CN209092532U - Ear canal inflammation auxiliary therapeutic instrument - Google Patents

Abstract

The utility model discloses ear canal inflammation auxiliary therapeutic instrument, including play button, differential circuit, electronic switch, battery voltage detection circuit, single-chip microcontroller, constant-current drive circuit, red-light LED and the battery powered for therapeutic equipment, one end of play button and the input terminal of electronic switch are respectively connected to battery, the other end of play button is connected to the control terminal of electronic switch by differential circuit, and the output end of electronic switch provides stable operating voltage for single-chip microcontroller and constant-current drive circuit；The output end of electronic switch is also connected with battery voltage detection circuit, battery voltage detection circuit is connected to the input interface of single-chip microcontroller, single-chip microcontroller output interface is separately connected electronic switch and constant-current drive circuit, single-chip microcontroller provides level hold signal for electronic switch, single-chip microcontroller controls constant-current drive circuit output constant current driven red-light LED work, guarantee the treatment feux rouges all-the-time stable that red-light LED issues, it is ensured that therapeutic effect；This therapeutic equipment structure is simple, functional reliability is high, red light treatment is stable and easy to use.

Description

Ear canal inflammation auxiliary therapeutic instrument

Technical field

The utility model relates to the field of medical instrument technology, specifically a kind of ear canal inflammation auxiliary therapeutic instrument.

Background technique

Tympanitis is to involve the inflammatory of all or part of structure of middle ear (including Eustachian tube, tympanum, tympanic antrum and mastoid air cell) Lesion is apt to occur in children.Tympanitis disease incidence is high, and the mode of conventionally employed drug therapy cannot directly act on lesions position, Therapeutic effect is undesirable.

Currently, carrying out adjuvant treatment to ear canal inflammation using laser has been achieved for ideal therapeutic effect.But it is existing Phototherapeutic instrument haves the defects that structure is complicated, inconvenient for use, easy Sun Huai and price are high, cannot still promote the use of on a large scale.

Utility model content

The purpose of this utility model is to provide a kind of ear canal inflammation auxiliary therapeutic instrument, the therapeutic equipment structure is simple, work can By property, high, red light treatment is stablized, and easy to use.

The technical scheme adopted by the utility model to solve the technical problem is as follows:

Ear canal inflammation auxiliary therapeutic instrument, including play button, differential circuit, electronic switch, battery voltage detection circuit, monolithic Machine, constant-current drive circuit, red-light LED and the battery for therapeutic equipment power supply, one end of play button and the input of electronic switch End is respectively connected to battery, and the other end of play button is connected to the control terminal of electronic switch, electronic switch by differential circuit Output end provide stable operating voltage for single-chip microcontroller and constant-current drive circuit；The output end of electronic switch is also connected with battery electricity Detection circuit is pressed, battery voltage detection circuit is connected to the input interface of single-chip microcontroller, and single-chip microcontroller output interface is separately connected electronics Switch and constant-current drive circuit, single-chip microcontroller provide level hold signal for electronic switch, and it is defeated that single-chip microcontroller controls constant-current drive circuit Constant current driven red-light LED works out.

Further, the battery both ends are also connected with wireless charging module.

The utility model has the beneficial effects that the on-off by controlling electronic switch makes therapeutic equipment in work come loading power Safer when making, single-chip microcontroller controls constant-current drive circuit output constant current driven red-light LED work, guarantees red-light LED hair Treatment feux rouges all-the-time stable out, it is ensured that therapeutic effect；This therapeutic equipment structure is simple, functional reliability is high, red light treatment is stable, And it is easy to use.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and examples:

Fig. 1 is the electrical principle block diagram of the utility model；

Fig. 2 is the electrical schematic diagram of the utility model；

Fig. 3 is the work flow diagram of single-chip microcontroller when the utility model is used；

Fig. 4 is that flow chart is interrupted in the detection of single-chip microcontroller low pressure when the utility model is used.

Specific embodiment

As shown in Figure 1, the utility model provides ear canal inflammation auxiliary therapeutic instrument, including play button S1, differential circuit 1, electricity Sub switch 2, battery voltage detection circuit 3, single-chip microcontroller U1, constant-current drive circuit 4, red-light LED 5 and the electricity for therapeutic equipment power supply One end of pond BAT, play button S1 and the input terminal of electronic switch 2 are respectively connected to battery BAT, the other end of play button S1 The control terminal of electronic switch 2 is connected to by differential circuit 1, the output end of electronic switch 2 is single-chip microcontroller U1 and constant current driving electricity Road 4 provides stable operating voltage；The output end of electronic switch 2 is also connected with battery voltage detection circuit 3, battery voltage detection electricity Road 3 is connected to the input interface of single-chip microcontroller U1, state real-time detection of the single-chip microcontroller U1 to cell voltage；The single-chip microcontroller U1 output End is separately connected electronic switch 2 and constant-current drive circuit 4, and single-chip microcontroller U1 is that electronic switch 2 provides level hold signal, single-chip microcontroller U1 controls constant-current drive circuit 4 and exports the work of constant current driven red-light LED 5.Rechargeable lithium battery can be used in battery BAT, The connector both ends of battery connect wireless charging module 6.

As shown in connection with fig. 2, the utility model provides a kind of specific circuit, and the positive and negative anodes of battery BAT are separately connected

The VDD foot and GND foot of charging module U3, is connected with capacitor C2 between the VDD foot and GND foot of charging module U3, CHS2 foot connects light emitting diode D2.When cooperating charging with external charging board, control chip carries out charging valve to lithium battery Reason；When the normal use that do not charge, CM foot and the conducting of GND foot of charging module are managed, so that systematically GM and power ground GND connects Logical, battery is powered outward.

The anode of battery BAT constitutes differential electricity by resistance R1 connection play button S1, capacitor C1, resistance R4 and resistance R6 Road 1, resistance R5 is as discharge resistance；PNP type triode Q1, resistance R2 and resistance R3 constitute electronic switch 2, resistance R3 and NPN Type triode Q2 connected one end is control terminal, the current collection of PNP type triode Q1 extremely output end；The resistance R12 that is connected in series with Diode D3 constitutes battery voltage detection circuit 3, and the VCC foot of voltage VLED connection single-chip microcontroller U1 provides power supply, and voltage VCMP connects The T0CLKO foot for meeting single-chip microcontroller U1, the detection signal as cell voltage；Constant-current drive circuit 4 is by operational amplifier U2 and three poles For pipe Q3 as main component, resistance R7, R8, R9 constitute the same of voltage regulator circuit input operational amplifier U2 after being connected with diode D1 The reverse input end of phase input terminal, operational amplifier U2 connects current sampling resistor R10.

In conjunction with shown in Fig. 3 and Fig. 4, in use, red-light LED 5 is placed in the ear of patient, in the initial state, triode Q2 does not have base current, and triode Q2 is off-state；At this point, triode Q1 is also off-state.

Play button S1 is pressed, power supply ties internal resistance r by the be of R1, differential capacitance C1, resistance R4 and triode Q2_beIt is formed The base current of triode Q2, so that triode Q2 is connected, triode Q2 controls triode Q1 conducting, so that power supply passes through Stabilized circuit outputting voltage VLED is whole system power supply；Meanwhile the base current of triode Q2 fills the capacitor C1 in circuit Electricity, so that base current is gradually reduced, after the regular hour, triode Q2 will be will disconnect, and triode Q1 is caused to disconnect, because This, in order to maintain the conducting of triode Q2, single-chip microcontroller U1 obtain it is electric after, high level is set to P30 foot, goes to maintain three poles by resistance R4 The conducting of pipe Q2 maintains the power supply of whole system.If in the reversed access of battery BAT mistake, triode Q1 and Q2 are Reverse bias, equal no current pass through, and form structural battery reverse connecting protection.

P31 foot is set to high level control constant-current drive circuit 4 and worked by single-chip microcontroller U1, while being started according to treatment time and being determined When enter power saving sleep state.Triode Q3 is the driving triode of red-light LED 5, and P31 foot high level is by resistance R7 in two poles Pipe D1 both end voltage forms metastable diode turn-on voltage, obtains more stable " base after resistance R8 and R9 decompression Quasi- voltage " is somebody's turn to do " reference voltage " compared with the pressure drop on current sampling resistor R10 is on operational amplifier U2, so that feux rouges The operating current of LED5 is equal with " reference voltage " is somebody's turn to do in current sampling resistor R10 both ends pressure drop, thus on red-light LED 5 To relative constant driving current, red-light LED 5 issues treatment feux rouges and is treated, after timing, the P30 of single-chip microcontroller Restore low level with P31 foot, terminates treatment.Over the course for the treatment of, single-chip microcontroller U1 can be made to enter power saving sleep state, do not disappeared Energy consumption.

The voltage VCMP of diode D3 is steady state value, and voltage VCMP is compared with voltage VLED, can sentence by single-chip microcontroller It whether too low powers off cell voltage, when being in low-voltage state, makes red-light LED flashing alarm, the P31 foot of single-chip microcontroller control at this time Output level is in high and low continuous switching.

In order to make the work of single-chip microcontroller, more efficiently single-chip microcontroller U1 can be set to two kinds of working conditions:

One, single-chip microcontroller U1 timing 5 minutes after timing reaches, wakes up single-chip microcontroller U1, sets low electricity to P30 and P31 foot Flat, entire therapeutic equipment power supply is disconnected, and therapeutic process terminates；Under the working condition, it is embedded in 500ms timing wake-up, for examining Cell voltage is surveyed, when cell voltage deficiency, red-light LED 5 is changed to flashing alarm.

Two, single-chip microcontroller U1 timing 5 minutes, nested inside 10ms second level sleep timing, wakes up change the output of P31 foot every time Low and high level state, make red-light LED 5 work in constant-current pulse driving condition；The 500ms for being embedded in detection cell voltage simultaneously is fixed When wake up；After timing reaches, single-chip microcontroller U1 is waken up, level is set low to P30 and P31 foot, terminates therapeutic process.

The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model Limitation；Anyone skilled in the art, it is all available in the case where not departing from technical solutions of the utility model ambit The methods and technical content of the disclosure above makes many possible changes and modifications to technical solutions of the utility model, or is revised as The equivalent embodiment of equivalent variations.Therefore, all contents without departing from technical solutions of the utility model, according to the utility model Technical spirit any simple modification, equivalent replacement, equivalence changes and modification made to the above embodiment are still fallen within practical In the range of the protection of new technique scheme.

Claims (2)

1. ear canal inflammation auxiliary therapeutic instrument, which is characterized in that including play button, differential circuit, electronic switch, battery voltage detection Circuit, single-chip microcontroller, constant-current drive circuit, red-light LED and the battery for therapeutic equipment power supply, one end of play button and electronic cutting The input terminal of pass is respectively connected to battery, and the other end of play button is connected to the control terminal of electronic switch by differential circuit, The output end of electronic switch provides stable operating voltage for single-chip microcontroller and constant-current drive circuit；The output end of electronic switch also connects Battery voltage detection circuit is connect, battery voltage detection circuit is connected to the input interface of single-chip microcontroller, single-chip microcontroller output interface difference Electronic switch and constant-current drive circuit are connected, single-chip microcontroller provides level hold signal for electronic switch, and single-chip microcontroller controls constant current and drives Dynamic circuit output constant current driven red-light LED work.

2. ear canal inflammation auxiliary therapeutic instrument according to claim 1, which is characterized in that the battery both ends are also connected with wirelessly Charging module.