Equipment and real-time shooting protection circuit thereof based on position sensor

Abstract

The invention relates to equipment and a real-time shooting protection circuit thereof based on a position sensor, and belongs to the technical field of weapon pitching or traversing control systems. Comprising a position switch used for detecting whether the degree of freedom corresponding to equipment is in a shooting forbidding area or not, and the position switch is correspondingly connected with an intermediate switch used for cutting off a shooting circuit; when the position switch detects that the equipment is located in the shooting forbidding area under the corresponding degree of freedom, the shooting circuit is cut off through the middle switch so as to prevent the equipment from shooting. According to the real-time shooting protection circuit, when any position sensor detects that the shooting equipment enters the shooting forbidding area on the corresponding freedom degree, the shooting circuit is cut off through the intermediate relay, all the positions are controlled through the circuit, software communication time delay does not exist, misjudgment caused by software loopholes or misoperation does not exist, and the real-time shooting protection circuit is safe and reliable. The circuit is simple in structure, short in response time, and high in safety and reliability.

Description

Technical Field

[0001] The invention relates to a device and a real-time shooting protection circuit based on a position sensor thereof, belonging to the technical field of weapon pitch or traverse control systems. Background Art

[0002] Weapons and equipment such as guns and cannons that are fixed on ships or other places, firing at a certain horizontal azimuth angle and elevation (height) angle will damage surrounding friendly equipment and facilities. In order to reliably avoid accidental shooting, it is necessary to provide a shooting protection device to limit the firing of weapons and equipment within a certain azimuth angle range and elevation angle range.

[0003] Generally, the shooting protection device uses the shooting protection circuit to interlock and limit the closing of the shooting circuit, thereby disconnecting the shooting circuit to avoid triggering firing. The commonly used shooting protection circuit is controlled by software. This protection method relies on the position encoder to identify the no-shooting area, and obtains the pointing position of the weapon equipment (such as the rotation angle, etc.) according to the position encoder. When the pointing position of the weapon equipment is judged to be in the no-shooting area according to the pointing position, the firing is locked. Generally, this kind of software control relies on CAN communication to obtain the device position value, and then cuts off the shooting circuit through software logic judgment. There may be delays, program jams or software vulnerabilities, which may lead to long response time and low reliability, and there are safety hazards. Summary of the invention

[0004] The purpose of the present invention is to provide a device to solve the problem of potential safety hazards caused by the long reaction time and low reliability of the shooting protection; and also to provide a real-time shooting protection circuit based on a position sensor to solve the problem of long reaction time and low reliability of conventional shooting circuits.

[0005] To achieve the above object, the solution of the present invention includes: The present invention provides a technical solution for a real-time shooting protection circuit based on a position sensor, comprising a position switch for detecting whether a corresponding degree of freedom of a device is in a no-shooting area, wherein the position switch is correspondingly connected to an intermediate switch for cutting off a shooting circuit; when the position switch detects that the corresponding degree of freedom of the device is in the no-shooting area, the shooting circuit is cut off by the intermediate switch to prevent the device from shooting.

[0006] Furthermore, when the device rotates in a corresponding degree of freedom, the position switch corresponding to the degree of freedom and the sensing part corresponding to the degree of freedom move relative to each other; when the device is located in a no-shooting area in the corresponding degree of freedom, the sensing part corresponding to the degree of freedom blocks the position switch corresponding to the degree of freedom, thereby causing the position switch corresponding to the degree of freedom to cut off the shooting circuit through the corresponding intermediate switch.

[0007] Furthermore, when the position switch is blocked by the corresponding sensing part, a level signal is output to the corresponding intermediate switch to control the corresponding intermediate switch to close; after any of the intermediate switches is closed, the shooting circuit is disconnected.

[0008] Furthermore, it also includes a shooting circuit control relay, the normally open switch of the shooting circuit control relay is connected in series in the shooting circuit; the normally open switches of each intermediate switch are connected in parallel and connected in series in the loop where the coil of the shooting circuit control relay is located.

[0009] Furthermore, it also includes a shooting circuit control relay, the normally open switch of the shooting circuit control relay is connected in series in the shooting circuit; the normally open switch of each intermediate switch is connected to the corresponding transistor for outputting a level signal to the corresponding transistor base after closing, and each transistor is connected in parallel and in series in the loop where the coil of the shooting circuit control relay is located.

[0010] A technical solution of a device of the present invention includes a real-time shooting protection circuit; the real-time shooting protection circuit includes a position switch for detecting whether the corresponding degree of freedom of the device is in a no-shooting area, and the position switch is correspondingly connected to an intermediate switch for cutting off the shooting circuit; when the position switch detects that the corresponding degree of freedom of the device is in the no-shooting area, the shooting circuit is cut off by the intermediate switch to prevent the device from shooting.

[0011] Furthermore, when the device rotates in a corresponding degree of freedom, the position switch corresponding to the degree of freedom and the sensing part corresponding to the degree of freedom move relative to each other; when the device is located in a no-shooting area in the corresponding degree of freedom, the sensing part corresponding to the degree of freedom blocks the position switch corresponding to the degree of freedom, thereby causing the position switch corresponding to the degree of freedom to cut off the shooting circuit through the corresponding intermediate switch.

[0012] Furthermore, when the position switch is blocked by the corresponding sensing part, a level signal is output to the corresponding intermediate switch to control the corresponding intermediate switch to close; after any of the intermediate switches is closed, the shooting circuit is disconnected.

[0013] Furthermore, it also includes a shooting circuit control relay, the normally open switch of the shooting circuit control relay is connected in series in the shooting circuit; the normally open switches of each intermediate switch are connected in parallel and connected in series in the loop where the coil of the shooting circuit control relay is located.

[0014] Furthermore, it also includes a shooting circuit control relay, the normally open switch of the shooting circuit control relay is connected in series in the shooting circuit; the normally open switch of each intermediate switch is connected to the corresponding transistor for outputting a level signal to the corresponding transistor base after closing, and each transistor is connected in parallel and in series in the loop where the coil of the shooting circuit control relay is located.

[0015] The beneficial effects of the present invention are: The present invention is a pioneering invention. When any position sensor in the real-time shooting protection circuit detects that the shooting device enters the no-shooting area in the corresponding degree of freedom, the shooting circuit will be cut off through an intermediate relay. All are controlled by the circuit, there is no software communication delay, and there is no software loophole or misjudgment caused by misoperation. The circuit structure is simple, the response time is short, and the safety and reliability are high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a working flow chart of the real-time shooting protection circuit based on the position sensor; Figure 2 This is a circuit diagram of a real-time shooting protection circuit based on a position sensor; Figure 3 It is a schematic diagram of the orientation mechanism (swivel joint) of the device in the circuit embodiment; Figure 4 It is a schematic diagram of the height mechanism (pitch joint) of the device in the circuit embodiment; Figure 5 It is a circuit principle diagram of a real-time shooting protection circuit based on a position sensor; Figure 6 is a circuit schematic diagram of an implementation of a switch module in a circuit embodiment; Figure 7 It is a circuit schematic diagram of another implementation of the switch module in the circuit embodiment. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0018] In order to ensure that the shooting circuit is quickly and reliably shut down when the equipment is in a no-shooting area, the concept of the present invention is to propose a real-time shooting protection circuit based on a position sensor. The shooting protection circuit uses a position switch to detect whether the weapon equipment (hereinafter referred to as equipment) is in a no-shooting area. When the equipment is in the no-shooting area, the position switch sends a signal to cause the relay to cut off the shooting circuit, and firing cannot be triggered at this time.

[0019] Specifically, Figure 1As shown, when the device moves within its range of freedom, a position module composed of position switches respectively located on the movement trajectories of its various degrees of freedom detects the position of the device in real time, and determines whether the device is in a no-shooting area by whether the position switch is triggered; when a position switch on any degree of freedom of the device is triggered, it means that the device is in a no-shooting area, and the corresponding position switch in the position module cuts off the shooting circuit through a corresponding series of intermediate switches in the switch module. If no position switch in the position module is triggered, it means that the device is in a non-no-shooting area, and there is no intermediate switch action in the switch module, so that the shooting circuit remains closed and can respond to shooting instructions.

[0020] Among them, the position switch, also known as the position sensor, is a sensing device that can output operations without direct mechanical contact with the moving parts. When an object approaches the sensing surface of the position switch and reaches the action distance, the position switch can be triggered without mechanical contact or any pressure, thereby outputting a level signal.

[0021] Therefore, the real-time shooting protection circuit based on the position sensor of the present invention does not rely on software judgment, and can achieve simple circuit structure, short response time and high reliability.

[0022] Circuit Example: The structure of a real-time shooting protection circuit based on a position sensor in this embodiment is as follows: Figure 2 As shown, the circuit is composed of a position detection module and a switch module; the position detection module includes a plurality of position sensors, which are respectively arranged at the boundary of the device in the corresponding moving direction or moving trajectory, where the device can enter the prohibited shooting area, and are used to identify whether the device has run into the prohibited shooting area. The switch module includes a signal processing relay corresponding to the position sensor as an intermediate switch, and the position sensor outputs a signal to control the corresponding signal processing relay, and all signal processing relays are connected in series with the shooting circuit control relay in the shooting circuit through the logic control. That is, when all position sensors output a signal that the device has not entered the prohibited shooting area, all signal processing relays output a corresponding signal, and the shooting circuit control relay is turned on accordingly, allowing shooting; if any position sensor outputs a signal that the device has entered the prohibited shooting area, the shooting circuit control relay is disconnected through the corresponding signal processing relay, resulting in the shooting circuit being disconnected and unable to shoot.

[0023] As a specific implementation, the device as a whole is located on an orientation mechanism, and the orientation mechanism is used to realize the horizontal rotation of the device, including Figure 3The chassis shown in the figure is composed of a non-rotatable part 10 and a rotatable part 20 rotatably assembled with the non-rotatable part 10. The rotatable part 20 is provided with a turret of the equipment, and the turret of the equipment is driven by a motor to realize the rotation of the equipment. The first position sensor 21 and the second position sensor 22 are arranged on the rotatable part 20, and rotate with the rotation of the equipment. The sensing block 11 is fixed on the non-rotatable part 10, extends toward the rotatable part 20, and is suspended above the rotatable part 20. When the equipment rotates to a set azimuth angle, the corresponding position sensor will be located below the sensing block 11, and will be blocked by the sensing block 11 to output a signal.

[0024] The positions and coverage of the first position sensor 21 and the second position sensor 22 are set according to actual needs, and the position sensors in the rotation direction can also be increased or decreased to ensure that when the corresponding position sensor is blocked by the sensing block 11, the device rotates to the prohibited shooting area.

[0025] Furthermore, the device also includes a height mechanism for achieving pitch adjustment of the device, the height mechanism being as follows: Figure 4 As shown, the device comprises a non-rotatable cradle 30 and an arm 50 that rotates around an ear shaft 40 disposed on the cradle 30. A third position sensor 31 is disposed on the cradle 30 around the ear shaft 40, and a sensing arm 51 that also rotates around the ear shaft 40 extends toward one end of the cradle from the arm 50. When the device arm 50 rotates to a set pitch angle, the sensing arm 51 will block the third position sensor 31, and the third position sensor 31 is blocked by the sensing arm 51, thereby outputting a signal.

[0026] The position and coverage of the third position sensor 31 are set according to actual needs, and a position sensor in the pitch direction may be further added to ensure that when the corresponding position sensor is blocked by the sensing arm 51, the device is located in the prohibited shooting area in the pitch direction.

[0027] The circuit principle of a real-time shooting protection circuit based on a position sensor in this embodiment is as follows: Figure 5As shown, the first position sensor 21, the second position sensor 22 and the third position sensor 31 are powered by a DC24V working power supply. When the sensing area of ​​the corresponding sensor is blocked, a high-level signal is output to the corresponding signal processing relay, and the high-level signal energizes the coil of the corresponding signal processing relay; specifically, the high-level signal can drive the transistor connected in series in the loop where the coil is located to conduct, so that the loop is turned on and the coil is energized. The energization of the coil closes the normally open switch of the corresponding signal processing relay, and the signal processing relay outputs a high-level signal to the shooting circuit control relay. When any of the signal processing relays 1, 2, and 3 corresponding to the first position sensor 21, the second position sensor 22, and the third position sensor 31 respectively output a high-level signal, the coil of the shooting circuit control relay is energized, thereby disconnecting the normally closed switch connected in series in the shooting circuit of the shooting circuit control relay, and the shooting circuit is disconnected and cannot respond to the shooting command.

[0028] When signal processing relays 1, 2, and 3 do not output high-level signals, the coil of the shooting circuit control relay loses power, the normally closed switch of the shooting circuit control relay connected in series in the shooting circuit resumes closing, and the shooting circuit is closed to allow a response to the shooting command.

[0029] Specifically, Figure 6 As shown, the output terminals of the signal processing relays 1, 2, and 3 are respectively connected to the bases of the NPN transistors in the driving circuit where the shooting circuit control relay coil is located, which are connected in parallel with each other and then in series. The high-level signal will drive the corresponding transistor to conduct. When any transistor is turned on, the shooting circuit control relay coil will be energized, thereby disconnecting the normally closed switch in series with the shooting circuit control relay in the shooting circuit.

[0030] As another embodiment, Figure 7 As shown, the normally open contacts of signal processing relays 1, 2, and 3 are connected in parallel with each other and then in series in the driving circuit where the shooting circuit control relay coil is located. When any signal processing relay coil is energized and the corresponding normally open switch is closed, the shooting circuit control relay coil will be energized, its normally closed switch will be disconnected, and no high-level signal will be output.

[0031] In summary, the working process of a real-time shooting protection circuit based on a position sensor in this embodiment is as follows: a) After the equipment is turned on, it is controlled or performs rotation and pitch movements according to the preset program; b) The position module detects in real time and determines whether it is in the prohibited area; c) When the position module detects that the device is in a no-shooting area, the position sensor sends a signal, the switch module relay operates, and the shooting circuit is cut off. At this time, the firing circuit is invalid; when the position module detects that the device is in a non-no-shooting area, the position sensor does not send a signal, the switch module relay does not operate, the shooting circuit is closed, and the firing circuit is valid.

[0032] The shooting protection circuit in this embodiment is composed of a switch module and a position detection module. The switch module is composed of a relay, and the no-shooting area detection module is composed of a position sensor. The shooting protection circuit has a simple structure, sensitive sensing without time delay, and reliable action. When the device is in the no-shooting area, the shooting circuit is reliably shut off, and when the device exits the no-shooting area, the shooting circuit automatically returns to normal.

[0033] Device Example: A device provided in this embodiment includes a real-time shooting protection circuit based on a position sensor as introduced in the circuit embodiment. The real-time shooting protection circuit can prevent the device from responding to a shooting instruction and firing in a prohibited area. The specific real-time shooting protection circuit has been introduced clearly enough in the circuit embodiment and will not be repeated here.

Claims

1. A real-time shooting protection circuit based on a position sensor, characterized in that: It includes a position switch for detecting whether the corresponding degree of freedom of the device is in a no-shooting area, and the position switch is correspondingly connected to an intermediate switch for cutting off the shooting circuit; when the position switch detects that the corresponding degree of freedom of the device is in the no-shooting area, the shooting circuit is cut off by the intermediate switch to prevent the device from shooting.

2. The real-time shooting protection circuit based on position sensor according to claim 1, characterized in that: When the device rotates in a corresponding degree of freedom, the position switch corresponding to the degree of freedom moves relative to the sensing part corresponding to the degree of freedom; When the device is located in a no-shooting area under a corresponding degree of freedom, the sensing portion corresponding to the degree of freedom blocks the position switch corresponding to the degree of freedom, so that the position switch corresponding to the degree of freedom cuts off the shooting circuit through the corresponding intermediate switch.

3. The real-time shooting protection circuit based on position sensor according to claim 2 is characterized in that: When the position switch is blocked by the corresponding sensing part, a level signal is output to the corresponding intermediate switch to control the corresponding intermediate switch to close; after any of the intermediate switches is closed, the shooting circuit is disconnected.

4. The real-time shooting protection circuit based on position sensor according to claim 3 is characterized in that: It also includes a shooting circuit control relay, the normally open switch of which is connected in series in the shooting circuit; the normally open switches of each intermediate switch are connected in parallel and then connected in series in the loop where the coil of the shooting circuit control relay is located.

5. The real-time shooting protection circuit based on position sensor according to claim 3 is characterized in that: It also includes a shooting circuit control relay, the normally open switch of which is connected in series in the shooting circuit; the normally open switch of each intermediate switch is connected to the corresponding transistor for outputting a level signal to the corresponding transistor base after closing, and each transistor is connected in parallel and in series in the loop where the coil of the shooting circuit control relay is located.

6. A device, characterized in that: It includes a real-time shooting protection circuit; the real-time shooting protection circuit includes a position switch for detecting whether the corresponding degree of freedom of the device is in a no-shooting area, and the position switch is correspondingly connected to an intermediate switch for cutting off the shooting circuit; When the position switch detects that the device is located in a no-shooting area under the corresponding degree of freedom, the shooting circuit is cut off through the intermediate switch to prevent the device from shooting.

7. The device according to claim 6, characterized in that When the device rotates in a corresponding degree of freedom, the position switch corresponding to the degree of freedom and the sensing part corresponding to the degree of freedom move relative to each other; when the device is located in a no-shooting area in the corresponding degree of freedom, the sensing part corresponding to the degree of freedom blocks the position switch corresponding to the degree of freedom, thereby causing the position switch corresponding to the degree of freedom to cut off the shooting circuit through the corresponding intermediate switch.

8. The device according to claim 7, characterized in that When the position switch is blocked by the corresponding sensing part, a level signal is output to the corresponding intermediate switch to control the corresponding intermediate switch to close; after any of the intermediate switches is closed, the shooting circuit is disconnected.

9. The device according to claim 8, characterized in that It also includes a shooting circuit control relay, the normally open switch of which is connected in series in the shooting circuit; the normally open switches of each intermediate switch are connected in parallel and then connected in series in the loop where the coil of the shooting circuit control relay is located.

10. The device according to claim 8, characterized in that It also includes a shooting circuit control relay, the normally open switch of which is connected in series in the shooting circuit; the normally open switch of each intermediate switch is connected to the corresponding transistor for outputting a level signal to the corresponding transistor base after closing, and each transistor is connected in parallel and in series in the loop where the coil of the shooting circuit control relay is located.

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