CN113520808A

CN113520808A - Hemiplegia rehabilitation training device

Info

Publication number: CN113520808A
Application number: CN202110794793.9A
Authority: CN
Inventors: 迟杰骏
Original assignee: Peoples Hospital of Xinjiang Uygur Autonomous Region
Current assignee: Peoples Hospital of Xinjiang Uygur Autonomous Region
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-10-22
Anticipated expiration: 2041-07-14
Also published as: CN113520808B

Abstract

A hemiplegic rehabilitation training device comprises a vehicle body, an electric telescopic rod, a storage battery, a charging socket, a belt waist buckle, a power switch, a detection mechanism, a control circuit, a signal sending circuit and a data receiving and displaying unit; the rear upper end of the vehicle body is provided with a breast board, the breast board is provided with video and audio equipment, the upper end of the belt waist buckle is arranged at the lower end of the middle part of the vehicle body, and the front end of the middle part of the vehicle body is hinged with a railing; the upper ends of the multiple sets of electric telescopic rods are respectively arranged at the lower ends of the multiple supporting legs of the vehicle body, and the multiple wheels of the vehicle body are respectively arranged at the lower ends of the multiple sets of electric telescopic rods; the detection mechanism is arranged at the lower end side of the barrel body of the electric telescopic rod; the storage battery, the power switch, the charging socket, the control circuit and the signal sending circuit are arranged in the element box and are electrically connected with the electric telescopic rod. The hands of the hemiplegic patient can conveniently hold the vehicle body, the waist and the feet can be exercised, and the time and the situation of the patient exercising the body to move up and down can be mastered by far-end family or medical care personnel in real time.

Description

Hemiplegia rehabilitation training device

Technical Field

The invention relates to the technical field of rehabilitation exercise equipment, in particular to a hemiplegia rehabilitation training device.

Background

In clinical medical treatment, some hemiplegic patients can gradually recover the walking ability after being treated in hospitals, and in actual conditions, the walking ability of the hemiplegic patients after being recovered cannot be the same as that of normal people, so that the hemiplegic patients can be recovered to be close to the normal state only by using exercise rehabilitation equipment for a long time. The general structure of the existing equipment for exercising and rehabilitation comprises a vehicle body and a supporting mechanism, wherein the supporting mechanism is arranged in the middle of the vehicle body, the waist of a patient is sleeved on the supporting mechanism, and then the patient holds the vehicle body to walk forwards so as to achieve the purpose of walking and exercising.

The existing exercise rehabilitation equipment is limited by the structure, the height of the vehicle body is fixed (even if the vehicle body has an adjusting function, the vehicle body is manually adjusted and inconvenient to use), and thus, when the vehicle body is too high or too low, the exercise of the hemiplegic patient is greatly inconvenient (the hemiplegic patient needs to bend over to effectively support the vehicle body to walk, and the hemiplegic patient needs to stand on the tiptoe to support the vehicle body to walk). Also, the existing exercise rehabilitation apparatus cannot provide a function of exercising the body for the hemiplegic patient by moving up and down. Based on the above, the exercise rehabilitation equipment applied at present has great limitation, and the device which can conveniently realize the height adjustment of the vehicle body and can provide the body up-and-down motion training for the hemiplegic patients is especially necessary.

Disclosure of Invention

In order to overcome the defects that the height of a vehicle body cannot be conveniently adjusted and the body up-and-down movement exercise cannot be provided for a hemiplegic patient due to the limitation of the structure of the existing exercise rehabilitation equipment, the hemiplegic patient rehabilitation training device can conveniently control the rising or falling height of the vehicle body through simple power switch control according to the height of the hemiplegic patient with certain walking ability in application under the combined action of a related mechanism and a circuit, the hand of the hemiplegic patient can conveniently hold the vehicle body, a user can exercise the up-and-down movement of the body (the purpose of exercising the waist and the feet is achieved), convenience is provided for the hemiplegic patient, and a far-end family or medical staff can also master the condition that the patient exercises the body up-and-down movement in real time, so that powerful technical support is achieved for supervising the effective rehabilitation exercise of the patient.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a hemiplegic rehabilitation training device comprises a vehicle body, an electric telescopic rod, a storage battery, a charging socket, a belt waist buckle and a power switch, and is characterized by also comprising a detection mechanism, a control circuit, a signal transmission circuit and a data receiving and displaying unit; the rear upper end of the vehicle body is provided with a breast board, video and audio equipment is arranged in front of the breast board, a belt waist buckle is arranged at the lower end of the middle part of the vehicle body, and the front end of the middle part of the vehicle body is hinged with a railing; the electric telescopic rods are provided with a plurality of same sets, the upper ends of the electric telescopic rods are respectively arranged at the lower ends of a plurality of supporting legs of the vehicle body, and a plurality of wheels of the vehicle body are respectively rotatably arranged at the lower ends of the electric telescopic rods; the detection mechanism is arranged on the lower end side of the cylinder body of one set of the electric telescopic rods; the storage battery, the power switch, the charging socket, the control circuit and the signal sending circuit are arranged in the element box; the power supply output ends of the power supply switch and the control circuit are respectively and electrically connected with the power supply input ends of the plurality of sets of electric telescopic rods; the signal output end of the detection mechanism is electrically connected with the signal input end of the signal sending circuit; the data receiving and displaying unit is application software installed in the intelligent Internet equipment.

Further, the electric telescopic rod is a reciprocating electric push rod.

Further, detection mechanism includes the casing, the driving rubber tyer, driven rubber tyer, adjustable resistance's the tight cover in adjustment handle outside has terminal rubber tyer, driving rubber tyer and driven rubber tyer rotate respectively and install at casing left side lower extreme, casing left side middle part, driving rubber tyer left side is located outside the casing left side lower extreme, adjustable resistance installs upper end middle part in the casing, driving rubber tyer and driven rubber tyer contact, driven rubber tyer and terminal rubber tyer contact, the casing is installed one set of electric telescopic handle's barrel lower extreme lateral part in, and the left side of driving rubber tyer and electric telescopic handle's piston rod right-hand member contact.

Further, the outer diameter of the driving rubber wheel is smaller than that of the driven rubber wheel, and the outer diameter of the driven rubber wheel is smaller than that of the tail end rubber wheel.

Furthermore, the control circuit comprises two sets of time control switches and a power switch A, one end of the power switch A is electrically connected with the positive power input ends of the two sets of time control switches respectively, the negative power input ends of the two sets of time control switches A are electrically connected, and the time control switches are full-automatic microcomputer time control switches.

Further, signal transmission circuit includes single chip module, GPRS module, electric connection between single chip module, the GPRS module, and single chip module's power input both ends and GPRS module's power input both ends are connected respectively, and single chip module's signal output part and GPRS module's signal input part pass through the data line and connect.

Furthermore, the data receiving and displaying unit can receive the resistance value change data of the adjustable resistor transmitted by the GPRS module through the wireless mobile network and can display the resistance value change data on the display interface of the intelligent internet equipment in a oscillogram or digital mode, and the timing subunit of the data receiving and displaying unit can count and display the dynamic change time of the resistance value of the adjustable resistor.

The invention has the beneficial effects that: before the medical hand rail is used, the hand rail is opened, then a patient with certain standing and walking ability stands in the middle of the inside of the vehicle body, the belt waist buckle is fixed on the waist of the patient, and then the hand rail can be used after the right end of the hand rail is fixed through the screw rod. In the invention, a user can respectively control the four sets of electric telescopic rods to drive the lifting height or the descending height by adjusting the first power switch, so that the lifting height or the descending height of the vehicle body can be conveniently controlled, and the hands of a hemiplegic patient can conveniently hold the vehicle body. In the invention, a user can enable the four sets of electric telescopic rods to circularly drive the vehicle body to change the height up and down through the control circuit, so that the feet of a patient can leave and contact the ground, the purpose of exercising the body up and down (exercising the waist and the feet) is achieved, and convenience is brought to the hemiplegic patient. Through the functions of the signal sending circuit, the detection mechanism, the data receiving and displaying unit and the like, the remote family or medical personnel can master the up-and-down movement time and condition of the body of the patient through the application software in a mobile phone or a PC machine and the like in real time, thereby playing a powerful technical support for supervising the effective rehabilitation exercise of the patient. Based on the above, the invention has good application prospect.

Drawings

The invention is further illustrated below with reference to the figures and examples.

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a schematic view of the structure of the detecting mechanism of the present invention.

Fig. 3 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, 2 and 3, a hemiplegia rehabilitation training device comprises a vehicle body 2 with four wheels 1, an electric telescopic rod M, a storage battery G1, a charging socket CZ, a belt buckle 3, a power switch K, a detection mechanism, a control circuit 5, a signal transmission circuit 6 and a data receiving and displaying unit; the middle part of the vehicle body 2 is of a hollow structure, the rear upper end of the vehicle body 2 is provided with a baffle plate 201, the upper part of the front end of the baffle plate 201 is provided with a video audio device 8 (which can be used by a user to exercise a gap and can achieve better rehabilitation exercise effect), four connecting bands 31 are sewn around the upper end of a belt waist buckle 3, the upper parts of the four connecting bands 31 are respectively fixedly arranged at the lower end around the middle part of the vehicle body 2 through screw nuts, the belt waist buckle 3 is positioned at the lower end in the middle part of the vehicle body 2, the front end in the middle part of the vehicle body 2 is of an open structure, the left side of the front end in the middle part of the vehicle body 2 is hinged with a rail 21, the right end of the rail 21 is provided with an opening, the right side of the front end in the middle part of the vehicle body 2 is welded with a ']' type clamping groove 22, the front and rear middle parts of the clamping groove 22 are provided with fixing holes, the right end of the rail 21 is positioned in the clamping groove 22, and a fixing screw 23 passes through the fixing holes of the clamping groove 22, the right end of the rail 21 is provided with a hole, so that the right end of the rail 21 and the clamping groove 22 are installed together; the four electric telescopic rods M are provided with four same sets, the upper ends of the cylinders of the four electric telescopic rods M are respectively and vertically arranged at the lower ends of four supporting legs 24 of the vehicle body through screw nuts, and the fixed seats of four wheels 1 of the vehicle body are respectively arranged at the lower ends of the piston rods of the four electric telescopic rods M through screw nuts; the detection mechanism is arranged at the left front end of the vehicle body and at the right lower end of a cylinder body of a set of electric telescopic rod M; the storage battery G, the power switch K, the charging socket CZ, the control circuit 5 and the signal sending circuit 6 are mounted on a circuit board in the element box 7, and the element box 7 is mounted in the middle of the front lower end of the breast board 21.

As shown in fig. 1, 2 and 3, the electric telescopic rod M is a reciprocating electric push rod finished product of model LYX, the working voltage direct current is 24V, the power is 50W, and the stroke of a piston rod of the electric telescopic rod is 30 cm; the model of the storage battery G is 24V/5 Ah; the charging socket CZ is a coaxial power socket, the jack of the coaxial power socket is positioned outside the front upper opening of the element box, the power switch K is a toggle power switch, and the operating handle of the power switch is positioned outside the front upper middle opening of the element box 7. The detection mechanism comprises a rectangular shell 41, a driving rubber wheel 42, a driven rubber wheel 43 and an adjustable resistor RP, a tail end rubber wheel 45 is tightly sleeved outside an adjusting handle of the adjustable resistor RP, a shaft rod is respectively arranged in the middle parts of the driving rubber wheel 42 and the driven rubber wheel 43, the front side and the rear side of the shaft rod of the driving rubber wheel 42 and the driven rubber wheel 43 are respectively and rotatably arranged in shaft holes at the front part and the rear part of the left lower end of the shell 41 and shaft holes at the front part and the rear part of the left middle part of the shell 41, the driving rubber wheel 42 and the driven rubber wheel 43 are respectively positioned in the left lower end and the left middle part of the shell 41, the left side of the driving rubber wheel 42 is positioned outside the left lower end of the shell 41, adjustable resistance RP installs in casing upper end middle part, and initiative rubber tyer 42 and driven rubber tyer 43 contact, and driven rubber tyer 43 and terminal rubber tyer 45 contact, casing 41 upper left end through screw nut install perpendicularly at one set of electric telescopic handle M's of left front end the cylinder right side lower extreme, and the left side of initiative rubber tyer 45 and the contact of electric telescopic handle M's piston rod right-hand member. The outer diameter of the driving rubber wheel 42 is smaller than that of the driven rubber wheel 43, the outer diameter of the driven rubber wheel 43 is smaller than that of the tail end rubber wheel 45, when a piston rod of the electric telescopic rod M moves up and down to a dead point, the driving rubber wheel 42 drives the driven rubber wheel 43 to rotate, and the driven rubber wheel 43 drives the tail end gear 45 and a handle of the adjustable resistor RP to just rotate to a left dead point and a right dead point. The control circuit comprises two sets of time control switches A3 and A4 and a power switch SK, one end of the power switch SK is connected with a pin 1 of a positive power input end of two sets of time control switches A3 and A4 through a lead, a pin 2 of a negative power input end of two sets of time control switches A3 and A4 is connected through a lead, the time control switches A3 and A4 are full-automatic microcomputer time control switch products of model KG316T, the microcomputer time control switch is provided with a display screen and seven keys of canceling/recovering, time correcting, week correcting, automatic/manual, timing and clock, the microcomputer time control switch is provided with two power input ends 1 and 2 pins and two

power output ends

3 and 4 pins, a user respectively presses and operates seven keys to set interval time of power output ends and time of each power output, the set power output time can not cause change of set power loss as long as the next key operation is not performed after one time setting, and an operating handle of the power switch SK is positioned outside an opening in the middle of the right end of the element box. The signal sending circuit comprises a single chip microcomputer module A1 and a GPRS module A2, the single chip microcomputer module and the GPRS module are connected through circuit board wiring, two ends 1 and 2 of power input of the single chip microcomputer module A1 are connected with two ends 1 and 2 of power input of the GPRS module A2 through leads respectively, and a signal output end of the single chip microcomputer module A1 is connected with a signal input end of the GPRS module A2 through an RS485 data line. The data receiving and displaying unit can receive the resistance value change data of the adjustable resistor transmitted by the GPRS module through the wireless mobile network and can display the resistance value change data on a display interface of the intelligent Internet equipment in a oscillogram or digital mode, and the timing subunit of the data receiving and displaying unit can count and display the dynamic change time of the resistance value of the adjustable resistor.

As shown in fig. 1, 2 and 3, two poles of the storage battery G and two ends of the charging socket CZ (after the storage battery G is out of power, the charging socket of an external 24V power supply charger can be inserted into the charging socket to charge the storage battery G), pins 1 and 2 of the time control switch A3 at the power input end of the control circuit and pins 1 and 2 of the GPRS module a2 at the power input end of the signal sending circuit are connected through leads, respectively, and pins 1 and 2 of the power switch K are connected through leads. The power output ends of the two paths of power supplies of the power switch K are respectively connected with the

pins

3 and 4, and the

pins

5 and 6, the

pins

3 and 4 of the time control switch A3 and the

pins

3 and 4 of the time control switch A4 of the control circuit, and the power input ends of the positive and negative poles and the positive pole of the four sets of electric telescopic rods M are respectively connected through leads. The positive pole of the storage battery G is connected with one end of a positive adjustable resistor RP of the detection mechanism through a lead, and the other end of the signal output end adjustable resistor RP of the detection mechanism is connected with a pin 3 of a signal input end single chip microcomputer module A1 of the signal sending circuit through a lead. The data receiving and displaying unit is application software installed in intelligent Internet equipment (a smart phone or a PC, a tablet computer and the like)

As shown in figures 1, 2 and 3, before use, the rail 21 is opened, then a patient with certain standing and walking ability stands in the middle of the vehicle body 2, the belt waist buckle 3 (with the same structure as a common belt) is fixed at the waist of the patient, and then the right end of the rail 21 is sleeved in the clamping groove 22 and fixed through the screw 23, so that the training use can be started. In the invention, when a user feels that the height of the vehicle body 2 is too high and needs to be adjusted to be low, the user can shift the handle of the power switch K leftwards by using the hand, so that the pins 1 and 2 and the

pins

3 and 4 of the power switch K are respectively communicated, thus the two poles of a 24V power supply can enter the positive and negative pole power supply input ends of the four sets of electric telescopic rods M, the four sets of electric telescopic rods M are electrified to work, the piston rods of the four sets of electric telescopic rods M respectively drive the wheels 1 to move upwards, further the whole height of the vehicle body is lowered, and the power switch K is closed after the vehicle body reaches a proper height. When the user thinks that automobile body 2 highly hangs down and need adjust the height, stir right with handle switch K's handle, then switch K's 1 and 2 feet and 5 and 6 feet communicate respectively, like this, 24V power two poles of the earth can get into four sets of electric telescopic handle M's negative and positive two poles of the earth power input end, four sets of electric telescopic handle M get electric work its piston rod and promote wheel 1 downstream respectively, and then the automobile body whole height uprise, close switch K after suitable height. After the adjustment is completed, the patient can walk forwards with both feet touching the ground, thereby playing the role of exercise.

As shown in fig. 1, 2 and 3, after the control circuit is powered on and works, the power supply (with adjustable time) is output for 8 seconds at first by the

pins

3 and 4 of the time control switch a3 after being powered on and works, and then the power supply is output for 8 seconds every 8 seconds and enters the power supply input ends of the positive pole and the negative pole of the electric telescopic rod M; after the time control switch A4 works by electrifying, 3 and 4 pins of the time control switch A4 can circularly output 8 seconds of power supply (time is adjustable) at an interval of 8 seconds to enter the input ends of the negative and positive pole power supplies of the electric telescopic rod M, and then output 8 seconds of power supply at an interval of 8 seconds to enter the input ends of the negative and positive pole power supplies of the electric telescopic rod MM; in the time that the positive and negative poles or the negative and positive poles of the electric telescopic rod MM are electrified and work, the piston rod of the electric telescopic rod can circularly push the four wheels to descend and lift, so that the whole body of the trolley can synchronously and circularly ascend and descend, and corresponding patients can also circularly exercise the body to move up and down.

Fig. 1, 2, 3 show, detection mechanism during operation, when left end electric telescopic handle M got electric work its piston rod up-and-down motion before the automobile body, initiative rubber tyer 42 can clockwise or anticlockwise rotation (the piston rod drives initiative rubber tyer and rotates) thereupon, initiative rubber tyer 42 drives driven rubber tyer 43 and rotates (reduces the rotational speed), driven rubber tyer 43 drives terminal rubber tyer 45 and rotates (reduces the rotational speed), terminal rubber tyer 45 drives adjustable resistance RP's adjustment handle clockwise or anticlockwise rotation, resistance grow when adjustable resistance RP's handle clockwise rotation, otherwise just diminishes. In practical situations, when the resistance value of the adjustable resistor RP changes and the 3-pin signal voltage output to the single chip module a1 changes, the single chip module a1 converts the dynamically changing analog voltage signal into a digital signal under the action of its internal circuit, and outputs the digital signal to the signal input terminal of the GPRS module a 2. The GPRSA2 transmits the input dynamically changing digital signal through the wireless mobile network. The manager connected with the GPRS module a2, in combination with the data receiving and displaying unit in the smart internet device (preferably, a smart phone in this embodiment), can display the received resistance value change data of the adjustable resistor RP on the display interface of the mobile phone, etc. in a waveform diagram or digital manner, and the timing subunit of the data receiving and displaying unit can count and display the dynamic change time of the resistance value of the adjustable resistor RP (the resistance value changes continuously to represent the up-and-down movement of the user doing exercise), and the remote family or medical staff can also grasp the time and situation of the patient doing exercise up-and-down movement through the mobile phone or PC, etc. in real time, thereby playing a powerful technical support for effective rehabilitation exercise of the patient (for example, when the doctor grasps that the patient does not do up-and-down movement in one day, the patient or family can be called in time, so that the patient can do exercise in time, improving the effect of rehabilitation exercises). Through all above-mentioned circuits and relevant mechanism combined action, in taking exercise, the hemiplegia patient hand can conveniently hold the automobile body, can also temper the up-and-down motion of health (play the purpose of taking exercise waist and foot), has brought the facility for the hemiplegia patient to effective rehabilitation exercise has played powerful technical support for supervising patient. In the circuit, the model of an adjustable resistor RP is 470K; the upper end and the lower end in the cylinder of the electric telescopic rod M are provided with limit switches, after the piston rod moves to the upper dead point or the lower dead point, the electric telescopic rod stops moving, and only the reverse input power supply can be electrified to work again.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hemiplegic rehabilitation training device comprises a vehicle body, an electric telescopic rod, a storage battery, a charging socket, a belt waist buckle and a power switch, and is characterized by also comprising a detection mechanism, a control circuit, a signal transmission circuit and a data receiving and displaying unit; the rear upper end of the vehicle body is provided with a breast board, video and audio equipment is arranged in front of the breast board, a belt waist buckle is arranged at the lower end of the middle part of the vehicle body, and the front end of the middle part of the vehicle body is hinged with a railing; the electric telescopic rods are provided with a plurality of same sets, the upper ends of the electric telescopic rods are respectively arranged at the lower ends of a plurality of supporting legs of the vehicle body, and a plurality of wheels of the vehicle body are respectively rotatably arranged at the lower ends of the electric telescopic rods; the detection mechanism is arranged on the lower end side of the cylinder body of one set of the electric telescopic rods; the storage battery, the power switch, the charging socket, the control circuit and the signal sending circuit are arranged in the element box; the power supply output ends of the power supply switch and the control circuit are respectively and electrically connected with the power supply input ends of the plurality of sets of electric telescopic rods; the signal output end of the detection mechanism is electrically connected with the signal input end of the signal sending circuit; the data receiving and displaying unit is application software installed in the intelligent Internet equipment.

2. The hemiplegia rehabilitation training device of claim 1 wherein the electric telescopic rod is a reciprocating electric push rod.

3. The hemiplegia rehabilitation training device of claim 1, wherein the detecting mechanism comprises a housing, a driving rubber wheel, a driven rubber wheel and an adjustable resistor, wherein an end rubber wheel is tightly sleeved outside an adjusting handle of the adjustable resistor, the driving rubber wheel and the driven rubber wheel are respectively rotatably installed at the left lower end of the housing and the left middle part of the housing, the left side of the driving rubber wheel is positioned outside the left lower end of the housing, the adjustable resistor is installed at the middle upper end of the housing, the driving rubber wheel is in contact with the driven rubber wheel, the driven rubber wheel is in contact with the end rubber wheel, the housing is installed at the side part of the lower end of the cylinder of the middle set of electric telescopic rod, and the left side of the driving rubber wheel is in contact with the right end of the piston rod of the electric telescopic rod.

4. The hemiplegia rehabilitation training device of claim 3 wherein the outer diameter of the driving rubber wheel is smaller than that of the driven rubber wheel, and the outer diameter of the driven rubber wheel is smaller than that of the tail rubber wheel.

5. The hemiplegic rehabilitation training device of claim 1, wherein the control circuit comprises two sets of time control switches, a power switch A, one end of the power switch A is electrically connected with the positive power input ends of the two sets of time control switches respectively, the negative power input ends of the two sets of time control switches A are electrically connected, and the time control switch is a full-automatic microcomputer time control switch.

6. The hemiplegia rehabilitation training device of claim 1 wherein the signal transmission circuit comprises a single chip module and a GPRS module, the single chip module and the GPRS module are electrically connected, two ends of a power input of the single chip module are respectively connected with two ends of a power input of the GPRS module, and a signal output end of the single chip module is connected with a signal input end of the GPRS module through a data line.

7. The hemiplegia rehabilitation training device of claim 1 wherein the data receiving and displaying unit is capable of receiving resistance variation data of the adjustable resistor transmitted by the GPRS module via the wireless mobile network and displaying the data on the display interface of the intelligent Internet device in a oscillogram or digital manner, and the timing subunit of the data receiving and displaying unit is capable of counting and displaying the dynamic change time of the resistance of the adjustable resistor.