CN201194075Y - Two-way control circuit applied to load and switch - Google Patents
Two-way control circuit applied to load and switch Download PDFInfo
- Publication number
- CN201194075Y CN201194075Y CNU2008200935911U CN200820093591U CN201194075Y CN 201194075 Y CN201194075 Y CN 201194075Y CN U2008200935911 U CNU2008200935911 U CN U2008200935911U CN 200820093591 U CN200820093591 U CN 200820093591U CN 201194075 Y CN201194075 Y CN 201194075Y
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- load
- switch
- control circuit
- circuit
- switches
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Abstract
The utility model relates to a control circuit providing a double line control circuit for loads and switches. The double line control circuit containing a controller and the connected loads and switches are characterized in that the loads and switches are parallel connection to form a shunt circuit, loads and switches of each branch circuit in the shunt circuit respectively serially connect to a diode; two ends of the shunt circuit respectively connect to the controller through a connecting line. According to the utility model, during the control process of loads and switches by the control circuit, the difference is that parallel connection mode is used to the loads and switches and only two connecting lines are used too comparing to the prior art, thereby realizing good spatial allocation effect at the same time of applying control to loads and switches.
Description
Technical field
The utility model relates to control circuit, more particularly, relates to a kind of two-wire control circuit that is applied to load and switch.
Background technology
In at present a large amount of electronic equipments, if load and switch are connected on the control panel by a circuit, can only control one in load and the switch a moment, can't control simultaneously; As controlling simultaneously, need separately separate connection.
In the prior art, the testing circuit of the driving circuit of load and switch independently uses and separately control.Load separates with switch, and links to each other with control panel respectively, but the control signal of the control circuit detector switch in the control panel, and output signal is come control load.But this mode needs many connecting lines, under the normal condition, needs 4 connecting lines, is 3 connecting lines at least, can not cause too big influence for the unrestricted product in space, but when if the space is restricted, then needs to reduce connecting line.
Hence one can see that, when prior art is controlled when realizing load and switch, needs to use many connecting lines, relatively takes up room.Therefore need a kind of new control circuit, can reduce connecting line, thereby simplify circuit structure, improve spatial configuration.
The utility model content
The purpose of this utility model is to provide a kind of two-wire control circuit that is applied to load and switch, and the control circuit that is intended to solve prior art need use many connecting lines, causes the occupied problem in space.
In order to realize the utility model purpose, the described two-wire control circuit that is applied to load and switch, comprise controller, and coupled load and switch, described load and switch in parallel connect and compose a parallel circuit, and in each branch road of described parallel circuit load and the switch diode of connecting respectively;
The two ends of described parallel circuit link to each other with controller by a connecting line respectively.
Preferably, described load is motor, bulb or heater strip.
Preferably, described diode is a schottky diode.
Preferably, the two ends of described parallel circuit link to each other with a level control circuit by a connecting line respectively, are connected to input port, the output port of controller again by level control circuit.
Preferably, in the input port that described level control circuit connects, the output port, input port is set to " low-voltage is to high-tension rising edge " effectively, is used to control the height upset of described output port voltage.
As from the foregoing, the utility model is in the process of load and switch being controlled by control circuit, difference with the prior art is, load and switch adopt the mode that is connected in parallel, and only use two connecting lines, therefore when realizing load and switch controlled, reached the better space allocative effect.
Description of drawings
Fig. 1 is the structural drawing that is applied to the two-wire control circuit of load and switch in the utility model;
Fig. 2 is the compound detection control timing figure of controller shown in Figure 1 among the embodiment of the present utility model.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the utility model, load and switch adopt the mode that is connected in parallel, load and the switch diode of connecting respectively in each branch road of parallel circuit, and the two ends of parallel circuit link to each other with controller by a connecting line respectively, so have only used two connecting lines between the parallel circuit of load, switch and controller.The utility model has also reached the better space allocative effect when realizing load and switch controlled.
Fig. 1 shows the structure of the two-wire control circuit that is applied to load and switch in the utility model, comprises controller, the parallel circuit that load and switch constitute, and the level control circuit that links to each other with this parallel circuit.Wherein:
(1) controller typically can be microcontroller (Micro Controller Unit, MCU), its external power supply VCC, and ground connection.This controller has an input port P1.1 and output port P1.2, and wherein: input port P1.1 is set to " low-voltage is to high-tension rising edge " effectively, is used for the height upset of control output end mouth P1.2 voltage; Output port P1.2 output HIGH voltage still is that low-voltage is controlled by input port P1.1, and loaded work piece during high level shuts down during low level.
The utility model is exactly the train of impulses by control output end mouth P1.2 output HIGH voltage, utilizes the low-voltage gap of pulse, realizes the detection of switch; During output port P1.2 low level, if detecting input port P1.1 is high level, then this moment, switch was pressed.In fact the high level of output port P1.2 output has the train of impulses of certain dutycycle, and the high-low level ratio is 8:1 or 9:1, and during motor operations, the pulses low district of output is the key scan detection zone of P1.1 mouth.When controller detects continuous three low levels, judge that button is effective, output port P1.2 upset: if be originally high level, overturning is low level, if be originally low level, then upset is high level.As shown in Figure 2, be the sequential chart that concrete compound detection is controlled.Wherein A represents the district that quits work, and B is the workspace; C representation switch SW1 does not press, and P1.1 is a low level; On behalf of SW1, D press, and P1.1 is a high level; The E representative detects key zone, should avoid P1.2 to detect immediately in this district as far as possible.
(2) in the parallel circuit that load and switch constitute, load can be motor, perhaps bulb, heater strip etc.In the branch road at this load place, load is connected with a diode, and this diode can be a 1N4007 series, also can be schottky diode.In one embodiment, load is a vibrating motor, and it is connected with a diode, and purpose is the normal rotation direction that guarantees this vibrating motor, prevents simultaneously under the off working state, forms the loop by " VCC-R2-motor-R3 " among the figure.
In the branch road at switch place, this switch is also connected with a diode, like this, when switch presses down, can not impact the duty of motor.
The two ends of this parallel circuit link to each other with input port P1.1, the output port P1.2 of controller respectively.These two connecting lines can be realized multi-functional, both can export control load, and control signal that again can detector switch makes load and switch in parallel use.
(3) linking to each other with the parallel circuit of this load and switch formation, is a level control circuit, mainly is in order to cooperate the control of controller to level.In this level control circuit, can select suitable triode TR1 and TR2 according to the working current of load, if the working current of load can select 8550 less than 400MA,, should select the positive-negative-positive high power valve if greater than 400MA.In addition, in this circuit, capacitor C 1 is mainly used in anti-interference, and 2 of capacitor C are used for power filter.
In addition, switch can be set to multiple combination function according to the function of product, does not do detailed description herein.
A concrete application scenarios of the present utility model is the electric toothbrush of the automatic sound-recording function of a band.This toothbrush is divided into two sections and patches connection: recording control panel and loudspeaker are at lower semisection, and functional switch and vibrating motor are at upper semisection.Because of inner space restriction, also, use two connecting lines to realize above-mentioned functions in order to connect or the convenience of dismounting.The control effect is: click functional switch, motor vibration; Click switch again, motor and music are worked simultaneously; Press switch for the third time, music work, motor stops; Press switch, all quit work for the 4th time.Restrain thus, the spatial configuration requirement had been satisfied in control when this electric toothbrush had only used two connecting lines just to realize load and switch.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. two-wire control circuit that is applied to load and switch, comprise controller, and coupled load and switch, it is characterized in that, described load and switch in parallel connect and compose a parallel circuit, and in each branch road of described parallel circuit load and the switch diode of connecting respectively;
The two ends of described parallel circuit link to each other with controller by a connecting line respectively.
2. the two-wire control circuit that is applied to load and switch according to claim 1 is characterized in that described load is motor, bulb or heater strip.
3. the two-wire control circuit that is applied to load and switch according to claim 1 is characterized in that described diode is a schottky diode.
4. the two-wire control circuit that is applied to load and switch according to claim 1, it is characterized in that, the two ends of described parallel circuit link to each other with a level control circuit by a connecting line respectively, are connected to input port, the output port of controller again by level control circuit.
5. the two-wire control circuit that is applied to load and switch according to claim 3, it is characterized in that, in the input port that described level control circuit connects, the output port, input port is set to " low-voltage is to high-tension rising edge " effectively, is used to control the height upset of described output port voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935911U CN201194075Y (en) | 2008-04-25 | 2008-04-25 | Two-way control circuit applied to load and switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200935911U CN201194075Y (en) | 2008-04-25 | 2008-04-25 | Two-way control circuit applied to load and switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201194075Y true CN201194075Y (en) | 2009-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200935911U Expired - Fee Related CN201194075Y (en) | 2008-04-25 | 2008-04-25 | Two-way control circuit applied to load and switch |
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| CN (1) | CN201194075Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877355A (en) * | 2017-12-19 | 2018-04-06 | 浙江大学台州研究院 | A kind of highly reliable grinder closes down control device and its method |
-
2008
- 2008-04-25 CN CNU2008200935911U patent/CN201194075Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107877355A (en) * | 2017-12-19 | 2018-04-06 | 浙江大学台州研究院 | A kind of highly reliable grinder closes down control device and its method |
| CN107877355B (en) * | 2017-12-19 | 2023-08-11 | 浙江大学台州研究院 | High-reliability grinding machine shutdown control device and method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090211 Termination date: 20170425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |