Control circuit of target positioning and distance measuring night vision device and night vision device
By designing the control circuit of the target positioning rangefinder night vision instrument in the night vision instrument, the problem that the night vision instrument cannot directly obtain the target distance is solved, and the combination of real-time rangefinder and image acquisition is achieved, improving the convenience and accuracy of operation.
Patent Information
- Application Number
- CN202420677235.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-03
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-04-03
AI Technical Summary
Existing night vision devices cannot directly obtain the target's distance information, and need to be recorded through the rangefinder and external equipment, which is inconvenient to operate.
A control circuit for target positioning rangefinder night vision instrument is designed, including a main control module, rangefinder circuit unit and image acquisition circuit unit. The ranging circuit unit uses the MS1003 chip and the signal receiving comparison circuit to measure the distance through the laser signal and output the ranging data; the image acquisition circuit unit collects and processes infrared images through the camera and fill light control circuit.
Real-time data exchange between distance measurement and image acquisition by night vision instrument is realized, and can clearly display distance measurement parameters and real-time video recording, improving circuit accuracy and target visibility.
Smart Images
Figure CN222868984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of night vision devices, in particular to a control circuit of a target positioning and ranging night vision device and the night vision device. Background Art
[0002] Nowadays, night vision devices have image display and image saving functions. However, when it is necessary to obtain the target distance, it can only be measured through a rangefinder and then recorded through an external text input device or recording device, which is very inconvenient.
[0003] Therefore, in order to solve the technical problem that night vision devices cannot obtain the target distance, it is urgent to design a control circuit and a night vision device for target positioning and ranging. Utility Model Content
[0004] In order to solve the technical problems mentioned in the background technology, the utility model provides a control circuit of a target positioning and ranging night vision device and a night vision device.
[0005] In a first aspect, the utility model provides a control circuit for a target ranging night vision device, comprising:
[0006] Main control module;
[0007] The ranging circuit unit comprises: a ranging circuit and an angle detection circuit electrically connected to the main control module to output ranging data and angle data of the target to the main control module;
[0008] The image acquisition circuit unit includes a fill light control circuit and a camera, wherein
[0009] The fill light control circuit is controlled by the main control module to adjust the fill light intensity, and the camera captures the target image and sends it to the main control module.
[0010] Furthermore, the distance measurement circuit includes: an MS1003 chip and a signal receiving and comparing circuit, wherein
[0011] The signal receiving comparison circuit comprises: a comparator;
[0012] The in-phase input terminal of the comparator is connected to the laser signal reflected from the target through the capacitor C9, and is also connected to the light intensity signal emitted by the main control module through the resistor R11;
[0013] The inverting input terminal of the comparator obtains a reference voltage from an analog reference voltage terminal of the main control module;
[0014] The output end of the comparator outputs a stop pulse which is connected to the stop trigger end of the MS1003 chip; and
[0015] The main control module is connected to the corresponding port of the MS1003 chip to obtain the ranging data.
[0016] Furthermore, the distance measurement circuit unit further includes: an angle detection circuit;
[0017] The angle detection circuit includes: an angle detection sensor, whose serial clock line and serial data line are electrically connected to corresponding ports of the main control module through resistors R2 and R4 respectively, so as to obtain angle data of the target photographed by the target ranging night vision device.
[0018] Furthermore, the MS1003 chip constitutes a time measurement circuit, and includes: a crystal oscillator circuit, a resistor R25; wherein
[0019] The clock end of the MS1003 chip is electrically connected to the crystal oscillator circuit;
[0020] The stop trigger terminal of the driving chip MS1003 is electrically connected to the output terminal of the comparator through a series resistor R25.
[0021] Furthermore, the distance measuring circuit unit further includes: a pulse transmitting circuit;
[0022] The pulse transmission circuit includes: an AND gate and a boost chip; wherein
[0023] The START end of the MS1003 chip is connected to one end of the resistor R17, and the other end of the resistor R17 is respectively connected to the two input ends of the AND gate and the START end of the main control module;
[0024] The START end of the MS1003 chip is also connected to one end of a resistor R18, and the other end of the resistor R18 is connected to the output end of the AND gate to output the shaped pulse waveform externally; and
[0025] The boost chip generates high voltage for external output.
[0026] Furthermore, the fill light control circuit includes: a transistor Q5, a resistor R28 and a resistor R26;
[0027] The light intensity signal terminal of the main control module is electrically connected to the base of the transistor Q5 through the resistor R28, and the power supply is connected to the collector of the transistor Q5 through the current limiting resistor and the light emitting diode, and the emitter of the transistor Q5 is grounded.
[0028] Furthermore, the control circuit further includes:
[0029] The control button circuit unit comprises: a start button electrically connected to the main control module, an infrared fill light enhancement control button, an infrared fill light reduction control button and a distance measurement start button.
[0030] Furthermore, the control button circuit unit also includes an isolation circuit; wherein
[0031] The isolation circuit includes a dual-body diode and a boost chip;
[0032] The common cathode of the dual-body diode Q3 is electrically connected to the start button, the anode of one diode is electrically connected to the power circuit, and the anode of the other diode is electrically connected to the start control terminal of the main control module.
[0033] Furthermore, the image acquisition circuit unit further includes: a camera circuit and a storage circuit;
[0034] The corresponding ports of the camera circuit and the storage circuit are respectively connected to the corresponding ports of the main control module;
[0035] The control button circuit unit is also provided with a storage module writing button and is electrically connected to the REC terminal of the main control module.
[0036] In a second aspect, the utility model provides a night vision device, including a control circuit of the target ranging night vision device as described above.
[0037] The beneficial effect of the utility model is that, through the control signal sent by the main control module, the ranging circuit unit sends the measurement data of the target, the main control module generates a digital image and a measured distance according to the infrared light signal of the image acquisition circuit unit, and combined with the fill light circuit, the real-time video recording can clearly display the ranging parameters, improve the circuit accuracy, and enhance the visibility of the target.
[0038] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by practicing the utility model. The purpose and other advantages of the utility model are realized and obtained by the structures particularly pointed out in the description and the drawings.
[0039] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0040] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0041] Figure 1 A circuit principle block diagram of a control circuit involved in some embodiments is shown;
[0042] Figure 2A circuit schematic diagram of a main control module involved in some embodiments is shown;
[0043] Figure 3 A circuit schematic diagram of a distance measurement circuit involved in some embodiments is shown;
[0044] Figure 4 A circuit schematic diagram of an angle sensor according to some embodiments is shown;
[0045] Figure 5 A circuit schematic diagram of a pulse transmission circuit involved in some embodiments is shown;
[0046] Figure 6 A circuit schematic diagram of a fill light control circuit involved in some embodiments is shown;
[0047] Figure 7 A circuit schematic diagram of a control key circuit unit involved in some embodiments is shown;
[0048] Figure 8 A circuit schematic diagram of a storage circuit according to some embodiments is shown. DETAILED DESCRIPTION
[0049] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0050] like Figure 1 and Figure 2 As shown, at least one embodiment provides a control circuit for a target ranging night vision device, including: a main control module; a ranging circuit unit, including: a ranging circuit and an angle detection circuit electrically connected to the main control module to output the ranging data and angle data of the target to the main control module; an image acquisition circuit unit, which includes a fill light control circuit and a camera, wherein the fill light control circuit is controlled by the main control module to adjust the fill light intensity, and the camera acquires the target image and sends it to the main control module. Figure 2 In the embodiment, CAMER1 is a camera, LCD1 is a liquid crystal display module, and both are electrically connected to a main control module. In some embodiments, the chip model used by the main control module is FM33LG046.
[0051] like Figure 3As shown, in some embodiments, the ranging circuit includes: an MS1003 chip, a signal receiving comparison circuit, wherein the signal receiving comparison circuit includes: a comparator; one end of the comparator's in-phase input end is connected to the laser signal reflected from the target through a capacitor C9, and the other end is connected to the light intensity signal emitted by the main control module through a resistor R11; the inverting input end of the comparator is connected to the analog reference voltage end of the main control module; the output end of the comparator outputs a stop pulse connected to the stop trigger end of the MS1003 chip; and the main control module is connected to the corresponding port of the MS1003 chip to obtain ranging data.
[0052] like Figure 4 As shown, in some embodiments, the ranging circuit unit also includes: an angle detection circuit; the angle detection circuit includes: an angle detection sensor. In some embodiments, a sensor with model Lis3D can be used, and its serial clock line and serial data line are electrically connected to the corresponding ports of the main control module through resistors R2 and resistor R4 respectively to obtain the angle data of the target photographed by the target ranging night vision device.
[0053] In some embodiments, the MS1003 chip constitutes a time measurement circuit and includes: a crystal oscillator circuit and a resistor R25; wherein the clock end of the MS1003 chip is electrically connected to the crystal oscillator circuit; the stop trigger end of the driver chip MS1003 is electrically connected to the output end of the comparator through the series resistor R25.
[0054] like Figure 5 As shown, the distance measurement circuit unit also includes: a pulse transmission circuit; the pulse transmission circuit includes: an AND gate circuit and a boost chip; in some embodiments, an AND gate circuit of model 74LS08 and a boost chip of model PW5328 can be used, and the two input ends of the AND gate circuit are connected to the trigger signal end of the MS1003 chip to generate a stable pulse signal; its output end is connected to the boost chip to maintain a stable output voltage. When the distance measurement function is started, the aiming frame and the current angle, target inclination, moving speed and other information will be displayed on the screen in real time.
[0055] like Figure 6 As shown, in some embodiments, the fill light control circuit includes: transistor Q5, resistor R28 and resistor R26; the light intensity signal terminal of the main control module is electrically connected to the base of the transistor Q5 through the resistor R28, and the power supply is connected to the collector of the transistor Q5 through the current limiting resistor and the light emitting diode, and the emitter of the transistor Q5 is grounded. Resistor R26 is used to limit the current to ensure that the LED will not be burned by the large current. When fill light is needed, the main control module outputs PWM signals with different duty cycles through the resistor R28 to control the opening time of the transistor Q5, so that the LED emits infrared light of different intensities.
[0056] like Figure 7 As shown, in some embodiments, the control circuit also includes a control button circuit unit, which includes a start button SW1 electrically connected to the main control module, an infrared fill light enhancement control button SW3, an infrared fill light reduction control button SW4 and a ranging start button SW5, and SW2 is a storage module write button.
[0057] Specifically, the control button circuit unit also includes an isolation circuit; wherein the isolation circuit includes a dual-body diode and a boost chip; the base of the dual-body diode Q2 is connected to the start button, its emitter is connected to the battery power supply, and the collector of the dual-body diode Q2 is connected to the boost chip to provide a stable voltage.
[0058] like Figure 1 and Figure 8 As shown, in some embodiments, the image acquisition circuit unit includes: a camera circuit and a storage circuit; the corresponding ports of the camera circuit and the storage circuit are respectively connected to the corresponding ports of the main control module; and the storage module write button is connected to the REC end of the main control module.
[0059] At least one embodiment further provides a night vision device, comprising a control circuit of the target ranging night vision device as described above.
[0060] In summary, the utility model obtains the measured distance of the target through the control signal sent by the ranging circuit unit through the main control module. The main control module generates a digital image according to the infrared light signal of the image acquisition circuit unit, and combines the fill light circuit to enable the digital image to clearly display the ranging parameters, thereby improving the circuit accuracy and enhancing the target visibility.
[0061] The various components selected in this application are all universal standard parts or parts known to technical personnel in this field. Their structures and principles can be known to technical personnel in this field through technical manuals or through conventional experimental methods. In addition, this control circuit does not involve improvements to software methods. The methods described in the scheme all belong to the scope of the prior art, and no improvements have been made to the above methods.
[0062] In several embodiments provided in the present application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the devices, methods and computer program products according to multiple embodiments of the utility model. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.
[0063] In addition, the functional modules in the various embodiments of the present invention may be integrated together to form an independent part, or each module may exist independently, or two or more modules may be integrated to form an independent part.
[0064] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. A control circuit for a target positioning and ranging night vision device, characterized in that: include: Main control module; The ranging circuit unit comprises: a ranging circuit and an angle detection circuit electrically connected to the main control module to output ranging data and angle data of the target to the main control module; The image acquisition circuit unit includes a fill light control circuit and a camera, wherein The fill light control circuit is controlled by the main control module to adjust the fill light intensity, and the camera captures the target image and sends it to the main control module.
2. The control circuit according to claim 1, characterized in that: The distance measurement circuit includes: MS1003 chip, signal receiving comparison circuit, wherein The signal receiving comparison circuit comprises: a comparator; The in-phase input terminal of the comparator is connected to the laser signal reflected from the target through the capacitor C9, and is also connected to the light intensity signal emitted by the main control module through the resistor R11; The inverting input terminal of the comparator obtains a reference voltage from an analog reference voltage terminal of the main control module; The output end of the comparator outputs a stop pulse which is connected to the stop trigger end of the MS1003 chip; and The main control module is connected to the corresponding port of the MS1003 chip to obtain the ranging data.
3. The control circuit according to claim 1, characterized in that: The distance measurement circuit unit further includes: an angle detection circuit; The angle detection circuit includes: an angle detection sensor, whose serial clock line and serial data line are electrically connected to corresponding ports of the main control module through resistors R2 and R4 respectively, so as to obtain angle data of the target photographed by the target ranging night vision device.
4. The control circuit according to claim 2, characterized in that: The MS1003 chip constitutes a time measurement circuit, and includes: a crystal oscillator circuit, a resistor R25; wherein The clock end of the MS1003 chip is electrically connected to the crystal oscillator circuit; The stop trigger terminal of the driving chip MS1003 is electrically connected to the output terminal of the comparator through the series resistor R25.
5. The control circuit according to claim 2, characterized in that: Also includes: The distance measuring circuit unit further includes: a pulse transmitting circuit; The pulse transmission circuit includes: an AND gate and a boost chip; wherein The START end of the MS1003 chip is connected to one end of the resistor R17, and the other end of the resistor R17 is respectively connected to the two input ends of the AND gate and the START end of the main control module; The START end of the MS1003 chip is also connected to one end of a resistor R18, and the other end of the resistor R18 is connected to the output end of the AND gate to output the shaped pulse waveform externally; and The boost chip generates high voltage for external output.
6. The control circuit according to claim 1, characterized in that: The fill light control circuit includes: a transistor Q5, a resistor R28 and a resistor R26; The light intensity signal terminal of the main control module is electrically connected to the base of the transistor Q5 through the resistor R28, and the power supply is connected to the collector of the transistor Q5 through the current limiting resistor and the light emitting diode, and the emitter of the transistor Q5 is grounded.
7. The control circuit according to claim 1, characterized in that: Also includes: The control button circuit unit comprises: a start button electrically connected to the main control module, an infrared fill light enhancement control button, an infrared fill light reduction control button and a distance measurement start button.
8. The control circuit according to claim 7, characterized in that: The control button circuit unit also includes an isolation circuit; wherein The isolation circuit includes a dual-body diode and a boost chip; The common cathode of the dual-body diode Q3 is electrically connected to the start button, the anode of one diode is electrically connected to the power circuit, and the anode of the other diode is electrically connected to the start control terminal of the main control module.
9. The control circuit according to claim 1, characterized in that: The image acquisition circuit unit also includes: a camera circuit and a storage circuit; The corresponding ports of the camera circuit and the storage circuit are respectively connected to the corresponding ports of the main control module; and The control button circuit unit is also provided with a storage module writing button and is electrically connected to the REC terminal of the main control module.
10. A night vision device, characterized in that: It comprises a control circuit of a target ranging night vision device as described in any one of claims 1 to 9.