Communication network technology supports real-time data transmission for humanoid robots.
YXC crystal oscillators make robot communication more stable, timely, and reliable.
From August 14th to 17th, 2025, the 2025 World Humanoid Robot Games, the world's first comprehensive sports event featuring humanoid robots, was grandly held at the Beijing National Speed Skating Oval. During the Games, robots performed challenging events such as running races, football matches, and Chinese martial arts demonstrations with astonishing coordination and fluidity, a truly astonishing sight!
This series of fluid movements is made possible by the crucial role of the robot's communication system. A robot's communication system, like the human body's neural network, transmits signals to every part of the robot, enabling it to strictly follow instructions.
1. Entering the World of Humanoid Robot Communication
Imagine if a robot only had sensors and actuators but no communication system to receive sensor signals and send instructions to the actuators, the robotic arm would not function properly. The robot communication system is a key component in enabling information exchange and collaborative work. It uses information and communication technologies to enable information transmission and control between internal robot modules and between the robot and external devices and the environment. Generally speaking, the communication system of a humanoid robot can be divided into two major systems: internal communication and external communication.
Internal communication: This system typically utilizes technologies such as the CAN bus, FlexRay bus, and Industrial Ethernet to tightly connect the robot's brain with its various components, ensuring coordination and efficiency among the robot's internal modules. For example, a humanoid robot uses internal communication systems to coordinate the movement of its joints to accomplish actions like walking and grasping.
External communication: This system primarily utilizes wireless communication technologies and cloud-based interactive systems to facilitate information exchange between the robot and its controller, or between multiple robots. It serves as a bridge for the robot to interact with the world. Examples include robots executing tasks according to instructions and robots performing collaborative performances in groups.
2. Crystal Oscillator Requirements for Robot Communication
Robot communication requires extremely high real-time performance, stability, and reliability. A slight command delay or a single bit of data error can lead to loss of joint control, disrupted coordination, or even mission failure. The real-time, stability, and reliability of robot communication depend on a seemingly small but crucial component: the crystal oscillator. The crystal oscillator is a core component of the robot's communication system, and its performance directly impacts the efficiency, stability, and reliability of the robot's communication.
Crystal oscillators play a key role in robot communication systems, primarily in the following areas:
Providing a stable clock signal: Crystal oscillators generate a stable frequency signal through periodic vibration, providing a precise clock reference for robot communication modules such as Wi-Fi, Bluetooth, and 5G. Common frequencies include 40MHz, 26MHz, and 24MHz.
Ensuring low-latency, highly reliable data transmission: A crystal oscillator's phase noise and jitter control capabilities directly impact the speed and anti-interference performance of robot communication. Low-jitter, high-stability crystal oscillators reduce signal transmission latency, improve communication quality, prevent data delays or loss, and ensure stable communication even in complex environments.
Ensuring multi-node time synchronization: In robots, modules such as the main control chip, sensors, motion control, and communication systems must work together. The unified clock signal provided by a crystal oscillator ensures time synchronization between these modules, enabling precise coordination between sensor data acquisition, main control chip data reception and processing, and motion control command execution. This achieves millisecond- or even microsecond-level coordination and prevents system failures caused by timing errors.
3. YXC provides a crystal oscillator selection guide for robot communication!
Crystal oscillator characteristics required for robot communication systems include high-precision frequency stability, low phase noise and jitter, wide temperature range adaptability, miniaturization, and low power consumption.
Crystal oscillator frequency stability directly impacts the synchronization and transmission quality of communication signals, generally requiring ±10 PPM or ±20 PPM.
Crystal oscillator phase noise and jitter affect communication signal clarity and interference immunity. Low-jitter crystal oscillators can reduce signal distortion, improving communication reliability and transmission speed.
Crystal oscillators must have a wide operating temperature range, such as operating within a -40°C to +85°C temperature range. Temperature-compensated crystal oscillators can also be used to ensure frequency stability in extreme temperature environments.
Crystal oscillators in miniaturized packages enable more flexible joint designs, improving robot motion agility and responsiveness.
Robots are typically battery-powered, and low-power crystal oscillator designs can extend battery life and reduce costs.
It is recommended to prioritize surface-mount device (SMD) crystal oscillators, as they offer stronger vibration and shock resistance than traditional direct-in-place (DIP) crystal oscillators.
4. Based on the application requirements of robot communication systems, YXC Yangxing Technology recommends the following crystal oscillator models:
● High-precision passive crystal oscillator: YSX321SL series
YSX321SL series
The YSX2321SL is a high-precision, miniaturized, high-temperature-resistant, surface-mount metal-package crystal oscillator.
Ø Provides frequency stability of ±10 PPM (25°C), ensuring smooth and reliable robot communication.
Ø Utilizes the mainstream 3225 small package for high versatility.
Ø Features an industrial-grade temperature range, ensuring stable operation in harsh environments from -40°C to +85°C.
Ø The surface-mount metal package effectively reduces the impact of EMI on system performance, ensuring stable operation of the communication system.
Key Parameters:
✅ Standard Frequency: 8-64MHz
✅ Package Size: 3.2 x 2.5 x 0.7mm
✅ Load Capacitance: 10pF, 20pF, or specify
✅ Operating Temperature: -40°C to +85°C, or specify
✅ Frequency Deviation: ±10ppm, ±20ppm, or specify
● High-Precision Active Crystal Oscillator: YSO110TR Series
YSO110TR Series
The YSO110TR is a high-precision, miniaturized, high-reliability, surface-mount metal packaged crystal oscillator.
Ø Provides frequency stability of ±10ppm (at 25°C);
Ø Available in a package as small as 1612, improving space utilization and facilitating the integration of more functional modules;
Ø Excellent shock and vibration resistance, capable of stable operation in harsh environments, ensuring reliable robot communication.
Key Parameters:
✅ Standard Frequency: 1MHz~125MHz
✅ Package Size: 1.6*1.2, 2.0*1.6, 2.5*2.0, 3.2*2.5, 5.0*3.2, 7.0*5.0mm
✅ Operating Voltage: 1.8V~3.3V
✅ Operating Temperature: -40~+85°C (or specify)
✅ Frequency Deviation: ±10ppm, ±20ppm, or specify
Communication systems have very strict requirements for crystal oscillator accuracy. Frequency deviation can cause signal confusion, distortion, or even communication failure. Accuracy standards vary from ±20ppm to ±0.1ppm in different scenarios. If the robot communication system design requires very high crystal oscillator accuracy, a temperature-compensated crystal oscillator (TCXO) with temperature compensation can maintain frequency stability under different temperature conditions, ensuring stable, synchronized, and efficient transmission.
YXC Yangxing Technology recommends the following temperature-compensated crystal oscillator series:
● High-precision, high-stability temperature-compensated crystal oscillator: YSO510TP series
YSO510TP series
The YSO510TP is a high-precision, high-stability, miniaturized, surface-mount metal package crystal oscillator.
Ø Temperature stability within the -30°C to 85°C operating temperature range (typical ±2.5 PPM, minimum ±0.28 PPM);
Ø Available in packages as small as 2016 and a variety of sizes;
Ø Available in both CMOS and clipped sine wave output modes.
Key Parameters:
✅ Frequency Range: 10 - 52MHz
✅ Package Sizes: 2.0*1.6, 2.5*2.0, 3.2*2.5, 5.0*3.2, 7.0*5.0mm
✅ Output: CMOS, Clipped Sine Wave
✅ Operating Temperature: -30°C to +85°C (or specify)
✅ Frequency-to-Temperature Characteristics (Frequency Deviation): ±0.28/0.5/1.5/2.5PPM
For samples, detailed information, product details, or technical inquiries, please contact Xiao Yang directly.
