CN103186978B - Control the circuit structure of Infrared Remote-Control Sending - Google Patents
Control the circuit structure of Infrared Remote-Control Sending Download PDFInfo
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- CN103186978B CN103186978B CN201110457851.5A CN201110457851A CN103186978B CN 103186978 B CN103186978 B CN 103186978B CN 201110457851 A CN201110457851 A CN 201110457851A CN 103186978 B CN103186978 B CN 103186978B
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Abstract
The present invention relates to a kind of circuit structure controlling Infrared Remote-Control Sending, comprising carrier wave generation module, carrier wave low and high level length is controlled according to preset value, waveform combination module, with carrier wave generation model calling, for combined carriers and function code, and select only transmitting carrier wave or only emission function code according to user operation, driver module, with waveform combination model calling, for selecting type of drive and driving force.Adopt the circuit structure of the control Infrared Remote-Control Sending of this kind of structure, save system overhead, be convenient to test and debugging in large production, original circuit board continues to use external type of drive, and new circuit board uses built-in type of drive; Driving force can be selected during built-in driving, thus it is more flexible, driving force can be selected according to actual needs simultaneously, and select different driving ability to reduce power consumption according to the distance of transmitting range, extend battery life, significantly reduce complete machine cost, stable and reliable working performance, the scope of application is comparatively extensive.
Description
Technical field
The present invention relates to infrared remote control field, particularly Infrared Remote-Control Sending control technology field, specifically refer to a kind of circuit structure controlling Infrared Remote-Control Sending.
Background technology
Infrared Ray Remote Control Technology obtains fast development in recent years, especially in field of household appliances as colour TV, DVD, air-conditioning etc., be also used widely at other electronic applications.Along with the widespread use of telepilot in people's life, higher requirement be there has also been to the development time, complete machine cost, power consumption index etc. of remote control producer.
In prior art, traditional Infrared Remote-Control Sending circuit, generally adopts external triode to drive infrarede emitting diode.The purchase cost of triode and current-limiting resistance is difficult to avoid.
The current Infrared Remote-Control Sending circuit generally used, its carrier wave is produced by system clock frequency division and solidifies, and cannot revise its length and dutycycle flexibly.When developer needs the situation different from presetting carrier wave, namely whole remote controlled transmitting circuit cannot use, and often need the chip changing another kind of model, cannot tackle fast, manufacturer also must get ready the goods again, takies storage space, affects production cost.
Separately have part to adopt the Infrared Remote-Control Sending circuit of MCU master control, carrier wave can be produced by MCU, and carrier wave producing method is identical with the producing method of numeric data code.But produce carrier wave completely by Program Generating, occupy the processing power that MCU is limited, requirements at the higher level are proposed to MCU, be unfavorable for the control of cost.
Summary of the invention
The object of the invention is to overcome above-mentioned shortcoming of the prior art, provide a kind of and can be applicable to multiple carrier type, greatly reduce the circuit structure that emitting structural reduces complete machine cost to the requirement of system resource, obviously, stable and reliable working performance, the scope of application control Infrared Remote-Control Sending comparatively widely.
In order to realize above-mentioned object, the circuit structure of control Infrared Remote-Control Sending of the present invention has following formation:
The circuit structure of this control Infrared Remote-Control Sending, its principal feature is, described circuit structure comprises:
Carrier wave generation module, controls carrier wave low and high level length according to preset value;
Waveform combination module, is connected with described carrier wave generation module, for combined carriers and function code, and selects only transmitting carrier wave or only emission function code according to user operation;
Driver module, is connected with described waveform combination module, for selecting type of drive and driving force.
Carrier wave generation module in the circuit structure of this control Infrared Remote-Control Sending comprises:
Register, preserve the low and high level length data information of default carrier wave;
Counter, is connected with described register, for controlling the number of carrier wave low and high level clock according to described preset value.
Register in the circuit structure of this control Infrared Remote-Control Sending comprises a high level clock number register and a low level clock number register.
Waveform combination module in the circuit structure of this control Infrared Remote-Control Sending comprises shaping stage unit and combinational circuit unit, and described shaping stage unit is connected with combinational circuit unit.
Shaping stage unit in the circuit structure of this control Infrared Remote-Control Sending comprises a d type flip flop, the input end of clock of described d type flip flop is connected with the output terminal of described carrier wave generation module, described function code accesses the data input pin of this d type flip flop, and the data output end of described d type flip flop is connected with described combinational circuit unit.
Combinational circuit unit in the circuit structure of this control Infrared Remote-Control Sending comprise carrier wave output enable register, function code output enable register, first or door, second or door and with door, described carrier wave output enable register is connected with the input end of described first or door respectively with the output terminal of carrier wave generation module, described function code output enable register is connected with the input end of described second or door respectively with the data output end of described d type flip flop, described first or door be connected with door with described with the output terminal of second or door.
Driver module in the circuit structure of this control Infrared Remote-Control Sending comprises driving selects logical block, external driving logical block and built-in driving logical block, and described driving selects logical block to be all connected with built-in driving logical block with described external driving logical block.
Driving in the circuit structure of this control Infrared Remote-Control Sending is selected logical block to comprise and is driven register and combinational logic circuit, described driving register is connected with combinational logic circuit, and described combinational logic circuit produces the first output signal X1, the second output signal X2 and the 3rd output signal X3.
External driving logical block in the circuit structure of this control Infrared Remote-Control Sending comprises phase inverter, Sheffer stroke gate and rejection gate, the output terminal of described driving register is connected with described Sheffer stroke gate by described phase inverter, and the output terminal of described waveform combination module is connected with described rejection gate.
Built-in driving logical block in the circuit structure of this control Infrared Remote-Control Sending comprises a NMOS field effect transistor N1, 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3, a described NMOS field effect transistor N1, the source grounding of the 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3, and the 3rd described output signal X3 exports a NMOS field effect transistor N1 respectively to, the grid of the 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3, the second described output signal X2 exports the grid of the 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3 respectively to, the first described output signal X1 exports the grid of the 3rd NMOS field effect transistor N3 to.
Have employed the circuit structure of the control Infrared Remote-Control Sending of this invention, owing to wherein presetting carrier wave low and high level length by register, and produce circuit function code by this circuit structure external logic, driver module is sent in waveform combination module with after carrier combination, and determine type of drive and concrete driving force by the preset value of register, thus only need to preset once before signaling first, do not need in subsequent process to expend system resource management carrier wave again, save system overhead; Can set flexibly and select simultaneously to launch carrier wave, emission function code or combined transmit, thus be convenient to test and debugging in large production; And built-in driving or external driving can be selected, make original circuit board continue to use external type of drive, the circuit board of new production can use built-in type of drive; Driving force can be selected during built-in driving, make solution development more flexible, driving force can be selected according to actual needs simultaneously, need can select larger driving force during transmitting range far away, if transmitting range is less demanding, less driving force can be selected to reduce power consumption, extend battery life, significantly reduce complete machine cost, stable and reliable working performance, the scope of application is comparatively extensive.
Accompanying drawing explanation
Fig. 1 is the circuit structure overall architecture schematic diagram of control Infrared Remote-Control Sending of the present invention.
Fig. 2 is the carrier wave generation modular circuit schematic diagram in the circuit structure of control Infrared Remote-Control Sending of the present invention.
Fig. 3 is the waveform combination modular circuit schematic diagram in the circuit structure of control Infrared Remote-Control Sending of the present invention.
Fig. 4 is the driver module circuit diagram in the circuit structure of control Infrared Remote-Control Sending of the present invention.
Embodiment
In order to more clearly understand technology contents of the present invention, describe in detail especially exemplified by following examples.
Refer to shown in Fig. 1 to Fig. 4, the circuit structure of this control Infrared Remote-Control Sending, wherein, described circuit structure comprises:
(1) carrier wave generation module, controls carrier wave low and high level length according to preset value; Comprising:
● register, preserve the low and high level length data information of default carrier wave; This register comprises a high level clock number register and a low level clock number register;
● counter, is connected with described register, for controlling the number of carrier wave low and high level clock according to described preset value;
(2) waveform combination module, is connected with described carrier wave generation module, for combined carriers and function code, and selects only transmitting carrier wave or only emission function code according to user operation; This waveform combination module comprises shaping stage unit and combinational circuit unit, described shaping stage unit is connected with combinational circuit unit, described shaping stage unit comprises a d type flip flop, the input end of clock of described d type flip flop is connected with the output terminal of described carrier wave generation module, described function code accesses the data input pin of this d type flip flop, and the data output end of described d type flip flop is connected with described combinational circuit unit; Described combinational circuit unit comprise carrier wave output enable register, function code output enable register, first or door, second or door and with door, described carrier wave output enable register is connected with the input end of described first or door respectively with the output terminal of carrier wave generation module, described function code output enable register is connected with the input end of described second or door respectively with the data output end of described d type flip flop, described first or door be connected with door with described with the output terminal of second or door;
(3) driver module, be connected with described waveform combination module, for selecting type of drive and driving force, described driver module comprises driving selects logical block, external driving logical block and built-in driving logical block, and described driving selects logical block to be all connected with built-in driving logical block with described external driving logical block.
Wherein, described driving is selected logical block to comprise and is driven register and combinational logic circuit, described driving register is connected with combinational logic circuit, and described combinational logic circuit produces the first output signal X1, the second output signal X2 and the 3rd output signal X3.
Described external driving logical block comprises phase inverter, Sheffer stroke gate and rejection gate, and the output terminal of described driving register is connected with described Sheffer stroke gate by described phase inverter, and the output terminal of described waveform combination module is connected with described rejection gate.
Described built-in driving logical block comprises a NMOS field effect transistor N1, 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3, a described NMOS field effect transistor N1, the source grounding of the 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3, and the 3rd described output signal X3 exports a NMOS field effect transistor N1 respectively to, the grid of the 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3, the second described output signal X2 exports the grid of the 2nd NMOS field effect transistor N2 and the 3rd NMOS field effect transistor N3 respectively to, the first described output signal X1 exports the grid of the 3rd NMOS field effect transistor N3 to.
In the middle of reality uses, the basic thought of technical scheme of the present invention is as follows:
(1) comprise carrier wave generation module, wherein comprise register with default carrier wave low and high level length, comprise a cluster counters, for according to preset value counting carrier waves low and high level clock number.
The principal feature of this carrier transmit module is as follows:
A () provides clock by this structural outer;
(b) built-in 2 groups of registers, preserve respectively the low and high level length data of default carrier wave;
C () comprises a cluster counters, for according to preset value counting carrier waves low and high level clock number.
(2) comprise waveform combination module, for combined carriers and function code, and can select as required only to launch carrier wave or function code.The principal feature of this waveform combination module is as follows:
A carrier wave and function code are combined as transmitted waveform by ();
B () can be selected only to launch carrier wave or function code as required.
(3) comprise driver module, comprise register and drive or built-in driving with the external triode of choice for use, use during built-in driving and driving force can be selected to balance the demand of transmitting range and power consumption.The principal feature of this driver module is as follows:
A () comprises external drive pattern and built-in drive pattern;
B () built-in drive pattern can select output current ability.
Refer to shown in Fig. 2, described carrier wave generation module 1 comprises register 4 sum counter 5, is provided the fundamental clock of circuit by external clock reference, and described register 4 is divided into two parts, and storing carrier wave is respectively the clock number of high level and low level clock number.Sent into the data of high and low level clock number by Infrared Remote-Control Sending structural outer before module work.When starting signaling, the counter 5 in module is first from register read high level clock number, and control module launches high level and the fundamental clock provided with external clock reference carries out subtracting counting for benchmark.When counting down to 0, counter produces spill over control module and changes transmitting low level into, simultaneously from register read low level clock number, the fundamental clock provided with external clock reference counts for benchmark carries out subtracting and control module continues to launch low level until be counted as 0.Module continues to repeat above process periodically to produce carrier wave.
Refer to shown in Fig. 3, described waveform combination module 2 comprises shaping stage 6 and combinational circuit 7 again.Described shaping stage 6 comprises a d type flip flop, and it is clock with carrier wave, is that data input with function code, and data output end is the function code signal of several complete carrier cycle length.Combinational circuit 7 comprise 2 or, 1 with door and 2 1bit registers.The control signal EN1 to waveform combination, EN2 is preserved in register.When EN1 is high level, prohibiting function code exports; When EN2 is high level, forbid that carrier wave exports; When EN1 and EN2 is low level, function code and carrier wave phase and rear output.
Refer to shown in Fig. 4, described driver module 3 comprises driving selects logic 8, external driving logic 9 and built-in driving logical one 0 again.Drive and select logic 8 to comprise 2bits register, when its value is 00, producing the external driving of OUT EN signal behavior, take inverter structure as output stage; When its value is 01, select built-in driving and jointly produce X1 with combined waveform, drive a NMOS field effect transistor N1, its driving force is 1/3 of maximum drive current; When its value is 10, select built-in driving and jointly produce X2 with combined waveform, drive a NMOS field effect transistor N1, the 2nd NMOS field effect transistor N2, its driving force is 2/3 of maximum drive current; When its value is 11, select built-in driving and jointly produce X3 with combined waveform, drive a NMOS field effect transistor N1, the 2nd NMOS field effect transistor N2, the 3rd NMOS field effect transistor N3, its driving force is maximum drive current.
Have employed the circuit structure of above-mentioned control Infrared Remote-Control Sending, owing to wherein presetting carrier wave low and high level length by register, and produce circuit function code by this circuit structure external logic, driver module is sent in waveform combination module with after carrier combination, and determine type of drive and concrete driving force by the preset value of register, thus only need to preset once before signaling first, do not need in subsequent process to expend system resource management carrier wave again, save system overhead; Can set flexibly and select simultaneously to launch carrier wave, emission function code or combined transmit, thus be convenient to test and debugging in large production; And built-in driving or external driving can be selected, make original circuit board continue to use external type of drive, the circuit board of new production can use built-in type of drive; Driving force can be selected during built-in driving, make solution development more flexible, driving force can be selected according to actual needs simultaneously, need can select larger driving force during transmitting range far away, if transmitting range is less demanding, less driving force can be selected to reduce power consumption, extend battery life, significantly reduce complete machine cost, stable and reliable working performance, the scope of application is comparatively extensive.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, instructions and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (5)
1. control a circuit structure for Infrared Remote-Control Sending, it is characterized in that, described circuit structure comprises:
Carrier wave generation module, control carrier wave low and high level length according to preset value, and be connected with external clock reference, wherein, described carrier wave generation module comprises:
Register, preserve the low and high level length data information of default carrier wave;
Counter, is connected with described register, for controlling the number of carrier wave low and high level clock according to described preset value;
Waveform combination module, be connected with described carrier wave generation module, for combined carriers and function code, and select only transmitting carrier wave or only emission function code according to user operation, wherein, described waveform combination module comprises shaping stage unit and combinational circuit unit, and described shaping stage unit is connected with combinational circuit unit
Described shaping stage unit comprises a d type flip flop, the input end of clock of described d type flip flop is connected with the output terminal of described carrier wave generation module, described function code accesses the data input pin of this d type flip flop, and the data output end of described d type flip flop is connected with described combinational circuit unit;
Described combinational circuit unit comprise carrier wave output enable register, function code output enable register, first or door, second or door and with door, described carrier wave output enable register is connected with the input end of described first or door respectively with the output terminal of carrier wave generation module, described function code output enable register is connected with the input end of described second or door respectively with the data output end of described d type flip flop, described first or door be connected with door with described with the output terminal of second or door;
Driver module, be connected with described waveform combination module, for selecting type of drive and driving force, wherein, described driver module comprises driving selects logical block, external driving logical block and built-in driving logical block, and described driving selects logical block to be all connected with built-in driving logical block with described external driving logical block.
2. the circuit structure of control Infrared Remote-Control Sending according to claim 1, is characterized in that, described register comprises a high level clock number register and a low level clock number register.
3. the circuit structure of control Infrared Remote-Control Sending according to claim 1, it is characterized in that, described driving is selected logical block to comprise and is driven register and combinational logic circuit, described driving register is connected with combinational logic circuit, and described combinational logic circuit produces the first output signal (X1), the second output signal (X2) and the 3rd output signal (X3).
4. the circuit structure of control Infrared Remote-Control Sending according to claim 3, it is characterized in that, described external driving logical block comprises phase inverter, Sheffer stroke gate and rejection gate, the output terminal of described driving register is connected with described Sheffer stroke gate by described phase inverter, and the output terminal of described waveform combination module is connected with described rejection gate.
5. the circuit structure of control Infrared Remote-Control Sending according to claim 3, it is characterized in that, described built-in driving logical block comprises a NMOS field effect transistor (N1), 2nd NMOS field effect transistor (N2) and the 3rd NMOS field effect transistor (N3), a described NMOS field effect transistor (N1), the source grounding of the 2nd NMOS field effect transistor (N2) and the 3rd NMOS field effect transistor (N3), and the 3rd described output signal (X3) exports a NMOS field effect transistor (N1) respectively to, the grid of the 2nd NMOS field effect transistor (N2) and the 3rd NMOS field effect transistor (N3), the second described output signal (X2) exports the grid of the 2nd NMOS field effect transistor (N2) and the 3rd NMOS field effect transistor (N3) respectively to, the first described output signal (X1) exports the grid of the 3rd NMOS field effect transistor (N3) to.
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| CN201110457851.5A CN103186978B (en) | 2011-12-30 | 2011-12-30 | Control the circuit structure of Infrared Remote-Control Sending |
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| CN105448076B (en) * | 2014-05-26 | 2019-03-19 | 无锡华润矽科微电子有限公司 | Realize the remote control driving circuit structure and remote controlled transmitting circuit structure of automatic adjusument |
| CN109859454B (en) * | 2017-11-30 | 2020-03-10 | 珠海格力电器股份有限公司 | Infrared code sending circuit, chip, remote control equipment and air conditioner based on infrared protocol |
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| MY104831A (en) * | 1989-01-27 | 1994-06-30 | Sharp Kk | Memory remote control device. |
| CN1822067A (en) * | 2006-01-13 | 2006-08-23 | 深圳创维－Rgb电子有限公司 | Programmable infrared remote control method and its circuit |
| CN200997182Y (en) * | 2006-12-06 | 2007-12-26 | 深圳创维－Rgb电子有限公司 | TV-set remote controller against string interference |
| CN201142126Y (en) * | 2007-11-27 | 2008-10-29 | 杭州鸿雁电器有限公司 | Infrared remote control signal wireless repeater system |
| CN101751772B (en) * | 2010-02-01 | 2012-01-04 | 青岛海信电器股份有限公司 | Infrared remote control system for controlling household appliance and remote control method thereof |
| CN102063785B (en) * | 2010-11-12 | 2013-03-13 | 四川长虹电器股份有限公司 | Method for automatically emitting infrared remote control signals and system thereof |
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