Measurement of the dynamic pressure by IEPE sensor

Hello, I work on cylinder pressure measurement in combustion engine. I have a piezoelectric pressure sensor with charge output 1 pC/psi and an inline charge amplifier 20 mV/pC
what gives overall sensitivity 20 mV/psi.
As my instrumenst are of an IEPE standard I decided to use NI9233 acquisition board. Unfortunately the output signal is far from the truth. I have checked sensor/amplifier with another acquisition device and they work correctly. I have 2 modules and both give same results. I have checked some parameters and seems that the output signal is proportional to the logarithm from the pressure differential. When I try to set the module configuration in MAX there is no pressure measurement available however there is force and acceleration.
Is it possible to use this module for pressure measurement? Somebody experienced similar problems?
Regards,
Przemek

Here are the parameters: Sensor Maker: Dytran, type: 2200C5
Charge amplifier Maker: Dytran, Type: 4705M5, charge amplifier is of an IEPE standard.
I have attached their specification cards too.
In the file signals.jpg you can find my calibration experiment record. I was applying step-like pressure (blue line) to simulate rapid pressure increase. the value was 120 bar. I was expecting that the answer signal will be a pulse proportional to the step pressure. I have noticed that the answer depends from how fast the pressure increase, that means from the derivative of the pressure signal. I will attach one more file where you can see that it is proportional to the logarithm from that derivative.
Honestly I do not understand it at all now.
Attachments:
4705M5.pdf ‏91 KB
sensor 2200C.pdf ‏24 KB
signals.jpg ‏96 KB

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Attachments:
Physical Chan.gif ‏3 KB

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TYPES: BEGIN OF ty_xml,
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DATA: lv_file_name TYPE                   rlgrap-filename,
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        lit_return   TYPE STANDARD TABLE OF bapiret2,
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        lv_count     TYPE                   i.
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      has_field_separator = ' '
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Narendra

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END LOOP;
v_exec := 'SELECT ''x'' FROM DUAL WHERE '||v_cond;
Add_Log('Event_Validating',v_user,v_event_validated,'INFO',v_exec);
EXECUTE IMMEDIATE v_exec;
/* Exception raised from here
E-0008: Unkown Exception raised in Loop. ORACLE:ORA-00904: "V_REC"."ATT2_FROM": invalid identifier
It seems that Oracle does not understand the dynamic reference v_rec.ATT2_FROM, v_rec.ATT2,... to test the condtion
IF SQL%ROWCOUNT = 0     THEN -- condition is false ==> traced attributes does not changed
-- update the REASON = 4 - not interested event
v_exec := 'UPDATE CONTRACT_VALIDATED SET REASON = 4 WHERE CO_ID = '||pk_val||' AND VALID_T = '||tk_val;
EXECUTE IMMEDIATE v_exec;
END IF;
FETCH v_rec_cv INTO v_rec;
EXIT WHEN v_rec_cv%NOTFOUND;
END LOOP;
EXCEPTION
WHEN OTHERS THEN
Add_Log('SCD_VALIDATION',v_user,v_event_validated,'ERROR','E-0008: Unkown Exception raised in Loop. ORACLE:'||SQLERRM);
RAISE ge_raise_error;
END;
END IF;
CLOSE v_rec_cv;
EXCEPTION
WHEN OTHERS THEN
Add_Log('SCD_VALIDATION',v_user,v_event_validated,'ERROR','E-0008: Unkown Exception raised in Loop. ORACLE:'||SQLERRM);
RAISE ge_raise_error;
END;

Dear Andrew,
Thank you so much for your suggestions, however, I think it will be better to let me explain more about the situation.
I am working at Data Warehousing and Analysis part. The event tables are provided by other applications such as Customer OTLP system, Sales Management, etc. We therefore just have the results stored in the event tables (which could be wrong or inconsistency) and no way to force them to be valid by constraints. Before further processing the events , their records should be checked and overridden if possible, and that is the point I am trying to solve now.
The Event table names, their attributes list, data types, primary key, timestamp columns etc are dynamic and are provided via parameters. I would like to write a procedure which can check the invalid events (not only update, but also insert, delete), protocol them, and override them if possible before processing further. Because the table name, attribute lists, data type, etc are not known in advanced, to my best knowledge, the only choice is generating dynamic PL/SQL code although it could suck the performance. The code you have seen in my first question is the output from the follwoing procedure, where the i_att_list provides the atts list has been parsed from other procedure invocation, i_pk is the primary key, i_tk is the time key, i_table_name is the table name (which is Event_Validation in previous example). The stucking point I have met now is that I do not know how to test the condition to detect the different between column pairs (ATT1 and ATT1_FROM, ...). Using Select from dual is just a dummy select for testing the where condition which must be formed as a string by that way.
Thank you very much for your answer and looking forward to seeing your further recommendations or suggestions.
Regards,
Tho.
CREATE OR REPLACE PROCEDURE Update_Validation
( i_att_list enum_string, -- list of attributes
i_pk IN VARCHAR2, -- primary key column
i_tk IN VARCHAR2, -- time key column
i_table_name IN VARCHAR2 -- table_name - the columns format be checked
) AUTHID Current_User IS
TYPE LoopCurType           IS REF CURSOR;
ln_parallel NUMBER := 4;
ge_raise_error EXCEPTION;
v_user VARCHAR2(100);
v_sql VARCHAR2(4000);
v_string VARCHAR2(4000);
v_crlf VARCHAR2(2) := CHR(13)||CHR(10);
BEGIN
SELECT sys_context('USERENV','current_schema') INTO v_user FROM DUAL;
v_sql:= 'SELECT /*+ parallel(x,'||ln_parallel||') */ x.* FROM ' ||i_table_name|| ' x '||
          'WHERE CHANGE_KEY = ''U'''||
' order by '||i_tk;
v_string := 'DECLARE v_rec '||i_table_name||'%ROWTYPE;' ||v_crlf||
          ' TYPE cv_type IS REF CURSOR; ' ||v_crlf||
' v_rec_cv CV_TYPE; ' ||v_crlf||
          ' v_cond VARCHAR2(4000); ' ||v_crlf||
     ' v_exec VARCHAR2(100);' ||v_crlf||
          ' v_default VARCHAR2(10):= ''~~''; ' ||v_crlf||
' tk_val '||i_table_name||'.'||i_tk||'.%TYPE;'||v_crlf||
' pk_val '||i_table_name||'.'||i_pk||'.%TYPE;'||v_crlf||
          ' v_cnt NUMBER;' ||v_crlf||
          'BEGIN ' ||v_crlf||
                    'OPEN v_rec_cv FOR ' ||v_sql ||';' ||v_crlf||
                    'FETCH v_rec_cv INTO v_rec;' ||v_crlf||
                         ' IF v_rec_cv%NOTFOUND THEN ' ||v_crlf||
                              'Add_Log(''Event_Validating'',v_user,i_table_name,''INFO'',''I-0001: No-Procession needed'');'||v_crlf||
                         ' ELSE ' ||v_crlf||
                              ' BEGIN '||v_crlf||
                              ' LOOP '||v_crlf||
                              'pk_val := v_rec.'||i_pk||';'||v_crlf||
'tk_val := v_rec.'||i_tk||';'||v_crlf||
'v_cnt := i_att_list.COUNT;' ||v_crlf||
                                        'v_cond := ''NVL(v_rec.''|| i_att_list(1)||'', '' || v_default || '') <> NVL(v_rec.'' || i_att_list(1)||''_FROM'''||v_crlf||
                         '||'' , '' || v_default || '')'';'||v_crlf||
                                        'FOR v_i IN 2..v_cnt LOOP'||v_crlf||
                                             'BEGIN'||v_crlf||
                                             'v_cond := v_cond ||CHR(13)||CHR(10)||''OR NVL(v_rec.''||i_att_list(v_i)||''), <> NVL(v_rec.''||i_att_list(v_i)||''_FROM'''||v_crlf||
                                             '||'' , '' || v_default || '')'';'||v_crlf||
                                             'END;'||v_crlf||
                                        'END LOOP;'||v_crlf||
                                        'v_exec := ''SELECT ''x'' FROM DUAL WHERE ''||v_cond;'||v_crlf||
                                        'EXECUTE IMMEDIATE v_exec;'||v_crlf||
                                        'IF SQL%ROWCOUNT = 0     THEN -- condition is false ==> traced attributes does not changed'||v_crlf||
                                        '-- update the REASON = 4 - not interested event'||v_crlf||
                                        'UPDATE '||i_table_name||' SET REASON = 4 WHERE '||i_pk||' = '||v_tk||' AND '||i_tk||' = '||tk_val||';'||v_crlf||
                                        'END IF;'||v_crlf||
                                   'FETCH v_rec_cv INTO v_rec;' ||v_crlf||
                                   'EXIT WHEN v_rec_cv%NOTFOUND;'||v_crlf||
                    ' END LOOP;'||v_crlf||
                              'EXCEPTION' ||v_crlf||
                         'WHEN OTHERS THEN'||v_crlf||
                    'Add_Log(''SCD_VALIDATION'',v_user,i_table_name,''ERROR'',''E-0008: Unkown Exception raised in Loop. ORACLE:''||SQLERRM);'||v_crlf||
                    'RAISE ge_raise_error;'||v_crlf||
                              'END;'||v_crlf||
                              'END IF;'|| v_crlf||
                    'Close v_rec_cv;'||v_crlf||
                    'EXCEPTION' ||v_crlf||
               'WHEN OTHERS THEN'||v_crlf||
          'Add_Log(''SCD_VALIDATION'',v_user,i_table_name,''ERROR'',''E-0008: Unkown Exception raised in Loop. ORACLE:''||SQLERRM);'||v_crlf||
          'RAISE ge_raise_error;'||v_crlf||
               'END;';
     Add_Log('SCD_UPDATE_VALIDATION',v_user,i_table_name,'INFO','I-0006: Update Validation : '||v_string);
     EXECUTE IMMEDIATE v_string;
EXCEPTION
WHEN OTHERS THEN
Add_Log('SCD_VALIDATION',v_user,i_table_name,'ERROR','E-0008: Unkown Exception raised in Loop. ORACLE:'||SQLERRM);
END Update_Validation;

Can we catch the dynamic item value in Apex?

Hi All,
In my application i am using SELECT_LIST_FROM_QUERY_XL Function. The select list will be populated based on some product group id.
Some times the list will be 2 or 5 based on prgr id. Now how to catch the dynamic list item name. Is it possible?
Thanks,
Anoo..

Not directly. You can have two items and then dynamically switch between those two items. This can lead to other issues of cause. For example if the item value should be stored in the database, you have to decide which item to store and how to do that.
The field type itself should not be changed. There are a lot of other things that depend on that. Possible ? Yes. Advisable? No. Check the page source text to see the difference between a select item and a normal text field. Then think if you want to set all this dynamically.
Maybe a popup list would be better suited?
One more point: In my experience adding too many dynamic stuff onto a page will not improve the user experience, but will decrease it. So you should carefully consider if this is something. Dynamic actions are great, but they are not always the best tool for the job.

I only see the image outline sometimes instead of the "dynamic graphics preview"?

I'm sure everyone who uses InDesign for any amount of time is aware of something I just recently found out is called the "dynamic graphics preview." [See Fig. 2, below]
The dynamic graphics preview is the whole image you temporarily see when your trying to crop, or position an image within a frame. It's the part of the image that falls outside of the frame. The parts of the image that fall outside of the image are temporarily "seen" transparently (faded), to indicate that those areas are not within the viewable area of the frame. You usually see this when you are trying to crop the image with the direct selection tool, after you click and hold on the image for a few seconds with the direct selection tool. The temporary transparent preview goes away once you decide on the position and let go of the mouse click.
So my issue is: when I click and hold, on certain images with the direct selection tool (white arrow) the dynamic graphics preview doesn't show up? All I see is the outline of the path of the image, with NO PREVIEW, or the outline of the shape (usually a rectangle), with NO PREVIEW.
For instance there was this one situation at work (where I work on catalogs) where the same image was copied six times, in order to make swatches, and when I clicked and held on those particular images the dynamic graphics preview would show, but not on the other images, even though they're the same image!? Meaning, the same exact image file, just copied six times.
So why can I see the temporary transparent preview for certain instances of the same image but not for others?
Has anyone else ever experienced this?
Again any answers are completely appreciated.
Fig. 1
Fig. 2

Peter Spier wrote:
The first question would be does it work if you try again and wait a bit longer before moving the mouse?
Next, does it happen in more than this file?
Does it continue to happen if you restart the computer?
Does it happen if you use a ne user account?
– Nope. Tried that.
– It happens in other files as well. The situation is similar also, where one copy of the same file will show the dynamic graphic preview but the other copies will not.
– Yes, even after restart, it persists. It occured again today in fact.
– Yes. Even after I login in with a different account, I get the same issue. Others in my office have had the same issue. Can it be server related? Or permisions related? I don't see how that can be when it's the same exact file, and on one copy it works but on the others it doesn't.
..Makes no sense at all.
By the way this is all happening on CS 5.5 - version 7.5.2 [Fig. 3].
NOTE: The images above [Fig. 1-2] show CS 3 screen shots because they were made from my computer at home, which as far as I know don't have the same problem with the dynamic graphics preview (DGP). Those images are only there to help illustrate what the DGP is. All the issues with the DGP are occuring in CS 5.5.
Fig. 3

How do I set two different beat measures in the same project, e.g. 2/4 and 3/4?

How do I set two different beat measures in the same project, e.g. 2/4 and 3/4?

mpcsouza wrote:
How do I set two different beat measures in the same project, e.g. 2/4 and 3/4?
you can't, GB is restricted to a single time signature per project
however, the time sig is really more cosmetic, it doesn't affect the way the project plays back, so you could set the project to 2/4 when working on the 2/4 parts, and 3/4 when working on the 3/4 parts

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