KR101289674B1 - Integrated data measuring apparatus for vehicle - Google Patents

Abstract

PURPOSE: An integrated data measuring device for a vehicle is provided to include an analog/digital input-output interface board and an integrated data acquisition (DAQ) system in which direct and simultaneous connection of various vehicle testing sensors are possible, thereby reducing costs for equipment when testing a vehicle and improving investment efficiency. CONSTITUTION: An integrated data measuring device for a vehicle includes a connector, a signal conditioner (62), and an integrated data collection module. The connector is connected to a vehicle testing sensor. The signal connector amplifies signals received from the vehicle testing sensor and removes the noise of the signals. The integrated data collection module is formed into a form in which a voltage measurement data collection module (68), a temperature measurement data collection module (69), and a micro voltage measurement data collection module (70) are integrated for collecting various kinds of measurement data input by the vehicle testing sensor. [Reference numerals] (AA) Measurement data; (BB) Measurement setting process control; (CC) Various sensor; (DD) DB (Measurement data and measurement profile library); (EE) Measurement data management function; (FF) DAQ set value defining function; (GG) Data reporting; (H1) User interface (Windows-Based GUI); (H2) Test code selection/sensor diagnosis/DAQ process control/real time display; (II) Correction logic (S/W filter for noise removal); (JJ) Various data conversion logic (Distance→Speed integration); (KK) S/W modularization per each testing item; (LL) Control PC (Note book type); (MM) Control PC (equipment equipped type)

Description

Integrated data measuring apparatus for vehicle

The present invention relates to an integrated data measuring device for a vehicle, and more particularly, to an integrated data measuring device for a vehicle that can be used by integrating several different measuring devices in a vehicle performance test.

In general, vehicle tests can be broadly classified into three test areas: braking, power performance, and steering (steering and safety) performance, as shown in Table 1.

As the test items, the braking test is divided into the main brake test, the power performance test into the constant fuel economy test, the engine cooling test, the gear shift effort test, and the roughing performance test is the objective test and the steering wheel restoration performance test. And power steering oil temperature test.

1 is a schematic view showing a data collection and measurement device during the current braking test, the data acquisition and measurement device for the vehicle braking test is a pressure sensor (1), speed sensor (3), temperature for detecting pressure, speed and temperature, etc. Sensors 4, such as the sensor 2, a data acquisition device 8 (DAQ; Data Acquisition) device which collects signals from the sensors 4 and transmits them to a computer, and monitors the signals transmitted using the computer. The apparatus 12 is comprised.

At this time, the data collection device 8 and the monitoring device 12 is the pressure data collection device 5 and the first monitoring device 9, the temperature data collection device 6 and the second monitoring device 10, speed for each sensor It consists of the data collection apparatus 7 and the 3rd monitoring apparatus 11. As shown in FIG.

The pressure, speed, and temperature of the vehicle, the measurement target items necessary for the braking test of the vehicle, are sensed by the pressure sensor (1), the speed sensor (3), and the temperature sensor (2) mounted on the vehicle, and each pressure sensor (1 Data is collected using a dedicated data acquisition device (DAQ; 8) connected to each of the speed sensor (3) and the temperature sensor (2), and the data is converted into a digital signal that can be recognized by the computer and transmitted to the computer. As a result, the pressure, speed, and temperature may be measured through the monitoring device 12, and thus the braking distance and the braking state may be measured.

However, the conventional data collection device is separately connected to the pressure sensor 1, the speed sensor 3 and the temperature sensor 2 for sensing pressure, speed and temperature, and the monitoring device 12 is also separately connected Connected separately from the collecting device 8 has the following problems.

This is because each sensor has a different manufacturer, and each sensor manufacturer has a dedicated data collection device (5, 6, 7) optimized for each sensor, so it is necessary to have different expensive measuring equipment to perform one braking test. Therefore, the equipment purchase cost is increased, there is a problem that the equipment investment efficiency is lowered.

In addition, since the usage is different for each data collection device (5, 6, 7) and monitoring devices (9, 10, 11), the use of the method must be learned separately, which leads to waste of manpower and inconvenience of installing and dismantling each device separately. Due to the long installation and dismantling time is a problem.

The present invention has been invented to solve the above problems, by measuring the main physical quantity for testing a variety of vehicles using a single data collection device, there is no need to use a separate data collection device for each sensor, equipment purchase cost The purpose of the present invention is to provide an integrated data measuring device for a vehicle, which can reduce the manpower because it can be reduced, and only the usage of a single device needs to be learned.

In order to achieve the above object, the integrated data measuring apparatus for a vehicle according to the present invention includes a connector connected to a vehicle test sensor; A signal conditioner for amplifying a signal received from the vehicle test sensor and removing noise of the signal; And a voltage measurement data acquisition module, a temperature measurement data acquisition module, and a microvoltage measurement data acquisition module for collecting various measurement data input from the vehicle test sensor. It is characterized by the fact that.

The connector includes an acceleration sensor interface, a speed sensor interface, an RPM sensor interface, a fuel economy interface, a temperature sensor interface, a pressure sensor interface, a stepping sensor interface, a displacement sensor interface, an acceleration sensor interface, an angle / torque / angular velocity sensor interface, Various vehicle test sensors can be connected directly and simultaneously.

The integrated data collection module includes an A / D converter for converting analog signals received from various vehicle sensors into digital signals; A D / A converter converting a digital signal into an analog signal for controlling power and gain of the sensor; A digital signal input / output unit (Input / Output) for inputting / outputting a digital signal; An amplifier for amplifying the analog signal; And a noise filter for removing noise.

An advantage of the integrated data measuring device for a vehicle according to the present invention is as follows.

First, by equipping analog / digital input / output interface board and integrated DAQ system that can directly / simultaneously connect various vehicle test sensors, localization of equipment can reduce equipment introduction cost and increase investment efficiency. have.

Second, it is possible to improve the efficiency of equipment operation due to the integration / portability of the measurement equipment, and it is possible to reduce the time and labor costs for learning how to use the equipment because you do not have to learn how to use the existing measurement equipment.

Third, it is possible to secure the reliability of the vehicle test and improve the convenience of measurement due to the lightweight and integrated equipment.

Fourth, the vehicle control item-specific instrument control parameters can be set automatically via a GUI for the design and user interface of the flexible, integrated DAQ software architecture.

1 is a schematic diagram showing an apparatus for collecting and measuring data during a current braking test
2 is a block diagram showing an integrated data measuring device for a vehicle according to the present invention
3 is a block diagram of an integrated data acquisition (DAQ) device according to the present invention
4 is a hardware diagram of an integrated data acquisition (DAQ) device according to the present invention;
5 is an external view of the integrated data measuring device of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings in order that those skilled in the art can easily carry out the present invention.

2 is a block diagram showing an integrated data measuring device for a vehicle according to the present invention, FIG. 3 is a block diagram of an integrated data acquisition (DAQ) device according to the present invention, and FIG. DAQ) hardware configuration diagram, Figure 5 is an appearance of the integrated data measurement device in FIG.

The present invention relates to a vehicle integrated data measuring device 50 that can measure the main physical quantity for various vehicle tests by integrating the measuring equipment into a single measuring system.

The integrated data measuring device 50 for a vehicle according to the present invention uses an existing sensor as it is, but integrates a data collecting device and a monitoring device that collect and measure data from each sensor.

The integrated data measuring device 50 for a vehicle according to the present invention includes a pressure sensor 1, a speed sensor 3, a temperature sensor 2, a force and angle sensor 4, a torque sensor 5, and the like. Each signal can be received from the instrument to measure key physical quantities for various vehicle tests.

Kinds of physical quantity to be measured by test items are speed, temperature, stepping force, pressure, deceleration, acceleration, displacement, and so on.The example of calculating channel number for each physical quantity to develop integrated data measuring device is shown in Table 2. .

As shown in Table 2, in the case of speed, acceleration, RPM, and fuel economy, data is input by analog input method, and the number of sensor outputs is 2, 6, 7 in braking test, power performance test, and Joan performance test, respectively. The input channel requirements for the acquisition are five.

In the case of temperature, the data is input by the thermocouple input method, and the number of sensor outputs is 9, 13, and 2 in braking, power performance, and Joan performance test, respectively, and the input channel requirements for data collection are 13.

In addition, in case of pressure, pedal force, displacement (Pedal Travel Stroke), acceleration, angle / torque / angular velocity, and force, the data is inputted by the analog type of strain type. The number of sensor outputs is 12, 1 and 7, respectively, and the input channel requirements for data collection are 12.

The integrated vehicle data measuring device 50 is a signal conditioner and connector (62) capable of direct and simultaneous connection with various vehicle test sensors, and A / A for collecting various measurement data inputted from an input / output interface. D converter 66, digital signal input / output unit 64 (I / O; Input / Output) and D / A converter 63 for sensor control, amplifier 67 (AMP) for amplifying analog signals received from the sensor, Hardware such as a noise filter for removing signal noise is mounted inside the case.

The signal conditioner and connector 62 has an acceleration sensor (amplifier built-in) interface 73, a speed sensor (amplifier built-in) interface 74, an RPM sensor 75 (amplifier built-in engine tachometer) to receive signals from various sensors. , Fuel economy (amp built-in) interface 76, temperature sensor interface 77, pressure sensor interface 78, stepping sensor interface 79, displacement sensor interface 80, acceleration sensor interface 81, angle / torque / Angular velocity sensor interface 82.

The signal conditioner and connector 62 may amplify the amplitude of the signal received via the amplifier built-in interface.

Sensor-specific interfaces such as the acceleration sensor make it easy to connect various vehicle sensors to the integrated data measurement device and make it compatible with the measurement sensor system in use.

Through the signal conditioner and the connector 62, an analog / digital input / output interface board capable of directly and simultaneously connecting various vehicle test sensors can be realized, accommodating the channel quantity of each sensor and each measurement condition that meet the measurement needs, and in the future It can have sufficient scalability.

The vehicle integrated data measuring device 50 includes a voltage measurement data acquisition (DAQ) module 68, a temperature measurement data acquisition (DAQ) module 69, and a microvoltage measurement data acquisition (DAQ) module 70 in one case. It may be configured in an integrated form within 51a.

The voltage measurement data acquisition module 68 includes an A / D converter 66, a D / A converter 63, a digital I / O 64, and an embedded control logic unit 72.

The A / D converter 66 converts analog signals received from the acceleration sensor interface 73, the speed sensor interface 74, the RPM sensor interface 75, and the fuel economy meter interface 76 into digital signals to control the embedded control logic unit. The signal is transmitted to 72, and the built-in control logic unit 72 of the voltage measurement data acquisition module 68 measures the basic physical quantity, i.e., acceleration, speed, RPM, fuel economy, etc. based on the received digital signal.

The D / A converter 63 converts the digital signal received from the built-in control logic into an analog signal, so that the acceleration sensor interface 73, the speed sensor interface 74, the RPM sensor interface 75, and the fuel economy meter interface 76 are provided. Through the transmission to each sensor, the built-in control logic unit 72 of the voltage measurement data acquisition module 68 performs power and gain control of each sensor.

In this case, the gain control may lower the gain value if the input value input from the sensor is larger than the preset reference value, and maintain the size of the input signal constant by increasing the gain value if it is smaller than the reference value.

The digital I / O 64 is a device for converting analog input data of a sensor into digital output.

The temperature measurement data collection module 69 includes a thermocouple input 65 and a built-in control logic 72.

The thermocouple input unit 65 transmits a signal received from the temperature sensor interface to the built-in control logic unit 72, and the built-in control logic unit 72 of the temperature measurement data acquisition module 69 measures the temperature based on the received signal. do.

The microvoltage measurement data acquisition module 70 includes an A / D converter 66, an amplifier 67 (AMP), and an embedded control logic unit 72.

The amplifier 67 of the minute voltage input from the pressure sensor interface 78, stepping sensor interface 79, displacement sensor interface 80, acceleration sensor interface 81, angle / torque / angular velocity sensor interface 82 After amplifying the analog signal, the A / D converter 66 converts the amplified analog signal into a digital signal and transmits it to the built-in control logic unit 72, and the built-in control logic unit of the microvoltage measurement data acquisition module 70. 72 measures a basic physical quantity, ie pressure, stepping force, displacement, acceleration, angle / torque / angular velocity, etc. based on the received digital signal.

The voltage measurement data collection module 68, the temperature measurement data collection module 69, and the microvoltage measurement data collection module 70 transmit the measured data to the measurement control logic unit 71.

The measurement control logic unit 71 is software, and its functions can be broadly classified into data management functions, DAQ measurement control functions, and user interface functions.

The data management function is divided into detailed functions such as DAQ parameter DB, data management and analysis, DAQ measurement control logic module management, and data reporting.

The DAQ Parameter DB feature allows you to interactively define DAQ parameters and store the DAQ parameters in a DAQ parameter DB for library.

Data management and analysis functions can act as a data server such as backup, change, import / export, and compare and analyze data from various viewpoints such as code and project.

The DAQ Instrumentation Logic Module Management feature modularizes the logic required for DAQ control in software and stores it in a library.

The data reporting function automatically generates test results and various charts and reports.

The DAQ measurement control function is a detailed function that performs the modularization of measurement control logic by test code, which includes modularization of measurement control sequences, data compensation logic (S / W filter for noise control), and data conversion logic (distance-> velocity integration). It includes.

The user interface features are detailed and perform test code selection, sensor diagnostics, DAQ process control, and real-time display.

The test code selection function loads the DAQ parameters, the DAQ instrumentation control logic module.

The sensor diagnostic function performs the diagnostic functions of various I / O ports.

DAQ process control and real-time display provide a graphical user interface (GUI) for each test code to visualize trigger buttons and data.

The present invention can provide a noise shielding circuit and various shield-related hardware, such as a noise filter, to shield / reduce various noises resulting from the versatility and integration of the system.

The present invention is equipped with the above-described hardware device in one case 51 for the miniaturization / light weight of the equipment, a display device 51a such as a touch panel LCD on the front of the case 51 is provided, the case A plurality of input terminals are provided on the top and side surfaces of the 51.

For example, the power switch 52 and the operation indicator 53 are provided in the lower part of the display apparatus 51a, and the digital I / OInput / Output terminal 54 and the analog I / O terminal are provided on the upper surface of the case 51. 55, an RS-232c port 57, an RJ-45 lan terminal 56, a USB terminal 58, and the like are provided.

Also, a passive analog voltage input terminal 59, a thermocouple input terminal 60, an analog voltage input terminal 61, and the like are provided on the side surface of the case 51.

Therefore, according to the present invention, by providing an analog / digital input / output interface board and an integrated DAQ system capable of directly / simultaneous connection of various vehicle test sensors, it is possible to reduce equipment introduction cost when testing a vehicle by localization of equipment, and to improve investment efficiency. You can increase it.

In addition, it is possible to improve the efficiency of equipment operation due to the integration / portability of the measurement equipment, and it is possible to reduce the time and labor costs for learning how to use the equipment because you do not have to learn how to use the existing measurement equipment.

In addition, it is possible to secure the reliability of the vehicle test and improve the convenience of measurement due to the light weight and integration of the equipment.

In addition, the GUI for the design and user interface of the flexible, integrated DAQ software architecture enables automatic configuration of vehicle test-specific instrument control parameters.

50: integrated data measuring device
51: Case
51a: display device
52: power switch
53: operation indicator
54 digital input / output terminal
55: analog input and output terminal
56: RJ-45 lan terminal
57: RS-232c port
58: USB terminal
59: Passive analog input terminal
60: thermocouple input terminal
61: analog input terminal
62: signal conditioners and connectors
63: D / A Converter
64: digital input / output unit
65: thermocouple input
66: A / D Converter
67: amplifier
68: voltage measurement data acquisition device
69: temperature measurement data acquisition device
70: fine voltage measurement data acquisition device
71: measurement control logic
72: built-in control logic
73: acceleration sensor interface
74: speed sensor interface
75: RPM sensor
76: fuel economy meter interface
77: temperature sensor interface
78; Pressure sensor
79: step force sensor
80: displacement sensor
81: acceleration sensor interface
82: angle / torque / angular velocity sensor interface

Claims (3)

A connector connected to the vehicle test sensor;
A signal conditioner for amplifying a signal received from the vehicle test sensor and removing noise of the signal; And
An integrated data acquisition module configured to integrate a voltage measurement data acquisition module, a temperature measurement data acquisition module, and a microvoltage measurement data acquisition module for collecting various measurement data inputted from the vehicle test sensor;
Including, and integrated data measuring apparatus for a vehicle, characterized in that it is possible to integrate a plurality of measuring equipment.
The method according to claim 1,
The connector includes an acceleration sensor (amplifier built-in) interface, speed sensor interface, RPM sensor interface, fuel economy meter interface, temperature sensor interface, pressure sensor interface, step sensor interface, displacement sensor interface, acceleration sensor interface, angle / torque / angular velocity sensor interface And, the integrated data measuring device for a vehicle, characterized in that it is possible to directly and simultaneously connect a variety of vehicle test sensors.
The method according to claim 1,
The integrated data collection module includes an A / D converter for converting analog signals received from various vehicle sensors into digital signals;
A D / A converter converting a digital signal into an analog signal for controlling power and gain of the sensor;
A digital signal input / output unit (Input / Output) for inputting / outputting a digital signal;
An amplifier for amplifying the analog signal; And
A noise filter for removing noise;
Vehicle integrated data measuring apparatus comprising a.

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