CN218276522U - Fault monitoring device and driving motor for motorcycle - Google Patents

Abstract

The application relates to a fault monitoring device and driving motor for motorcycle, wherein, driving motor sets up on the frame of motorcycle for the operation of motorcycle provides power, fault monitoring device includes: the system comprises an acquisition module and a control module, wherein the acquisition module is connected with the control module, the acquisition module is positioned at the position of a driving motor and comprises at least two acquisition units, each acquisition unit is configured to acquire the operation condition data of the driving motor, the operation condition data acquired by the acquisition module comprise a vibration signal and a temperature signal, and the control module is configured to generate the fault diagnosis data of the driving motor. Through the method and the device, the problem that the fault diagnosis mode of the driving motor for the new energy motorcycle is single and the diagnosis is delayed in the related technology is solved.

Description

Fault monitoring device and driving motor for motorcycle

Technical Field

The application relates to the technical field of new energy vehicle driving motors, in particular to a fault monitoring device and a driving motor for a motorcycle.

Background

The motor driving system is a main function module for driving the new energy motorcycle, the dynamic indexes (maximum torque, maximum power and maximum rotating speed) of the motor driving system determine the overall performance of the new energy motorcycle, and the motor driving system is an important part in the electric automobile. In order to ensure driving safety, the maintenance and maintenance modes of the driving motor are divided into two modes at present, namely, the maintenance once when the driving mileage of the whole vehicle reaches 7500 kilometers or 1 ten thousand kilometers, and the regular maintenance is added at ordinary times. The regular maintenance comprises three aspects of circuit detection, overload detection and cooling system detection. The circuit detection comprises the insulation detection of a motor encoder of a motor; overload detection, including motor overload detection, and observing the power curve of the instrument in a power-on boosting mode; and detecting a cooling system, including a motor and a motor controller cooling liquid circulating refrigeration effect.

However, the motor fault of the new energy motorcycle is mainly diagnosed by appearance abnormal sound and temperature abnormality at present, and the diagnosis mode is single; the bearing wear and the rotor dynamic unbalance cannot be prevented in early stage, and the bearing wear and the rotor dynamic unbalance can only be replaced after a fault occurs, so that the driving safety is influenced.

Aiming at the problems that the fault diagnosis mode of the driving motor for the new energy motorcycle is single and the diagnosis is delayed in the related technology, an effective solution is not provided.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a fault monitoring device and system and a driving motor for a motorcycle, and aims to at least solve the problems that in the related art, the fault diagnosis mode of the driving motor for the new energy motorcycle is single and the diagnosis is delayed.

In a first aspect, an embodiment of the present application provides a fault monitoring device, which is applied to a driving motor for a motorcycle, where the driving motor is disposed on a frame of the motorcycle and is used for providing power for operation of the motorcycle, and the fault monitoring device includes: the system comprises an acquisition module and a control module, wherein the acquisition module is connected with the control module, the acquisition module is located at the position of the driving motor, the acquisition module comprises at least two acquisition units, each acquisition unit is configured to acquire the operation condition data of the driving motor, the operation condition data acquired by the acquisition module comprises a vibration signal and a temperature signal, and the control module is configured to generate the fault diagnosis data of the driving motor.

In some of these embodiments, the acquisition module includes a vibration sensor and a temperature sensor.

In some of these embodiments, the acquisition module includes at least one dual channel sensor, each dual channel sensor including a vibration signal acquisition channel and a temperature signal acquisition channel.

In some of these embodiments, the control module includes a digital signal processor configured to process the operating condition data.

In some embodiments, the driving motor includes a rotor, and the control module further includes a main control chip connected to the digital signal processor, and the main control chip is configured to control the rotor to perform self-balancing calibration.

In some of these embodiments, further comprising: the acquisition module is connected with the control module through the transmission module, and the transmission module is configured to transmit the operating condition data.

In some of these embodiments, further comprising: the acquisition module and the control module are connected with the sending module through the transmission module, and the sending module is used for sending the operating condition data and the fault diagnosis data to terminal equipment.

In a second aspect, an embodiment of the present application provides a driving motor for a motorcycle, including: a drive motor body and a fault monitoring device according to the first aspect above, the fault monitoring device being mounted on the drive motor body.

In some embodiments, a cover is disposed at one end of the driving motor body, and the fault monitoring device includes at least one dual-channel sensor, and each dual-channel sensor is mounted on the cover.

In some embodiments, a transmission module is provided on the motorcycle, and the fault monitoring device can transmit fault diagnosis data to the terminal equipment through the transmission module.

Compared with the prior art, the fault monitoring device and the driving motor for the motorcycle that this application embodiment provided, wherein, driving motor sets up on the frame of motorcycle for the operation of motorcycle provides power, fault monitoring device includes: the system comprises an acquisition module and a control module, wherein the acquisition module is connected with the control module, the acquisition module is positioned at the position of a driving motor and comprises at least two acquisition units, each acquisition unit is configured to acquire the operation condition data of the driving motor, the operation condition data acquired by the acquisition module comprise a vibration signal and a temperature signal, and the control module is configured to generate the fault diagnosis data of the driving motor. Through the application, the problem that the fault diagnosis mode of the driving motor for the new energy motorcycle is single and the diagnosis is delayed in the related technology is solved.

The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the application.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a first schematic structural diagram of a fault monitoring device according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an internal structure of a control module according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a fault monitoring device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a fault monitoring device according to an embodiment of the present application;

fig. 5 is a schematic structural view of a driving motor for a motorcycle according to an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating a process of predicting and self-diagnosing a fault monitoring device according to an embodiment of the present application;

fig. 7 is a schematic view of an application of a driving motor for a motorcycle according to an embodiment of the present application.

Reference numerals: 100. a fault monitoring device; 101. an acquisition module; 102. a control module; 103. a digital signal processor; 104. a main control chip; 105. a transmission module; 106. a sending module; 107. a dual channel sensor; 108. a vehicle control chip; 109. a Wi-Fi module; 110. a CAN bus; 111. an I/O interface; 200. a drive motor body; 201. a rear end cap; 300. a driving motor for a motorcycle; 400. and (4) terminal equipment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural.

The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference herein to "a plurality" means greater than or equal to two. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.

The present embodiment provides a fault monitoring device, which is applied to a driving motor for a motorcycle, wherein the driving motor is arranged on a frame of the motorcycle and is used for providing power for the operation of the motorcycle, fig. 1 is a schematic structural diagram of the driving motor fault monitoring device for the motorcycle of the present embodiment, and as shown in fig. 1, the fault monitoring device includes: the system comprises an acquisition module 101 and a control module 102, wherein the acquisition module 101 is connected with the control module 102, the acquisition module 101 is located at a driving motor, the acquisition module 101 comprises at least two acquisition units, each acquisition unit is configured to acquire operation condition data of the driving motor, the operation condition data acquired by the acquisition module 101 comprises a vibration signal and a temperature signal, and the control module 102 is configured to generate fault diagnosis data of the driving motor.

The driving motor fault monitoring device for the motorcycle can be installed on a driving motor body to perform data acquisition and fault diagnosis on the driving motor, wherein the acquisition of vibration signals is additionally arranged on the basis of the acquisition of temperature signals, so that on one hand, the acquired data are enriched, and multiple reference dimensions are provided for fault diagnosis, so that the control module 102 can identify corresponding fault modes according to the vibration signals and the temperature signals respectively, and the problem of single fault diagnosis mode of the driving motor for the motorcycle is solved; on the other hand, the related art has a single fault diagnosis mode, and fault diagnosis is performed in an off-line mode, that is, the acquired data is stored first, and after the driving motor stops operating, the data is taken out and guided into a third-party platform for fault diagnosis, so that the timeliness is poor, the control module 102 of the embodiment can analyze the acquired vibration signals on line, and can monitor the dynamic balance of the bearing and the rotor of the driving motor at the key part and the fastener in real time, so that the problem of diagnosis lag is solved.

Each acquisition unit can be a sensor with a single acquisition function, and can also be a sensor with multiple acquisition functions.

When analyzing the working condition data, the control module 102 identifies a fault mode according to whether the vibration signal and the temperature signal reach corresponding thresholds or not, and generates fault diagnosis data according to the fault mode; alternatively, a machine learning model is set in the control module 102, and parameters of the machine learning model are set in advance, so that a failure mode can be identified by inputting a vibration signal and a temperature signal into the machine learning model, and failure diagnosis data is generated according to the failure mode.

In one embodiment, the acquisition module 101 includes a vibration sensor and a temperature sensor. The vibration sensor is used for collecting vibration signals, the temperature sensor is used for collecting temperature signals, and the two sensors are independent of each other.

In one embodiment, the acquisition module 101 includes at least one dual channel sensor, each including a vibration signal acquisition channel and a temperature signal acquisition channel. Compared with a discrete device, the integrated device occupies smaller space, is beneficial to layout on the driving motor body, and can be provided with a plurality of dual-channel sensors, for example. Moreover, the double-channel sensor can accurately predict and monitor common faults of unbalance of a bearing and a rotor, screw looseness and the like of the driving motor under severe environments and working conditions of high-speed rotation, vibration, high response and the like.

In one embodiment, the acquisition module 101 includes two dual channel sensors. According to the arrangement, under the condition that one of the two-channel sensors fails, the other two-channel sensor can also provide a data acquisition function, the redundancy control of the fault safety of the driving motor is guaranteed, and the reliability of data transmission is improved.

The rotor is a core component of the driving motor, and due to factors such as manufacturing, installation errors and uneven materials, the mass center of the rotor deviates from the geometric center more or less, namely unbalance exists. When the rotor is rotated at a high speed, unbalance can cause vibration, if the vibration exceeds a certain limit, the performance of a driving motor can be influenced, and the self assembly of the rotor can be damaged. Therefore, how to control the vibration caused by the unbalance of the rotor is a key problem in the use process of the driving motor.

The related art has a technical scheme for identifying unbalanced phases and correcting dynamic balance of a driving motor. Specifically, vibration signals are collected, a phase discrimination sensor is introduced, the phase discrimination sensor outputs a pulse signal corresponding to a phase discrimination mark in the rotation process of the rotor, the pulse signal can be used as a reference signal for phase discrimination, unbalanced phase discrimination is carried out according to the reference signal, unbalanced signals are determined, and then the balance quantity is determined according to the unbalanced signals.

In one embodiment, referring to FIG. 2, the control module 102 includes a digital signal processor 103, the digital signal processor 103 configured to process operating condition data.

In the present embodiment, the digital signal processor 103 is configured to extract fault characteristic information from the vibration signal to identify a fault pattern. The vibration signals comprise three-direction vibration signals along X, Y, Z, wherein each two-direction vibration signal is perpendicular to each other. The digital signal processor 103 performs FFT (Fast Fourier Transform) processing on the three-dimensional vibration signals, identifies an unbalanced signal, and determines a balance amount including a correction mass size and a correction mass position according to an amplitude and a phase of the unbalanced signal. The digital signal processor 103 generates a frequency conversion signal for correcting the operation state of the drive motor based on the balance amount.

In one embodiment, referring to fig. 2, the driving motor includes a rotor, the control module 102 further includes a main control chip 104, the main control chip 104 is connected to the digital signal processor 103, and the main control chip 104 is configured to control the rotor to perform self-balancing calibration.

In this embodiment, the digital signal processor 103 sends the frequency conversion signal to the main control chip 104, and under the condition that the driving motor does not stop, the main control chip 104 controls the rotor to perform self-balancing correction or maintain the original operation state according to the frequency conversion signal, so as to implement early intelligent pre-diagnosis and correction of the dynamic unbalance of the rotor. The main Control chip may be an MCU (micro Control Unit) or a VCU (Vehicle Control Unit).

In one embodiment, referring to fig. 3, the apparatus further comprises: and the transmission module 105, the acquisition module 101 is connected with the control module 102 through the transmission module 105, and the transmission module 105 is configured to transmit the operating condition data. The transmission module 105 may be one or a combination of a CAN bus, an RS485 bus, and an I/O interface.

In one embodiment, referring to fig. 3, the apparatus further comprises: the sending module 106, the acquisition module 101 and the control module 102 are connected with the sending module 106 through the transmission module 105, and the sending module 106 is used for sending the operating condition data and the fault diagnosis data to the terminal equipment.

The sending module 106 is configured to receive or send data via a network, which may include a wireless network provided by a communication provider of the terminal device. For example, the sending module 106 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. For another example, the transmitting module 106 may be a Radio Frequency (RF) module, which is used to communicate with the internet in a wireless manner.

The terminal equipment can be provided with an information platform for storing the operation condition data and the fault diagnosis data of the driving motor. According to the arrangement, the fault data of the driving motor can be collected conveniently, and the early hidden danger existing after the driving motor leaves a factory can be analyzed conveniently.

The following describes the operation of the device for monitoring faults of a vehicle driving motor according to an embodiment.

As shown in fig. 4, the driving motor fault monitoring device for the vehicle includes a dual-channel sensor 107, which is a dual-channel sensor 1 and a dual-channel sensor 2, and whose models are 1c331et _, the device further includes a digital signal processor 103, a vehicle control chip 108, a Wi-Fi module 109, a CAN bus 110 and an I/O interface 111, and the two dual-channel sensors 107, the digital signal processor 103, the vehicle control chip 108, the Wi-Fi module 109 and the I/O interface 111 are hung on the CAN bus 110 and perform data communication through the CAN bus 110.

Fig. 5 shows an installation schematic diagram of the dual-channel sensor, as shown in fig. 5, two dual-channel sensors 107 may be embedded in the rear end cover 201 of the driving motor body 200, and used for collecting vibration signals and temperature signals of the driving motor, the vibration signals and the temperature signals are output through the I/O interface 111, and then transmitted to the digital signal processor 103 through the CAN bus 110, the digital signal processor 103 evaluates and identifies faults through FFT processing according to X, Y, Z three-way vibration signals, extracts fault characteristics, uploads fault diagnosis data to the vehicle control chip 108, and the vehicle control chip 108 outputs a corresponding control strategy.

The digital signal processor 103 extracts the unbalance characteristic signal from the vibration signal to determine the amplitude and the phase of the unbalance characteristic signal, determines the magnitude and the position of a correction parameter according to the amplitude and the phase of the unbalance characteristic signal, sends a frequency conversion signal of the correction parameter by the digital signal processor 103 under the condition of no stop, communicates and transmits the frequency conversion signal to the whole vehicle control chip 108 through the CAN bus 110, and makes a decision by the whole vehicle control chip 108, so that the control rotor is promoted to perform self-balancing correction or maintain the original operation state.

The Wi-Fi module 109 is configured to send out fault diagnosis data of the digital signal processor 103, for example, to an enterprise information platform.

The CAN bus is replaced by the RS485 bus, and the Wi-Fi module is replaced by other wireless communication modules, which are not described in this embodiment.

In one embodiment, fig. 6 shows a schematic diagram of a prediction and self-diagnosis process of the fault monitoring device, as shown in fig. 6, the process includes the following steps:

s601, collecting operation condition data of a driving motor by a dual-channel sensor;

step S602, the digital signal processor constructs a fault feature set based on the operation condition data; specifically, the digital signal processor preprocesses the vibration signal, extracts the characteristic states of the vibration signal under the conditions of time domain, frequency domain and nonlinearity, and makes characteristic evaluation and selection;

step S603, the digital signal processor identifies the fault mode, and can be realized by adopting a neural network or a vector machine and the like;

and step S604, the whole vehicle control chip makes a diagnosis decision based on the fault mode.

In combination with the fault monitoring apparatus of the above embodiments, there is provided in one embodiment a driving motor for a motorcycle, including: the fault monitoring device of driving motor body and above-mentioned any embodiment, fault monitoring device adorns on the driving motor body. The bearing, the rotor, and the fastener may be disposed on the driving motor body, and it should be noted that, for a specific example in this embodiment, reference may be made to the examples described in the above embodiments and optional embodiments, and details are not described here.

In one embodiment, referring to fig. 5, one end of the driving motor body 200 is provided with a cover (e.g., a rear end cover 201), and the fault monitoring device includes at least one dual-channel sensor 107, and each dual-channel sensor 107 is mounted on the cover.

In one embodiment, a transmission module is arranged on the motorcycle, and the fault monitoring device can transmit fault diagnosis data to the terminal equipment through the transmission module.

In this embodiment, the transmission module is electrically connected to the fault monitoring device, and the transmission module may be one or a combination of a CAN bus, an RS485 bus, and an I/O interface. The terminal device may be a server, a desktop computer, a personal computer, a tablet, or a smartphone. By transmitting the fault diagnosis data to the terminal device, the outside can know the problems of the driving motor body 200.

Fig. 7 is a schematic view of an application of a driving motor for a motorcycle, as shown in fig. 7, the driving motor 300 for a motorcycle is in communication connection with a terminal device 400, the driving motor 300 for a motorcycle uploads fault diagnosis data to the terminal device 400 through a communication network, the terminal device 400 is configured to receive the fault diagnosis data, and the terminal device 400 may be a server, a desktop computer, a personal computer, a tablet, or a smart phone.

It should be understood by those skilled in the art that various features of the above-described embodiments can be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments are not described in detail, but rather, all combinations of features which are not inconsistent with each other should be construed as being within the scope of the present disclosure.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A fault monitoring device is applied to a driving motor for a motorcycle, the driving motor is arranged on a frame of the motorcycle and used for providing power for the operation of the motorcycle, and the fault monitoring device is characterized by comprising: the system comprises an acquisition module and a control module, wherein the acquisition module is connected with the control module, the acquisition module is located at the position of the driving motor, the acquisition module comprises at least two acquisition units, each acquisition unit is configured to acquire the operation condition data of the driving motor, the operation condition data acquired by the acquisition module comprises a vibration signal and a temperature signal, and the control module is configured to generate the fault diagnosis data of the driving motor.

2. The fault monitoring device of claim 1, wherein the acquisition module includes a vibration sensor and a temperature sensor.

3. The fault monitoring device of claim 1, wherein the acquisition module comprises at least one dual channel sensor, each dual channel sensor comprising a vibration signal acquisition channel and a temperature signal acquisition channel.

4. The fault monitoring device of claim 1, wherein the control module comprises a digital signal processor configured to process the operating condition data.

5. The fault monitoring device of claim 4, wherein the driving motor comprises a rotor, the control module further comprises a main control chip connected to the digital signal processor, and the main control chip is configured to control the rotor to perform self-balancing calibration.

6. The fault monitoring device of claim 1, further comprising: the acquisition module is connected with the control module through the transmission module, and the transmission module is configured to transmit the operating condition data.

7. The fault monitoring device of claim 6, further comprising: the acquisition module and the control module are connected with the sending module through the transmission module, and the sending module is used for sending the operating condition data and the fault diagnosis data to terminal equipment.

8. A driving motor for a motorcycle, comprising: a drive motor body and a fault monitoring device as claimed in any one of claims 1 to 7 mounted on the drive motor body.

9. The drive motor for motorcycles as claimed in claim 8, wherein a cover is provided at one end of said drive motor body, said failure monitoring device comprises at least one two-channel sensor, each two-channel sensor being mounted on said cover.

10. A driving motor for a motorcycle according to claim 8, wherein a transmission module is provided on the motorcycle, and the fault monitoring apparatus is capable of transmitting fault diagnosis data to a terminal device through the transmission module.

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