Smoke screen launching drive device with impedance detection function and driving method thereof

Abstract

The application relates to the technical field of electrical control, and particularly discloses a smoke screen launching driving device with an impedance detection function, which comprises a box body and a power supply unit, a control unit, an AD acquisition isolation unit, a bus communication unit, a launching driving unit and an impedance detection unit; the power supply unit is used for providing direct current; the control unit is used for receiving an 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; the bus communication unit is used for receiving a launching barrel impedance value of an output loop transmitted by the control unit and sending a message; the launching driving unit is used for outputting a smoke screen launching driving signal; the impedance detection unit is used for voltage division between a negative electrode of the power supply unit and a positive electrode of the launching barrel, and detecting the current size of an impedance detection loop; a connector, a power supply indicator lamp and an emergency firing switch are further arranged on the box body. The scheme can detect the impedance and state of the smoke screen bomb in real time before the smoke screen bomb is launched and feed back the impedance and state.

Description

Technical Field

[0001] This invention relates to the field of electrical control technology, and specifically provides a smoke screen emission drive device with impedance detection function and its driving method. Background Technology

[0002] Smoke screen launching actuators can launch smoke grenades and shrapnel grenades according to specific strategies, and can also launch blinding grenades, infrared chaff, and millimeter-wave chaff. Therefore, the requirements for smoke screen launching actuators used on special vehicles are becoming increasingly stringent. Traditional smoke screen launching actuators, while meeting the requirements of amphibious environments, have limitations in terms of driving power and safety. In particular, when the launch tube is submerged in seawater and rusts, a short circuit fault in the output circuit of the smoke screen launching actuator can interfere with the launch of smoke grenades and may even deplete the special vehicle's power, rendering the vehicle immobile and exposing it to external visibility. This significantly impacts the safety of the smoke screen launching actuator during launch and the ability to protect the special vehicle.

[0003] Currently, traditional smoke grenade launchers have the following main problems: 1. It is difficult to detect and provide feedback on the status of the smoke grenade in the output circuit of the smoke grenade launcher, and the smoke grenade launcher must be operated by the gunner of the special vehicle in a fixed position; 2. The number of rounds fired by traditional smoke grenade launchers is generally 2, 4 or 8, without a separate firing path, which is not close to the actual combat requirements of special vehicles.

[0004] In summary, the creation of a smoke grenade launcher with impedance detection function and its driving method, which enables real-time detection and feedback of the impedance and status of the smoke grenade in the output circuit before the launch of the smoke grenade launcher in special vehicles, thereby improving the safety and reliability of the smoke grenade launcher during launch, is an urgent problem to be solved. Summary of the Invention

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

[0006] The present invention provides a smoke screen emission driving device with impedance detection function, including a housing and 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 installed in the housing;

[0007] Power supply unit: Used to provide DC power to the control unit, AD acquisition isolation unit, bus communication unit, transmit drive unit, and impedance detection unit;

[0008] Control unit: Used to receive the output voltage acquired by the AD acquisition isolation unit, send the drive output signal to the transmit drive unit, and exchange data with the bus communication unit;

[0009] AD acquisition isolation unit: Receives the output voltage detected by the impedance detection unit and sends it to the control unit through digital isolation;

[0010] 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;

[0011] Transmission drive unit: Used to output smoke screen emission drive signals;

[0012] Impedance detection unit: used to divide the voltage between the negative terminal of the power supply unit and the positive terminal of the launch tube, and to detect the current in the impedance detection circuit;

[0013] The box also features a connector, a power indicator light, and a firing switch; the firing switch is designed to prevent accidental activation and is used to fire the smoke grenade inside the launcher with a single button press in an emergency.

[0014] Furthermore, the power supply unit includes an intelligent high-side switch U1 and an isolated DC-DC converter U2. The positive power supply terminal of the special vehicle is connected to the input terminal of the intelligent high-side switch U1, and the DC power flows from the output terminal of the intelligent high-side switch U1 to the input terminal of the isolated DC-DC converter U2.

[0015] Furthermore, the control unit includes a microcontroller U3.

[0016] Furthermore, the AD acquisition isolation unit includes a digital isolator U5 and an AD acquisition chip U4 connected to the digital isolator U5. The digital isolator U5 is connected to the microcontroller U3.

[0017] Furthermore, the transmitting drive unit includes an intelligent high-side switch U6 and a diode D1; the input terminal of the intelligent high-side switch U6 is connected to the output terminal of the isolated DC-DC converter U2 in the power supply unit, the output terminal of the intelligent high-side switch U6 is connected to the positive terminal of the diode D1, and the negative terminal of the diode D1 is connected to the input terminal of the transmitting tube.

[0018] Furthermore, the impedance detection unit includes a diode D2, the negative terminal of which is connected to the input terminal of the transmitter tube.

[0019] Furthermore, the impedance detection unit is connected between the power supply unit and the transmitter tube.

[0020] A driving method for a smoke screen emission driving device with impedance detection function, using the aforementioned smoke screen emission driving device, includes the following steps under normal conditions:

[0021] S1: The power supply unit injects a detection voltage into the input terminal of the impedance detection unit;

[0022] S2: The impedance detection unit performs voltage division detection on the voltage between the negative terminal of the power supply unit and the positive terminal of the launch tube, and at the same time measures the current of the impedance detection output circuit;

[0023] S3: The AD acquisition isolation unit receives the output voltage and current values ​​it detects and sends them to the control unit;

[0024] S4: The control unit calculates the impedance value of the transmitter tube based on the output voltage and current values ​​sent by the AD acquisition isolation unit, and determines whether the transmitter tube is in a normal, short-circuit, or open-circuit state based on its impedance value.

[0025] S5: The control unit sends the impedance value of the transmitter tube to the bus communication unit for status display, and simultaneously receives the transmission signal; the bus communication unit receives the transmitter tube impedance value transmitted by the control unit and sends a message to the control unit for transmission signal processing;

[0026] At this point, if the launch tube is in normal condition, it will fire; if it is in abnormal condition, it will not fire.

[0027] Furthermore, in S3, the detected output voltage and current values ​​are sent to the microcontroller U3 via the digital isolator U5; in S4, the microcontroller U3 in the control unit calculates the impedance value of the transmitter tube based on the output voltage and current values ​​sent by the AD acquisition isolation unit; in S5, the microcontroller U3 in the control unit sends the impedance value.

[0028] If the intelligent high-side switch U6 in the transmitter drive unit detects that the current or voltage exceeds its safety threshold, it will immediately and automatically disconnect the connection between the power supply unit and the transmitter drive unit.

[0029] Furthermore, in an emergency, the smoke grenade inside the launch tube can be fired with a single press of 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 caused by overcurrent or overvoltage in the smoke launch drive device.

[0030] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0031] 1. The smoke screen launching drive device and driving method of the present invention can realize real-time detection and feedback of the impedance and status of the smoke bomb in the output circuit before the smoke screen launching drive device is launched, and at the same time output the smoke screen launching drive signal, thereby improving the safety and reliability of the smoke screen launching drive device during launch.

[0032] 2. The smoke screen emission driving device and driving method in this invention use an intelligent high-side switch as the driving output device and a resettable electronic fuse, which can prevent the subsequent electronic circuit from damaging the components when the current is abnormal. Moreover, the overcurrent protection range can be adjusted by external components, making it applicable to more system designs and highly versatile and practical.

[0033] 3. The smoke screen launching drive device and driving method in this invention adopt a bus communication design, which makes it convenient for the driver of special vehicles to launch smoke screens at their working position and increases the operability of the smoke screen launching drive device under certain conditions.

[0034] 4. The smoke screen launching drive device and driving method in this invention can launch the normal smoke screen in the launching tube with one click in an emergency, which can reduce the possibility of special vehicles being exposed during operation.

[0035] 5. The smoke screen emission drive device and drive method in this invention have added a separate emission control circuit, which is closer to the functional requirements of special vehicles. At the same time, the mechanical relay-free design reduces the risk of mechanical locking, so that the performance under more severe conditions such as high temperature, low temperature, humid heat, salt spray, vibration, and impact can fully meet the requirements. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a smoke screen emission driving device provided according to an embodiment of the present invention;

[0037] Figure 2 This is a schematic block diagram of the internal components of the smoke screen emission driving device provided according to an embodiment of the present invention;

[0038] Figure 3 This is a circuit schematic diagram of a smoke screen emission driving method provided according to an embodiment of the present invention;

[0039] Figure 4 This is a flowchart of a smoke screen emission driving method provided according to an embodiment of the present invention;

[0040] Figure 5 This is a flowchart illustrating the workflow of a smoke emission driving device and its driving method according to an embodiment of the present invention.

[0041] The reference numerals in the accompanying drawings include: housing 1, trigger switch 2, connector 3, and power indicator light 4. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the appendix. Figure 1-5The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not constitute a limitation thereof.

[0043] A smoke screen emission driver with impedance detection function includes a housing 1 and a power supply unit, a control unit, an AD acquisition isolation unit, a bus communication unit, an emission driver unit, and an impedance detection unit installed within the housing 1, specifically as follows: Figure 2 As shown, at the same time, Figure 1 As shown, the box 1 is also equipped with a connector 3, a power indicator light 4 and a firing switch 2. The firing switch 2 is an anti-accidental firing button. The firing switch 2 is designed to prevent accidental activation and is used to fire the normal smoke grenade inside the launch tube with one button in an emergency.

[0044] Power supply unit: Used to provide stable DC power to the control unit, AD acquisition isolation unit, bus communication unit, transmit drive unit, and 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 terminal of the power supply is connected to the input terminal of the intelligent high-side switch U1, and the DC power flows from the output terminal of the intelligent high-side switch U1 to the input terminal of the isolated DC-DC converter U2.

[0045] Control unit: Used to receive the output voltage acquired by the AD acquisition isolation unit, send drive output signals to the transmit drive unit, and exchange data with the bus communication unit, such as... Figure 3 As shown, the control unit includes a microcontroller U3.

[0046] AD acquisition isolation unit: Receives the output voltage detected by the impedance detection unit and sends it to the control unit via 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. The digital isolator U5 is connected to the microcontroller U3.

[0047] 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;

[0048] Transmission drive unit: Used to output smoke screen emission drive signals, such as Figure 3 As shown, the transmitter drive unit includes an intelligent high-side switch U6 and a diode D1; the input terminal of the intelligent high-side switch U6 is connected to the output terminal of the isolated DC-DC converter U2 in the power supply unit, the output terminal of the intelligent high-side switch U6 is connected to the positive terminal of the diode D1, and the negative terminal of the diode D1 is connected to the input terminal of the transmitter tube.

[0049] Impedance detection unit: Used to divide the voltage between the negative terminal of the power supply unit and the positive terminal of the transmitter tube, and to detect the current in the impedance detection circuit, such as... Figure 3 As shown, the impedance detection unit includes a diode D2, the negative terminal of which is connected to the input terminal of the transmitter tube. The impedance detection unit is connected between the power supply unit and the transmitter tube.

[0050] A driving method for a smoke screen emission driving device with impedance detection function, wherein the aforementioned smoke screen emission driving device is used for driving.

[0051] Under normal circumstances, the following steps are included:

[0052] S1: The power supply unit injects a detection voltage into the input terminal of the impedance detection unit, the output terminal of the impedance detection unit is connected to the positive terminal of the transmitter tube, and the negative terminal of the transmitter tube is grounded nearby, forming an impedance detection circuit.

[0053] S2: The impedance detection unit performs voltage division detection between the negative terminal of the power supply unit and the positive terminal of the launch tube, and simultaneously measures the current of the impedance detection output circuit.

[0054] S3: The AD acquisition isolation unit receives the output voltage and current values ​​it detects and sends them to the control unit. Specifically, the digital isolator U5 sends the detected output voltage and current values ​​to the microcontroller U3.

[0055] S4: The control unit calculates the impedance value of the transmitter tube based on the output voltage and current values ​​sent by the AD acquisition isolation unit, and determines whether the transmitter tube is in a normal, short-circuit, or open-circuit state based on its impedance value. Specifically, the microcontroller U3 in the control unit calculates the impedance value of the transmitter tube based on the output voltage and current values ​​sent by the AD acquisition isolation unit.

[0056] S5: The control unit sends the impedance value of the transmitter tube to the bus communication unit for status display, and simultaneously receives the transmission signal; the bus communication unit receives the transmitter tube impedance value transmitted by the control unit and sends a message to the control unit for transmission signal processing, specifically the impedance value is sent by the microcontroller U3 in the control unit; if the intelligent high-side switch U6 in the transmission drive unit detects that the current or voltage exceeds its safety threshold, it will immediately and automatically disconnect the connection between the power supply unit and the transmission drive unit.

[0057] At this point, if the launch tube is in normal condition, it will fire; if it is in abnormal condition, it will not fire.

[0058] In an emergency, pressing the firing switch 2 will fire the smoke grenade inside the launch tube. 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 caused by overcurrent or overvoltage in the smoke launch drive device.

[0059] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to 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 housing and a power supply unit, a control unit, an AD acquisition isolation unit, a bus communication unit, a transmit drive unit, and an impedance detection unit installed inside the housing; Power supply unit: Used to provide DC power to the control unit, AD acquisition isolation unit, bus communication unit, transmit drive unit, and impedance detection unit; Control unit: Used to receive the output voltage acquired by the AD acquisition isolation unit, send the drive output signal to the transmit drive 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; Transmission drive unit: Used to output smoke screen emission drive signals; Impedance detection unit: used to divide the voltage between the negative terminal of the power supply unit and the positive terminal of the launch tube, and to detect the current in the impedance detection circuit; The box also features a connector, a power indicator light, and a firing switch; the firing switch is designed to prevent accidental activation and is used to fire the smoke grenade inside the launcher with a single button press in an emergency.

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 terminal of the power supply is connected to the input terminal of the intelligent high-side switch U1, and the DC power flows from the output terminal of the intelligent high-side switch U1 to the input terminal of the isolated DC-DC converter U2.

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. The digital isolator U5 is connected to a microcontroller 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 terminal of the intelligent high-side switch U6 is connected to the output terminal of the isolated DC-DC converter U2 in the power supply unit, the output terminal of the intelligent high-side switch U6 is connected to the positive terminal of the diode D1, and the negative terminal of the diode D1 is connected to the input terminal 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, the negative terminal of which is connected to the input terminal of the firing 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 launch tube.

8. A driving method for a smoke screen emission driving device with impedance detection function, wherein the smoke screen emission driving device of claim 7 is used 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 terminal of the impedance detection unit; S2: The impedance detection unit performs voltage division detection on the voltage between the negative terminal of the power supply unit and the positive terminal of the launch tube, and at the same time measures the current of the impedance detection output circuit; S3: The AD acquisition isolation unit receives the output voltage and current values ​​it detects and sends them to the control unit; S4: The control unit calculates the impedance value of the transmitter tube based on the output voltage and current values ​​sent by the AD acquisition isolation unit, and determines whether the transmitter tube is in a normal, short-circuit, or open-circuit state based on its impedance value. S5: The control unit sends the impedance value of the transmitter tube to the bus communication unit for status display, and simultaneously receives the transmission signal; the bus communication unit receives the transmitter tube impedance value transmitted by the control unit and sends a message to the control unit for transmission signal processing; At this point, if the launch tube is in normal condition, it will fire; if it is in abnormal condition, it will not fire.

9. The driving method of the smoke 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 microcontroller U3 via the digital isolator U5; in S4, the microcontroller U3 in the control unit calculates the impedance value of the transmitter tube based on the output voltage and current values ​​sent by the AD acquisition isolation unit; in S5, the microcontroller U3 in the control unit sends the impedance value. If the intelligent high-side switch U6 in the transmitter drive unit detects that the current or voltage exceeds its safety threshold, it will immediately and automatically disconnect the connection between the power supply unit and the transmitter drive unit.

10. The driving method of the smoke emission driving device with impedance detection function according to any one of claims 8 or 9, characterized in that, In an emergency, the smoke grenade inside the launch tube can be fired with a single press of 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 caused by overcurrent or overvoltage in the smoke launch drive device.

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