CN114754814B - Device and method for measuring instantaneous torque and rotational speed of range extender - Google Patents
Device and method for measuring instantaneous torque and rotational speed of range extender Download PDFInfo
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- CN114754814B CN114754814B CN202210375314.4A CN202210375314A CN114754814B CN 114754814 B CN114754814 B CN 114754814B CN 202210375314 A CN202210375314 A CN 202210375314A CN 114754814 B CN114754814 B CN 114754814B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D9/00—Recording measured values
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/05—Digital input using the sampling of an analogue quantity at regular intervals of time, input from a/d converter or output to d/a converter
Abstract
The application relates to a device and a method for measuring instantaneous torque and rotating speed of a range extender, wherein the system comprises: the device comprises a data acquisition module, a conversion module and a communication module; the data acquisition module is connected with the conversion module; the conversion module is also connected with the communication module; the data acquisition module is used for acquiring torque information and rotation speed information of the range extender in real time; the conversion module is used for converting the torque information and the rotating speed information of the range extender into a preset format and sending the torque information and the rotating speed information of the preset format to the communication module; and the communication module is used for sending the torque information and the rotation speed information meeting the preset requirements to the upper computer in a preset communication mode. According to the device and the method for measuring the instantaneous torque and the rotating speed of the range extender, the data acquisition module is used for high-frequency acquisition, and the acquired signals are sent to the upper computer for control.
Description
Technical Field
The application relates to the technical field of range extenders, in particular to a device and a method for measuring instantaneous torque and rotating speed of a range extender.
Background
Under the guidance of a dual-carbon target, a range-extending hybrid system which is one of new energy power systems is widely focused on due to the strong cruising ability of the range-extending hybrid system. Controlling the start and stop of the range extender is one of the core technologies of the range extender hybrid system. The range extender is a core component in a range-extending hybrid system and is a nonlinear strong coupling system consisting of an internal combustion engine and a generator. Coordinated control of the internal combustion engine and the generator with respect to torque is a serious difficulty in controlling the starting and stopping of the range extender. With the development of artificial intelligence, the intelligent information acquisition technology is widely applied in the technical field of range extenders. In the key direction of realizing intelligent information acquisition, the frequency of acquisition signals is improved, the distortion of the acquisition signals is avoided, and the key point of breakthrough required for realizing the signal acquisition of a range extender in the future is realized.
Regarding the aspect of collecting signals by the range extender, the application of China in patent number CN202110674088.5 provides a device for collecting and measuring the rotating speed of a bench test of the range extender.
However, the scheme has the defects that after the rotation speed signal acquired by the test bed is analyzed by the power analyzer, the sampling frequency is too low, the sampling signal is distorted, the main characteristics cannot be distinguished, and the complete technical support for the increase Cheng Qiqi stop strategy cannot be provided.
Disclosure of Invention
In view of the above, it is necessary to provide a device and a method for measuring instantaneous torque and rotational speed of a range extender, which are used for solving the problems of low sampling frequency and distortion of the collected signals in the prior art.
In order to achieve the technical purpose, the application adopts the following technical scheme:
in a first aspect, the present application provides a range extender transient torque and rotational speed measurement device, comprising: the device comprises a data acquisition module, a conversion module and a communication module; the data acquisition module is connected with the conversion module; the conversion module is also connected with the communication module;
the data acquisition module is used for acquiring torque information and rotation speed information of the range extender in real time;
the conversion module is used for converting the torque information and the rotating speed information of the range extender into a preset format and sending the torque information and the rotating speed information of the preset format to the communication module;
and the communication module is used for sending the torque information and the rotation speed information meeting the preset requirements to the upper computer in a preset communication mode.
Preferably, the data acquisition module comprises a detection module and a sampling module;
the detection module is used for detecting the change conditions of the torque information and the rotation speed information of the range extender;
and the sampling module is used for acquiring the torque signal and the rotating speed signal of the range extender according to a preset acquisition frequency.
Preferably, the conversion module comprises a linear relation verification module and a digital signal conversion module;
the linear relation verification module is used for receiving the torque signal and the rotating speed signal of the range extender and verifying whether the torque signal and the rotating speed signal of the range extender are in a linear relation or not;
the digital signal conversion module is used for converting the torque signal and the rotating speed signal of the range extender in a linear relation into digital signals and sending the digital signals to the detection module.
Preferably, the communication module comprises a communication preparation module and a sending module;
a communication preparation module for checking whether the connection of each module of the extended range hybrid system is normal;
and the sending module is used for sending the digital signal to the upper computer in a preset format.
Preferably, the communication module is a CAN communication module, and the message is a CAN message.
Preferably, the display module is further included; the display module is used for displaying the torque information and the rotating speed information of the range extender, the state of the communication module and the message sending state, which are acquired by the data acquisition module.
In a second aspect, the present application further provides a method for measuring instantaneous torque and rotational speed of a range extender, where the apparatus for measuring instantaneous torque and rotational speed of a range extender based on any one of the above implementations includes:
the torque information and the rotating speed information of the range extender are acquired in real time through the data acquisition module;
converting the torque information and the rotation speed information of the range extender into a preset format through a conversion module, and sending the torque information and the rotation speed information of the preset format to a communication module;
and transmitting the torque information and the rotation speed information meeting the preset requirements to the upper computer in a preset communication mode through the communication module.
Preferably, the torque information and the rotation speed information of the range extender are collected in real time through the data collection module, and the method comprises the following steps:
detecting the change condition of torque information and rotation speed information of the range extender in real time;
and acquiring the change conditions of the torque information and the rotation speed information of the range extender at a preset acquisition frequency to obtain a torque signal and a rotation speed signal of the range extender.
Preferably, the conversion module converts the torque information and the rotation speed information of the range extender into a preset format, and sends the torque information and the rotation speed information in the preset format to the communication module, and the communication module further comprises:
acquiring torque signals and rotating speed signals of the range extender at any moment at least three times;
taking torque signals and rotating speed signals of the range extender at any time twice to establish a linear relation;
and verifying whether the linear relation is accurate or not by using the torque signal and the rotating speed signal of the range extender at any time of the third time.
Preferably, the method for transmitting the torque information and the rotation speed information meeting the preset requirements to the upper computer in a preset communication mode through the communication module comprises the following steps:
storing the torque signal and the rotating speed signal of the range extender as messages by using preset data bits to obtain messages containing the torque signal and the rotating speed signal of the range extender;
and sending the message containing the torque signal and the rotating speed signal of the range extender to an upper computer in a preset message format.
The beneficial effects of adopting the embodiment are as follows: according to the device for measuring the instantaneous torque and the instantaneous rotation speed of the range extender, provided by the application, the data acquisition module is used for directly carrying out high-frequency acquisition on the instantaneous torque and the instantaneous rotation speed of the range extender, so that the acquired signal is ensured not to be distorted, the acquired signal is converted into a digital signal through the conversion module, and the digital signal is sent to the upper computer by the communication module to control the range extender mixed system, so that the high-frequency acquisition on the instantaneous torque and the instantaneous rotation speed is realized, and the distortion rate of the signal is reduced.
Drawings
FIG. 1 is a schematic diagram of an embodiment of a device for measuring instantaneous torque and rotational speed of a range extender according to the present application;
fig. 2 is a schematic flow chart of an embodiment of a method for measuring instantaneous torque and rotational speed of a range extender according to the present application.
Detailed Description
The following detailed description of preferred embodiments of the application is made in connection with the accompanying drawings, which form a part hereof, and together with the description of the embodiments of the application, are used to explain the principles of the application and are not intended to limit the scope of the application.
In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases 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 skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The application provides a device and a method for measuring instantaneous torque and rotating speed of a range extender, which are respectively described below.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a device for measuring instantaneous torque and rotational speed of a range extender, and in a specific embodiment of the application, an experimental bench for measuring instantaneous torque and instantaneous rotational speed of a range extender with a small Kang Dongli range extender is used for explanation, and an apparatus for measuring instantaneous torque and rotational speed of a range extender is disclosed, which comprises: a data acquisition module 10, a conversion module 20 and a communication module 30; the data acquisition module 10 is connected with the conversion module 20; the conversion module 20 is also connected with the communication module 30;
the data acquisition module 10 is used for acquiring torque information and rotation speed information of the range extender in real time;
the conversion module 20 is configured to convert the torque information and the rotation speed information of the range extender into a preset format, and send the torque information and the rotation speed information of the preset format to the communication module 30;
the communication module 30 is configured to send a message to the upper computer in a preset communication manner with the torque information and the rotation speed information meeting the preset requirements.
In the above embodiment, the data acquisition module 10 is used to acquire the rotation speed and torque signals sent by the torque flange in real time and high frequency, then the conversion module 20 is used to convert the acquired rotation speed and torque frequency signals into digital signals, the acquisition controller is connected with the industrial personal computer network through the ethernet, and the industrial personal computer network receives the acquired digital signals and then sends messages to the upper computer in a specific message format, and the upper computer controls the program-increasing hybrid system according to the message information.
Compared with the prior art, the device for measuring the instantaneous torque and the rotational speed of the range extender provided by the embodiment directly carries out high-frequency acquisition on the instantaneous torque and the instantaneous rotational speed of the range extender through the data acquisition module 10, so that the acquired signal is ensured not to be distorted, the acquired signal is converted into the digital signal through the conversion module 20, the digital signal is sent to an upper computer through the communication module 30 to control the range extender mixing system, the high-frequency acquisition on the instantaneous torque and the instantaneous rotational speed is realized, and the distortion rate of the signal is reduced.
In some embodiments of the present application, the data acquisition module 10 includes a detection module and a sampling module;
the detection module is used for detecting the change conditions of the torque information and the rotation speed information of the range extender;
and the sampling module is used for acquiring the torque signal and the rotating speed signal of the range extender according to a preset acquisition frequency.
In the above embodiment, the detection module is an HBM T40B-DU2 digital torque sensor, and because the interface of the torque flange access cross-river power analyzer used by the well test stand adopts the RS422 interface to meet TTL (transistor-transistor logic level) level signal specification, the high voltage is equivalent to logic 1, and the low voltage is equivalent to logic 0. Therefore, a digital signal acquisition card can be adopted, the sampling module is an NI 9041 type acquisition card, the change condition of torque information and rotation speed information of the range extender is detected through an HBM T40B-DU2 digital torque sensor, the HBM T40B-DU2 digital torque sensor is connected with the NI 9041 type acquisition card, the HBM T40B-DU2 digital torque sensor sends the detection condition to the NI 9041 type acquisition card, and the sampling frequency of the NI 9041 type acquisition card is 10Mhz.
It should be noted that, after the data acquisition module 10 acquires the rotation speed signal and the torque signal of the range extender, the accuracy of the signals is also verified, that is, the signals are compared with the rotation speed signal and the torque signal acquired by the power analyzer for analysis. According to actual measurement results, in a static state of the range extender, the data acquired and calculated by the bench test system are basically consistent with the WT1800E power analyzer, and the error exists at the 2 nd position after the decimal point of the torque data and is about 1% of the error; under the stable running state of the range extender, the data acquired and calculated by the bench test system are basically consistent with the power analyzer of the cross river WT1800E, the torque error is about 1.4%, and the rotating speed is consistent.
In some embodiments of the present application, the conversion module 20 includes a linear relationship verification module and a digital signal conversion module 20;
the linear relation verification module is used for receiving the torque signal and the rotating speed signal of the range extender and verifying whether the torque signal and the rotating speed signal of the range extender are in a linear relation or not;
the digital signal conversion module 20 is configured to convert the torque signal and the rotation speed signal of the range extender in a linear relationship into digital signals, and send the digital signals to the detection module.
In the above embodiment, the torque signal of the range extender and the output frequency should have a linear relationship, and as can be seen from the specification of the HBM T40B-DU2 digital torque sensor, when the torque is 0n×m, the output frequency is 60KHz; when the torque is 500N m, the output frequency is 90KHz; when the torque is-500 n x m (reverse), the output frequency is 30KHz. The linear relation verification module may adopt a linear conversion mode 500/(90-60) =y/(x-60), where x is the frequency and y is the torque (forward direction). And then, the torque information which is actually collected is arbitrarily taken for verification, and whether the linear relation is accurate or not is judged.
The digital signal conversion module 20 is a CRIO 9039 controller, and is used for calculating and converting the rotating speed and torque signals acquired by the NI 9041 acquisition card into digital signals and then connecting the acquisition controller with an industrial personal computer network through an Ethernet. The acquisition point signals in a linear relationship are converted into digital signals and sent to the communication module 30 in an ethernet manner.
In some embodiments of the present application, the communication module 30 includes a communication preparation module and a transmitting module;
a communication preparation module for checking whether the connection of each module of the extended range hybrid system is normal;
and the sending module is used for sending the digital signal to the upper computer in a preset format.
In the above embodiment, the communication preparation module checks the connection status between the industrial personal computer and the collection device before performing communication, and the industrial personal computer is connected with the communication module 30 by the TCP/IP ethernet mode, and determines that the CAN receiving end program has been run.
The transmitting module transmits through a CAN data frame, wherein the first 8 bits of the CAN data frame represent the rotating speed value, and the last 8 bits represent the torque value, and the data in the CAN data frame are 16-ary.
In some embodiments of the present application, the communication module 30 is a CAN communication module 30, and the message is a CAN message.
In the above embodiment, the CAN communication module 30 has the characteristics of multiple main control, softness, high communication speed, long communication distance, and the like, and is suitable for performing automobile communication, and the message sent by the CAN communication is a CAN message, and the data is sent outwards in a Motorola format or an INTEL format of the CAN message.
In some embodiments of the present application, the display module 40 is further included; the display module 40 is used for displaying the torque information and the rotation speed information of the range extender, the state of the communication module 30 and the message sending state acquired by the data acquisition module 10.
In the above embodiment, the display module 40 is a display screen, and the torque information and the rotation speed information of the range extender, the state of the communication module 30 and the message sending state acquired by the data acquisition module 10 can be intuitively displayed by the display module 40, so that when an abnormality occurs, an operator can also immediately process the information. It will be appreciated that the display module 40 may also display an operation interface for the operator to operate.
Referring to fig. 2, fig. 2 is a schematic flow chart of an embodiment of a method for measuring instantaneous torque and rotational speed of a range extender provided by the present application, and the application further provides a method for measuring instantaneous torque and rotational speed of a range extender, based on the device for measuring instantaneous torque and rotational speed of a range extender in any one of the above implementation modes, including:
s201, acquiring torque information and rotation speed information of the range extender in real time through a data acquisition module 10;
s202, converting the torque information and the rotation speed information of the range extender into a preset format through the conversion module 20, and sending the torque information and the rotation speed information of the preset format to the communication module 30;
s203, transmitting the torque information and the rotation speed information meeting the preset requirements to the upper computer in a preset communication mode through the communication module 30.
In the above embodiment, by using the device for measuring the instantaneous torque and the rotational speed of the range extender, the torque information and the rotational speed information of the range extender are collected to obtain the high-frequency collected signal, so as to reduce the distortion of the signal, then the collected signal is converted into the digital signal, the digital signal CAN be identified by the industrial personal computer, the upper computer and the like, and the digital signal is sent to the communication module 30 through the TCP/IP, and the communication module 30 reads the digital signal to generate the CAN message and sends the CAN message to the upper computer, so that the upper computer CAN control the range-extending hybrid system.
In some embodiments of the present application, the data acquisition module 10 acquires the torque information and the rotation speed information of the range extender in real time, including:
detecting the change condition of torque information and rotation speed information of the range extender in real time;
and acquiring the change conditions of the torque information and the rotation speed information of the range extender at a preset acquisition frequency to obtain a torque signal and a rotation speed signal of the range extender.
In the embodiment, the preset acquisition frequency is 10MHz, and the torque information and the rotation speed information of the range extender are acquired in real time at a high frequency and are not analyzed by the power analyzer, so that the power analyzer is prevented from reducing the sampling frequency of the acquisition signal, and distortion is avoided.
In some embodiments of the present application, the conversion module 20 converts the torque information and the rotation speed information of the range extender into a preset format, and sends the torque information and the rotation speed information in the preset format to the communication module 30, and further includes:
acquiring torque signals and rotating speed signals of the range extender at any moment at least three times;
taking torque signals and rotating speed signals of the range extender at any time twice to establish a linear relation;
and verifying whether the linear relation is accurate or not by using the torque signal and the rotating speed signal of the range extender at any time of the third time.
In the above embodiment, when the linear relationship between the torque and the frequency cannot be directly obtained from the specification of the sensor, a linear equation relationship may be established by taking the torque signal and the rotation speed signal of the range extender at any time twice, and verifying the torque signal and the rotation speed signal of the range extender at any time once again, so as to determine whether the collected linear relationship between the torque signal and the frequency is reliable. It will be appreciated that the data collected is more reliable when the collected torque signal is linear with frequency.
In some embodiments of the present application, the communication module 30 sends the torque information and the rotation speed information meeting the preset requirements to the upper computer in a preset communication manner, including:
storing the torque signal and the rotating speed signal of the range extender as messages by using preset data bits to obtain messages containing the torque signal and the rotating speed signal of the range extender;
and sending the message containing the torque signal and the rotating speed signal of the range extender to an upper computer in a preset message format.
In the above embodiment, the information transmission between the automobiles is mainly CAN communication, and the state of the automobiles CAN be quickly transmitted through CAN communication, the communication module 30 generates a CAN message according to the collected torque signal and the rotation speed signal, the data frame in the CAN message contains the collected torque signal and the rotation speed signal, and the CAN message is set to be in Motorola format or INTEL format for being sent outwards, such as an upper computer.
In summary, according to the device and the method for measuring the instantaneous torque and the instantaneous rotation speed of the range extender provided by the application, the data acquisition module 10 is used for directly carrying out high-frequency acquisition on the instantaneous torque and the instantaneous rotation speed of the range extender, so that the acquired signal is ensured not to be distorted, the conversion module 20 is used for converting the acquired signal into the digital signal, the communication module 30 is used for sending the digital signal to an upper computer to control a range-extending hybrid system, the high-frequency acquisition on the instantaneous torque and the instantaneous rotation speed is realized, and the distortion rate of the signal is reduced.
The present application is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present application are intended to be included in the scope of the present application.
Claims (7)
1. A range extender transient torque and rotational speed measurement device, comprising: the device comprises a data acquisition module, a conversion module and a communication module; the data acquisition module is connected with the conversion module; the conversion module is also connected with the communication module;
the data acquisition module is used for acquiring torque information and rotation speed information of the range extender in real time;
the conversion module is used for converting the torque information and the rotating speed information of the range extender into a preset format and sending the torque information and the rotating speed information of the preset format to the communication module;
the communication module is used for sending the torque information and the rotation speed information meeting the preset requirements to the upper computer in a preset communication mode;
the data acquisition module comprises a detection module and a sampling module;
the detection module is used for detecting the change conditions of the torque information and the rotation speed information of the range extender;
the sampling module is used for collecting torque signals and rotation speed signals of the range extender according to preset collection frequency;
the conversion module comprises a linear relation verification module and a digital signal conversion module;
the linear relation verification module is used for receiving the torque signal and the rotating speed signal of the range extender and verifying whether the torque signal and the rotating speed signal of the range extender are in a linear relation or not;
the digital signal conversion module is used for converting the torque signal and the rotating speed signal of the range extender in a linear relation into digital signals and sending the digital signals to the detection module.
2. The range extender transient torque and rotational speed measurement device of claim 1, wherein said communication module comprises a communication preparation module and a transmission module;
the communication preparation module is used for checking whether the connection of each module of the extended-range hybrid system is normal;
and the sending module is used for sending the digital signal to an upper computer in a preset format.
3. The range extender transient torque and rotational speed measurement device of claim 2, wherein the communication module is a CAN communication module and the message is a CAN message.
4. The range extender transient torque and speed measurement device of claim 1 further comprising a display module; the display module is used for displaying the torque information and the rotating speed information of the range extender, the state of the communication module and the message sending state, which are acquired by the data acquisition module.
5. A method for measuring instantaneous torque and rotational speed of a range extender based on the device for measuring instantaneous torque and rotational speed of a range extender as claimed in any one of claims 1 to 4, comprising:
the torque information and the rotating speed information of the range extender are acquired in real time through the data acquisition module;
converting the torque information and the rotating speed information of the range extender into a preset format through a conversion module, and sending the torque information and the rotating speed information of the preset format to the communication module;
transmitting a message to an upper computer in a preset communication mode through a communication module according to torque information and rotation speed information meeting preset requirements;
the torque information and the rotation speed information of the range extender are acquired in real time through the data acquisition module, and the range extender comprises:
detecting the change condition of torque information and rotation speed information of the range extender in real time;
acquiring the change conditions of the torque information and the rotation speed information of the range extender at a preset acquisition frequency to obtain a torque signal and a rotation speed signal of the range extender;
the conversion module converts the torque information and the rotation speed information of the range extender into a preset format, and sends the torque information and the rotation speed information in the preset format to the communication module, and the communication module comprises:
receiving a torque signal and a rotating speed signal of the range extender, and verifying whether the torque signal and the rotating speed signal of the range extender are in a linear relation or not;
and converting the torque signal and the rotating speed signal of the range extender in a linear relation into digital signals, and transmitting the digital signals to the detection module.
6. The method for measuring instantaneous torque and rotational speed of a range extender according to claim 5, wherein the converting module converts the torque information and the rotational speed information of the range extender into a preset format, and sends the torque information and the rotational speed information in the preset format to the communication module, and further comprising:
acquiring torque signals and rotating speed signals of the range extender at any moment at least three times;
taking torque signals and rotating speed signals of the range extender at any time twice to establish a linear relation;
and verifying whether the linear relation is accurate or not according to the torque signal and the rotating speed signal of the range extender at any time for the third time.
7. The method for measuring instantaneous torque and rotational speed of a range extender according to claim 5, wherein the step of sending the torque information and the rotational speed information meeting the preset requirements to the upper computer in a preset communication manner through the communication module comprises the steps of:
storing the torque signal and the rotating speed signal of the range extender into a message by using preset data bits to obtain a message containing the torque signal and the rotating speed signal of the range extender;
and sending the message containing the torque signal and the rotating speed signal of the range extender to an upper computer in a preset message format.
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| CN111504652A (en) * | 2020-04-26 | 2020-08-07 | 上海元城汽车技术有限公司 | Bench test method, device, equipment and storage medium of range extender |
| CN111896269A (en) * | 2020-07-28 | 2020-11-06 | 华人运通(江苏)技术有限公司 | Motor rack testing method and system |
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