Smart Water and Heat Meter ICT/FCT Test System
1. Equipment pictures
Adopt 6001 standard cabinet form.
2. Device function description
The device has synchronous test function of ICT and FCT. The FCT test can also be performed on its own. First perform the ICT test. When the ICT test is correct, place the board on the FCT, and simultaneously place the ICT position on the board under test. After the needle bed is pressed down, the ICT and FCT can be tested in parallel. The position of the FCT can be tested in parallel with multiple impositions, which greatly reduces the test time.
ICT test content includes:
1. Open and short circuit test;
2. Resistance test: test range: 200~27M;
3. Capacitance test: test range: 12pF~47uF;
4. Diode test;
5. Tertiary tube test.
6. For other test contents, see ICT test function.
FCT test content:
1. Program writing
I. The chip model is 430
II. The write interface is JTAG
III. Program automatic burning
IV, the chip model is 4064ZC
V, write port logic write port
VI, logical write use manual control write mode.
2. Parameter placement
I. Parameter placement through the communication port, the following two communication methods are provided
i. Infrared communication
ii.MBUS bus communication
iii.485 bus communication
II. The function of parameter implantation according to the detailed communication protocol provided by the customer, or the communication dynamic link library and the detailed interface description.
3. The current test of the whole machine
I. The board to be tested is powered by a 3.6V battery or powered by a function
II. Test battery working current
III. Current test range: 10uA~2mA
IV. Current test accuracy requirements: ±3uA
4. Voltage test
I. Each panel has up to 6 voltage test points
II, the voltage range is less than 3.6V
III. Voltage test accuracy requirements: ±3%
5. Waveform test
I. There are up to 6 waveform test points per panel, which can automatically judge whether the waveform is good or bad;
II. The maximum frequency of the waveform is 1MHZ
III. It can read the window signal time and the delay time of the post-stage signal, etc.
6. Main test content
name |
put value |
Seven-segment coefficient |
0,1,0,0,0,0,0, |
total correction |
100% |
Accumulated flow reset |
0 |
Accumulated time reset |
0 |
manual zero |
0 |
Protocol |
EN13757 |
main address |
65 |
Baud rate setting |
2400 |
Pipe diameter setting |
12.5mm |
Sound channel setting |
1 |
starting flow rate |
5 |
damping |
10 |
Manufacturer ID |
2343 |
Device Type Settings |
household water meter |
Unit settings |
0.001m³ |
Calculation method settings |
unidirectional |
Factory number setting |
12345678 |
Incoming instantaneous flow calibration |
|
Zero operation |
|
Debug sound path |
|
read transient data |
|
Zero point size determination |
0 |
Zero point fluctuation judgment |
-1L/h~1L/h |
read standard output |
0~100 |
Judging the temperature value |
room temperature |
Read software version |
|
Window waveform judgment |
10μS |
Post-stage waveform judgment |
3.6V |
Pulse width waveform judgment |
3.6mS |
Enter signal strength |
|
read signal strength |
|
Signal Strength Judgment |
1.0~2.6 |
Communication test |
|
RF settings |
|
RF data reading and judgment |
|
Whole machine current test |
3~18μA |
Cumulative Pulse Test |
|
Finish |
|
hardware solution
Block Diagram Description
1. PC:
The core of the test system runs ICT software and FCT software, and tests the side panel; realizes the functions of editing, debugging and saving test files, displaying and saving test results;
2. SRC IO card
Communication interface between PC and ICT and FCT;
3. ICT signal board:
SRC8001 standard signal source board, realize the test function of ICT;
4. ICT switch board:
SRC8001 standard CMOS switch board, realize the channel selection function of ICT test;
5. Digital oscilloscope:
Tektronix digital oscilloscope is connected to PC through USB; it realizes the acquisition function of voltage signal and waveform signal on the side panel;
6. Signal acquisition switch board:
Realize the function of switching the channel switch between the oscilloscope and the point to be side;
7. Special function board
Generate 3.6V working voltage signal;
Realize the function of working current acquisition;
Provide switch MBUS channel;
Provide digital IO channels;
8. Programmer
Realize the program writing of the MCU chip (MSP430) on the test board;
Realize the program writing of the MCU chip (4064ZC) on the test board;
9. Programming switch board
Galaxy customization, realize the switch control between the programmer signal and the side panel;
10. ICT channel switch board
Used to disconnect the ICT test channel;
11. MBUS fixing plate
Used to fix the MBUS module;
12. Infrared sensor module
For infrared communication with the board under test
13. Barcode Scanner
Symbol barcode scanner, realize barcode scanning of the circuit board to be tested;
14. Pneumatic pressing tool
SRC8001 comes standard with a pneumatic pressing tool to realize the pressing control of the needle bed;
15. Needle bed
According to the customization of the circuit board to be tested, the physical connection between the board to be tested and the test equipment is realized;
3. Comparative analysis of project import efficiency and manual testing
project | before import | after import |
Single detection time (seconds) | 150 | 15 |
8 hours capacity per station | 192 | 1920 |
After the introduction of the equipment, the efficiency is increased by 10 times compared with manual work. | ||
Detection efficiency | Work for a long time, people are easily fatigued, resulting in a decrease in efficiency and also affecting the quality |
24 hours continuous work |
Fourth, equipment import cost recovery cycle accounting
artificial | SRC functional test system (4Pic parallel test) | ||
Detection speed | 150S/Pic | 10~15S/Pic | |
Inspection record | No records or manual records | Automatically record into the database for easy query and data backtracking |
|
Inspection quality | It may be affected by human factors, and the judgment of waveform data is time-consuming and labor-intensive, and it is difficult to be very accurate for manual judgment. |
It is automatically judged according to the settings, and no human factors are affected . |
|
Detection efficiency | Work for a long time, people are easily fatigued, resulting in a decrease in efficiency and also affecting the quality |
24 hours continuous work |
For detailed plans, please contact our sales staff
Company Tel: 010-58937596
Lei Zhaoxia: 15901121973