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CN-224218549-U - Touch control circuit for baking lamp of physiotherapy instrument

CN224218549UCN 224218549 UCN224218549 UCN 224218549UCN-224218549-U

Abstract

The utility model discloses a touch control circuit of a baking lamp of a physiotherapy instrument, which comprises a power supply module, a control module, a heating module, a key input module, a display module, a buzzer alarm module and a safety protection module. The power module converts alternating current into stable direct current through a rectifier bridge and a filter capacitor to be supplied to the system. The control center is composed of a single chip microcomputer and is matched with an LED driving chip to realize coordination management of all modules. The heating module adjusts the conduction time of the controllable silicon through PWM signals and provides four power output modes to adapt to different temperature requirements. The user can set the treatment time and select the temperature gear by touching the keys, and the setting information is fed back in real time by the nixie tube and the status indicator lamp. The buzzer gives out sound prompt when the machine is started and the treatment is finished, so that the user experience is enhanced. In addition, the device is provided with a mechanical tilting switch, and once the inclination of the device exceeds a threshold value, the heating source is automatically cut off, and meanwhile, the device is also provided with an infrared receiving module, so that remote control can be realized.

Inventors

  • LUO LING
  • CHEN YANG

Assignees

  • 成都远洋中汇科技有限公司

Dates

Publication Date
20260508
Application Date
20250414

Claims (7)

  1. 1. A touch control circuit of a baking lamp of a physiotherapy instrument is characterized by comprising a power supply module, a control module, a heating module, a touch input module, a display module, a buzzer alarm module and a safety protection module, wherein the control module comprises a single chip microcomputer U3 and an LED driving chip U1, the single chip microcomputer U3 is used for processing user input, controlling the power of the baking lamp and monitoring the temperature, the LED driving chip U1 is used for controlling a nixie tube to display temperature and time information set by a user, the heating module comprises an optical coupler U4 and a controllable silicon Q3, receiving PWM signals of the control module and adjusting the power output of a heating tube, the touch input module comprises a touch KEY KEY1, a KEY2 and a KEY3, the KEY1 is configured as a time button, the KEY2 is configured as a temperature button, the KEY3 is configured as a start button, the RB4/KEY4 pin, the RB3/KEY 2 pin are sequentially connected to the single chip microcomputer U3 and used for setting treatment time, a temperature gear and an equipment switch, an external capacitor C11 is arranged at the CPA pin of the single chip U3, the display module comprises an optical coupler U4 and a controllable silicon Q3, PWM signal is received for adjusting the power output of the heating tube, the touch input module comprises a touch KEY KEY1, the touch KEY KEY2 is configured as a temperature button, the temperature button is configured as a start button, and the start button is connected to the control button, and the alarm module is used for controlling the alarm module to be used for closing and used for controlling and toppled and has the alarm function.
  2. 2. The physiotherapy instrument baking lamp touch control circuit according to claim 1, wherein the temperature gear root of the heating module is provided with four gears, the four gears sequentially comprise a warm gear, a low-temperature gear, a medium-temperature gear and a high-temperature gear according to gradual increase of power, and each gear is matched with the status indicator lamp.
  3. 3. The touch control circuit of the baking lamp of the physiotherapy instrument according to claim 2, wherein the control module controls the conduction state of the heating module through the thyristor so as to realize adjustment of different power gears.
  4. 4. The touch control circuit of the baking lamp of the physiotherapy instrument according to claim 3, wherein the treatment time is circularly switched through a time setting button, and the nixie tube LED1 is used for displaying the set treatment time in real time.
  5. 5. The touch control circuit of the baking lamp of the physiotherapy instrument of claim 4, wherein the dumping protection switch of the safety protection module is mechanical or electronic, and when the inclination angle of the equipment exceeds a set threshold value, the power supply of the heating module is automatically cut off.
  6. 6. The touch control circuit of the baking lamp of the physiotherapy instrument of claim 5, wherein the single-chip microcomputer U3 is connected with an infrared receiving module.
  7. 7. The physiotherapy instrument baking lamp touch control circuit according to claim 1, wherein the power supply module comprises a resistor Rong Jiangya circuit, a rectifying circuit, a filtering circuit, a voltage stabilizing circuit and a zero-crossing detection circuit, wherein the resistor Rong Jiangya circuit is used for reducing the voltage of input alternating current and comprises a current limiting resistor and a voltage reducing capacitor which are connected in series, the rectifying circuit is connected with the resistor-capacitor voltage reducing circuit and is used for converting the alternating current into pulsating direct current, the filtering circuit is connected with the rectifying circuit and is used for carrying out smooth filtering on the pulsating direct current, the voltage stabilizing circuit is connected with the filtering circuit and is used for outputting stable direct current voltage to supply power for the control circuit, and the zero-crossing detection circuit is used for detecting the zero crossing point of the alternating current and providing a zero-crossing signal for the thyristor Q3 triggering circuit so as to ensure that the thyristor is turned on or off at the zero crossing point.

Description

Touch control circuit for baking lamp of physiotherapy instrument Technical Field The utility model relates to a touch control circuit of a baking lamp of a physiotherapy instrument, and belongs to the technical field of electronic equipment control. Background The existing physiotherapy instrument baking lamp control system generally adopts a simple mechanical switch or relay to carry out power adjustment, cannot realize accurate temperature control, and lacks intelligent functions such as remote control, power-off memory and dynamic temperature compensation. In addition, traditional control mode easily leads to temperature fluctuation too big or excessive heating, influences physiotherapy effect, has the potential safety hazard even. Therefore, the intelligent, accurate temperature control, safe and reliable physiotherapy instrument baking lamp control circuit has important application value. Disclosure of utility model The utility model aims to provide a touch control circuit for a baking lamp of a physiotherapy instrument, which can effectively solve the problems. In order to solve the technical problems, the utility model is realized by the following technical scheme: The intelligent heating device comprises a power supply module, a control module, a heating module, a key input module, a display module, a buzzer alarm module and a safety protection module; The power module comprises a resistance-capacitance voltage reduction circuit, a rectifying circuit, a filter circuit, a voltage stabilizing circuit and a zero crossing detection circuit; The resistance-capacitance voltage reduction circuit is used for reducing the voltage of the input alternating current and comprises a current limiting resistor (RS 1) and a voltage reduction capacitor (C1), and the resistor R1 and the resistor R2 ensure that the voltage reduction capacitor C1 discharges rapidly after a power supply is disconnected, so that electric shock danger is prevented; The rectification circuit comprises a rectification bridge U2 (MB 6 SU) and is used for converting the alternating current after the voltage reduction into pulsating direct current for the whole control circuit to use; The filter circuit includes a filter capacitor E1 to reduce ripple and provide a smooth dc output. The voltage stabilizing circuit employs two voltage stabilizing diodes (D5 and D6) to provide a stable low voltage output; The zero-crossing detection circuit divides the voltage of the signal through a resistor R8, a resistor R9, a resistor R10 and a resistor R11, inputs the signal into the base electrode of a triode Q4 (MMBT 5551), and when the alternating voltage is zero, the voltage of the base electrode is lower than the conduction threshold value of the triode Q4, and the triode Q4 is cut off, so that the silicon controlled rectifier Q3 is opened or closed. The control module comprises a singlechip U3 (SC 8F 2892B) and an LED driving chip U1 (TM 1617), wherein the singlechip U3 is used for processing user input, controlling baking lamp power and monitoring temperature, and the LED driving chip U1 is used for controlling a nixie tube (LED 1) to display temperature and time information set by a user; The heating module comprises an optical coupler U4 (MOC 3022) and a silicon controlled rectifier Q3 (BT 136600E_B), the singlechip U3 drives the silicon controlled rectifier Q3 through the optical coupler U4, receives PWM signals of the control module, adjusts the power output of the heating pipe, and realizes the control of the baking lamp; The touch input module comprises touch KEYs KEY1, KEY2 and KEY3, wherein the KEY1 is configured as a time button, the KEY2 is configured as a temperature button, the KEY3 is configured as a start button, and the touch input module is sequentially connected to pins RB4/KEY4, RB3/KEY3 and RB2/KEY2 of the singlechip U3 and is used for setting treatment time, temperature gear and equipment switch; The display module comprises a nixie tube LED1 and status indicator lamps (D1-D5), and is driven by a display LED driving chip U1 and used for displaying treatment time and temperature gears; The buzzer alarm module is connected with the control module and used for starting up prompt and ending treatment alarm; The safety protection module is connected with the control module and used for closing the heating pipe when the machine is detected to topple over. The temperature gear root of the heating module is provided with four gears, and the four gears sequentially comprise a warm gear (power 70%, 25 second cycle after 1 minute operation), a low temperature gear (power 80%, 15 second cycle after 1 minute operation), a medium temperature gear (power 90%, 7 second cycle after 1 minute operation) and a high temperature gear (power 100%) according to the gradual increase of power, wherein each gear is matched with a state indicator lamp, D2 is the warm gear, D3 is the low temperature gear, D4 is the medium temperature gear and D5 is the high te