Engineering, Polytechnic and Vocational Training Equipment-> Microprocessor and PC Lab Experimental Interface Modules

1 [2] 3 4 [«Back ||Next »]   Click to Enlarge DUAL STEPPER MOTOR INTERFACE MODULE. MODEL IBL-IM ? 15 This is same as single stepper motor module, except in this there are two numbers of 3Kg/cm2 stepper motors are connected with interface electronics in this module. This module comes along with 3Kg/cm2 stepper motor/motors. Number of steps and direction are programmable. This module requires external control system. Specifications: Two numbers of 3Kg/cm2 Stepper motor supplied. Built-in power supply. Interface electronics included for two motors. Note: This experimental module can be interfaced to all Microprocessor trainers, Micro control trainers or IBM PC Add ? on card Model: IBR-1. See Enlarge Click to Enlarge MATERIAL HANDLING PLATFORM TRAINER. MODEL IBL-IM ? 16 Material handling in any automated production plant is a common site. The materials to be handled may be bottles, packets, metallic pieces, sub-assemblies, etc. In order to provide a similar feature, the material handling experimenter is designed. This demonstration unit consists of a) a stepper motor, with an unending continuous conveyor belt rotating over a free wheel. The shaft of the motor drives the belt. b) A proximity switch is placed looking over this moving belt, to detect any moving object. The output of this transducer is the feedback to the trainer. c) A programmable relay operating a motor is available as a controller for controlling an external 230V AC motor. The above setup is connected to the Microprocessor trainer, Model MPT-85. By programming the trainer, various schemes can be simulated. For example; a) counting of parts moving on the belt, b) switch OFF external motor, on detecting a part moving on the conveyor, c) make the conveyor move until the next part arrives near the proximity sensor and so on. This is a practical application simulator Specifications: Kg/Cm2 Stepper motor supplied. Built-in power supplies. Interface electronics included. An unending belt moving on a freewheel mechanism, driven by the motor. A proximity sensor with a detection range of 5mm. Relay which can operate a 230V AC device operating @ 250mA Note: This experimental module can be interfaced to all Microprocessor trainers, Micro control trainers or IBM PC Add ? on card Model: IBR-1. See Enlarge Click to Enlarge DC SERVO MOTOR DEMONSTRATOR. MODEL IBL-IM ? 17 Servo systems find extensive applications in position controllers. A typical example is in automatic positioning of radar. The position of radar changes during tracking. In order to determine the new position, the current position from the desired position is determined. The error is amplified and a control signal is sent to the controller. Thus, radar changes to its new position. This is also true in case of servo stabilizer. The DC Servo motor demonstrator is a Microprocessor based trainer. An optical position feedback sensor gives the status of the current position, to the controller. As the desired position is fed into the instrument, the difference between the current position and the desired position in terms of angular displacement is computed, and a control is issued. Using this trainer, the student learns how to program to position the shaft of the motor for the following: Program to run the motor in clockwise and anti-clockwise direction, Program to stop the motor after 1 rotation or multiples of 1 rotation, Program to change the direction of rotation after one rotation/s, Program to count the number of rotations executed, Program to position in steps of 5 degree or multiples of 5 degrees. The trainer consists of a DC Motor operating at 12V DC. The feedback is provided by two optical sensors. The interface electronics has amplifiers, detectors, drivers and power supply Specifications: 12V DC operated motor. Optical sensor to detect the current position of the shaft of the motor. Built-in signal conditioners, power drivers, and power supply. Note: This experimental module can be interfaced to all Microprocessor trainers, Micro control trainers or IBM PC Add ? on card Model: IBR-1. See Enlarge Click to Enlarge KEYBOARD DISPLAY INTERFACE. MODEL IBL-IM ? 18 This is used to show & design how an external keyboard can be interfaced to the Microprocessor Trainer Model MPT85. While designing dedicated keypads. The keyboard has 16 keys placed in 4x4 array. The user has to write the operating program to show how a calculator or a dedicated keyboard is accessed, and programmed to perform, various arithmetic functions like addition, subtraction, multiplication, division programs can be executed. This interface also is used to design any dedicated system keypad. For example, keyboard for microwave oven. Specifications: 16 robust keys are used. Keys are arranged in 4 X 4 matrix Status of keys are logged on an 8 BIT port. Programmable 8 bit LED port. Requires external power supply 5V DC @250mA Note: This experimental module can be interfaced to all Microprocessor trainers, Micro control trainers or IBM PC Add ? on card Model: IBR-1. See Enlarge Click to Enlarge TRAFFIC LIGHT EXPERIMENTAL MODULE. MODEL IBL-IM ? 19 Traffic light control experimental module is made up of array 20 LEDs. The LEDs are physically arranged on the front panel such that, they resemble traffic junction of a road. The traffic moves in all directions of NORTH, SOUTH, EAST and WEST. Colored LEDs are used to simulate RED, GREEN, and AMBER for each direction. In addition, 4 optical sensors are also used to signal the end of simulated traffic flow in each direction. There are LEDs, which simulate the flow of traffic. Now the student has to write program, following rudiments of traffic signal lights. Each LED is accessible as one bit of I/O ports of 8255. Test programs are supplied along with the kit. More programs are to be written by the student or a trainee. The instrument is supplied with built-in power supply. Specifications: Traffic: In 4 directions. Movement of traffic simulated by 2 LEDs in each direction. Sensors: 4 optical sensors. Signal: Red, Green and Amber LED in each direction. Every LED and optical sensors are bit-addressable. Built-in power supplies. Note: This experimental module can be interfaced to all Microprocessor trainers, Micro control trainers or IBM PC Add ? on card Model: IBR-1. See Enlarge Click to Enlarge LIFT SIMULATOR EXPERIMENTAL MODULE. MODEL IBL-IM ? 20 Lift simulator module, is an experimental module, to simulate the movement of lift in a building. This module consists of a row of LEDs, simulating various floors, and four momentary switches to simulate the request for lift service. These two sets of devices are connected as input and output ports of an 8255. By appropriately programming, for these devices, the simulation of LIFT operation can be studied. Essentially program skills are tested using this module, rather than creating a realistic approach to a lift control. Note: This experimental module can be interfaced to all Microprocessor trainers, Micro control trainers or IBM PC Add ? on card Model: IBR-1. See Enlarge Click to Enlarge REAL TIME CLOCK GENERATOR MODULE. MODEL IBL-IM ? 21 This module consists of a 1Mhz crystal controlled oscillator clock. The clock frequency is scaled down using a set of decade counters, to produce frequencies from 1 MHz down to 1 Hz in decade steps. These are available for providing as input to built-in timer 8253 on the Microprocessor trainer. See Enlarge Click to Enlarge LIQUID LEVEL/PROXIMITY/OPTICAL MODULE. MODEL IBL-IM ? 22 Three experiments can be performed on this module. 1) This is used to log liquid level (upper and lower level) of a liquid chamber. 2) To identify the presence of a metallic object within a range of 5mm from the transducer. 3) To detect the break in light incidence on the optical probe. The programs are written to identify the change in one of the parameters, and write a control program, to supervise and control external devices like relays, contactors etc based on the feedback status acquired from these three sensors. This module provides a means to demonstrate and understand how control systems are designed. See Enlarge Click to Enlarge LIQUID LEVEL CONTROL DEMONSTRATOR. MODEL IBL-IM-23 This demonstrator is an ON-OFF control interface instrument to Microprocessor trainer. It is intended to demonstrate how a Microprocessor controls the water level in a tank. This instrument consists of a 2-4 liter water tank. The ON and OFF of the pump is controlled by a 230V AC operated relay under program control. Two sensing electrodes monitor a bi-level i.e. lower level and upper level. The height of these electrodes is adjustable within the tank's limit. Control program identifies the status of these electrodes and switches ON or OFF the pump. A manual drain cock drains water from the tank, by turning the wheel valve. This is required to simulate the fall in water level. Specifications: Adjustable Bi-level sensing electrode. 2-4 liter water tank, with drain facility. Relay operated special purpose water pump Necessary couplings and tubes. Built-in power supplies. Note: Microprocessor trainer MPT-85 or IBM PC add-on card model IBR-1 is required. See Enlarge Click to Enlarge 8 BIT OPTO-ISOLATOR MODULE. MODEL IBL-IM-24 An Opto-Isolator is an interface device, which is used to connect digital signals optically and isolate electrically the recipient instruments. This isolation is required wherever mains bound noise is likely to infiltrate into the control device or systems. This module is used to optically connect external digital signals to Microprocessor trainer MPT-85 or IBR-1. This module has 4-bits connected as input and 4-bits as output. The electrical ground (earth terminal) of donor and recipient systems should not be tied together for proper function. This requires external power supply of +5V DC @ 400mA. See Enlarge Click to Enlarge MESSAGE PANEL DISPLAY INTERFACE. MODEL IBL-IM ? 25 Massage panel display is an alpha-numeric-graphic display interface console. The display is arranged as 40 x 7 LED dot matrix. Each and every LED of these 280 LEDs is independently port and bit addressable by MPT85 or IBR-1 through software. There is no fixed character generator ROM in the display module. This display console provides an opportunity to study the output port addressing, scanning, repeating, timing techniques used in any message display panel. The message characters must be programmed by the trainee/student. The system has a built-in power supply. The LED matrix is 10" x 1.75". See Enlarge Click to Enlarge PNEUMATIC TRAINER. MODEL IBL-IM ? 26 Pneumatic elements are extensively used in process control, machine control, design of robotic manipulators, etc. The objective of this trainer is to demonstrate how a Microprocessor controlled system, can control actuation of mechanical elements in the field of Pneumatics. Operating sequences can be changed by a mere change in program. Many experiments can be conducted using Pneumatic Trainer. Pneumatic trainer is an experimental instrument. It is intended to use this trainer, to study Fluidics by experimentation. This trainer contains pneumatic actuators and electronic transducers. These devices provide opportunity to study and experiment how industrial applications are working. These working principles are applicable to high-pressure pneumatic and hydraulic components. This trainer introduces some of the important types of fluid control devices, and explains how they are functioning. The controller provides facility to program for any specific function, like holding a job and riveting, move a job to the next place, change a sequence by observing the status of a feedback transducer, change time between two successive operations etc. It is necessary to note that, the above functions can be achieved by appropriately programming the controller. This trainer is one part, while the other is a controller. This trainer can be connected to any one of the following trainers as controllers. They are; a) Computer applications trainer, Model DAS-1 which is connected to an IBM PC/XT/AT Pentium computer, or b) with 96 line TTL I/O add-on card, Model IBR-1 which is connected to an IBM PC/XT/AT Pentium computer, or c) Microprocessor Trainer MPT-85. Programs are supplied in BASIC, when connected to the computer or in mnemonic language when connected to Microprocessor trainer. Features: The electronic interface devices used in this trainer are TTL compatible. Good experimental / demonstration training aid in FLUIDICS, or instrumentation laboratory. Can be used as an excellent output element in FEEDBACK CONTROL system design, as used in machine control like NC/CNC machines. Programmable in high level languages like BASIC, TURBO PASCAL, C, ASSEMBLY, or even in Machine language etc. as long as the support I/O instructions. Good documentation with experimental programs, and program listings in BASIC. Useful in engineering colleges, Polytechnics, Training Establishments, R/D Laboratories, Defense Laboratories etc. It is possible to accomplish the following functions. Study of controlling the movement of pistons in the power cylinders. Study and experiment BOOLEAN functions like AND, OR, NOT, EX-OR, NAND, memory etc. Feedback control using built-in transducers (sensors) as feedback elements. Timing between the movement of two or more pistons. Variable time sequence. Programming the sequence of actuation of pistons. Design Inter-locking programs. Implement your own logic system, with the available input output elements. To some extent, this becomes your prototype development instrument. In addition to the above, using some of our external experimental modules, the trainer becomes more versatile FLUID POWER TRAINER. A sample program is illustrated here, to explain how pneumatic cylinders are programmed in time domain. In this example, each piston extends and retracts with a time delay in a cyclic order. The operation repeats again and again, unless program execution is aborted. 10 port &H830E: REM "Set the port number 20 Delay = 600 REM " Set a delay period. Larger the delay number, longer the time between two successive operations 30 OUT PORT, 1: REM "Cylinder A's piston extend 40 FOR I=0 to delay: Next I 50 OUT PORT, 2 : REM" Holding current on D0 piston removed by applying a logic '0' and a logic'1' applied on D1 piston consequently A-piston RETRACTS. Strictly, this is not permitted. There should be some time delay, between switching OFF extending piston and switching ON retract piston. 60 FOR I = 0 TO DELAY: NEXT I 70 OUT PORT 4: REM "piston - A retract. Piston-B extends 80 FOR I = 0 DELAY: NEXT I 90 OUT PORT, 8: REM "Piston -B retracts 100 FOR I=0 TO DELAY: NEXT I 110 OUT PORT, 16: REM" Piston C extend 120 FOR I = 0 DELAY: NEXT I 130 OUT PORT, 32: REM" Piston-C retract 140 FOR I = 0 TO DELAY: NEXT I 150 OUT PORT, 64: REM "Piston -D extend 160 FOR I = 0 TO DELAY: NEXT I 170 OUT PORT, 128 : REM" Piston-D retract 180 FOR I = 0 TO DELAY: NEXT I 190 GOTO 30: REM " Indefinite loop. Go and execute the same again and again Specifications: 40mm bore x 5/8" pistons. 4Nos. 4-way-5 port double acting solenoids. 4 Nos., Mufflers. 8Nos. 3/8" Filter Line Regulation unit. 1 No LED indicator for piston status. 8 Nos. Optical transducer. 1 No. Proximity sensor (metal detector). 1 No. Bi-level water level transducer. 1 No All elements mounted on 3' x 3' inclined stand, standing at a height of 5'. TTL compatible logic interface provided. Dedicated DC power source provided. Note: Microprocessor trainer MPT-85 or IBM PC add-on card model IBR-1 or Computer Applications Trainer, Model DAS-1 is required. Controllers are not included with this instrument. Note: the user must provide Compressed air inlet pressure of 6Kg/cm2. We recommend ELGI make compressor of Model 105B, 230V AC single Phase. See Enlarge Click to Enlarge TEMPERATURE CONTROL TRAINER. MODEL IM-30 This temperature control trainer is a Microprocessor based instrument. This is an ON-OFF controller. This module must be connected to Microprocessor trainer Model MPT-85 or MPT-J-85 or MPT-86 or MCT-31/51 when you want to program at machine level. This trainer has provision to connect to IBR-1. This card is used as an ADD-On interface card, when you want to use higher level language like, C / C++, VB, or VC++ etc. The purpose of this trainer is to provide an experimental setup for the student to learn as an ON-OFF control, and experiment how a Microprocessor is used to log (acquire) analog data from the thermocouple, convert that to digital value using ADC, set an upper and lower cut-off points (temperatures) for ON-OFF control action, and display the converted data in the form of packed BCD format so that the display shows the actual temperature in terms of degree centigrade on Microprocessor?s display. This trainer has necessary signal conditioners, Instrumentation amplifiers, buffer amplifiers, room temperature compensator, and calibration multi-turn potentiometers for adjusting zero and span temperature. It has a 230V AC operated solid-state relay, which is used to switch OFF/ ON the relay. This is a programmable 230V AC outlet. You can connect 350Watt mini immersion heater at this socket. A ? Lt Boro-silicate glass beaker contains water, in which the water is immersed. The temperate of the water bath is measured using a mercury thermometer for cross verification. This is supplied along with this trainer. It is necessary for you to read the description of the equipment?s input output terminals, functions of each block and understand them before actually connecting the instrument. After this stage it is necessary to read the actual program for understanding software functions used in the actual program. Microprocessor programs are supplied along with this trainer Specifications: Thermocouple: RTD TYPE temperature transducer, which can be connected as sensing electrode, and also glass thermometer. Signal conditioner circuit: This consists of Instrumentation amplifiers, buffer amplifiers, room temperature compensator, Adjustment: For Zero and Span Heater: 350 Watts operating at 230V AC Container: ? Lt Borosilicate glass jar Converters: 8 bit ADC and DAC Compatible: With 8 bit-Microprocessor trainer Model MPT-85, or MPT-J-85 or, MCT-31 or with IBM compatible dedicated ADD-ON card model IBR-1. See Enlarge Click to Enlarge TEMPERATURE CONTROL TRAINER. MODEL IBL-IM-30A This trainer is same as IM-30 except that the heater control is by is activated by a proportional control action, instead of ON-OFF type. The rest of the system specifications remain same. See Enlarge Click to Enlarge FLEXIBLE MANUFACTURING TRAINER. MODEL IBL-IM-31 This is a flexible manufacturing system trainer. The purpose of the system is to sort out the wooden pieces and metal pieces, which are moving on a conveyor belt by a program. In order to facilitate this, the following are built into the system. They are a) There are two 12 inch conveyor belts. Each belt moves in the opposite direction of the other belt. b) Two programmable pneumatic pistons with 5 inch travel. c) Optical source to detect either metal or wooden moving parts on the conveyor belt when the light beam is cut. d) A metal detector transducer to detect the metal part moving on the conveyor belt. e) An external compressed air at 5Kg/cm2 is required to activate the pistons. In order to accomplish this task, the flexible manufacturing system is used. For that we need belt conveyor, which is driven by a motor in which the metal and wooden piece move. In order to sort out the metal piece we need a PROXIMITY transducer & OPTICAL transducer and piston to push the pieces for further rotation. Piston is basically a pneumatic one, for which we need a compressor to actuate the piston, to move the test piece forward for further rotation. Principle of Operation: - The test pieces (both metal & wooden) will move through belt conveyor driven by a motor in the system. First the test piece will pass through the OPTICAL transducer basic principle of transducer is whenever light from the source is obstructed by any object it goes to high state. If any test piece obstructs the light path to transducer from the source it gives signal to piston & piston will move the test piece for further rotation Once moved on to the other belt it will reach the PROXIMITY transducer. Transducer will differentiate the metal piece from the other pieces. Range of detection is about (0 - 5) mm. If it is above the range transducer will not detect metal parts. NOTE: This can be used with PLC trainer also. This trainer provides very good scope to understand how automation process can be designed. See Enlarge 1 [2] 3 4 [«Back ||Next »] Go to Top