CN110601527B - Overload-resistant power supply module for external ballistic data acquisition - Google Patents
Overload-resistant power supply module for external ballistic data acquisition Download PDFInfo
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- CN110601527B CN110601527B CN201910941180.6A CN201910941180A CN110601527B CN 110601527 B CN110601527 B CN 110601527B CN 201910941180 A CN201910941180 A CN 201910941180A CN 110601527 B CN110601527 B CN 110601527B
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- circuit
- power supply
- capacitor
- switch circuit
- resistor
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- 238000005259 measurement Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 36
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 18
- 229910052744 lithium Inorganic materials 0.000 claims description 18
- 230000001960 triggered effect Effects 0.000 claims description 4
- 238000010008 shearing Methods 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/006—Switches operated by mechanical overload condition, e.g. transmitted force or torque becoming too high
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electronic Switches (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses an overload-resistant power supply module for external ballistic data acquisition, which is characterized by comprising a power supply circuit, a mechanical switch circuit, an accelerometer switch circuit, an OR gate, a relay and a DC-DC circuit, wherein the power supply circuit is connected with the accelerometer switch circuit; the power supply circuit is used for outputting stable voltage in an overload state and supplying power to the mechanical switch circuit, the accelerometer switch circuit, the OR gate and the relay; the mechanical switch circuit is used for triggering the RC delay circuit by cutting off the lead under the overload condition, and outputting after delay; the accelerometer switch circuit is used for triggering the RC delay circuit in a pulse output mode under an overload condition and outputting voltage after delay; the two input ends of the OR gate are respectively connected with the mechanical switch circuit and the output end of the switch circuit; the output end of the OR gate is connected with the trigger relay; the DC-DC circuit is used for boosting the voltage output by the relay and providing the required voltage for the pose measurement system; the invention can ensure the voltage stability of the power supply system.
Description
Technical Field
The invention belongs to the technical field of power supply systems, and particularly relates to an overload-resistant power supply module for external ballistic data acquisition.
Background
The intelligent ammunition is used for calculating the posture and position information of the intelligent ammunition by acquiring sensor data such as angular velocity and acceleration of the intelligent ammunition, and sending the intelligent ammunition into a control system to realize functions such as range expansion and accurate striking. During the development testing phase, it is necessary to use a measurement system to collect the external ballistic sensor data of the smart ammunition.
The MEMS inertial sensor is a core component of a measuring system, the measuring system is powered on under the overload condition generated by intelligent ammunition firing, and the structure of the MEMS inertial sensor in the measuring system is damaged, so that the measuring system cannot accurately acquire external trajectory data. On the other hand, the MEMS inertial sensor is in a locked state prior to power-up operation, in which state the MEMS inertial sensor is capable of withstanding very high overload shocks. Therefore, the pose measurement system with the MEMS inertial sensor needs to be powered up to work after the shell is discharged from the bore. It is therefore necessary to design a non-contact power supply module that is overload resistant to power the measurement system after the projectile has been discharged from the bore. In addition, the live ammunition experiment cost of the intelligent ammunition is high, and the reliability of the power supply module needs to be improved. Since the lithium battery is subjected to overload impact and the voltage is pulled down in a short time, a circuit is required to be designed to ensure that the power supply voltage is always stable.
Disclosure of Invention
The invention aims to provide an overload-resistant power supply module for external ballistic data acquisition, which is used for solving the problem that internal devices of a measurement system are damaged under overload impact when intelligent ammunition is launched, and ensuring the voltage stability of a power supply system.
The technical solution for realizing the purpose of the invention is as follows:
An overload-resistant power supply module for external ballistic data acquisition comprises a power supply circuit, a mechanical switch circuit, an accelerometer switch circuit, an OR gate, a relay and a DC-DC circuit;
The power supply circuit is used for outputting stable voltage in an overload state and supplying power to the mechanical switch circuit, the accelerometer switch circuit, the OR gate and the relay;
The mechanical switch circuit is used for triggering the RC delay circuit by cutting off the lead under the overload condition, and outputting after delay;
The accelerometer switch circuit is used for triggering the RC delay circuit in a mode of outputting pulses by the accelerometer module under an overload condition, and outputting after delay;
The two input ends of the OR gate are respectively connected with the mechanical switch circuit and the output end of the switch circuit; the output end of the OR gate is connected with the trigger relay; when any input end of the OR gate is at a high level, the relay is triggered to be closed, so that the relay outputs required voltage;
The DC-DC circuit is used for boosting the voltage output by the relay, providing the required voltage for the pose measurement system and taking the voltage as a power signal of the pose measurement system.
Compared with the prior art, the invention has the remarkable advantages that:
(1) The overload trigger switch circuit during intelligent ammunition firing enables the power supply module to supply power to the outside after the intelligent ammunition is discharged from the chamber.
(2) By using two types of switches, namely an accelerometer switch and a mechanical switch, the triggering reliability is improved.
(3) The power supply voltage is output stably under the overload condition by the mode that the lithium battery is connected with the capacitor in parallel.
Drawings
Fig. 1 is a schematic block diagram of a power supply module.
Fig. 2 is a schematic diagram of a power supply circuit.
Fig. 3 is a schematic diagram of a mechanical switch.
Fig. 4 is a schematic diagram of a mechanical switch.
Fig. 5 is a schematic diagram of an accelerometer switch.
Fig. 6 is a schematic diagram of a two-switch trigger relay.
Fig. 7 is a schematic diagram of a DC-DC circuit.
Detailed Description
The invention is further described with reference to the drawings and specific embodiments.
Referring to fig. 1, an overload-resistant power supply module for external ballistic data acquisition according to the present invention includes a power supply circuit, a mechanical switching circuit, an accelerometer switching circuit, an or gate, a relay, and a DC-DC circuit;
The power supply circuit is used for outputting stable voltage in an overload state and supplying power for the mechanical switch circuit, the accelerometer switch circuit, the OR gate and the relay.
The mechanical switch circuit is used for triggering the RC delay circuit by cutting off the lead under the overload condition, and outputting 3.7V voltage after delay.
The accelerometer switch circuit is used for triggering the RC delay circuit in a pulse output mode under overload conditions, and the part outputs 3.7V voltage after delay.
The two input ends of the OR gate are respectively connected with the mechanical switch circuit and the output end of the switch circuit; the output end of the OR gate is connected with the trigger relay. When any input end of the OR gate is at a high level, the relay is triggered to be closed, so that the relay outputs 3.7V voltage.
The DC-DC circuit is used for boosting the 3.7V voltage output by the relay, providing the required 6V voltage for the pose measurement system and taking the voltage as a power signal of the pose measurement system.
Further, referring to fig. 2, the power supply circuit includes a first lithium battery LI1, a second lithium battery LI2, a capacitor C1, and a resistor R1; the first lithium battery LI1 is connected with the first Schottky diode D1 in series, the second lithium battery LI2 is connected with the second Schottky diode D2 in series, and the capacitor C1 is connected with a resistor R1 and a circuit formed by connecting the third Schottky diode D3 in parallel in series; the three circuits after being connected in series are connected in parallel; the first lithium battery LI1 and the second lithium battery LI2 are respectively powered for the subsequent circuit after being reduced by the first Schottky diode D1 and the second Schottky diode D2, and when any one of the first Schottky diode D1 and the second Schottky diode D2 fails, the other battery is powered for the subsequent circuit, so that the reliability of the power supply module is improved. The resistor R1 is connected with the third Schottky diode D3 in parallel and then connected with the capacitor C1 in series; when the lithium battery voltage is pulled down due to overload, the capacitor can supply power to the subsequent circuit in a short time through the third schottky diode D3. So as to ensure that the capacitor can maintain stable output voltage in the form of capacitor discharge in a short time when the voltage of the lithium battery is pulled down by overload.
The output voltage of the first lithium battery LI1 and the output voltage of the second lithium battery LI2 are 3.7V; the capacitor C1 is a 5F capacitor.
Further, referring to fig. 3, the mechanical switch circuit includes an RC delay circuit, a schmitt trigger U5, an edge trigger U3 with set and reset functions, and a mechanical switch; the RC delay circuit comprises a resistor R15 and a capacitor C10 which are connected in series;
One end of the resistor R15 is connected with a power supply circuit, the capacitor C10 is short-circuited by one wire 15 in an initial state, and the wire 15 passes through a mechanical switch when connected; the mechanical switch is used for cutting off the lead 15 under overload condition to enable the capacitor C10 to enter a charging state; the positive signal of the capacitor C10 is used as an input signal of the schmitt trigger U5, and is connected to the input port a of the schmitt trigger U5, the output end Y of the schmitt trigger U5 is connected to the clock input end CLK of the edge trigger U3 through the resistor R17, the output port Q of the edge trigger U3 outputs an output signal of the whole mechanical switching circuit, and the rest of the signals are used as peripheral circuits of the chip in fig. 3, and reference is made to a chip data manual. SW1 in fig. 3 represents a simple switch formed by cutting a wire with a shear pin of a mechanical switch.
Further, referring to fig. 4, the mechanical switch includes a mass 11, a spring 12, a guide cylinder 13, a shear pin 14, and a baffle 16; the mass block 11, the spring 12, the shear pin 14 and the baffle 16 are all arranged in the guide cylinder 13; one end of the shear pin 14 is fixed with the mass block 11, and the other end passes through the baffle 16; the baffle 16 is fixed with the guide cylinder 13; the spring 12 is arranged between the mass block 11 and the baffle 16 and is in a precompressed state; the opening of the guide cylinder 13 is penetrated by a lead 15; in the overload condition, the mass 11 slides along the guide cylinder 13, the spring 12 is compressed, and the shear pin 14 cuts the wire 15.
Further, referring to fig. 5, the accelerometer switch circuit includes an accelerometer module, a socket J2, an RC delay circuit, a schmitt trigger U7, and an edge trigger U6 with set and reset functions; the RC delay circuit comprises a resistor R21 and a capacitor C13;
the socket J2 is connected with the power supply circuit through a port 1, and is used for supplying power to the accelerometer module, the accelerometer module is grounded through the socket J2 port 2, the accelerometer module is connected with the clock input end CLK of the edge trigger U6 through a resistor R32 connected in series with the socket J2 port 3, the output end Q of the edge trigger U6 is connected with the input end of the Schmitt trigger U7 through a resistor R21, and a capacitor C13 is connected between the resistor R21 and the Schmitt trigger U7; the output Y of schmitt trigger U7 serves as the output signal of the overall accelerometer switching circuit. The accelerometer module is overloaded with a pulse signal OverRange, which is input to the clock input CLK of the edge trigger U6 through the resistor R32 via the port 3 of the socket J2. The remainder of fig. 5 is referred to as a chip data manual as peripheral circuitry of the chip.
Further, IN connection with fig. 6, the output terminal of the or gate is connected to the in+ terminal of the relay LS1, IN-grounded. The output LOAD1 of the relay LS1 is connected to a 3.7V power supply, and the other output LOAD2 (Vsupply) is input as a DC-DC circuit.
Referring to fig. 7, the DC-DC circuit, except for resistor R24, which is selected by itself to control the amplification factor of the DC-DC circuit, may be regarded as a peripheral circuit, and reference may be made to a chip data manual. The voltage signal output by the DC-DC circuit is used as a power signal of the pose measuring system.
The working principle of the invention is as follows:
In the initial state, the capacitor C10 is shorted by a copper wire 15, which copper wire 15 passes through the mechanical switch with the shear pin 14. The input terminal a of the schmitt trigger U5 is grounded by a short-circuited line (copper line), and the input voltage is 0 and the output terminal Y is also 0. The input signal of the edge trigger U3 with the set and reset functions is connected to a power supply through a resistor R14, and the in-phase output end Q of the edge trigger U3 with the set and reset functions is reset in an initial state, and the output is 0. When overload occurs, the mass 11 of the shear pin 14 of the mechanical switch compresses the spring 12 under the action of the overload emitted in the bore, the shear pin 14 moves downwards to shear the copper wire 15, and the mechanical switch is triggered. At this time, the capacitor C10 and the resistor R15 form a delay circuit, and the power supply charges the capacitor C10 through the resistor R15. When the voltage across the capacitor C10 reaches 2V, the input signal of the flip-flop U5 changes from low to high, and the output signal also changes from low to high. This signal is input to the clock signal input CLK of the edge trigger U3 with set and reset functions, at which time the edge trigger U3 comes to a clock rising edge and the in-phase output Q of the edge trigger U3 with set and reset functions outputs a 3.7V voltage signal. The system power-on can be delayed by adjusting the sizes of the resistor R15 and the capacitor C10, wherein the calculation formula is shown as formula 1, T is delay time, VCC provides voltage for a power supply circuit, vout is 3.7V, voltage values of two ends of the capacitor C10 are 2V, and R, C is R15 and C10 in a circuit diagram respectively.
Accelerometer switching principle: as shown in fig. 5, the edge trigger U6 with set and reset functions is reset in an initial state, the output terminal Q outputs 0, and the input terminal D is connected to a 3.7V power supply through a resistor R20. In the initial state, the input end A and the output end Y of the Schmitt trigger U7 are both 0. The port 3 of the socket J2 inputs a short pulse signal at the moment of the discharge of the shell, the pulse signal flows to the clock input end CLK of the edge trigger U6 with the set and reset functions, at this time, the edge trigger U6 with the set and reset functions experiences a clock rising edge, and the voltage of the output end Q is changed from low to high. The voltage signal output by the output end Q of the edge trigger U6 with the setting and resetting functions is used as an input signal of an RC delay circuit, when the input signal is changed from low to high, the capacitor C13 is charged through the resistor R21, and the calculation method is the same as that of the RC delay circuit in the mechanical switch circuit. When the voltage across the capacitor C13 reaches 2V, the input terminal a of the schmitt trigger U7 changes from low level to high level, and the output terminal Y also changes from low level to high level.
When any input signal is high level, the OR gate outputs high level, and then triggers the relay to close, and the output end LOAD2 (Vsupply) outputs 3.7V voltage. The voltage signal is used as an input signal for a DC-DC circuit.
Fig. 7 is a schematic diagram of a DC-DC circuit. The DC-DC circuit section is responsible for converting the 3.7V supply voltage to a 6V voltage. The output voltage is given by equation (2) and the R24 selection is given by equation (3). Where Vout is the DC-DC circuit output voltage, here 6V; vd is diode drop, here 0.7V; a is the voltage gain, here 1.235.
Claims (4)
1. The overload-resistant power supply module for external ballistic data acquisition is characterized by comprising a power supply circuit, a mechanical switch circuit, an accelerometer switch circuit, an OR gate, a relay and a DC-DC circuit;
The power supply circuit is used for outputting stable voltage in an overload state and supplying power to the mechanical switch circuit, the accelerometer switch circuit, the OR gate and the relay;
The mechanical switch circuit is used for triggering the RC delay circuit by cutting off the lead under the overload condition, and outputting after delay;
the accelerometer switch circuit is used for triggering the RC delay circuit in a pulse output mode under an overload condition, and outputting after delay;
The two input ends of the OR gate are respectively connected with the mechanical switch circuit and the output end of the switch circuit; the output end of the OR gate is connected with the trigger relay; when any input end of the OR gate is at a high level, the relay is triggered to be closed, so that the relay outputs required voltage;
The DC-DC circuit is used for boosting the voltage output by the relay, providing the required voltage for the pose measurement system and taking the voltage as a power signal of the pose measurement system;
The power supply circuit comprises a first lithium battery LI1, a second lithium battery LI2, a capacitor C1 and a resistor R1;
the first lithium battery LI1 is connected with the first Schottky diode D1 in series, the second lithium battery LI2 is connected with the second Schottky diode D2 in series, and the capacitor C1 is connected with a resistor R1 and a circuit formed by connecting the third Schottky diode D3 in parallel in series; the three circuits after being connected in series are connected in parallel;
The mechanical switch circuit comprises an RC delay circuit, a Schmidt trigger U5, an edge trigger U3 with setting and resetting functions and a mechanical switch; the RC delay circuit comprises a resistor R15 and a capacitor C10 which are connected in series;
One end of the resistor R15 is connected with a power supply circuit, and in an initial state, the capacitor C10 is short-circuited by a wire which passes through a mechanical switch when connected; the mechanical switch is used for cutting off the lead under the overload condition to enable the capacitor C10 to enter a charging state; the positive electrode signal of the capacitor C10 is used as an input signal of a Schmitt trigger U5 and is connected to an input port A of the Schmitt trigger U5, an output end Y of the Schmitt trigger U5 is connected to a clock input end CLK of the edge trigger U3 through a resistor R17, and an output port Q of the edge trigger U3 outputs an output signal of the whole mechanical switch circuit;
The mechanical switch comprises a mass block (11), a spring (12), a guide cylinder (13), a shearing pin (14) and a baffle plate (16); the mass block (11), the spring (12), the shear pin (14) and the baffle (16) are all arranged in the guide cylinder (13); one end of the shearing pin (14) is fixed with the mass block (11), and the other end of the shearing pin penetrates through the baffle plate (16); the baffle (16) is fixed with the guide cylinder (13); the spring (12) is arranged between the mass block (11) and the baffle plate (16) and is in a precompressed state; the lead passes through the opening of the guide cylinder (13);
The accelerometer switch circuit comprises an accelerometer module, a socket J2, an RC delay circuit, a Schmidt trigger U7 and an edge trigger U6 with setting and resetting functions; the RC delay circuit comprises a resistor R21 and a capacitor C13;
the accelerometer module is connected with a power supply circuit through a first port (1) of a socket J2, a second port (2) is grounded, a third port (3) is connected with a clock input end CLK of an edge trigger U6 through a resistor R32, an output end Q of the edge trigger U6 is connected with an input end of a Schmitt trigger U7 through a resistor R21, and a capacitor C13 is connected between the resistor R21 and the Schmitt trigger U7; the output Y of schmitt trigger U7 serves as the output signal of the overall accelerometer switching circuit.
2. The power supply module according to claim 1, wherein the output voltages of the first lithium battery LI1 and the second lithium battery LI2 are each 3.7V; the capacitor C1 is a 5F capacitor.
3. The power supply module according to claim 1, wherein the delay time T of the RC delay circuit can delay the system power-up by adjusting the magnitudes of the resistor R15 and the capacitor C10.
4. A power supply module according to claim 3, characterized in that the delay time T is:
Wherein VCC provides voltage for the power supply circuit, vout is the voltage value at two ends of the capacitor C10, R, C is the value of the resistor and the capacitor in the corresponding circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941180.6A CN110601527B (en) | 2019-09-30 | 2019-09-30 | Overload-resistant power supply module for external ballistic data acquisition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910941180.6A CN110601527B (en) | 2019-09-30 | 2019-09-30 | Overload-resistant power supply module for external ballistic data acquisition |
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| Publication Number | Publication Date |
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| CN110601527A CN110601527A (en) | 2019-12-20 |
| CN110601527B true CN110601527B (en) | 2024-04-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055301U (en) * | 1989-05-31 | 1990-03-28 | 徐雅佳 | Automatic overload protective arrangement |
| KR20060001285A (en) * | 2004-06-30 | 2006-01-06 | 엘지.필립스 엘시디 주식회사 | Curcuit for driving liquid crystal display device |
| CN105450203A (en) * | 2015-11-13 | 2016-03-30 | 得理电子(上海)有限公司 | Interference filtering device and interference filtering method for rapid on-off mechanical switches |
| CN107153384A (en) * | 2017-06-29 | 2017-09-12 | 北京宏动科技有限公司 | Active MEMS inertia switches |
| CN109245053A (en) * | 2018-08-30 | 2019-01-18 | 广州金升阳科技有限公司 | A kind of overload protecting circuit |
| CN210669889U (en) * | 2019-09-30 | 2020-06-02 | 南京理工大学 | Overload-resistant power supply module for data acquisition of outer missile way |
-
2019
- 2019-09-30 CN CN201910941180.6A patent/CN110601527B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2055301U (en) * | 1989-05-31 | 1990-03-28 | 徐雅佳 | Automatic overload protective arrangement |
| KR20060001285A (en) * | 2004-06-30 | 2006-01-06 | 엘지.필립스 엘시디 주식회사 | Curcuit for driving liquid crystal display device |
| CN105450203A (en) * | 2015-11-13 | 2016-03-30 | 得理电子(上海)有限公司 | Interference filtering device and interference filtering method for rapid on-off mechanical switches |
| CN107153384A (en) * | 2017-06-29 | 2017-09-12 | 北京宏动科技有限公司 | Active MEMS inertia switches |
| CN109245053A (en) * | 2018-08-30 | 2019-01-18 | 广州金升阳科技有限公司 | A kind of overload protecting circuit |
| CN210669889U (en) * | 2019-09-30 | 2020-06-02 | 南京理工大学 | Overload-resistant power supply module for data acquisition of outer missile way |
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| CN110601527A (en) | 2019-12-20 |
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