CN111610739A - Intelligent acquisition system for automobile maintenance data - Google Patents
Intelligent acquisition system for automobile maintenance data Download PDFInfo
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- CN111610739A CN111610739A CN202010475728.5A CN202010475728A CN111610739A CN 111610739 A CN111610739 A CN 111610739A CN 202010475728 A CN202010475728 A CN 202010475728A CN 111610739 A CN111610739 A CN 111610739A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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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
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/008—Registering or indicating the working of vehicles communicating information to a remotely located station
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0841—Registering performance data
- G07C5/085—Registering performance data using electronic data carriers
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention discloses an intelligent acquisition system for automobile maintenance data, which comprises Android equipment and a peripheral data acquisition module, wherein the peripheral data acquisition module is directly connected with the Android equipment by adopting an embedded structure, and exchanges data with the Android equipment in a USB (universal serial bus) mode; the peripheral data acquisition module is used for signal acquisition, signal conditioning and USB conversion; the Android equipment is used for 5V power supply, data display, data processing and data application; according to the invention, through the Internet of things technology, the artificial intelligence technology, the big data and the cloud computing technology, the problems existing in the current automobile maintenance site are solved, stray data is changed into centralized management, manual recording is changed into automatic acquisition, random operation is changed into a standard flow, maintenance recording is changed into an automobile inspection report, experimental deduction is changed into algorithm judgment, and the technology is changed into independent progress, so that the core competitiveness of automobile maintenance enterprises is improved, and the automobile maintenance enterprise is adapted to the continuous change of the automobile repair market.
Description
Technical Field
The invention relates to the field of automobile maintenance, in particular to an intelligent acquisition system for automobile maintenance data.
Background
The automobile maintenance refers to a process of performing brand new maintenance and care on the automobile by adopting special care materials and products with different properties according to maintenance conditions required by different materials of each part of the automobile. Modern vehicle maintenance covers the maintenance areas of the engine, gearbox, chassis, cooling system, fuel system, etc. Automobile maintenance is the trend and key point of the after-market of automobiles, and the maintenance in the seven divisions and the three divisions is accepted by more and more automobile families by the maintenance and repair.
In the prior art, the automobile maintenance industry has the following problems: 1. the detection data is discarded at any time: in the detection process of the automobile maintenance site, most of the obtained data is disposable. Technicians can obtain various types of data through detection instruments and tools, and since no data management platform is used for analysis and storage, the technicians only judge the data according to experience or a vehicle model manual and discard the data, so that a great amount of first-hand data is wasted. 2. The operation mode is original and single: for many years, automobile maintenance work is mostly a process as follows: the method comprises the steps of entering a vehicle factory, determining the price according to the type of a project after the communication between a service consultant and a vehicle owner, manually opening a vehicle receiving order for the information input of a front desk, opening a work order to a maintenance technician according to the station by the front desk according to the vehicle receiving information, detecting the work order by the maintenance technician according to the work order project, giving a maintenance scheme (the original project and the work and material cost of a newly added project) and facilitating the transaction, and operating/trial run/purchase order/delivery. In the whole process, the owner of the vehicle is in a passive role, and due to the asymmetry of the information, particularly the confusion of the information of the newly added item can cause a certain confusion of the owner of the vehicle. 3. Data acquisition is simple and arbitrary: at present, on an automobile maintenance site, the collection of vehicle maintenance data is mostly a simple manual entry mode. Some pick-up orders or dispatch orders are designed carefully (fig. one/fig. 2), but in practical application, most of them flow in forms without recording or randomly recording, which can affect the accuracy and integrity of information recorded by the foreground ERP system. 4. The cost is high and the efficiency is low: at present, the structure of a front-line personnel in most automobile maintenance enterprises is still the traditional master (technician) + gadget (bare brother) mode, and the wages are different by several times. The master workers should do major repair or difficult fault diagnosis and the like, and actually do a large amount of routine vehicle detection work, and if the work has a set of complete flow and standard, the common workers can also be completely competent. On the other hand, the enterprise does not have effective supervision and incentive for routine examination of technicians, and the working process is determined by the states of the technicians, so that the time is different, much time is short, and the time is long. The method is also one of the reasons that the labor cost of most maintenance enterprises is high and the efficiency is low. 5. Standard confusion of operation at will: because the technicians in the vehicle enterprises have certain mobility, the newly added technicians and the original technicians have different operation habits and vehicle inspection standards, so that the current vehicle inspection and maintenance methods of the vehicle enterprises are different. In addition, most vehicle enterprises have no training department, so that the operation specifications and the technical standards cannot be effectively trained and managed, and different technicians generate different vehicle checking results, thereby causing disorder of non-standard operation and non-standard detection. The disorientation gives a very unprofessional feeling to the owner of the automobile and simultaneously restricts the development of the enterprise. 6. The vehicle detection randomness is high: at present, the condition of vehicle detection is mostly 'coped' by technicians, because the technicians need to fill in the checklists after the inspection is finished, the filled checklists are too many in technical terms and can only be described through languages, most vehicle owners cannot understand the content on the checklists, and the vehicle owners cannot timely process the reported fault items as to whether the reported fault items are suspected to have the necessity of maintenance and processing. So that maintenance or labor costs cannot be incurred and the profits of the technicians cannot be directly promoted, resulting in that the technicians lose interest in the vehicle inspection and are free to see and cope with the psychological state of the inspection.
Disclosure of Invention
The invention aims to: the intelligent acquisition system for the automobile maintenance data is provided, and solves the problems existing in the existing automobile maintenance site through the Internet of things technology, the artificial intelligence technology, the big data and the cloud computing technology, changes stray data into centralized management, changes manual recording into automatic acquisition, changes random operation into standard flow, changes maintenance recording into an automobile inspection report, changes empirical inference into algorithm judgment, and changes technology sharing into common progress, thereby helping automobile maintenance enterprises to improve core competitiveness and adapt to continuous change of the automobile maintenance market.
The technical scheme adopted by the invention is as follows:
the intelligent automobile maintenance data acquisition system comprises Android equipment and a peripheral data acquisition module, wherein the peripheral data acquisition module is directly connected with the Android equipment in an embedded structure, and exchanges data with the Android equipment in a USB mode; the peripheral data acquisition module is used for signal acquisition, signal conditioning and USB conversion; the Android equipment is used for 5V power supply, data display, data processing and data application;
the peripheral data acquisition module can automatically acquire, store and upload data to a cloud database and comprises a brake oil detection module, a storage battery detection module, a wind speed and wind temperature detection module, a sonar detection module, a light illumination detection module, a wheel data acquisition module, a USB endoscope module and an OBD module;
the brake oil detection module is used for detecting the water content of the brake fluid of the automobile and transmitting data through USB communication after being embedded into the Android equipment;
the storage battery detection module is used for detecting data such as internal resistance, starting voltage and charging voltage of a storage battery, providing indexes such as battery capacity and health index, sending the data to the Android equipment by one key, and pushing a storage battery health report through an application program; the storage battery detection module and the Android device share the same WIFI, and data are exchanged through a TCP (transmission control protocol);
the wind speed and wind temperature detection module is used for rapidly measuring the wind speed and the temperature of an air outlet of an automobile air conditioner, is embedded into the Android equipment and transmits data through USB communication;
the sonar detection module is used for rapidly measuring the sonar level in the cabin when the engine runs, is embedded into the Android equipment and transmits data through USB communication;
the illuminance detection module is used for detecting the illuminance of far and near lights of the automobile headlamp, is embedded into the Android device, and transmits data through USB communication;
the wheel data acquisition module is used for rapidly measuring the tire pressure value, the tread depth and the brake pad thickness of a vehicle tire, digitally displaying the tire pressure value, the tread depth and the brake pad thickness, sending the tire pressure value, the tread depth and the brake pad thickness to the Android equipment through one key of Zigbee wireless communication, and embedding the Android equipment into a Zigbee regulator module for receiving signals;
the USB endoscope module is used for observing the degree of carbon deposition in a combustion chamber and the blocking condition of an evaporation box and a condenser, photographing and uploading are realized through an application program, the USB endoscope module is directly connected with the USB interface of the Android device, and data are transmitted through a USB _ OTG protocol;
the OBD module is used for reading basic information and running data of the vehicle, enriching vehicle inspection report contents, analyzing the running data of the vehicle in detail through an application program of the Android device, and giving a pre-inspection report conforming to annual inspection of the vehicle; the OBD module is inserted into a vehicle OBD diagnosis interface and exchanges data with the Android device through a Bluetooth mode.
The Android device is an industrial-grade customized device, is the core of the whole system, and has important tasks of power supply of an external USB device, processing of various acquired data, issuing of control instructions of the acquisition device, project detection flow management, data classification and uploading to a cloud, generation and pushing of detection reports and the like.
Furthermore, the signal acquisition of the peripheral data acquisition module is realized by a sensor, a corresponding sensing device is selected according to an acquisition object, and a signal conditioning unit and a USB conversion unit of a module instrument corresponding to a sensor interface and the peripheral data acquisition module are designed on the same circuit board; peripheral data acquisition module's signal conditioning realizes signal conversion by different signal conditioning modules through the inside characteristic according to all kinds of sensor signals of every module instrument, includes:
current signal conditioning, wherein current signals of two sensors, namely 0-20 mA or 4-20 mA, are conditioned into 0-5V voltage signals which are supplied to an input port of a rear-stage A/D converter;
voltage signal conditioning, namely conditioning voltage signals input by various sensors into 0-5V voltage signals to be supplied to an input port of a rear-stage A/D converter;
the resistance signal conditioning is used for conditioning an input resistance signal and an internal reference resistance to form a precise bridge detection circuit, and the output of the bridge detection circuit is supplied to an input port of a rear-stage A/D converter;
the serial data signal is subjected to anti-interference processing on an input serial data signal, such as a single-wire temperature and humidity signal of DS18B20/DHT11 and the like, and then is supplied to a rear-stage USB _ MCU input port;
frequency signal conditioning, namely, carrying out signal shaping, amplitude limiting and other processing on input frequency signals such as rotating speed, wind speed and the like, and then supplying the processed signals to a rear-stage USB _ MCU input port;
and the USB conversion of the peripheral data acquisition module is used for carrying out USB communication with the Android equipment by taking the input signal as data of the USB equipment after operation processing.
Further, the USB conversion unit adopts CH5xx series USB _ MCU.
Furthermore, the peripheral data acquisition module also comprises a pH value detection module, a temperature and humidity detection module, a current detection module, a light transmittance detection module, a coating thickness detection module, an infrared temperature detection module and a torsion detection module;
the pH value detection module is used for rapidly detecting the pH value of the antifreeze solution of the automobile engine, is embedded into the Android equipment and transmits data through USB communication;
the temperature and humidity detection module is used for rapidly measuring the temperature and humidity around the vehicle and in the cab, is embedded into the Android equipment, and transmits data through USB communication;
the current detection module is used for rapidly measuring starting current, charging current, electric appliance working current, storage battery leakage current and the like, and displaying the current, and is embedded into the Android equipment to transmit data through USB communication;
the light transmittance detection module is used for rapidly detecting the light transmittance of engine oil of the engine, is embedded into the Android equipment and transmits data through USB communication;
the coating thickness detection module can measure the thickness of the nonmagnetic coating on the surface of the steel or iron without damaging a measured object, is embedded into the Android equipment and transmits data through USB communication;
the infrared temperature detection module measures the temperature of each part of a vehicle such as an engine cooling system, an exhaust system, a brake disc and a tire in a non-contact manner, is embedded into the Android equipment, and transmits data through USB communication;
the torque detection module realizes wireless networking of torque data by additionally arranging a torque sensor and a wireless sending module on a traditional torque wrench, the torque data is sent to the Android equipment through a Zigbee wireless communication key, and the Android equipment is embedded into a Zigbee regulator module and used for receiving signals.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the intelligent acquisition system for the automobile maintenance data solves the problems existing in the current automobile maintenance site through the Internet of things technology, the artificial intelligence technology, the big data and the cloud computing technology, changes stray data into centralized management, changes manual recording into automatic acquisition, changes random operation into a standard flow, changes maintenance recording into an automobile inspection report, changes the judgment of an algorithm through inspection and changes the exclusive sharing of technology into common progress, helps automobile maintenance enterprises to improve the core competitiveness, and adapts to the continuous change of the automobile maintenance market.
2. The invention collects the picture and audio-video information of the automobile maintenance site by means of photographing, shooting, recording and the like, thereby enriching the content of the maintenance data.
3. When a certain signal is collected, the corresponding module instrument is taken out of the tool box and inserted into the Android equipment, so that the operation is convenient, the instrument is easy to manage, and the purchasing cost of automobile maintenance enterprises can be greatly reduced.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a system block diagram of an intelligent acquisition system for automobile maintenance data;
FIG. 2 is a block diagram of the hardware components of the system of the present invention;
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
The present invention will be described in detail with reference to fig. 1 to 2.
Example 1
As shown in fig. 1 to 2, the intelligent acquisition system for automobile maintenance data includes an Android device and a peripheral data acquisition module, wherein the peripheral data acquisition module is directly connected with the Android device by adopting an embedded structure, and exchanges data with the Android device by using a USB mode; the peripheral data acquisition module is used for signal acquisition, signal conditioning and USB conversion; the Android equipment is used for 5V power supply, data display, data processing and data application;
the peripheral data acquisition module can automatically acquire, store and upload data to a cloud database and comprises a brake oil detection module, a storage battery detection module, a wind speed and wind temperature detection module, a sonar detection module, a light illumination detection module, a wheel data acquisition module, a USB endoscope module and an OBD module;
the brake oil detection module is used for detecting the water content of the brake fluid of the automobile and transmitting data through USB communication after being embedded into the Android equipment;
the storage battery detection module is used for detecting data such as internal resistance, starting voltage and charging voltage of a storage battery, providing indexes such as battery capacity and health index, sending the data to the Android equipment by one key, and pushing a storage battery health report through an application program; the storage battery detection module and the Android device share the same WIFI, and data are exchanged through a TCP (transmission control protocol);
the wind speed and wind temperature detection module is used for rapidly measuring the wind speed and the temperature of an air outlet of an automobile air conditioner, is embedded into the Android equipment and transmits data through USB communication;
the sonar detection module is used for rapidly measuring the sonar level in the cabin when the engine runs, is embedded into the Android equipment and transmits data through USB communication;
the illuminance detection module is used for detecting the illuminance of far and near lights of the automobile headlamp, is embedded into the Android device, and transmits data through USB communication;
the wheel data acquisition module is used for rapidly measuring the tire pressure value, the tread depth and the brake pad thickness of a vehicle tire, digitally displaying the tire pressure value, the tread depth and the brake pad thickness, sending the tire pressure value, the tread depth and the brake pad thickness to the Android equipment through one key of Zigbee wireless communication, and embedding the Android equipment into a Zigbee regulator module for receiving signals;
the USB endoscope module is used for observing the degree of carbon deposition in a combustion chamber and the blocking condition of an evaporation box and a condenser, photographing and uploading are realized through an application program, the USB endoscope module is directly connected with the USB interface of the Android device, and data are transmitted through a USB _ OTG protocol;
the OBD module is used for reading basic information and running data of the vehicle, enriching vehicle inspection report contents, analyzing the running data of the vehicle in detail through an application program of the Android device, and giving a pre-inspection report conforming to annual inspection of the vehicle; the OBD module is inserted into a vehicle OBD diagnosis interface and exchanges data with the Android device through a Bluetooth mode.
According to the invention, the Android equipment is industrial-grade customized equipment, is the core of the whole system, and has important tasks of power supply of external USB equipment, processing of various acquired data, issuing of control instructions of the acquired equipment, project detection flow management, data classification and uploading to a cloud, generation and pushing of detection reports and the like; wherein the detection index of the brake oil detection module is 0.1-4.0%; the detection indexes of the wind speed and wind temperature detection module are that the wind speed is 0.0-30 m/s and the temperature is-10-50 ℃; the detection index of the sonar detection module is 30-130 dB; the detection index of the illuminance detection module is 0.0-50000 lux; the detection indexes of the wheel data acquisition module are 0.0-500 KPa of tire pressure, 0-20 mm of tire grain depth and 3-12 mm of brake pad thickness.
Example 2
As shown in fig. 1 to 2, the present embodiment is different from embodiment 1 in that signal acquisition of the peripheral data acquisition module is implemented by a sensor, a corresponding sensor device is selected according to an acquisition object, and a signal conditioning unit and a USB conversion unit of a module instrument, which are corresponding to a sensor interface and the peripheral data acquisition module, are designed on the same circuit board; peripheral data acquisition module's signal conditioning realizes signal conversion by different signal conditioning modules through the inside characteristic according to all kinds of sensor signals of every module instrument, includes:
current signal conditioning, wherein current signals of two sensors, namely 0-20 mA or 4-20 mA, are conditioned into 0-5V voltage signals which are supplied to an input port of a rear-stage A/D converter;
voltage signal conditioning, namely conditioning voltage signals input by various sensors into 0-5V voltage signals to be supplied to an input port of a rear-stage A/D converter;
the resistance signal conditioning is used for conditioning an input resistance signal and an internal reference resistance to form a precise bridge detection circuit, and the output of the bridge detection circuit is supplied to an input port of a rear-stage A/D converter;
the serial data signal is subjected to anti-interference processing on an input serial data signal, such as a single-wire temperature and humidity signal of DS18B20/DHT11 and the like, and then is supplied to a rear-stage USB _ MCU input port;
frequency signal conditioning, namely, carrying out signal shaping, amplitude limiting and other processing on input frequency signals such as rotating speed, wind speed and the like, and then supplying the processed signals to a rear-stage USB _ MCU input port;
and the USB conversion of the peripheral data acquisition module is used for carrying out USB communication with the Android equipment by taking the input signal as data of the USB equipment after operation processing.
Example 3
As shown in fig. 1 to 2, the peripheral data acquisition module further includes a PH value detection module, a temperature and humidity detection module, a current detection module, a light transmittance detection module, a coating thickness detection module, an infrared temperature detection module, and a torque detection module;
the pH value detection module is used for rapidly detecting the pH value of the antifreeze solution of the automobile engine, is embedded into the Android equipment and transmits data through USB communication;
the temperature and humidity detection module is used for rapidly measuring the temperature and humidity around the vehicle and in the cab, is embedded into the Android equipment, and transmits data through USB communication;
the current detection module is used for rapidly measuring starting current, charging current, electric appliance working current, storage battery leakage current and the like, and displaying the current, and is embedded into the Android equipment to transmit data through USB communication;
the light transmittance detection module is used for rapidly detecting the light transmittance of engine oil of the engine, is embedded into the Android equipment and transmits data through USB communication;
the coating thickness detection module can measure the thickness of the nonmagnetic coating on the surface of the steel or iron without damaging a measured object, is embedded into the Android equipment and transmits data through USB communication;
the infrared temperature detection module measures the temperature of each part of a vehicle such as an engine cooling system, an exhaust system, a brake disc and a tire in a non-contact manner, is embedded into the Android equipment, and transmits data through USB communication;
the torque detection module realizes wireless networking of torque data by additionally arranging a torque sensor and a wireless sending module on a traditional torque wrench, the torque data is sent to the Android equipment through a Zigbee wireless communication key, and the Android equipment is embedded into a Zigbee regulator module and used for receiving signals.
The detection index of the PH value detection module is 4.0-10.0 of the PH value; the detection indexes of the temperature and humidity detection module are temperature of-30 ℃ to 80 ℃ and humidity of 5 percent to 98 percent RH; the detection indexes of the current detection module are 0.0-4.0A, 0.0-40A and 0.0-400A; the detection index of the light transmittance detection module is 0.0-100% mm; the detection index of the coating thickness detection module is 0.0-2.0 mm; the detection index of the infrared temperature detection module is-30-1000 ℃; the detection index of the torsion detection module is 0.0-255 N.m.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be made by those skilled in the art without inventive work within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (4)
1. Intelligent collection system of car maintenance data, its characterized in that: the Android device comprises Android equipment and a peripheral data acquisition module, wherein the peripheral data acquisition module is directly connected with the Android equipment by adopting an embedded structure, and exchanges data with the Android equipment by a USB (universal serial bus) mode; the peripheral data acquisition module is used for signal acquisition, signal conditioning and USB conversion; the Android equipment is used for 5V power supply, data display, data processing and data application;
the peripheral data acquisition module can automatically acquire, store and upload data to a cloud database and comprises a brake oil detection module, a storage battery detection module, a wind speed and wind temperature detection module, a sonar detection module, a light illumination detection module, a wheel data acquisition module, a USB endoscope module and an OBD module;
the brake oil detection module is used for detecting the water content of the brake fluid of the automobile and transmitting data through USB communication after being embedded into the Android equipment;
the storage battery detection module is used for detecting data such as internal resistance, starting voltage and charging voltage of a storage battery, providing indexes such as battery capacity and health index, sending the data to the Android equipment by one key, and pushing a storage battery health report through an application program; the storage battery detection module and the Android device share the same WIFI, and data are exchanged through a TCP (transmission control protocol);
the wind speed and wind temperature detection module is used for rapidly measuring the wind speed and the temperature of an air outlet of an automobile air conditioner, is embedded into the Android equipment and transmits data through USB communication;
the sonar detection module is used for rapidly measuring the sonar level in the cabin when the engine runs, is embedded into the Android equipment and transmits data through USB communication;
the illuminance detection module is used for detecting the illuminance of far and near lights of the automobile headlamp, is embedded into the Android device, and transmits data through USB communication;
the wheel data acquisition module is used for rapidly measuring the tire pressure value, the tread depth and the brake pad thickness of a vehicle tire, digitally displaying the tire pressure value, the tread depth and the brake pad thickness, sending the tire pressure value, the tread depth and the brake pad thickness to the Android equipment through one key of Zigbee wireless communication, and embedding the Android equipment into a Zigbee regulator module for receiving signals;
the USB endoscope module is used for observing the degree of carbon deposition in a combustion chamber and the blocking condition of an evaporation box and a condenser, photographing and uploading are realized through an application program, the USB endoscope module is directly connected with the USB interface of the Android device, and data are transmitted through a USB _ OTG protocol;
the OBD module is used for reading basic information and running data of the vehicle, enriching vehicle inspection report contents, analyzing the running data of the vehicle in detail through an application program of the Android device, and giving a pre-inspection report conforming to annual inspection of the vehicle; the OBD module is inserted into a vehicle OBD diagnosis interface and exchanges data with the Android device through a Bluetooth mode.
2. The intelligent automobile maintenance data acquisition system of claim 1, wherein: the signal acquisition of the peripheral data acquisition module is realized by a sensor, a corresponding sensing device is selected according to an acquisition object, and a signal conditioning unit and a USB conversion unit of a module instrument corresponding to a sensor interface and the peripheral data acquisition module are designed on the same circuit board; peripheral data acquisition module's signal conditioning realizes signal conversion by different signal conditioning modules through the inside characteristic according to all kinds of sensor signals of every module instrument, includes:
current signal conditioning, wherein current signals of two sensors, namely 0-20 mA or 4-20 mA, are conditioned into 0-5V voltage signals which are supplied to an input port of a rear-stage A/D converter;
voltage signal conditioning, namely conditioning voltage signals input by various sensors into 0-5V voltage signals to be supplied to an input port of a rear-stage A/D converter;
the resistance signal conditioning is used for conditioning an input resistance signal and an internal reference resistance to form a precise bridge detection circuit, and the output of the bridge detection circuit is supplied to an input port of a rear-stage A/D converter;
the serial data signal is subjected to anti-interference processing on an input serial data signal, such as a single-wire temperature and humidity signal of DS18B20/DHT11 and the like, and then is supplied to a rear-stage USB _ MCU input port;
frequency signal conditioning, namely, carrying out signal shaping, amplitude limiting and other processing on input frequency signals such as rotating speed, wind speed and the like, and then supplying the processed signals to a rear-stage USB _ MCU input port;
and the USB conversion of the peripheral data acquisition module is used for carrying out USB communication with the Android equipment by taking the input signal as data of the USB equipment after operation processing.
3. The intelligent automobile maintenance data acquisition system of claim 2, wherein: the USB conversion unit adopts CH5xx series USB _ MCU.
4. The intelligent automobile maintenance data acquisition system of claim 1, wherein: the peripheral data acquisition module also comprises a PH value detection module, a temperature and humidity detection module, a current detection module, a light transmittance detection module, a coating thickness detection module, an infrared temperature detection module and a torsion detection module;
the pH value detection module is used for rapidly detecting the pH value of the antifreeze solution of the automobile engine, is embedded into the Android equipment and transmits data through USB communication;
the temperature and humidity detection module is used for rapidly measuring the temperature and humidity around the vehicle and in the cab, is embedded into the Android equipment, and transmits data through USB communication;
the current detection module is used for rapidly measuring starting current, charging current, electric appliance working current, storage battery leakage current and the like, and displaying the current, and is embedded into the Android equipment to transmit data through USB communication;
the light transmittance detection module is used for rapidly detecting the light transmittance of engine oil of the engine, is embedded into the Android equipment and transmits data through USB communication;
the coating thickness detection module can measure the thickness of the nonmagnetic coating on the surface of the steel or iron without damaging a measured object, is embedded into the Android equipment and transmits data through USB communication;
the infrared temperature detection module measures the temperature of each part of a vehicle such as an engine cooling system, an exhaust system, a brake disc and a tire in a non-contact manner, is embedded into the Android equipment, and transmits data through USB communication;
the torque detection module realizes wireless networking of torque data by additionally arranging a torque sensor and a wireless sending module on a traditional torque wrench, the torque data is sent to the Android equipment through a Zigbee wireless communication key, and the Android equipment is embedded into a Zigbee regulator module and used for receiving signals.
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