WINSUN Human body infrared induction module HC-SR501 pyroelectric infrared sensor wiring length 1 meters and outer bo

Sensor lead description:

Blue line (GND) connected to the negative power supply

Red line (OUT) as the signal output

The black line (VCC) with positive power supply

Technical parameters:
1 working voltage: DC5V to 20V
2 static power consumption: 65 A
3 level output: high 3.3V, low 0V
4 time delay: adjustable (1 sec ~18 seconds)
5 blocking time: 2.5 seconds
6 trigger mode: L can not be repeated, H can be repeated, the default value is L
7 sensing range: less than 120 degrees cone angle, about 3 meters
8 working temperature: -15~+70 degree
9.PCB outline size: 32*24mm, screw hole distance 28mm, screw aperture 2mm, induction lens size: (diameter):23mm (default)

Functional characteristics:
1 full automatic induction: when someone enters the range of its induction is input high level, people leave the induction range automatic delay off high level. Output low level.
2 photosensitive control (optional): the module is set aside to have a position, can be set photosensitive control, daytime or light intensity does not feel. Photosensitive control for the optional features, the factory did not install the photosensitive resistance. If required, please purchase the photosensitive resistance./item.htm?spm=a1z10.3.0.115.OhM567&id=16056873011&)Their own installation.

Two 3 trigger modes: L can not be repeated, H can be repeated. Select jumper, the default is L.
A. can not repeat the trigger mode: that is, after the high level of induction output, the end of the time delay, the output will automatically change from high to low.
B. repeatable trigger mode: induction output high level, in the delay time, if there is a human activity within its sensing range, the output will remain high level, until the people left to delay will be the high level variable for low level (induction module detects human body every time after the event will be automatically etended a delay time and the last time for the starting point of the time delay).
4. With induction time blocked (default settings: 2.5 seconds): induction module in every induction output (high level variable to a low level), can be followed by a blocked time setting, in this time period in the inductor does not receive any induction signal. This function can be realized (induction time and blocking time), and can be applied to the interval detection products. At the same time, this function can effectively restrain the interference generated during the load switching process.
5 wide operating voltage range: the default operating voltage DC5V to 20V
6 micro power consumption: static current of 65 A, especially suitable for battery powered electrical products.
7 output high level signal: can be convenient to achieve docking with all kinds of circuit.

Human body infrared induction module wiring diagram

Sensitivity adjustment: clockwisesensitivityHigh, counter clockwise low sensitivity.

Time delay adjustment:ClockwiseEtended delayCounterclockwise, shorten the delay.

Application range:
Pyroelectric infrared switch is a BISS0001 with pyroelectric infrared sensor and a small amount of eternal components constitute the passive infrared switch. It can automatically and quickly open all kinds of incandescent lamp, fluorescent lamp, buzzer, automatic door, electric fan, drying machine and automatic washing machines and other devices, is a high-tech products. Particularly suitable for enterprises, hotels, shopping malls, warehouses and home of the corridor, corridor and other sensitive areas, or for the safety of the regional automatic lighting, lighting and alarm systems.
- security products - body induction toys
- the human body induction lamp - industrial automation control etc.

instructions
1 after the induction module has a minute or so of the initialization time, during which the module will be spaced out 0-3 times, one minute after the standby state.
2 should try to avoid lights and other interference sources close to the surface of the lens module, in order to avoid the introduction of interference signal to produce false action, the use of the environment to avoid the flow of wind, the wind will cause interference to the sensor.
Through to reach 3. Induction module using dual probe, the probe of the window is a rectangle, double yuan (a B yuan yuan) in a long direction at both ends, when the body from left to right and from right to left and walk, IR dual time, distance, there is a difference, and the difference is bigger and bigger, the induction is more sensitive, when the human body from the positive to the probe or from top to bottom or from the net direction, dual detection to infrared spectral distance changes, no difference, therefore, induction is not sensitive or not, so the installation of the sensor probe dual direction and human activities most direction as parallel, to ensure the human body after has been double probe yuan induction. In order to increase the angle sensing range, the module using a circular lens, also makes the probe surrounded by induction and is still but the left and right sides of the larger than on two direction sensing range and sensitivity, installation still as possible according to the above requirements.

Basic knowledge of pyroelectric sensor

The pyroelectric effect is similar to that of the piezoelectric effect, and it is the phenomenon that the surface charge of the crystal is caused by the change of temperature. Pyroelectric sensor is a temperature sensitive sensor. It is composed of the oides or ceramic piezoelectric element, element and two surface made of electrode, in the monitoring range of the sensor temperature delta t change, heat releasing electric effect in the two electrodes will produce the charge Q, namely between the two electrodes produce a weak voltage Delta V. Due to its high output impedance, there is a field effect tube in the sensor to carry out impedance transformation. Heat release electric effect arising from charge Q will be air ion binding and disappear, namely when the environment temperature is stable, delta T = 0 sensor no output. When the human body into the detection zone, as a result of differences between the body temperature and ambient temperature, delta T, delta T output; if the human body into the detection zone does not move, the temperature does not change, the sensor has no output. So the sensor detects the activity of the human or animal. The eperimental results show that the sensor does not add optical lens (also called Finel lens), the detection distance is less than 2m, and with the optical lens, the detection distance can be greater than 7m.

Use should pay attention to the following points:

First, DC voltage must meet the demands that we value, too high or too low will affect the performance of the module, and power requirements must after good voltage stabilizing filter, such as computer USB power supply, mobile phone charger, compared with the old 9V laminated battery are unable to meet module work requirements, recommends that customers use of power transformer and after a three terminal voltage stabilizing chip through the 220uF capacitor filter after the power supply.

Second, when debugging the body as far away from the sensing area, sometimes although body in front of the module, but the body from the module too close modules can also induction to cause has been output, and debugging human don't touch part of the circuit will also affect the module and more scientific way is the output end is connected with a LED or multimeter, the module with a newspaper to cover, left the room, 2 minutes after see modules are or have been output have?

Third, module is not connected with the load to work, after load connected to the work of disorder, one reason is because the power supply capacity of very small load is power, work load caused by voltage fluctuations lead to the module malfunction. Another reason is load interference will be generated when the electric work, such as relay or solenoid inductive load will produce back EMF, 315m launching board work will electromagnetic radiation will affect the module. The solution is as follows: A, the power supply part and inductance filter. B, the use of load and module using different voltage methods, such as: the load using the 24V operating voltage, the module uses the 12V operating voltage, during which the three terminal voltage regulator isolation. C: uses a larger capacity power supply.

Fourth, the human body induction module can only work in the room and the working environment should avoid the sun, strong light direct eposure, if the working environment has a strong radio frequency interference, you can use the shielding measures. In case of strong flow interference, or close the doors and windows to prevent convection. The sensing area to avoid facing the heating appliances and objects and debris easily by the wind and clothing.

Fifth, human body induction module is recommended to install in a sealed bo, otherwise it may always have the output signal.

Sith, if the requirements of human body induction module detection angle less than 90 degrees can with opaque tape shielding lenses or cutting narrow the lens to achieve.

Seventh, the human body induction module uses the dual probe, the human body's hands and feet and the head movement direction and the induction sensitivity are closely related, and the characteristic of the infrared module has decided not to accurately control the induction distance.

Eighth, the module of the probe (PIR) can be mounted on the other side of the circuit board. Can also be used to etend the probe with a dual core shielded wire, the length should be within 20 cm.