Application of vehicle hydrogen sensor in hydrogen fuel cell scenario

        In the process of using hydrogen detectors, many typical problems may be encountered and their coping strategies are as follows:        1. The detector does not display or works poorly        ● The root cause of the problem: power supply problems, including poor contact of the power cord, adapter damage; Or internal circuit failure.        ● Solution: First, confirm that the power cable connection is stable, and try to replace the adapter to ensure a smooth power supply. If the power supply is fine and the device still does not respond, it may mean that there is a problem inside the circuit and you need to consult a professional technician to repair or replace the device.        2. Detector false alarm        Cause analysis: external interference, such as electromagnetic wave interference, vibration; Sensor aging/damage; Or other gases like hydrogen are present in the environment.        ● Countermeasures: Check and remove nearby sources of electromagnetic interference and vibration. Frequent false alarms indicate that the sensor may be aged or damaged and needs to be replaced in a more timely manner. At the same time, look for and reduce possible gas interference in the environment, and consider adjusting the detector sensitivity or using a more selective detector.        3. The detector does not alarm or delays the alarm        ● Cause of failure: sensitivity setting is too low; Sensors are contaminated/blocked; Hydrogen leakage is below the alarm threshold.        ● Solution steps: Review and adjust the sensitivity setting according to demand. Clean the sensor and replace it in case of serious obstruction. For small leaks, it is recommended to use precision detection tools, and consider adding detectors or optimizing the installation layout to improve monitoring efficiency.        4. Readings are unstable        ● Cause: severe fluctuation of ambient temperature and humidity; Sensor performance fluctuates.        ● Treatment: Ensure that the detector is in the recommended temperature and humidity environment, and install a protective shell or take other protective measures if necessary. If the readings are unstable due to fluctuations in sensor performance, the sensor needs to be replaced or repaired by a professional.        Summary: In order to ensure the effective operation of hydrogen detectors, regular maintenance and calibration should be performed. In the face of any fault, first according to the above guidance self-diagnosis and treatment, such as complex problems, timely recourse to professional and technical personnel for professional maintenance.

        The detection accuracy of hydrogen detectors varies with different products and models. In general, the detection accuracy of common hydrogen detectors can reach the following levels:        1. Low concentration detection accuracy: For the detection of low concentration hydrogen, the accuracy can usually reach ± (1-5) ppm. This means that when detecting low concentrations of hydrogen, the detector's reading deviates from the actual concentration of hydrogen within a range of 1 to 5ppm. For example, when the actual hydrogen concentration is 50ppm, the detector may read between 45ppm and 55ppm.        2. High concentration detection accuracy: When detecting high concentration hydrogen, the accuracy will be relatively reduced, but it can generally reach within ± (5-10) %. For example, when the actual hydrogen concentration is 10,000 PPM, the detector's reading deviation is in the range of ±500ppm to ±1000ppm.        It should be noted that the detection accuracy is also affected by environmental factors, such as temperature, humidity, pressure changes, and the presence of other interfering gases. In addition, hydrogen detectors from different manufacturers may use different working principles and sensor chips, and their detection accuracy will be different. When selecting a hydrogen detector, a detector with appropriate detection accuracy should be selected according to the specific application requirements and environmental conditions, referring to the technical specifications and performance parameters of the product. At the same time, the detector is calibrated and maintained regularly to ensure its detection accuracy and reliability.        

        Today, with the rapid development of science and technology, the field of new energy vehicles is booming with an unprecedented trend, and Vehicle  hydrogen sensors play a crucial role in this process.        With the increasing attention of the world to environmental protection and the profound understanding of the traditional energy crisis, hydrogen energy vehicles, as a new energy transportation tool with great potential, have gradually entered people's vision. As a clean and efficient energy source, hydrogen has many advantages such as only water as the combustion product and high energy density. However, as a coin has two sides, hydrogen brings many benefits at the same time, there are certain security risks. Due to the flammable and explosive characteristics of hydrogen, once a leak occurs, if it is not found in time and effective measures are taken, it is very likely to cause serious safety accidents. This makes the need for real-time monitoring of hydrogen leakage increasingly urgent, and the on-board hydrogen sensor comes into being, and its application is becoming more and more extensive.        At present, in the global car hydrogen sensor market, Japan's FIS, Riken and New Universe companies still occupy a major position. With years of technical accumulation and rich research and development experience in the field of hydrogen sensors, these companies have launched a series of excellent performance, stable and reliable on-board hydrogen sensor products. Their sensors are industry-leading in terms of accuracy, sensitivity and response time and are widely used in hydrogen vehicles from major automotive manufacturers around the world. For example, Japan's FIS hydrogen sensor has won the favor of many automobile manufacturers with its high-precision detection ability and excellent stability. Riken's products are outstanding in terms of anti-interference ability and durability, providing a strong guarantee for the safe operation of hydrogen energy vehicles. The on-board hydrogen sensor from Japan's COSMOS has achieved remarkable results in miniaturization and intelligence, making it better suited to the integration needs of modern automotive electronic systems.        However, in recent years, domestic enterprises are not outdone, and continue to make efforts in the field of vehicle hydrogen sensors. Among them, Dexil is the leader in domestic enterprises. Dexil actively invested research and development resources, and after unremitting efforts, successfully launched hydrogen related sensor products based on quantum conductivity principle based on cluster beam deposition technology. These products not only gradually approach the international advanced level in performance, but also have obvious advantages in cost control and localized services. Dexil's on-board hydrogen sensors have been applied in new energy vehicles, making important contributions to the development of the domestic hydrogen energy vehicle industry. Through close cooperation with domestic automobile manufacturers, Dexil continuously optimizes product performance and improves product quality to meet the strict requirements of the market for on-board hydrogen sensors.        The rise of domestic enterprises is not only the embodiment of China's efforts and progress in scientific and technological innovation, but also brings hope for breaking foreign technology monopoly and realizing domestic substitution. With the strong support for the domestic hydrogen energy vehicle industry and the growing market demand, more and more domestic enterprises have begun to get involved in the field of vehicle hydrogen sensors. They increase investment in research and development, introduce high-end talents, strengthen cooperation with universities and scientific research institutions, and strive to improve their technical strength. At the same time, domestic enterprises also give full play to local advantages, according to the characteristics and needs of the domestic market, to develop more targeted and adaptable products. For example, some companies have carried out bold innovations in the intelligence and networking of sensors, so that the on-board hydrogen sensor can achieve better integration and collaboration with other electronic systems of the car, providing users with more comprehensive and convenient security.        In the future, vehicle hydrogen sensor technology will continue to improve and improve. With the continuous emergence of new materials and new processes, the performance of sensors will be further improved. Vehicle hydrogen sensors with higher accuracy, stronger sensitivity and shorter response time will become the mainstream products in the market. At the same time, with the wide application of artificial intelligence, big data and other technologies, on-board hydrogen sensors will become more intelligent and automated. It can not only monitor the hydrogen leakage situation in real time, but also analyze and judge the cause of the leak, and issue warnings and suggestions to users in time. In addition, with the continuous expansion of the global hydrogen energy vehicle market, the market demand for on-board hydrogen sensors will also show explosive growth. Domestic enterprises should seize this opportunity to continuously improve their core competitiveness, actively expand domestic and foreign markets, and contribute more to the vigorous development of China's hydrogen energy automobile industry.        In short, the importance of on-board hydrogen sensors in the field of new energy vehicles is self-evident. Both foreign leading enterprises and domestic emerging forces are contributing to the safe development of hydrogen energy vehicles. Let's look forward to the continuous progress of on-board hydrogen sensor technology to create a safer and more reliable environment for the prosperous development of the new energy vehicle industry. It is believed that in the near future, with the continuous breakthrough of technology and the continuous maturity of the market, on-board hydrogen sensors will become an indispensable part of hydrogen energy vehicles, providing a solid guarantee for human green travel and sustainable development.