CN117006904A - Ignition input energy measurement method and equipment based on MEMS transducer - Google Patents
Ignition input energy measurement method and equipment based on MEMS transducer Download PDFInfo
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- CN117006904A CN117006904A CN202311211986.2A CN202311211986A CN117006904A CN 117006904 A CN117006904 A CN 117006904A CN 202311211986 A CN202311211986 A CN 202311211986A CN 117006904 A CN117006904 A CN 117006904A
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- 238000000691 measurement method Methods 0.000 title description 3
- 238000012360 testing method Methods 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000004891 communication Methods 0.000 claims abstract description 8
- 230000026683 transduction Effects 0.000 claims description 35
- 238000010361 transduction Methods 0.000 claims description 35
- 238000005070 sampling Methods 0.000 claims description 31
- 238000007599 discharging Methods 0.000 claims description 19
- 239000003990 capacitor Substances 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000003814 drug Substances 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 230000000977 initiatory effect Effects 0.000 abstract description 4
- 239000002360 explosive Substances 0.000 abstract description 2
- 238000010304 firing Methods 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000011990 functional testing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C21/00—Checking fuzes; Testing fuzes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a method for testing ignition input energy based on an MEMS (micro-electromechanical system) transducer, which aims at a initiating explosive device test to determine that the transducer needs to accurately determine the state of applying electric energy to the transducer in the ignition process, and has great influence on ignition reliability, safety and the like. The invention realizes more accurate measurement under the condition of not influencing the characteristic state of the ignition system. So that the test data is more accurate, safer, simpler and more reliable. Meanwhile, the test efficiency is improved, and the test cost is reduced. The functions of ignition control and energy input selection are integrated in one module, then the upper computer and the control module are controlled by communication control or direct circuit, the distance can be at least more than 3 meters, the testing process is safe, and the testing purpose can meet the requirements.
Description
Technical field:
the invention relates to the field of MEMS (micro-electromechanical systems) energy conversion elements, in particular to an ignition input energy measurement method based on an MEMS energy conversion element.
The background technology is as follows:
along with the development of the ignition technology, the digital ignition technology is widely applied to ignition elements such as electronic detonators, missiles, rockets, spacecrafts and the like. Therefore, the requirement on the MEMS transducer is also higher and higher, the ignition excitation process is a microsecond instant process, and the experiment requires accurate measurement on ignition input energy, ignition initiation time, input voltage and input current. In the development process, devices which need to be supported for the ignition research analysis of the transducer are becoming higher and higher. The current detection of the conventional energy storage ignition measurement cannot reach the required precision, and cannot meet the system error caused by the large lead length.
The invention comprises the following steps:
in view of the problem of no equipment means in the prior art, the invention solves the problem of lead wires of measuring instrument equipment, adopts a reasonable current acquisition mode, and solves the problem of accuracy of current acquisition. The energy input device can also measure the effective energy input during ignition by matching with the light target, and solves the problem that the energy conversion source directly measures the effective energy input under different sensitivities of the ignition piece.
The invention aims to provide an ignition input energy testing method based on an MEMS transducer, which comprises the following steps:
(1) the circuit connection of each module is as follows: when the energy of the transducer is tested, the selection switch and the protection switch are connected with the ignition energy control module, and a certain energy input mode is selected to connect the transducer with the sampling resistor; the ignition energy control module is integrated by an energy input module, an ignition control module and a power supply management circuit;
the selection switch is connected with the protection switch in series, and the selection switch can not start ignition in a stop work selection state or a protection state, so that the protection state is achieved; the transduction element is connected with the sampling resistor in series;
the ignition control module comprises a communication circuit, an MCU controller and an ignition control circuit; the energy input module comprises a power supply circuit with three modes, namely an adjustable current constant current source, an adjustable voltage constant voltage source and a capacitor discharge circuit.
(2) Setting parameters: setting working parameters such as working voltage or working current through an upper computer, transmitting the working parameters to an ignition energy control module, controlling a selection switch and a protection switch to select the conduction of a required mode of an energy input module, and applying the conduction to a transduction element and a sampling resistor; the transduction element is connected with the sampling resistor in series;
(3) collecting data: the high-speed data acquisition module Is connected to the transduction element and the sampling resistor, and can acquire the voltage value Vs of the transduction element and the voltage value Vt of the sampling resistor connected in series at the moment of execution, calculate the passing current value Is of the transduction element and obtain the discharging current passing through the transduction element;
(4) input energy is obtained: according to the characteristic data of the test medicament and the transduction element, acquiring ignition time Tf by matching with a light target, and calculating input energy before ignition;
the transducer inputs instantaneous power:
energy input to the transducer: (from t0 to tf)
The voltage instantaneous data and the current instantaneous data of the discharging process can be obtained through the high-speed acquisition card, the instantaneous energy is obtained by multiplying the acquisition time interval time difference, and the input energy conversion element electric quantity integral value of the whole discharging process is obtained after integration, so that the integral energy value is connected into a line point by point, and the energy curve of the igniting process is obtained.
The power supply circuit of the 'adjustable current constant current source' can adjust the current output to a constant current value used for testing according to control, and the control loop is connected with a firing function; the power supply circuit of the adjustable voltage constant voltage source can adjust the voltage output to a constant voltage value used for testing according to control, and the control loop is connected with a firing function; the capacitor discharging circuit can be connected to the circuit to switch on the ignition function according to control.
The resistance value of the sampling resistor is far lower than the bridge resistance value of the transduction element.
It is another object of the present invention to provide a firing input energy measurement device based on MEMS transducers.
The ignition input energy test equipment based on the MEMS transducer comprises an ignition energy control module, a selector switch, a protection switch upper computer, a transducer element, a sampling resistor and a high-speed data acquisition module; the ignition energy control module is integrated by an energy input module, an ignition control module and a power supply management circuit, wherein the ignition control module comprises a communication circuit, an MCU controller and an ignition control circuit; the energy input module comprises a power supply circuit with three modes, namely an adjustable current constant current source, an adjustable voltage constant voltage source and a capacitor discharge circuit. The power supply circuit of the 'adjustable current constant current source' can adjust the current output to a constant current value used for testing according to control, and the control loop is connected with a firing function; the power supply circuit of the adjustable voltage constant voltage source can adjust the voltage output to a constant voltage value used for testing according to control, and the control loop is connected with a firing function; the capacitor discharging circuit can be connected to the circuit to switch on the ignition function according to control.
The selection switch is connected with the protection switch in series, and the selection switch can not start ignition in a stop work selection state or a protection state, so that the protection state is achieved; the transduction element is connected with the sampling resistor in series; the selection switch selects a certain mode of the energy input module to conduct.
The high-speed data acquisition module is connected to the transduction element and the sampling resistor, and can acquire the voltage value of the transduction element and the voltage value of the sampling resistor connected in series at the moment of execution; the transduction element is connected in series with a sampling resistor, the resistance value of which is far lower than the bridge resistance value of the transduction element.
The invention separates the energy conversion control part and the instrument upper computer part, CAN connect the ignition energy control module by serial communication (RS 485, USB, CAN, ethernet interface and the like CAN also be used), and the ignition energy control module CAN be connected close to the transducer element in a short distance, thereby reducing errors caused by the lead wires of the transducer element.
The working mode selection switch of the invention not only can select the working mode and place the selection switch in the 0 gear, but also can ensure the ground of the ignition loop when the energy conversion element is replaced, thereby achieving the effect of safety protection.
The technical effects are as follows: the invention can more accurately measure the electric energy applied to the transducer, the pulse width of the power, the detonation time and the detonation current under the condition of not affecting the characteristic state of the ignition system. So that the test data is more accurate, safer, simpler and more reliable. Meanwhile, the test efficiency is improved, and the test cost is reduced. The invention can be used for constant-current firing, constant-voltage firing and capacitor firing working modes of the transducer, and the measured energy precision can reach the level of 5% millijoules. The method can be used for measuring the transducer elements such as semiconductor bridges, bridge wires, bridge film resistances and the like. The device separates the energy control part from the upper computer, can reach a safety distance of more than 3 meters, and achieves the effect of safety protection during initiation by using a medicine agent experiment. The invention has low equipment cost and high practical value, and can ensure the personal safety of a test operator.
Description of the drawings:
FIG. 1 is a schematic diagram of the MEMS transducer input energy measurement principle of the present invention.
The specific implementation method comprises the following steps:
the ignition input energy test equipment based on the MEMS transducer comprises an ignition energy control module, a selector switch, a protection switch upper computer, a transducer element, a sampling resistor and a high-speed data acquisition module; the ignition energy control module is integrated by an energy input module, an ignition control module and a power supply management circuit, wherein the ignition control module comprises a communication circuit, an MCU controller and an ignition control circuit; the energy input module comprises a power supply circuit with three modes, namely an adjustable current constant current source, an adjustable voltage constant voltage source and a capacitor discharge circuit. The power supply circuit of the 'adjustable current constant current source' can adjust the current output to a constant current value used for testing according to control, and the control loop is connected with a firing function; the power supply circuit of the adjustable voltage constant voltage source can adjust the voltage output to a constant voltage value used for testing according to control, and the control loop is connected with a firing function; the capacitor discharging circuit can be connected to the circuit to switch on the ignition function according to control.
The selection switch is connected with the protection switch in series, and the selection switch can not start ignition in a stop work selection state or a protection state, so that the protection state is achieved; the transduction element is connected with the sampling resistor in series; the selection switch selects a certain mode of the energy input module to conduct.
The high-speed data acquisition module is connected to the transduction element and the sampling resistor, and can acquire the voltage value of the transduction element and the voltage value of the sampling resistor at the moment of execution; the resistance value of the sampling resistor is far lower than the bridge resistance value of the transduction element.
An ignition input energy test method based on an initiating explosive device transducer comprises the following steps:
(1) As shown in fig. 1, when the transducer is tested, different working modes are selected, a switch is selected according to the selection S1, a mode of igniting and powering up is communicated with a discharging loop, and when the switch is closed, a '0' grounding protection is connected;
(2) SW is a protection switch, when the '0' is connected, the discharging loop is connected to the ground to start the discharging protection state, the '1' is connected to the working control circuit, when the S1 is in the stop working selection state or the SW is in the protection state, any one of the switches can not start to fire, so that the protection state is achieved;
(3) Connecting a tested transduction element experiment board for testing the Rs;
(4) If the capacitor is adopted for discharging, the capacitor charging loop is required to be connected, and a charging capacitor with corresponding capacity is adopted to be connected into the loop; (other functional test selection theory)
(5) Setting working parameters such as current working current and voltage through upper computer software, a communication circuit and a control MCU, so that discharging works in a set state, and after an operator is ready, executing a test to excite ignition energy output;
(6) The set working voltage or current is applied to the sensing element Rs and the sampling resistor R1 connected in series through S1;
(7) Because the energy conversion element Rs and the sampling resistor R1 are provided with electrical impedance loads, the current and the voltage division in the electric energy loading process are formed at the same time in the sampling resistor R1;
(8) The high-speed acquisition card is connected to the transduction element Rs and the sampling resistor R1 connected in series, and can acquire the voltage division of the transduction element Rs and the sampling resistor R1 connected in series at the moment of execution;
(9) Under the execution process, the resistance value of the transduction element Rs (when a semiconductor bridge is used, the resistance value is in a change state along with the temperature rise) can be measured by a high-speed acquisition card to obtain an instantaneous voltage value Vs;
(10) Under the execution process, the resistance value of the resistor R1 (the resistance value Is a high-precision known resistor) can be used for measuring the instantaneous voltage value Vt through the high-speed acquisition card, calculating the passing current value Is of the instantaneous voltage value Vt, and also obtaining the discharging current passing through the transduction element;
(11) The voltage curve data and the current curve data of the discharging process can be obtained through the high-speed acquisition card, the time difference of the acquisition time interval can be multiplied, the instantaneous energy can be obtained, and the electric quantity integral value of the input transduction element of the whole discharging process can be obtained after integration.
(12) If the medicament and bridge ignition characteristic data are tested, the input energy before ignition is required to be calculated, the ignition time Tf can be acquired by matching with a professional light target, and the integration time period (10) is up to Tf.
The transducer inputs instantaneous power:
energy input to the transducer: (from t0 to tf)
(13) The protection effect of the S1 shows that when the tested ignition experiment plate is replaced, the S1 is rotated to the 0 position, the ignition circuit is grounded, and the experiment circuit cannot be electrified, so that the protection effect is achieved;
(14) S1, a selection experiment mode is described as 1, when S1 rotates to a 1 gear, a power supply loop of an adjustable current constant current source is connected, a test board can adjust current output to a constant current value used for testing according to control of a user, and the control loop is connected with a firing function; (the current of the lifting method can be set up to control the experimental main board circuit by the upper computer, and the current is increased or decreased by steps)
(15) S1, selecting an experimental mode description 2, when S1 rotates to a gear of 2, switching on a power supply loop of an adjustable voltage constant voltage source, adjusting voltage output to a constant voltage value used for testing by a test board according to control of a user, and switching on a firing function by a control loop; (the current of the lifting method can be set up to control the experimental main board circuit by the upper computer, and the voltage is increased or decreased by steps)
(16) S1, selecting an experimental mode to show 3, when S1 rotates to a 3 gear, switching on a power supply loop of a capacitor discharging circuit, selecting a capacitor with a matched required capacitance value by a test board according to control of a user, and welding the capacitor into the loop to switch on a firing function;
(17) S1, when different functions are selected, the acquired data processing mode is effective as well;
(18) The use of R1, the resistance value of R1 is far lower than the bridge resistance value of Rs, the voltage and current generated in the loop have small and negligible influence, and the energy loss caused by the algorithm in the system calculation can be removed.
Claims (5)
1. A method for testing the ignition input energy based on a MEMS transducer element, comprising the steps of:
(1) the circuit connection of each module is as follows: when the energy of the transducer is tested, the selection switch and the protection switch are connected with the ignition energy control module, and a certain energy input mode is selected to connect the transducer with the sampling resistor; the ignition energy control module is integrated by an energy input module, an ignition control module and a power supply management circuit;
the ignition control module comprises a communication circuit, an MCU controller and an ignition control circuit; the energy input module comprises a power supply circuit with three modes, namely an adjustable current constant current source, an adjustable voltage constant voltage source and a capacitor discharge circuit;
(2) setting parameters: setting working parameters such as working voltage or working current through an upper computer, transmitting the working parameters to an ignition energy control module, controlling a selection switch and a protection switch to select the conduction of a required mode of an energy input module, and applying the conduction to a transduction element and a sampling resistor;
(3) collecting data: the high-speed data acquisition module Is connected to the transduction element and the sampling resistor, and can acquire the voltage value Vs of the transduction element and the voltage value Vt of the sampling resistor at the moment of execution, calculate the passing current value Is of the transduction element and obtain the discharging current passing through the transduction element;
(4) input energy is obtained: according to the characteristic data of the test medicament and the transduction element, acquiring ignition time tf by matching with a light target, and calculating input energy before ignition; the transducer inputs instantaneous power:
energy input to the transducer: (from t0 to tf)
The voltage instantaneous data and the current instantaneous data of the discharging process can be obtained through the high-speed acquisition card, the instantaneous energy is obtained by multiplying the acquisition time interval time difference, and the input energy conversion element electric quantity integral value of the whole discharging process is obtained after integration, so that the integral energy value is connected into a line point by point, and the energy curve of the igniting process is obtained.
2. The method for testing the ignition input energy based on the MEMS transducer according to claim 1, wherein the selection switch is connected in series with the protection switch, and the selection switch cannot be started to ignite in a stop operation selection state or in a protection state, so that the protection state is achieved; the transduction element is connected in series with a sampling resistor.
3. The method for testing the ignition input energy based on the MEMS transducer element according to claim 1, wherein the power supply circuit of the adjustable current constant current source can adjust the current output to a constant current value used for testing, and the control loop turns on the ignition function; the power supply circuit of the adjustable voltage constant voltage source can adjust the voltage output to a constant voltage value used for testing, and the control loop is connected with the ignition function; the capacitor discharging circuit can switch on the capacitor access loop to the ignition function.
4. The method of claim 1, wherein the sampling resistor has a resistance value substantially lower than a bridge resistance value of the transducer element.
5. The ignition input energy test equipment based on the MEMS transduction element is characterized by comprising an ignition energy control module, a selection switch, a protection switch upper computer, a transduction element, a sampling resistor and a high-speed data acquisition module; the high-speed data acquisition module is connected to the transduction element and the sampling resistor, and can acquire the voltage value of the transduction element and the voltage value of the sampling resistor at the moment of execution; the ignition energy control module is integrated by an energy input module, an ignition control module and a power supply management circuit, wherein the ignition control module comprises a communication circuit, an MCU controller and an ignition control circuit; the energy input module comprises a power supply circuit with three modes, namely an adjustable current constant current source, an adjustable voltage constant voltage source and a capacitor discharge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311211986.2A CN117006904A (en) | 2023-09-19 | 2023-09-19 | Ignition input energy measurement method and equipment based on MEMS transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311211986.2A CN117006904A (en) | 2023-09-19 | 2023-09-19 | Ignition input energy measurement method and equipment based on MEMS transducer |
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| Publication Number | Publication Date |
|---|---|
| CN117006904A true CN117006904A (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311211986.2A Withdrawn CN117006904A (en) | 2023-09-19 | 2023-09-19 | Ignition input energy measurement method and equipment based on MEMS transducer |
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| Country | Link |
|---|---|
| CN (1) | CN117006904A (en) |
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2023
- 2023-09-19 CN CN202311211986.2A patent/CN117006904A/en not_active Withdrawn
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Application publication date: 20231107 |
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| WW01 | Invention patent application withdrawn after publication |