Remote control system of electrically driven logging truck

Abstract

The invention discloses an electrically-driven logging truck remote control system which comprises a vehicle-mounted control end and a remote control end, and the remote control end is provided with an instruction generation module, an anti-interference module and a signal enhancement module. In order to solve the problems that an existing remote control system of the electrically-driven logging truck is prone to signal interference in a complex electromagnetic environment, poor in stability and the like, an isolation-filtering-frequency selection three-level anti-interference system is constructed. The anti-interference module uses a photoelectric coupler for isolation and noise reduction, a harmonic suppression network for shunting and harmonic suppression, and a dynamic feedback unit for screening target frequency signals. Meanwhile, the operational amplifier amplitude modulation unit is combined with the dynamic feedback unit, and signal attenuation in long-distance transmission is compensated in real time. According to the system, the anti-interference capability is remarkably improved, stable and accurate signal transmission is ensured, dynamic adjustment can be performed according to signal attenuation, reliable guarantee is provided for remote control of the electrically-driven logging truck in a complex environment, and the logging operation efficiency and safety are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of remote control, and in particular to a remote control system for an electric-driven logging vehicle. Background Art

[0002] Electric logging vehicles, as critical equipment in the exploration of mineral resources like oil and natural gas, often operate in extremely harsh environments, often outdoors or underground, often in complex electromagnetic environments. In these environments, logging vehicles rely on precise commands from a remote control terminal to perform a series of critical tasks, such as logging and sampling. However, existing remote control systems for electric logging vehicles exhibit significant circuit design flaws when operating in these complex and ever-changing environments.

[0003] First, in a complex electromagnetic environment, electromagnetic waves generated by various interference sources intersect with each other. Although existing technologies have adopted methods such as electromagnetic filtering to address interference, other factors can still affect the transmission process. In particular, during amplification, due to insufficient amplitude control, the signal amplitude may be over- or under-amplified, leading to command amplification misalignment. For example, an operator issues a command to lower a logging device at a constant speed. Due to abnormal signal amplitude, the command received by the logging vehicle is incorrectly amplified, causing the equipment to be lowered out of control. This not only damages the logging equipment but can also cause serious safety accidents.

[0004] Secondly, existing remote control circuits have significant flaws in controlling signal stability. Electric logging vehicles operate over a wide range, and signal transmission distances vary. During long-distance transmission, signal strength gradually attenuates due to losses in the transmission medium. Existing technologies struggle to adjust the amplitude in a timely manner based on signal attenuation, resulting in weak and unstable signals received by the onboard control terminal. This unstable signal, when amplified, further exacerbates the risk of command amplification misalignment. In operating areas with complex terrain, signal attenuation is exacerbated by obstructions and reflections, leading to more severe signal attenuation. This can cause the logging vehicle to respond slowly to control commands, or even malfunction, significantly reducing operational efficiency and safety.

[0005] Furthermore, during signal amplification, the dual lack of amplitude control and stability control in existing technologies introduces additional noise and distortion. This noise and distortion, when superimposed on the original signal, further compromises its integrity and accuracy. These issues accumulate during multiple signal amplification and transmission processes, resulting in significant discrepancies between the control commands ultimately delivered to the logging vehicle and those issued by the operator. This severely impacts the reliability and accuracy of remote control of the electric logging vehicle and hinders the smooth execution of logging operations. Summary of the Invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a remote control system for an electric-driven logging vehicle.

[0007] The technical solution is: a remote control system for an electric-driven logging vehicle, including: A vehicle-mounted control terminal, installed on the electric-driven logging vehicle, for receiving remote control instructions and controlling various operations of the logging vehicle; The remote control terminal is located in a safe area away from the logging vehicle operation site, and the operator can issue control commands on the remote control terminal; The remote control terminal is provided with a command generation module, an anti-interference module and a signal enhancement module, wherein: An instruction generation module is used to generate corresponding remote control instructions according to the operator's operation input; Anti-interference module, used to isolate and reduce noise of generated remote control commands; The signal enhancement module is connected to the anti-interference module and specifically includes: A power amplifier unit, used for performing power amplification processing on the isolated and noise-reduced signal; A harmonic suppression network, which is provided between the anti-interference module and the power amplifier unit, and is used to suppress the harmonic amount during the power amplification process; The dynamic gain control circuit is connected to the output end of the power amplifier unit and is used to dynamically adjust the gain of the signal after power amplification to reduce the intensity fluctuation of the signal during transmission.

[0008] Furthermore, the power amplifier unit includes: The power amplifier uses an NPN transistor and a PNP transistor to form a push-pull structure, which is used to amplify the power of the received signal; The RC stabilizer is connected to the input end of the power amplifier and is used to suppress high-frequency oscillation.

[0009] Furthermore, the power amplifier also includes a first diode and a second diode, the anode of the first diode is connected to the base of the NPN transistor; the cathode of the second diode is connected to the base of the PNP transistor and is grounded through a first resistor; the cathode of the first diode and the anode of the second diode are connected to the output end of the RC stabilizer and the anti-interference module through a first capacitor; the collector of the NPN transistor is connected to the harmonic suppression network, the collector of the PNP transistor is grounded, and the emitters of the NPN transistor and the PNP transistor are connected to the dynamic gain control circuit through a second capacitor.

[0010] Furthermore, the harmonic suppression network includes a first field-effect transistor, a first inductor, a second resistor and a third capacitor, the gate of the first field-effect transistor is connected to the anti-interference module, the source of the first field-effect transistor is grounded, the drain of the first field-effect transistor is connected to the first end of the second resistor and the third capacitor through the first inductor, and the second ends of the second resistor and the third capacitor are connected to the collector of the NPN transistor.

[0011] Furthermore, the dynamic gain control circuit includes an operational amplifier amplitude modulation unit and a dynamic feedback unit, wherein: The operational amplifier amplitude modulation unit includes a first operational amplifier and an amplitude stabilization component. The first operational amplifier receives the signal output by the power amplifier. The amplitude stabilization component is arranged between the inverting input terminal and the output terminal of the first operational amplifier and is used to stabilize the amplitude of the signal after power amplification. The dynamic feedback unit includes a second op amp, a pass filter component and a feedback protection component. The second op amp and the pass filter component constitute a frequency-selective amplifier, which is used to perform frequency selection on the output signal of the first op amp and feed the selected signal back to the non-inverting input terminal of the first op amp. The feedback protection component is arranged at the output terminal of the frequency-selective amplifier to improve the amplitude-frequency characteristics of the frequency-selective amplifier.

[0012] Furthermore, the amplitude stabilization component includes a first transistor, a third resistor, a fourth resistor, a fourth capacitor and a first adjustable resistor. The emitter and base of the first transistor are connected to the inverting input terminal of the first op amp, the collector of the first transistor is connected to the third resistor and the first end of the first adjustable resistor, the second end of the third resistor is connected to the first end of the fourth capacitor, and the fourth capacitor and the second end of the first adjustable resistor are connected to the output terminal of the first op amp; the output terminal of the first op amp is also connected to the first end of the fifth capacitor through a fifth resistor, and the second end of the fifth capacitor is connected to the signal transmitter.

[0013] Furthermore, the pass filter component includes a sixth resistor, a seventh resistor, a sixth capacitor and a seventh capacitor, the first end of the sixth resistor and the seventh capacitor are connected to the output of the first op amp, the second end of the sixth resistor is connected to the non-inverting input of the second op amp and is grounded through the sixth capacitor; the second end of the seventh capacitor is connected to the inverting input of the first op amp and the first end of the eighth resistor through the seventh resistor, and the second end of the eighth resistor is connected to the output and inverting input of the second op amp.

[0014] Furthermore, the feedback protection component includes a first voltage regulator tube and an eighth capacitor, the cathode of the first voltage regulator tube and the first end of the eighth capacitor are connected to the output end of the second op amp, and the anode of the first voltage regulator tube and the second end of the eighth capacitor are grounded.

[0015] Furthermore, the RC stabilizer includes a ninth resistor and a ninth capacitor, wherein a first end of the ninth resistor and the ninth capacitor is connected to the first capacitor, and a second end of the ninth resistor and the ninth capacitor is grounded.

[0016] Furthermore, the anti-interference module includes a photocoupler, the cathode of the transmitting end of the photocoupler is connected to the instruction generation module through a tenth capacitor, the emitter of the receiving end of the photocoupler is connected to the gate of the first field effect transistor and the first end of the eleventh resistor through a tenth resistor, and the second end of the eleventh resistor is connected to the input end of the power amplifier.

[0017] Through the above technical solution, the beneficial effects of the present invention are as follows: the present invention significantly improves the anti-interference ability of the electric-driven logging vehicle remote control system in a complex electromagnetic environment by constructing a three-level anti-interference system of "isolation-filtering-frequency selection"; at the same time, combined with the operational amplifier amplitude modulation unit and the dynamic feedback unit, the system can compensate for signal attenuation in long-distance transmission in real time, ensuring the stability and accuracy of signal transmission, so that when the electric-driven logging vehicle has a wide operating range and different signal transmission distances, it can still be dynamically adjusted according to the signal attenuation situation, providing reliable technical guarantee for remote control in complex environments, and effectively improving the efficiency and safety of logging operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a block diagram of the module structure of a remote control system for an electric-driven logging vehicle provided by one embodiment of the present invention.

[0019] Figure 2 This is a circuit schematic diagram of a remote control terminal provided in one embodiment of the present invention.

[0020] Figure 3 This is a structural block diagram of a signal enhancement module provided by an embodiment of the present invention.

[0021] Figure 4 This is a structural block diagram of a dynamic gain control circuit provided by one embodiment of the present invention. DETAILED DESCRIPTION

[0022] The above and other technical contents, features and effects of the present invention are described below with reference to the attached Figure 1 To the attached Figure 4 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the accompanying drawings.

[0023] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

[0024] The electric drive logging vehicle remote control system of the present invention is used in practical applications, such as Figure 1 As shown, an operator inputs operating commands for controlling the logging vehicle into the command generation module 110 of the remote control terminal 10, such as those for controlling the lowering speed and lifting height of the logging equipment. After the command generation module 110 generates the corresponding remote control command, it is processed sequentially by the anti-interference module 120 and the signal enhancement module 130, ultimately transmitting a stable and accurate signal to the vehicle-mounted control terminal 20. Based on the received command, the vehicle-mounted control terminal 20 controls the logging vehicle's motor, winch, and other equipment, achieving precise control of the logging operation.

[0025] In a specific embodiment, the anti-interference module 120 performs isolation and noise reduction processing on the generated remote control instructions. Figure 2 As shown, the module includes a photocoupler U1, whose cathode at the transmitting end is connected to the command generation module via a tenth capacitor C1, and whose emitter at the receiving end is connected to the signal enhancement module 130 via a tenth resistor R3. During operation, the photocoupler U1 transmits commands via optical signals, electrically isolating the command generation module from subsequent circuits. In complex electromagnetic environments, external interference is unlikely to directly affect the command signal through the photocoupler, effectively blocking electromagnetic interference, ensuring the accuracy of the command during the initial transmission phase, and avoiding command errors or distortion caused by interference signals.

[0026] The instructions after anti-interference processing enter the signal enhancement module 130, such as Figure 3 As shown, the signal enhancement module 130 is composed of a power amplifier unit 131, a harmonic suppression network 132, and a dynamic gain control circuit 133. In a specific embodiment, the power amplifier unit 131 uses an NPN transistor VT1 and a PNP transistor VT2 to form a push-pull power amplifier to amplify the received signal.

[0027] At the same time, reference Figure 2 The power amplifier is further provided with a first diode D1 and a second diode D2. The anode of the first diode D1 is connected to the base of VT1, and the cathode of the second diode D2 is connected to the base of VT2 and grounded via a first resistor R6. The cathode of D1 and the anode of D2 are connected to the output of the RC stabilizer and anti-interference module 120 via a first capacitor C3. The collector of VT1 is connected to the harmonic suppression network 132, the collector of VT2 is grounded, and the emitters of both are connected to the dynamic gain control circuit 133 via a second capacitor C5.

[0028] To suppress high-frequency oscillation, an RC stabilizer is connected to the input of the power amplifier. The RC stabilizer includes a ninth resistor R5 and a ninth capacitor C2. The first ends of the ninth resistor R5 and the ninth capacitor C2 are connected to the first capacitor C3, and the second ends of the ninth resistor R5 and the ninth capacitor C2 are grounded.

[0029] The push-pull structure described above enables the power amplifier to efficiently amplify the received signal, enhancing signal strength to meet long-distance transmission requirements. Specifically, during the positive half-cycle of the input signal, VT1 conducts and amplifies; during the negative half-cycle, VT2 conducts and amplifies, improving amplification efficiency and signal quality. The RC stabilizer suppresses high-frequency oscillations, ensuring stable operation of the power amplifier and preventing signal distortion or instability caused by high-frequency interference.

[0030] In order to improve the processing efficiency and anti-interference effect of remote control instructions, a harmonic suppression network 132 is provided between the anti-interference module 120 and the power amplifier unit 131. Figure 2 As shown, the harmonic suppression network 132 includes a first field effect transistor N1, a first inductor L1, a second resistor R7 and a third capacitor C4, the gate of N1 is connected to the anti-interference module 120, the source of N1 is grounded, the drain of N1 is connected to R7 and the first end of the third capacitor C4 through L1, and the second ends of R7 and C4 are connected to the collector of VT1.

[0031] During the transmission of remote control commands for an electrically driven logging vehicle, harmonics are superimposed on the useful signal, causing signal distortion. In harmonic suppression network 132, N1 shunts the harmonic current based on the characteristics of the input signal. When a harmonic voltage is detected, N1 exhibits a low resistance characteristic, allowing the harmonic current to flow through it to the ground terminal, thereby reducing the harmonic current component flowing to subsequent circuits. At the same time, the RLC parallel resonant circuit formed by L1, R7, and C4 presents high impedance to harmonics, enabling it to effectively suppress harmonics of specific frequencies in the environment. This not only effectively prevents distortion of the amplified signal, but also provides excellent protection for the power amplifier.

[0032] In order to improve the stability of the remote control command transmission process, the remote control command signal amplified by the power amplifier enters the dynamic gain control circuit 133 for further processing. Figure 4 As shown, the dynamic gain control circuit 133 includes an operational amplifier amplitude modulation unit 1331 and a dynamic feedback unit 1332, wherein: The op amp amplitude modulation unit 1331 includes a first op amp U2 and an amplitude stabilization component. The first op amp U2 receives the signal output by the power amplifier. The amplitude stabilization component is arranged between the inverting input terminal and the output terminal of the first op amp U2 and is used to stabilize the amplitude of the signal after power amplification.

[0033] Dynamic feedback unit 1332 includes a second op amp U3, a gating filter component, and a feedback protection component. The second op amp U3 and the gating filter component form a frequency-selective amplifier, which is used to frequency-select the output signal of the first op amp U2 and feed the selected signal back to the non-inverting input of the first op amp U2. The feedback protection component is located at the output of the frequency-selective amplifier to improve its amplitude-frequency characteristics.

[0034] Specifically, such as Figure 2 The amplitude stabilization component shown includes a first transistor VT3, a third resistor R8, a fourth resistor R9, a fourth capacitor C6 and a first adjustable resistor RP1. The emitter and base of the first transistor VT3 are connected to the inverting input terminal of the first operational amplifier U2, the collector of the first transistor VT3 is connected to the third resistor R8 and the first end of the first adjustable resistor RP1, the second end of the third resistor R8 is connected to the first end of the fourth capacitor C6, and the fourth capacitor C6 and the second end of the first adjustable resistor RP1 are connected to the output terminal of the first operational amplifier RP1.

[0035] During operation of op amp amplitude modulation unit 1331, when the input signal amplitude changes, the first transistor VT3 responds accordingly. If the input signal amplitude increases, the base-emitter voltage of VT3 increases accordingly, causing its collector current to increase. At this point, the voltage drop across R8 increases, and the voltage fed back to the inverting input of U2 through RP1 also increases. Based on the op amp's virtual short and open characteristics, U2 adjusts its output to reduce the output signal amplitude, and vice versa. This negative feedback mechanism achieves stable control of the signal amplitude.

[0036] After the signal output by the first op amp U2 enters the frequency-selective amplifier, the pass filter component forms a frequency-selective network at a specific frequency for filtering the remote command signal. Specifically, the pass filter component includes a sixth resistor R11, a seventh resistor R12, a sixth capacitor C8, and a seventh capacitor C9. The first ends of the sixth resistor R11 and the seventh capacitor C9 are connected to the output of the first op amp U2, the second end of the sixth resistor R11 is connected to the non-inverting input of the second op amp U3, and grounded via the sixth capacitor C8; the second end of the seventh capacitor C9 is connected to the inverting input of the first op amp U2 and the first end of the eighth resistor R13 via the seventh resistor R12, and the second end of the eighth resistor R13 is connected to the output and inverting input of the second op amp U3. By reasonably setting the parameters of the above-mentioned resistor and capacitor components, the pass filter component, based on its own filtering characteristics, only allows the remote control command signal of the logging vehicle to pass smoothly and be amplified, while suppressing signals of other frequencies, ensuring that useful control command signals are extracted from complex signals, improving the purity and accuracy of the signal.

[0037] The second op amp, U3, amplifies the frequency-selected signal and generates a feedback signal. This feedback signal is sent back to the non-inverting input of the first op amp, U2, for comparison and adjustment with the original signal. This feedback mechanism enables the first op amp, U2, to dynamically adjust the amplitude and phase of its output signal based on the magnitude and phase of the feedback signal, thereby achieving precise control of the remote control command signal.

[0038] The feedback protection component, consisting of a first voltage-stabilizing diode DZ1 and an eighth capacitor C10, is connected to the output of the second op amp U3. When the frequency-selected signal is fed back to the non-inverting input of the first op amp U2, the feedback protection component processes the signal. If the feedback signal amplitude increases abnormally, the first voltage-stabilizing diode DZ1 quickly turns on, limiting the excessive voltage to a safe range and preventing damage to the circuit. The eighth capacitor C10 filters and smoothes the feedback signal, effectively improving the amplitude-frequency characteristics of the frequency-selective amplifier and further enhancing the amplitude stabilization of remote control commands.

[0039] The signal, after amplitude stabilization, is output from the output of the first op amp U2. This output is also connected to the first terminal of a fifth capacitor C7 via a fifth resistor R10. This capacitor C7 further filters and stabilizes the signal before transmitting the processed signal to the signal transmitter. Inside the transmitter, the signal is first modulated by a modem, encoding the control command information onto a carrier signal. This signal is then transmitted via an antenna until it is captured by the receiving antenna of the vehicle-mounted control terminal 20, ensuring that the logging vehicle can accurately execute remote control commands.

[0040] In summary, the electric logging vehicle remote control system of the present invention utilizes an anti-interference module to cut off the conduction path of electromagnetic interference, a harmonic suppression network to filter out specific frequency clutter, and a dynamic feedback unit to select the target frequency signal, forming a three-stage anti-interference system of "isolation-filtering-frequency selection," significantly enhancing the system's anti-interference capabilities. The operational amplifier amplitude modulation unit, combined with the dynamic feedback unit, provides real-time compensation for signal attenuation during long-distance transmission, ensuring signal stability and accuracy during transmission. This significantly enhances the system's ability to control signal stability. Even within the wide operating range of the electric logging vehicle and varying signal transmission distances, dynamic adjustments can be made based on signal attenuation, providing reliable technical support for remote control of electric logging vehicles in complex environments.

[0041] The electric logging vehicle remote control system of this invention has broad application potential. Beyond oil and gas exploration, other mineral resource exploration applications, such as coal and metal ore exploration, also face complex operating environments and remote control requirements. The technical advantages of this system can effectively meet these requirements, improving exploration efficiency and safety.

[0042] In the description of this application, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0043] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0044] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0045] Units described as separate components may or may not be physically separate, and components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0046] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0047] The above is a further detailed description of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the technical fields to which the present invention belongs and related technical fields, based on the technical solution ideas of the present invention, the expansion and replacement of operating methods and data should all fall within the scope of protection of the present invention.

Claims

1. A remote control system for an electric-driven logging vehicle, characterized in that: include: A vehicle-mounted control terminal, installed on the electric-driven logging vehicle, for receiving remote control instructions and controlling various operations of the logging vehicle; The remote control terminal is located in a safe area away from the logging vehicle operation site, and the operator can issue control commands on the remote control terminal; The remote control terminal is provided with a command generation module, an anti-interference module and a signal enhancement module, wherein: An instruction generation module is used to generate corresponding remote control instructions according to the operator's operation input; Anti-interference module, used to isolate and reduce noise of generated remote control commands; The signal enhancement module is connected to the anti-interference module and specifically includes: A power amplifier unit, used for performing power amplification processing on the isolated and noise-reduced signal; A harmonic suppression network, which is provided between the anti-interference module and the power amplifier unit, and is used to suppress the harmonic amount during the power amplification process; The dynamic gain control circuit is connected to the output end of the power amplifier unit and is used to dynamically adjust the gain of the signal after power amplification to reduce the intensity fluctuation of the signal during transmission.

2. The remote control system for an electric-driven logging vehicle according to claim 1, characterized in that: The power amplifier unit comprises: The power amplifier uses an NPN transistor and a PNP transistor to form a push-pull structure, which is used to amplify the power of the received signal; The RC stabilizer is connected to the input end of the power amplifier and is used to suppress high-frequency oscillation.

3. The remote control system for an electric-driven logging vehicle according to claim 2, characterized in that: The power amplifier also includes a first diode and a second diode, the anode of the first diode is connected to the base of the NPN transistor; the cathode of the second diode is connected to the base of the PNP transistor and is grounded through a first resistor; the cathode of the first diode and the anode of the second diode are connected to the output end of the RC stabilizer and the anti-interference module through a first capacitor; the collector of the NPN transistor is connected to the harmonic suppression network, the collector of the PNP transistor is grounded, and the emitters of the NPN transistor and the PNP transistor are connected to the dynamic gain control circuit through a second capacitor.

4. The remote control system for an electrically driven logging vehicle according to claim 3, characterized in that: The harmonic suppression network includes a first field-effect transistor, a first inductor, a second resistor and a third capacitor. The gate of the first field-effect transistor is connected to the anti-interference module, the source of the first field-effect transistor is grounded, the drain of the first field-effect transistor is connected to the first end of the second resistor and the third capacitor through the first inductor, and the second ends of the second resistor and the third capacitor are connected to the collector of the NPN transistor.

5. The remote control system for an electric-driven logging vehicle according to claim 4, characterized in that: The dynamic gain control circuit includes an operational amplifier amplitude modulation unit and a dynamic feedback unit, wherein: The operational amplifier amplitude modulation unit includes a first operational amplifier and an amplitude stabilization component. The first operational amplifier receives the signal output by the power amplifier. The amplitude stabilization component is arranged between the inverting input terminal and the output terminal of the first operational amplifier and is used to stabilize the amplitude of the signal after power amplification. The dynamic feedback unit includes a second op amp, a pass filter component and a feedback protection component. The second op amp and the pass filter component constitute a frequency-selective amplifier, which is used to perform frequency selection on the output signal of the first op amp and feed the selected signal back to the non-inverting input terminal of the first op amp. The feedback protection component is arranged at the output terminal of the frequency-selective amplifier to improve the amplitude-frequency characteristics of the frequency-selective amplifier.

6. The remote control system for an electric-driven logging vehicle according to claim 5, characterized in that: The amplitude stabilization component includes a first transistor, a third resistor, a fourth resistor, a fourth capacitor and a first adjustable resistor. The emitter and base of the first transistor are connected to the inverting input terminal of the first op amp, the collector of the first transistor is connected to the third resistor and the first end of the first adjustable resistor, the second end of the third resistor is connected to the first end of the fourth capacitor, and the fourth capacitor and the second end of the first adjustable resistor are connected to the output terminal of the first op amp; the output terminal of the first op amp is also connected to the first end of the fifth capacitor through a fifth resistor, and the second end of the fifth capacitor is connected to the signal transmitter.

7. The remote control system for an electric-driven logging vehicle according to claim 6, characterized in that: The pass filter component includes a sixth resistor, a seventh resistor, a sixth capacitor and a seventh capacitor. The first ends of the sixth resistor and the seventh capacitor are connected to the output of the first op amp, the second end of the sixth resistor is connected to the non-inverting input of the second op amp and is grounded through the sixth capacitor; the second end of the seventh capacitor is connected to the inverting input of the first op amp and the first end of the eighth resistor through the seventh resistor, and the second end of the eighth resistor is connected to the output and inverting input of the second op amp.

8. The remote control system for an electric-driven logging vehicle according to claim 7, characterized in that: The feedback protection component includes a first voltage regulator tube and an eighth capacitor, the cathode of the first voltage regulator tube and the first end of the eighth capacitor are connected to the output end of the second op amp, and the anode of the first voltage regulator tube and the second end of the eighth capacitor are grounded.

9. The remote control system for an electrically driven logging vehicle according to claim 3, characterized in that: The RC stabilizer includes a ninth resistor and a ninth capacitor. A first end of the ninth resistor and the ninth capacitor is connected to the first capacitor, and a second end of the ninth resistor and the ninth capacitor is grounded.

10. The remote control system for an electric-driven logging vehicle according to any one of claims 1 to 9, characterized in that: The anti-interference module includes a photoelectric coupler, the cathode of the transmitting end of the photoelectric coupler is connected to the instruction generation module through a tenth capacitor, the emitter of the receiving end of the photoelectric coupler is connected to the gate of the first field effect transistor and the first end of the eleventh resistor through a tenth resistor, and the second end of the eleventh resistor is connected to the input end of the power amplifier.

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