Engineers working on industrial video monitoring retrofits often run into these headaches:
1. Mines and cable production lines need to record depth / length data — traditional solutions require a PLC + acquisition module + a separate OSD overlay unit, three separate hardware systems with messy wiring and long development cycles;
2. In server rooms and energy storage facilities, temperature, humidity, voltage, and current data cannot be synced with the surveillance footage, leaving no visual evidence for later traceability;
3. Production-line part counting and flow statistics cannot be tied to the monitoring video, so quality issues cannot be cross-checked against output data;
4. Ordinary character overlay units on the market only display text — they have no measurement or acquisition functions, so new projects force you to rebuild the whole system.
Today we share the QL-X930H video graphic OSD overlay module, purpose-built for industrial monitoring scenarios. One module replaces multiple devices, requires no programming, and works with the vast majority of existing AHD/CVBS analog HD surveillance systems — dramatically cutting retrofit hardware and labor costs.
1. Basic Compatibility
The QL-X930H is an industrial-grade OSD character overlay module compatible with 720P/1080P AHD and CVBS standard-definition video signals. It auto-adapts to the camera’s picture parameters on connection — no video reconfiguration needed before use.
Module size: 65×45×1.6 mm, with three mounting options (through-hole, SMD, screw terminal) for easy integration into embedded devices and surveillance enclosures. Dual power options: direct 5V DC, or 5.5–26V wide-range input to suit industrial and data-center power environments.
2. Core Features for Full Industrial Monitoring Coverage
2.1 Incremental Encoder Length/Depth/Height Measurement with Power-Loss Memory
The onboard dedicated encoder interface connects directly to incremental rotary encoders for:
· Mine shaft depth, pit water level, and tunnel height measurement;
· Cable, textile, and production-line length metering; supports custom decimal places (0–3) and custom length units, with both hardware/software zero-reset and automatic power-loss count saving — no need to reset every boot.
2.2 Multi-Channel Counting + Analog Acquisition for Production Lines and Server Rooms
· Counting: compatible with active/passive photoelectric, Hall, and proximity switches for one-way/two-way part counting and flow statistics;
· Dual 12-bit ADC analog inputs: measure 0–3.3V voltage, or connect 4–20mA / 0–20mA sensor signals for data acquisition and on-screen overlay. (Note: this feature is provided free by the manufacturer; damage caused by incorrect wiring or over-voltage is not covered by warranty.);
· MODBUS-RTU RS485 bus: daisy-chain up to 3 RS485 sensors/transmitters on one bus to collect multiple environmental data points and overlay them on the live picture.
2.3 21 Built-in Measurement Graphics with Visual Alignment Calibration
Unlike plain text overlay units, the X930H includes 21 ruler graphics — straight lines, crosshair scales, circles, rectangles, and more. Up to 20 custom graphics can be overlaid simultaneously, with move, zoom, and power-on auto-load. Ideal for equipment alignment, dimensional calibration, and point marking, plus a communication protocol for crosshair move/clear/save.
2.4 Zero-Code Setup with Free PC Software
The manufacturer provides a free PC configuration tool — no user programming required. Configure the parameters in the vendor software and the module is ready to deploy.
Engineers with mine monitoring, production-line retrofit, or server-room projects can request the full datasheet, wiring diagrams, and PC software installer directly. Sample testing and batch custom development are supported.
If you have any questions about this topic, feel free to contact us at [email protected]
Have questions about this article? Feel free to contact us at [email protected] — we’re happy to help!
