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Model No: DYP-A21

High Precision Ultrasonic Sensor

The A21-module is based on the use of a closed split waterproof probe.
IP67 suitable for harsh environments.
The 3cm small blind area is suitable for different detection conditions.
It is a simple operation high-performance, high-reliability commercial-grade functional module.

Delivery :

EXW

minimum order :

10 units

Supply Ability :

10000units / Month

Stock Time :

7-10Day

Country of Origin :

Guangdong, China

Quantity :

Contact Now

High Precision Ultrasonic Sensor

Module : DYP-A21

The A21 module is an ultrasonic obstacle avoidance sensor designed based on robot automatic control application, focus on designing for problems on the current market ultrasonic sensor large blind spot, small measurement angle, long response time, poor installation adaptability and other problems ,the A21 module has a series of advantages like small blind spot, large measurement angle, short response time, the same frequency filtering interference, high installation adaptability, dust and waterproof, long life and high reliability.

The intelligent acoustic processing technology independently developed by our company can identify and filter the interference acoustic wave, and output data more stable and reliable,making the A21 module reduce the probability of same frequency ultrasonic interference to a certain extent, and meet the users' application needs for the complex environment in the filed of robot automatic control.

Here comes the detailed specifications of DYP-A21 :

Parameters	UARTauto	UART controlled	PWM pulse width	Switch volume	RS485	IIC	Unit	Remarks
Working voltage	3.3～24V	3.3～24V	3.3～24V	3.3～24V	3.3～24V	3.3～24V	V	DC
Standby current	-	≤5	≤5	-	7000	6000	uA
Average working current	≤6	≤6	≤6	≤6	≤10	≤8	mA
Blind area distance	≤3	≤3	≤3	≤3	≤3	≤3	cm
Flat object range	3～500	3～500	3～500	3～500	3～500	3～500	cm
Output response time	100～130	8～140	＜7	1500～2000	15～750	15～140	ms
Power working hours	≤1000	≤1000	≤1000	≤1000	≤1000	≤1000	ms
Working period	100～130	Controlled	Controlled	100～130	Controlled	Controlled	ms
Output method	automatic	Controlled	Controlled	automatic	Controlled	Controlled	-
Measurement accuracy at room temperature	1+(S*0.3％)	1+(S*0.3％)	1+(S*0.3％)	1+(S*0.3％)	1+(S*0.3％)	1+(S*0.3％)	cm
Temperature compensation	Compensate	Compensate	Compensate	Compensate	Compensate	Compensate	-
Single angle	40～65	40～65	40～65	40～65	40～65	40～65	°
Double angle	Level 40～65	Level 40～65	Level 40～65	Level 40～65	Level 40～65	Level 40～65	°
Double angle	Vertical 60～80	vertical 60～80	vertical 60～80	vertical 60～80	vertical 60～80	vertical 60～80	°

Remarks:

(1)The module exceeds 5S does not receive the control instruction will enter a low power consumption dormant state, when the power consumption current is the standby power consumption current;

(2)Typical data obtained by testing with temperature 25°C, humidity 65% RH, power supply 12V, and 100ms working cycle;

(3)The temperature is 25°C, the humidity is 65% RH, the measured object is a 50cm×60cm flat carton, and the transducer should be as vertical as possible. S represents the measurement distance;

(4)The output response time is 0.5~5 meter range test, the shorter the range, the faster the response time.

(5)Test data for single-angle modules,The measured object is the reference data obtained from the test of φ75mm×100cm white PVC pipe with a distance of 100cm.

(6)The center line of the two probes of the double-angle module is arranged horizontally with the ground，The measured object is the reference data obtained from the test of φ75mm×100cm white PVC pipe with a distance of 100cm.

(7)The center line of the two probes of the double-angle module is arranged vertically with the ground，The measured object is the reference data obtained from the test of φ75mm×100cm white PVC pipe with a distance of 100cm.

Product Features

The DYP-A21 ultrasonic sensor boasts a wide voltage power supply ranging from 3.33V to 24V, ensuring compatibility with diverse power sources. It features a 3cm standard blind area (with a minimum of 2.5cm achievable), enabling precise near-field detection. The farthest measurement range is configurable across 5 levels (50cm, 150cm, 250cm, 350cm, 500cm) via commands, offering flexibility for different scenarios.

Multiple output modes are available, including UART auto/controlled, PWM controlled, switch volume TTL level (3.3V), RS485, and IIC, with consistent functionality across modes. Notably, UART and PWM controlled modes support ultra-low sleep power consumption ≤5μA. The default baud rate is 115,200, adjustable to 4800, 9600, 14400, 19200, 38400, 57600, or 76800 for flexible communication.

With millisecond-level response time (as fast as 13ms for data output), the sensor ensures real-time feedback. It offers selectable single/double angle configurations: single angle supports 4-level adjustments (40°, 45°, 55°, 65°), while double angle allows 4-level settings for horizontal angles (45°, 50°, 55°, 65°) and vertical angles (60°, 65°, 70°, 80°), adapting to various application needs. Equipped with a 5-grade noise reduction function, it withstands battery, USB (short/long-distance), switch power, and high-noise power supplies. The intelligent acoustic wave processing technology employs built-in algorithms to filter interference waves, outputting"FFFE"to prompt same-frequency interference and enhancing accuracy by 80% in such environments.

The DYP-A21 ultrasonic sensor is a standout component for arduino car obstacle avoidance, designed to elevate precision in navigating complex environments. As a core tool for arduino obstacle avoidance, it delivers rapid distance readings, making it indispensable for collision avoidance robot systems that require split-second decisions. This sensor excels in powering object avoidance robot setups, ensuring seamless maneuvering around stationary and moving obstacles alike.

In arduino car obstacle avoidance scenarios, the DYP-A21 shines with its ability to detect obstacles at varying distances, enabling smooth adjustments to speed and direction. For arduino obstacle avoidance projects, it integrates effortlessly with Arduino boards, simplifying the setup process for both beginners and experts. As a key part of a collision avoidance robot, it provides consistent data to prevent impacts, even in cluttered spaces.

The sensor’s versatility extends to object avoidance robot applications, where its wide detection range ensures no obstacle goes unnoticed. What truly sets it apart is its performance in dynamic obstacle avoidance—whether tracking moving objects or adapting to sudden changes in the environment, the DYP-A21 maintains accuracy, making it ideal for dynamic obstacle avoidance tasks in busy settings.

For arduino car obstacle avoidance systems, the DYP-A21’s quick response time is critical, allowing the car to brake or turn in time to avoid collisions. In arduino obstacle avoidance setups, it works alongside other components to create a robust navigation system, enhancing the reliability of the entire project. As a foundational element of a collision avoidance robot, it ensures the robot can operate autonomously without human intervention.

Object avoidance robot designs benefit greatly from the sensor’s durability, as it withstands vibrations and minor impacts during operation. Its role in dynamic obstacle avoidance is further strengthened by its ability to filter out noise, ensuring only valid obstacle data is processed. Whether used in arduino car obstacle avoidance, arduino obstacle avoidance experiments, collision avoidance robot prototypes, object avoidance robot kits, or dynamic obstacle avoidance research, the DYP-A21 proves to be a reliable and high-performance choice, consistently meeting the demands of diverse robotic navigation challenges.

Support the power supply noise reduction level setting

Scope of Application

Module DYP-A22 mainly used in Robot avoidance, automatic control, Horizontal ranging, Parking management system, Object proximity and presence awareness.

Application scope mainly includes 4 areas

Model Selection

The output format of this series of ranging modules is divided into six formats and two angles. Users can choose the corresponding model according to the actual application.If there are special requirements that need to modify the response time, angle, communication agreement, etc., you need to communicate with our FAE engineers during purchasing.

No.	Feature	Output Method	A21 Series Model
1	Single angle	UART AUTO	DYP-A21AYYUW-V1.0
2		UART CONTROLLED	DYP-A21AYYTW-V1.0
3		PWM PULSE WIDTH	DYP-A21AYYMW-V1.0
4		SWITCH	DYP-A21AYYGDW-V1.0
5		IIC	DYP-A21AYYCW-V1.0
6		RS485	DYP-A21AYY4W-V1.0
7		CAN	DYP-A21AYYCAW-V1.0
8	Double angle	UART AUTO	DYP-A21BYYUW-V1.0
9		UART CONTROLLED	DYP-A21BYYTW-V1.0
10		PWM PULSE WIDTH	DYP-A21BYYMW-V1.0
11		SWITCH	DYP-A21BYYGDW-V1.0
12		IIC	DYP-A21BYYCW-V1.0
13		RS485	DYP-A21BYY4W-V1.0
14		CAN	DYP-A21BYYCAW-V1.1

Matters Needing Attention

1. The company reserves the right to change this information and update the functions without notice;

2. Please pay attention to the structural tolerances when designing. Unreasonable structural design may cause transient abnormalities in module functions;

3. Please pay attention to the evaluation of electromagnetic compatibility when designing. Unreasonable system design may cause abnormal module function;

4. When the boundary application of the product limit parameter is involved, you can contact our FAE to confirm the relevant precautions.

5. The response time and same-frequency interference of this product are configured in common scenarios, and can be improved in special scenarios. You can contact our FAE to communicate with related matters.