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A：The main differences between laser displacement sensors and laser ranging sensors are measurement accuracy, measurement distance and application scenarios:1. Laser Displacement Sensor· Measurement object: small displacement changes at close range.· Precision: high, usually up to micrometer level (μm).· Measurement distance: short, generally between tens of millimeters and hundreds of millimeters.· Application scenarios: high-precision positioning, thickness detection, profile measurement, surface profile detection, etc. in industrial automation.2. Laser Distance Sensor· Measurement object: position or distance of distant targets.· Precision: low, generally millimeter to centimeter level.· Measurement distance: long, up to tens of meters or even hundreds of meters.· Application scenarios: warehousing logistics, robot navigation, vehicle positioning, surveying and mapping, and other occasions that require long-distance distance detection.Summary and comparison:ProjectLaser displacement sensorLaser distance sensorMeasuring distanceShort (mm to cm)Long (meter level)Measuring accuracyHigh (μm level)General (mm level)Application focusPrecision measurementDistance positioningCommon applicationsWorkpiece thickness, displacement detectionAutomatic navigation, object recognitionThe choice of sensor depends mainly on whether your application requires accuracy or range.

A：The following steps should be followed to handle faults and maintenance of security door locks:1. Regular inspection: Regularly check the lock body, connecting wires and installation parts to ensure that there is no looseness, wear or corrosion.2. Troubleshooting: When an abnormality occurs, check whether the power supply, cable connection, and security control system signal are normal.3. Replace damaged parts: If mechanical wear or electrical damage is found, the corresponding parts should be replaced immediately.4. Cleaning and maintenance: Keep the door lock surface and latch area clean to avoid dust and foreign matter affecting normal operation.5. Functional test: Perform functional test after maintenance to confirm that unlocking, locking and signal interaction with the control system are normal.6. Follow the manufacturer's guidelines: Follow the maintenance instructions provided by the manufacturer to avoid unauthorized disassembly that affects safety performance.Regular maintenance and correct fault handling are the key to ensuring long-term and reliable operation of security door locks.

A：To ensure that the safety door lock is compatible with the safety control system, you need to start from the following key aspects:✅ 1. Electrical interface matchingConfirm that the operating voltage of the door lock (such as 24V DC) is consistent with the control system.Check whether the output/input signal type (PNP/NPN, normally open/normally closed, etc.) is compatible.✅ 2. Communication protocol consistencyIf the door lock uses bus communication (such as IO-Link, PROFIsafe, AS-i Safety, etc.), you need to ensure that the control system supports the corresponding protocol.✅ 3. Safety level matchingDetermine the required safety integrity level (SIL) or performance level (PL) according to the application scenario.Ensure that both the door lock and the control system meet the corresponding level (such as SIL2/PL d, SIL3/PL e).✅ 4. Certification and standard complianceCheck whether the product has passed international safety standard certification (such as ISO 13849, IEC 62061).Products certified by the same system are more compatible with each other.✅ 5. Functional testing and compatibility verificationActually access the control system and conduct functional tests such as switch linkage, fault response, and reset logic.If necessary, contact the original manufacturer's technical support for compatibility confirmation.If further customization or confirmation of the compatibility of the product combination is required, it is recommended to provide the current control system model, and we can assist in comparing the compatible door lock model.

A：Vehicle light curtains ensure reliability in all weather conditions in the following ways:1. Infrared or laser technology: Use light sources with strong anti-interference, such as infrared or laser, to reduce the impact of rain, fog, snow and other weather on detection.2. High protection level: With a high protection level (such as IP65 or IP67), it is dustproof and waterproof, and adapts to harsh outdoor environments.3. Automatic gain adjustment: The system can automatically adjust the sensitivity to adapt to different lighting conditions and climate changes to ensure stable detection.4. Heating and defogging design: Some products have built-in heating function to prevent condensation or ice on the mirror surface and ensure normal operation.5. Algorithm compensation: Combine software algorithms for error correction to improve data accuracy and reliability in bad weather.

A:Vehicle light curtains are used to classify vehicles at highway toll stations, mainly in the following ways:Multi-beam detectionLight curtains are arranged on both sides of the lane to form multiple detection areas, which can accurately detect parameters such as the number of wheels, wheelbase, and vehicle height.Real-time data analysisThe system records the time difference and occlusion pattern of the vehicle passing through each beam, and determines the vehicle length, vehicle height, number of axles, etc.Classification algorithm processingThe collected data is input into the classification algorithm and matched with the preset vehicle model standards to complete the classification of small cars, trucks, buses and other models.Linkage with the toll systemThe classification results are directly transmitted to the toll system, and the corresponding toll standards are automatically matched to improve efficiency and accuracy.This method has the advantages of non-contact, high speed, and high accuracy, and is particularly suitable for unmanned and intelligent high-speed toll environments.

A：The vehicle light curtain accurately measures the length and speed of the vehicle through precise beam scanning technology. The main principles are as follows:✅Detect vehicle length· Multiple infrared light curtain arrays span the lanes to form a dense detection area.· When a vehicle passes by, the time difference between the first and last beams of the blocked beams multiplied by the vehicle's moving speed can be used to calculate the vehicle length.· The smaller the beam spacing (such as 2.5mm/5mm), the higher the measurement accuracy.✅Detect vehicle speed· The front of the vehicle first blocks a group of beams, and the system records the first blocking time;· During the movement of the vehicle, multiple beams are blocked continuously, and the system calculates the average speed based on the time difference and distance of these blocking points;· Usually, dual light curtain distance measurement method or time difference speed measurement method is used.✅Advantages· Non-contact, non-destructive detection;· Real-time response, suitable for high-speed traffic;· Can accurately identify various types of vehicles (cars, trucks, trailers, etc.).✅Application scenarios· Widely used in highway toll stations, ETC systems, lane separation detection, intelligent transportation systems, etc.· Through high-precision measurement and fast response, vehicle light curtains can achieve accurate classification, billing and traffic statistics.

A：When choosing the resolution and measurement range of the measuring light curtain, you need to consider the following points according to the application requirements: Choose the appropriate resolution (resolution = beam spacing) Application scenario · Small object detection (≤10mm) · Ordinary object size detection · Large workpiece or rough detection  Recommended resolution (beam spacing) · 1.25mm, 2.5mm· 5mm, 10mm· 20mm or more Principle: The smaller the resolution, the higher the detection accuracy, but the price and response time may be higher. Select the appropriate measurement range Parameter · Measurement height· Detection distance (distance between the transmitter and the receiver) Description · Determined according to the maximum size of the object being measured (if the maximum height is 500mm, select 600mm or above)· Generally tens of centimeters to several meters, determined according to the on-site space Consider other factors Installation space: Ensure that the physical size of the measuring light curtain fits the equipment space. Characteristics of the measured object: If the transparent/reflective material, color depth, you may need to choose a model with higher sensitivity. Interface requirements: If analog output, serial port output, industrial protocol, etc. are required.

A：The maintenance procedures of ultrasonic sensors mainly include the following points:Regularly clean the sensor surfaceUse a clean and soft cloth to wipe the sensor probe to avoid dust, oil or water droplets affecting ultrasonic transmission and reception.Check the installation firmnessMake sure the sensor is not loose or offset to avoid detection errors caused by vibration or impact.Verify the detection performancePerform tests regularly to verify its detection distance, response time and stability to ensure that it is in the best working condition.Check the cables and connectorsCheck for wear, looseness or corrosion to ensure normal power supply and signal transmission.Avoid water accumulation or condensationIn high humidity or open air environments, the protective cover or drainage device should be checked to prevent affecting the performance of the sensor.Software or parameter checkIf using an intelligent ultrasonic sensor, the set parameters should be checked regularly to see if they are incorrect or need to be updated.The above maintenance measures can effectively extend the service life of the ultrasonic sensor and ensure its detection accuracy and system stability.

A：The installation of ultrasonic sensors must comply with the following requirements to ensure their measurement accuracy and stability:Reasonable installation positionThe sensor should be aligned vertically with the target surface to avoid large angle deviations to ensure that the sound waves are correctly reflected and returned.Avoid interferenceThere should be no obstructions in front of the sensor to avoid false triggering or reflection interference from other objects.Maintain a clean spaceAvoid installing the sensor in dust, steam, strong wind or high humidity environments, and use a protective cover if necessary.Avoid resonance interferenceDo not fix the sensor in a vibrating position to prevent affecting the propagation of sound waves.Fully consider blind spotsUltrasonic sensors have a certain minimum detection distance (blind spot). When installing, ensure that the target object is beyond this range.Correct wiring and power supplyWiring according to the instructions to ensure that parameters such as voltage and current meet the sensor requirements.Avoid mutual interference with multiple ultrasonic devicesIf multiple sensors are used side by side, they should be installed staggered or set to different working cycles.

A：Yes, ultrasonic sensors can detect transparent or smooth surfaces. Because it uses sound waves instead of light to measure, it is not affected by the transparency, color or gloss of the target object. Therefore, ultrasonic sensors can stably detect even materials that are difficult to detect with traditional photoelectric sensors, such as glass, mirrored metal, liquids, etc.This makes it ideal for applications that require the detection of transparent packaging, liquid levels or smooth workpieces.

A：In order to protect ultrasonic sensors from interference and ensure that their measurements are stable and reliable, the following measures can be taken:1. Avoid co-frequency interference· When multiple sensors work at the same time, use different working frequencies or polling trigger methods to prevent signal confusion.· Products with anti-interference algorithms or synchronization functions are preferred.2. Avoid strong noise sources· Stay away from strong noise equipment (such as pneumatic valves, high-speed motors), or add sound insulation/shock-absorbing materials.· Avoid installation directly facing high-noise reflective surfaces.3. Optimize installation position· The sensor is installed facing the target to reduce angle errors and oblique reflections.· Keep the sensor transmitting surface clean and avoid dust and water droplets.4. Avoid temperature fluctuations and airflow interference· Avoid the sensor facing strong airflow areas such as air conditioners and heaters.· Choose sensors with temperature compensation function to reduce the impact of ambient temperature on measurement accuracy.5. Electrical interference protection· Use shielded cables to ensure good grounding and avoid electromagnetic interference.· Avoid parallel wiring of sensors and high-current cables.Through the above methods, the stability and reliability of ultrasonic sensors in complex environments can be effectively improved. If there are high-interference application scenarios, industrial-grade ultrasonic sensors with enhanced anti-interference functions can be selected.

A：Compared with its competitors in the market, Dadisick's products in the field of industrial automation safety have the following advantages:✅ 1. Rich product line and comprehensive coverageDadisick provides complete safety solutions including safety light curtains, measurement light curtains, vehicle light curtains, safety carpets, safety edges, laser radars, laser displacement, ultrasonic sensors, safety relays, proximity switches, safety door locks, etc., to meet a variety of application needs from basic protection to high-precision detection.✅ 2. Stronger local supportAs a local Chinese brand, Dadisick can respond to local customer needs more quickly, provide customized services, technical support and faster after-sales response speed, and has more advantages in local deployment and reaction time than international manufacturers.✅ 3. Strong price competitivenessBased on the same functions and quality, Dadisick products are usually more competitive in price than competitors, suitable for budget-sensitive customers, and cost-effective.✅ 4. Comply with international certificationsThe products have passed a number of international certifications (such as CE, TÜV, ISO9001, IEC61496, etc.), and are also reliable in exports and large-scale engineering projects.✅ 5. Continuous R&D and innovationDadisick focuses on technology research and development, such as launching ultra-small pitch light curtains, measuring light curtains with communication interfaces, multi-functional safety edges, etc., to effectively meet the new needs of automation and intelligent manufacturing.Summary:Compared with international brands, Dadisick has obvious advantages in local response speed, price, and customization capabilities; it is also constantly improving in terms of technology maturity and brand influence. It is a high-quality choice with both cost-effectiveness and reliability in the field of industrial automation.

A：Yes, we offer comprehensive OEM services, including customized product selection and laser marking. Our team works closely with customers to understand their unique requirements and provide them with tailor-made solutions. From customizing sensor size to integrating specific functions, we have the flexibility to meet the application needs of different industrial scenarios.Welcome to contact technical support directly for help 

A：We provide installation and operating instructions, safety procedures, and training services to help your team properly install and maintain light curtains.🙋‍♂️ Need more help?Welcome to contact technical support directly for help