Excitation signal detection circuit of electric ignition ammunition

Abstract

The invention relates to the technical field of electric ignition ammunition ignition, and discloses an electric ignition ammunition excitation signal detection circuit which comprises an excitation signal generation module, a reference signal comparison module, an excitation signal triggering module, an excitation signal detection module and an excitation result display module. The characteristic that the excitation signal triggering module is used as a basic circuit and is recovered from a second triggering state to a first triggering state at regular time is matched with an electric ignition excitation signal generated by the excitation signal generation module to circularly detect the excited state and the to-be-excited state of ammunition; therefore, whether the electric ignition ammunition successfully completes the ignition action or not is automatically detected, and the purposes of improving the detection efficiency and reducing the detection cost are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of ignition of electric ignition ammunition, and in particular to an excitation signal detection circuit of electric ignition ammunition. Background Art

[0002] In the process of developing and producing electric ignition devices for electric ignition ammunition, it is necessary to detect the output ignition signal of the electric ignition device to ensure that its output current and duration meet the design requirements. The traditional method is to manually detect the output ignition signal of the electric ignition device. During the detection process, a series of instruments and equipment such as oscilloscopes, terminal blocks, ammeters, power resistors, etc. are required, or each detection requires the consumption of an ignition chip or other similar consumables, which is time-consuming, labor-intensive and costly. Summary of the invention

[0003] In view of this, the present invention provides an excitation signal detection circuit for electrically ignited ammunition to solve the problem that manually detecting the output ignition signal of the electric ignition device results in high cost and is time-consuming.

[0004] According to a first aspect, an embodiment of the present disclosure provides an excitation signal detection circuit for electrically ignited ammunition, comprising:

[0005] An excitation signal generating module, used for generating an electric ignition excitation signal for ammunition;

[0006] A reference signal comparison module, used to generate a target reference signal based on the electric ignition excitation signal, compare the target reference signal with a preset reference signal, and output a level comparison result;

[0007] An excitation signal trigger module, configured to generate a first trigger signal in a first trigger state or a second trigger signal in a second trigger state based on the level comparison result, and when the trigger target reference signal is less than a preset reference signal in the second trigger state, the excitation signal trigger module is restored from the second trigger state to the first trigger state;

[0008] an excitation signal detection module, configured to detect that the ammunition is in a ready-to-excite state in a first trigger state based on a first trigger signal, and to detect that the ammunition is in an excited state in a second trigger state based on a second trigger signal;

[0009] The excitation result display module is used to display the result to be excited based on the state to be excited, or to display the result already excited based on the state to be excited.

[0010] The disclosed embodiment utilizes an excitation signal trigger module as a basic circuit, and has the characteristic of periodically recovering from the second trigger state to the first trigger state, in conjunction with the electric ignition excitation signal generated by the excitation signal generating module, to cyclically detect the excited state and the to-be-excited state of the ammunition, thereby realizing automatic detection of whether the electrically ignitable ammunition has successfully completed the ignition action, so as to achieve the purpose of improving detection efficiency and reducing detection costs.

[0011] In some optional embodiments, the excitation signal detection module includes: a relay, a first switching device, a halogen lamp and an optocoupler device, wherein the first switching device is used to drive the relay to operate, the halogen lamp is used to display an indication result corresponding to the excitation action based on the electric ignition excitation signal, and the optocoupler device is used to detect the luminous intensity and luminous time of the halogen lamp.

[0012] The disclosed embodiment uses an excitation signal detection module to automatically detect the current excitation state of ammunition in a first trigger state and a second trigger state corresponding to an excitation signal trigger module, respectively, without the need for manual detection using different consumables, thereby reducing detection time and reducing detection costs.

[0013] In some optional embodiments, the reference signal comparison module includes: a comparator, a first capacitor, a first adjustable resistor and a second switching device, wherein the first capacitor, the first adjustable resistor and the second switching device are used to generate a target reference signal, and the comparator is used to generate a preset reference signal, and compare the target reference signal with the preset reference signal, and output a level comparison result.

[0014] The disclosed embodiment uses a reference signal comparison module to generate a target reference signal based on an electric ignition excitation signal, compares the target reference signal with a preset reference signal, outputs a level comparison result, and controls the excitation signal trigger module to be in different trigger states.

[0015] In some optional embodiments, the excitation signal trigger module includes: a monostable trigger, which is respectively connected to the reference signal comparison module, the excitation result display module and the excitation signal generation module.

[0016] The disclosed embodiment connects the reference signal comparison module, the excitation result display module and the excitation signal generation module respectively through the monostable trigger in the excitation signal trigger module, so as to utilize the basic characteristics of the monostable trigger to realize automatic detection of the current state of the ammunition.

[0017] In some optional implementations, the first trigger state is a stable state of the monostable trigger, and the second trigger state is an unstable trigger state of the monostable trigger.

[0018] The disclosed embodiment utilizes the first trigger state and the second trigger state of the monostable trigger to detect the current state of the ammunition.

[0019] In some optional embodiments, the excitation signal generating module is an electric ignition device of the ammunition, and the excitation signal generating module is connected to the excitation signal detecting module.

[0020] The disclosed embodiment uses the electric ignition device as the detected object, and detects whether the electric ignition device has successfully ignited the ammunition or has failed to ignite the ammunition through the excitation signal detection module.

[0021] In some optional embodiments, when the excitation signal triggering module is in the first triggering state, the excitation signal generating module triggers the first switching device to turn off, thereby controlling the relay to be in a closed state, and detecting that the ammunition is in a ready-to-be-excited state.

[0022] The embodiment of the present disclosure triggers the first switch device to turn off in the first trigger state of the excitation signal trigger module, thereby controlling the relay to close, so as to detect that the ammunition is in the ready-to-excite state.

[0023] In some optional embodiments, when the excitation signal triggering module is in the second triggering state, the excitation signal generating module triggers the first switching device to turn on, thereby controlling the relay to be in the off state, and detecting that the ammunition is in the excited state.

[0024] The embodiment of the present disclosure triggers the first switch device to turn on in the second trigger state of the excitation signal trigger module, thereby controlling the relay to turn off, so as to detect that the ammunition is in the excited state.

[0025] In some optional embodiments, the excitation result display module includes: a second adjustable resistor, a light emitting diode, a second capacitor, a buzzer and a second switching device, wherein the second adjustable resistor and the second capacitor are used to adjust the open circuit time of the relay, and the light emitting diode and the buzzer display the result to be excited or the result that has been excited.

[0026] The disclosed embodiment facilitates prompting of the current firing result of the ammunition through the firing result display module.

[0027] In some optional embodiments, the electric ignition excitation signal includes a first signal and a second signal, the first signal indicating that the electric ignition excitation signal is not applied to the excitation signal detection module, and the second signal indicating that the electric ignition excitation signal is applied to the excitation signal detection module.

[0028] The first signal and the second signal of the embodiment of the present disclosure realize the detection of the ammunition excited by the excitation signal generating module. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 is a schematic structural diagram of an excitation signal detection circuit of an electrically ignited ammunition according to an embodiment of the present invention;

[0031] Figure 2 The figure is a schematic diagram of the working timing waveform of the excitation signal detection circuit of the electrically ignited ammunition according to the embodiment of the present invention. DETAILED DESCRIPTION

[0032] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] According to an embodiment of the present invention, an embodiment of an excitation signal detection circuit for electrically ignited ammunition is provided, such as Figure 1 As shown, it includes: an excitation signal generating module 11, a reference signal comparing module 12, an excitation signal triggering module 13, an excitation signal detecting module 14 and an excitation result display module 15.

[0038] Among them, Figure 1 In the invention, an excitation signal generating module 11 is used to generate an electric ignition excitation signal of the ammunition; a reference signal comparing module 12 is used to generate a target reference signal based on the electric ignition excitation signal, and compare the target reference signal with a preset reference signal to output a level comparison result; an excitation signal triggering module 13 is used to generate a first trigger signal in a first trigger state, or generate a second trigger signal in a second trigger state based on the level comparison result, and trigger the target reference signal in the second trigger state to be less than the preset reference signal, so that the excitation signal triggering module 13 is restored from the second trigger state to the first trigger state; an excitation signal detecting module 14 is used to detect that the ammunition is in a waiting state in the first trigger state based on the first trigger signal, and detect that the ammunition is in an excited state in the second trigger state based on the second trigger signal; an excitation result displaying module 15 is used to display the waiting result based on the waiting state, or display the excited result based on the waiting state.

[0039] The disclosed embodiment utilizes an excitation signal trigger module as a basic circuit, and has the characteristic of periodically recovering from the second trigger state to the first trigger state, in conjunction with the electric ignition excitation signal generated by the excitation signal generating module, to cyclically detect the excited state and the to-be-excited state of the ammunition, thereby realizing automatic detection of whether the electrically ignitable ammunition has successfully completed the ignition action, so as to achieve the purpose of improving detection efficiency and reducing detection costs.

[0040] In some optional embodiments, Figure 1 In the figure, the excitation signal detection module 14 includes: a relay, a first switching device, a halogen lamp and an optocoupler device, wherein the first switching device is used to drive the relay to work, the halogen lamp is used to display the indication result corresponding to the excitation action based on the electric ignition excitation signal, and the optocoupler device is used to detect the luminous intensity and luminous time of the halogen lamp.

[0041] In a specific example, the excitation signal detection module 14 further includes: a fifth capacitor and a ninth resistor.

[0042] Specifically, in Figure 1 In the embodiment, the relay is K1, the first switch device is Q1, the halogen lamp is DS1, the optocoupler device is U3, and the fifth capacitor is C1. The normally closed contact 2 of the relay K1 is used to connect with the electric ignition excitation signal VfireN, the normally closed contact 2 of the relay K1 is used to connect with the halogen lamp DS1, the normally closed contact 2 of the relay K1 is connected with the optocoupler device U3, one end of the halogen lamp DS1 is connected with the electric ignition excitation signal VfireP, and the other end of the halogen lamp DS1 is connected with the optocoupler device U3 through the ninth resistor R11. The fifth capacitor C1 is connected in parallel between pin 1 and pin 5 of the relay K1. One end of the optocoupler device U3 is connected with the power supply VCC, and the other end of the optocoupler device U3 is connected with the reference signal comparison module 12.

[0043] Further, in Figure 1 In the invention, a halogen lamp DS1 or other high-power light-emitting device is used to simulate the ignition device of the ammunition and provide the ignition process status display. The impedance of the halogen lamp DS1 is selected to be close to the model of the ignition device. A relay K1 is used, and its long-closed switch is connected in series with the above-mentioned halogen lamp or other high-power light-emitting device. Before ignition, the series circuit is in the on state, which can simulate the ammunition in the waiting state (in-position state). An optical coupler device U3 is connected in parallel with the above-mentioned halogen lamp DS1 to detect the ignition signal.

[0044] The disclosed embodiment uses an excitation signal detection module to automatically detect the current excitation state of ammunition in a first trigger state and a second trigger state corresponding to the excitation signal trigger module, without the need for manual detection using different consumables, thereby reducing detection time and reducing detection costs.

[0045] In some optional embodiments, Figure 1 In the reference signal comparison module 12, it includes: a comparator, a first capacitor and a first adjustable resistor, wherein the first capacitor and the first adjustable resistor are used to generate a target reference signal. The comparator is used to generate a preset reference signal, and compare the target reference signal with the preset reference signal, and output a level comparison result.

[0046] Specifically, in Figure 1 In the embodiment, the comparator is U2A, the first capacitor is C5 and the first adjustable resistor is R7. One end of the first adjustable resistor R7 is connected to the first capacitor C5.

[0047] In a specific example, the reference signal comparison module 12 further includes: a first resistor, a second resistor, a second capacitor and a third resistor.

[0048] Specifically, in Figure 1In the embodiment, the first resistor is R6, the second resistor is R8, the fourth capacitor is C4, and the third resistor is R9. The in-phase terminal of the comparator U2A is connected to the first resistor R6, the second resistor R8 and the fourth capacitor C4, the inverting terminal of the comparator U2A is connected to the third resistor R9, the second resistor R8 is connected in parallel with the fourth capacitor C4. The third resistor R9 is connected in parallel with the first capacitor C5.

[0049] Further, in Figure 1 In the embodiment, the output end of the optocoupler device U3 drives the adjustable RC charging branch composed of the first adjustable resistor R7 and the first capacitor C5, which is used to collect the ignition duration. The above-mentioned adjustable RC charging branch can set different expected ignition durations by adjusting the size of the first adjustable resistor R7, that is, the first adjustable resistor can adjust the ignition time of the ammunition. The target reference signal (voltage Vin) on the first capacitor C5 of the above-mentioned adjustable RC charging branch is connected to the inverting end of a comparator U2A. When the above-mentioned ignition duration reaches the expected value, the target reference signal (voltage Vin) exceeds the preset reference signal (voltage Vref) at the positive end of the comparator, so that the comparator Vout1 outputs a low level. When the above-mentioned ignition duration does not reach the expected value, the target reference signal (voltage Vin) does not exceed the preset reference signal (voltage Vref) at the positive end of the comparator, so that the comparator Vout1 outputs a high level.

[0050] The disclosed embodiment uses a reference signal comparison module to generate a target reference signal based on an electric ignition excitation signal, compares the target reference signal with a preset reference signal, outputs a level comparison result, and controls the excitation signal trigger module to be in different trigger states.

[0051] In some optional embodiments, Figure 1 In the embodiment, the excitation signal trigger module 13 includes a monostable trigger, which is respectively connected to the reference signal comparison module 12, the excitation result display module 15 and the excitation signal generation module 11. The first trigger state is the stable state of the monostable trigger, and the second trigger state is the unstable trigger state of the monostable trigger.

[0052] Specifically, in Figure 1 In the embodiment, the monostable trigger is a 555 timer U1, which is connected to the reference signal comparison module 12, the excitation result display module 15 and the excitation signal generation module 11 respectively.

[0053] In a specific example, the excitation signal triggering module 13 further includes: a fourth resistor, a fifth resistor and a third capacitor.

[0054] Specifically, in Figure 1In the embodiment, the fourth resistor is R3, the third capacitor is C3, and the fifth resistor is R10. One end of the fourth resistor R3 is connected to pin 2 of the monostable trigger, the other end of the fourth resistor R3 is connected to the power supply terminal VCC of the monostable trigger, the third capacitor C3 is connected to pin 5 of the monostable trigger, pin 4 of the monostable trigger is connected to the power supply terminal VCC, pin 6 of the monostable trigger is connected to the first adjustable resistor R1, pin 8 of the monostable trigger is connected to the power supply terminal VCC, pin 7 of the monostable trigger is connected to the first adjustable resistor R1, and pin 3 of the monostable trigger is connected to the first switching device Q1 through the fifth resistor R10.

[0055] The excitation signal trigger module in the embodiment of the present disclosure is a monostable trigger, which utilizes the inherent characteristics of the monostable trigger, namely the ability to switch between a stable state and an unstable trigger state, to automatically detect the current state of the ammunition in these two different states.

[0056] In some optional embodiments, Figure 1 In the embodiment, the excitation signal generating module 11 is an electric ignition device of the ammunition, and the excitation signal generating module 11 is connected to the excitation signal detecting module 14 .

[0057] Specifically, in Figure 1 In the embodiment, the electric ignition device of the ammunition is used to ignite the ammunition, and the excitation signal generating module 11 is connected to the excitation signal detecting module 14, and the excitation signal detecting module 14 detects whether the ignition device of the ammunition has ignited or not.

[0058] In some optional embodiments, Figure 1 In the embodiment, when the excitation signal triggering module 13 is in the first triggering state, the excitation signal generating module 11 triggers the first switching device to turn off, thereby controlling the relay to be in the closed state, and detecting that the ammunition is in the excited state.

[0059] Specifically, the first trigger state is the steady state of the monostable trigger. When the monostable trigger U1 is in the steady state and the 3-pin of the monostable trigger U1 outputs a low level, the first switch device Q1 is turned off, the relay K1 is in the closed state, and the detection ammunition is in the ready-to-be-triggered state. Figure 1 In the process, the first capacitor C5 is quickly charged to a high potential through the second switch device Q2, Vin is higher than Vref, and the comparator U2A cooperates with the pull-up fourth resistor R3 to output a high level, which enters as the input signal of the monostable trigger U1, and the 3-pin of the monostable trigger U1 outputs a low level, the first switch device Q1 is turned off, the relay K1 is in a closed state, and the detection ammunition is in a ready-to-be-excited state.

[0060] In some optional embodiments, Figure 1In the embodiment, when the excitation signal triggering module 13 is in the second triggering state, the excitation signal generating module 11 triggers the first switching device to turn on, thereby controlling the relay to be in the off state, and detecting that the ammunition is in the ready-to-be-excited state.

[0061] Specifically, the second trigger state is the unstable trigger state of the monostable trigger. When the monostable trigger U1 is in the unstable trigger state, when the 3 pin of the monostable trigger U1 outputs a high level, the first switch device Q1 is turned on, the relay K1 is in the off state, and the detection ammunition is in the excited state. Figure 1 In the process, the first capacitor C5 is quickly discharged to a low potential through the second switch device Q2, Vin is lower than Vref, and the comparator U2A cooperates with the pull-up fourth resistor R3 to output a low level, and the high level enters as the input signal of the monostable trigger U1. Pin 3 of the monostable trigger U1 outputs a high level, and the first switch device Q1 is turned on, the relay K1 is in the off state, and the detection ammunition is in the excited state.

[0062] In some optional embodiments, Figure 1 The excitation result display module 15 includes: a second adjustable resistor, a light emitting diode, a second capacitor, a buzzer and a second switch device, wherein the second adjustable resistor and the second capacitor are used to adjust the open circuit time of the relay, and the light emitting diode and the buzzer display the result to be excited or the result already excited. The second adjustable resistor is also used to adjust the duration of successful ignition of the ammunition.

[0063] Specifically, in Figure 1 In the embodiment, the second adjustable resistor is R1, the light emitting diode is D2, the second capacitor is C2, the buzzer is LS1, and the second switch device is Q2. Figure 2 In the embodiment, the second capacitor C2 is connected to the second adjustable resistor R1.

[0064] In a specific example, the excitation result display module 15 further includes: a sixth resistor, a seventh resistor and an eighth resistor.

[0065] Specifically, in Figure 1 In the figure, the sixth resistor is R2, the seventh resistor is R5, and the eighth resistor is R4. The sixth resistor R2, the seventh resistor R5, and the second capacitor C2 are connected in parallel. The seventh resistor R5 is connected in series with the light-emitting diode D2. One end of the buzzer LS1 is connected to the seventh resistor R5, and the other end of the buzzer LS1 is connected to the light-emitting diode D2. The seventh resistor R5 is connected to the first switching device Q1 through the eighth resistor R4.

[0066] exist Figure 1In the process, the low level Vout1 generated by the comparator U2A is input to the trigger end of the monostable trigger U1, and the monostable trigger U1 outputs a high level Vout2, driving the light-emitting diode D2 to emit light, and a buzzer LS1 to sound, indicating that the ignition is completed.

[0067] Correspondingly, in Figure 1 In the embodiment, the high level Vout1 generated by the comparator U2A is input to the trigger end of the monostable trigger U1, and the monostable trigger U1 outputs the low level Vout2, which cannot drive the light-emitting diode D2 to emit light (the light-emitting diode D2 is off) and the buzzer LS1 to sound (the buzzer LS1 does not sound), to indicate that the ignition is not completed.

[0068] Further, in Figure 1 The high level Vout2 output by the monostable trigger U1 mentioned above also drives the N-type field effect transistor Q1 (the first switch device Q1) to turn on, thereby turning off the relay K1. The series circuit formed by the relay K1 and the halogen lamp DS1 provides an "open circuit" signal to the electric ignition device under test, so that the electric ignition device under test can detect the state of successful ignition of the ammunition (excited state).

[0069] Accordingly, in Figure 1 The low level Vout2 output by the monostable trigger U1 mentioned above also drives the N-type field effect transistor Q1 (the first switch device Q1) to turn off, thereby closing the relay K1. The series circuit formed by the relay K1 and the halogen lamp DS1 provides a "conduction" signal to the electric ignition device under test, so that the electric ignition device under test can detect the state where the ammunition has not been successfully ignited (the waiting state).

[0070] In some optional embodiments, the electric ignition excitation signal includes a first signal and a second signal, the first signal indicating that the electric ignition excitation signal is not applied to the excitation signal generating module, and the second signal indicating that the electric ignition excitation signal is applied to the excitation signal generating module.

[0071] Specifically, in Figure 1 In the embodiment, when the electric ignition excitation signal is not applied to Vfire1 and Vfire2 of the excitation signal generating module 11, the electric ignition excitation signal can be the first signal, the excitation signal triggering module 13 is in a steady state, the halogen lamp LS1 is off, there is no input signal at the input end of the optocoupler device U3, the third resistor R9 consumes the dark current of U3, and the first capacitor C5 is at 0 potential.

[0072] Accordingly, in Figure 1When the electric ignition excitation signal is applied to Vfire1 and Vfire2 of the excitation signal generating module 11, the electric ignition excitation signal can be the second signal, the excitation signal triggering module 13 is in an unstable triggering state, the halogen lamp LS1 is lit, and the input end of the optocoupler device U3 is driven. Because the resistance of the third resistor R9 is much larger than the first adjustable resistor R7, the first capacitor C5 is charged to a high potential.

[0073] At the same time, the excitation signal detection circuit of the electric ignition ammunition in the embodiment of the present disclosure has the following advantages: Figure 1 In the process, the monostable trigger U1 outputs a high level Vout2, and at the same time drives the N-type field effect transistor Q2 (the second switch device) to conduct, so that the first capacitor C5 is discharged, and Vin is restored to 0V, and the comparator U2A is restored to the state before the action. When the monostable trigger U1 outputs a high level, the charging circuit composed of the second adjustable resistor R1 and the second capacitor C2 starts to charge. When the voltage Vthr on the second capacitor C2 reaches 2 / 3VCC, the monostable trigger U1 outputs a low level, the 7-pin of the monostable trigger U1 is in an open-drain state, and the monostable trigger U1 returns to a steady state.

[0074] exist Figure 1 In the above, the second adjustable resistor R1 and the second capacitor C2 form a charging circuit. The duration of the monostable trigger U1 maintaining the output high level non-stable state can be set by adjusting the resistance value of the second adjustable resistor R1 to adapt the timing of the tested electrical ignition device to detect successful ignition.

[0075] In a specific example, the embodiment of the present disclosure takes 12V power supply as an example in actual application, the first adjustable resistor R7 is adjusted to 1K, the first adjustable resistor R1 is adjusted to 50K, and the reference voltage Vref connected to the in-phase terminal of the comparator U2A is divided into 6V by the first resistor R6 and the second resistor R8.

[0076] At T0: the ignition signal is loaded onto VfireP and VfireN, and the halogen lamp DS1 is lit. If the voltage and current of VfireP-VfireN are large enough, while the halogen lamp DS1 is lit, its voltage can still drive the optocoupler device U3 to work, and the first capacitor C5 starts to charge.

[0077] At time T1 (calculated according to the RC charging formula, about 1 millisecond), the voltage Vin on the first capacitor C5 reaches Vref (6V), and Vout1 of the monostable trigger U1 outputs a low level.

[0078] T1+ moment (T1 is delayed by the chip action): Vout2 of the monostable trigger U1 outputs a high level, the light-emitting diode D2 starts to emit light, the buzzer LS1 starts to sound, the relay K1 is disconnected, the halogen lamp DS1 goes out, and the ignition device of the tested point can detect successful ignition from this moment until T3 moment.

[0079] Time T2: The ignition signal output by the electric ignition device is turned off after the set time.

[0080] Time T3: (calculated according to the RC charging formula, about 1.2 seconds): the voltage Vthr on the second capacitor C2 is charged to 8V (VCC*2 / 3), the monostable trigger U1 returns to steady state, Vout2 becomes a low level 0V, the N-type field effect transistor Q1 (the first switching device) is turned off, the relay K1 resumes conduction, and the entire circuit returns to the initial state, so that the next round of testing can be carried out.

[0081] In summary, the excitation signal detection circuit excitation signal generating module of the electrically ignitable ammunition in the embodiment of the present disclosure is used to generate an electric ignition excitation signal for the ammunition; the reference signal comparing module is used to generate a target reference signal based on the electric ignition excitation signal, and compare the target reference signal with a preset reference signal to output a level comparison result; the excitation signal triggering module is used to generate a first trigger signal in a first trigger state, or generate a second trigger signal in a second trigger state based on the level comparison result, and trigger the target reference signal in the second trigger state to be less than the preset reference signal, so that the excitation signal triggering module is restored from the second trigger state to the first trigger state; the excitation signal detection module is used to detect that the ammunition is in a waiting state in the first trigger state based on the first trigger signal, and detect that the ammunition is in an excited state in the second trigger state based on the second trigger signal; the excitation result display module is used to display the waiting result based on the waiting state, or display the excited result based on the waiting state. The present invention utilizes an excitation signal trigger module as a basic circuit, and has the characteristic of periodically recovering from a second trigger state to a first trigger state, and cooperates with an electric ignition excitation signal generated by an excitation signal generating module to cyclically detect the excited state and the to-be-excited state of ammunition, thereby realizing automatic detection of whether the electric ignition ammunition has successfully completed the ignition action, so as to achieve the purpose of improving detection efficiency and reducing detection costs. Therefore, it is low in price, easy to implement, and convenient to adjust, and can realize automatic detection of the electric ignition device of the ammunition.

[0082] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. An excitation signal detection circuit for electrically ignited ammunition, characterized in that: include: An excitation signal generating module, used for generating an electric ignition excitation signal for ammunition; A reference signal comparison module, used to generate a target reference signal based on the electric ignition excitation signal, compare the target reference signal with a preset reference signal, and output a level comparison result; an excitation signal trigger module, configured to generate a first trigger signal in a first trigger state, or generate a second trigger signal in a second trigger state based on the level comparison result, and trigger the target reference signal to be less than the preset reference signal in the second trigger state, so that the excitation signal trigger module is restored from the second trigger state to the first trigger state; an excitation signal detection module, configured to detect that the ammunition is in a ready-to-excite state in the first trigger state based on the first trigger signal, and to detect that the ammunition is in an excited state in the second trigger state based on the second trigger signal; The excitation result display module is used to display the to-be-excited result based on the to-be-excited state, or to display the already-excited result based on the to-be-excited state.

2. The excitation signal detection circuit of the electrically ignited ammunition according to claim 1, characterized in that: The excitation signal detection module includes: a relay, a first switching device, a halogen lamp and an optocoupler device, wherein the first switching device is used to drive the relay to operate, the halogen lamp is used to display an indication result corresponding to the excitation action based on the electric ignition excitation signal, and the optocoupler device is used to detect the luminous intensity and luminous time of the halogen lamp.

3. The excitation signal detection circuit of the electrically ignited ammunition according to claim 1, characterized in that: The reference signal comparison module includes: a comparator, a first capacitor, a first adjustable resistor and a second switch device, wherein the first capacitor, the first adjustable resistor and the second switch device are used to generate the target reference signal, and the comparator is used to generate a preset reference signal, and compare the target reference signal with the preset reference signal, and output a level comparison result.

4. The excitation signal detection circuit of the electrically ignited ammunition according to any one of claims 1 to 3, characterized in that: The excitation signal triggering module comprises: a monostable trigger, which is respectively connected to the reference signal comparing module, the excitation result display module and the excitation signal generating module.

5. The excitation signal detection circuit of the electrically ignited ammunition according to claim 4, characterized in that: The first trigger state is a stable state of the monostable trigger, and the second trigger state is an unstable trigger state of the monostable trigger.

6. The excitation signal detection circuit of the electrically ignited ammunition according to claim 1, characterized in that: The excitation signal generating module is an electric ignition device of ammunition, and the excitation signal generating module is connected to the excitation signal detecting module.

7. The excitation signal detection circuit of the electrically ignited ammunition according to claim 2, characterized in that: When the excitation signal triggering module is in the first triggering state, the excitation signal generating module triggers the first switch device to turn off, thereby controlling the relay to be in the closed state, and detecting that the ammunition is in the ready-to-be-excited state.

8. The excitation signal detection circuit of the electrically ignited ammunition according to claim 2, characterized in that: When the excitation signal triggering module is in the second triggering state, the excitation signal generating module triggers the first switch device to turn on, thereby controlling the relay to be in the off state, and detecting that the ammunition is in the excited state.

9. The excitation signal detection circuit of the electrically ignited ammunition according to claim 2, characterized in that: The excitation result display module includes: a second adjustable resistor, a light emitting diode, a second capacitor, a buzzer and a second switch device, wherein the second adjustable resistor and the second capacitor are used to adjust the open circuit time of the relay, and the light emitting diode and the buzzer display the result to be excited or the excited result.

10. The excitation signal detection circuit of the electrically ignited ammunition according to claim 1, characterized in that: The electric ignition excitation signal includes a first signal and a second signal, wherein the first signal indicates that the electric ignition excitation signal is not applied to the excitation signal detection module, and the second signal indicates that the electric ignition excitation signal is applied to the excitation signal detection module.

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