Engine operation information acquisition equipment and system

Abstract

The utility model discloses an engine operation information acquisition device and system, and relates to the field of engines, and the device comprises an integrally formed lower housing which is internally provided with a power supply module, a main control module, a data acquisition module connected with the main control module, a data storage module, an NFC wireless data transmission module and a network transmission module, the signal conditioning module is connected with the data acquisition module; the operation panel is sealed and covered on the lower shell through a sealing ring and is provided with a power interface, a signal interface, an NFC (Near Field Communication) port and a network port; wherein the power module is connected with an external power supply through the power interface to supply power to equipment; the signal conditioning module accesses multiple paths of signals related to engine operation through a signal interface; and the data acquisition module performs multi-channel synchronous acquisition on the conditioned multi-channel signals to obtain multi-channel synchronous data, and the data is stored in the data storage module on one hand and transmitted to the upper computer on the other hand so as to be used for accurately monitoring the running state of the engine.

Description

Technical Field

[0001] The utility model relates to the field of engines, in particular to an engine operation information collection device and system. Background Art

[0002] The engine is a power unit, and the engine operating status directly affects the operating status of the equipment, so it is necessary to monitor the engine operating status of the equipment. However, the engine testability design of some equipment (such as armored vehicles) is poor, and it is impossible to obtain information related to the engine operation from these equipment, so it is impossible to monitor the engine operating status. Utility Model Content

[0003] The utility model provides an engine operation information collection device and apparatus to solve the above technical problems.

[0004] The utility model provides an engine operation information collection device, comprising: an integrated lower shell, inside which is installed a power module, a main control module, a data collection module connected to the main control module, a data storage module, an NFC wireless data transmission module, a network transmission module, and a signal conditioning module connected to the data collection module; an operation panel sealed on the lower shell by a sealing ring, which has a power interface, a signal interface, an NFC port, and a network port; wherein the power module is connected to an external power source through the power interface to power the device; the signal conditioning module is connected to the engine-related The electronic control unit, instrument and sensor equipment are used to access the multi-channel signals related to the operation of the engine; the data acquisition module performs multi-channel synchronous acquisition on the multi-channel signals conditioned and output by the signal conditioning module to obtain the multi-channel synchronous data related to the operation of the engine; the data storage module saves the multi-channel synchronous data; the NFC wireless data transmission module wirelessly transmits the multi-channel synchronous data to an external NFC card through the NFC port, so as to transmit the multi-channel synchronous data to an external host computer using the external NFC card; the network transmission module transmits the multi-channel synchronous data to an external host computer through the network port.

[0005] Preferably, the signal conditioning module includes a multi-channel dynamic signal conditioning circuit for accessing and conditioning multiple dynamic signals in the multiple channels of signals related to the engine operation and a multi-channel steady-state signal conditioning circuit for accessing and conditioning multiple steady-state signals in the multiple channels of signals related to the engine operation.

[0006] The signal interface includes a multi-signal interface and an exhaust gas sensor interface.

[0007] Preferably, the sensing device includes: a plurality of vibration sensors installed at different positions of the power device and connected to the multi-signal interface; the multi-channel dynamic signal is a multi-channel vibration signal collected by the plurality of vibration sensors; accordingly, each dynamic signal conditioning circuit includes an excitation source connected in sequence, a low-pass filter for filtering out frequency components in the vibration signal that are higher than 1 / 2 of the sampling frequency to prevent aliasing, and an operational amplifier for amplifying the vibration signal.

[0008] Preferably, the sensing device also includes: an oil level sensor and an oil quality sensor installed on the main oil channel of the engine and connected to the multi-signal interface, and an oxygen sensor and / or a nitrogen oxide sensor installed in the exhaust pipe and connected to the exhaust gas sensor interface; the multi-channel steady-state signals include: the oil level signal and the oil quality signal respectively collected by the oil level sensor and the oil quality sensor, the exhaust gas quality O2 signal collected by the oxygen sensor and / or the exhaust gas quality NOx signal collected by the nitrogen oxide sensor, signals including engine speed, oil temperature, oil pressure, hydraulic oil pressure, cooling water temperature, and exhaust temperature obtained from an electronic control unit related to the engine; signals including driving speed, mileage, engine motorcycle hours, and intake resistance obtained from instruments related to the engine; accordingly, each steady-state signal conditioning circuit includes an amplification circuit and a filtering circuit for amplifying and filtering one steady-state signal in turn.

[0009] Preferably, the data acquisition module includes a multi-channel synchronous acquisition AD chip with a sampling resolution of 18 bits.

[0010] Preferably, a lithium battery pack composed of lithium battery cells; a power management circuit, which is connected to an external power source through the power interface, and is used to use the external power source to charge the lithium battery pack and power other modules of the device, and the external power source includes a ground power source and a vehicle power source.

[0011] Preferably, the operation panel also has a display screen for displaying the battery power of the lithium battery pack and a button switch for controlling whether the device is powered.

[0012] The utility model provides an engine operation information collection system, comprising: an NFC card and a host computer; an electronic control unit, an instrument and a sensor device related to the engine; and one or more of the above engine operation information collection devices.

[0013] The utility model provides an engine operation information acquisition device that can obtain more comprehensive information related to engine operation from the equipment, so that the host computer can accurately monitor the engine operation status based on this information, and is particularly suitable for equipment with poor engine testability design (such as armored vehicles). BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the engine operation information collection device provided by the utility model;

[0015] Figure 2 It is a left view of the engine operation information collection device provided by the utility model;

[0016] Figure 3 It is a structural schematic diagram of the engine operation information collection device provided by the utility model;

[0017] Figure 4 It is a schematic diagram of the structure and signal flow of the signal conditioning module provided by the utility model;

[0018] Figure 5 It is a structural schematic diagram of a dynamic signal conditioning circuit provided by the utility model;

[0019] Among them, 1-lower shell; 2-operation panel; 11, status indicator light; 31-power on button; 32-power off button; 33-battery power display screen; 34-power indicator light; 41-power interface; 42-multi-signal interface; 43-exhaust sensor interface; 51-NFC port; 52-network port. DETAILED DESCRIPTION

[0020] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In the subsequent description, the use of suffixes such as "module", "component" or "unit" used to represent elements is only to facilitate the description of the present invention and has no specific meaning in itself. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0021] Aiming at the problem that the engine has a poor testability design and is difficult to collect operating information, thus being unable to monitor the engine operating status, the utility model designs an engine operating information collection device and system, which realizes the collection and storage of information related to the engine operation, including driving speed, driving mileage, engine motorcycle hours, engine speed, oil temperature, oil pressure, hydraulic oil pressure, cooling water temperature, intake resistance, exhaust temperature, exhaust gas quality (NOx concentration), oil level, oil quality, vibration, etc., and transmits this information to a host computer such as a mobile terminal installed with analysis software by using two data transmission methods, namely a network interface and an NFC card reader, so that the host computer can monitor the engine operating status, for example, display each data channel, convert each data channel into an engineering value, etc.

[0022] See also Figure 1 and Figure 2The engine operation information acquisition device of the utility model comprises an integrally formed lower shell 1 and an operation panel 2 covering the lower shell 1 .

[0023] The front, back, left, right and bottom surfaces of the lower housing 1 are made of a whole piece of aluminum ingot (high-strength aluminum alloy) through precision machining. The lower housing 1 is formed in an integrated manner and the operation panel 2 is sealed and covered on the lower housing 1 through a sealing ring to realize the overall device. In addition, the side of the lower housing 1 can be equipped with a mounting flange to assemble the overall device on equipment such as armored vehicles.

[0024] The device of the utility model adopts the structure of upper and lower shells, the lower shell 1 is an integrated sealing structure, the upper shell (i.e., the operation panel 2) is the upper cover of the device, and a sealing groove can be designed between the upper and lower shells. By installing a sealing ring (such as a fluororubber sealing ring), the sealing between the shell joints is ensured to achieve a waterproof effect.

[0025] The operation panel may include the following parts:

[0026] 1. Power interface (i.e., power input port) 41: serves as an external power supply interface and a charging interface;

[0027] 2. Multi-signal interface 42: including interfaces for accessing low-frequency signals such as driving speed, oil temperature, oil pressure, cooling water temperature, intake resistance, hydraulic oil pressure, motorcycle hours, mileage, oil level, oil quality, etc., interfaces for accessing high-frequency signals such as engine speed, battery voltage, battery current, vibration, etc., as well as RS232 interfaces for signal input and CAN bus communication interfaces for data transmission;

[0028] 3. Exhaust gas sensor interface 43: serves as an interface for power supply of the exhaust gas sensor and a CAN communication interface;

[0029] 4. NFC port 51: used to transmit data to an NFC card outside the device by wireless means;

[0030] 5. Network port (i.e., network interface) 52: It is connected to a host computer outside the device to transmit instructions and data;

[0031] The connector of the utility model adopts military-grade aviation connector JY27, for example, the power interface 41 adopts JY27496E9F98PN, the multi-signal interface 42 adopts JY27496E19F45SN, the exhaust gas sensor interface 43 adopts JY27496E13F04SN, and the network port 52 adopts JY27496E13F08SN. This type of connector adopts an internal bayonet locking method to prevent falling off. In addition, the operating temperature range is large, from -20 to 200°C, and can be used in various high and low temperature environments.

[0032] In addition, the operation panel also has the following parts:

[0033] 6. Power on button 31: used to control the power supply of the engine operation information collection device;

[0034] 7. Power off button 32: used to control the power off of the engine operation information collection device;

[0035] That is, the power on button 31 and the power off button 32 control whether the device is powered or not. As an alternative, a power switch can also be used to control whether the device is powered or not.

[0036] 8. Battery power display screen 33: used to display the battery power of the built-in battery of the engine operation information collection device, the built-in battery is a lithium battery pack, and the battery power of the lithium battery pack is displayed;

[0037] 9. Power indicator light 34: used to indicate whether the engine operation information collection device is currently powered on;

[0038] 10. Status indicator light 11: used to indicate the current working status of the engine operation information collection device.

[0039] The panel components such as connectors, indicator lights, etc. on the operation panel of the utility model can use components with IP68 protection standard to ensure that the equipment can work reliably in a highly polluted environment.

[0040] See also Figure 3 The following modules can be installed inside the integrated lower housing 1:

[0041] 1. A power module, which is connected to an external power source through the power interface 41 to power the device, and supports 220V AC power supply and 18-36V DC power supply.

[0042] The power module may include a lithium battery pack composed of lithium battery cells (e.g., imported 18650 lithium battery cells) and a power management circuit connected to an external power source through a power interface 41. The power management circuit supports 220V AC power supply and 18-36V DC power supply, and can use an external power supply to charge the lithium battery pack and power other modules of the device, that is, it supports charging while working. The external power supply includes a ground power supply (i.e., 220V AC power supply) and a vehicle power supply (i.e., 18-36V DC power supply). Specifically, it conditions and transforms the input primary power supply (i.e., external power supply) to generate a secondary power supply for use by the subsequent circuit, and at the same time completes the charge and discharge management of the internal lithium battery pack.

[0043] 2. A signal conditioning module, which is connected to the electronic control unit, instrument and sensor equipment related to the engine through a signal interface to access multiple signals related to the operation of the engine.

[0044] The signal interface includes a multi-signal interface 42 and an exhaust gas sensor interface 43 .

[0045] See also Figure 4 The signal conditioning module includes a multi-channel dynamic signal conditioning circuit (1, 2, ..., m) for accessing and conditioning a multi-channel dynamic signal in a multi-channel signal related to the operation of the engine, where m is the number of dynamic signals / dynamic signal conditioning circuits.

[0046] The frequency components contained in dynamic signals are theoretically infinite, but the device only cares about signals within a certain frequency range. If the signal is not low-pass anti-aliasing filtered, high-order frequencies are likely to be mixed into the low-frequency band, forming false frequency information, which brings difficulties to the subsequent analysis and processing. Therefore, the multi-channel dynamic signal conditioning circuit of the utility model adopts a low-pass filter. Specifically, see Figure 5 Each dynamic signal conditioning circuit includes an IEPE excitation source connected in sequence, a low-pass filter for filtering out frequency components higher than 1 / 2 sampling frequency in the vibration signal to prevent aliasing, and an operational amplifier for amplifying the vibration signal. The excitation source is an IEPE excitation source, and the IEPE excitation source can adopt PSSI2021SAY.

[0047] A dynamic signal refers to a signal whose time domain characteristics and frequency domain characteristics change over a wide range over time. Its amplitude, frequency and phase all change greatly over time. The most important factor to be considered in the acquisition and processing of dynamic signals is that the equipment can accurately reflect the details and peak characteristics of the signal. The vibration signal reflects not only the change in the amplitude of the signal over time, but also the change in its frequency, phase and other parameters over time. Therefore, the multi-channel dynamic signal in the utility model includes a multi-channel vibration signal collected by multiple vibration sensors in the sensing device. Multiple vibration sensors are installed at different positions of the power device and connected to the multi-signal interface.

[0048] See also Figure 4 The signal conditioning module also includes a multi-channel steady-state signal conditioning circuit (1, 2, ..., n) for accessing and conditioning multiple steady-state signals in the multiple signals related to the operation of the engine, where n is the number of steady-state signals / steady-state signal conditioning circuits, and each steady-state signal conditioning circuit includes an amplifier circuit and a filter circuit for sequentially amplifying and filtering one steady-state signal.

[0049] Steady-state signals refer to signals that do not change over time or change slowly over time. Steady-state signals are generally constant values, but signals that change very slowly over time are also classified as steady-state signals. The multi-channel steady-state signals in the utility model include: the oil level signal and the oil quality signal respectively collected by the oil level sensor and the oil quality sensor in the sensing device, the exhaust gas quality O2 signal collected by the oxygen sensor in the sensing device and / or the exhaust gas quality NOx signal collected by the nitrogen oxide sensor in the sensing device, and the signals including engine speed, oil temperature, oil pressure, hydraulic oil pressure, cooling water temperature, and exhaust temperature obtained from the electronic control unit related to the engine, and the signals including driving speed, mileage, engine motorcycle hours, and intake resistance obtained from the instrument related to the engine. Among them, the oil level sensor and the oil quality sensor are installed on the main oil channel of the engine and connected to the multi-signal interface, and the oxygen sensor and / or the nitrogen oxide sensor are installed in the exhaust pipe and connected to the exhaust gas sensor interface.

[0050] 3. A data acquisition module, which is connected to the signal conditioning module, performs multi-channel synchronous acquisition on the multi-channel signals conditioned and output by the signal conditioning module to obtain multi-channel synchronous data related to the operation of the engine.

[0051] An important indicator of dynamic signal acquisition and processing is the dynamic range, which refers to the ratio of the maximum signal to the minimum signal that the device can measure in one measurement. Whether the dynamic range of the device is appropriate or not is crucial to whether the vibration signal can be truly tested. If the dynamic range is too small, large amplitudes will be clipped during measurement and recording, or small harmonic components in the vibration signal will be indistinguishable. The key factor affecting the dynamic range indicator of the test equipment is the sampling resolution. By testing chips with different adopted resolutions, the utility model adopts a high-performance, SAR-type, multi-channel synchronous acquisition AD chip with a sampling resolution of 18 bits to complete the signal acquisition work, so that small signal details are not lost during the test, and large signals can be guaranteed not to overflow.

[0052] 4. A data storage module stores the multi-channel synchronous data and can use vibration-resistant electronic storage media, high-performance, high-reliability 128G electronic storage media.

[0053] 5. An NFC wireless data transmission module, which wirelessly transmits the multi-channel synchronous data to an external NFC card through the NFC port 51, so as to transmit the multi-channel synchronous data to an external host computer using the external NFC card.

[0054] The device integrates an NFC wireless data transmission module, which is located at the NFC window 51 and is effective within a range of 0-10 cm from the module.

[0055] Furthermore, an NFC writer may be built into the device.

[0056] 6. A network transmission module, which transmits the multi-channel synchronous data to an external host computer through the network port 52.

[0057] 7. The main control module is connected to the data acquisition module, the data storage module, the NFC wireless data transmission module, the network transmission module, and the signal conditioning module connected to the data acquisition module to complete the device logic management and realize the parallel acquisition, storage, and transmission of multi-channel data.

[0058] The main control module can use FPGA chips, preferably Xilinx's Spartan6 series chips, which have the advantages of low risk, low cost and low power consumption. The equipment hardware is based on Xilinx's Spartan6 series chips, which have the advantages of high execution efficiency, good stability, fast startup speed and good real-time responsiveness.

[0059] The battery pack, power management circuit and other modules mentioned above are protected by epoxy resin encapsulation. After epoxy resin encapsulation, all modules are protected in all directions, which not only plays the role of three-proof protection, but also strengthens the vibration and impact resistance of each module. In addition, after welding and debugging, the circuit board can be coated with hard epoxy glue. Coating hard epoxy glue not only plays the role of three-proof on the circuit board surface, but also protects the pins of components on the circuit board, ensuring that the pins of components will not loosen or deform under vibration and impact environment.

[0060] Taking the synchronous acquisition of 24-channel signals of general equipment as an example, the use process of the engine operation information acquisition device of the utility model is as follows:

[0061] Step 1: Device boot.

[0062] Step 2: The signal conditioning module collects 24-channel signals through the signal interface.

[0063] The signal acquisition method is as follows:

[0064] 1) Signals collected from vehicle instruments: vehicle speed, mileage, engine hours, speed, and intake resistance.

[0065] 2) Signals collected from the engine electronic control unit (ECU): speed, oil temperature, oil pressure, cooling water temperature, exhaust temperature, and hydraulic oil pressure.

[0066] 3) Signals collected by the installed sensors: battery voltage and current (obtained by adding voltage sensors and current sensors at the battery terminals), exhaust quality (NOx concentration), oil level, oil quality, and 8-way vibration.

[0067] Among them, the 8-channel dynamic signal conditioning circuit in the signal conditioning module is connected to the 8-channel vibration signal and conditions the 8-channel vibration signal, and the 16-channel steady-state signal conditioning circuit in the signal conditioning module is connected to the 16-channel steady-state signal and conditions the 16-channel steady-state signal.

[0068] Step 3: The data acquisition module synchronously acquires the conditioned 24-channel signals.

[0069] Step 4: The data storage module saves the multi-channel synchronous data output by the data acquisition module.

[0070] Step 5: The NFC wireless data transmission module wirelessly transmits the multi-channel synchronous data output by the data acquisition module to an external NFC card through the NFC port, so as to utilize the external NFC card to transmit the multi-channel synchronous data to an external host computer; and / or, the network transmission module transmits the multi-channel synchronous data to an external host computer through the network port.

[0071] The device of the utility model can not only automatically acquire the signals displayed by the vehicle instrument in real time, but also automatically acquire the signals collected by the electronic control unit. It can also automatically acquire the signals collected by each sensor in real time by adding sensors, so that the signal acquisition is more comprehensive. In addition, each of the 24 channels uses an independent AD channel to ensure multi-channel simultaneous acquisition. The acquisition process will not produce phase errors, and synchronous acquisition between channels in the device is realized. The multi-channel synchronous data outputted by it can enable the host computer to accurately monitor the engine operating status, which is especially suitable for equipment with poor engine testability design (such as armored vehicles).

[0072] The present invention also provides an engine operation information collection system, see Figure 3 The system includes: an NFC card, a host computer, an electronic control unit, an instrument and a sensor device related to the engine, and one or more of the above-mentioned engine operation information collection devices.

[0073] The host computer can be a mobile phone, a laptop computer, or a tablet computer. The host computer can display the working status of the engine operation information collection device, including the storage status and storage capacity of the data storage module and the data collection status and real-time waveform of each channel. In addition, analysis software can be installed in the host computer. The software uses a web service method to read the data collected by the engine operation information collection device through a browser, intuitively display the real-time signals of each channel, and store data. It can also start and stop the engine operation information collection device, and can also conduct in-depth analysis and statistical processing of the data after the data collection is completed.

[0074] Among them, the instrumentation related to the engine collects signals including vehicle speed, mileage, engine motorcycle hours, speed, and intake resistance;

[0075] Among them, the engine electronic control unit (ECU) related to the engine collects signals including speed, oil temperature, oil pressure, cooling water temperature, exhaust temperature, and hydraulic oil pressure;

[0076] Among them, the engine-related sensing equipment includes: a voltage Hall sensor and a current Hall sensor installed at the battery terminals to collect the battery voltage and battery current; an oil level sensor and an oil quality sensor installed on the main oil channel of the engine to collect the oil level signal and the oil quality signal; an oxygen sensor and / or a nitrogen oxide sensor installed in the exhaust pipe to collect the exhaust gas quality O2 signal and / or the exhaust gas quality NOx signal; 8 vibration sensors are installed at different positions of the power unit to collect 8 vibration signals.

[0077] The engine operation information collection system provided by the utility model can complete the high-precision synchronous collection, storage and analysis of data such as driving speed, oil temperature, oil pressure, cooling water temperature, intake resistance, hydraulic oil pressure, motorcycle hours, mileage, oil level, exhaust gas quality (NOx concentration), oil quality, engine speed, battery voltage, current, vibration, etc., and can monitor the operating status of the engine more accurately.

[0078] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the present invention is not limited by this. Any modification, equivalent substitution and improvement made by a person skilled in the art without departing from the scope and essence of the present invention shall be within the scope of the present invention.

Claims

1. Engine operation information collection equipment, characterized in that: The device comprises: The integrated lower housing has a power module, a main control module, a data acquisition module connected to the main control module, a data storage module, an NFC wireless data transmission module, a network transmission module, and a signal conditioning module connected to the data acquisition module installed therein; An operation panel sealed on the lower housing by a sealing ring, which has a power interface, a signal interface, an NFC interface, and a network interface; Among them, the power supply module is connected to an external power supply through the power supply interface to power the device; the signal conditioning module is connected to the electronic control unit, instrument and sensor equipment related to the engine through the signal interface to access multiple signals related to the operation of the engine; the data acquisition module performs multi-channel synchronous acquisition on the multiple signals conditioned and output by the signal conditioning module to obtain multi-channel synchronous data related to the operation of the engine; the data storage module saves the multi-channel synchronous data; the NFC wireless data transmission module wirelessly transmits the multi-channel synchronous data to an external NFC card through the NFC port, so as to use the external NFC card to transmit the multi-channel synchronous data to an external host computer; the network transmission module transmits the multi-channel synchronous data to an external host computer through the network port.

2. The device according to claim 1, characterized in that The signal conditioning module includes a multi-channel dynamic signal conditioning circuit for accessing and conditioning multiple dynamic signals in the multiple channels of signals related to the operation of the engine and a multi-channel steady-state signal conditioning circuit for accessing and conditioning multiple steady-state signals in the multiple channels of signals related to the operation of the engine.

3. The device according to claim 2, characterized in that The signal interface includes a multi-signal interface and an exhaust gas sensor interface.

4. The device according to claim 3, characterized in that The sensing device comprises: a plurality of vibration sensors installed at different positions of the power device, connected to the multi-signal interface; the multi-channel dynamic signal is a multi-channel vibration signal collected by the plurality of vibration sensors; Correspondingly, each dynamic signal conditioning circuit includes an excitation source connected in sequence, a low-pass filter for filtering out frequency components higher than 1 / 2 sampling frequency in the vibration signal to prevent aliasing, and an operational amplifier for amplifying the vibration signal.

5. The device according to claim 4, characterized in that The sensing device further comprises: an oil level sensor and an oil quality sensor installed on the main oil passage of the engine and connected to the multi-signal interface, and an oxygen sensor and / or a nitrogen oxide sensor installed in the exhaust pipe of the engine and connected to the exhaust gas sensor interface; The multi-channel steady-state signal includes: the oil level signal and the oil quality signal respectively collected by the oil level sensor and the oil quality sensor, the exhaust gas quality O2 signal collected by the oxygen sensor and / or the exhaust gas quality NOx signal collected by the nitrogen oxide sensor, the signals including engine speed, oil temperature, oil pressure, hydraulic oil pressure, cooling water temperature, and exhaust temperature obtained from the electronic control unit related to the engine; the signals including driving speed, mileage, engine motorcycle hours, and intake resistance obtained from the instrument related to the engine; Correspondingly, each steady-state signal conditioning circuit includes an amplifier circuit and a filter circuit for sequentially amplifying and filtering one steady-state signal.

6. The device according to claim 1, characterized in that The data acquisition module includes a multi-channel synchronous acquisition AD chip with a sampling resolution of 18 bits.

7. The device according to claim 1, characterized in that The power module comprises: A lithium battery pack consisting of lithium battery cells; The power management circuit is connected to an external power source through the power interface, and is used to utilize the external power source to charge the lithium battery pack and to power other modules of the device, wherein the external power source includes a ground power source and a vehicle power source.

8. The device according to claim 7, characterized in that The operation panel also has a display screen for displaying the battery power of the lithium battery pack and a button switch for controlling whether the device is powered.

9. The engine operation information collection system is characterized by: The system comprises: an NFC card and a host computer; an electronic control unit, an instrument and a sensor device related to the engine; and one or more engine operation information collection devices as described in any one of claims 1 to 8.

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