38results about How to "Avoid destabilizing effects" patented technology

The invention provides a charging pile system based on the internet of things and a control method of the charging pile system. The charging pile system comprises a charging station control center, a communication module, a charging pile and a battery pack information storage device. After an electric automobile is in communication connection with the charging station control center, a charging port suitable for the electric automobile is matched by the charging station control center, pairing of the electric automobile and the charging pile is completed, and the electric automobile is guided by generated pairing information to the charging position of the charging pile. According to the charging pile system based on the internet of things and the control method of the charging pile system, an applicable charging instruction is obtained through matching of the battery pack information storage device and electric automobile battery information, unstable influence on the power grid load caused by charging of the electric automobile is effectively avoided, and both the expectations of consumers for the driving distance, the performance and the reliability of the electric automobile and the expectations of an accumulator of the electric automobile for the time, the cost and the convenience which are related to charging are improved; and the pairing information guides the electric automobile to a charging area, the charging convenience and rapidness of the electric automobile are improved, and the applicability of the electric automobile in the process of generalization and popularization is guaranteed.

The invention belongs to the technical field of cold storage and refrigeration, and particularly relates to a time-temperature indicator and a preparation method thereof. The time-temperature indictor comprises an indicator fixing plate and a sealing thin film, wherein a fixing clamping slot is formed in the other end of the indicator fixing plate, the end part of one end of the fixing clamping slot is close to a thin film liquid storage bag, a diffusion medium belt matched with the fixing clamping slot in length is fixed in the fixing clamping slot, a thorn sheet is embedded in one end, close to the thin film liquid storage bag, of the diffusion medium belt, and scale marks are marked on the front side of the indicator fixing plate. The time-temperature indicator can reflect the change of the quality of a frozen food and indicate the remaining shelf life of the frozen food, and the critical temperature is freely regulated within the scope of 0-12 DEG C, so that the scope of application of the indicator is greatly expanded.

The invention relates to a directional exhaust type constant-pressure sounding balloon and an air inflation method of the directional exhaust type constant-pressure sounding balloon. The directional exhaust type constant-pressure sounding balloon comprises an air bag, a base, a pressure limiting mechanism and pressure relief components. The pressure limiting mechanism is installed on the air bag through the base; the pressure limiting mechanism comprises a pressure relief shell and a pressure relief piston, and the closed end of the pressure relief shell is communicated with the internal space of the air bag; the open end of the pressure relief shell is provided with an annular protrusion, and the pressure relief piston is connected with the annular protrusion through a tension spring; the wall face in the middle of a shaft of the pressure relief shell is provided with a plurality of through holes B, and a plurality of pressure exhaust holes are formed in a pressure exhaust cavity; a shifting lever is vertically arranged on the side face, backing on to the pressure relief shell, of the closed end of the pressure relief piston; a connection rack comprises a plurality of connection claws corresponding to the pressure relief components in number, the shifting lever is connected with the connecting claws in a rotating mode, and the connecting claws are fixed together through a fixing seat; an air exhaust nozzle is formed in the bottom of the pressure exhaust cavity and comprises an air exhaust piston rod, and the air exhaust piston rod is movably connected with the fixing seat through a universal shaft.

The invention relates to a method and system for controlling the opening degree of a steam turbine governing valve of a thermal power generating unit. A steam turbine is controlled according to throttle pressure, a throttle pressure set value, a primary frequency modulation instruction, a thermal power generating unit load value, a thermal power generating unit load set value, the feedforward component of an obtained steam turbine master control adjusting instruction, the integral operation component of the steam turbine master control adjusting instruction, the scaling operation component of the steam turbine master control adjusting instruction and the steam turbine pressure deviation operation component of the steam turbine master control adjusting instruction, the load deviation of the thermal power generating unit can be effectively reduced, and integral regulation is controlled; the stability of a CCS is achieved, proportional regulation can be effectively subjected to amplitude limiting, and system instability caused by too large deviation is avoided; and the load deviation of the thermal power generating unit is reduced, the throttle pressure can be stable, and disturbance of a boiler is reduced.

The invention discloses a household kitchen waste separated disposal device which comprises a shell. An upper mounting plate is arranged on the right side of the upper end of the shell. An arc filternet, a torsion spring and a guide plate are arranged on the left wall of the interior of the shell. A mounting sleeve, a movable connection rod and a movable sliding block are arranged on the right side of the upper end of the guide plate. A partition plate is arranged at the bottom of the shell. A support, a water guide pipe and a sprayer are arranged at the upper end of the upper mounting plate.A liquid material guide hopper, an oil-water separator, a drainage pipe and an oil storage tank are arranged between the inner wall of the shell and the left side of the partition plate. A waste guide hopper and a smashing cavity are arranged between the inner wall of the shell and the right wall of the partition plate. The smashing cavity is provided with a stirring shaft, a motor, a distribution plate, a rotary smashing blade, a fixed smashing blade, a spiral guide vane, a guide bottom plate, a discharging pipeline and a supporting bottom rod. A supporting sleeve and a damping leaf spring are arranged on the lower side of the supporting bottom rod. An air exchange fan, an air gathering cover and a sundry filtering cavity are arranged on the right wall of the shell. The household kitchenwaste separated disposal device can separate out kitchen solid sundries, oil and waste water, and is simple and efficient.

The invention relates to a contactor, in particular to an energy-storing type energy-saving alternating-current contactor comprising an electromagnetic system. The electromagnetic system comprises an iron core and a coil. An output end of a power supply detecting module is connected with an input end of a microprocessor. An output end of the microprocessor is respectively connected with a power supply controller and an energy-storing capacity controller. An output end of the power supply controller is connected with a magnet exciting coil. The energy-storing capacity controller is connected with energy-storing capacity. An output end of the energy-storing capacity controller is connected with the magnet exciting coil. When power is on, the power supply controller controls charging and closing of the magnet exciting coil, the energy-storing capacity controller controls the energy-storing capacity to charge, supplying of the power is stopped after the magnet exciting coil is closed, and closing state is maintained through residual magnetism. When the power is off, the energy-storing capacity carries out demagnetizing treatment to the magnet exciting coil so that purpose of release is achieved. Energy-saving effects are obvious due to the fact that the whole process only consumes little energy.

A system for improving the performance of a powered boat that includes both methods and apparatuses that provide a powered boat means to stabilize, control, and optimize the powered boat's performance when the powered boat is in powered motion. The system provides capabilities of enhancing the powered boat's performance by responding to both aerodynamic and hydrodynamic effects upon the powered boat when the powered boat is in motion. Some embodiments of the system are capable of altering its means of response to aerodynamic effects while the powered boat is in powered motion, other embodiments are capable of altering the powered boat's response to hydrodynamic effects while the powered boat is in powered motion, and still other embodiments are capable of altering the powered boat's response to both aerodynamic and hydrodynamic effects while the powered boat is in powered motion. Certain embodiments of the system are capable of utilizing aerodynamic elements that operate on the air stream flowing within a tunnel formed within a multihull of a powered boat, while other embodiments are capable of mitigating the effects of water impacts upon the roof of a tunnel formed within a multihull powered boat. Still other embodiments are capable of responding to aerodynamic effects by interacting with portions of the air stream that passes above the boat while mitigating the potential for negative effects due to cross-winds impacting the structure which rises above a deck of the powered boat.

The invention relates to a feeding and discharging device for simultaneous eddy current flaw detection applied to inner and outer walls of a stainless steel short pipe. The feeding and discharging device comprises a feeding assembly, a conveying assembly, a detection matching assembly and a discharging assembly which are sequentially arranged in the advancing direction of the stainless steel shortpipe, wherein the detection matching assembly comprises two V-groove supports and a moving platform, wherein the two V-groove supports can vertically lift up and down, and the moving platform is arranged between the two V-groove supports and is capable of lifting up and down; and the tops of the V-groove supports are machined with a V-shaped groove capable of stably placing a stainless steel short pipe, and the top of the moving platform is machined with a guide inclined plane for receiving the conveying assembly and the discharging assembly. Compared with the prior art, the method can ensurethe matching consistency with the eddy current detection process, the unstable influence during detection is avoided, and finally the reliability of the detection result is ensured; and in the wholedetection process, successive feeding of the steel pipes can be achieved, the feeding interval time of the steel pipes can be regulated, time and labor are saved, and flexible and reliable effects areachieved.

The invention discloses an automatic gain control method for a receiver. The automatic gain control method comprises the steps: a signal output by an attenuation unit in each link of the receiver is acquired respectively; the acquired signal in each link is subjected to demodulation processing and analog to digital conversion processing, and the processed signal in each link is sent to an FPGA control unit; the FPGA control unit obtains an attenuation control signal corresponding to each link according to the processed signal in each link and a preset gain control table, and the attenuation control signals corresponding to all the links are correspondingly sent to the attenuation units in the all links in a parallel manner respectively; and the attenuation unit in each link performs gain control processing on a signal input into the attenuation unit according to the corresponding attenuation control signal respectively. According to the method, the attenuation units in the all links are controlled in a parallel manner, so as to avoid chaos of control of all the links; and in addition, an automatic gain control range of signals in the receiver is greatly widened. The invention further discloses an automatic gain control system for the receiver.

The invention relates to a mining method, and specifically discloses a room-and-pillar mining method. Compared with the prior art, the major difference is that according to traditional room-and-pillar mining methods, minerals recovery is started after upward incising; according to the method, after cut-through through upward incising, advancing angle mining is conducted on the two sides from top to bottom of upward incising, mineral drive branches are formed, the corresponding mineral drive branches of adjacent chambers are interconnected, a vent channel is formed, and mined minerals are conveyed away; and the mineral drive branches are driven from top to bottom, the adjacent mineral drive branches are interconnected, ore pillars are reserved between the mineral drive branches, and chamber sill pillars are reserved in the positions close to hopper openings. The method has the advantages that (1) high safety guarantees are provided for ore deposit mining with poor stability; and (2) mining cross workload is reduced, and the mining recovery rate is increased.

Disclosed is a speed sensor detecting table. The speed sensor detecting table comprises a base in a rectangular structure; the side surfaces of the base are provided with support legs, the above of the base is provided with covers including a first cover and a second cover, wherein the first cover is arranged on the top surface of the second cover; the front side surface of the base is provided with a rotating speed display screen, a power switch on the right of the rotating speed display screen, and a rotating speed adjusting knob on the right of the power switch; the inside of the base is provided with a small transformer and a motor controller; the middle of the top surface of the second cover is provided with a bearing, the middle of the bottom surface of the second cover is provided with a small motor, and a rotating shaft at the top of the small motor is in inserting connection with the bearing; a position close the middle of the top surface of the second cover is provided witha testing hole, inside which a cover piece is arranged, the lower end of the testing hole is provided with a speed sensor, and the top surface of the second cover is provided with a turntable. The speed sensor detecting table is accurate and comprehensive in data detection and simple in operation.

The invention belongs to the technical field of point cloud processing, and particularly discloses a high-precision point cloud normal calculation method, which comprises the following steps that point cloud data is read; a three-dimensional point cloud containing N points is set as P, the ith point in the three-dimensional point cloud P is marked as Pi (xi, yi, zi), three scales k1, k2 and k3 of the Pi are determined as neighbor points in a spatial neighborhood, the point cloud is traversed, and an initial normal vector corresponding to each scale of all the points in the three-dimensional point cloud P is determined; neighborhood point normal information is used for replacing the invalid normal, a minimum spanning tree algorithm is adopted to enable the normal directions of all neighborhood points to be consistent, and the final normal directions of all points in the P are determined. According to the method, a mechanism that multi-scale information is adopted to calculate and fuse the normal direction is proposed for the first time, the unstable influence caused by parameter K selection is effectively avoided, the influence of noise is inhibited, details are better kept at the boundary part, and the normal calculation problem of noisy point cloud data is effectively solved.

The invention relates to a self-balancing sounding balloon and an air inflation method thereof. The self-balancing sounding balloon comprises a gasbag, a base, a pressure limiting mechanism, a pressure relief module and a guiding module, and the pressure limiting mechanism is arranged on the gasbag through the base; the pressure limiting mechanism comprises pressure relief shells and pressure relief pistons, and the closed ends of the pressure relief shells are communicated with the inner space of the gasbag; the opening ends of the pressure relief shells are provided with ring-shaped protrusions, and the pressure relief pistons are connected with the ring-shaped protrusions through extension springs; a plurality of through-holes B are formed on the axial middle wall of the pressure relief shells, and a plurality of pressure discharging holes are formed on a pressure discharging cavity; the pressure relief pistons are rotatably connected with connecting jaws, an air discharging nozzle is arranged at the bottom of the pressure discharging cavity, the air discharging nozzle comprises an air discharging piston rod, and the air discharging piston rod is flexibly connected with a fixing seat through a cardan shaft; the guiding module comprises cone-shaped guiding heads and stabilizing rings, the connecting jaws are rotatably connected with the stabilizing rings, the guiding heads are fixed on the stabilizing rings, and a plurality of guiding air plates with the quantity corresponding to the quantity of the connecting jaws are arranged on one side the guiding head, which backs onto the gasbag.

The invention discloses an intermittent high-temperature smoke treatment device. The high-temperature smoke treatment device comprises a heat exchanger which communicates with a furnace body through a gas transmission pipeline. An air pressure adjusting device is arranged on the gas transmission pipeline. The maximum volume of the air pressure adjusting device is 3 to 5 times the volume of the heat exchanger. The intermittent high-temperature smoke treatment device has the beneficial effects that by arranging the air pressure adjusting device between a flue of the furnace body and the heat exchanger, continuous and stable air feeding of the heat exchanger can be ensured, the unstable influences of high-temperature furnace gas are effectively avoided, and the service life of system equipment is prolonged advantageously.

The invention provides a data synchronization time service system and method for a laser radar and an inertial sensor. The system comprises a satellite time service module, an FPGA processing unit, an IMU, the laser radar and a control unit. The satellite time service module generates a high-precision PPS pulse and UTC time, the FPGA processing unit calibrates the PPS pulse and generates an IMU trigger instruction, synchronous time service of the IMU and the laser radar is controlled through the calibrated PPS pulse and IMU trigger instruction, and corresponding timestamps are collected; and the industrial personal computer analyzes the calibrated laser radar data packet and the calibrated IMU data packet to complete time system alignment of the IMU data and the laser radar data. According to the system and the method, the problems that in the current multi-sensor fusion process, synchronous time service between the IMU and the laser radar and the GNSS is difficult, and the time synchronization precision of multi-sensor data is low are effectively solved.

The invention discloses an intelligent street lamp control system with a weather perceptive function. The intelligent street lamp control system consists of an Internet information management center, street lamp control coordinators and street lamp control terminals. The intelligent street lamp control system is characterized in that the Internet information management center performs both-way communication with a plurality of street lamp control coordinators; the street lamp control coordinators acquire weather information from the Internet information management center and feed information of the street lamp control terminal back to the information center, and meanwhile each street lamp control coordinator is in intercommunication with a plurality of street lamp control terminals via Zigbee and sends a control commands after processing and judging the weather information; the street lamp control terminals receive the control command and regulate the luminance of street lamps correspondingly. According to the intelligent street lamp control system with the weather perceptive function, the weather information is acquired directly from the Internet, and the luminance of certain street lamps in a certain area can be controlled to be regulated correspondingly according to the weather variation, so that resources are saved and meanwhile the street lamps are controlled flexibly, and the communication reliability is improved.

An instrument for measuring hydrogen in molten steel is composed of main body, measuring gun and probe. The main body consists of gas channel system and data processing and control system. The gas channel system comprises measuring and correcting sub-systems. Its measuring method includes such steps as starting main body, flushing ags channel, blowdown process, determining baseline for measurement, and cyclic and closed-loop measurements. Its advantage is correct result.

The invention provides an efficient operation PCS long-term cooling water tank. The PCS long-term cooling water tank is mainly composed of an outer-layer concrete shell, an inner-layer steel water tank and an efficient heat exchange parallel flow channel between the outer-layer concrete shell and the inner-layer steel water tank. The flow channel is formed by separation of an S-shaped vertical folded plate installed on the outer surface of the steel water tank, the bottom of the concrete shell serves as an inlet, and the top of the concrete shell serves as an outlet. And the outlet header pipe extends outwards to form a chimney structure. A plurality of large-pipe-diameter corrugated pipes penetrating through the upper surface and the lower surface of the water tank are arranged in the steel water tank. The efficient operation PCS long-term cooling water tank is applied to the PCS starting and long-term operation process under the condition of reactor water loss accidents, and passive air natural circulation with considerable flow speed is formed in the parallel flow channels by utilizing the high temperature of the outer surface of the steel water tank and the chimney effect; and efficient heat transfer of the outer surface of the water tank is achieved by means of reinforced heat transfer such as corrugated pipe. The process promotes long-term operation of the PCS system by reducing the water temperature of the PCS cooling water tank or reducing evaporation of water in the water tank.

The invention discloses an automobile and a control method and system thereof. The automobile comprises an air conditioner controller, a gearbox controller and an engine controller. The method comprises the following steps that when the automobile stays in a driving state, whether or not the gearbox controller generates a gear shift signal is judged; if the gearbox controller generates the gear shift signal, information of maintaining an air conditioner state is transmitted to the engine controller; the engine controller generates information for forbidding an air conditioner from being turnedon / off according to the information of maintaining the air conditioner state, and the information for forbidding the air conditioner from being turned on / off is transmitted to the air conditioner controller, so that the air conditioner controller forbids the air conditioner of the automobile from being turned on / off during gear shifting of the automobile conveniently. The control method of the automobile can avoid the situation that unstable influences are caused to an engine when the air conditioner of the automobile and gear shifting of the automobile are changed at the same time; prolonging of the service life of the engine is facilitated, and the automobile and the control method and system thereof are simple and easy to implement.

The present invention relates to one kind of clathrate of chloramine phosphate and cyclodextrin or its derivative, its preparation process, pesticide composition including the clathrate of chloramine phosphate and cyclodextrin or its derivative, and the use of the clathrate of chloramine phosphate and cyclodextrin or its derivative as pesticide. The clathrate is heat stable, and the present invention solves the problem of unstability of chloramine phosphate as pesticide.

The invention relates to an automatic locking structure of an adjusting screw rod for a flow-adjustable metering pump. The metering pump comprises a driving end, a side cover, an adjusting screw rod and an adjusting handle, wherein the adjusting screw rod is located in the side cover and performs transmission with the side cover through threads, and the adjusting handle is connected with the adjusting screw rod; when the adjusting handle is rotated, the adjusting handle drives the adjusting screw rod to move, the eccentric distance is finally adjusted, and flow of the metering pump is adjusted; the automatic locking structure comprises a spring, a spring gland and a locking spring seat, the inner end of the locking spring seat is a locking end, the outer end of the locking spring seat is a free end, a guide rod used for sleeving the spring is arranged in the middle of the locking spring seat, a through slot is formed in the side cover, the locking spring seat penetrates through the through slot in the side cover, the locking end of the locking spring seat is clamped in the adjusting screw rod, the guide rod of the locking spring seat is sleeved with the spring, and the spring is located in the through slot, the spring gland is connected to an opening of the through slot and compresses the spring, and the free end extends out of the outer side of the spring gland. Compared with the prior art, the automatic locking structure is simple in arrangement, good in locking effect and convenient to adjust.

The invention relates to a radio frequency energy acquisition system based on energy management and a passive radio frequency tag. The system comprises an antenna, a radio frequency front end, an impedance adaptive adjustment module, a load isolation and charge-discharge control module, a linear voltage stabilization module, a switch K, a detection capacitor C11 and an energy storage capacitor C12. The antenna is cooperatively coupled with the radio frequency front end; the output end of the radio frequency front end is connected with one end of the detection capacitor C11; and the output end of the radio frequency front end is further connected with one end of an energy storage capacitor C12 and a load isolation and charge-discharge control module through a switch K, the other end of the detection capacitor C11 and the other end of the energy storage capacitor C12 are both grounded, and the switch K is controlled by an impedance self-adaptive adjustment module. Standard 50 omega matching is removed, conjugate matching is adopted to obtain the optimal matching effect, and it is ensured that the state is still in the optimal matching state after state switching through load isolation; and stable power supply voltage is output in a pre-charging and voltage stabilizing mode, and efficient utilization of energy is achieved.

The invention relates to a self-balancing sounding balloon and an air inflation method thereof. The self-balancing sounding balloon comprises a gasbag, a base, a pressure limiting mechanism, a pressure relief module and a guiding module, and the pressure limiting mechanism is arranged on the gasbag through the base; the pressure limiting mechanism comprises pressure relief shells and pressure relief pistons, and the closed ends of the pressure relief shells are communicated with the inner space of the gasbag; the opening ends of the pressure relief shells are provided with ring-shaped protrusions, and the pressure relief pistons are connected with the ring-shaped protrusions through extension springs; a plurality of through-holes B are formed on the axial middle wall of the pressure relief shells, and a plurality of pressure discharging holes are formed on a pressure discharging cavity; the pressure relief pistons are rotatably connected with connecting jaws, an air discharging nozzle is arranged at the bottom of the pressure discharging cavity, the air discharging nozzle comprises an air discharging piston rod, and the air discharging piston rod is flexibly connected with a fixing seat through a cardan shaft; the guiding module comprises cone-shaped guiding heads and stabilizing rings, the connecting jaws are rotatably connected with the stabilizing rings, the guiding heads are fixed on the stabilizing rings, and a plurality of guiding air plates with the quantity corresponding to the quantity of the connecting jaws are arranged on one side the guiding head, which backs onto the gasbag.

The invention discloses an on-line eddy current testing device of multiple strands of tire cord steel wires, which comprises a roller support, rollers, a fixed support and a plurality of eddy currenttesting units, the rollers comprise a first roller and a second roller, and the first roller and the second roller are arranged on the two sides of the roller support respectively; the fixed support is arranged between the first roller and the second roller; each eddy current detection unit is arranged on the fixed support in parallel, and each eddy current detection unit detects one strand of tire cord steel wire. The eddy current testing units are installed side by side, the idler wheels serve as a conveying mechanism of the tire cord steel wires, online eddy current testing of the multiplestrands of tire cord steel wires is achieved, and the quality safety of the tire cord steel wires is guaranteed.

The invention relates to an automatic locking structure of an adjusting screw rod for a flow-adjustable metering pump. The metering pump comprises a driving end, a side cover, an adjusting screw rod and an adjusting handle, wherein the adjusting screw rod is located in the side cover and performs transmission with the side cover through threads, and the adjusting handle is connected with the adjusting screw rod; when the adjusting handle is rotated, the adjusting handle drives the adjusting screw rod to move, the eccentric distance is finally adjusted, and flow of the metering pump is adjusted; the automatic locking structure comprises a spring, a spring gland and a locking spring seat, the inner end of the locking spring seat is a locking end, the outer end of the locking spring seat is a free end, a guide rod used for sleeving the spring is arranged in the middle of the locking spring seat, a through slot is formed in the side cover, the locking spring seat penetrates through the through slot in the side cover, the locking end of the locking spring seat is clamped in the adjusting screw rod, the guide rod of the locking spring seat is sleeved with the spring, and the spring is located in the through slot, the spring gland is connected to an opening of the through slot and compresses the spring, and the free end extends out of the outer side of the spring gland. Compared with the prior art, the automatic locking structure is simple in arrangement, good in locking effect and convenient to adjust.

The invention relates to a method and system for controlling the opening degree of a steam turbine governing valve of a thermal power generating unit. A steam turbine is controlled according to throttle pressure, a throttle pressure set value, a primary frequency modulation instruction, a thermal power generating unit load value, a thermal power generating unit load set value, the feedforward component of an obtained steam turbine master control adjusting instruction, the integral operation component of the steam turbine master control adjusting instruction, the scaling operation component of the steam turbine master control adjusting instruction and the steam turbine pressure deviation operation component of the steam turbine master control adjusting instruction, the load deviation of the thermal power generating unit can be effectively reduced, and integral regulation is controlled; the stability of a CCS is achieved, proportional regulation can be effectively subjected to amplitude limiting, and system instability caused by too large deviation is avoided; and the load deviation of the thermal power generating unit is reduced, the throttle pressure can be stable, and disturbance of a boiler is reduced.

The invention discloses an automatic gain control method for a receiver, which comprises collecting signals output by attenuation units in links of various levels of the receiver respectively; performing detection processing and analog-to-digital conversion processing on the signals collected in links of various levels respectively , and send the processed signals in the links at all levels to the FPGA control unit respectively; the FPGA control unit obtains the attenuation control signals corresponding to the links at all levels respectively according to the processed signals in the links at all levels and the preset gain control table, And the attenuation control signals corresponding to the links of each level are respectively sent in parallel to the attenuation units in the links of each level; the attenuation units in the links of each level respectively perform gain control processing on the signals input to the attenuation unit according to the attenuation control signals. The method can parallelly control the attenuation units in the links at all levels, and the control confusion of the links at all levels will not occur; and the automatic gain control range of the signal in the receiver is greatly improved. The invention also discloses a receiver automatic gain control system.