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The KL-620 Microcomputer Sensing and Control System is a comprehensive
sensor/transducer control training system that incorporates
industrial-grade components with various control circuits and
load units. Its modular and closed-loop control circuits allow
implementation of open-ended, individual control loops used in
industrial applications.
The KL-620 uses only industrial-standard
sensors/transducers (0~10V, 4~20mA) and is equipped with RS-232
for computer interface control experiments. Control programs can
be written and down-loaded to the Single-Chip microprocessor on
KL-62001 main unit from computer through RS-232 interface.
FEATURES
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Suitable for teaching microprocessor
interfacing to a range of sensors and transducers.
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Uses industry standard 0~10V, 4~20mA
devices.
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Features RS-232 interface for connection
to personal computer.
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Built-in 8031 microcontroller and monitor
EPROM.
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8 experiment modules form basis for nearly
40 fully documented experiments.
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8 further optional modules available
adding 22 additional experiments.
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Main units and experiment modules also
available separately for economical construction of class sets.
LIST OF EXPERIMENTS
STANDARD MODULES:
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KL-64001: Photo Transistor/Interrupter & Hall
Effect Sensor
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KL-64002: Pyroelectric Detector & Reed Switch &
Thermistor & Mercury Switch Sensor
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KL-64003: Limit Switch & Vibration Switch &
Condenser/Dynamic Microphone Sensor
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KL-64004: Gas/Smoke & Ethanol Sensor
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KL-64005: AD590 Temperature & Humidity Sensor
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KL-64006: Infrared TX/RX & Ultrasonic TX/RX
Sensor
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KL-64007: Pressure & Strain Gauge Sensor
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KL-64008: Hall Current & Proximity Sensor
OPTION MODULES:
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KL-64009: CDS & Photovoltaic Sensor
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KL-64010: V/F Converter
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KL-64011: F/V Converter
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KL-64012: RTD (PT-100) Sensor
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KL-64013: Level (Water) Sensor
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KL-64014: Fiber Optics Communication
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KL-64015: LVDT Sensor
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KL-64016: Rotation Angle Sensor
THE KL-620 MAIN
UNIT
The main unit incorporates all necessary
equipment for use with the eight standard and eight
optional plug-on training modules. A socketed
industry-standard 8031 microcontroller is fitted to the
system, along with a monitor EPROM, and may be programmed
from an IBM compatible personal computer by way of an
RS-232 link.
The main unit also
contains a 12-bit analogue to digital converter and 12-bit
digital to analogue converter, as well as amplifiers and a
multi-rail power supply.
KL-620
STANDARD EQUIPMENT MODULES
Eight modules form the basis
for nearly 40 experiments detailed in the comprehensive
experiment manual. Each module contains the experiment circuit
which is clearly illustrated by a cicuit diagram on its top
panel.
KL-64001 Photo Transistor/Interruptor and
Hall Effect Sensor Experiment Module
KL-64002 Pyroelectric Detector, Reed Switch,
Thermistor, and Mercury Switch Experiment Module
KL-64003 Limit Switch, Vibration Switch, and
Condensor/Dynamic Microphone Experiment Module
KL-64004 Gas/Smoke and Ethanol Sensor
Experiment Module
KL-64005 AD590 Temperature and Humidity
Sensor Experiment Module
KL-64006 Infrared TX/RX and Ultrasonic TX/RX
Sensor Experiment Module
KL-64007 Pressure and Strain Gauge Sensor
Experiment Module
KL-64008 Hall Current and Proximity Sensor
Experiment Module
The full list of experiments performed using
the above standard modules and detailed in the experiment
manual are:
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Characteristics
and applications of photoconductive detectors
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Characteristics
and applications of magnetic sensors
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Characteristics
and applications of magnetic Hall sensors
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Characteristics
and applications of pyroelectric detectors
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Characteristics
and applications of reed switches
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Characteristics
and applications of thermal sensors
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Characteristics
and applications of mercury switches
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Characteristics
and applications of limit switches
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Characteristics
and construction of various switches
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Characteristics
and applications of microphones
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Principles and
applications of gas/smoke sensors
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Principles and
applications of ethanol sensors
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The construction
of the AD590 temperature transducer
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The
characteristics of the AD590
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The transduction
principles of the AD590
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The applications
of the AD590
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The
classification of humidity sensors
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The construction
and characteristics of humidity sensors
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The applications
of humidity sensors
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The
characteristics of infrared (IR) transducers
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The driver
circuits of IR transducers
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The receiver
circuits of IR transducers
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The applications
of IR transducers
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The
characteristics of ultrasonic waves
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The generation of
ultrasonic waves and the design of vibrators
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The transmission
and reception of ultrasonic waves
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The applications
of ultrasonic transducers and the field of incremental
control and instrumentation
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The construction
of pneumatic pressure sensors
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The operating
principles of pressure transducers
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The applications
of pressure transducers
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The principle of
strain gauges
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The construction
of strain gauges
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The
characteristics of strain gauges
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The transduction
circuit of strain gauges
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The applications
of strain gauges
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The operating
principle of a magnetic device
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The application
of Hall-effect devices in detecting current
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The construction
of proximity switches
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The application
of capacitive proximity switches in detecting metal objects
KL-620
OPTIONAL EQUIPMENT MODULES
Eight
further modules may be added to the KL-620 system, adding a
further 22 experiments. Again, each module contains the
experiment circuit which is clearly illustrated by a cicuit
diagram on its top panel.
KL-64009 CDS and Photovoltaic Sensor
Experiment Module
KL-64010 Voltage to Frequency (V/F)
Experiment Module
KL-64011 Frequency to Voltage (F/V)
Experiment Module
KL-64012 Resistance Temperature Detector
(PT-100) Sensor Experiment Module
KL-64013 Level (Water) Sensor Experiment
Module
KL-64014 Fibre Optic Communications
Experiment Module
KL-64015 LVDT Sensor Experiment Module
KL-64016 Rotation Angle Sensor Experiment
Module
The full list of experiments performed using
the above optional modules and detailed in the experiment
manual are:
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Chracteristics of
CDS photoconductive cells
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The application
of a light control circuit
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Chracteristics of
photovoltaic cells
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Principles of
photoelectric conversion
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Applications of
photovoltaic cells
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Principles of
Voltage to frequency (V/F) conversion
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Principles of
frequency to Voltage (F/V) conversion
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The operation of
a photo encoder
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Characteristics
of resistance temperature detector (RTD)
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The construction
of a PT-100 RTD sensor
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Characteristics
of PT-100 RTD sensors
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The transduction
circuit of a PT-100 RTD sensor
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Applications of
PT-100 RTD sensors
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The level (water)
sensor digital circuit
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Principles of
level control
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Fibre optic
characteristics
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Fibre optic
transmitter and receiver
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The construction
of LVDT sensors
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The
characteristics of LVDT sensors
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Signal
conditioning for LVDT sensors
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Applications of
LVDT sensors
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Principles and
applications of rotation angle sensors
SPECIFICATIONS
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KL-620 Main Unit
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Fixed DC Power Supply
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Voltage range: +5V, -5V,
+12V and -12V
Maximum current output: 3A for +5V rail, 1.5A for +12V
rail, 300mA for others
Output overload protection |
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Interface Port |
RS-232C interface,
25-pin D-type connector |
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Single-Chip
Processor |
8031 microcontroller
fitted in ZIF socket
8 control lines
DRAM used for adjustable sensor reference value
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EPROM
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2764 or equivalent
fitted in ZIF socket |
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Status
Display |
(1) Input voltage
measurement
Range: 2000mV, 20V
Accuracy: ±0.05% of reading + 4 counts
Input impedance: 10MW
Display: 4½ digits
(2)Sensor input measurement
Sensor types: TEMP, %RH, LUX, WEIGHT, AUX
Accuracy: ±0.05% of reading + 4 counts
Display: 4½ digits |
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Preset
Level |
4-digit thumbwheel
switch
Maximum value: 4095 |
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D/A
Converter |
One 12-bit DAC
Resolution: 1.22mV/bit
Analogue output and control:
OUT + : +DC OFFSET 0V ~ +4.096V unipolar
OUT - : -DC OFFSET 0V ~ -4.096V unipolar
OUT BP: DC OFFSET -2.048V ~ +2.048V bipolar |
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A/D
Converter |
One 12-bit ADC
Resolution: 1.22mV/bit
Input voltage range: 0V ~ +5V
Time pulse frequency: 3.579545MHz
Control signals: state, pole, over Voltage indication
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Amplifiers
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Instrumentation
amplifier: ±Vi input, Vo output, adjustable gain
Differential amplifier: ±Vi input, Vo output
Comparator: ±Vi input, Vo output
Alarm amplifier: buzzer with driver circuit |
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Selectors
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PIO/single-chip selector
Manual/single-chip selector |
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Potentiometer |
100KW,
B-type |
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Accessories
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Power lead, connecting
leads, PC link cable, fuse, dust cover, software disk,
and user manual
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Power
Supply |
110/220V AC ±10% 50/60Hz
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