Anti-misoperation and electrode falling protection method

Abstract

The application discloses a kind of false operation and electrode drop protection method, system initialization opens electrode passage, when judging knob potentiometer lock, read the AD value of current knob potentiometer and save, whether electrode is dropped by the current detection of electrode sheet, if knob potentiometer is in locked state, then read the difference of current potentiometer AD value and save potentiometer AD value, when exceeding the threshold value set, it is determined that knob potentiometer is unlocked, otherwise, it is determined that knob potentiometer needs to be protected.The application can realize the locking function and electrode drop protection function of knob potentiometer, can solve the problem of electrode abnormal drop protection, and the problem of intensity adjustment knob misoperation in treatment process.The application avoids the possible misoperation in the use process of electric stimulation treatment equipment, effectively identifies and alarms the electrode drop in treatment process, and optimizes the control and management problem of electrode drop in the use process of electric stimulation treatment equipment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electrode anti-falling of electric stimulation therapy instrument, and particularly relates to a method for preventing misoperation and electrode falling. BACKGROUND

[0002] In the electric stimulation therapy instrument such as medium frequency, low frequency and interference electricity, a suction cup or a suction bowl is needed to adsorb the electrode sheet on the surface of human skin. The movement of the treated person or the insufficient negative pressure in the electrode suction cup will cause the adsorbed electrode to fall off.

[0003] In the use process of the electric stimulation therapy equipment, it is necessary to avoid the misoperation of non-medical personnel to ensure the normal progress of the treatment process. The existing interference electricity treatment generally adopts an encoder type knob, which lacks the necessary anti-misoperation performance and brings risks to the use of the electric stimulation therapy equipment. In particular, the electric stimulation intensity knob directly controls the current intensity through the human body, and once misoperation occurs, it will bring a bad treatment experience to the treated patient, and even cause the skin surface of the human body to be burned. In addition, the existing electrode falling protection method lacks flexibility, and once the electrode falls off, the initialization treatment program needs to be restarted, which brings many inconveniences to the use and management of the electric stimulation therapy.

[0004] At present, the existing electric stimulation therapy instrument equipment generally adopts the method of increasing the negative pressure in the electrode suction cup to ensure that the electrode suction cup does not fall off, but the excessive negative pressure in the suction cup will cause the skin to appear blisters and capillary rupture, affecting the use experience of the electric stimulation therapy instrument. There is no effective technical means for the protection of abnormal electrode falling in the existing technology. In order to prevent the electrode from falling off during the treatment process, an anti-falling medium frequency therapy instrument is disclosed in the existing technology, which comprises a therapy instrument body, a patch electrode and a fixing bag. The fixing bag comprises a cloth bag, a fixing frame, a top cover and a bandage. The cloth bag comprises a first cloth bag layer and a second cloth bag layer. The first cloth bag layer and the second cloth bag layer are openably and closably arranged. The fixing frame is fixedly connected to the middle part of the first cloth bag layer. The top cover is detachably connected to the top of the fixing frame. The bandage is fixedly connected to the outer side of the cloth bag. This technology prevents the electrode from abnormally falling off through a simple binding method. The fixing bag will isolate the contact degree of the electrode and the skin, which reduces the treatment effect.

[0005] In addition, if a pair of electrodes fall off at the same time, and the two electrodes contact each other after falling off, a short circuit of the treatment equipment will be formed, which brings a safety risk to the normal use of the electric stimulation therapy equipment. Therefore, the electrode falling detection is the premise of protection.

[0006] Therefore, it is necessary to study an effective method for preventing the misoperation of the current intensity knob and the electrode falling protection to solve the deficiencies of the electric stimulation therapy equipment. SUMMARY

[0007] Aiming at the problems of electrode abnormal peeling protection and the misoperation of the intensity adjusting knob during treatment, the application provides a method for preventing misoperation and protecting electrode peeling, which is used to solve the deficiencies of the electric stimulation treatment equipment.

[0008] The application solves the technical problems by the following scheme: a method for preventing misoperation and protecting electrode peeling, comprising the following steps.

[0009] Firstly, the system is initialized, and the electrode channel is opened.

[0010] Secondly, it is judged whether the knob potentiometer (knob potentiometer knob) is locked or not. The timer t1 seconds is counted. If the knob potentiometer is operated within t1 seconds, it is judged that the knob potentiometer is not locked. If the knob potentiometer is not operated for more than t1 seconds, the knob potentiometer is locked, the AD value of the current knob potentiometer is read, and the AD value of the current knob potentiometer is saved.

[0011] Thirdly, it is judged whether the electrode is peeled or not. The current of the electrode sheet is detected to judge whether the electrode is peeled or not. If the electrode peeling time is judged to be more than t2 seconds, the peeling operation is processed. If the electrode is judged to be re-adsorbed within t2 seconds, the electrode is considered to be re-adsorbed.

[0012] Fourthly, the unlocking operation of the knob potentiometer (actually, the knob potentiometer is rotated to the left). If the knob potentiometer is in the locked state, the AD value (detection voltage value) of the current potentiometer is read, and it is judged that the difference between the AD value of the current potentiometer and the saved AD value of the potentiometer exceeds the set threshold value (for example, the threshold value is V1 volt, and the saved AD value of the potentiometer - the AD value of the current potentiometer > V1). It is determined that the knob potentiometer is unlocked.

[0013] Regarding the locking of the knob potentiometer, for example, the current increases when the knob is rotated to the right, and the current decreases when the knob is rotated to the left. In order to prevent the sudden increase of the current caused by the misoperation of rotating the knob to the right from bringing discomfort to the human body, the locking function is set, that is, the rotation of the knob to the right will not cause the current to increase. The knob needs to be rotated to the left first and then to the right to be selected, so as to unlock the current to the right to increase.

[0014] Fifthly, the protection of the knob potentiometer (actually, the knob potentiometer is rotated to the right). If the knob potentiometer is in the locked state, the AD value of the current potentiometer is read, and it is judged that the difference between the AD value of the current potentiometer and the saved AD value of the potentiometer exceeds the set threshold value (for example, the threshold value is V1 volt, and the AD value of the current potentiometer - the saved AD value > V1). It is determined that the knob potentiometer needs to be protected, and the potentiometer is returned to the last locking position.

[0015] Sixthly, the treatment time is over, and the knob potentiometer is automatically reset.

[0016] The first step is to determine whether the electrode channel is open. If the electrode channel is not open, the program sets a shedding flag. If the timer is occupied, the program returns to clear the shedding flag. If the timer is not occupied, the program closes the timer and ends the program. If the electrode channel is open, the second step is executed.

[0017] The third step is to handle the shedding operation. The shedding flag is set, a shedding instruction is sent to the screen, a sound alarm is emitted, the timer is closed, the potentiometer is reset, and the relay is closed to stop the electrode current output.

[0018] If the electrode is not shed in the third step, the program determines whether the shedding flag is set. If the shedding flag is not set, the program determines whether the timer is occupied and whether the output intensity is greater than 0. If either condition is not met, the program returns to continue determining. If both conditions are met, the program opens the timer and starts counting. The program then determines whether the knob potentiometer is rotating. If the knob potentiometer is not rotating, the program determines whether the set countdown seconds have ended. If the countdown has not ended, the program returns to determine whether the knob potentiometer is locked. If the countdown has ended, the program sets the knob potentiometer flag, obtains the AD detection value of the channel potentiometer, and saves the AD detection value. The program then closes the timer and ends the program.

[0019] After the system is powered on, the ADC module and the timer module involved are initialized.

[0020] The knob is locked, and the loop detection is started. When the current potentiometer AD value is greater than the saved potentiometer AD value, the controller sends a control instruction to force the knob potentiometer to rotate to the last locked position value. The program then determines whether the potentiometer AD detection voltage value is greater than the set value V1 volt. If the potentiometer AD detection voltage value is greater than the set value V1 volt, the program returns to determine and continues to execute the knob potentiometer rotation to the last locked position value. If the potentiometer AD detection voltage value is not greater than the set value V1 volt, the knob potentiometer stops rotating, and the program ends.

[0021] If the electrode is shed in the third step, the timer is opened and starts counting. If the electrode is reattached within t seconds, the program returns to continue determining whether the electrode is shed. If the electrode is not reattached within t seconds, the shedding flag is set, a shedding instruction is sent to the display screen, a sound alarm is emitted, the timer is closed, the potentiometer is reset, the relay is closed to stop the electrode current output, and the program ends.

[0022] If the falling flag is set in the third step, the timer is closed, the falling flag is cleared, the timer occupation is cleared, and the timer counting is cleared, and then the program is exited.

[0023] In the fourth step, it is judged whether the knob potentiometer is rotating, if the knob potentiometer is rotating, the AD detection voltage value is saved, the timer counting is cleared, and the knob potentiometer is judged whether rotating.

[0024] The application has the advantages that the knob potentiometer has the locking function and the electrode falling protection function, the electrode abnormal falling protection problem and the intensity adjustment knob misoperation problem in the treatment process are solved, and the knob potentiometer can be rotated under the control of the controller.

[0025] Once the electrode abnormally falls, if the electrode can be re-adsorbed on the human body surface within 4s, the original prescription treatment is continued. Once the treatment prescription in the electric stimulation device starts to work, the potentiometer is automatically locked within 30s, the current intensity is kept unchanged in the treatment process, and the misoperation leading to the excessive current is prevented.

[0026] The solution of the knob intensity control adopted by the application is that the intensity knob is rotated to the left to realize unlocking, and then the treatment intensity (the current intensity) can be increased again when the right adjustment is performed.

[0027] The method realizes the misoperation processing of the intensity adjustment knob, realizes the disposal of the electrode falling, avoids the misoperation of the intensity adjustment knob, and realizes the automatic judgment and power-off disposal of the electrode falling through the channel running judgment, the intensity knob locking and the electrode falling judgment according to the set running control strategy (algorithm).

[0028] Through the control method, the misoperation that may occur in the use process of the intermediate frequency, low frequency and interference electric stimulation treatment device can be avoided, the electrode falling that occurs in the treatment process can be effectively identified and alarmed, and the control and management problem of the electrode falling in the use process of the electric stimulation treatment device is optimized. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a misoperation prevention and electrode falling protection method flow chart.

[0030] Figure 2 It is an electrode falling detection circuit. DETAILED DESCRIPTION

[0031] The application is further described below in combination with the drawings and examples.

[0032] Embodiment 1: A method for preventing misoperation and electrode falling off, to solve the problem of electrode abnormal falling off protection during the use of electric stimulation treatment equipment, and the problem of misoperation of the intensity adjustment knob during treatment. The program flow of the method is shown in Figure 1 , and specifically includes the following steps.

[0033] After the system is powered on, the ADC module and the timer module involved in the control method are first initialized.

[0034] First, it is determined whether the electrode channel is open. If the electrode channel is not open, the falling off flag set by the program is cleared, and it is then determined whether the timer is occupied. If it is occupied, the program returns to clear the falling off flag set by the program. If it is not occupied, the timer is turned off, and the program ends.

[0035] If the electrode channel is open, it is determined whether the knob potentiometer is locked. If the knob potentiometer is locked, the current AD detection voltage value of the knob potentiometer is then read. If the detection voltage value is not greater than the saved potentiometer AD set value, the knob potentiometer lock flag is cleared, and the program returns to continue to determine whether the knob is locked, and the cycle detection begins. Until the current potentiometer AD value is greater than the saved potentiometer AD value, the controller sends a control command to forcibly rotate the knob potentiometer to the last locked position value, and it is determined whether the potentiometer AD detection voltage value is greater than the set value of 2 volts. If the potentiometer AD detection voltage value is greater than the set value of 2 volts, the program returns to the determination and continues to execute the rotation of the knob potentiometer to the last locked position value. If the potentiometer AD detection voltage value is not greater than the set value of 2 volts, the rotation of the knob potentiometer is stopped, and the program ends.

[0036] If it is determined that the knob potentiometer is not locked, it is then determined whether the electrode is falling off. If it is determined that the electrode is falling off, the timer is turned on to start timing. If the electrode is reattached within 4 seconds, the program returns to the cycle to continue to determine whether the electrode is falling off. If the electrode is not reattached within 4 seconds or more, the falling off flag is set, a falling off command is sent to the display screen, an audible alarm is sounded, the timer is turned off, the timer is reset, the relay is turned off to stop the electrode current output, and the program ends.

[0037] If the electrode is determined to be not detached, it is further determined whether the detachment flag bit is set. If the detachment flag bit is set, the timer is closed, the detachment flag is cleared, and the timer occupation is cleared. After the timer counting is cleared, the program is exited. If the detachment flag bit is not set, it is further determined whether the timer is occupied and whether the output intensity is greater than 0. If one of the conditions that the timer is not occupied and the output intensity is greater than 0 is not met, the program returns to continue to determine. Until the conditions that the timer is occupied and the output intensity is greater than 0 are met, the timer is opened and the counting is started. The program continues to determine whether the knob potentiometer is rotating. If the knob potentiometer is rotating, the AD detection voltage value is saved, the timer counting is cleared, and the program returns to continue to determine whether the knob potentiometer is rotating. If the knob potentiometer is not in the rotating state, it is determined whether the set countdown seconds of the lock setting are ended. If the set countdown is not ended, the program returns to continue to determine whether the knob potentiometer is locked. If the set countdown is ended, the knob potentiometer flag bit is set, the AD detection value of the channel potentiometer is obtained, and the AD detection value is saved. Then, the timer is closed, and the program is ended.

[0038] By using the control method based on the above execution process, the possible misoperation of the intermediate frequency, low frequency, interference electric, etc. during the use of the electric stimulation treatment device can be avoided, and the electrode detachment occurring during the treatment process can be effectively identified and alarmed, thereby optimizing the control and management problem of the electrode detachment during the use of the electric stimulation treatment device.

[0039] Embodiment 2: The improved method based on embodiment 1, the potentiometer is a knob potentiometer, which can be controlled to rotate. Once the electrode is abnormally detached, if it can be re-adsorbed to the human body surface within 4s, the original prescription treatment will continue. Once the treatment prescription of the electric stimulation device starts to work, the potentiometer will be automatically locked within 30s, the current intensity during the treatment process is kept unchanged, and the misoperation leading to excessive current is prevented.

[0040] The solution of the knob intensity control is to rotate the intensity knob to the left to unlock, and then to the right to adjust the treatment intensity (to increase the current intensity).

[0041] The method realizes the misoperation processing of the intensity adjustment knob, realizes the disposal of the electrode detachment, avoids the misoperation of the intensity adjustment knob, and realizes the automatic judgment and power-off disposal of the electrode detachment through the channel running judgment, the intensity knob locking, and the electrode detachment judgment.

[0042] By adopting the control method, the misoperation possibly occurring in the use of the electric stimulation treatment device can be avoided, and the electrode falling off occurring in the treatment process can be effectively identified and alarmed, and the control and management problem caused by the electrode falling off in the use of the electric stimulation treatment device is optimized.

[0043] An electrode falling off protection circuit based on the above method, the protection circuit is mainly aimed at the real-time monitoring problem of electrode falling off, and the electrode falling off detection and protection circuit provides hardware support for constructing a microcontroller closed loop control and realizing dynamic monitoring of the electric stimulation treatment process.

[0044] The electrode falling off detection circuit is a prerequisite for electrode falling off protection. The core of the electrode falling off detection circuit is to detect the electrode current. Figure 2 In this embodiment, the electrode falling off detection circuit includes an alternating current transformer 1, an electrode 2, a mutual inductor 3, a sampling resistor 4, a precision full-wave rectification amplification circuit 5, a four-stage filter circuit 6, and a current sampling clamping circuit 7. The resistance and capacitance values of each part of the electrode falling off detection circuit are shown in the following table. Figure 2 The alternating current transformer 1 is a synthesized sine wave generated at the front end of the electric stimulation treatment device after modulation and carrier wave. The baseline of the sine wave is 0, and the sine wave has a positive half cycle and a negative half cycle. After being boosted by the single-phase alternating current transformer, the signal is converted into left and right single-phase alternating current of the same frequency. DJ+ and DJ- are outputted at the secondary side of the transformer and connected with the treatment electrode. The electrode is applied to the human body through the electrode suction cup for electric stimulation treatment.

[0045] The mutual inductor 3 is used for inducting the alternating current signal acting on the human body and converting it into an alternating voltage signal (the amplitude is about 0.5V) through the sampling resistor 4. Since the alternating voltage signal is relatively weak, it cannot be rectified and filtered by ordinary rectification method. Here, the precision rectification amplification circuit constructed by the operational amplifier is used to rectify and amplify the voltage signal converted after the mutual inductor output. The amplification multiple is 5 times. Then, the rectified and amplified 5 times is filtered by the four-stage filter circuit 6, and the output value is ensured to be less than 3.3V through the clamping circuit 7. The final output value Current_1 is outputted to the ADC module of the microcontroller, the current is detected by the microcontroller, and the electrode falling off protection is realized.

[0046] The principle of electrode falling off protection is that if there is no current flowing between DJ+ and DJ- after the electrode falls off, the output value Current_1 is 0. As long as 0V is outputted through the circuit, the microcontroller can detect 0V voltage through the ADC module, that is, it is judged that the electrode falls off, and the microcontroller triggers the alarm.

[0047] The electrode falling detection circuit is suitable for direct use of a controller with 3.3V ADC detection. RP2 in the sampling resistor 4 is an adjustable resistor, which is used for baseline adjustment of the entire circuit to eliminate the baseline interference caused by the voltage transformer or transformer ratio error. Real-time monitoring of the electrode suction cup state during treatment can be realized, and the change of the treatment current can be extracted to avoid excessive current flowing through the human body during treatment and cause electric injury to the patient.

[0048] Based on the above circuit, the precision full-wave rectification amplification circuit adopted is a precision rectification amplification circuit constructed by operational amplifiers U1A and U2B. The same direction input end of the operational amplifier U2B is grounded, and the reverse input end is connected to the sampling resistor through the resistor R1. The same direction input end of the operational amplifier U1A is grounded, and the reverse input end is connected to the sampling resistor through R2. The reverse input ends of the operational amplifiers U1A and U2B are connected in series with the resistor R3 and the resistor R4 in sequence. The common end of the resistor R3 and the resistor R4 is connected to the output end of the operational amplifier U1A through the anti-reverse diode D1. The output end of the operational amplifier U1A is connected to the reverse input end thereof through the anti-reverse diode D2.

[0049] The fourth-order filter circuit 6 is constructed by operational amplifiers U1C and U2D. The output end of the operational amplifier U2B is connected to the same direction input end of the operational amplifier U2C through the resistor R10 and the resistor R11. The same direction input end of the operational amplifier U2C is grounded through the capacitor C5. The reverse input end of the operational amplifier U2C is connected to the output end thereof. The common end of the resistor R10 and the resistor R11 is connected to the reverse input end of the operational amplifier U2C through the capacitor C3. The output end of the operational amplifier U2C is connected to the same direction input end of the operational amplifier U2D through the resistor R8 and the resistor R9. The same direction input end of the operational amplifier U2D is grounded through the capacitor C6. The reverse input end of the operational amplifier U2D is connected to the output end thereof. The common end of the resistor R8 and the resistor R9 is connected to the reverse input end of the operational amplifier U2D through the capacitor C1.

[0050] In the embodiment 3, the knob potentiometer is a motor potentiometer. When the knob is rotated to the right, the current increases, and when the knob is rotated to the left, the current decreases. In order to prevent the sudden increase of the current caused by the right rotation of the knob from causing discomfort to the human body, a locking function is set, i.e. the right rotation of the knob does not cause the increase of the current. The right rotation of the knob can only be realized after the left rotation of the knob, so as to unlock the current to be increased.

[0051] The method comprises the following steps.

[0052] In the first step, the system is initialized, and the electrode channel is opened (i.e. the knob potentiometer is opened).

[0053] Second step, judge whether the knob potentiometer is locked, through the timer 30 seconds timing, if the knob potentiometer has operation within 30 seconds, it is judged that it is not locked, if more than 30 seconds without operating knob potentiometer, the knob potentiometer is locked, read the current AD value, and save the AD value.

[0054] Third step, judge whether the electrode is off, through the current detection of electrode sheet to judge whether the electrode is off. If the electrode off time is judged to be more than 4 seconds, the off operation is processed (operation: set off flag, send off instruction to the screen, sound alarm, close the timer, reset the potentiometer, close the relay to stop the electrode current output); if the electrode is judged to be re-adsorbed within 4 seconds, it is considered that the electrode is re-adsorbed.

[0055] Fourth step, the unlocking operation of the knob potentiometer (actually the knob potentiometer rotates to the left), if the knob potentiometer is in the locked state, read the current potentiometer AD value, judge the difference between it and the saved AD value exceeds the set threshold 1 (V1 volt), that is, saved AD value-current potentiometer AD value>V1, it is determined that the knob potentiometer is unlocked.

[0056] Fifth step, the protection of the knob potentiometer (actually the knob potentiometer rotates to the right), if the knob potentiometer is in the locked state, read the current potentiometer AD value, judge the difference between it and the saved AD value exceeds the set threshold 1 (V1 volt), that is, current potentiometer AD value-saved AD value>V1, it is determined that the knob potentiometer needs to be protected, and the potentiometer is rotated to the last locked position.

[0057] Sixth step, the treatment time is over, the knob potentiometer is automatically reset.

[0058] The embodiment can realize the locking function and the electrode off protection function of the knob potentiometer.

[0059] It should be understood that the above specific embodiments of the present application are only used for illustrative or explanatory purposes of the principles of the present application, and do not constitute a limitation on the present application. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present application shall be included in the protection scope of the present application.

Claims

1. A misoperation and electrode falling protection system, comprising an ADC module, a timer module, a controller, a knob potentiometer and an electrode sheet, characterized in that, Module 1: system initialization, opening electrode channel; after the system is powered on, the involved ADC module and timer module are first initialized; after initialization, it is judged whether the electrode channel is opened, if the electrode channel is not opened, the falling flag bit set by the program is cleared, and then it is judged whether the timer is occupied, if the timer is occupied, it is returned to clear the falling flag bit set by the program again, if the timer is not occupied, the timer is closed and the program is ended, if the electrode channel is opened, module 2 is executed; Module 2: judging whether the knob potentiometer is locked, through timer t1 second timing, if the knob potentiometer is operated within t1 seconds, it is judged that it is not locked and the timer timing is cleared and it is returned to continue judging whether the knob potentiometer is locked; if there is no operation of the knob potentiometer for more than t1 seconds, the knob potentiometer is locked, the AD value of the current knob potentiometer is read and the AD value of the current knob potentiometer is saved; Module 3: judging whether the electrode is falling, judging whether the electrode is falling through the current detection of the electrode sheet; the current detection is realized through an electrode falling detection circuit, which comprises an alternating current transformer, a mutual inductor, a sampling resistor, a precision full-wave rectification amplification circuit, a four-order filter circuit and a current sampling clamping circuit, the mutual inductor senses the alternating current signal of the electrode sheet and converts it into an alternating voltage signal through the sampling resistor, and then the alternating voltage signal is rectified and amplified through the precision full-wave rectification amplification circuit, filtered through the four-order filter circuit and clamped through the clamping circuit, and then the output signal is transmitted to the ADC module to realize current detection; if it is judged that the electrode is falling, the timer is opened to start timing, if the electrode is re-adsorbed within t2 seconds, it is considered that the electrode is re-adsorbed and the original electric stimulation treatment prescription is continued to be executed; if the electrode falling time is judged to be more than t2 seconds, a falling treatment operation is performed, the falling treatment operation comprises setting the falling flag, sending the falling instruction to the screen, simultaneously issuing a sound alarm, closing the timer, resetting the knob potentiometer, closing the relay to stop the current output of the electrode sheet; Module 4: unlocking operation of the knob potentiometer, if the knob potentiometer is in the locked state, the current knob potentiometer AD value is read, and when the difference between the saved knob potentiometer AD value and the current knob potentiometer AD value exceeds the set threshold V1 volt, it is determined that the knob potentiometer is unlocked; if it is detected that the knob potentiometer is rotating during the unlocking judgment process, the AD detection voltage value is saved, the timer timing is cleared and it is returned to continue judging whether the knob potentiometer is rotating; Module 5: protection of the knob potentiometer, if the knob potentiometer is in the locked state, the current knob potentiometer AD value is read, and when the difference between the current knob potentiometer AD value and the saved knob potentiometer AD value exceeds the set threshold V1 volt, it is determined that the knob potentiometer needs to be protected, and the knob potentiometer is rotated to the last locked position; Module 6: treatment time is over, the knob potentiometer is automatically reset.

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