Laser ranging direct aiming mirror circuit system

Abstract

The utility model relates to a laser ranging direct aiming mirror circuit system, belongs to the technical field of laser ranging, and solves the problem of low safety of a laser ranging circuit in the prior art. According to the laser ranging direct aiming mirror circuit system, a ranging control circuit is connected with a laser driving circuit, so that the laser driving circuit generates detection laser emitted to a target object; the detection amplification circuit is connected with the ranging counting circuit and is used for receiving a target echo electric signal corresponding to the detection laser and transmitting the target echo electric signal to the ranging counting circuit; the ranging counting circuit is connected with the laser driving circuit and the ranging control circuit, and is used for receiving a detection initial signal corresponding to the detection laser, counting according to the detection initial signal and the target echo electric signal, and transmitting a counting result to the ranging control circuit; and the distance measurement control circuit determines the distance of the target object according to the counting result. And the circuit safety of laser ranging is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser distance measurement, in particular to a laser distance measurement direct-aiming mirror circuit system. Background Art

[0002] Laser ranging is the use of laser to accurately measure the distance to the target. When working, the laser rangefinder emits a laser beam to the target, and the photoelectric element receives the laser beam reflected by the target. The timer measures the time from the emission to the reception of the laser beam, and calculates the distance from the observer to the target.

[0003] The laser ranging circuit in the prior art is greatly affected by the environment when performing ranging, resulting in low safety of the laser ranging circuit and easy occurrence of large ranging errors.

[0004] Therefore, a new technical solution for laser ranging is urgently needed. Utility Model Content

[0005] In view of the above analysis, the utility model aims to provide a laser ranging direct aiming mirror circuit system to solve the problem of low safety of the laser ranging circuit in the prior art.

[0006] The purpose of this utility model is mainly achieved through the following technical solutions:

[0007] The laser distance measurement direct aiming mirror circuit system comprises a laser driving circuit, a detection amplification circuit, a distance measurement control circuit and a distance measurement counting circuit;

[0008] The distance measurement control circuit is connected to the laser driving circuit, so that the laser driving circuit generates a detection laser that is emitted toward the target object;

[0009] The detection amplifier circuit is connected to the ranging counting circuit, and is used to receive the target echo electrical signal corresponding to the detection laser, and transmit the target echo electrical signal to the ranging counting circuit;

[0010] The ranging counting circuit is connected to the laser driving circuit and the ranging control circuit, and is used to receive the detection initial signal corresponding to the detection laser, and count according to the detection initial signal and the target echo electrical signal, and transmit the counting result to the ranging control circuit; the ranging control circuit determines the distance of the target object according to the counting result.

[0011] Based on the further improvement of the above scheme, the laser driving circuit includes a laser power supply Power1, an energy storage capacitor C1, a trigger coil T01 and a laser LASER1;

[0012] The high-voltage trigger port of the laser power supply Power1 is used to receive the detection command of the ranging control circuit, and the pulse output port outputs a pulse signal. The pulse signal is input to the primary winding of the trigger coil T01, and is transformed through the secondary winding to output a high-voltage pulse. The high-voltage pulse acts on the control port of the laser LASER1, so that the laser LASER1 emits a detection laser to the target object;

[0013] The high-voltage output port of the laser power supply Power1 is connected to one end of the energy storage capacitor C1 and the VCC power supply port of the laser LASER1; the high-voltage grounding port of the laser power supply Power1, the other end of the energy storage capacitor C1, the grounding port of the laser LASER1, and the grounding ports of the primary winding and the secondary winding of the trigger coil T01 are used for grounding.

[0014] Based on the further improvement of the above scheme, the ranging control circuit includes a processor U3; the processor U3 is JCER32F103Q-100;

[0015] The PC4 port of the processor U3 is connected to the charge storage port of the laser driving circuit;

[0016] The PC5 port of the processor U3 is connected to the high voltage trigger port of the laser driving circuit;

[0017] The PE7 port of the processor U3 is connected to the counting result output port of the ranging counting circuit.

[0018] Based on the further improvement of the above scheme, the detection amplifier circuit includes a detection module U0, a first capacitor C58, a first operational amplifier U13, a second capacitor C64, a second operational amplifier U14, a first resistor R47, a second resistor R50, a third resistor R56, a comparator U18, a third capacitor C73, a monostable trigger U21A, a fourth capacitor C76 and a fourth resistor R58;

[0019] The detection signal output port of the detection module U0 is connected to one end of the first capacitor C58; the other end of the first capacitor C58 is connected to the IN+ port and IN- port of the first operational amplifier U13; the OUT- port of the first operational amplifier U13 is connected to one end of the second capacitor C64; the other end of the second capacitor C64 is connected to the IN+ port and IN- port of the second operational amplifier U14; the OUT- port of the second operational amplifier U14 is connected to the VIN+ port of the comparator U18; the VIN- port of the comparator U18 is connected to the VCC port according to The first resistor R47, the second resistor R50 and the third resistor R56 are connected at the same time; the VOUT+ port of the comparator U18 is connected to one end of the third capacitor C73, and the other end of the third capacitor C73 is connected to the A port of the monostable trigger U21A; the B port and the CLR port of the monostable trigger U21A are simultaneously connected to one end of the fourth resistor R58; the other end of the fourth resistor R58 is simultaneously connected to one end of the fourth capacitor C76 and the Rext / Cext port of the monostable trigger U21A; the other end of the fourth capacitor C76 is connected to the monostable trigger U21A

[0020] —The Cext port of the monostable trigger U21A, the Q port of which is connected to the end count IO port of the ranging counting circuit.

[0021] Based on the further improvement of the above scheme, the ranging counting circuit includes CPLD U8; CPLD U8 is EPM7512AETI144-10;

[0022] The end count IO port of CPLD U8 is connected to the monostable trigger U21A port;

[0023] The start count IO port of CPLD U8 is connected to the control port of laser LASER1;

[0024] The counting result output port of the CPLD U8 is connected to the PE7 port of the processor U3.

[0025] Based on the further improvement of the above scheme, the laser rangefinder direct aiming mirror circuit system also includes an eyepiece heating circuit, and the eyepiece heating circuit includes a heating switch SW1 and a heating wire R0;

[0026] The positive and negative electrodes of the eyepiece heating circuit are respectively connected to the positive and negative electrodes of the first external power supply, and a heating switch SW1 and a heating wire R0 are sequentially connected in series between the positive and negative electrodes, and the heating wire R0 is arranged on the eyepiece.

[0027] Based on the further improvement of the above scheme, the laser rangefinder direct aiming mirror circuit system also includes a graticule lighting circuit, and the graticule lighting circuit includes a graticule lighting switch SW2, a current limiting resistor R1 and a light emitting diode D0;

[0028] The positive electrode and the negative electrode of the division lighting circuit are respectively connected to the positive electrode and the negative electrode of the second external power supply, and the division lighting switch SW2, the current limiting resistor R1 and the light emitting diode D0 are connected in series between the positive electrode and the negative electrode.

[0029] Based on the further improvement of the above scheme, the laser ranging direct aiming mirror circuit system also includes a power supply filtering protection circuit, and the power supply filtering protection circuit includes a power switch SW0, a filter filter1, a fuse fuse1, a Schottky diode D1 and a TVP diode D2;

[0030] The positive electrode and negative electrode of the power supply filter protection circuit are respectively connected to the positive electrode and negative electrode of the third external power supply;

[0031] The positive electrode of the power supply filtering protection circuit is connected to one end of the power switch SW0, and the other end of the power switch SW0 is connected to the +VIN port of the filter filter1; the +Vout port of the filter filter1 is connected to one end of the fuse fuse1, and the other end of the fuse fuse1 is connected to the positive electrode of the Schottky diode D1; the negative electrode of the Schottky diode D1 is connected to the negative electrode of the TVP diode D2, and the positive electrode of the TVP diode D2 is connected to the -Vout port of the filter filter1.

[0032] Based on the further improvement of the above solution, the fuse fuse1 is J-PB2012L000-5A, and the filter filter1 is SFJLC-19193.

[0033] Based on the further improvement of the above solution, the Schottky diode D1 is DK50 and the TVP diode D2 is SY6053AS.

[0034] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0035] 1. The laser driving circuit is directly connected to the ranging control circuit, and the ranging counting circuit is connected to the detection amplifier circuit, which enhances the environmental adaptability of the laser ranging circuit system and improves the circuit safety of the laser ranging;

[0036] 2. The eyepiece of the laser is heated by the eyepiece heating circuit to improve the clarity of the eyepiece during distance measurement, and the graticule is illuminated by the graticule lighting circuit so that the graticule angle scale markings can be clearly seen.

[0037] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0039] Figure 1 A schematic diagram of the structure of a laser rangefinder direct aiming mirror circuit system provided by the utility model;

[0040] Figure 2 A schematic diagram of the structure of the laser driving circuit provided by the utility model;

[0041] Figure 3 A schematic diagram of the structure of the distance measurement control circuit provided by the utility model;

[0042] Figure 4 A schematic diagram of the structure of the detection amplifier circuit provided by the utility model;

[0043] Figure 5 A schematic diagram of the structure of the distance measuring and counting circuit provided by the utility model;

[0044] Figure 6 A schematic diagram of the structure of the eyepiece heating circuit provided by the utility model;

[0045] Figure 7 A schematic diagram of the structure of the division lighting circuit provided by the utility model;

[0046] Figure 8 This is a structural schematic diagram of the power supply filtering protection circuit provided by the utility model. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0048] A specific embodiment of the utility model discloses a laser ranging direct aiming mirror circuit system, such as Figure 1 As shown, the laser ranging direct aiming mirror circuit system includes a laser driving circuit, a detection amplification circuit, a ranging control circuit and a ranging counting circuit;

[0049] The distance measurement control circuit is connected to the laser driving circuit, so that the laser driving circuit generates a detection laser that is emitted toward the target object;

[0050] The detection amplifier circuit is connected to the ranging counting circuit, and is used to receive the target echo electrical signal corresponding to the detection laser, and transmit the target echo electrical signal to the ranging counting circuit;

[0051] The ranging counting circuit is connected to the laser driving circuit and the ranging control circuit, and is used to receive the detection initial signal corresponding to the detection laser, and count according to the detection initial signal and the target echo electrical signal, and transmit the counting result to the ranging control circuit; the ranging control circuit determines the distance of the target object according to the counting result.

[0052] Specifically, Figure 1 As shown, the laser driving circuit is connected to the ranging control circuit and the ranging counting circuit. The ranging control circuit is used to control the laser driving circuit, control the ranging object, ranging time and ranging strategy of the laser driving circuit, and realize accurate ranging of the ranging object. At the same time, the laser driving circuit transmits the detection initial signal to the ranging counting circuit, and the ranging counting circuit starts ranging counting after receiving the detection initial signal.

[0053] Specifically, after starting laser ranging, the laser driving circuit emits a detection laser to the target object. After reaching the target object, the detection laser is reflected back to the detection amplifier circuit. The detection amplifier circuit is connected to the ranging counting circuit, and the received target echo electrical signal is transmitted to the ranging counting circuit; the ranging counting circuit is also connected to the ranging control circuit, which determines the initial time of laser emission according to the detection initial signal, and determines the end time of laser emission according to the target echo electrical signal, determines the counting result of the total time of the laser, and transmits the counting result to the ranging control circuit. The ranging control circuit can calculate the distance of the target object according to the counting result.

[0054] It can be understood that the total laser time multiplied by the laser speed is twice the distance of the target object, thereby calculating the distance of the target object.

[0055] Preferably, if Figure 2 As shown, the laser driving circuit includes a laser power supply Power1, an energy storage capacitor C1, a trigger coil T01 and a laser LASER1;

[0056] The high-voltage trigger port of the laser power supply Power1 is used to receive the detection command of the ranging control circuit, and the pulse output port outputs a pulse signal. The pulse signal is input to the primary winding of the trigger coil T01, and is transformed through the secondary winding to output a high-voltage pulse. The high-voltage pulse acts on the control port of the laser LASER1, so that the laser LASER1 emits a detection laser to the target object;

[0057] The high-voltage output port of the laser power supply Power1 is connected to one end of the energy storage capacitor C1 and the VCC power supply port of the laser LASER1; the high-voltage grounding port of the laser power supply Power1, the other end of the energy storage capacitor C1, the grounding port of the laser LASER1, and the grounding ports of the primary winding and the secondary winding of the trigger coil T01 are used for grounding.

[0058] Specifically, Figure 2 As shown, the positive power port 1 and the negative power port 2 of the laser power supply Power1 are respectively used to connect the positive +28V2 and negative 28V2GND of the external power supply, and the voltage energy storage port 3 can be used to receive the CHARGE electrical signal of the ranging control circuit, and perform DC-DC voltage conversion according to the duty cycle of CHARGE, convert the +28V2 voltage into high voltage HV, output the high voltage HV through the high voltage output port 7, charge the energy storage capacitor C1, and HVGND is the high voltage ground; the maximum voltage of the high voltage HV does not exceed 1kV, and the parameters of the energy storage capacitor C1 are 1KV 20μF.

[0059] Specifically, Figure 2 As shown, the high-voltage trigger port 4 of the laser power supply Power1 is used to receive the TRIGGER laser trigger signal of the ranging control circuit, output the pulse signal FIRE through the pulse output port 5, transform the voltage through the trigger coil T01, and output the high-voltage pulse through the C port to act on the control port 3 of the laser LASER1, so that the laser LASER1 emits laser to the target object.

[0060] Specifically, the laser power supply Power1 is LH-24S1000E.

[0061] Preferably, if Figure 3 As shown, the distance measurement control circuit includes a processor U3; the processor U3 is JCER32F103Q-100;

[0062] The PC4 port of the processor U3 is connected to the charge storage port of the laser driving circuit;

[0063] The PC5 port of the processor U3 is connected to the high voltage trigger port of the laser driving circuit;

[0064] The PE7 port of the processor U3 is connected to the counting result output port of the ranging counting circuit.

[0065] Specifically, the distance measurement control circuit sends an energy storage instruction CHARGE to the charge energy storage port of the laser driving circuit through the PC4 port. After receiving the energy storage instruction, the laser driving circuit starts to charge the energy storage capacitor C1.

[0066] Specifically, the ranging control circuit sends a laser ranging instruction TRIGGER to the high-voltage trigger port of the laser driving circuit through the PC5 port. After receiving the laser ranging instruction, the laser driving circuit starts to emit a detection laser.

[0067] Specifically, the distance measurement control circuit receives the counting result of the distance measurement counting circuit through the PE7 port and calculates the distance of the target object.

[0068] It is understandable that if Figure 3 As shown, the PA11 port and the PA12 port of the processor U3 can perform CAN communication with the upper system through the CAN bus; the OSC_IN port of the processor U3 is used to connect the 8M crystal oscillator to provide a counting clock.

[0069] Preferably, if Figure 4 As shown, the detection amplifier circuit includes a detection module U0, a first capacitor C58, a first operational amplifier U13, a second capacitor C64, a second operational amplifier U14, a first resistor R47, a second resistor R50, a third resistor R56, a comparator U18, a third capacitor C73, a monostable trigger U21A, a fourth capacitor C76 and a fourth resistor R58;

[0070] The detection signal output port of the detection module U0 is connected to one end of the first capacitor C58; the other end of the first capacitor C58 is connected to the IN+ port and IN- port of the first operational amplifier U13; the OUT- port of the first operational amplifier U13 is connected to one end of the second capacitor C64; the other end of the second capacitor C64 is connected to the IN+ port and IN- port of the second operational amplifier U14; the OUT- port of the second operational amplifier U14 is connected to the VIN+ port of the comparator U18; the VIN- port of the comparator U18 is connected to the VCC port according to The first resistor R47, the second resistor R50 and the third resistor R56 are connected at the same time; the VOUT+ port of the comparator U18 is connected to one end of the third capacitor C73, and the other end of the third capacitor C73 is connected to the A port of the monostable trigger U21A; the B port and the CLR port of the monostable trigger U21A are simultaneously connected to one end of the fourth resistor R58; the other end of the fourth resistor R58 is simultaneously connected to one end of the fourth capacitor C76 and the Rext / Cext port of the monostable trigger U21A; the other end of the fourth capacitor C76 is connected to the monostable trigger U21A

[0071] —The Cext port of the monostable trigger U21A, the Q port of which is connected to the end count IO port of the ranging counting circuit.

[0072] Specifically, Figure 4As shown, the detection module U0 is GD6513Y, the parameters of the first capacitor C58 are 10V 10pF, the first operational amplifier U13 is HJ1590, the second capacitor C64 is 50V22pF, the second operational amplifier U14 is 8FZ30B, the comparator U18 is ER161T, and the monostable trigger U21A is 54HC123.

[0073] Specifically, after receiving the target echo electrical signal DetectorSignal, the detection module U0 sequentially passes the target echo electrical signal DetectorSignal through the first capacitor C58, the first operational amplifier U13, the second capacitor C64, the second operational amplifier U14, the comparator U18, the third capacitor

[0074] —C73 and monostable trigger U21A, and finally output the LaserSignal signal to the ranging counting circuit through the Q port of the monostable trigger U21A.

[0075] Preferably, if Figure 5 As shown, the distance measurement and counting circuit includes CPLD U8; CPLD U8 is EPM7512AETI144-10;

[0076] The end count IO port of CPLD U8 is connected to the monostable trigger U21A port;

[0077] The start count IO port of CPLD U8 is connected to the control port of laser LASER1;

[0078] The counting result output port of the CPLD U8 is connected to the PE7 port of the processor U3.

[0079] Specifically, a CPLD (Complex Programmable Logic Device) can construct logic functions by itself as needed to achieve the counting of the detection initial signal and the target echo electrical signal.

[0080] Specifically, Figure 5 As shown, CPLD U8 is EPM7512AETI144-10, the start counting IO port 2 starts counting after receiving the initial detection signal, and the end counting IO port 1 ends counting after receiving the target echo electrical signal, and outputs the counting result to the ranging control circuit through the counting result output port 143, and the ranging control circuit calculates the distance of the target object.

[0081] Preferably, if Figure 6 As shown, the laser rangefinder direct-aiming mirror circuit system also includes an eyepiece heating circuit, and the eyepiece heating circuit includes a heating switch SW1 and a heating wire R0;

[0082] The positive and negative electrodes of the eyepiece heating circuit are respectively connected to the positive and negative electrodes of the first external power supply, and a heating switch SW1 and a heating wire R0 are sequentially connected in series between the positive and negative electrodes, and the heating wire R0 is arranged on the eyepiece.

[0083] Specifically, the positive pole of the eyepiece heating circuit is connected to the 28V2 power supply, and the negative pole is connected to the 28V1GND. The heating wire R0 is controlled by opening and closing the heating switch SW1. The heating wire is installed on the eyepiece to heat the eyepiece, thereby reducing problems such as blurring of the eyepiece caused by the external environment.

[0084] It is worth mentioning that the parameter of the heating wire R0 is 30Ω, and the heating switch SW1 is KN6A-2020DM.

[0085] Preferably, if Figure 7 As shown, the laser rangefinder direct aiming mirror circuit system also includes a graticule lighting circuit, and the graticule lighting circuit includes a graticule lighting switch SW2, a current limiting resistor R1 and a light emitting diode D0;

[0086] The positive electrode and the negative electrode of the division lighting circuit are respectively connected to the positive electrode and the negative electrode of the second external power supply, and the division lighting switch SW2, the current limiting resistor R1 and the light emitting diode D0 are connected in series between the positive electrode and the negative electrode.

[0087] Specifically, Figure 7 As shown, the positive pole of the division lighting circuit is connected to +5V, and the negative pole is connected to 5VGND. The lighting is controlled by the division lighting switch SW2, and the division scale is clearly identified to improve the ranging accuracy and reduce the environmental impact.

[0088] It can be understood that the divided lighting switch SW2 is KN6A-202DM, and the parameter of the current limiting resistor R1 is 0.5W 300Ω.

[0089] Preferably, if Figure 8 As shown, the laser ranging direct aiming mirror circuit system also includes a power supply filtering protection circuit, and the power supply filtering protection circuit includes a power switch SW0, a filter filter1, a fuse fuse1, a Schottky diode D1 and a TVP diode D2;

[0090] The positive electrode and negative electrode of the power supply filter protection circuit are respectively connected to the positive electrode and negative electrode of the third external power supply;

[0091] The positive electrode of the power supply filtering protection circuit is connected to one end of the power switch SW0, and the other end of the power switch SW0 is connected to the +VIN port of the filter filter1; the +Vout port of the filter filter1 is connected to one end of the fuse fuse1, and the other end of the fuse fuse1 is connected to the positive electrode of the Schottky diode D1; the negative electrode of the Schottky diode D1 is connected to the negative electrode of the TVP diode D2, and the positive electrode of the TVP diode D2 is connected to the -Vout port of the filter filter1.

[0092] Specifically, Figure 8 As shown, the positive pole of the power filter protection circuit is connected to the upper system +28V0, and the negative pole is connected to the upper system 28V0GND, and the power switch SW0 is used to control the power on and off.

[0093] Specifically, the rated working voltage of the power switch SW0 is not less than DC30V and the current is not less than 5A, which is KN6A-202DM; the working voltage of the filter filter1 is not less than DC30V and the current is not less than 5A, which is SFJLC-19193, and it has a filtering function; the fuse fuse1 has a fusing current of 5A, which is J-PB2012L000-6A; the working voltage of the Schottky diode D1 is not less than DC30V and the current is not less than 5A, which is DK50; the maximum reverse working voltage of the TVP diode D2 is 33V, and it has a surge protection function, which is SY6053AS.

[0094] The power switch SW0 is the main switch of the +28V0 power input provided by the superior system. When the power switch SW0 is closed, +28V1 is output. The filter filter1 forms an LC filter through inductor and capacitor passive components to filter the +28V1 power supply. When the current exceeds 5A and lasts for a certain period of time, the fuse fuse1 will blow to provide current protection. When the polarity of the power supply +28V0 is reversed, the Schottky diode D1 is in a high blocking state to provide reverse protection. When the +28V2 power supply voltage exceeds 33V, the TVP diode D2 will clamp the voltage to provide overvoltage and surge suppression protection. The power filter protection circuit can well protect the circuit system of the laser ranging, enhance the safety of the laser ranging, and improve the accuracy of the laser ranging.

[0095] Compared with the prior art, a laser ranging direct-aiming mirror circuit system provided by an embodiment of the utility model is directly connected to a laser driving circuit through a ranging control circuit, and a ranging counting circuit is connected to a detection amplifier circuit, thereby enhancing the environmental adaptability of the laser ranging circuit system and improving the circuit safety of the laser ranging; at the same time, the eyepiece of the laser is heated by an eyepiece heating circuit to improve the clarity of the eyepiece during ranging, and the graticule is illuminated by a graticule lighting circuit, so that the graticule angle scale markings can be clearly seen.

[0096] Those skilled in the art can understand that the program / software involved in the distance measurement control circuit in the above embodiment is a common method in the prior art, such as running the control method of laser distance measurement in the prior art in the distance measurement control circuit, and the present invention does not involve any improvement in software. The present invention only needs to connect each device with corresponding functions through the connection relationship given in the embodiment of the present invention, which does not involve any improvement in program software. As for the connection method between the hardware devices with corresponding functions, it can be implemented by those skilled in the art using the prior art, and will not be described in detail here.

[0097] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A laser rangefinder direct-aiming mirror circuit system, characterized in that: The laser ranging direct aiming mirror circuit system comprises a laser driving circuit, a detection amplification circuit, a ranging control circuit and a ranging counting circuit; The distance measurement control circuit is connected to the laser driving circuit, so that the laser driving circuit generates a detection laser that is emitted toward the target object; The detection amplifier circuit is connected to the ranging counting circuit, and is used to receive the target echo electrical signal corresponding to the detection laser, and transmit the target echo electrical signal to the ranging counting circuit; The ranging counting circuit is connected to the laser driving circuit and the ranging control circuit, and is used to receive the detection initial signal corresponding to the detection laser, and count according to the detection initial signal and the target echo electrical signal, and transmit the counting result to the ranging control circuit; The distance measurement control circuit determines the distance of the target object according to the counting result.

2. The laser rangefinder direct-aiming mirror circuit system according to claim 1, characterized in that: The laser driving circuit includes a laser power supply Power1, an energy storage capacitor C1, a trigger coil T01 and a laser LASER1; The high-voltage trigger port of the laser power supply Power1 is used to receive the detection command of the ranging control circuit, and the pulse output port outputs a pulse signal. The pulse signal is input to the primary winding of the trigger coil T01, and is transformed through the secondary winding to output a high-voltage pulse. The high-voltage pulse acts on the control port of the laser LASER1, so that the laser LASER1 emits a detection laser to the target object; The high-voltage output port of the laser power supply Power1 is connected to one end of the energy storage capacitor C1 and the VCC power supply port of the laser LASER1; the high-voltage grounding port of the laser power supply Power1, the other end of the energy storage capacitor C1, the grounding port of the laser LASER1, and the grounding ports of the primary winding and the secondary winding of the trigger coil T01 are used for grounding.

3. The laser rangefinder direct-aiming mirror circuit system according to claim 1, characterized in that: The distance measurement control circuit includes a processor U3; the processor U3 is JCER32F103Q-100; The PC4 port of the processor U3 is connected to the charge storage port of the laser driving circuit; The PC5 port of the processor U3 is connected to the high voltage trigger port of the laser driving circuit; The PE7 port of the processor U3 is connected to the counting result output port of the ranging counting circuit.

4. The laser rangefinder direct-aiming mirror circuit system according to claim 2, characterized in that: The detection amplifier circuit includes a detection module U0, a first capacitor C58, a first operational amplifier U13, a second capacitor C64, a second operational amplifier U14, a first resistor R47, a second resistor R50, a third resistor R56, a comparator U18, a third capacitor C73, a monostable trigger U21A, a fourth capacitor C76 and a fourth resistor R58; The detection signal output port of the detection module U0 is connected to one end of the first capacitor C58; the other end of the first capacitor C58 is connected to the IN+ port and the IN- port of the first operational amplifier U13; the OUT- port of the first operational amplifier U13 is connected to one end of the second capacitor C64; the other end of the second capacitor C64 is connected to the IN+ port and the IN- port of the second operational amplifier U14; the OUT- port of the second operational amplifier U14 is connected to the VIN+ port of the comparator U18; the first resistor R47, the second resistor R50 and the first resistor R61 are connected in sequence between the VIN- port and the VCC port of the comparator U18. Three resistors R56; the VOUT+ port of the comparator U18 is connected to one end of the third capacitor C73, and the other end of the third capacitor C73 is connected to the A port of the monostable trigger U21A; the B port and the CLR port of the monostable trigger U21A are simultaneously connected to one end of the fourth resistor R58; the other end of the fourth resistor R58 is simultaneously connected to one end of the fourth capacitor C76 and the Rext / Cext port of the monostable trigger U21A; the other end of the fourth capacitor C76 is connected to the Cext port of the monostable trigger U21A-, and the Q port of the monostable trigger U21A is connected to the end count IO port of the ranging counting circuit.

5. The laser rangefinder direct-aiming mirror circuit system according to claim 4, characterized in that: The distance measuring and counting circuit includes CPLD U8; CPLD U8 is EPM7512AETI144-10; The end count IO port of CPLD U8 is connected to the monostable trigger U21A port; The start count IO port of CPLD U8 is connected to the control port of laser LASER1; The counting result output port of the CPLD U8 is connected to the PE7 port of the processor U3.

6. The laser ranging direct aiming mirror circuit system according to any one of claims 1 to 5, characterized in that: The laser rangefinder direct-aiming mirror circuit system also includes an eyepiece heating circuit, and the eyepiece heating circuit includes a heating switch SW1 and a heating wire R0; The positive and negative electrodes of the eyepiece heating circuit are respectively connected to the positive and negative electrodes of the first external power supply, and a heating switch SW1 and a heating wire R0 are sequentially connected in series between the positive and negative electrodes, and the heating wire R0 is arranged on the eyepiece.

7. The laser rangefinder direct-aiming mirror circuit system according to claim 6, characterized in that: The laser rangefinder direct aiming mirror circuit system also includes a graticule lighting circuit, which includes a graticule lighting switch SW2, a current limiting resistor R1 and a light emitting diode D0; The positive electrode and the negative electrode of the division lighting circuit are respectively connected to the positive electrode and the negative electrode of the second external power supply, and the division lighting switch SW2, the current limiting resistor R1 and the light emitting diode D0 are connected in series between the positive electrode and the negative electrode.

8. The laser rangefinder direct-aiming mirror circuit system according to claim 1, characterized in that: The laser ranging direct aiming mirror circuit system also includes a power supply filtering protection circuit, which includes a power switch SW0, a filter filter1, a fuse fuse1, a Schottky diode D1 and a TVP diode D2; The positive electrode and negative electrode of the power supply filter protection circuit are respectively connected to the positive electrode and negative electrode of the third external power supply; The positive electrode of the power supply filtering protection circuit is connected to one end of the power switch SW0, and the other end of the power switch SW0 is connected to the +VIN port of the filter filter1; the +Vout port of the filter filter1 is connected to one end of the fuse fuse1, and the other end of the fuse fuse1 is connected to the positive electrode of the Schottky diode D1; the negative electrode of the Schottky diode D1 is connected to the negative electrode of the TVP diode D2, and the positive electrode of the TVP diode D2 is connected to the -Vout port of the filter filter1.

9. The laser rangefinder direct-aiming mirror circuit system according to claim 8, characterized in that: Fuse fuse1 is J-PB2012L000-5A, and filter filter1 is SFJLC-19193.

10. The laser rangefinder direct-aiming mirror circuit system according to claim 9, characterized in that: The Schottky diode D1 is DK50 and the TVP diode D2 is SY6053AS.

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