CN217932921U - Standby circuit, remote control device and electronic equipment - Google Patents

Abstract

The utility model discloses a standby circuit, remote control unit and electronic equipment, standby circuit includes: the key array module, the key detection module, the control module and the load module comprise a plurality of power utilization components; the key array module is electrically connected with the key detection module and is used for outputting a key signal to the key detection module; the key detection module is respectively electrically connected with the control module and the load module and is used for outputting a state signal to the control module according to a key signal and outputting a key signal to the load module; the control module is electrically connected with the load module and is used for closing the load module in a standby state and opening the load module according to the state signal in the standby state; the load module is used for converting the key signal into a wireless signal and outputting the wireless signal outwards. Through the arrangement, a plurality of electric components in the load module are in the off state in the standby state, and the power consumption in the standby state is greatly reduced.

Description

Standby circuit, remote control device and electronic equipment

Technical Field

The utility model relates to an electronic circuit technical field especially relates to a standby circuit, remote control unit and electronic equipment.

Background

Some household appliances controlled by remote control exist in the market, and at present, a remote control device of the household appliance cannot completely turn off unnecessary power utilization components in a standby state, so that the standby power consumption is high. For example, in the existing remote control device, the low frequency oscillator is used to scan and detect the keys during the standby process, and since the low frequency oscillator is always operated, the standby power consumption is about 5uA, and the power consumption of the remote control device in the standby state cannot be reduced continuously.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: a standby circuit, a remote control device and an electronic apparatus are provided to solve the problem that the standby power consumption of the remote control device cannot be continuously reduced.

In order to solve the technical problem, the utility model discloses a technical scheme be:

a standby circuit, comprising: the key array module, the key detection module, the control module and the load module comprise a plurality of power utilization components;

the key array module is electrically connected with the key detection module and is used for outputting a key signal to the key detection module;

the key detection module is respectively electrically connected with the control module and the load module, and is used for outputting a state signal to the control module according to the key signal and outputting the key signal to the load module;

the control module is electrically connected with the load module and is used for closing the load module in a standby state and opening the load module according to the state signal in the standby state;

the load module is used for converting the key signal into a wireless signal and outputting the wireless signal outwards.

Further, the key array module includes: the keyboard comprises M lines of row lines and N lines of column lines, wherein each intersection point of the row lines and the column lines is provided with a key to form a key array of M rows and N columns, wherein M and N are positive integers;

one end of each key is connected with the corresponding row line, the other end of each key is connected with the corresponding column line, and the row line and the column line are electrically connected with the key detection module.

Further, the key detection module includes: the device comprises M scanning ports, N detection ports, a pull-up unit and a key detection unit;

the scanning ports are connected with the row lines in a one-to-one corresponding mode, and the detection ports are connected with the column lines in a one-to-one corresponding mode;

the key detection unit is respectively connected with the load module, the pull-up unit, the scanning port and the detection port, and is used for acquiring the key signal through the scanning port and the detection port, outputting the state signal to the load module according to the key signal, outputting a pull-up control signal to the pull-up unit in a standby state and setting the scanning port to be at a low level;

the pull-up unit is respectively connected with the detection ports and the key detection unit, and is used for pulling up the N detection ports to high level according to the pull-up control signal.

Further, the pull-up unit includes: pull-up switches and pull-up resistors which are connected with the detection ports in a one-to-one correspondence manner;

the input end of the pull-up switch is connected with an input power supply, the output end of the pull-up switch is connected with one end of the pull-up resistor, and the control end of the pull-up switch is connected with the key detection unit;

the other end of the pull-up resistor is connected with the detection port.

Further, the load module includes: the device comprises a timing unit, a reference unit, a coding unit and a transmitting unit;

the timing unit is electrically connected with the coding unit and is used for outputting a timing signal to the coding unit according to the key signal;

the reference unit is electrically connected with the timing unit and is used for providing a time reference for the timing unit;

the coding unit is electrically connected with the transmitting unit and is used for coding according to the key signal and the timing signal and outputting a coding signal to the transmitting unit;

the transmitting unit is used for converting the coded signal into the wireless signal and transmitting the wireless signal outwards.

Further, the reference unit comprises a low-frequency oscillator, and the low-frequency oscillator is connected with the timing unit.

Further, the reference unit further comprises a high-frequency oscillator, and the high-frequency oscillator is connected with the low-frequency oscillator.

Furthermore, the key detection module is also used for comparing the duration time of the key signal with a first preset time value in a standby state,

when the duration time of the key signal is less than the first preset time value, the key detection module outputs a first state signal, and the control module maintains the load module to be closed according to the first state signal;

when the duration time of the key signal is greater than or equal to the first preset time value, the key detection module outputs a second state signal, and the control module starts the load module according to the second state signal.

A remote control device comprising a standby circuit as claimed in any preceding claim.

An electronic device comprising a remote control apparatus as described above.

The beneficial effects of the utility model reside in that: the key array module receives the key signal, the key detection module outputs a state signal to the control module according to the key signal, and the control module closes the load module in a standby state and opens the load module when receiving the state signal. Through this kind of setting for a plurality of power consumption components and parts in the load module are in the off-state under standby state, with the reduction consumption, and can in time awaken power consumption components and parts and get into operating condition when the button triggers, convert key signal into wireless signal, with remote control external equipment.

Drawings

Fig. 1 is a schematic block diagram of a standby circuit according to an embodiment of the present invention;

fig. 2 is another schematic block diagram of a standby circuit according to an embodiment of the present invention;

fig. 3 is a schematic circuit diagram of a key array module according to an embodiment of the present invention.

Description of reference numerals:

100. a key array module; 200. a key detection module; 210. a pull-up unit; 220. a key detection unit; 300. a control module; 400. a load module; 410. a timing unit; 420. a reference unit; 421. a low frequency oscillator; 422. a high-frequency oscillator; 430. an encoding unit; 440. and a transmitting unit.

Detailed Description

In order to explain the technical contents, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.

Examples

Referring to fig. 1 to fig. 3, an embodiment of the present invention is:

a standby circuit is applied to remote control devices of electronic equipment, such as televisions, television remote controllers, air conditioners, air conditioner remote controllers and the like.

Referring to fig. 1, the standby circuit includes: the key array module 100, the key detection module 200, the control module 300 and the load module 400 comprising a plurality of power consumption components; the key array module 100 is electrically connected to the key detection module 200, and the key array module 100 is configured to output a key signal to the key detection module 200; the key detection module 200 is electrically connected to the control module 300 and the load module 400, respectively, and the key detection module 200 is configured to output a status signal to the control module 300 according to the key signal and output the key signal to the load module 400; the control module 300 is electrically connected to the load module 400, the control module 300 is configured to turn off the load module 400 in a standby state, and turn on the load module 400 according to the status signal in the standby state, and the load module 400 is configured to convert the key signal into a wireless signal and output the wireless signal.

The working principle of the standby circuit in this embodiment is as follows: the control module 300 turns off all the electric components in the load module 400, such as the low frequency oscillator 421, in the standby state, when the key array module 100 outputs a key signal, the key detection module 200 outputs a state signal to the control module 300 according to the key signal, so that the control module 300 senses the state signal to turn on the load module 400, and all the electric components in the load module 400 are started and enter a working state, and the load module 400 acquires the key signal and converts the key signal into a wireless signal to be output outwards, so as to remotely control external devices.

It can be understood that, by the above configuration, all the electric components in the load module 400 are turned off in the standby state, so that the standby current in the standby circuit is reduced to 0.7 μ a, which is reduced by 85% compared with the standby current of 5 μ a of the current remote control device, the standby power consumption of the remote control device is greatly reduced, and the electric components can be awakened in time and enter the operating state when the key is triggered.

Referring to fig. 3, in detail, the key array module 100 includes: the keyboard comprises M lines of row lines and N lines of column lines, wherein each intersection point of the row lines and the column lines is provided with a key to form a key array of M rows and N columns, wherein M and N are positive integers; one end of each key is connected to the corresponding row line, the other end of each key is connected to the corresponding column line, and the row line and the column line are both electrically connected to the key detection module 200.

Referring to fig. 2, the key detection module 200 includes: m scanning ports A1-AM, N detection ports B1-BN, a pull-up unit 210 and a key detection unit 220; the scanning ports A1-AM are connected with the row lines in a one-to-one corresponding mode, and the detection ports B1-BN are connected with the column lines in a one-to-one corresponding mode; the key detection unit 220 is connected to the load module 400, the pull-up unit 210, the scan ports A1 to AM, and the detection ports B1 to BN, respectively, and the key detection unit 220 is configured to obtain the key signals through the scan ports A1 to AM and the detection ports B1 to BN, output the state signals to the load module 400 according to the key signals, output pull-up control signals to the pull-up unit 210 in a standby state, and set the scan ports A1 to AM to a low level; the pull-up unit 210 is connected to the detection ports B1 to BN and the key detection unit 220, respectively, and the pull-up unit 210 is configured to pull up the N detection ports B1 to BN to a high level according to the pull-up control signal. Exemplarily, the embodiment represents the key in the xth column and the yth row in the key array by Bx-Ay, and x ∈ [1, n ]; y belongs to [1, M ].

It can be understood that, in this embodiment, the key detection unit 220 sets the detection ports B1 to BN to be high level and sets the scanning ports A1 to AM to be low level through the pull-up unit 210 in the standby state, when any key in the key array is triggered by closing, the key detection unit 220 determines key triggering by recognizing level change of the corresponding detection port, acquires a corresponding key signal and outputs a state signal to the control module 300, and the control module 300 opens the electrical component in the load module 400 according to the state signal, so as to enable the electrical component to enter the working state.

Specifically, the pull-up unit 210 includes: pull-up switches S1 to SN and pull-up resistors R1 to RN which are connected with the detection ports B1 to BN in a one-to-one correspondence manner; the input ends of the pull-up switches S1 to SN are connected with an input power supply, the output ends of the pull-up switches S1 to SN are connected with one ends of the pull-up resistors R1 to RN, and the control ends of the pull-up switches S1 to SN are connected with the key detection unit 220; the other ends of the pull-up resistors R1-RN are connected with the detection ports B1-BN.

In this embodiment, when the remote control device is in a standby state and no key signal is input, the key detection unit 220 sets the scan ports A1 to AM to a low level, controls the pull-up switches S1 to SN to be turned on, so that the detection ports B1 to BN are at a high level, and the control module 300 turns off all the electric components.

Referring to fig. 2, in the present embodiment, the load module 400 includes: a timing unit 410, a reference unit 420, an encoding unit 430, and a transmitting unit 440; the timing unit 410 is electrically connected to the encoding unit 430, and the timing unit 410 is configured to output a timing signal to the encoding unit 430 according to the key signal; the reference unit 420 is electrically connected to the timing unit 410, and the reference unit 420 is used for providing a time reference for the timing unit 410; the encoding unit 430 is electrically connected with the transmitting unit 440, and the encoding unit 430 is configured to encode according to the key signal and the timing signal and output an encoded signal to the transmitting unit 440; the transmitting unit 440 is configured to convert the encoded signal into the wireless signal and transmit the wireless signal.

It can be understood that, if a key signal is input in the standby state, the key detection unit 220 outputs a state signal to the control module 300, so that the control module 300 starts the timing unit 410, the reference unit 420, the encoding unit 430 and the transmission unit 440, and also outputs a key signal to the timing unit 410 and the encoding unit 430, the timing unit 410 outputs a timing signal to the encoding unit 430 according to the key signal, the encoding unit 430 encodes according to the key signal and the timing signal, and outputs an encoded signal to the transmission module, and the transmission module converts the encoded signal into a wireless signal to be transmitted outward, so as to remotely control a corresponding device and perform a corresponding key operation, wherein the reference unit 420 provides a time reference for the timing unit 410 after being started. In this embodiment, the control module 300 includes a controller, the timing unit 410 includes a timer, the encoding unit 430 includes an encoder, and the transmitting unit 440 includes an antenna or an infrared transmitter. The control module 300, the key detecting unit 220, the pull-up unit 210, the timing unit 410, the encoding unit 430, and the reference unit 420 are disposed in the same integrated circuit in this embodiment, and in other embodiments, may also be disposed in one of the sub-circuits of the upper integrated circuit.

In this embodiment, the reference unit 420 includes a low frequency oscillator 421, and the low frequency oscillator 421 is connected to the timing unit 410. A low frequency oscillator 421 provides a low frequency clock for the standby circuit and a time reference for the timing unit 410. Further, the reference unit 420 further includes a high-frequency oscillator 422, and the high-frequency oscillator 422 is connected to the low-frequency oscillator 421. The high frequency oscillator 422 provides a high frequency clock for the standby circuit while periodic frequency calibration is performed for the low frequency oscillator 421. It can be understood that, since the precision of the low-frequency oscillator 421 is poor and the precision of the high-frequency oscillator 422 is high, in this embodiment, the low-frequency oscillator 421 is calibrated through the high-frequency oscillator 422, and in the standby state, the low-frequency oscillator 421 and the high-frequency oscillator 422 are both in the off state, and when any key is triggered in the standby state, the low-frequency oscillator 421 and the high-frequency oscillator 422 are turned on through the control module 300, and at this time, the high-frequency oscillator 422 may calibrate the low-frequency oscillator 421 once; in the operating state, the low-frequency oscillator 421 is calibrated once by the high-frequency oscillator 422 every third preset time value T3.

Further, the key detection module 200 is further configured to compare the duration of the key signal with a first preset time value T1 in a standby state, and when the duration of the key signal is smaller than the first preset time value T1, the key detection module 200 outputs a first state signal, and the control module 300 maintains the load module 400 to be turned off according to the first state signal; when the duration of the key signal is greater than or equal to the first preset time value T1, the key detection module 200 outputs a second state signal, and the control module 300 turns on the load module 400 according to the second state signal. It is understood that unnecessary power consumption is generated to avoid the key being triggered by mistake, which may cause the power utilization components in the load module 400 to be activated. In this embodiment, the duration of the key signal, that is, the duration of the key closing trigger, is detected, when the duration of the key signal is less than the first preset time value T1, it is determined that the key signal is an invalid signal, the key detection unit 220 does not process the key signal, and when the duration of the key signal is greater than or equal to the first preset time value T1, the key detection unit 220 outputs a state signal according to the key signal.

The working flow of the standby circuit in this embodiment is as follows:

the standby circuit is connected to a power supply and enters a standby mode, when no key is triggered in a standby state, the key detection unit 220 sets the scanning ports A1 to AM to be at a low level and controls the pull-up switches S1 to SN to be closed so as to enable the detection ports B1 to BN to be at a high level, and at this time, the timing unit 410, the reference unit 420 and the encoding unit 430 are all closed.

When any key is triggered, at least one detection port is in a low level, the standby circuit enters a key detection state, the high-frequency oscillator 422 and the low-frequency oscillator 421 are started, the key detection unit 220 sets the scanning ports A1-AM to be in a low level for scanning in a time-sharing mode, and the scanning ports which are not in the low level in the process are set to be in a high impedance state. In the scanning process, when the key detection unit 220 detects that one of the detection ports is at the low level, the corresponding triggered key Bx-Ay is determined, and the corresponding key signal is acquired.

Continuously comparing the duration time of the key signal (namely the duration time of key triggering) with a first preset time value T1, and when the duration time of the key signal is less than the first preset time value T1, determining that the key signal is invalid, and keeping the standby circuit in a standby state; when the duration of the key signal is greater than or equal to the first preset time value T1, it is determined as an effective signal, the standby circuit enters a working state, the encoding unit 430 and the timing unit 410 are both started, and the encoding unit 430 outputs an encoding signal of a second preset time value T2 according to the key signal and the timing signal. The first preset time value T1 and the second preset time value T2 corresponding to each key signal are different from other key signals.

When the standby circuit is in a working state and is in a key detection period, the key detection unit 220 controls the pull-up switches S1 to SN to be closed, so that the pull-up resistors R1 to RN are all connected to the circuit, the detection ports B1 to BN acquire key signals of the key array module 100 for the input ports, the scanning ports A1 to AM output low levels to the key array module 100 in a time-sharing manner, and the scanning ports not in the low levels are set to be in a high-resistance state. In the scanning process, when the key detection unit 220 detects that one of the detection ports is at a low level, the correspondingly triggered key Bx-Ay is determined, and a corresponding key signal is acquired. Judging whether the key signal is valid through the above method, if the key signal is judged to be invalid, the key detection unit 220 does not output the key signal to the timing unit 410 and the encoding unit 430; if the key detection unit 220 outputs the key signal, the encoding unit 430 outputs an encoding signal of a second preset time value T2 according to the key signal and the timing signal.

When the standby circuit is in a working state and is in a non-key detection period, the key detection unit 220 controls the pull-up switches S1 to SN to be all disconnected, the pull-up resistors R1 to RN are not connected into the circuit, the key detection unit 220 sets the scanning ports A1 to AM to be in a high-resistance state, at the moment, the detection ports B1 to BN can be used as ports with other functions, and the coding unit 430 does not output coding signals. When a valid shutdown key signal is detected in the key detection period or a predetermined shutdown time is reached, the encoding unit 430 outputs a shutdown encoding signal, and after a second preset time value T2 of the encoding signal is ended, the standby circuit exits from the operating state and enters into the standby state.

The embodiment also discloses a remote control device, which comprises the standby circuit, wherein the remote control device can be an air conditioner remote controller or a television remote controller and the like.

Further, this embodiment also discloses an electronic device, which includes the remote control device as described above, and the electronic device may be an air conditioner or a television.

To sum up, the utility model provides a standby circuit, remote control unit and electronic equipment, this embodiment is through above-mentioned setting, and all power consumption components and parts in the load module are closed under standby state for standby current in the standby circuit reduces to 0.7 muA, compares in present remote control unit's 5 muA's standby current and has reduced 85%, has greatly reduced remote control unit's standby power consumption, is favorable to improving the life of remote control unit's battery.

In addition, the standby circuit uses a high-frequency oscillator to calibrate the low-frequency oscillator, and in the standby state, the high-frequency oscillator and the low-frequency oscillator are both turned off, thereby reducing the power consumption of the standby circuit.

The above mentioned is only the embodiment of the present invention, and not the limitation of the patent scope of the present invention, all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims (10)

1. A standby circuit, comprising: the key array module, the key detection module, the control module and the load module comprise a plurality of power utilization components;

the key array module is electrically connected with the key detection module and is used for outputting a key signal to the key detection module;

the key detection module is respectively electrically connected with the control module and the load module, and is used for outputting a state signal to the control module according to the key signal and outputting the key signal to the load module;

the control module is electrically connected with the load module and is used for closing the load module in a standby state and opening the load module according to the state signal in the standby state;

the load module is used for converting the key signal into a wireless signal and outputting the wireless signal outwards.

2. The standby circuit of claim 1, wherein the key array module comprises: the key array comprises M rows of lines and N columns of lines, wherein each intersection of the rows of lines and the columns of lines is provided with a key to form a key array of M rows and N columns, wherein M and N are positive integers;

one end of each key is connected with the corresponding row line, the other end of each key is connected with the corresponding column line, and the row line and the column line are electrically connected with the key detection module.

3. The standby circuit of claim 2, wherein the key detection module comprises: m scanning ports, N detection ports, a pull-up unit and a key detection unit;

the scanning ports are connected with the row lines in a one-to-one corresponding mode, and the detection ports are connected with the column lines in a one-to-one corresponding mode;

the key detection unit is respectively connected with the load module, the pull-up unit, the scanning port and the detection port, and is used for acquiring the key signal through the scanning port and the detection port, outputting the state signal to the load module according to the key signal, outputting a pull-up control signal to the pull-up unit in a standby state and setting the scanning port to be at a low level;

the pull-up unit is respectively connected with the detection ports and the key detection unit, and is used for pulling up the N detection ports to high level according to the pull-up control signal.

4. The standby circuit of claim 3, wherein the pull-up unit comprises: pull-up switches and pull-up resistors which are connected with the detection ports in a one-to-one correspondence manner;

the input end of the pull-up switch is connected with an input power supply, the output end of the pull-up switch is connected with one end of the pull-up resistor, and the control end of the pull-up switch is connected with the key detection unit;

and the other end of the pull-up resistor is connected with the detection port.

5. The standby circuit of claim 1, wherein the load module comprises: the device comprises a timing unit, a reference unit, a coding unit and a transmitting unit;

the timing unit is electrically connected with the coding unit and is used for outputting a timing signal to the coding unit according to the key signal;

the reference unit is electrically connected with the timing unit and is used for providing a time reference for the timing unit;

the coding unit is electrically connected with the transmitting unit and is used for coding according to the key signal and the timing signal and outputting a coding signal to the transmitting unit;

the transmitting unit is used for converting the coded signal into the wireless signal and transmitting the wireless signal outwards.

6. Standby circuit according to claim 5, wherein the reference unit comprises a low frequency oscillator, the low frequency oscillator being connected to the timing unit.

7. The standby circuit of claim 6 wherein said reference unit further comprises a high frequency oscillator, said high frequency oscillator being connected to said low frequency oscillator.

8. The standby circuit of claim 1, wherein the key detection module is further configured to compare a duration of the key signal with a first preset time value in the standby state,

when the duration time of the key signal is less than the first preset time value, the key detection module outputs a first state signal, and the control module maintains the load module to be closed according to the first state signal;

when the duration time of the key signal is greater than or equal to the first preset time value, the key detection module outputs a second state signal, and the control module starts the load module according to the second state signal.

9. A remote control device comprising a standby circuit according to any one of claims 1-8.

10. An electronic device, characterized in that it comprises a remote control apparatus as claimed in claim 9.

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