.
Disclosure of Invention
The application provides a detection system of all kinds of tie rod remaining life, it includes: the detection circuit comprises a computing device and a detection circuit electrically connected to the computing device;
the detection circuit is configured to measure the variation of strain of the steering rod when the steering rod bears the alternating axial acting force in real time and output the variation to the computing device by taking an electric signal as a carrier;
the computing means are configured to, after receiving the electrical signal, convert the received electrical signal into force information according to a proportionality coefficient between the alternating axial force to which the tie rod is subjected and the amplitude of the electrical signal, and estimate the remaining life of the tie rod from all records of the force information.
The remaining life of the tie rod calculated by the computing device may guide the replacement of the tie rod, for example, when the remaining life of the tie rod is close to zero, the user may replace the tie rod to avoid fatigue fracture of the tie rod, and waste caused by premature replacement of the tie rod may be avoided because the tie rod is replaced when the remaining life is small.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. Other advantages of the present application may be realized and attained by the instrumentalities and combinations particularly pointed out in the specification and the drawings.
Drawings
The accompanying drawings are included to provide an understanding of the present disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the examples serve to explain the principles of the disclosure and not to limit the disclosure.
FIG. 1 is a schematic structural view of a tie rod in an embodiment of the present application;
FIG. 2 is a partial front view of a steering link in an embodiment of the present application;
FIG. 3 is a schematic top view of a portion of a tie rod in an embodiment of the present application;
FIG. 4 is a schematic top view of a portion of a tie rod in an embodiment of the present application;
fig. 5 is a schematic circuit connection diagram of a detection system in an embodiment of the present application.
Detailed Description
Example one
As shown in fig. 1, fig. 1 shows a structure of a tie rod 1. The steering rod 1 is usually designed as a rod-shaped structure. The steering link 1 is normally subjected to axial alternating axial forces during operation, which include axial tensile forces and axial compressive forces.
The detection system 2 comprises a detection circuit 21 and a calculation device 22. The detection circuit 21 is electrically connected to the computing device 22. The detection circuit 21 is used to detect in real time the strain of the steering rod 1 when it is subjected to alternating axial forces. The computing means 22 is used to estimate the remaining life of the steering rod 1 from the measurement result of the detection circuit 21.
As shown in fig. 2, the sensing circuit 21 includes a first resistive strain gauge 211, a second resistive strain gauge 212, a third resistive strain gauge 213, and a fourth resistive strain gauge 214. The first resistive strain gauge 211, the second resistive strain gauge 212, the third resistive strain gauge 213 and the fourth resistive strain gauge 214 are the same resistive strain gauge, and may be all foil resistive strain gauges. The first, second, third and fourth resistive strain gauges 211, 212, 213 and 214 can each convert a change in strain in the measurement direction thereof of the respective attached areas into a change in resistance.
As shown in fig. 3 and 4, a first resistive strain gauge 211, a second resistive strain gauge 212, a third resistive strain gauge 213, and a fourth resistive strain gauge 214 are attached to the side surface of the tie rod 1. The first and second resistive strain gauges 211 and 212 are disposed at one side of the steering rod 1, and the third and fourth resistive strain gauges 213 and 214 are disposed at the other side of the steering rod 1. That is, the side of the steering rod 1 where the first and second resistive strain gauges 211 and 212 are located in common and the side of the steering rod 1 where the third and fourth resistive strain gauges 213 and 212 are located in common are away from each other.
The first, second, third, and fourth resistive strain gauges 211, 212, 213, and 214 may be configured in a bar shape. The extension directions of the first resistive strain gage 211, the second resistive strain gage 212, the third resistive strain gage 213, and the fourth resistive strain gage 214 are the respective measuring directions. The first resistance strain gauge 211 extends in the axial direction of the steering rod 1, and the second resistance strain gauge 212 extends in a direction perpendicular to the first resistance strain gauge 211. The third resistance strain gauge 213 extends in the axial direction of the steering rod 1, and the fourth resistance strain gauge 214 extends in a direction perpendicular to the third resistance strain gauge 213.
In this way, the first and third resistance strain gauges 211 and 213 are each used to detect the amount of change in strain of the steering rod 1 in the axial direction and convert the amount of change into the amount of change in electrical resistance. The second resistance strain gauge 212 and the fourth resistance strain gauge 214 are each configured to detect a variation in strain of the steering rod 1 in a direction perpendicular to the axial direction, and convert the variation into a variation in resistance.
As shown in fig. 5, the detection circuit 21 further includes a first voltage input terminal 215, a second voltage input terminal 216, a first detection terminal 217 and a second detection terminal 218. The two terminals of the first resistive strain gauge 211 are connected to a first voltage input terminal 215 and a first sensing terminal 217, respectively. The two terminals of the second resistance strain gauge 212 are connected to the second voltage input terminal 216 and the first detection terminal 217, respectively. The two terminals of the fourth resistance strain gauge 214 are connected to the first voltage input terminal 215 and the second detection terminal 218, respectively. The two terminals of the third resistance strain gauge 213 are connected to the second voltage input terminal 216 and the second detection terminal 218, respectively.
The first resistive strain gauge 211, the second resistive strain gauge 212, the third resistive strain gauge 213 and the fourth resistive strain gauge 214 are electrically connected to form a wheatstone bridge, and the change in the strain of the steering rod 1 can be accurately measured by detecting the change in the resistance between the first detecting terminal 217 and the second detecting terminal 218, and the amount of change in the strain is in direct proportion to the alternating axial force applied to the steering rod 1, so that the magnitude and direction of the alternating axial force applied to the steering rod 1 can be obtained from the change in the resistance of the wheatstone bridge. The resistance change of the wheatstone bridge can be expressed by a voltage signal or a current signal between the first detection terminal 217 and the second detection terminal 218.
In this embodiment, after the first voltage input terminal 215 and the second voltage input terminal 216 of the detection circuit 21 are respectively connected to the positive pole and the negative pole of the dc voltage source, an electrical signal, which may be a voltage signal or a current signal, is output between the first detection terminal 217 and the second detection terminal 218.
The computing device 22 may be an in-vehicle host. The computing device 22 is electrically connected to the first detecting terminal 217 and the second detecting terminal 218, and the computing device 22 continuously receives the output electrical signal between the first detecting terminal 217 and the second detecting terminal 218. The magnitude of this electrical signal is proportional to the magnitude of the alternating axial force applied to the steering rod 1. The proportionality coefficient between the alternating axial force to which the tie rod 1 is subjected and the amplitude of the electrical signal can be calibrated in advance in an experimental environment.
The computing means 22 multiplies the electrical signal by the scaling factor to obtain force information which is used to characterize the magnitude and direction of the alternating axial force to which the tie rod 1 is subjected. Since the electric signal supplied from the detection circuit 21 to the calculation device 22 is an analog signal continuous on the time axis, this force information is also analog information continuous on the time axis.
The computing device 22 processes the force information based on a rainflow counting method, counts all the amplitude values of the alternating axial force and the cycle number of each amplitude value, and obtains the remaining life of the steering rod 1 according to all the amplitude values of the alternating axial force, the cycle number of each amplitude value and the relationship between the alternating axial force borne by the steering rod 1 and the cycle number of breakage.
The relationship between the alternating axial force applied to the tie rod 1 and the cycle number of the breaking cycle can be characterized by using a relational expression or a relational curve between the alternating axial force and the cycle number of the breaking cycle.
The relationship between the alternating axial force to which the steering link 1 is subjected and the cycle number of the breaking can be derived from a part fatigue test of such a steering link 1. Under experimental conditions, axial tension and axial pressure under a certain amplitude are applied to the steering rod 1 in a reciprocating manner, and the fracture cycle is recorded when the steering rod 1 is fractured, so that the fracture cycle corresponding to the alternating axial acting force under the amplitude is measured. According to the method, the fracture cycle cycles corresponding to the alternating axial acting force under various amplitudes can be measured. The fracture cycle is used as an independent variable, the amplitude of the alternating axial acting force is used as a dependent variable, linear regression analysis is carried out on the fracture cycle corresponding to the alternating axial acting force under various amplitudes, a relational expression with the fracture cycle as the independent variable and the amplitude of the alternating axial acting force as the dependent variable can be obtained, and the relational expression can represent the relation between the alternating axial acting force borne by the steering rod 1 and the fracture cycle. In a coordinate system with the abscissa as the cycle frequency of fracture and the ordinate as the amplitude of the alternating axial acting force, a curve corresponding to the relational expression is a relational curve between the alternating axial acting force and the cycle frequency of fracture, and the relation between the alternating axial acting force borne by the steering rod 1 and the cycle frequency of fracture can be further characterized by adopting the relational curve.
In the present embodiment, the calculation device 22 can calculate the remaining life of the steering rod 1 by using the following equation:
wherein N is the number of amplitudes of the alternating axial force, NiNumber of cycles corresponding to amplitude of ith alternating axial force, MiIs the cycle of fracture corresponding to the amplitude of the ith alternating axial force, and L is the remaining life of the tie rod 1.
The inverse function of the relation between the alternating axial acting force and the fracture cycle is an equation taking the fracture cycle as a dependent variable and the amplitude of the alternating axial acting force as an independent variable, and the fracture cycle M can be calculated by substituting the amplitude of the ith alternating axial acting force into the inverse function of the relationi(ii) a Or finding the fracture cycle frequency M corresponding to the amplitude of the ith alternating axial acting force from the relation curve between the alternating axial acting force and the fracture cycle frequencyi。
The remaining life of the tie rod 1 is longer as the remaining life L is closer to 1, the remaining life of the tie rod 1 is shorter as the remaining life L is closer to 0, and the remaining life is zero when the remaining life L of the tie rod 1 is equal to 0. The remaining life L of the tie rod 1 calculated by the calculating means 22 can guide the replacement of the tie rod 1, for example, when the remaining life of the tie rod 1 is close to zero, the user can replace the tie rod 1 to avoid fatigue fracture of the tie rod 1, and since the tie rod 1 is replaced when the remaining life is small, waste caused by premature replacement of the tie rod 1 can be avoided.
In an exemplary embodiment, the detection system 2 further includes a display device electrically connected to the computing device 22. The computing device 22 transmits the remaining life of the tie rod 1 to the display device, and drives the display device to display the remaining life in real time. The user can know the remaining life of the tie rod 1 through the display device.
In an exemplary embodiment, the detection system 2 further includes a wireless communication device. The wireless communication device can perform wireless communication with a remote terminal through a wireless network. The wireless communication device is electrically connected to a computing device 22, and the computing device 22 transmits the remaining life of the steering linkage 1 to a remote terminal through the wireless communication device.
The remote terminal may be a computer of a 4S shop selling the automobile or a computer of a main-frame factory manufacturing the automobile. Like this, 4S shop or host computer factory can monitor this tie rod 1' S residual life, can in time remind the user to change tie rod 1 when this residual life is short, promote user experience.
In an exemplary embodiment, the detection system 2 further includes an alert device electrically connected to the computing device 22. The computing device 22 drives the warning device to send out warning information when the remaining life of the tie rod 1 is less than or equal to the preset remaining life, and the warning information is used for reminding a user to replace the tie rod 1.
The preset remaining life is a preset value. The preset value range of the residual life can be 0.05-0.3.
The warning device may be a display screen or a speaker. The warning information may be text information, icon information or picture information displayed on the display screen. The warning message may also be a voice message broadcast by a speaker.
Example two
The difference between the system for detecting the remaining life of the steering link 1 in the second embodiment and the system for detecting the remaining life of the steering link 1 in the first embodiment is only the process of obtaining the remaining life of the steering link 1 by processing the electrical signal by the computing device 22, and for avoiding redundant description, only the differences will be described below.
The computing means 22 multiplies the electrical signal by the scaling factor to obtain force information which is used to characterize the magnitude and direction of the alternating axial force to which the tie rod 1 is subjected.
The computing means 22 then converts the force information into stress information on the basis of the relationship between the alternating axial force experienced by the steering linkage 1 and the stress experienced by the steering linkage 1. The stress information is used to characterize the magnitude and direction of the stress experienced by the tie rod 1. Since the electric signal supplied from the detection circuit 21 to the calculation device 22 is an analog signal continuous on the time axis, both the force information and the stress information are analog information continuous on the time axis.
Finite element analysis is performed on the steering tie rod 1 in advance, and the relationship between the alternating acting force and the stress borne by the steering tie rod 1 can be obtained. The relationship between the alternating force and the stress experienced by the steering link 1 can be simplified to a proportional relationship such that the relationship between the alternating force and the stress experienced by the steering link 1 can be a scaled proportionality coefficient between the stress and the alternating force, which expresses the magnitude of the stress generated in the steering link 1 per unit of alternating axial force. The calculation means 22 multiplies the force information by the scaling factor to obtain stress information.
The calculation device 22 processes the stress information based on a rain flow counting method, counts all the amplitudes of the stress and the cycle number of each amplitude, and obtains the remaining life of the tie rod 1 according to the relationship between all the amplitudes of the stress, the cycle number of each amplitude and the cycle number of the breaking of the tie rod 1.
The relationship between the stress to which the steering rod 1 is subjected and the cycle number of the fracture can be characterized by using an S-N curve of the material from which the steering rod 1 is made. The S-N curve represents a curve of the relationship between the fatigue strength and the fatigue life of a standard test piece under certain cycle characteristics, and is also referred to as a stress-life curve. The S-N curve is described by taking the stress range S of the material standard test piece as a vertical coordinate and taking the cycle of fracture during failure as a horizontal coordinate.
In the present embodiment, the calculation device 22 can calculate the remaining life of the steering rod 1 by using the following equation:
wherein N is the number of amplitudes of the alternating axial force, NiFor the number of cycles corresponding to the magnitude of the ith stress, MiL is the remaining life of the tie rod 1 for the cycle of fracture corresponding to the amplitude of the ith stress.
The cycle number M of the fracture corresponding to the amplitude of the ith stress can be found in the S-N curvei。
The remaining life of the tie rod 1 is longer as the remaining life L is closer to 1, the remaining life of the tie rod 1 is shorter as the remaining life L is closer to 0, and the remaining life is zero when the remaining life L of the tie rod 1 is equal to 0. The remaining life L of the tie rod 1 calculated by the calculating means 22 can guide the replacement of the tie rod 1, for example, when the remaining life of the tie rod 1 is close to zero, the user can replace the tie rod 1 to avoid fatigue fracture of the tie rod 1, and since the tie rod 1 is replaced when the remaining life is small, waste caused by premature replacement of the tie rod 1 can be avoided.
EXAMPLE III
The present embodiment also proposes a vehicle comprising a detection system as described above. The specific structure of the detection system 2 refers to the above embodiments, and since the present vehicle adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is given here.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, or suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (11)
1. A system for detecting the remaining life of a steering link, comprising: the detection circuit comprises a computing device and a detection circuit electrically connected to the computing device;
the detection circuit is configured to measure the variation of strain of the steering rod when the steering rod bears the alternating axial acting force in real time and output the variation to the computing device by taking an electric signal as a carrier;
the computing means are configured to, after receiving the electrical signal, convert the received electrical signal into force information according to a proportionality coefficient between the alternating axial force to which the tie rod is subjected and the amplitude of the electrical signal, and estimate the remaining life of the tie rod from all records of the force information.
2. The sensing system of claim 1, wherein estimating the remaining life of the tie rod from all records of force information comprises:
processing the acting force information based on a rain flow counting method, and counting all amplitude values of the alternating axial acting force and the cycle number of each amplitude value; and
the remaining life of the tie rod is obtained from all the amplitudes of the alternating axial force, the number of cycles of each amplitude and the relationship between the cycles of subjecting the tie rod to the alternating axial force and the breaking cycles.
3. The sensing system of claim 2, wherein the remaining life of the tie rod is derived from all of the amplitudes of the alternating axial force, the number of cycles of each amplitude, and the relationship between the tie rod's exposure to the alternating axial force and the number of cycles to failure, comprising:
the remaining life of the tie rod is calculated using the following equation:
wherein N is the number of amplitudes of the alternating axial force, NiNumber of cycles corresponding to amplitude of ith alternating axial force, MiThe cycle of the fracture corresponding to the amplitude of the ith alternating axial force, and L is the residual life of the steering rod.
4. The detection system of claim 3, wherein the cycle of fracturing is MiIs the cycle of fracture corresponding to the amplitude of the ith alternating axial force in the plot of alternating axial force versus cycle of fracture.
5. The sensing system of claim 1, wherein estimating the remaining life of the tie rod from all records of force information comprises:
converting the acting force information into stress information according to the relation between the alternating axial acting force borne by the steering pull rod and the stress borne by the steering pull rod;
Processing the stress information based on a rain flow counting method, and counting all amplitudes of the stress and the cycle number of each amplitude; and
the remaining life of the tie rod is obtained from all the amplitudes of the stresses, the number of cycles of each amplitude and the stress-life curve of the material from which the tie rod is made.
6. Detection system according to claim 5,
the remaining life of the tie rod is calculated using the following equation:
where N is the number of amplitudes of the alternating axial force, NiFor the number of cycles corresponding to the magnitude of the ith stress, MiThe cycle frequency of the fracture corresponding to the amplitude of the ith stress is L, and the residual service life of the steering pull rod is L;
cycle of fracture MiIs the cycle number of fracture corresponding to the magnitude of the ith stress in the stress-life curve.
7. The detection system according to any one of claims 1 to 6, wherein the detection circuit includes a first resistive strain gauge, a second resistive strain gauge, a third resistive strain gauge and a fourth resistive strain gauge, each attached to a side of the steering rod;
the first resistance strain gauge and the second resistance strain gauge are arranged on one side of the steering pull rod, and the third resistance strain gauge and the fourth resistance strain gauge are arranged on the other side of the steering pull rod;
The measuring directions of the first resistance strain gauge and the third resistance strain gauge are both parallel to the axial direction of the steering pull rod, and the measuring directions of the second resistance strain gauge and the fourth resistance strain gauge are both perpendicular to the axial direction of the steering pull rod;
the first resistance strain gauge, the second resistance strain gauge, the third resistance strain gauge and the fourth resistance strain gauge are connected to form a Wheatstone bridge, and the computing device is electrically connected to the Wheatstone bridge.
8. The detection system of claim 7, wherein the detection circuit further comprises a first voltage input terminal, a second voltage input terminal, a first detection terminal, and a second detection terminal;
two terminals of the first resistance strain gauge are respectively connected with a first voltage input end and a first detection end, two terminals of the second resistance strain gauge are respectively connected with a second voltage input end and a first detection end, two terminals of the fourth resistance strain gauge are respectively connected with a first voltage input end and a second detection end, and two terminals of the third resistance strain gauge are respectively connected with a second voltage input end and a second detection end; the first voltage input end and the second voltage input end are used for being connected with a positive pole and a negative pole of a direct current power supply respectively, and the first detection end and the second detection end are connected to the computing device.
9. The detection system according to claim 1, further comprising a display device, wherein the computing device is configured to transmit the remaining life to the display device and drive the display device to display the remaining life in real time.
10. The detection system of claim 1, further comprising a wireless communication device capable of wirelessly communicating with a remote terminal, the wireless communication device being capable of communicating via a wireless network;
the computing device is configured to transmit the remaining life to a remote terminal via a wireless communication device.
11. A vehicle, characterized in that it comprises a detection system according to any one of claims 1-10.
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| CN202210288302.8A CN114577461A (en) | 2022-03-22 | 2022-03-22 | Detection system for residual life of steering pull rod and automobile |
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| CN202210288302.8A CN114577461A (en) | 2022-03-22 | 2022-03-22 | Detection system for residual life of steering pull rod and automobile |
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