Industrial Solutions

Test engineering

Systems and solution concepts of evopro systems engineering AG

Complete test and measurement system for the quality control of an LED application in the automotive sector. While the microcontroller communicates with the system in real time and sends and logs the system-relevant information data to the corresponding application, the Intel FPGA takes over the complete image update. By additionally developed special modules, almost any number of I2C controllers can be addressed.

​Details:

  • evoledrix multi-hybrid processor unit consisting of FPGA and microcontroller
  • DUT communication via I²C and SPI, freely expandable.
  • Single channel current driver up to 6A
  • Scalable test system with driver communication via CAN
  • SRAM to buffer large amounts of data

Specification of laser and LED's. Combined heating technology, consisting of a specially developed rapid temperature control circuit with additional Peltier technology The desired ambient temperature is reached within a few 5 minutes at the component with little deviation. Subsequently, up to five DUTs can be measured and evaluated simultaneously in CW and pulsed mode. Modern measurement technologies allow all optical and thermal powers to be measured at the direct spectral point. At the same time, measuring systems measure current, voltage and temperature on the DUT itself via four-wire measurements. Interfaces for further tests are available in the system.

​Details:

  • Movable integrating sphere and thermopile for measuring multiple DUTs under the same condition
  • Accelerated and vibration-free temperature control through combined heating water circuit and Peltier technology
  • Temperature control up to 125°C ambient temperature
  • Spectrum-oriented measurement of the optical light power
  • Test system for Mid-Power Laser up to 10W
  • Different test scenarios, Continuous Wave and Pulsed 180 mm 
  • Accuracy recording points: 0,1mm
  • Center centering accuracy: 0,05mm

Measurement of digital laser diodes in the smallest space. Five DUTs can be loaded and measured simultaneously in a climatic chamber or a laser burn-in system independent of environmental influences. In addition to analog measurement data such as current, voltage, temperature, and two additional analog voltages can be measured from each DUT supply current of the IC, and the status registers in the DUT can be set, read, and evaluated via all common interfaces, such as SPI and I²C.

​Details:

  • Long-term testing of digital lasers and DUTs
  • Control via software and SCPI protocol
  • Suitable for climatic chambers (-40°C to +85°C, up to 90%RH)
  • Control of the DUTs via SPI, I²C, GPIO
  • Real-time measured value recording of all registers and voltage values
  • Security technology via Interlock

Electrical stators are visually inspected by means of a stationary camera and a robot-guided camera. After the optical visual inspection, an electrical test cycle takes place via a contacting unit. The evaluation of the tests leads, depending on the result, to an automatic output on an n.o.k. output belt.

​Details:

  • Surge voltage test up to 8kV
  • Insulation resistance test DC 6KV
  • 4x4mm DMC
  • Reading customer information
  • Cycle time 30sec
  • 98% technical availability
  • Processable min 1,66
  • Part handling up to 55kg
  • Contact unit

Supply and communication unit between the digital tray dTRAY and a software application. Two separate supply strings can each supply 30 DUTs with a variable adjustable power supply from 1.8 to 6V DC at currents up to 7.5A per DUT and measure them for their physical characteristics (Ulaser, Ilaser, NTC, Ilogic). The specially manufactured Teflon cable offers the possibility of integration in any climate chamber. Thus the behaviour of the diodes and their ageing ability can be measured even in a temperature range from -40°C to 105°C at 90% humidity. An application software evaluates each individual DUT, constantly checks its condition and stores the data in a database. Exports in all common formats can be created at will.

​​Details:

  • Long-term test of digital test objects
  • CAN Communication
  • Supply suitable for climatic chambers (-40 to +85°C, up to 90%RH)
  • Connection for up to 12 dTRAYs
  • Variable measured value recording for analysis of modern laser diodes

Testing technology for reliability during operation. In BurnIn systems such durability tests are run. It is important here to achieve the highest possible packing density, since such a test runs for several weeks without the intervention of a plant operator. Safety relevant for class 4 lasers is a 100% automation of the complete test procedure.

​Details:

  • 105 test places
  • 7,5KW output power
  • 25° - 125° Component tempering
  • Continuous POPT measurement
  • Types of regulation: ICONST, PCONST, IPULS
  • Complete control via PC application
  • Modular construction
  • Variable measured value recording for analysis of modern laser diodes

Specification and measurement of laser components with an optical light output of up to 35W. These are placed in the measuring chamber in a special rack device, which can hold up to five components, tempered and then measured according to specific customer criteria. Characteristic curve data can be stored in customer-specific protocols or databases. Retrofitting with further technical measuring methods, such as thermopile measurements or near-field recordings, is possible at any time.

​​Details:

  • Lightproof measuring chamber with integrated measuring and temperature control technology
  • Automated measurement of laser components via software
  • Component temperature control with water via external Lauda cooler
  • Plant control cabinet with integrated safety technology and measuring chamber control

The system has 4 load thrusts in which 25 laser components each can be loaded in continuous operation. The laser components are mounted on a rack with water cooling connection. The load pushes are equipped with water-cooled light sinks and measuring technology for the dissipation of the high optical light power. The load thrusts are designed in such a way that no dangerous scattered light can escape to the outside. Integrated monitoring functions guarantee a safe and controlled continuous operation of the laser components under test. The specially programmed application software controls the system and measuring devices and continuously records the measured values. A check for limit values enables safe operation of the laser component. The measured values are archived in the customer's own database.

Details:

  • Light-tight load relays with integrated measuring and temperature control technology
  • Continuous measurement of laser component values
  • Component temperature control with water via external Lauda cooler
  • Plant control cabinet with integrated safety technology and measuring chamber control
  • Endurance test of 100 35W lasers

The test system measures 24 lasers with max. 100W optical light power each at different temperature conditions. The electrical values of current, voltage and optical power are measured in ageing tests over any period of up to several thousand hours. Freely definable cycles let single places test characteristics separately to the endurance run. The data can be stored in various output formats or cloud-based solutions via any interfaces.

​​Details:

  • 24 Laser module test stations
  • Linear axis with extension arm and measuring modules
  • Innovative cold plate design for high thermal performance
  • Cooling system Test stations (with heat exchanger, pump and water filter)
  • Light protection bonnet
  • Rack with plug contact
  • 2 cooling circuits

A system that can maintain an extremely stable temperature. Especially for critical measuring processes this can be a mandatory requirement. The control of the system is taken over by a PLC. The special feature besides the high stability is the integration of the fluidics and electrics in a control cabinet.

Details:

  • 2kW tempering power
  • 0,15K stability
  • 100% CAD Design
  • Fluidics and electrics in one control cabinet
  • Application area in the gray room
  • Control via Siemens S7 and Wincflexible
Also discover our solutions in other areas of expertise.
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