The
Bluetooth function of LD2410C is enabled by default, and Bluetooth can
be turned off or turned on through the serial port protocol (see LD2410C
serial port communication protocol.pdf). If the bluetooth has been
turned off, or the serial port cannot be used, the bluetooth can be
turned on again after the module is powered off and then powered on for
more than 5 times within 2~3s.
1. Product introduction
HLK-LD2410C
is a high-sensitivity 24GHz human presence status sensing module
developed by Hilink Electronics. Its working principle is to use FMCW
frequency-modulated continuous wave, to detect human targets in the set
space, combined with radar signal processing, accurate human body
induction algorithm, to achieve high sensitive human presence status
sensing, which can identify the human body in motion and stationary
state, and can calculate auxiliary information such as the distance to
the target.
This
product is mainly used in indoor scenes to sense whether there is a
moving or micro-moving human body in the area, and output the detection
results in real time. Farthest sensing distance up to 6 meters, distance
resolution 0.75m. Provides a visual configuration tool, which can
easily configure the sensing distance range and sensing in different
intervals sensitivity and unmanned delay time, etc., to adapt to
different specific application needs.
Support GPIO and UART output, plug and play, and can be flexibly applied to different smart scenarios and terminal products.
![](https://ae01.alicdn.com/kf/S32d87677c8314b959110f8234af73e44W.jpg)
2. Product Features and Benefits
2.1 Features
Plug and play, easy assembly
The longest sensing distance is up to 5 meters
Large detection angle, coverage up to ±60 degrees
Accurate
identification within the interval, support the division of the sensing
range, and shield the interference outside the interval
Multi-level intelligent parameter adjustment to meet the needs of scene changes
Visual debugging and configuration tools
Small and simplified, the minimum size is only 16mmx22mm
Supports various installation methods such as ceiling hanging and wall hanging
24GHz ISM band, compliant with FCC and CE spectrum regulations
5¢¦12V wide voltage power supply
The ultimate cost-effective choice
2.2 Benefits
LD2410C
human body sensing module adopts 24GHz millimeter wave radar sensor
technology. Compared with other solutions, it has obvious advantages in
human body sensing applications:
1.
In addition to being sensitive to moving human bodies, it can also
sensitively sense static, micro-moving, sitting and lying human bodies
that cannot be identified by traditional solutions;
2.
It has good environmental adaptability, and the sensing effect is not
affected by the surrounding environment such as temperature, brightness,
humidity and light fluctuations;
3.
It has good shell penetration and can be hidden in the shell to work
without opening holes on the surface of the product, which improves the
aesthetics of the product;
4.
It can flexibly configure the farthest sensing distance and the
sensitivity on each distance door to achieve flexible and fine
personalized configuration.
3. Application scenarios
The
LD2410C human body sensing module can detect and identify the human
body in motion, fretting, standing, sitting and lying down. It supports
multi-level parameter adjustment and can be widely used in various
scenarios of AIoT. The common types are as follows
It
senses whether there is someone in the space, and automatically
controls lights, such as lighting equipment in public places, various
sensor lights, bulb lights, etc.
Automatically
turn on when people come, and automatically sleep when no one comes to
save power, information delivery is more accurate and efficient
UV lamp work protection, to prevent the UV lamp from being turned on when there are people around and causing personal injury
Automatic
detection and alarm of dangerous places to prevent people from entering
specific high-risk spaces, such as high-risk places entered by
personnel from coal mine blasting
When
there is no one in the room for a long time, the TV, air conditioner
and other electrical appliances are automatically turned off, saving
energy and safety
Detection and identification of people intruding, staying, etc. within the specified range
![](https://ae01.alicdn.com/kf/Sc2119feddd484772ab6fba9bc117116fZ.jpg)
4. Hardware Description
4.1 Features
![](https://ae01.alicdn.com/kf/S96d71bd82efd4d38a67af82e6f3f5769s.png)
Module size: 7mmx35mm, 5 pin holes are reserved in the hardware (the factory default does not match the pins)
The pin hole diameter is 0.6mm, and the pin spacing is 2.54mm.
4.2 Pin definition
![](https://ae01.alicdn.com/kf/S465c864d114848b991d6ce5775ddae91h.png)
5. Visual Configuration Tool Description
In
order to facilitate the user to test and configure the module quickly
and efficiently, a PC configuration tool is provided. The user can use
this tool software to connect the serial port of the module, read and
configure the parameters of the module, and receive the detection
results reported by the. module. Data, and real-time visual display,
which greatly facilitates .the use of users.
How to use the host computer tool:
Use the USB to serial port tool to connect the module serial port correctly
Select
the corresponding serial port number in the host computer tool, set the
baud rate to 256000, select the engineering mode, and click to connect
the device
After
the corresponding is successful, click the start button, the right
graphical interface will display the test results and data
After
connecting, if the start button is not clicked, or click stop after
starting,the mode parameter information can be read or set
Note:The parameters cannot be read and configured after clicking start, and configuration can only be performed after stopping.
The interface and common functions of the host computer tool are as follows:
![](https://ae01.alicdn.com/kf/S376a6378cda24bf29a9c6f7b5a6beb40R.png)
The
ball is the target state output indication: red means that there is a
moving target, and purple means that there is a stationary target:,Green
means no one.
![](https://ae01.alicdn.com/kf/Sc9bce1c12065409782c55a621b151e83Z.png)
6. Bluetooth instructions
6.1 Install software (English version)
Currently the APP supports Android and IOS platforms, you can download it from this link: (Android)
You can also go to major app stores to search for "HLKRadarTools" and install it.
![](https://ae01.alicdn.com/kf/S2290c770f5c542ab93da49ee614f31b7n.png)
6.2 Instructions
Open
the app, and the app searches for nearby radar devices. The broadcast
name of the device is "HLK-LD2410C_xxxx" (xxxx is the last four digits
of the mac address). After the module is successfully connected, you can
view the radar information, or debug and save the parameters.
The use distance of the APP should not exceed the Bluetooth signal range (within 4 meters).
![](https://ae01.alicdn.com/kf/S0051265c8983479d97f3a17da5fced84F.png)
The process of modifying the radar parameters of the Bluetooth APP is the same as that of the PC host computer tool.
6.3 Turn on bluetooth again
The
Bluetooth function of LD2410C is enabled by default, and Bluetooth can
be turned off or turned on through the serial port protocol (see LD2410C
serial port communication protocol.pdf). If the bluetooth has been
turned off, or the serial port cannot be used, the bluetooth can be
turned on again after the module is powered off and then powered on for
more than 5 times within 2~3s.