Low-power ultra-strong light target search lamp

Abstract

The utility model discloses a low-power ultra-strong light target search lamp, and belongs to the technical field of marine lamps. Comprising a holder and a lamp body, a circuit board is arranged in the lamp body, the circuit board comprises a main control circuit, a power supply delay circuit electrically connected with the main control circuit, a motor driving circuit, a stroboscopic circuit and an external isolation circuit, the power supply delay circuit is used for performing delay conduction on a power supply, and the motor driving circuit is used for driving the stroboscopic circuit to rotate. The motor driving circuit controls the first motor and the second motor to operate according to signals output by the master control circuit, and the stroboscopic circuit carries out flicker control on a light source of the lamp body. The system has the advantages that one single-chip microcomputer is adopted to replace an existing main control structure adopting double single-chip microcomputers, the performance of the main control board is improved, the circuit is simplified, and meanwhile more on-chip resources can be provided for follow-up function adding; by adopting conventional and mass-produced elements and adopting an isolation mode, the automatic control of the lamp body is realized, the operation reliability is high, and the cost is effectively controlled.

Description

Technical Field

[0001] This utility model belongs to the field of marine lighting technology, specifically relating to a low-power, high-intensity target search light. Background Technology

[0002] A high-intensity searchlight is a type of lighting fixture with extremely strong focused light, boasting advantages such as high luminous efficiency, wide illumination range, and long illumination distance. It is an important law enforcement and search and rescue device for naval vessels. In existing technologies, the searchlight is typically mounted on a base mounted on the bow railing of the ship's bridge.

[0003] In recent years, with the increasing popularity of LED light sources, their application in searchlights has become increasingly mature. Low-power, high-intensity searchlights use a microcontroller as their core, employing a motor-driven reducer to achieve vertical and horizontal rotation. Current technology uses a 51-based microcontroller architecture, which is no longer adequate for modern needs. Specifically, its performance is low, typically requiring multiple microcontrollers to control handle signals, focus signals, and power control signals, resulting in complex circuitry and high cost; its control precision is low, unable to achieve accurate adjustment of rotation angle and speed; and it no longer provides the possibility for future expansion of more functions.

[0004] In view of the aforementioned existing technology, the applicant has made beneficial designs, and the technical solutions to be introduced below are produced in this context. Utility Model Content

[0005] The purpose of this invention is to provide a low-power, high-intensity target search lamp that simplifies the circuit structure, has low cost, and can achieve automatic control.

[0006] The purpose of this utility model is achieved as follows: a low-power, high-intensity target search light includes a gimbal and a light body rotatably supported on the gimbal. The light body is driven to rotate up and down by a first motor and to rotate left and right by a second motor. The light body has a circuit board, which includes a main control circuit, a power delay circuit, a motor drive circuit, a flash circuit, and an external isolation circuit electrically connected to the main control circuit. The power delay circuit is used to delay the power supply. The motor drive circuit controls the operation of the first and second motors according to the signal output by the main control circuit. The flash circuit controls the flashing of the light source of the light body. The external isolation circuit is used to isolate and convert the operation signals from the external operation panel, as well as the limit signals when the light body rotates to the limit position and when the focus is adjusted to the limit position, and output them to the main control circuit. It is also used to isolate and convert the signals output by the main control circuit and output them to the first and second motors.

[0007] In a specific embodiment of this utility model, the main control circuit includes a microcontroller U1, wherein the microcontroller U1 is a GD32F303RE.

[0008] In another specific embodiment of this utility model, the power delay circuit includes resistors R26, R27, R30, R31, R34, transistor T1, optocouplers Q10 and Q12, diodes D2 to D4, and relay JDQ1. Optocouplers Q10 and Q12 are IS357, and relay JDQ1 is HF3FF / 024-1HST. One end of resistor R26 and the anode of diode D3 are connected to an external operation panel to receive on / off signals. The other end of resistor R26 is connected to pin 1 of optocoupler Q10. Pin 4 of optocoupler Q10 is connected to one end of resistor R27. The cathode of diode D3 is connected to the cathodes of diodes D2 and D4, and pin 5 of relay JDQ1. Pins 1 and 3 of relay JDQ1 are connected to the power supply circuit. When the coil of relay JDQ1 is energized, pins 1 and 3 are connected to the power supply circuit. When pin 3 is closed, the power supply circuit is connected to the external switching power supply. Pin 4 of relay JDQ1 is left floating. When the coil of relay JDQ1 is de-energized, pins 1 and 4 of relay JDQ1 are closed. The positive terminal of diode D2 is connected to the collector of transistor T1. The base of transistor T1 is connected to one end of resistor R30 and one end of resistor R31. The other end of resistor R31 is connected to pin 4 of optocoupler Q12. Pin 2 of optocoupler Q12 is connected to one end of resistor R34. The other end of resistor R34 is connected to pin 22 of microcontroller U1 in the main control circuit. The emitter of transistor T1 and the other end of resistor R30 are connected to a +24V DC power supply. The other end of resistor R27 and pin 1 of optocoupler Q12 are connected to a +5V DC power supply. Pin 2 of optocoupler Q10, pin 3 of optocoupler Q12, the positive terminal of diode D4, and pin 2 of relay JDQ1 are all grounded.

[0009] In another specific embodiment of this utility model, the motor drive circuit includes capacitors C18, C20-28, resistors R8, R17, a first motor drive chip U6, a second motor drive chip U7, and interfaces J1 and J2. The first motor drive chip U6 and the second motor drive chip U7 are AT8870. Pins 2 and 3 of the first motor drive chip U6 are connected to pins 52 and 53 of the microcontroller U1 in the main control circuit. Pin 6 of the first motor drive chip U6 is connected to one end of capacitor C22 and pin 2 of interface J1. Pin 7 of the first motor drive chip U6 is connected to one end of resistor R8. Pin 8 of the first motor drive chip U6 is connected to one end of capacitor C18 and pin 1 of interface J1. Pins 2 and 3 of the second motor drive chip U7 are connected to pins 54 and 55 of the microcontroller U1. Pin 6 of the second motor drive chip U7 is connected to one end of capacitor C25 and pin 2 of interface J2. Pin 7 of the second motor drive chip U7 is connected to one end of resistor R17. Pin 8 of chip U7 is connected to one end of capacitor C23 and pin 1 of interface J2. Interface J1 is connected to the first motor driver, and interface J2 is connected to the second motor driver. Pin 4 of the first motor driver chip U6, one end of capacitor C24, pin 4 of the second motor driver chip U7, and one end of capacitor C28 are all connected to a +5V DC power supply. Pin 5 of the first motor driver chip U6, one end of capacitor C20, one end of capacitor C21, pin 5 of the second motor driver chip U7, one end of capacitor C26, and one end of capacitor C27 are all connected to a +5V DC power supply. The terminals are all connected to a +24V DC power supply. Pins 0 and 1 of the first motor driver chip U6, the other end of resistor R8, the other end of capacitor C18, pins 0 and 1 of the first motor driver chip U7, the other end of capacitor C24, the other end of capacitor C20, the other end of capacitor C21, the other end of capacitor C22, the other end of capacitor C23, the other end of resistor R17, the other end of capacitor C25, the other end of capacitor C26, the other end of capacitor C27, and the other end of capacitor C28 are all grounded.

[0010] In another specific embodiment of this utility model, the strobe output circuit includes optocouplers Q16, Q18, Q20, resistors R39, R42, R46, R49, capacitor C30, and interface J10. Optocouplers Q16, Q18, and Q20 are IS357. One end of resistor R39, one end of resistor R42, and one end of resistor R49 are connected to pins 24, 25, and 23 of the microcontroller U1 in the main control circuit, respectively. Pin 2 of optocoupler Q20 is connected to the other end of resistor R49, and pin 3 of optocoupler Q20 is connected to... One end of resistor R46 is connected to one end of capacitor C30 and pin 1 of interface J10. Pins 4 of optocoupler Q16 and Q18, and interface J10 are connected to the light source. Pins 1 and 2 of optocoupler Q16, the other end of resistor R39, pins 1 and 2 of optocoupler Q18, the other end of resistor R42, and pin 1 of optocoupler Q20 are connected to a +5V DC power supply. Pin 4 of optocoupler Q20 is connected to a +5V DC power supply. Pins 3 of optocoupler Q16, pin 3 of optocoupler Q18, the other end of capacitor C30, and pin 2 of interface J10 are grounded.

[0011] In another specific embodiment of this utility model, the external isolation circuit includes optocouplers Q1-Q9, Q11, Q13, Q14, Q15, Q17, Q19, and Q21, and resistors R6, R7, R9-R16, R18-R25, R28, R29, R32, R33, R35-R38, R40, R41, R43, R44, R48, and R50. Optocouplers Q1-Q9, Q11, Q13, Q14, Q15, Q17, Q19, and Q21 are IS357. Pin 1 of optocoupler Q3 is connected to one end of resistor R11. Pin 4 of optocoupler Q3 and one end of resistor R12 are connected to pin 56 of the microcontroller U1 in the main control circuit. Pin 4 of optocoupler Q5 is connected to resistor R12. One end of R16 is connected to pin 57 of the microcontroller U1; pin 4 of optocoupler Q7 and one end of resistor R21 are connected to pin 58 of the microcontroller U1; pin 4 of optocoupler Q8 and one end of resistor R23 are connected to pin 59 of the microcontroller U1; pin 4 of optocoupler Q9 and one end of resistor R25 are connected to pin 26 of the microcontroller U1; pin 4 of optocoupler Q11 and one end of resistor R29 are connected to pin 27 of the microcontroller U1; pin 4 of optocoupler Q13 and one end of resistor R33 are connected to pin 29 of the microcontroller U1; the other end of resistor R11, one end of resistor R15, one end of resistor R20, one end of resistor R22, one end of resistor R24, one end of resistor R28, and one end of resistor R32 are connected to the external operation panel, corresponding to the receiving... The external control panel outputs seven control signals: lamp body up rotation, lamp body down rotation, lamp body left rotation, lamp body right rotation, light source forward focus, light source backward focus, and light source flashing. The other ends of resistors R12, R16, R21, R23, R25, R29, and R33 are connected to a +5V DC power supply. One end of resistors R36, R38, R41, R44, and R50 is connected to an external motor starter, corresponding to five limit signals: horizontal position limit signal, up rotation limit signal, down rotation limit signal, forward focus limit signal, and backward focus limit signal. Pin 2 of optocoupler Q21 is connected to the other end of resistor R50. Pins 1 and 2 of optocoupler Q14, the other end of resistor R36, pins 1 and 2 of optocoupler Q15, the other end of resistor R38, pins 1 and 2 of optocoupler Q17, the other end of resistor R41, pins 1 and 2 of optocoupler Q19, the other end of resistor R44, and pin 1 of optocoupler Q21 are all connected to a +24V DC power supply. Pin 4 of optocoupler Q14 and one end of resistor R35 are connected to pin 62 of the microcontroller U1. Pin 4 of optocoupler Q15 and one end of resistor R37 are connected to pin 50 of the microcontroller U1. Pin 4 of optocoupler Q17 and one end of resistor R40 are connected to pin 51 of the microcontroller U1. Pin 4 of optocoupler Q19 and one end of resistor R43 are connected to pin 20 of the microcontroller U1.Pin 4 of optocoupler Q21 and one end of resistor R48 are connected to pin 21 of microcontroller U1. Pins 2 and 3 of optocoupler Q3, pins 1, 2, and 3 of optocoupler Q5, the other end of resistor R15, pins 1, 2, and 3 of optocoupler Q7, the other end of resistor R20, pins 1, 2, and 3 of optocoupler Q8, the other end of resistor R22, pins 1, 2, and 3 of optocoupler Q9, the other end of resistor R24, pins 1, 2, and 3 of optocoupler Q11, the other end of resistor R28, pins 1, 2, and 3 of optocoupler Q13, the other end of resistor R32, pin 3 of optocoupler Q14, pin 3 of optocoupler Q15, pin 3 of optocoupler Q17, pin 3 of optocoupler Q19, and pin 3 of optocoupler Q21 are all grounded. One end of resistor R7, one end of resistor R9, one end of resistor R13, and one end of resistor R18 are connected to pins 52, 53, 54, and 5 of microcontroller U1, respectively. Pin 5, the other end of resistor R7 is connected to pin 2 of optocoupler Q1, pin 3 of optocoupler Q1 is connected to one end of resistor R6, the other end of resistor R9 is connected to pin 2 of optocoupler Q2, pin 3 of optocoupler Q2 is connected to one end of resistor R10, the other end of resistor R13 is connected to pin 2 of optocoupler Q4, pin 3 of optocoupler Q4 is connected to one end of resistor R14, the other end of resistor R18 is connected to pin 2 of optocoupler Q6, pin 3 of optocoupler Q6 is connected to one end of resistor R19, the other ends of resistors R6 and R10 are connected to the first motor driver, the other ends of resistors R14 and R19 are connected to the second motor driver, pins 1 of optocouplers Q1, Q2, Q4, and Q6 are all connected to a +5V DC power supply, and pins 4 of optocouplers Q1, Q2, Q4, and Q6 are all connected to a +5V DC power supply.

[0012] Compared with the prior art, this utility model has the following advantages due to the above-mentioned structure: it uses a single microcontroller to replace the existing dual-microcontroller main control structure, which improves the performance of the main control board, simplifies the circuit, and provides more on-chip resources for subsequent function additions; it uses conventional and mass-produced components and adopts isolation to realize automatic control of the lamp body, which has high operational reliability and effectively controls costs. Attached Figure Description

[0013] Figure 1 This is a circuit block diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the electrical connections of the main control circuit described in this utility model;

[0015] Figure 3 This is a schematic diagram of the electrical connections of the power delay circuit described in this utility model;

[0016] Figure 4 This is a schematic diagram of the electrical connections of the power supply circuit described in this utility model;

[0017] Figure 5 This is a schematic diagram of the electrical connections of the motor drive circuit described in this utility model;

[0018] Figure 6 This is a schematic diagram of the electrical connections of the strobe output circuit described in this utility model;

[0019] Figure 7 This is a schematic diagram of the electrical connections of the external isolation circuit described in this utility model. Detailed Implementation

[0020] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. However, the description of the embodiments is not a limitation on the technical solution. Any formal but not substantive changes made based on the concept of this utility model should be considered within the protection scope of this utility model.

[0021] In the following description, all directional (or orientational) concepts involving up, down, left, right, front, and back refer to the position of the figure being described, and are intended to facilitate public understanding. Therefore, they should not be construed as a special limitation on the technical solution provided by this utility model.

[0022] Please see Figure 1 This utility model relates to a low-power, high-intensity target search light, where low power currently mainly refers to 40W and 50W. The target search light includes a pan-tilt unit and a light body rotatably supported on the pan-tilt unit. The light body is driven to rotate up and down by a first motor and to rotate left and right by a second motor. The specific rotation and focusing structures of the light body can be found in our patent application No. 202110838231.X, which describes a "long-range searchlight," and will not be elaborated upon in this embodiment. The light body includes a lamp tube containing a circuit board. The circuit board includes a main control circuit, a power delay circuit, a motor drive circuit, a flash circuit, and an external isolation circuit electrically connected to the main control circuit. The power delay circuit delays the power supply to protect the external power source. The motor drive circuit controls the first and second motor drivers based on the signal output from the main control circuit, thereby controlling the operation of the first and second motors. The flash circuit controls the flashing of the light source, improving the search light's visibility. The external isolation circuit is used to isolate and convert the operation signals from the external operation panel, as well as the limit signals when the lamp body is rotated to the limit position and when the focus is adjusted to the limit position, and then output them to the main control circuit. It is also used to isolate and convert the signals output by the main control circuit and then output them to the first and second motor drivers.

[0023] Please see Figure 2The main control circuit includes a microcontroller U1 and related peripheral circuits. The figure illustrates the functions of each pin of the microcontroller U1. As the core chip of the main control circuit, the microcontroller U1 needs to process external operation signals, focusing signals, power control signals, and strobe signals. Since the performance of existing searchlight microcontrollers is relatively low, two microcontrollers are used to control these signals. In this embodiment, the microcontroller U1 used is the GD32F303RE, a domestically produced high-performance chip that can replace the existing two low-end microcontroller chips. This simplifies the circuit, improves consistency, significantly enhances the performance of the main control circuit, and provides more on-chip resources for future functional additions. The signal processing of the microcontroller U1 in this embodiment is its own functional application and is not within the scope of this improvement.

[0024] Please see Figure 3 The power delay circuit includes resistors R26, R27, R30, R31, and R34, transistor T1, optocouplers Q10 and Q12, diodes D2 to D4, and relay JDQ1. Optocouplers Q10 and Q12 are IS357, and relay JDQ1 is HF3FF / 024-1HST. Pin 2 of optocoupler Q12 is connected to pin 22 of the microcontroller U1 via resistor R34. Relay JDQ1 serves as the power interface circuit; pin 1 is the common terminal, pin 3 is a normally open contact, and pin 4 is a normally closed contact. Pins 1 and 3 of relay JDQ1 are connected to the power supply circuit. When the coil of relay JDQ1 is energized, pins 1 and 3 close, and the power supply circuit connects to the switching power supply. Pin 4 of relay JDQ1 is left floating. When the coil of relay JDQ1 is de-energized, pins 1 and 4 of relay JDQ1 close.

[0025] Please see Figure 4 This utility model also includes a power supply circuit. In the diagram, the DC1 interface receives 24V DC power during the delay when the relay JDQ1 is energized, while the DC2 interface connects to a 24V switching power supply. The power supply circuit provides +24V, +5V, and +5V DC power to other circuits. In the diagram, U4 is a regulated power supply module, and U5 is a three-terminal voltage regulator.

[0026] Please see Figure 5The motor drive circuit includes capacitors C18, C20-28, resistors R8 and R17, a first motor drive chip U6, a second motor drive chip U7, and interfaces J1 and J2. The first motor drive chip U6 and the second motor drive chip U7 are AT8870. Pins 2 and 3 of the first motor driver chip U6 are connected to pins 52 and 53 of the microcontroller U1 in the main control circuit. Pin 6 of the first motor driver chip U6 is connected to one end of capacitor C22 and pin 2 of interface J1. Pin 8 of the first motor driver chip U6 is connected to one end of capacitor C18 and pin 1 of interface J1. Pins 2 and 3 of the second motor driver chip U7 are connected to pins 54 and 55 of the microcontroller U1. Pin 6 of the second motor driver chip U7 is connected to one end of capacitor C25 and pin 2 of interface J2. Pin 8 of the second motor driver chip U7 is connected to one end of capacitor C23 and pin 1 of interface J2. Interface J1 is connected to the first motor driver, and interface J2 is connected to the second motor driver. The first motor driver drives the first motor, and the second motor driver drives the second motor. The first motor driver chip U6 and the second motor driver chip U7 convert the logic signals of the microcontroller U1 into pulse signals that the motor drivers can recognize.

[0027] Please see Figure 6 The strobe output circuit includes optocouplers Q16, Q18, and Q20, resistors R39, R42, R46, and R49, capacitor C30, and interface J10. Optocouplers Q16, Q18, and Q20 are IS357. One end of resistor R39, one end of resistor R42, and one end of resistor R49 are connected to pins 24, 25, and 23 of the microcontroller U1 in the main control circuit. Pins 4 of optocoupler Q16 and Q18, and interface J10 are connected to the light source control board, which in turn connects to the light source and controls its illumination mode. Optocouplers Q16, Q18, and Q20 provide electrical isolation. The strobe output circuit isolates and converts the control signal output by the microcontroller U1 into a control signal that the lamp body can recognize, enabling the lamp body to flash at a certain frequency.

[0028] Please see Figure 7 The external isolation circuit includes optocouplers Q1-Q9, Q11, Q13, Q14, Q15, Q17, Q19, and Q21, and resistors R6, R7, R9-R16, R18-R25, R28, R29, R32, R33, R35-R38, R40, R41, R43, R44, R48, and R50. The optocouplers Q1-Q9, Q11, Q13, Q14, Q15, Q17, Q19, and Q21 are IS357 and are used to achieve electrical isolation.

[0029] The optocouplers Q3, Q5, Q7, Q8, Q9, Q11, and Q13 constitute the input isolation circuit of the operation panel, which isolates and converts the search light operation control signal given by the operation panel into a logic signal that the microcontroller U1 can recognize. Specifically, pin 4 of optocoupler Q3 and one end of resistor R12 are connected to pin 56 of microcontroller U1 in the main control circuit; pin 4 of optocoupler Q5 and one end of resistor R16 are connected to pin 57 of microcontroller U1; pin 4 of optocoupler Q7 and one end of resistor R21 are connected to pin 58 of microcontroller U1; pin 4 of optocoupler Q8 and one end of resistor R23 are connected to pin 59 of microcontroller U1; pin 4 of optocoupler Q9 and one end of resistor R25 are connected to pin 26 of microcontroller U1; and pin 4 of optocoupler Q11 and one end of resistor R29 are connected to... Pin 27 of the microcontroller U1, pin 4 of the optocoupler Q13, and one end of resistor R33 are connected to pin 29 of the microcontroller U1. The other end of resistor R11, one end of resistor R15, one end of resistor R20, one end of resistor R22, one end of resistor R24, one end of resistor R28, and one end of resistor R32 are connected to the external operation panel, which receives seven control signals output from the external operation panel, namely, lamp body up rotation, lamp body down rotation, lamp body left rotation, lamp body right rotation, light source forward focus, light source backward focus, and light source strobe.

[0030] The optocouplers Q14, Q15, Q17, Q19, and Q21 constitute a limit input isolation circuit, which isolates and converts the limit signals corresponding to the extreme positions of the lamp body during vertical rotation, horizontal rotation, and focusing into logic signals that the microcontroller U1 can recognize. This signal causes the microcontroller U1 to stop outputting the first and second motor operation pulses. Specifically, one end of resistor R36, one end of resistor R38, one end of resistor R41, one end of resistor R44, and one end of resistor R50 are connected to an external motor starter, corresponding to receiving five limit signals: horizontal position limit signal, upward rotation limit signal, downward rotation limit signal, forward focusing limit signal, and backward focusing limit signal. Pin 4 of optocoupler Q14 and one end of resistor R35 are connected to pin 62 of microcontroller U1. Pin 4 of optocoupler Q15 and one end of resistor R37 are connected to pin 50 of microcontroller U1. Pin 4 of optocoupler Q17 and one end of resistor R40 are connected to pin 51 of microcontroller U1. Pin 4 of optocoupler Q19 and one end of resistor R43 are connected to pin 20 of microcontroller U1. Pin 4 of optocoupler Q21 and one end of resistor R48 are connected to pin 21 of microcontroller U1.

[0031] The optocouplers Q1, Q2, Q4, and Q6 constitute a motor drive output isolation circuit, converting the logic signals of the microcontroller U1 into pulse signals that can be recognized by the first and second motor drivers. Specifically, one end of resistor R7, one end of resistor R9, one end of resistor R13, and one end of resistor R18 are respectively connected to pins 52, 53, 54, and 55 of the microcontroller U1; resistors R6 and R10 are connected to the first motor driver; and resistors R14 and R19 are connected to the second motor driver.

[0032] This invention achieves automatic control of the lamp body by using conventional and inexpensive electrical components and effective isolation, resulting in high operational reliability and fulfilling the invention's objective.

Claims

1. A low-power, high-intensity target search light, comprising a gimbal and a light body rotatably supported on the gimbal, wherein the light body is driven to rotate up and down by a first motor and to rotate left and right by a second motor, characterized in that: The lamp body has a circuit board, the circuit board includes a main control circuit, a power delay circuit, a motor drive circuit, a stroboscopic circuit and an external isolation circuit electrically connected with the main control circuit, wherein the power delay circuit is used for delaying the conduction of the power, the motor drive circuit controls the operation of the first and second motors according to the signal output by the main control circuit, the stroboscopic circuit controls the flicker of the light source of the lamp body, and the external isolation circuit is used for isolating and converting the operation signal of the external operation panel and the limit signal when the lamp body rotates to the limit position and when the focus is adjusted to the limit position, and then outputting the signals to the main control circuit, and is also used for isolating and converting the signal output by the main control circuit and then outputting the signal to the first and second motors.

2. A low-power super-bright light target searchlight according to claim 1, characterized in that: The main control circuit includes a single-chip microcomputer U1, and the single-chip microcomputer U1 is GD32F303RE.

3. A low power super-bright light target searchlight according to claim 2, characterized in that: The power delay circuit includes resistors R26, R27, R30, R31 and R34, a triode T1, optocouplers Q10 and Q12, diodes D2-D4 and a relay JDQ1, wherein the optocouplers Q10 and Q12 are IS357, the relay JDQ1 is HF3FF / 024-1HST, one end of the resistor R26 and the positive electrode of the diode D3 are connected with the external operation panel to receive the on-off signal, the other end of the resistor R26 is connected with the 1 pin of the optocoupler Q10, one end of the resistor R27 is connected with the 4 pin of the optocoupler Q10, the negative electrode of the diode D3 is connected with the negative electrode of the diode D2, the negative electrode of the diode D4 and the 5 pin of the relay JDQ1, the 1 and 3 pins of the relay JDQ1 are connected with a power circuit, the 1 and 3 pins of the relay JDQ1 are closed when the coil of the relay JDQ1 is electrified, the power circuit is connected with an external switch power supply, the 4 pin of the relay JDQ1 is suspended, the 1 and 4 pins of the relay JDQ1 are closed when the coil of the relay JDQ1 is de-energized, the positive electrode of the diode D2 is connected with the collector of the triode T1, one end of the resistor R30 and one end of the resistor R31 are connected with the base of the triode T1, the other end of the resistor R31 is connected with the 4 pin of the optocoupler Q12, one end of the resistor R34 is connected with the 2 pin of the optocoupler Q12, the other end of the resistor R34 is connected with the 22 pin of the single-chip microcomputer U1 in the main control circuit, the emitter of the triode T1 and the other end of the resistor R30 are commonly connected with a +24V direct current power supply, the other end of the resistor R27 and the 1 pin of the optocoupler Q12 are connected with a +5V direct current power supply, the 2 pin of the optocoupler Q10, the 3 pin of the optocoupler Q12, the positive electrode of the diode D4 and the 2 pin of the relay JDQ1 are commonly connected with the ground.

4. A low power super-bright light target searchlight according to claim 2, characterized in that: The motor driving circuit comprises capacitors C18, C20-C28, resistors R8, R17, a first motor driving chip U6, a second motor driving chip U7 and interfaces J1, J2, the first motor driving chip U6 and the second motor driving chip U7 adopt AT8870, the 2, 3 pins of the first motor driving chip U6 correspond to the 52, 53 pins of the single-chip microcomputer U1 in the main control circuit, the 6 pin of the first motor driving chip U6 is connected with one end of the capacitor C22 and the 2 pin of the interface J1, the 7 pin of the first motor driving chip U6 is connected with one end of the resistor R8, the 8 pin of the first motor driving chip U6 is connected with one end of the capacitor C18 and the 1 pin of the interface J1, the 2, 3 pins of the second motor driving chip U7 correspond to the 54, 55 pins of the single-chip microcomputer U1, the 6 pin of the second motor driving chip U7 is connected with one end of the capacitor C25 and the 2 pin of the interface J2, the 7 pin of the second motor driving chip U7 is connected with one end of the resistor R17, the 8 pin of the second motor driving chip U7 is connected with one end of the capacitor C23 and the 1 pin of the interface J2, the interface J1 is connected with the first motor driver, the interface J2 is connected with the second motor driver, the 4 pin of the first motor driving chip U6, one end of the capacitor C24, the 4 pin of the second motor driving chip U7 and one end of the capacitor C28 are commonly connected with the +5V1 direct current power supply, the 5 pin of the first motor driving chip U6, one end of the capacitor C20, one end of the capacitor C21, the 5 pin of the second motor driving chip U7, one end of the capacitor C26 and one end of the capacitor C27 are commonly connected with the +24V direct current power supply, the 0 pin, 1 pin of the first motor driving chip U6, the other end of the resistor R8, the other end of the capacitor C18, the 0 pin, 1 pin of the first motor driving chip U7, the other end of the capacitor C24, the other end of the capacitor C20, the other end of the capacitor C21, the other end of the capacitor C22, the other end of the capacitor C23, the other end of the resistor R17, the other end of the capacitor C25, the other end of the capacitor C26, the other end of the capacitor C27 and the other end of the capacitor C28 are commonly connected with the ground.

5. A low power super-bright light target searchlight according to claim 2, wherein: The strobe output circuit includes optocouplers Q16, Q18, Q20, resistors R39, R42, R46, R49, capacitor C30 and interface J10, one end of resistor R39, one end of resistor R42 and one end of resistor R49 correspond to 24, 25, 23 pins of single-chip microcomputer U1 in the master control circuit, 2 pin of optocoupler Q20 connects to the other end of resistor R49, 3 pin of optocoupler Q20 connects to one end of resistor R46, the other end of resistor R46 connects to one end of capacitor C30 and 1 pin of interface J10, 4 pin of optocoupler Q16, 4 pin of optocoupler Q18 and light source of interface J10, 1, 2 pins of optocoupler Q16, the other end of resistor R39, 1, 2 pins of optocoupler Q18, the other end of resistor R42 and 1 pin of optocoupler Q20 commonly connect to +5V direct current power supply, 4 pin of optocoupler Q20 connects to +5V1 direct current power supply, 3 pin of optocoupler Q16, 3 pin of optocoupler Q18, the other end of capacitor C30 and 2 pin of interface J10 commonly connect to ground.

6. A low power super-bright light target searchlight according to claim 2, characterized in that: The external isolation circuit comprises optocouplers Q1-Q9, Q11, Q13, Q14, Q15, Q17, Q19, Q21, and resistors R6, R7, R9-R16, R18-R25, R28, R29, R32, R33, R35-R38, R40, R41, R43, R44, R48, R50. The optocouplers Q1-Q9, Q11, Q13, Q14, Q15, Q17, Q19, Q21 are IS357. The 1-pin of the optocoupler Q3 is connected to one end of the resistor R11, the 4-pin of the optocoupler Q3 is connected to one end of the resistor R12, and the 56-pin of the single-chip microcomputer U1 in the main control circuit is connected to the other end of the resistor R12. The 4-pin of the optocoupler Q5 is connected to one end of the resistor R16, and the 57-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R16. The 4-pin of the optocoupler Q7 is connected to one end of the resistor R21, and the 58-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R21. The 4-pin of the optocoupler Q8 is connected to one end of the resistor R23, and the 59-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R23. The 4-pin of the optocoupler Q9 is connected to one end of the resistor R25, and the 26-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R25. The 4-pin of the optocoupler Q11 is connected to one end of the resistor R29, and the 27-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R29. The 4-pin of the optocoupler Q13 is connected to one end of the resistor R33, and the 29-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R33. The other end of the resistor R11, one end of the resistor R15, one end of the resistor R20, one end of the resistor R22, one end of the resistor R24, one end of the resistor R28, and one end of the resistor R32 are connected to an external operation panel, and correspondingly receive seven control signals output by the external operation panel, which are respectively lamp body up-turn, lamp body down-turn, lamp body left-turn, lamp body right-turn, light source forward focusing, light source backward focusing, and light source frequency flashing. The other end of the resistor R12, the other end of the resistor R16, the other end of the resistor R21, the other end of the resistor R23, the other end of the resistor R25, the other end of the resistor R29, and the other end of the resistor R33 are commonly connected to a +5V DC power supply. One end of the resistor R36, one end of the resistor R38, one end of the resistor R41, one end of the resistor R44, and one end of the resistor R50 are connected to an external motor starter, and correspondingly receive five limit signals, which are respectively horizontal position limit signal, up-turn limit signal, down-turn limit signal, forward focusing limit signal, and backward focusing limit signal. The other end of the resistor R50 is connected to the 2-pin of the optocoupler Q21. The 1-pin and the 2-pin of the optocoupler Q14, the other end of the resistor R36, the 1-pin and the 2-pin of the optocoupler Q15, the other end of the resistor R38, the 1-pin and the 2-pin of the optocoupler Q17, the other end of the resistor R41, the 1-pin and the 2-pin of the optocoupler Q19, the other end of the resistor R44, and the 1-pin of the optocoupler Q21 are commonly connected to a +24V DC power supply. The 4-pin of the optocoupler Q14 is connected to one end of the resistor R35, and the 62-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R35. The 4-pin of the optocoupler Q15 is connected to one end of the resistor R37, and the 50-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R37. The 4-pin of the optocoupler Q17 is connected to one end of the resistor R40, and the 51-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R40. The 4-pin of the optocoupler Q19 is connected to one end of the resistor R43, and the 20-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R43. The 4-pin of the optocoupler Q21 is connected to one end of the resistor R48, and the 21-pin of the single-chip microcomputer U1 is connected to the other end of the resistor R48.The other end of the light coupling Q3, 3 feet, the light coupling Q5, 1, 2, 3 feet, the other end of the resistance R15, the other end of the light coupling Q7, 1, 2, 3 feet, the other end of the resistance R20, the other end of the light coupling Q8, 1, 2, 3 feet, the other end of the resistance R22, the other end of the light coupling Q9, 1, 2, 3 feet, the other end of the resistance R24, the other end of the light coupling Q11, 1, 2, 3 feet, the other end of the resistance R28, the other end of the light coupling Q13, 1, 2, 3 feet, the other end of the resistance R32, the 3 feet of the light coupling Q14, the 3 feet of the light coupling Q15, the 3 feet of the light coupling Q17, the 3 feet of the light coupling Q19, the 3 feet of the light coupling Q21 are grounded together; The one end of the resistance R7, the one end of the resistance R9, the one end of the resistance R13 and the one end of the resistance R18 are respectively connected to the 52, 53, 54, 55 feet of the single-chip microcomputer U1, the other end of the resistance R7 is connected to the 2 feet of the light coupling Q1, the 3 feet of the light coupling Q1 is connected to the one end of the resistance R6, the other end of the resistance R9 is connected to the 2 feet of the light coupling Q2, the 3 feet of the light coupling Q2 is connected to the one end of the resistance R10, the other end of the resistance R13 is connected to the 2 feet of the light coupling Q4, the 3 feet of the light coupling Q4 is connected to the one end of the resistance R14, the other end of the resistance R18 is connected to the 2 feet of the light coupling Q6, the 3 feet of the light coupling Q6 is connected to the one end of the resistance R19, the other end of the resistance R6 and the other end of the resistance R10 are connected to the first motor driver, the other end of the resistance R14 and the other end of the resistance R19 are connected to the second motor driver, the 1 feet of the light coupling Q1, the 1 feet of the light coupling Q2, the 1 feet of the light coupling Q4 and the 1 feet of the light coupling Q6 are connected to +5V direct current power supply, the 4 feet of the light coupling Q1, the 4 feet of the light coupling Q2, the 4 feet of the light coupling Q4 and the 4 feet of the light coupling Q6 are connected to +5V1 direct current power supply.

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