Shenzhen Hengyi Technology Co., Ltd.

Tank Level Monitoring SolutionTank Level MonitoringIndustry Pain PointsIn industries reliant on tank storage—such as petroleum, chemical, food and beverage, environmental protection, and agriculture—the tank level monitoring process has long faced multiple challenges that severely constrain safety and operational efficiency:Safety vs. Efficiency Conflict:​ Manual inspections require close contact with storage tanks. Especially for tanks containing hazardous media such as corrosive acids, volatile solvents, and liquefied gases, this approach poses significant risks of leaks, poisoning, and explosions. Moreover, manual recording is low-frequency (e.g., once or twice daily), making it impossible to capture sudden level fluctuations in real time. The result is low efficiency and severe data latency.Poor Adaptability of Traditional Wired Solutions:​ In scenarios involving retrofitting older tanks or monitoring dispersed outdoor tanks, wired monitoring systems demand extensive cabling. This not only drives up installation costs (exceeding tens of thousands of RMB per kilometer) and extends project timelines, but also makes the system prone to line faults caused by rain and corrosion over time—dramatically increasing maintenance difficulty and ongoing costs.Insufficient Data Accuracy and Regulatory Compliance:​ Some basic monitoring devices (such as float-type or ultrasonic sensors) suffer from measurement errors exceeding 10 mm and lack historical data logging capabilities. This not only leads to media leaks from overfilling or production disruptions from empty tanks, but also makes it difficult to meet the mandatory national work safety regulations requiring "real-time monitoring and traceable data."RequirementsStorage tanks are typically used to hold liquid or gaseous materials and can be categorized by material into metal tanks and non-metal tanks. Metal tanks are mostly made of carbon steel or stainless steel, offering high pressure resistance and durability; non-metal tanks, constructed from materials such as fiberglass-reinforced plastic (FRP) or polyethylene, are suitable for storing certain corrosive materials.Level measurement and point-level detection for these tanks are critical to ensuring safe, efficient, and continuous operation. Whether storing corrosive acids, volatile solvents, or critical raw materials, reliable measuring instruments prevent overfilling, ensure accurate inventory, and satisfy safety regulation requirements. Our company has developed a wireless level monitoring system tailored to these storage tanks.II. System Functions and Product Introduction2.1 System FunctionsOur company has developed a wireless monitoring system for liquid level and point-level detection applicable to various types of storage tanks. This system consists of front-end sensors, wireless transmission modules, a local display terminal, and a management platform.The front-end sensors utilize 80 GHz millimeter-wave radar technology for level and distance measurement, and transmit data wirelessly. These sensors support multiple installation methods, making them convenient and easy to use.The system's wireless communication supports LoRa/LoRaWAN, Wi-Fi, and Cat 1 (4G). LoRa/LoRaWAN is suitable for monitoring a cluster of tanks within a concentrated area. Wi-Fi is ideal for locations that already have existing Wi-Fi coverage. Cat 1 (4G) is designed for scenarios where tanks are widely dispersed, with only a small number of tanks at each remote location.The local display terminal is used for the unified management and visual display of liquid levels across multiple tanks in a centralized manner. It is installed at the entrance of the storage area, allowing management personnel to easily view the status on-site.The management platform provides unified management, display, data storage, and alarm functions for the liquid and point levels of the tanks. Its block diagram is shown below:2.2 Product Introduction2.2.1 Wireless Millimeter-Wave Level Meter• FeaturesThe radar level meter series offers a maximum measuring range of up to 15 m, with a blind zone kept within 14 cm. Thanks to its higher operating frequency and wider bandwidth, it delivers higher measurement accuracy for media such as liquids, slurries, and solids.The product features bracket-mounted installation, requiring no on-site wiring and making the setup quick and easy.• ImageProduct ParametersItemParameters / SpecsRemarksTransmission Frequency79 GHz ~ 81 GHzMeasurement Range0.14 m ~ 15 mMeasurement Accuracy±5 mmResolution1 mmFOV (Field of View)Horizontal 25°, Vertical 15°Transmission Power / Tx Power12 dBmResponse Time200 msCommunication MethodRS485, LoRa/LoRaWAN, Cat1 (4G), 4–20 mA OutputDefault: RS485Alarm Output1 Relay Output / One-channel Relay OutputMounting MethodBracket / ScrewPower Supply12–24 VDC2.2.2 Display Terminal • Product FunctionsThe Display Terminal provides unified management for multiple sensor channels. It can simultaneously display multip

Smart Shelf Safety Monitoring System SolutionPrevent Shelf Collapse, Ensure Personnel and Cargo Safety Structural Stability Monitoring: Shelf tilting may result from foundation settlement, overloading, forklift collisions, or long-term uneven stress. If not addressed promptly, it may lead to collapse accidents.Early Warning: Slight tilting is hard to detect with the naked eye, but through tilt sensors or regular inspections, potential hazards can be identified in advance to avoid catastrophic consequences.Avoid Cargo Sliding or Damage Center of Gravity Balance: Shelf tilting causes cargo center of gravity to shift, especially for high-level shelves or heavy goods, which can easily lead to sliding or tipping, causing cargo damage or even personnel injury.Special Cargo Protection: Precision instruments, fragile items (e.g., glass, electronics) have higher requirements for shelf levelness; even slight tilting may cause packaging damage or product breakage.Adapt to Automated Warehouse Systems (e.g., AGV/Stacker Crane) Precise Positioning Requirement: Automated warehouses rely on standard shelf arrangement; if tilting exceeds the allowable range (e.g., ±0.5°), it may cause stacker crane picking failures or collisions.System Linkage: Real-time tilt data can be fed back to the Warehouse Management System (WMS) to automatically adjust robot paths or pause operations in hazardous areas.Comply with Safety Regulations and Industry Standards Legal Requirements: Regulations such as OSHA (Occupational Safety and Health Administration, USA) and GB/T Code for the Use of Storage Shelves require regular inspection of shelf structures; if tilt exceeds limits, shelves must be taken out of service for repair.Insurance and Liability: Some insurers require enterprises to install tilt monitoring devices; otherwise, claims may be denied after an accident.Reduce Maintenance Costs, Extend Shelf Lifespan Preventive Maintenance: By monitoring tilt changes, determine whether to reinforce footings, adjust beams, or replace damaged components — preventing minor issues from escalating into major repairs.Reduce Downtime Loss: Sudden collapse can halt warehouse operations; regular inspections maximize operational continuity.Total Function of SystemTilt detection requires a complete system to ensure data usability. Our company has developed a full set of tilt monitoring system, which consists of front-end sensor inclinometers, wireless transmission, alarm terminals, mobile apps, and cloud platforms. Below, we will introduce wireless transmission, alarm terminals, cloud platforms, and tilt sensors respectively. The following is the block diagram of this system:The overall system is used as follows: An inclinometer is installed on each shelf and can be powered by battery or continuous power supply. Transmission options include LoRa, LoRaWAN, or Wi-Fi. A display terminal is placed in front of each group of shelves to show the tilt level of that particular shelf group.Immediate Alert at 0.1° Shelf Tilt!​Triaxial Inclinometer | 24/7 Monitoring | Anti-Collapse· Real-Time Monitoring · Intelligent Alarm · Multi-Protocol Transmission · Wireless TransmissionThis system employs three types of wireless transmission: LoRa/LoRaWAN, Wi-Fi, and CAT1 (4G). Each is tailored to a specific usage environment.LoRa/LoRaWAN​ is suited for large-scale localized environments with high demands on sensor power efficiency, long transmission range, and centralized management — such as logistics warehouse shelving systems.Wi-Fi​ is appropriate for environments where sensor power consumption is not critical and Wi-Fi coverage is available.CAT1 (4G)​ is designed for widely dispersed, large-scale environments — such as telecommunication towers or structurally unsafe buildings.FeatureLoRa/LoRaWANWiFiCat1 (4G)Transmission Range10–15 km (open area)50–100 m (open area)Dependent on 4G base station coverageData Rate0.3–50 kbps11 Mbps – 9.6 GbpsUplink 10 Mbps / Downlink 5 MbpsPower ConsumptionExtremely low (5–10 years battery life)High (requires continuous power)Medium-low (supports battery power)Frequency Band470–510 MHz (China)2.4 GHz / 5 GHz / 6 GHzGlobal LTE bands (e.g., B1/B3)Network ArchitectureStar topology (Terminal → Gateway → Cloud)Point-to-point / AP-centricCellular network (Base Station → Core Network)Typical ScenariosLogistics shelving, Agricultural monitoringIndoor devices, Smart homeTower monitoring, Dangerous building inspectionAdvantagesUltra-long range, Low power, Anti-interferenceHigh speed, High-density connectivityWide coverage, Strong mobilityLimitationsLow data rate, Dependent on gateway deploymentHigh power consumption, Wall penetration lossSignal dependent on base stations, Higher costCloud PlatformCore FunctionsMulti-Protocol Device AccessSupports tilt sensors接入 via multiple communication protocols including Wi-Fi, LoRa/LoRaWAN, and Cat1Automatically identifies device type and communication protocolProvides standardized device access interfacesReal-Time Dat

Wireless Temperature Monitoring TerminalI. FunctionsOur company has developed a wireless temperature monitoring terminal. It supports both wired and wireless reception of data from sensors measuring temperature, humidity, air quality, and more. The terminal not only stores received data locally but also uploads it to cloud platforms via Ethernet or 4G/5G networks.II. Product Specifications2.1 System FeaturesThe terminal is embedded with a high-speed CPU operating at up to 1.2 GHz, equipped with 128 MB of RAM and 4 GB of external eMMC storage. Its large storage capacity allows it to retain data from multiple sensors for over 10 years. The high-performance CPU enables in-depth analysis of long-term sensor data. Additionally, the device features an external 10.1-inch touchscreen for intuitive operation.The terminal offers versatile interfaces. Internally, it supports wireless protocols (LoRa/LoRaWAN), wired RS485, and I/O connections, allowing integration with various sensors to form a compact system. Externally, it supports 4G/5G and RJ45 connectivity for uploading sensor data to cloud platforms. It can also interface with external control equipment through I/O linkages. The following illustrates some system configurations utilizing this terminal.Wireless Temperature Monitoring Terminal Wireless Temperature Monitoring SystemInfrared Temperature Measurement System2.2 Product Introduction• Product FunctionsThe wireless temperature monitoring terminal provides unified management for multiple sensor channels. It displays real-time data from multiple sensors simultaneously on-screen and handles data logging, transmission, and analysis. The terminal can interface with external control equipment—such as sprinkler systems, fans, and humidifiers—via I/O and RS485 linkages to trigger automated responses.• Product Images• Product ParametersItemParameterRemarksDisplay Functions​Display Type​TFT True ColorDisplay Resolution​1024 × 600Touch Type​High-Precision Capacitive Touch ScreenNumber of Sensors Displayed​Supports multiple display styles: full-screen single view, dual-view, up to 16 sensors simultaneouslyDisplay Size​10.1 inchesSystem Functions​Real-time Data​Displays real-time sensor data on screen via multiple visualization modesHistorical Data​Stores over one year of historical data; easily accessible and viewable via touch screenOperation Method​Direct finger operation on screen; supports zoom in/outSupported Sensor Types​Temperature & Humidity, Temperature, PM2.5/PM10, TVOC, Formaldehyde, CO₂, etc.Data Upload​10/100M Ethernet and 3G/4G/5GCommunication Protocol​Local: LoRa, LoRaWAN for sensor integrationRemote: MQTT for cloud platform integrationLocal Wireless​Supports LoRa wireless communication; Frequency Band: 31 MHz ~ 915 MHzProduct Specifications​Operating Temperature​-30℃ ~ 65℃Operating Humidity​5% RH ~ 90% RHCertifications​CE / FCCPower Supply​6V ~ 12V III. Application ScenariosLeveraging the core strengths of the wireless temperature monitoring terminal—including multi-sensor compatibility, wide-temperature operation, long-term data storage, remote management, and intelligent linkage—its applications span industrial, warehousing, environmental, agricultural, public infrastructure, medical, and other sectors. Specific scenarios include:3.1 Industrial Sector: Electrical Equipment & Production Environment MonitoringCore Scenarios:​ Temperature monitoring in high/low-voltage electrical cabinets, environmental monitoring in industrial workshops, and temperature monitoring of production equipment.Rationale:Supports LoRa wireless communication (eliminating the need for wiring, ideal for complex industrial layouts) and integrates with single-point/matrix infrared temperature sensors (as described in the "Infrared Temperature Measurement System" section) to monitor critical points such as contacts in electrical cabinets and motor windings in real time, preventing overheating failures;Operates reliably within a wide temperature range of -30℃ to 65℃, withstanding extreme industrial conditions;Capable of linking with cooling fans or sprinkler systems to automatically activate cooling when temperatures exceed set thresholds, ensuring equipment safety;Stores data for over 10 years, enabling traceability of temperature trends to support predictive maintenance.3.2 Warehousing & Logistics: Cold Chain & Hazardous Chemical Storage MonitoringCore Scenarios:​ Food cold chain storage (e.g., fresh produce, frozen foods), pharmaceutical cold chain (e.g., vaccines, reagents), and hazardous chemical warehouses (e.g., temperature and humidity monitoring of flammable materials).Rationale:Supports temperature and humidity sensors for real-time environmental monitoring, with data stored locally and uploaded to the cloud, meeting cold chain "full traceability" requirements (e.g., fulfilling GSP certification mandates for temperature logging in pharmaceuticals);The 10.1-inch touchscreen facilitates on-site checks by warehouse personnel,

Smart Shelf Safety Inspection SolutionIndustry LandscapeIn logistics facilities, shelving units are typically tall, densely packed with heavy inventory, and require year-round real-time tilt monitoring to achieve the following objectives:Prevent Shelf Collapse and Ensure Personnel and Cargo SafetyStructural Stability Monitoring: Shelf tilting can result from foundation settlement, overloading, forklift collisions, or long-term uneven stress distribution. If left unaddressed, this may lead to catastrophic collapse.Early Warning: Minor tilts are often imperceptible to the naked eye; however, utilizing tilt sensors or regular inspections enables early detection of potential hazards, preventing disastrous outcomes.Prevent Cargo Sliding or DamageCenter-of-Gravity Balance: Tilted shelves cause cargo to shift off-center—particularly on high-level racks or with heavy loads—significantly increasing the risk of sliding, toppling, cargo damage, and even personnel injury.Specialized Cargo Protection: Precision instruments and fragile goods (e.g., glass, electronics) demand higher shelf levelness; even slight tilting can result in packaging damage or product defects.Compatibility with Automated Storage Systems (e.g., AGVs/Stacker Cranes)Precision Positioning Requirements: Automated warehouses rely on standardized rack alignment. If tilt exceeds permissible limits (e.g., ±0.5°), stacker cranes may fail to retrieve goods or risk collision.System Integration: Real-time tilt data can be fed back to the Warehouse Management System (WMS) to automatically adjust robotic pathways or suspend operations in hazardous zones.Compliance with Safety Regulations and Industry StandardsLegal Requirements: Standards such as OSHA (Occupational Safety and Health Administration) and GB/T Code for Use of Storage Shelves mandate regular structural inspections; racks exceeding tilt thresholds must be taken offline for repair.Insurance and Liability: Some insurers require the installation of tilt monitoring devices; otherwise, claims may be denied following an incident.Reduce Maintenance Costs and Extend Rack LifespanPreventive Maintenance: Monitoring tilt variations helps determine the need for footing reinforcement, beam adjustment, or replacement of damaged components, preventing minor issues from escalating into major repairs.Minimize Downtime Losses: Sudden collapses can halt warehouse operations, whereas routine inspections maximize operational continuity. Shelf tilt monitoring is a low-cost, high-return safety measure in logistics warehouse management, and it is particularly critical for high-bay racks, automated warehouses, or high-frequency operational environments. Leveraging IoT technology, our company has developed an unmanned shelf tilt monitoring system that significantly reduces accident risks and ensures the stable operation of storage systems through continuous IoT-based inspection.Tilt Monitoring SystemOverall System FunctionTilt detection requires a complete system to ensure the usability of the data. Our company has developed a full-fledged tilt monitoring system comprising front-end tilt sensors, wireless transmission modules, alarm terminals, a mobile app, and a cloud platform. The following sections will introduce the wireless transmission modules, alarm terminals, cloud platform, and tilt sensors respectively. Below is the system architecture diagram.The entire system operates as follows: One tilt sensor is installed on each shelf, powered either by battery or via constant power supply. Data transmission supports LoRa, LoRaWAN, or Wi-Fi. A display terminal is placed at the front of each rack group to visually indicate the tilt status of that specific group.2.2 Wireless TransmissionThis system employs three wireless transmission technologies: LoRa/LoRaWAN, Wi-Fi, and Cat1 (4G). Each is tailored to distinct deployment scenarios. LoRa/LoRaWAN is suited for large-scale localized environments—such as logistics shelving—where sensors require low power consumption, long-range transmission, and centralized management. Wi-Fi is ideal for settings with existing Wi-Fi coverage and no stringent power constraints. Cat1 (4G) targets highly dispersed, expansive environments, such as communication towers or structurally compromised buildings. These three wireless technologies are briefly introduced below.CharacteristicLoRa/LoRaWANWi-FiCat.1 (4G)Transmission Distance10-15km (open area)50-100m (indoor)Depends on 4G base station coverageTransmission Rate0.3-50kbps11Mbps-9.6GbpsDownlink 10Mbps / Uplink 5MbpsPower ConsumptionExtremely low (5-10 years battery life)High (requires continuous power)Medium-low (supports battery power)Frequency Band470-510MHz (China)2.4GHz/5GHz/6GHzLTE global bands (e.g., B1/B3)Network ArchitectureStar (terminal → gateway → cloud)Point-to-point/AP centralized蜂窝网络 (base station → core network)Typical ScenariosLogistics racks, agriculture monitoringIndoor devices, smart homeTower monitoring, dangerous building monito