SN-SHK Shock Sensor User`s Manual

SN-SHK Shock Sensor User`s Manual
SN-SHK
Shock Sensor
User’s Manual
V1.2
February 2011
Information contained in this publication regarding device applications and the like is intended through suggestion only and may
be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. No
representation or warranty is given and no liability is assumed by Cytron Technologies Incorporated with respect to the accuracy
or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Use
of Cytron Technologies’s products as critical components in life support systems is not authorized except with express written
approval by Cytron Technologies. No licenses are conveyed, implicitly or otherwise, under any intellectual property rights.
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Product User’s Manual – Shock Sensor
Index
1. Introduction and Overview
1
2. Product Specification and Limitations
2
3. Product Layout
3
4. Getting Started
5
5. Warranty
7
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Product User’s Manual – Shock Sensor
1. INTRODUCTION AND OVERVIEW
Shock and impact sensors are devices that detect sudden or severe impact at a predetermined
level and indicate whether the level has been exceeded. Shock sensors are a type of
transducer that responds to shock energy by producing another type of energy signal, usually
electrical. Shock sensors are essentially seismic detectors which pick up vibrations. Shock
indicators are employed to check the adverse effect of excess shock on an item being
monitored. Shock sensors should be sensitive to shock, insensitive to any other property, and
should not influence the measured property. Shock and impact sensors are commonly used in
heavy industries.
Shock and impact sensors are used in many applications. Examples include automobile
security systems, military applications, and laboratory test equipment. Shock and impact
sensors are also used in industrial manufacturing equipment.
The product features include:
•
•
•
•
•
•
Single bit output
Small size makes it easy to conceal
Plastic housing to provide protection for the electronic circuitry
Indicator LED for indication of a shock
Compatible with all types of microcontrollers
High sensitivity to shock and impact
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Product User’s Manual – Shock Sensor
2. PRODUCT SPECIFICATION
2.1 Pin Definitions and Ratings
Pin
Red
Black
Name
Vcc
GND
Blue
Output
Function
Connects to Vcc (+5V to + 12V)
Connects to Ground
Connects to an I/O pin set to INPUT mode (or transistor/MOSFET).
This is an NPN output, when sensor detected shock it will short the
signal to GND, else the internal NPN transistor is open.
Table 2.1
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Product User’s Manual – Shock Sensor
3. PRODUCT LAYOUT
Pin connector
Indicator LED
Figure 3.1
Predetermined
level adjustor
Vcc GND Output
Figure 3.2
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Product User’s Manual – Shock Sensor
Part
Indicator LED
Predetermined level
adjustor
Pin connector
Description
The indicator LED will be ON when a shock is detected.
The predetermined level of the shock sensor can be adjust by
the adjustor, turning clockwise will increase sensitivity and
turning anticlockwise will reduce the sensitivity of the sensor.
The pin connectors need to be connecting to GND, Vcc and
I/O pin of microcontroller. Please refer the product
specification for the connection.
Table 3.1
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Product User’s Manual – Shock Sensor
4. GETTING STARTED
4.1 Connecting and Testing
Connect the 3-pin header to your circuit so that the black colour wire connects to ground, the
red color wire connects to Vcc and the blue colour wire connects to your output signal pin.
The unit output is LOW whenever there is shock detected. The output voltage of shock sensor
followed the voltage being pull up to in this case the Vcc when there is no shock detected.
please refer schematic in Figure 4.1 and Figure 4.2 for example application.
Figure 4.1: Example application for Shock Sensor (Without microcontroller).
Part
Shock Sensor
Connector
Vcc
Buzzer
S1
R1, R3, R5
R2, R4, R7
R6
Q1
Q2
Q3
Description
Connects to Shock Sensor, pin 1 to output (Blue color) color), pin 2 to
GND (Black color) and pin 3 to Vcc (Red color).
Connects to Vcc (+5V to + 12V)
Connects to buzzer (+5V to + 12V)
Reset button for the circuit.
10kΩ Resistor
1kΩ Resistor
220Ω Resistor
PNP transistor ( BC557)
NPN transistor ( BC547)
NPN transistor ( BC547)
Table 4.1
With reference to Figure 4.1, the buzzer will be ON when there is a shock detected, and the
buzzer will only OFF when the reset button being press. The buzzer is chosen depends on the
value of Vcc. 5V buzzer will be choose when Vcc is connect to 5V whereas 12V buzzer is
chosen when Vcc is connected to 12V.
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Product User’s Manual – Shock Sensor
Figure 4.2: Example application for Shock Sensor (With microcontroller).
Part
Shock Sensor
Connector
Vcc
R8
I/O pin of
Microcontroller
Description
Connects to Shock Sensor, pin 1 to output (Blue color), pin 2 to GND
(Black color) and pin 3 to Vcc (Red color).
Connects to Vcc (+5V to + 12V)
10kΩ Resistor
The output of the circuit need to connect to the I/O pin microcontroller
which set to ‘INPUT’ mode.
Figure 4.2
The application of shock sensor with microcontroller is shown in Figure 4.2, with reference
to the schematic, the output signal which sends to microcontroller will LOW wherever there
is a shock detected and HIGH when not detected. The output signal of shock sensor is needed
to be pull high as it is NPN output.
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Product User’s Manual – Shock Sensor
5. WARRANTY



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Product warranty is valid for 6 months.
Warranty only applies to manufacturing defect.
Damage caused by miss-use is not covered under warranty.
Warranty does not cover freight cost for both ways.
Prepared by
Cytron Technologies Sdn. Bhd.
19, Jalan Kebudayaan 1A,
Taman Universiti,
81300 Skudai,
Johor, Malaysia.
Tel:
Fax:
+607-521 3178
+607-521 1861
URL: www.cytron.com.my
Email: [email protected]
[email protected]
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