Smoke screen emission driving device with impedance detection function and driving method thereof

Abstract

The invention relates to the technical field of electrical control, and particularly discloses a smoke screen emission driving device with an impedance detection function, which comprises a box body, a power supply unit, a control unit, an AD acquisition isolation unit, a bus communication unit, an emission driving unit and an impedance detection unit, the power supply unit is used for providing direct current, the control unit is used for receiving output voltage and sending a driving output signal, the AD acquisition isolation unit is used for receiving the output voltage and sending the output voltage to the control unit, and the bus communication unit is used for receiving a transmitting cylinder impedance value of an output loop transmitted by the control unit and sending a message. The emission driving unit is used for outputting smoke screen emission driving signals, the impedance detection unit is used for dividing the voltage between the negative electrode of the power supply unit and the positive electrode of the emission cylinder and detecting the current of an impedance detection loop, and the box body is further provided with a connector, a power indicating lamp and an emergency triggering switch. According to the scheme, the impedance and state of the smoke bomb can be detected and fed back in real time before the smoke bomb is launched.

Description

Technical Field

[0001] The invention relates to the technical field of electrical control, and in particular provides a smoke screen emission driving device with impedance detection function and a driving method thereof. Background Art

[0002] The smoke screen launch drive device can launch smoke bombs and shrapnel bombs according to the strategy, and can also launch strong light blinding bombs, infrared jamming bombs and millimeter wave jamming bombs, etc. Therefore, the requirements for the application of smoke screen launch drive devices in special vehicles are getting higher and higher. The traditional smoke screen launch drive device has certain limitations in terms of driving power and safety when meeting the requirements of marine and land amphibious environment conditions. In particular, when the launch tube is soaked in seawater and rusts, and the output circuit of the smoke screen launch drive device has a short circuit fault, it will interfere with the launch of smoke bombs and may even lose the power of the special vehicle, causing the special vehicle to be unable to move and exposed to the outside field of view, which greatly affects the safety of the smoke screen launch drive device during launch and the possibility of protecting the special vehicle.

[0003] At present, the traditional smoke screen launching drive device has the following main problems: 1. It is difficult to detect and feedback the status of the smoke bomb in the output circuit of the smoke screen launching drive device, and the smoke screen launching drive device must be operated by the gunner of the special vehicle in a fixed position; 2. The number of ammunition launched by the traditional smoke screen launching drive device is generally 2, 4, or 8 rounds, and there is no separate launching route, which is not close enough to the actual combat requirements of special vehicles.

[0004] To sum up, it is an urgent problem to create a smoke launching drive device with impedance detection function and a driving method thereof to realize real-time detection and feedback of the impedance and state of the smoke bomb in the output circuit before the special vehicle smoke launching drive device is launched, and to improve the safety and reliability of the smoke launching drive device during launch. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a smoke screen emission driving device with impedance detection function and a driving method thereof.

[0006] The present invention provides a smoke screen emission driving device with impedance detection function, comprising a box body and a power supply unit installed in the box body, a control unit, an AD acquisition isolation unit, a bus communication unit, an emission driving unit and an impedance detection unit; Power supply unit: used to provide DC power to the control unit, AD acquisition isolation unit, bus communication unit, transmission drive unit, and impedance detection unit; Control unit: used to receive the output voltage collected by the AD collection isolation unit, send the driving output signal to the transmitting driving unit, and exchange data with the bus communication unit; AD acquisition isolation unit: receives the output voltage detected by the impedance detection unit and sends it to the control unit through digital isolation; Bus communication unit: used to receive the transmitter impedance value of the output circuit transmitted by the control unit, and send the message to the control unit for processing; Transmitting drive unit: used to output smoke screen transmitting drive signal; Impedance detection unit: used to divide the voltage between the negative electrode of the power supply unit and the positive electrode of the transmitting tube, and detect the current size of the impedance detection circuit; The box body is also provided with a connector, a power indicator light and a firing switch; the firing switch is designed to prevent accidental touch, and is used to fire the normal smoke bomb in the launch tube with one click in an emergency situation.

[0007] Furthermore, the power supply unit includes an intelligent high-side switch U1 and an isolated DC-DC converter U2. The positive power supply electrode of the special vehicle is connected to the input end of the intelligent high-side switch U1, and the direct current flows to the input end of the isolated DC-DC converter U2 through the output end of the intelligent high-side switch U1.

[0008] Furthermore, the control unit includes a single chip microcomputer U3.

[0009] Furthermore, the AD acquisition isolation unit includes a digital isolator U5 and an AD acquisition chip U4 connected to the digital isolator U5, and the digital isolator U5 is connected to the single-chip microcomputer U3.

[0010] Furthermore, the transmitting drive unit includes an intelligent high-side switch U6 and a diode D1; the input end of the intelligent high-side switch U6 is connected to the output end of the isolated DC-DC converter U2 in the power supply unit, the output end of the intelligent high-side switch U6 is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the input end of the transmitting tube.

[0011] Furthermore, the impedance detection unit includes a diode D2, wherein the cathode of the diode D2 is connected to the input end of the transmitting tube.

[0012] Furthermore, the impedance detection unit is connected between the power supply unit and the transmitting tube.

[0013] A driving method of a smoke screen emission driving device with an impedance detection function, using the above-mentioned smoke screen emission driving device for driving, when in a normal situation, comprises the following steps: S1: The power supply unit injects a detection voltage into the input end of the impedance detection unit; S2: The impedance detection unit performs voltage division detection on the voltage between the negative electrode of the power supply unit and the positive electrode of the transmitting tube, and at the same time measures the current size of the impedance detection output circuit; S3: The AD acquisition isolation unit receives the output voltage and current values ​​detected by it and sends them to the control unit; S4: The control unit calculates the impedance value of the transmitting tube at this time according to the output voltage and current values ​​sent by the AD acquisition isolation unit, and determines whether the transmitting tube is in a normal, short-circuited, or open circuit state according to the impedance value; S5: The control unit sends the impedance value of the transmitting tube to the bus communication unit for status display and receives the transmitting signal at the same time; the bus communication unit receives the impedance value of the transmitting tube transmitted by the control unit and sends a message to the control unit for processing the transmitting signal; At this time, if the launch tube is in normal condition, it will fire; if the condition is abnormal, it will not fire.

[0014] Further, in S3, the detected output voltage and current values ​​are sent to the single-chip microcomputer U3 through the digital isolator U5; in S4, the single-chip microcomputer U3 in the control unit calculates the impedance value of the transmitting tube according to the output voltage and current values ​​sent by the AD acquisition isolation unit; in S5, the single-chip microcomputer U3 in the control unit sends the impedance value; If the intelligent high-side switch U6 in the transmitting drive unit detects that the current or voltage exceeds its safety threshold, it will immediately and automatically cut off the connection between the power supply unit and the transmitting drive unit.

[0015] Furthermore, when in an emergency situation, the normal smoke bomb in the launch tube can be launched by pressing the firing switch. The intelligent high-side switch U1 in the power supply unit and the intelligent high-side switch U6 in the launch drive unit serve as drive output devices and resettable electronic fuses to prevent damage to components and devices of the smoke launch drive device due to overcurrent and overvoltage.

[0016] Compared with the prior art, the present invention can achieve the following beneficial effects: 1. The smoke screen launching driving device and driving method of the present invention can realize real-time detection and feedback of the impedance and state of the smoke bomb in the output circuit before the smoke screen launching driving device is launched, and output the smoke screen launching driving signal at the same time, thereby improving the safety and reliability of the smoke screen launching driving device during launching.

[0017] 2. The smoke screen emission driving device and driving method of the present invention adopt an intelligent high-side switch as a driving output device and a resettable electronic fuse, which can prevent the subsequent electronic circuit from damaging components when the current is abnormal, and the range of overcurrent protection can be adjusted by external components, which can be applied to more system designs and has strong versatility and practicality.

[0018] 3. The smoke screen launching driving device and driving method of the present invention adopt a bus communication design, which is convenient for the driver of the special vehicle to launch the smoke bomb at his working position, and increases the operability of the smoke screen launching driving device under certain conditions.

[0019] 4. The smoke screen launching driving device and driving method of the present invention can launch the normal smoke screen bomb in the launch tube by one-touch firing button in emergency situations, which can reduce the possibility of special vehicles being exposed to the field of vision during operation.

[0020] 5. The smoke screen emission drive device and driving method of the present invention add a separate emission control circuit, which is closer to the functional requirements of special vehicles. At the same time, a mechanical relay-free design is adopted to reduce the risk of mechanical locking, so that the performance of high temperature, low temperature, humidity, salt spray, vibration, impact and other performances can fully meet the requirements under more severe conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of a smoke screen emission driving device provided according to an embodiment of the present invention; Figure 2 is a schematic block diagram of various components inside a box body in a smoke screen emission driving device provided according to an embodiment of the present invention; Figure 3 is a circuit schematic diagram of a smoke screen emission driving method provided according to an embodiment of the present invention; Figure 4 is a flow chart of a smoke screen emission driving method provided in an embodiment of the present invention; Figure 5 The present invention is a flowchart of a smoke screen emission driving device and a driving method thereof according to an embodiment of the present invention.

[0022] The reference numerals include: box body 1, firing switch 2, connector 3, power indicator light 4. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the following Figure 1-5 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0024] A smoke screen emission drive device with impedance detection function comprises a box body 1 and a power supply unit, a control unit, an AD acquisition isolation unit, a bus communication unit, an emission drive unit and an impedance detection unit installed in the box body 1, as shown in the figure. Figure 2 As shown, at the same time, Figure 1 As shown, the box body 1 is also provided with a connector 3, a power indicator light 4 and a firing switch 2. The firing switch 2 is an anti-accidental-touch firing button. The firing switch 2 is designed to prevent accidental touches and is used to fire the normal smoke bomb in the launch tube with one click in an emergency situation.

[0025] Power supply unit: used to provide stable DC power for the control unit, AD acquisition isolation unit, bus communication unit, transmission drive unit, impedance detection unit, such as Figure 3 As shown, the power supply unit includes an intelligent high-side switch U1 and an isolated DC-DC converter U2. The positive pole of the power supply is connected to the input end of the intelligent high-side switch U1, and the direct current flows to the input end of the isolated DC-DC converter U2 through the output end of the intelligent high-side switch U1.

[0026] Control unit: used to receive the output voltage collected by the AD acquisition isolation unit, send the drive output signal to the transmission drive unit, and exchange data with the bus communication unit, such as Figure 3 As shown, the control unit includes a single chip microcomputer U3.

[0027] AD acquisition isolation unit: receives the output voltage detected by the impedance detection unit and sends it to the control unit through digital isolation, such as Figure 3 As shown, the AD acquisition isolation unit includes a digital isolator U5 and an AD acquisition chip U4 connected to the digital isolator U5, and the digital isolator U5 is connected to the single-chip microcomputer U3.

[0028] Bus communication unit: used to receive the transmitter impedance value of the output circuit transmitted by the control unit, and send the message to the control unit for processing; Transmitting drive unit: used to output smoke screen transmitting drive signal, such as Figure 3 As shown, the transmitting drive unit includes an intelligent high-side switch U6 and a diode D1; the input end of the intelligent high-side switch U6 is connected to the output end of the isolated DC-DC converter U2 in the power supply unit, the output end of the intelligent high-side switch U6 is connected to the anode of the diode D1, and the cathode of the diode D1 is connected to the input end of the transmitting tube.

[0029] Impedance detection unit: used to divide the voltage between the negative pole of the power supply unit and the positive pole of the transmitter tube, and detect the current size of the impedance detection circuit, such as Figure 3 As shown, the impedance detection unit includes a diode D2, the cathode of which is connected to the input end of the transmitting tube, and the impedance detection unit is connected between the power supply unit and the transmitting tube.

[0030] A driving method of a smoke screen emission driving device with an impedance detection function, using the above-mentioned smoke screen emission driving device for driving, Under normal circumstances, the following steps are included: S1: The power supply unit injects a detection voltage into the input end of the impedance detection unit. The output end of the impedance detection unit is connected to the positive electrode of the transmitting tube. The negative electrode of the transmitting tube is grounded nearby to form an impedance detection loop.

[0031] S2: The impedance detection unit performs voltage division detection on the voltage between the negative electrode of the power supply unit and the positive electrode of the transmitting tube, and at the same time measures the current size of the impedance detection output circuit.

[0032] S3: The AD acquisition isolation unit receives the output voltage and current values ​​detected by it and sends them to the control unit. Specifically, the detected output voltage and current values ​​are sent to the single-chip computer U3 through the digital isolator U5.

[0033] S4: The control unit calculates the impedance value of the transmitting tube at this time according to the output voltage and current values ​​sent by the AD acquisition isolation unit, and determines whether the transmitting tube is normal, short-circuited, open-circuited, etc. according to its impedance value. Specifically, the single-chip microcomputer U3 in the control unit calculates the impedance value of the transmitting tube according to the output voltage and current values ​​sent by the AD acquisition isolation unit.

[0034] S5: The control unit sends the impedance value of the transmitting tube to the bus communication unit for status display, and receives the transmitting signal at the same time; the bus communication unit receives the impedance value of the transmitting tube transmitted by the control unit, and sends a message to the control unit for processing the transmitting signal, specifically, the impedance value is sent by the single-chip microcomputer U3 in the control unit; if the intelligent high-side switch U6 in the transmitting drive unit detects that the current or voltage exceeds its safety threshold, it will immediately and automatically cut off the connection between the power supply unit and the transmitting drive unit.

[0035] At this time, if the launch tube is in normal condition, it will fire; if the condition is abnormal, it will not fire.

[0036] When in an emergency situation, the normal smoke bomb in the launch tube can be launched by pressing the firing switch 2. The intelligent high-side switch U1 in the power supply unit and the intelligent high-side switch U6 in the launch drive unit serve as drive output devices and resettable electronic fuses to prevent damage to components and devices of the smoke launch drive device due to overcurrent and overvoltage.

[0037] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A smoke screen emission driving device with impedance detection function, characterized in that: It includes a box body and a power supply unit, a control unit, an AD acquisition isolation unit, a bus communication unit, a transmission drive unit and an impedance detection unit installed in the box body; Power supply unit: used to provide DC power to the control unit, AD acquisition isolation unit, bus communication unit, transmission drive unit, and impedance detection unit; Control unit: used to receive the output voltage collected by the AD collection isolation unit, send the driving output signal to the transmitting driving unit, and exchange data with the bus communication unit; AD acquisition isolation unit: receives the output voltage detected by the impedance detection unit and sends it to the control unit through digital isolation; Bus communication unit: used to receive the transmitter impedance value of the output circuit transmitted by the control unit, and send the message to the control unit for processing; Transmitting drive unit: used to output smoke screen transmitting drive signal; Impedance detection unit: used to divide the voltage between the negative electrode of the power supply unit and the positive electrode of the transmitting tube, and detect the current size of the impedance detection circuit; The box body is also provided with a connector, a power indicator light and a firing switch; the firing switch is designed to prevent accidental touch, and is used to fire the normal smoke bomb in the launch tube with one click in an emergency situation.

2. The smoke screen emission driving device with impedance detection function according to claim 1, characterized in that: The power supply unit includes an intelligent high-side switch U1 and an isolated DC-DC converter U2. The positive power supply is connected to the input end of the intelligent high-side switch U1, and direct current flows to the input end of the isolated DC-DC converter U2 through the output end of the intelligent high-side switch U1.

3. The smoke screen emission driving device with impedance detection function according to claim 2, characterized in that: The control unit includes a single chip microcomputer U3.

4. The smoke screen emission driving device with impedance detection function according to claim 3, characterized in that: The AD acquisition isolation unit includes a digital isolator U5 and an AD acquisition chip U4 connected to the digital isolator U5 , and the digital isolator U5 is connected to the single-chip microcomputer U3 .

5. The smoke screen emission driving device with impedance detection function according to claim 4, characterized in that: The transmitting drive unit includes an intelligent high-side switch U6 and a diode D1; the input end of the intelligent high-side switch U6 is connected to the output end of the isolated DC-DC converter U2 in the power supply unit, the output end of the intelligent high-side switch U6 is connected to the positive electrode of the diode D1, and the negative electrode of the diode D1 is connected to the input end of the transmitting tube.

6. The smoke screen emission driving device with impedance detection function according to claim 5, characterized in that: The impedance detection unit includes a diode D2, wherein the cathode of the diode D2 is connected to the input end of the transmitting tube.

7. The smoke screen emission driving device with impedance detection function according to claim 6, characterized in that: The impedance detection unit is connected between the power supply unit and the transmitting tube.

8. A driving method for a smoke screen emission driving device with an impedance detection function, using the smoke screen emission driving device according to any one of claims 5 to 7 for driving, characterized in that: Under normal circumstances, the following steps are included: S1: The power supply unit injects a detection voltage into the input end of the impedance detection unit; S2: The impedance detection unit performs voltage division detection on the voltage between the negative electrode of the power supply unit and the positive electrode of the transmitting tube, and at the same time measures the current size of the impedance detection output circuit; S3: The AD acquisition isolation unit receives the output voltage and current values ​​detected by it and sends them to the control unit; S4: The control unit calculates the impedance value of the transmitting tube at this time according to the output voltage and current values ​​sent by the AD acquisition isolation unit, and determines whether the transmitting tube is in a normal, short-circuited, or open circuit state according to the impedance value; S5: The control unit sends the impedance value of the transmitting tube to the bus communication unit for status display and receives the transmitting signal at the same time; the bus communication unit receives the impedance value of the transmitting tube transmitted by the control unit and sends a message to the control unit for processing the transmitting signal; At this time, if the launch tube is in normal condition, it will fire; if the condition is abnormal, it will not fire.

9. The smoke screen emission driving device with impedance detection function according to claim 8, characterized in that: In S3, the detected output voltage and current values ​​are sent to the single-chip microcomputer U3 through the digital isolator U5; in S4, the single-chip microcomputer U3 in the control unit calculates the impedance value of the transmitting tube according to the output voltage and current values ​​sent by the AD acquisition isolation unit; in S5, the single-chip microcomputer U3 in the control unit sends the impedance value; If the intelligent high-side switch U6 in the transmitting drive unit detects that the current or voltage exceeds its safety threshold, it will immediately and automatically cut off the connection between the power supply unit and the transmitting drive unit.

10. The smoke screen emission driving device according to any one of claims 8 or 9 is driven, characterized in that: When in an emergency situation, the normal smoke bomb in the launch tube can be launched by pressing the firing switch. The intelligent high-side switch U1 in the power supply unit and the intelligent high-side switch U6 in the launch drive unit serve as drive output devices and resettable electronic fuses to prevent damage to components and devices of the smoke launch drive device due to overcurrent and overvoltage.

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