CN210714881U - Test circuit for ignition tube safety control module - Google Patents
Test circuit for ignition tube safety control module Download PDFInfo
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- CN210714881U CN210714881U CN201921199897.XU CN201921199897U CN210714881U CN 210714881 U CN210714881 U CN 210714881U CN 201921199897 U CN201921199897 U CN 201921199897U CN 210714881 U CN210714881 U CN 210714881U
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Abstract
The utility model discloses a test circuit for fire tube safety control module, include: the device comprises a pulse signal generating circuit, a signal isolating circuit, a control switch circuit, an output indicating circuit and an interface circuit. The test circuit generates pulse waves with specific frequency through a PWM chip and a potentiometer, receives level signals through a switch and a light emitting diode engine, simulates ignition instructions such as first solution, second solution and third solution, and state signals such as bridge foil on-off of the ignition tube and capacitance voltage signals of a high-voltage ignition power supply, and achieves the test function of the ignition tube safety control module. The utility model discloses avoided high cost and the potential safety hazard that the real engine of direct use, ignition pipe and high voltage power supply produced, can reuse, improved factor of safety.
Description
Technical Field
The utility model belongs to the technical field of electric detonator safety control, a test circuit is related to, specific theory relates to a test circuit for firing tube safety control module.
Background
In the ignition process of the solid rocket engine, a safety control module is required to safely control the ignition flow of the electric detonation type ignition tube, and a test circuit for simulating the ignition flow and instructions of the engine is required for testing the safety control module.
In the ignition process of the electric detonation type ignition tube, the safety control module not only needs ignition instruction signals such as first solution, second solution and third solution, but also needs to detect the on-off of a bridge foil of the ignition tube and the capacitance voltage of a high-voltage ignition power supply.
When the safety control module is tested, the direct use of the real engine, the ignition tube and the high-voltage power supply not only can generate direct and high product cost, but also can generate potential safety hazard due to indirect equipment loss cost.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a test circuit for firing tube safety control module provides a low-cost, safe and reliable's test circuit for electric detonating formula firing tube safety control module.
In order to solve the above problem, the technical scheme of the utility model is that: a test circuit for a squib safety control module, comprising: the device comprises a pulse signal generating circuit, a signal isolating circuit, a control switch circuit, an output indicating circuit and an interface circuit.
The input end of the pulse signal generating circuit is coupled with the first output end of the interface circuit, and the output end of the pulse signal generating circuit is coupled with the input end of the signal isolating circuit;
the signal isolation circuit is coupled with the pulse signal generation circuit, the interface circuit and the control switch circuit, the output end of the pulse signal generation circuit is coupled with the first input end of the signal isolation circuit, the second output end of the interface circuit is coupled with the second input end of the signal isolation circuit, the first input end of the interface circuit is coupled with the output end of the signal isolation circuit, and the first output end of the control switch circuit is coupled with the third input end of the signal isolation circuit;
the control switch circuit is coupled with the signal isolation circuit and the interface circuit, a third input end of the signal isolation circuit is coupled with a first output end of the control switch circuit, and a second input end and a third input end of the interface circuit are respectively coupled with a second output end and a third output end of the control switch circuit;
the output indicating circuit is coupled with the interface circuit, and a third output end, a fourth output end, a fifth output end and a sixth output end of the interface circuit are respectively coupled with the first input end, the second input end, the third input end and the fourth input end of the output indicating circuit.
The pulse signal generating circuit comprises a PWM chip, a first potentiometer, a first capacitor and a second potentiometer;
the PWM chip generates a pulse signal;
the first potentiometer and the first capacitor control the frequency of the pulse signal;
the second potentiometer controls a duty ratio of the pulse signal.
The test circuit for the ignition tube safety control module further comprises: and the current limiting resistor is coupled between the pulse signal generating circuit and the signal isolating circuit.
The current limiting resistor is matched with the signal isolation circuit, and the signal isolation circuit is guaranteed to work in the optimal state.
The signal isolation circuit comprises an optical coupling chip;
and the anode and the cathode of the optical coupling chip are used as control signals to control the conduction of signals between the emission set and the collector of the optical coupling chip.
The test circuit for the ignition tube safety control module further comprises: a pull-up resistor coupled between the signal isolation circuit and the interface circuit.
The pull-up resistor is coupled between the second output end of the interface circuit and the output end of the signal isolation circuit, and the first input end of the interface circuit is ensured to be at a determined high level.
The control switch circuit comprises a first switch, a second switch and a third switch;
the first switch is coupled to the third input end of the signal isolation circuit and is coupled with the first input end of the interface circuit through the output end of the signal isolation circuit;
the second switch is coupled to a second input of the interface circuit;
the third switch is coupled to a third input of the interface circuit.
The output indicating circuit comprises a first light emitting diode, a second light emitting diode, a third light emitting diode and a fourth light emitting diode;
the first light emitting diode is coupled with a third output end of the interface circuit;
the second light emitting diode is coupled with a fourth output end of the interface circuit;
the third light emitting diode is coupled with a fifth output end of the interface circuit;
the fourth light emitting diode is coupled to a sixth output terminal of the interface circuit.
Compared with the prior art, the technical scheme of the utility model following beneficial effect has:
through the signal isolation circuit and the control switch circuit, the pulse signal generated by the pulse signal generating circuit can be sent to the interface circuit, so that the simulation of a capacitance voltage signal of the high-voltage ignition power supply is realized; by controlling the on-off and the on-off of a switch element in a switch circuit, the simulation of the on-off signal of the bridge foil of the ignition tube can be realized; whether the output of the first solution, the second solution and the third solution is normal or not can be simulated through the light emitting diode in the output indicating circuit.
The embodiment of the utility model provides an in, through setting up pulse signal generating circuit, can adjust the voltage range of the high pressure ignition power supply who simulates.
The utility model discloses an in the embodiment, through setting up switch and emitting diode's quantity among control switch circuit and the output indicating circuit, can realize the adjustment to the input/output signal's that test circuit simulates quantity.
Drawings
Fig. 1 is a schematic structural diagram of a test circuit for a fire tube safety control module in an embodiment of the present invention.
Fig. 2 is a circuit diagram of a test circuit for a fire tube safety control module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a test circuit for a fire tube safety control module in an embodiment of the present invention, which includes a pulse signal generating circuit 1, a signal isolating circuit 2, a control switch circuit 3, an output indicating circuit 4 and an interface circuit 5.
The input end of the pulse signal generating circuit 1 is coupled with the first output end of the interface circuit 5, and the output end of the pulse signal generating circuit 1 is coupled with the input end of the signal isolating circuit 2;
the signal isolation circuit 2 is coupled to the pulse signal generation circuit 1, the interface circuit 5 and the control switch circuit 3, an output terminal of the pulse signal generation circuit 1 is coupled to a first input terminal of the signal isolation circuit 2, a second output terminal of the interface circuit 5 is coupled to a second input terminal of the signal isolation circuit 2, a first input terminal of the interface circuit 5 is coupled to an output terminal of the signal isolation circuit 2, and a first output terminal of the control switch circuit 3 is coupled to a third input terminal of the signal isolation circuit 2;
the control switch circuit 3 is coupled to the signal isolation circuit 2 and the interface circuit 5, a third input terminal of the signal isolation circuit 2 is coupled to a first output terminal of the control switch circuit 3, and second and third input terminals of the interface circuit 5 are coupled to second and third output terminals P1 and P2 of the control switch circuit 3, respectively;
the output indicating circuit 4 is coupled to the interface circuit 5, and a third output terminal, a fourth output terminal, a fifth output terminal and a sixth output terminal of the interface circuit 5 are respectively coupled to the first input terminal P3, the second input terminal P4, the third input terminal P5 and the fourth input terminal P6 of the output indicating circuit 4.
Fig. 2 is a circuit diagram of a test circuit for a fire tube safety control module according to an embodiment of the present invention.
Referring to fig. 1 and 2 together, in the embodiment, the pulse signal generating circuit 1 includes a PWM chip PWM1, a first potentiometer RT, a first capacitor CT and a second potentiometer R1;
the PWM chip PWM1 generates a pulse signal;
the first potentiometer RT and the first capacitor CT control the frequency of the pulse signal;
the second potentiometer R1 controls the duty cycle of the pulse signal.
In a specific embodiment, the current limiting resistor R1 is coupled between the pulse signal generating circuit 1 and the signal isolating circuit 2.
The current limiting resistor R1 is matched with the signal isolation circuit 2, so that the signal isolation circuit 2 is ensured to work in an optimal state.
The signal isolation circuit 2 comprises an optical coupler chip OC 1;
and the anode and the cathode of the optical coupler chip 0C1 are used as control signals to control the conduction of signals between the emission set and the collector of the optical coupler chip OC 1.
In a specific embodiment, the pull-up resistor R2 is coupled between the signal isolation circuit 2 and the interface circuit 5.
The pull-up resistor R2 is coupled between the second output terminal of the interface circuit 5 and the output terminal of the signal isolation circuit 2, ensuring that the first input terminal of the interface circuit 5 is at a certain high level.
The control switch circuit 3 includes a first switch KI1, a second switch KI2, and a third switch KI 3;
the first switch KI1 is coupled to the third input terminal of the signal isolation circuit 2 and is coupled to the first input terminal of the interface circuit 5 through the output terminal of the signal isolation circuit 2;
the second switch KI2 is coupled to a second input P1 of the interface circuit;
the third switch KI3 is coupled to the third input P2 of the interface circuit.
The output indicating circuit 4 comprises a first light emitting diode KO1, a second light emitting diode KO2, a third light emitting diode KO3 and a fourth light emitting diode KO 4;
the first LED KO1 is coupled to the third output P3 of the interface circuit 5;
the second light emitting diode KO2 is coupled to the fourth output terminal P4 of the interface circuit 5;
the third LED KO3 is coupled to the fifth output P5 of the interface circuit;
the fourth LED KO4 is coupled to the sixth output P6 of the interface circuit.
In a specific embodiment, the interface circuit is coupled to a safety control module to be tested, the PWM chip is supplied with power through a first output end, the PWM chip generates a pulse signal, and generates a pulse wave with a specific frequency representing the voltage value of the capacitor of the high-voltage ignition power supply by adjusting the first potentiometer and the second potentiometer, and when the first switch KI1 is closed, the pulse wave is sent to the safety control module through a first input end of the interface circuit.
When the second switch KI2 and the third switch KI3 are closed, the second input end P1 and the third input end P2 of the interface circuit detect low level and send the low level to the safety control module for simulating the on-off of the bridge foil of the ignition tube and related state signals.
After receiving ignition instructions such as a first solution, a second solution, a third solution and the like sent by the security control module, the interface circuit 5 sends the ignition instructions to the light emitting diodes KO1, KO2, KO3 and KO4 corresponding to the output display circuit 4 through the corresponding output ends P3, P4, P5 and P6 to test whether the output signals of the security control module can work normally.
The embodiment of the utility model provides an in through setting up pulse signal generating circuit 1, can adjust the voltage range of the high pressure ignition power supply who simulates.
The utility model discloses an in the embodiment through setting up switch and emitting diode's quantity in control switch circuit 3 and the output indicating circuit 4, can realize the adjustment to the input/output signal's that test circuit simulates quantity.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (9)
1. A test circuit for a squib safety control module, comprising: the device comprises a pulse signal generating circuit, a signal isolating circuit, a control switch circuit, an output indicating circuit and an interface circuit;
the input end of the pulse signal generating circuit is coupled with the first output end of the interface circuit, and the output end of the pulse signal generating circuit is coupled with the input end of the signal isolating circuit;
the signal isolation circuit is coupled with the pulse signal generation circuit, the interface circuit and the control switch circuit, the output end of the pulse signal generation circuit is coupled with the first input end of the signal isolation circuit, the second output end of the interface circuit is coupled with the second input end of the signal isolation circuit, the first input end of the interface circuit is coupled with the output end of the signal isolation circuit, and the first output end of the control switch circuit is coupled with the third input end of the signal isolation circuit;
the control switch circuit is coupled with the signal isolation circuit and the interface circuit, a third input end of the signal isolation circuit is coupled with a first output end of the control switch circuit, and a second input end and a third input end of the interface circuit are respectively coupled with a second output end and a third output end of the control switch circuit;
the output indicating circuit is coupled with the interface circuit, and a third output end, a fourth output end, a fifth output end and a sixth output end of the interface circuit are respectively coupled with the first input end, the second input end, the third input end and the fourth input end of the output indicating circuit.
2. The test circuit for the fire tube safety control module according to claim 1, wherein the pulse signal generating circuit comprises a PWM chip, a first potentiometer, a first capacitor and a second potentiometer;
the PWM chip generates a pulse signal;
the first potentiometer and the first capacitor control the frequency of the pulse signal;
the second potentiometer controls a duty ratio of the pulse signal.
3. The test circuit for a squib safety control module according to claim 2, wherein the pulse signal generating circuit further comprises: and the current limiting resistor is coupled between the pulse signal generating circuit and the signal isolating circuit.
4. The test circuit for the fire tube safety control module according to claim 3, wherein the current limiting resistor is matched with the signal isolation circuit to ensure that the signal isolation circuit operates in an optimal state.
5. The test circuit for the fire tube safety control module according to claim 1, wherein the signal isolation circuit comprises an optical coupler chip;
and the anode and the cathode of the optical coupling chip are used as control signals to control the conduction of signals between the emission set and the collector of the optical coupling chip.
6. The test circuit for a squib safety control module of claim 5, wherein the signal isolation circuit further comprises: a pull-up resistor coupled between the signal isolation circuit and the interface circuit.
7. The test circuit of claim 6, wherein the pull-up resistor is coupled between the second output of the interface circuit and the output of the signal isolation circuit to ensure that the first input of the interface circuit is at a certain high level.
8. The test circuit for a squib safety control module according to claim 1, wherein the control switch circuit comprises a first switch, a second switch, and a third switch;
the first switch is coupled to the third input end of the signal isolation circuit and is coupled with the first input end of the interface circuit through the output end of the signal isolation circuit;
the second switch is coupled to a second input of the interface circuit;
the third switch is coupled to a third input of the interface circuit.
9. The test circuit for a fire tube safety control module of claim 1, wherein the output indication circuit comprises a first light emitting diode, a second light emitting diode, a third light emitting diode, and a fourth light emitting diode;
the first light emitting diode is coupled with a third output end of the interface circuit;
the second light emitting diode is coupled with a fourth output end of the interface circuit;
the third light emitting diode is coupled with a fifth output end of the interface circuit;
the fourth light emitting diode is coupled to a sixth output terminal of the interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199897.XU CN210714881U (en) | 2019-07-26 | 2019-07-26 | Test circuit for ignition tube safety control module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921199897.XU CN210714881U (en) | 2019-07-26 | 2019-07-26 | Test circuit for ignition tube safety control module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210714881U true CN210714881U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921199897.XU Active CN210714881U (en) | 2019-07-26 | 2019-07-26 | Test circuit for ignition tube safety control module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210714881U (en) |
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2019
- 2019-07-26 CN CN201921199897.XU patent/CN210714881U/en active Active
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