Controller and Programmer to sequential firing detonators in s7 rocket models. Size: 26 x 40 x 12 mm(17mm witch connector)

Transcription

1 Controller and Programmer to sequential firing detonators in s7 rocket models Device was built to sequential firing detonators in s7 rocket models. It is fully programmable device with microprocessor. Device parameters: 1. Number of detonators 7 2. AC voltage: 2,5 5,5V 3. Device current consumption: 3,7mA 7,8mA 4. Detonator maximal current: U (AC) / 2.2 (for 3,8V 1,7A) 5. Detonators control: Yes 6. Accumulator charger: 1S Li-Pol 7. Current of charging: 200mA 8. AC of charger: 5,0V 6,0V View controller Size: 26 x 40 x 12 mm(17mm witch connector) Złącze P Złącze P Device has two connectors. There are needed connectors on equipment. Below are written signals on this pins. Connector P1: 1,3,5,7,9,11,13 detonator ,4,6,8,10,12,14 common detonator s AC jumper of armament 17 +LED indicating diode 18 - LED as above 19 RxD transmitting line from programmer 20 transmitting line mass 21 TxD transmitting line to programmer 22 mass 23 - D minus of indicating charger diode 24 +D plus of indicating charger diode

2 Connector P2: 1,3 + detonators and device s power AC 2,4 power AC s mass 5 + charger s power AC 6 charger - power AC mass Diagram of connections is below. In this case device is powered by the same accumulator as detonator. There s needed enough capacity accumulator with enough current efficiency. If accumulator voltage will fall under 2,5V then device might stop working. There s enough big capacitor mounted in device which should provide device s work for few seconds after voltage fall. Very important!!! Reverse connecting of accumulator will destroy charger s system. Unfortunately in so small system there s no way to protect charger which is very sensitive for reverse connection. Double check of how we want to connect accumulator is highly recommended!

3 If we want to power device from two, separated Accu, It should have been done like on diagram below. To power device 50mAh would be enough. It will afford device s work for about 10 hours. Additional accu can t have higher voltage than main accu. (+ 0.5V) Attention: Charger is charging only one Accu connected to P2. In connections shown above current flowing through single detonator is about 1,7A (for 3,8V). Flowing of that big current lets to connect parallel up to 3 detonators. Defect of this solution is that from accu is taken big current. Typical detonator will burn out from current about 0.6A.

4 If we want to limit current, it should be connected as one of diagrams shown below. On first every detonator is connected to separated limiting resistor. If next detonators are fired after enough long time, they can be connected as on below diagram, where every third is connected to common resistor.

5 Resistor value should be counted by formula: R = (U accu / I deton ) 2,2 Where U accu = Accumulator voltage w [V] (for Li-Pol it is 3,6V) I deton = Needed current flowing through detonator in [A] Value 2,2 is a value o resistor originally mounted in device. R = value of additional resistor in [Ω] For example example we want to receive I deton = 0,7A with voltage 3,6V R = (3,6 / 0,7) 2,2 we receive value about 2,9 Ω. The nearest resistor has value 2,7Ω Resistor should have power minimum 1W Indicating diode Device has indicating diode, which is informing about appropriate condition of device. There s very light diode on equipment so it should be easy to visible. Diode indicates condition of device by appropriate combination of flashes. - Slow flashing, continuous by 1s device not armed, jumper appropriate - Two quick flashes then 1,5s brake there s no jumper of arming, device not armed. After appropriating of jumper diode indicates continuous (as above) and device is ready to arming by programmer. - Quick constant flashes by 0.3s jumper appropriate, device armed and ready to flight. - 3 quick flashes, break for 1s Firing process have started. Programming Device s programmer is on equipment. Programmer is equipped with color screen and manipulator rotationallybutton. Choosing line from menu displayed on screen is followed by rotating manipulator left or right. Entering to chosen line is followed by pressing manipulator. Next to screen is power turning On button. Turning Off programmer is followed by pressing and holding manipulator for about 3s. Programmer has built in energy saver mode. If, during 3 minutes time, manipulator wouldn t be used, programmer will turn off automatically. To power programmer is used 9V battery. It will afford about 50 hours of constant work. On side, programmer has connector to driver (device). There should ve used 3,5mm Jack connector and three lead wire. Setting detonator s times After choosing on menu line Detonator s times and pushing manipulator, programmer will communicate with device, which would be signalized on the bottom of screen by < > on red background. If wire wouldn t be connected or it would be connected conversely, there will be Communication Failure With right connection, on screen will be shown times for individual detonators. Times are measured incrementally these are times measured between consecutive firing.

6 So, if we set times like that: Det 1: 0.5 Det 2: 0.3 Det 3: 0.7 It means that first detonator will fire after 0.5s counting from drawing arming jumper, second one 0.3s after first one, so 0.8s after drawing jumper. Third detonator will fire 0.7s after second one, so 1,5s after drawing jumper. Time setting Light up adequate line on menu then press manipulator. Time value would be lighted up, now by rotating manipulator set right time value. Time could be set from 0 to 25,5s with 0,1s accuracy. After setting time press manipulator again and go to setting next times. After setting all times they should be send to device s system. It could be done by rotating manipulator right. After lighting time Det 7 and another turning right manipulator, data would be send to device which is respectively indicated. If we want to give up with sending set times, rotate manipulator left. After passing line Det 1 main menu transition occurs. Firing check Device can control firing following detonators. First detonator is always fired. Next detonators are fired depending on chosen settings. If we choose Yes then next detonator wouldn t be fired until indicated detonator would have fired. Following detonators wouldn t be fired also. For example we re setting in Detonator s control Det 1: No Det 2: Yes First detonator is always fired. Second one will be fired no matter if first one does, because firing control for Det. 1 is turned off. Third detonator would be fired only when second detonator would have fired earlier. Setting firing control is analogous to time setting, bu instead of time s value we can choose option Yes or No. It should have been remembered that data sending is followed by rotating manipulator right until passing line Det 6. Detonator s test After choosing on screen would occur communication about right connecting of detonators and about their efficiency. In following lines, after communication Det 1: Det 7: there would occur sign - or. Sign - indicating detonator s lack or bad connection, sign indicating right connection. We aren t setting anything in this menu. Arming After connecting AC to device it is always not armed. It should have been remembered because even if we arm device by programmer, after disconnection of power supply and next connection to AC, device would be not armed. This is for preventing firing rocket, when we forgot to add arming jumper. After entering menu programmer will read condition of arming jumper. If it isn t established, programmer wouldn t let arming and will show adequate communicate. Arming is possible only when arming jumper is fitted. After setting Arming on Yes manipulator should be turned right for sending data to device s system. Data sending is indicated on screen by < >.

7 Battery status On screen will occur communication: V p = V s = And voltage of programmer and device s system would be shown. Settings In menu Settings we have three sub-menu: Firing time: Duration of firing impulse. It could be set in range from 0,1s to 1,5s. If time duration would be set on 0.0s then device will automatically took 0,5s time. Screen: Language: After pressing manipulator, inscription turn will occur. After rotating manipulator screen s orientation would be changed as manipulator s turnings. There s possibility to choose menu s language.