search
person
What is Data Acquisition System (DAS) ?

2 Answers

Data Acquisition System (DAS)

image


 

•Data Acquisition System (DAS) is a interface between sensor and computer.

•The basic function of DAS is to convert Analogue signal coming from sensor to digital via A to D converter and fed to computer.

•DAS measures the quantity it may be physical or electrical like temperature, flow, level, pressure, voltage, current, sound etc.

•Sensor may be photo sensor, microphone, potentiometer, accelerometer, thermistor, strain gauge etc.

•In most cases after going through sensor signal may need to get amplified.

•Sensor converts the measuring quantity into unified form and then sampled by DAS.

•Sensor is connected to DAS hardware and DAS is connected to computer via Universal Serial Bus (USB).

•DAS hardware is microcontroller and combination of A to D, D to A converters and multiplexers, Random Access Memory (RAM) etc.

•For supporting DAS hardware there is a drivers software in computer.

•Computer process, measure and store the data.

•DAS applications are controlled by computer software made from C language or java.

•Computer analyze those phenomenon.

thumb_up_alt 0 like thumb_down_alt 0 dislike
thumb_up_alt 0 like thumb_down_alt 0 dislike

Related questions

Description : Draw block diagram of Data Acquisition System (DAS). Write function of each block.

Answer : Data Acquisition System(DAS) : - (Definition) - The function of DAS is to collect the input data efficiently, accurately, simultaneously to store and display the data. It consists of sensor or transducer ... - to output od DAS is provided in the form of display or plot or recoded in recorder.

Description : What is the need of data converters? List specifications of DAC.

Answer : Need of data converters:  It is often necessary that before processing the analog data, by a digital system, it should be changed to an equivalent digital form. Similarly, after processing the data, it ... 4. Temperature sensitivity 5. Settling time 6. Speed 7. Long term Drift 8. Supply rejection

Description : Data logger and its application

Answer : Data logger and its application:- A data logger or data recorder is an electronic device that records data over time or in relation to location either with a built in instrument or sensor ... Testing (including crash testing) 8) Motor Racing 9) Monitoring of relay status in railway signalling.

Description : Which unit holds data permanently?  (A) Input unit (B) Secondary storage unit (C) Output Unit (D) Primary Memory Unit

Answer : Which unit holds data permanently?  (A) Input unit (B) Secondary storage unit (C) Output Unit (D) Primary Memory Unit

Description : Find out number of data lines required to interface 16 LEDs arrange in the 4 x 4 matrix form.

Answer : 4+4=8, eight lines are required for 4x4 matrix of 16 LEDs

Description : Calculate the size of memory address space for a 16 bit data and 20 bit address bus. A) 1 MB B) 2 MB C) 3 MB D) 4 MB

Answer : Calculate the size of memory address space for a 16 bit data and 20 bit address bus. A) 1 MB B) 2 MB C) 3 MB D) 4 MB

Description : Which of the following is the product of data processing:  (A) Information (B) Data (C) Software programme (D) System

Answer : Which of the following is the product of data processing: Information 

Description : Explain data transfer mechanism in I2C protocol. Compare it with CAN and USB protocol based on bit rate and area of applications.

Answer : I2C (Inter-Integrated Circuit): I2C stands for Inter-Integrated Circuit. I2C is a serial protocol. It was developed by Philips Semiconductor. I2C bus have two communication lines. One is serial data ( ... Mbps this is used for lower speed devices. Using USB we can connect upto 127 devices.

Description : State any four functions of data acquisition system.

Answer : Functions of data acquisition system. 1. Handling of analog signals 2. Relates to the process of collecting the input data in digital form,as rapidly, accurately, completely and ... industry-standard computers providing a more powerful, flexible, and cost-effective measurement solution. 

Description : What are advantages and disadvantages of Mechatronics system? 

Answer : Advantages of Mechatronics system:  High level of integration.  Increased functionality and better design.  More use of electronics and software instead of mechanical function.  Assumes ... Its replacement is difficult, that it is difficult to change old system to new system. 

Description : What are the disadvantages of Open loop control system?

Answer : Open loop control system are less reliable. In open loop control system Optimization is not possible. Open loop control system are less accurate.

Description : What is the choice of size and number of generator units in interconnected power system?

Answer : Choice of Size and Number of Generating Units: 1. The size/rating and number of generating units in such way that they approximately match with the load curve as closely as possible. 2. In ... , if power plant is connected to grid system then generating unit of higher capacity can be installed.

Description : Draw and describe general Data acquisition system . 

Answer : Data acquisition is the process of sampling signals that measure real world physical conditions and converting the resulting samples into digital numeric values that can be manipulated ... are usually controlled by software programs developed using various general purpose programming languages

Description : Write objective of Data acquisition system.

Answer : Objectives of Data Acquisition System: It must monitor the complete plant operation to maintain online optimum and safe operations. It must provide an effective human communication system and be able to identify problem ... data. It must be reliable, and not have a down time greater than 0.1%.

Description : Data Acquisition system are used to measure and record analog signal in different ways i.e. : -  a) Signals which originates from direct measurement of electrical quantities b) Signals which originate from the ... which oscillates in simple harmonic motion and dies out slowly. d) Both (a) and (b)

Answer : Data Acquisition system are used to measure and record analog signal in different ways i.e. : - d) Both (a) and (b) Signals which originates from direct measurement of electrical quantities and Signals which originate from the use of transducer. 

Description : characteristics of Hi-Fi amplifier system.

Answer : Characteristics of HI-FI amplifier: 1. Signal to noise ratio should be better than 50dB. 2. Frequency response should be flat within +-1dB. 3. Nonlinear distortion should not be more ... provided. 6. Environmental conditions should be such as to eliminate the external noise in listening room. 

Description : DTH System

Answer : Outdoor unit: It consists of a receiving antenna, low noise amplifier & converter the receiving antenna is parabolic reflector with a horn as the active element. The horn can be ... fed to the normal domestic TV receiver, which after due processing reproduces picture & sound. 

Description : Describe the function of MUSE system for HDTV.

Answer : Bandwidth can be reduced by MUSE (Multiple Sub -Nyquist Sampling Encoding) system MUSE stands for Multiple Sub-Nyquist sampling encoding and is an HDTV bandwidth compression schemedeveloped by ... digital Audio system is called DANCE (Digital Audio Near-Instantaneous Compression and expansion). 

Description : requirements of a distribution system

Answer : Following requirements of a distribution system.  1. Layout should be simple in design. 2. It should have less initial cost 3. The distribution system should have minimum distribution ... stability of existing distribution system. 15. Time required for completion of work should be less. 

Description : Why radial distribution system used for short distance ? 

Answer : Because of following disadvantages radial distribution system is not used for long distance:  Since there is only one feeder to DTC feed at one point so, 1) There is no reliability ... more time for fault finding & repairing Hence radial distribution system is used for short distance.

Description : vertical deflection system and explain its operation.

Answer : The main function of the vertical deflection system , is to provide an amplified signal of proper level to derive the vertical deflection plates without any distortion. For amplification of the ... suppression, reduced nonlinear effects because none of the plates are at ground potential.

Description : Working of Simple Vapor absorption system

Answer : Working of Simple Vapor absorption system:  A Simple Vapor absorption system consists of evaporator, absorber, generator, condenser, expansion valve, pump & reducing valve. In this system ammonia ... where there is scarcity of Electricity and it is very useful at partial and full load. 

Description : Draw block diagram of CNC system and state function of each block.

Answer : (i) Input Devices: These are the devices which are used to input the part program in the CNC machine. There are three commonly used input devices and these are punch tape reader, magnetic ... Unit: A monitor is used to display the programs, commands and other useful data of CNC machine. 

Description : Write four advantages of FMS (Flexible Manufacturing System).

Answer : 1. Large variety of same products 2. Profitable investment. 3. Requires limited inventory. 4. Low labor cost. 5. Flexible system. 6. Speedy production. 7. Improve product quality. 

Description : List and explain the components of a hydraulic system.

Answer : Components Hydraulic: Hydraulic pump- Supply fluid to the components in the system. Pressure in the system develops in reaction to the load. Hence, a pump rated for 5,000 ... mechanical components and need to be removed along with other contaminants.  Seals, fittings and connections.

Description : Explain how MEMS accelerometer is used as airbag sensor for car system.

Answer : MEMS Accelerometer is used as airbag sensor: Mechanical ignition airbags fit inside the steering wheel pad. When a collision occurs, the inertial sensor moves, setting off a ... the airbag with wiring. This is especially effective when fitting both driver- and passenger-side airbags.

Description : Explain in brief how anti-lock braking system works

Answer : An ABS is a system on motor vehicles which prevents the wheels from locking while braking stopping safely is one of the most important functions a motor vehicle can perform. Diagram: ... to decrease the pressure on the braking circuit, effectively reducing the braking force on that wheel.

Description : Differentiate between pneumatic and hydraulic system. 

Answer : Pneumatic System Hydraulic System 1 Pneumatic system uses gas for power transmission, after compression and it is used as medium for carrying out mechanical work. ... : In industrial applications, air conditioners Applications: In petrochemical industries, oil refineries.

Description : Explain the Mechatronics system with the help of block diagram and labeled the various elements. 

Answer : The key elements of Mechatronics systems can be classified under following categories:  Information systems  Mechanical systems  Electrical systems  Computer systems  Sensor and actuators  ... is adjusted based on generated error and again signal is given to actuators and sensors.

Description : Describe the procedure for working of paging system.

Answer : Pager is a Simplex Communication Device. Paging Systems are communication systems that send messages to a subscriber. Message can be numeric or alphanumeric. Paging Systems are used to notify a subscriber ... message is sent by sender to his pager and the message will be displayed in the LCD.

Description : State the need of modulation in communication system.

Answer : Need of modulation:- 1. To reduce the height of antenna 2. To avoids mixing of signals 3. To increases the range of communication 4. To make multiplexing of maximum signal is possible 5. To improve the quality of reception

Description : Why solar system is preferred now a days ? Justify your answer. 

Answer : Since availability of fossil fuels like coal are limited in future so there is more importance of solar power in the energy deficient because of following advantages of solar power Fuel is ... .  10. solar system technology are ideally suited to distributed applications ( Decentralized system)

Description : Draw and explain integrated duration curve used in system operation. 

Answer : Diagram of integrated duration curve used in system operation: Explanation:  Integrated duration curve is obtained from load duration curve. It is drawn in between load on Y-axis in KW/MW and the X- ... a particular time of a day can also be shown on a curve which is called as mass curve. 

Description : Define measurement and state the significance of electrical measurement system.

Answer : Measurement: Measurement is essentially a process in which magnitude of a quantity is determined in comparison with another similar quantity with significant units. OR The measurement of a given ... x) The measurement conforms the validity of hypothesis and also adds to its understanding.

Description : State two advantages of digital system over analog system.

Answer : 1. They are less susceptible to noise. 2. The effect of fluctuation in the characteristic of the components, ageing of components etc. is very small in digital circuits. 3. Digital circuits have capability of memory which makes them suitable for computers. 4. More accurate.

Description : Draw block diagram of instrumentation system. State function.

Answer : Primary transducer: The sensor which comes in contact with the measurement medium to sense the quantity. Variable conversion element: the transducer which converts the sensor ... transmitted through suitable transmission medium to the operator or presented with the help of indicators.

Description : State the functions of fuel system and exhaust system of a diesel power station.

Answer : Fuel system: It supplies fuel to engine for combustion purpose. It consists of Fuel Pump: - It supplies fuel to engine for combustion purpose. Strainer: - Are provided to remove suspended impurities and ... most of the noise. Chimney:- To exhaust gases in the atmosphere as high as possible. 

Description : Draw the block diagram of basic wind energy conversion system and write function of each block. 

Answer : Block diagram of basic wind energy conversion system: OR Components of wind power plant and their functions:  1) Rotor /Blade/Aero-turbine: Blade extracts significant power from the ... stronger and smoother. Towers are supports to raise the main part of the turbine up in the air.

Description : Explain starting system in diesel electric power plant.

Answer : Starting system in Diesel Electric Power Plant: It includes Storage battery, compressed air tanks, self-starter etc. The purpose of engine starting system is to rotate the engine initially while ... as Ammeters, Voltmeters, Wattmeters, Thermometers, Pressure gauges, Visible and audible alarm etc.

Description : Explain fuel system and air intake system in diesel electric power plant.

Answer : Fuel system and air intake system in diesel electric power plant :  Fuel system: It consists of storage tank, strainers, fuel transfer pump and all day fuel tank. The fuel oil is supplied ... Filters are provided to remove dust particles from air which may act as abrasive in the engine cylinder.

Description : State any four advantages of interconnected system.

Answer : Advantages of interconnected Systems: i) Reduced Overall installed Capacity: Inter connected power systems reduce the overall requirement of installed capacity for a given load area. With ... to interconnection, there is optimum utilization of available natural resources in the country.

Description : State the functions of following elements: i) Diesel engine system ii) Air intake system iii) Engine exhaust system iv) Engine starting system.

Answer : i) Diesel engine system:-  Four strokes Two strokes ii) Air intake system:- Air intake system is provided to supply air to engine cylinder for fuel combustion.  iii) Engine exhaust system ... provided to rotate the engine initially until the firing starts and engine run under its own power. 

Description : Explain significance and purpose of electrical measurement system.

Answer : ➢ Significance of Electrical Measurement System  1. The measurement is required for measurement of all physical quantities for e.g speed, velocity, temperature, pressure etc.  2. All electrical ... 4. These standards and references may changes time to time, area to area person to person 

Description : Write short notes on 3 phase AC system.

Description : The permissible voltage variation in transmission and distribution system is:  (A) ± 0.1% (B) ± 1% (C) ±10% (D) ± 25%

Answer : The permissible voltage variation in transmission and distribution system is: ±10%

Description : Which of the following is the least expensive protection for over current in low voltage system?  (A) Rewireable fuse (B) Isolator (C) Oil Circuit breaker (D) Air break circuit breaker

Answer : Which of the following is the least expensive protection for over current in low voltage system?  (A) Rewireable fuse (B) Isolator (C) Oil Circuit breaker (D) Air break circuit breaker

Description : A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum permissible stress in the dielectric is not to exceed 20 kV/mm. For economical size, the overall core diameter of the cable is (A) 28.2 mm (B) 26.4 mm (C) 24.4 mm (D) 22.0 mm

Answer : A single core cable is designed to work for a single phase system with a peak voltage of 220 kV. The maximum permissible stress in the dielectric is not to exceed 20 kV/mm. For economical size, the overall core diameter of the cable is 22.0 mm

Description : When a V-V three phase transformer system is converted into a Δ-Δ system, increase in capacity of the system is (A) 86.6% (B) 50% (C) 57.7% (D) 73.2%

Answer : When a V-V three phase transformer system is converted into a Δ-Δ system, increase in capacity of the system is 73.2%

Description : steady-state stability of a power system is improved by

Answer : steady-state stability of a power system is improved by using double circuit line instead of single circuit line

Description : Power factor of the system is kept high?

Answer : Power factor of the system is kept high to reduce line losses, to maximise the utilization of the capacities of generators, lines and transformers, to reduce voltage regulation of the line.

← Prev Question Next Question →
editAsk a Question
...