Verification of Memory Module information, in burnt & damaged
condition in high temperature fire
1. FIELD OF THE INVENTION
To establish the data verification procedure from memory module whose end connector,
burnt/damaged in crash condition of high temperature fire for post analysis.
2. BACKGROUND OF THE INVENTION
At the time of crash an aircraft faces many environmental conditions. One of them is High
Temperature fire. After exposed to such harsh environmental condition it is very difficult to
retrieve/read back the information from memory module. This procedure is developed for verifying
information retention back from memory module, after subjected to high temperature fire condition.
3. SUMMARY OF PRESENT INVENTION
For simulating crash condition of high temperature fire, the Memory Module is exposed to 1100°C for
1 hrs. Before exposing to high temperature fire known pattern is written in Memory Module with the
help of test equipment then it is subjected to high temperature fire severities.
4. BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1: It shows the information write and read back setup.
5. DETAILED DESCRIPTION
The Memory Module (MM) consist of a printed circuit board (Flexi-Rigid PCB) assembly containing
memory array/devices and associated electronic circuitry for digital information storage. The memory
array will have solid state disks. The connection between the memory module and the associated
equipment would be achieved through the interface connector socket which could be easily plugged
into a connector on the associated equipment.
Before exposing to high temperature known pattern will be written in module and then exposed to
high temperature fire. After exposing to high temperature fire, the memory module end connector
may be there in burnt and damaged condition. It is observed here that, the end connector with flex
PCB will got fully damaged. In the event, information read out can be performed as per following
procedure:
 .All the address and data lines of all flash chips mounted on memory module is checked with
respect to each other for continuity.
 “CHIP ENABLE” pins of all flash chips should not be shorted with each other.
 Prepare and connect a standby flexi cable as per circuit diagram of flex PCB
Annexure-II
 Ensure assembly of module and read back the information with the help of Test Equipment
as shown in figure 1
 Memory Verification: First connect standby cable (101) of Memory Module (105) to
respective test equipment (102). That test equipment (102) is connected to a generic PC
(104) with a communication interface (103). Open the information read back setup on the PC
(104) and read back the information available in the Memory Module with the help of
standby cable (101). The retrieved information should match with the information which was
written before exposing the Memory Module to high temperature fire.

We Claim

1. The data retrieval setup, comprising
- a memory module capable of storing data,
- a standby cable for setting up connection,
- a specialized test equipment for validation/verification,
- a generic PC with atleast one suitable communication interface &
- a DC power supply.
2. The system according to claim 1, is capable of reading back data from memory module whose end connector burnt/damaged in condition of high temperature fire of 1100°C for 1 hr.
3. The system according to claim 1, is completely accessible and configurable as per requirement.
4. The system according to claim 1, assists in speedy recovery of stored information in recording system.
5. The system together with procedure according to claim 1, is used on existing system and on future recording systems in any areas where such operations are required.
6. The system according to claim 1, is powered by a DC supply from 5V to 28V DC with current consumption not greater than 0.5Amp but can alternatively be powered by an AC supply with suitable conversion.
7. The system according to claim 1, capable of testing for byte/page/block erase, Invalid block mapping and read/write and data retention operation for complete memory verification.
8. The system according to claim 1, holds for memory verification of atleast 384 MB capacity.