CN214122349U - Circuit for detecting thunder performance - Google Patents
Circuit for detecting thunder performance Download PDFInfo
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- CN214122349U CN214122349U CN202023325347.3U CN202023325347U CN214122349U CN 214122349 U CN214122349 U CN 214122349U CN 202023325347 U CN202023325347 U CN 202023325347U CN 214122349 U CN214122349 U CN 214122349U
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Abstract
The utility model provides a circuit for detecting thunder performance, a power supply conversion circuit is connected with a singlechip U1 and is used for providing the working voltage of the singlechip U1; in N ignition utensils, every ignition utensil resistance is R, N ignition utensils parallel connection, one end ground connection, another termination constant current source circuit output and singlechip U1 of N ignition utensils, this common point is A point, singlechip U1 with the LCD display screen is connected, singlechip U1 gathers the electromotive force of N parallel ignition utensils other end and shows on the LCD display screen, a plurality of ignition utensils that have resistance R are parallelly connected, introduce invariable electric current through constant current source circuit, the electromotive force of A acquisition point feeds back to the ADC conversion pin of singlechip, when having the damage in the ignition utensil that connects in parallel, the electromotive force change of quantity leads to A point, handle through the singlechip and judge how many mines can normally work, then show by LCD, this patent simple structure, high efficiency, the convenient quantity of monitoring the mine of normally working.
Description
Technical Field
The utility model belongs to the technical field of the detection of thunder performance and specifically relates to a circuit for detecting thunder performance detects whether have damage and the figure of damage in a plurality of thunder.
Background
The performance test is to test various performance indexes of the system by simulating various normal, peak and abnormal load conditions through a test tool, for mines of the types such as land mines, underwater mines and torpedoes, in order to prevent the condition that explosion cannot occur during later use caused by fault damage of the mines, when more mines occur, the progress is slower when the mines are checked one by one, and therefore, the mines which can be tested to determine whether faults exist in the mines are needed.
SUMMERY OF THE UTILITY MODEL
The utility model provides a circuit for detecting thunder performance for whether there is the damage in detecting a plurality of thunder, simple structure, flexible operation improve efficiency of software testing, in order to realize above-mentioned purpose, adopt following technical scheme: the method comprises the following steps: the device comprises a single chip microcomputer U1, N ignition devices, a constant current source circuit, a power supply conversion circuit and an LCD display screen, wherein the power supply conversion circuit is connected with the single chip microcomputer U1 and used for providing working voltage for the single chip microcomputer U1; in the N ignition devices, each ignition device resistor is R, the N ignition devices are connected in parallel, one end of each ignition device is grounded, the other end of each ignition device resistor is connected with the output end of the constant current source circuit and the single chip microcomputer U1, the single chip microcomputer U1 is connected with the LCD display screen, and the single chip microcomputer U1 collects electromotive force of the other end of each parallel ignition device and displays the electromotive force on the LCD display screen.
Preferably, the constant current source circuit includes: the operational amplifier A1 and the voltage-stabilizing diode D1, a 12v power supply is connected with a resistor R4, the other end of the resistor R4 is connected with the cathode of a voltage-stabilizing diode D1 and a resistor R5, the anode of a voltage-stabilizing diode D1 is grounded, the breakover of the voltage-stabilizing diode D1 is used for maintaining the voltage of the positive input end of the operational amplifier A1 to be stable and used as a reference voltage, and the other end of the resistor R5 is connected with the positive input end of the operational amplifier A1; the reverse input end of the operational amplifier A1 is connected with the resistor R2, and the other end of the resistor R2 is grounded; the output end of the operational amplifier A1 is connected with one end of a resistor R3, a resistor R1 is connected between one end of a resistor R3 and the reverse input end of the operational amplifier A1, a resistor R6 is connected between the other end of a resistor R3 and the forward input end of the operational amplifier A1, and the current flowing through the resistor R3 is constant.
Preferably, the other end of the N igniters is connected to the other end of the resistor R3, the common point is a point a, the total resistance value of the igniters connected in parallel changes with igniter data, and the electromotive force of the point a changes.
Preferably, the power conversion circuit adopts a conversion chip L7805, and a Vin pin and a GND pin of the conversion chip are connected with a socket P1 and used for introducing power supply voltage; VIN voltage is input to a Vin pin of the conversion chip, and converted VCC voltage is output to a Vout pin of the conversion chip.
Preferably, a decoupling capacitor C4 is connected between the Vin pin and the GND pin of the conversion chip to prevent parasitic oscillation caused by a positive feedback path formed by a circuit through a power supply; the output pin of the converting chip Vout is connected with one end of a capacitor C3, and the other end of the capacitor C3 is grounded.
Preferably, the single chip microcomputer U1 is STM32F103RB type, the VDD pin of the single chip microcomputer U1 is connected with VCC voltage, the PA2 pin of the single chip microcomputer U1 is connected with the other end of the resistor R3, and the PC2 pin of the single chip microcomputer U1 is connected with the LCD display screen.
Preferably, the single chip microcomputer U1 is connected to the download interface P2, and the download interface P2 is configured to write programming data into the single chip microcomputer U1.
The utility model has the advantages that: a plurality of igniters that have resistance R connect in parallel to introduce invariable electric current through constant current source circuit, and with the electromotive force feedback of A acquisition point to the ADC conversion pin of singlechip, when having the damage in parallelly connected igniters, the electromotive force change of quantity leads to the A point, handle through the singlechip and judge how many mines can normally work, then show by LCD, this patent simple structure, directly perceived, the number of the mine of effective monitoring normally working.
Drawings
FIG. 1 is a schematic circuit diagram of the present patent application;
FIG. 2 is a circuit schematic of a power conversion circuit;
fig. 3 is a pin connection diagram of the download interface.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1, the present patent application, shown in fig. 1, includes: the device comprises a singlechip U1, N ignition devices, a constant current source circuit, a power conversion circuit and an LCD display screen, wherein the power conversion circuit is connected with the singlechip U1 and is used for providing a working voltage of a singlechip U1; in the N igniters, each igniter has a resistor R, the N igniters are connected in parallel, one end of each igniter is grounded, the other end of each igniter is connected with the output end of the constant current source circuit and the single chip microcomputer U1, the common point is an A point, the constant current source circuit outputs constant current, the total resistance value of the N igniters changes along with the change of the number, and therefore the electromotive forces of the A points are different; the single chip microcomputer U1 is connected with the LCD display screen, and the single chip microcomputer U1 gathers the electromotive force of N parallelly connected igniters A point and shows on the LCD display screen.
As shown in fig. 2, a socket P1 is a power input end, a socket P1 introduces a voltage in a range of 12-24v, a power conversion chip introduces a power voltage through a socket P1, a power conversion chip N1 adopts L7805, a Vin pin and a GND pin of the conversion chip are connected with the socket P1 for introducing the power voltage, a decoupling capacitor C4 is connected between the Vin pin and the GND pin of the conversion chip, an anode of the decoupling capacitor C4 is connected with the Vin pin of the conversion chip, a cathode of the decoupling capacitor C4 is used for preventing a circuit from parasitic oscillation caused by a positive feedback path formed by a power supply; VIN voltage is input into a Vin pin of the conversion chip, 5v VCC voltage after conversion is output from a Vout pin of the conversion chip, an output pin of the Vout of the conversion chip is connected with one end of a capacitor C3, and the other end of the capacitor C3 is grounded.
As shown in fig. 1, the constant current source circuit includes: the operational amplifier A1 and the voltage-stabilizing diode D1, the operational amplifier A1 adopts LM324, as shown in FIG. 1, a 12v power supply is connected with a resistor R4, the other end of the resistor R4 is connected with the cathode of a voltage-stabilizing diode D1 and a resistor R5, the anode of the voltage-stabilizing diode D1 is grounded, 12v voltage enables the voltage-stabilizing diode D1 to be conducted, a voltage-stabilizing diode D1 is used for maintaining the voltage of the positive input end of the operational amplifier A1 to be stable and used as a reference voltage, and the other end of the resistor R5 is connected with the positive input end of the operational amplifier A1; the reverse input end of the operational amplifier A1 is connected with the resistor R2, and the other end of the resistor R2 is grounded; the output end of the operational amplifier A1 is connected with one end of a resistor R3, and a resistor R1 is connected between one end of a resistor R3 and the reverse input end of the operational amplifier A1 and used for negative feedback; the resistor R6 is connected between the other end of the resistor R3 and the positive input end of the operational amplifier A1, and the current flowing through the resistor R3 is constant.
The total resistance value of the ignition device with N ignition devices connected in parallel is R/N, when any ignition device is damaged, the total resistance value can change, and because the input current of the point A is constant, the input current changes along with the data of the ignition device, and the electromotive force of the point A changes.
The single chip microcomputer U1 selects STM32F103RB model, the VDD pin of the single chip microcomputer U1 is connected with VCC voltage, the PA2 pin of the single chip microcomputer U1 is connected with point A for collecting electromotive force of point A, the PC2 pin of the single chip microcomputer U1 is connected with an LCD display screen, the electromotive force is different when the number of the ignition tools is changed, and data input by the single chip microcomputer can be changed and displayed on the LCD display screen.
As shown in fig. 3, the single chip U1 is connected to the download interface P2, and as shown in the figure, is connected to pins PA13 and PA14 of the single chip U1, and is respectively used for writing data and clock data into the single chip U1, including: the relationship between the resistance R and the number N of the ignition device and the total resistance, and the relationship between the total resistance after the ignition device is damaged.
This patent application, a plurality of igniters that have resistance R are parallelly connected, and introduce invariable electric current through constant current source circuit, and with the electromotive force feedback of A acquisition point to the ADC conversion pin of singlechip, when having the damage in parallelly connected igniters, the change of quantity leads to the electromotive force change of A point, handle through the singlechip and judge how many thunder can normally work, then show by LCD, this patent simple structure, the figure of the thunder of effective monitoring normally work.
Finally, it should be noted that: the above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the spirit and scope of the invention.
Claims (7)
1. A circuit for detecting performance of a lightning comprising: the device comprises a single chip microcomputer U1, N ignition devices, a constant current source circuit, a power supply conversion circuit and an LCD display screen, wherein the power supply conversion circuit is connected with the single chip microcomputer U1 and used for providing working voltage for the single chip microcomputer U1; the method is characterized in that: in the N ignition devices, each ignition device resistor is R, the N ignition devices are connected in parallel, one end of each ignition device is grounded, the other end of each ignition device resistor is connected with the output end of the constant current source circuit and the single chip microcomputer U1, the single chip microcomputer U1 is connected with the LCD display screen, and the single chip microcomputer U1 collects electromotive force of the other end of each parallel ignition device and displays the electromotive force on the LCD display screen.
2. The circuit for detecting lightning performance of claim 1, characterized in that: the constant current source circuit includes: the operational amplifier A1 and the voltage-stabilizing diode D1, the 12v power supply is connected with the resistor R4, the other end of the resistor R4 is connected with the cathode of the voltage-stabilizing diode D1 and the resistor R5, the anode of the voltage-stabilizing diode D1 is grounded, and the other end of the resistor R5 is connected with the positive input end of the operational amplifier A1; the reverse input end of the operational amplifier A1 is connected with the resistor R2, and the other end of the resistor R2 is grounded; the output end of the operational amplifier A1 is connected with one end of a resistor R3, a resistor R1 is connected between one end of a resistor R3 and the reverse input end of the operational amplifier A1, and a resistor R6 is connected between the other end of a resistor R3 and the forward input end of the operational amplifier A1.
3. The circuit for detecting lightning performance of claim 2, characterized in that: the other end of the N ignition devices is connected with the other end of the resistor R3, and the common point is the point A.
4. The circuit for detecting lightning performance of claim 2, characterized in that: the power conversion circuit adopts a conversion chip L7805, and a Vin pin and a GND pin of the conversion chip are connected with a socket P1 and used for introducing power supply voltage; VIN voltage is input to a Vin pin of the conversion chip, and converted VCC voltage is output to a Vout pin of the conversion chip.
5. The circuit for detecting lightning performance of claim 4, characterized in that: a decoupling capacitor C4 is connected between the Vin pin and the GND pin of the conversion chip, the output pin of the conversion chip Vout is connected with one end of a capacitor C3, and the other end of the capacitor C3 is grounded.
6. The circuit for detecting lightning performance of claim 4, characterized in that: STM32F103RB model is selected as the singlechip U1, the VDD pin of singlechip U1 connects VCC voltage, the PA2 pin of singlechip U1 connects the other end of resistance R3, the PC2 pin of singlechip U1 connects the LCD display screen.
7. The circuit for detecting lightning performance of claim 6, characterized in that: the single chip microcomputer U1 is connected with a download interface P2, and the download interface P2 is used for writing programming data into the single chip microcomputer U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023325347.3U CN214122349U (en) | 2020-12-31 | 2020-12-31 | Circuit for detecting thunder performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023325347.3U CN214122349U (en) | 2020-12-31 | 2020-12-31 | Circuit for detecting thunder performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214122349U true CN214122349U (en) | 2021-09-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023325347.3U Active CN214122349U (en) | 2020-12-31 | 2020-12-31 | Circuit for detecting thunder performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214122349U (en) |
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2020
- 2020-12-31 CN CN202023325347.3U patent/CN214122349U/en active Active
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