CN205120985U - Rotation operations detecting circuit - Google Patents
Rotation operations detecting circuit Download PDFInfo
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- CN205120985U CN205120985U CN201520895409.4U CN201520895409U CN205120985U CN 205120985 U CN205120985 U CN 205120985U CN 201520895409 U CN201520895409 U CN 201520895409U CN 205120985 U CN205120985 U CN 205120985U
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Abstract
The utility model provides an electric appliances's rotation operations detecting circuit has: photosensor detects the rotation operations of rotary switch, above -mentioned photosensor's output signal is inputed to the input terminal, the control part is according to the incoming signal of this input terminal control electric appliances's action, its characterized in that still has: current -voltage conversion unit between above -mentioned photosensor and above -mentioned input terminal, is one of them backs of two kinds of different magnitude of voltages with above -mentioned output signal's current transformation, and above -mentioned input terminal is given in the input. Through the utility model discloses, rotate knob switch does not in any case receive the influence of photosensor's infrared interdiction volume, and the control part can be accurate detects the rotatory state of rotary switch, controls electric appliances.
Description
Technical field
The utility model relates to the rotation process detecting circuit of electric equipment products, when particularly relating to rotation rotary switch, can carry out the rotation process detecting circuit of corresponding action control.
Background technology
By installing various switch in electric equipment products, control the various functions of electric equipment products.Such as, air-conditioning, by installing rotary switch on a remote control, rotates the temperature that rotary switch just can control air-conditioning.In addition, be button when what telepilot was installed, also can regulate temperature by pressing keys.
By rotating rotary switch, when regulating the temperature of air-conditioning, as detect this rotary switch rotation status detect one of means, use sense optical sensor more.Here, between the light emitting diode forming photosensitive sensor and phototransistor, the veil that the tooth of the gear utilizing rotary switch to rotate is the same, ultrared by being interdicted or not having to interdict the rotation status detecting rotary switch by judging that light emitting diode exports.More, still reducing temperature to be confirmed to be raised temperature, by installing two photosensitive sensors arranged side by side, detecting the sense of rotation of rotary switch.
As shown in Figure 1, this rotation process detecting circuit, photosensitive sensor 10a is connected with input terminal 25a and 25b of control part 30 respectively with the lead-out terminal of photosensitive sensor 10b, control part 30 is by detecting the input voltage of these terminals, detect user rotary switch toward which direction is regulated, that is, can detect is temperature increased also to be reduction of.
Wherein, between each light emitting diode of photosensitive sensor 10a and 10b and ground connection, be inserted with current limitation resistor respectively, between the emitter of each phototransistor and ground connection, be inserted with the electric capacity eliminated and disturb respectively.
In addition, as shown in Figure 2, the mobile corresponding output voltage characteristic figure of the veil between photosensitive sensor 11 infrared ray, when the infrared ray of photosensitive sensor 11 does not have crested thing 12 to interdict (figure slightly), output HIGH voltage U1, when the infrared ray of photosensitive sensor 11 has by (as shown in Figure 3) during blocking, output LOW voltage U3.But, from the change procedure of infrared ray without high voltage U1 during blocking to low-voltage U3 when having a blocking, be not become low-voltage immediately from high voltage, but the medium voltage U2 having to cushion.Such as, during rotation rotary switch (figure slightly), when the infrared ray of photosensitive sensor 11 is without blocking, photosensitive sensor 11 exports the high voltage of 3.3v.When the infrared ray of photosensitive sensor 11 has blocking, photosensitive sensor 11 exports the low-voltage of 0v.Further, according to the rotation amount of rotary switch by the umber of pulse of photosensitive sensor 11 exporting change, then control part 30 is based on data such as umber of pulses, regulates the design temperature of air-conditioning.
If CPU is as control part 30, when the voltage output end of the photosensitive sensor 11 I/O input terminal common with CPU is connected, I/O input terminal can only detect the magnitude of voltage in high voltage and low-voltage certain limit.Such as, high voltage is 3.3v, and when low-voltage is 0v, the high-voltage value inspection range of I/O input terminal is the low-voltage inspection range of 2.64v-3.38v, I/O input terminal is 0v-0.66v.Therefore, regulating temperature by rotating rotary switch, when rotating rotary switch, even if veil 12 has a little deviation, as long as in the high voltage of the input voltage of I/O input terminal and the inspection range of low-voltage, just can carry out corresponding action process.
But, according to disposal route in the past, following problem can be there is: when user rotates rotary switch slowly, veil 12 between photosensitive sensor 11 infrared ray that likely only blocking is a part of, within the scope of the intermediate voltage value that the input voltage that output voltage likely falls into I/O input terminal can't check.As mentioned above, when medium voltage is 0v-3.3v, the range of voltage values that can't check is 0.66v-2.64v.When rotating rotary switch, if the output voltage values of the photosensitive sensor of correspondence 10 is the wherein some magnitudes of voltage that can't check in range of voltage values just, then control part 30 can not carry out corresponding action process.If user continues the rotary switch rotating the state that can't check, the position veil 12 that rotary switch the stops infrared ray that also likely blocking is a part of just.As this situation, when rotating rotary switch, the intermediate voltage value that can't check from the intermediate voltage value that can't check to the next one, control part 30 can produce and detect abnormal state, and the situation that can't check action occurs.
Therefore, user can be produced and obviously specially have rotated rotary switch, but temperature does not but have vicissitudinous rough sledding.
Utility model content
The utility model is made to solve the problem, its object is to: the rotation process detecting circuit that a kind of electric equipment products are provided, rotate rotary switch in any case, not by the impact of the ultrared blocking amount of photosensitive sensor, control part can detect the rotation status of rotary switch accurately, control apparatus product.
For solving above-mentioned problem, rotation process detecting circuit of the present utility model, has: photosensitive sensor, detects the rotation process of rotary switch; Input terminal, inputs the output signal of above-mentioned photosensitive sensor; Control part, according to the action of the input signal control apparatus product of input terminal; It is characterized in that also having: current-voltage conversion portion, between above-mentioned photosensitive sensor and above-mentioned input terminal, be after one of them magnitude of voltage of two kinds of different magnitudes of voltage by the current transformation of above-mentioned output signal, input to above-mentioned input terminal.
In addition, above-mentioned current-voltage conversion portion is compound transistor loop, is more than setting or is less than setting according to the electric current exported by above-mentioned photosensitive sensor, converts different magnitudes of voltage.
In addition, when the current value exported by above-mentioned photosensitive sensor is more than setting, above-mentioned current-voltage conversion portion is transformed to high-voltage value, and when the current value that above-mentioned photosensitive sensor exports is less than setting, above-mentioned current-voltage conversion portion is transformed to low voltage value.
In addition, above-mentioned compound transistor loop is made up of the 1st triode and the 2nd triode.The base stage of the 1st triode is connected with above-mentioned photosensitive sensor lead-out terminal via resistance, and grounded emitter, is inserted with resistance between this base stage and this emitter.The base stage of the 2nd triode is connected via the collector of resistance with above-mentioned 1st triode, emitter is connected with power supply, be inserted with resistance between this base stage and this emitter, be inserted with resistance between collector and ground connection, this collector is also connected with the input terminal of above-mentioned control part.
In addition, above-mentioned control part can also adjust the air output of on-board air conditioner.
The rotation process detecting circuit of electric equipment products, by additional current-voltage conversion portion, the input terminal of control part only has two kinds of input voltages, namely only two states is divided into, the medium voltage state that can't check can be avoided like this, therefore user rotates rotary switch in any case, also there will not be misoperation and unresponsive situation.
Accompanying drawing explanation
Fig. 1 is the structured flowchart representing the rotation process detecting circuit be made up of photosensitive sensor in conventional art.
Fig. 2 is the output voltage characteristic figure of photosensitive sensor in the rotation process detecting circuit representing Fig. 1.
Display illustration when Fig. 3 is the infrared ray crested thing blocking representing photosensitive sensor.
Fig. 4 is the structured flowchart representing that the rotation process detecting circuit involved by the utility model is formed.
Fig. 5 is the loop diagram representing that the rotation process detecting circuit involved by the utility model is formed.
Fig. 6 is the loop diagram in the current-voltage conversion loop represented involved by the utility model.
Embodiment
Below, the rotation process detecting circuit being applicable to the utility model embodiment is described with reference to accompanying drawing.Wherein, in the rotation detecting circuit of embodiment of the present utility model, with rotary switch, temperature adjustment is carried out to on-board air conditioner and be described.
Fig. 4 is the structured flowchart representing that the rotation process detecting circuit involved by embodiment of the present utility model is formed.
As shown in Figure 4, rotation process detecting circuit is by operating detecting element 10, and electric current efferent 15, current-voltage conversion portion 20, voltage input part 25, control part 30 is formed.
Operation detecting element 10, here, veil 12, by forming the light-emitting component (LED etc.) of photosensitive sensor 10 and receiving the blocking of light path between optical element (phototransistor etc.), detects the rotation process (figure slightly) of user to rotary switch.
Electric current efferent 15, is equivalent to the lead-out terminal of photosensitive sensor 10, and the light path of above-mentioned photosensitive sensor is interdicted completely, without blocking and when interdicting a part of light path, exports each self-corresponding current value.
The current transformation that above-mentioned electric current efferent 15 exports is wherein some magnitudes of voltage of two kinds of magnitudes of voltage by current-voltage conversion portion 20.That is, using two triodes as switch, by being connected with multiple resistance, the current value that electric current efferent 15 is exported is transformed to wherein a kind of voltage of high voltage or low-voltage.
Voltage input part 25, receives one of them of the two kinds of magnitudes of voltage converted by current-voltage conversion portion 20.Here, voltage input part 25 is I/O terminals of the common input terminal of CPU as control part 30.
Control part 30, is here described as CPU, also can be made up of hardware-in-the-loop.The process that control part 30 is specified by the signal formed the magnitude of voltage received by voltage input part 25, the temperature of regulating and controlling air-conditioning.
Below, be described with reference to the action of Fig. 5 and Fig. 6 to rotation process detecting circuit.Fig. 5 is the loop diagram of the formation rotation process detecting circuit represented involved by the utility model, and Fig. 6 is the enlarged drawing of current-voltage conversion loop 40a and 40b representing current-voltage conversion portion 20 correspondence.
In the utility model, in order to detect rotation amount and the sense of rotation of rotary switch, use sense optical sensor 10a and photosensitive sensor 10b two photosensitive sensors.The current-voltage conversion loop that the output current of photosensitive sensor 10a and photosensitive sensor 10b is corresponding is 40a and 40b respectively.Because photosensitive sensor 10a with 10b is identical, corresponding current-voltage conversion loop 40a with 40b is also identical, therefore be described with photosensitive sensor 10a and corresponding current-voltage conversion loop 40a, the explanation of photosensitive sensor 10b and corresponding current-voltage conversion loop 40b is omitted, and does not do repeat specification.Rotation process detecting circuit in Fig. 5 involved by the utility model is identical with Fig. 1, is provided with current limitation resistor and eliminates the capacity cell disturbed.
When user rotates rotary switch, the electric current exported from the photosensitive sensor 10 be connected with power supply is input to current-voltage conversion loop 40a.As shown in Figure 6, the collector of photo detector phototransistor of photosensitive sensor 10a is connected with the direct supply of 3.3v, and emitter is connected with the base of the 1st triode of NPN type via resistance R1.In addition, between the base of the 1st triode and emitter, be connected with resistance R2, and this grounded emitter.
When the light that the light-emitting component LED of photosensitive sensor 10a sends does not have crested thing to interdict, light is delivered to phototransistor, this phototransistor carries out out process, because the emitter from this phototransistor flows into enough electric currents via resistance R1 between the base stage and emitter of the 1st triode of current-voltage conversion portion 40a, and based on the switching characteristic of triode, so the switch of the 1st triode becomes out, voltage between base stage and emitter is approximately 0.6v, i.e. between the collector and emitter of the 1st triode, electric current can flow.In addition, the base stage of the 2nd triode of positive-negative-positive is connected with the collector of the 1st triode via resistance R3, resistance R4 is connected with between the emitter of the 2nd triode and base stage, therefore when the 1st triode is for opening, the direct supply 3.3v voltage be connected to by emitter with the 2nd triode is by the voltage of resistance R3 and resistance R4 dividing potential drop, be applied to the base stage of the 2nd triode, and then electric current can flow to base stage from the emitter of the 2nd triode.
Therefore according to above-mentioned, the voltage between the emitter of the 2nd triode and base stage is about 0.6v, can carry out the flowing of electric current between the emitter of the 2nd triode and base stage, and the switch of the 2nd triode becomes out.Owing to being connected with resistance R5 between the collector of the 2nd triode and ground connection, and the input terminal 25a of this collector and control part 30 is connected to, so the voltage of 3.3v can be applied to input terminal 25a.
When the light crested thing that the light-emitting component LED of photosensitive sensor 10a sends interdict completely cannot be delivered to phototransistor time, because the phototriode of photosensitive sensor 10a is for closing, the base potential of the 1st triode of current-voltage conversion loop 40a is that between the base stage of the 0,1st triode and emitter, electric current cannot flow.According to triode switch characteristic, so the electric current between the collector and emitter of the 1st triode cannot flow, the switch of the 1st triode becomes pass, the voltage of the base stage of the 2nd triode is identical with collector voltage, 2nd triode also becomes pass, so the input voltage current potential of input terminal 25a is 0, namely become 0v.
When a part of crested thing blocking of the light that the light-emitting component LED of photosensitive sensor 10a sends, when can only transmit a part of light to phototransistor, although the intermediate value of the output current of this phototransistor between maximum current (without blocking state) and minimum current (interdicting state completely), but the operating principle of the 1st triode according to current-voltage conversion loop 40a, this intermediate value regulation can more than current value the 1st triode for opening, do not reach words the 1st triode of rated current for closing, therefore, 3.3v when the input voltage of the input terminal 25a of control part 30 is more than fixed current value, 0v when not reaching rated current.
Wherein, in the above-described embodiment, although the explanation that rotation process detecting circuit carries out with the supply voltage connecting 3.3v, rotation process detecting circuit can connect the power supply of any voltage value, is equally applicable to the utility model.
In addition, in the above-described embodiment, when rotating detecting circuit convert the temperature of on-board air conditioner, to the explanation that the control of temperature is carried out, the air output adjusting on-board air conditioner is suitable for too.
In addition, in the above-described embodiment, although the explanation undertaken by the rotary switch detecting rotary switch with electric equipment products air-conditioning, TV, wireless volume adjusting and other electric equipment products are equally applicable to the utility model.
Claims (5)
1. a rotation process detecting circuit for electric equipment products, has: photosensitive sensor, detects the rotation process of rotary switch; Input terminal, inputs the output signal of above-mentioned photosensitive sensor; Control part, according to the action of the input signal control apparatus product of this input terminal; It is characterized in that also having:
Current-voltage conversion portion, between above-mentioned photosensitive sensor and above-mentioned input terminal, is after one of them magnitude of voltage of two kinds of different magnitudes of voltage by the current transformation of above-mentioned output signal, inputs to above-mentioned input terminal.
2. the rotation process detecting circuit of electric equipment products according to claim 1, it is characterized in that, above-mentioned current-voltage conversion portion is compound transistor loop, is reach setting more than setting or not, converts different magnitudes of voltage according to the electric current exported by above-mentioned photosensitive sensor.
3. the rotation process detecting circuit of electric equipment products according to claim 2, is characterized in that,
When the current value exported by above-mentioned photosensitive sensor is more than setting, above-mentioned current-voltage conversion portion is transformed to high-voltage value, and when the current value that above-mentioned photosensitive sensor exports does not reach setting, above-mentioned current-voltage conversion portion is transformed to low voltage value.
4. the rotation process detecting circuit of electric equipment products according to claim 2, is characterized in that,
Above-mentioned compound transistor loop is made up of the 1st triode and the 2nd triode, and the base stage of the 1st triode is connected with above-mentioned photosensitive sensor lead-out terminal via resistance, and grounded emitter, is inserted with resistance between this base stage and this emitter; The base stage of the 2nd triode is connected via the collector of resistance with above-mentioned 1st triode, emitter is connected with power supply, be inserted with resistance between this base stage and this emitter, be inserted with resistance between collector and ground connection, this collector is also connected with the input terminal of above-mentioned control part.
5. the rotation process detecting circuit of electric equipment products according to claim 1, is characterized in that,
Above-mentioned control part controls the air output of adjustment on-board air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895409.4U CN205120985U8 (en) | 2015-11-11 | 2015-11-11 | Rotation operations detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895409.4U CN205120985U8 (en) | 2015-11-11 | 2015-11-11 | Rotation operations detecting circuit |
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| Publication Number | Publication Date |
|---|---|
| CN205120985U true CN205120985U (en) | 2016-03-30 |
| CN205120985U8 CN205120985U8 (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520895409.4U Active CN205120985U8 (en) | 2015-11-11 | 2015-11-11 | Rotation operations detecting circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109164870A (en) * | 2018-11-20 | 2019-01-08 | 深圳诺欧博智能科技有限公司 | A kind of volume adjustment device |
| CN110037529A (en) * | 2018-01-17 | 2019-07-23 | 深圳市晨北科技有限公司 | A kind of light sensation temperature control simmers machine |
-
2015
- 2015-11-11 CN CN201520895409.4U patent/CN205120985U8/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110037529A (en) * | 2018-01-17 | 2019-07-23 | 深圳市晨北科技有限公司 | A kind of light sensation temperature control simmers machine |
| CN109164870A (en) * | 2018-11-20 | 2019-01-08 | 深圳诺欧博智能科技有限公司 | A kind of volume adjustment device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN205120985U8 (en) | 2016-06-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CGPU | Change to patent or to utility model | ||
| CU01 | Correction of utility model |
Correction item: Patentee Correct: ALPINE ELECTRONICS, Inc. False: ALPINE ELECTRONICS, INC. Number: 13 Page: The title page Volume: 32 |
|
| CU03 | Publication of corrected utility model |
Correction item: Patentee Correct: ALPINE ELECTRONICS, Inc. False: ALPINE ELECTRONICS, INC. Number: 13 Volume: 32 |
|
| ERR | Gazette correction |