CN209962405U - Wireless remote control transmitter, receiver and wireless remote control system - Google Patents
Wireless remote control transmitter, receiver and wireless remote control system Download PDFInfo
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- CN209962405U CN209962405U CN201920993423.6U CN201920993423U CN209962405U CN 209962405 U CN209962405 U CN 209962405U CN 201920993423 U CN201920993423 U CN 201920993423U CN 209962405 U CN209962405 U CN 209962405U
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Abstract
The utility model discloses a wireless remote control transmitter, receiver and wireless remote control system, this transmitter includes first power module, switch module, button module, first single chip module and wireless transmitting module, and first power module is connected with the power end of first single chip module, the power end of wireless transmitting module respectively through switch module, and one end and the switch module of button module are connected, and the other end is connected with wireless transmitting module through first single chip module; when a key is pressed down in the key module, the switch module is switched on, the first power supply module supplies power to the single chip microcomputer module and the wireless transmitting module, the single chip microcomputer module receives a key signal output by the key module, and the output coding signal is sent through the wireless transmitting module. The utility model has the advantages of simple and compact structure, low cost, small volume, low power consumption, strong anti-interference performance and the like.
Description
Technical Field
The utility model relates to a wireless remote control technical field especially relates to a wireless remote control transmitter, receiver and wireless remote control system.
Background
Wireless remote control equipment is widely applied in various fields, currently, wireless remote control is generally realized by using a 315M/433M transceiver module and a dedicated codec chip, for example, a transmitting part is composed of a PT2262 coding chip and a 315M/433M radio frequency transmitting circuit, and a receiving part is composed of a PT2272 decoding chip and a 315M/433M radio frequency receiving circuit, but the above wireless remote control scheme has the following problems:
1. high cost and large volume. The special codec chips such as PT2262 and PT2272 are usually high in cost and large in size.
2. The address bits are few and inconvenient to change. The encoding and decoding chips such as PT2262 and PT2272 can only provide 12-bit address bits at most, and the address key must be formed by setting the high and low levels of the address bits through welding resistance in a circuit board.
3. Mutual interference is liable to occur. When multiple wireless remote control devices exist in the same environment, mutual interference can easily occur between the remote control devices based on the same encoding and decoding rules of the PT2262 encoding and decoding chips and the PT2272 encoding and decoding chips.
4. The energy consumption is high. The wireless remote control device using the 315M/433M transceiver module and the dedicated codec chip needs to be in a standby state of circuit connection all the time, and the circuit still has a certain energy consumption when no key is pressed, which causes energy waste.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in: to the technical problem that prior art exists, the utility model provides a simple structure is compact, with low costs, small, low power dissipation and interference immunity strong wireless remote control transmitter, receiver and wireless remote control system.
In order to solve the technical problem, the utility model provides a technical scheme does:
a wireless remote control transmitter comprises a first power supply module, a switch module, a key module, a first single chip microcomputer module and a wireless transmitting module, wherein the first power supply module is respectively connected with a power supply end of the first single chip microcomputer module and a power supply end of the wireless transmitting module through the switch module; when a key is pressed down in the key module, the switch module is switched on, the first power supply module supplies power to the single chip microcomputer module and the wireless transmitting module, the single chip microcomputer module receives a key signal output by the key module, and an output coding signal is sent through the wireless transmitting module.
Furthermore, the switch module is an MOS switch tube, a source electrode of the MOS switch tube is connected with a power supply, and a grid electrode of the MOS switch tube is connected with the key module.
Furthermore, the key module comprises a plurality of key switches, one end of each key switch is connected with the switch module, and the other end of each key switch is connected with one signal input end of the first single chip microcomputer module.
Further, a resistance voltage division module is further arranged between the switch module and the key module and used for forming resistance voltage division to enable the switch module to be conducted when a key in the key module is pressed down.
Further, the resistance voltage dividing module includes a first voltage dividing resistor disposed at two ends of the switch module, and a second voltage dividing resistor disposed at one side of each key switch in the key module, and when a key is pressed in the key module, the first voltage dividing resistor and the second voltage dividing resistor form resistance voltage division to turn on the switch module.
Further, the single chip microcomputer module is an STC15 single chip microcomputer.
Furthermore, the first power module comprises a storage battery and a power conversion unit which are connected with each other, and the power output by the storage battery is output after being converted by the power conversion unit.
The wireless remote control receiver comprises a second power supply module, a second single chip microcomputer module and a wireless receiving module which are sequentially connected, wherein the wireless receiving module receives a coded signal sent by the wireless remote control transmitter and outputs the coded signal to the second single chip microcomputer module, and the second single chip microcomputer module receives the coded signal output by the wireless receiving module and outputs a decoded signal.
Further, the second singlechip module is an STC15 singlechip.
A wireless remote control system, characterized by: the wireless remote control system comprises the wireless remote control transmitter and the wireless remote control receiver, wherein the wireless remote control transmitter is in wireless connection with the wireless remote control receiver.
Compared with the prior art, the utility model has the advantages of: the utility model discloses wireless remote control transmitter, receiver and wireless remote control system, realize the code to key signal through using the singlechip, decode, compare in traditional special coding chip, low cost, small and do not have the restriction of address bit, interference immunity between the remote control can also be strengthened by a wide margin based on the singlechip, simultaneously through the ingenious mode control switch module break-make that utilizes the keying power, after the button is pressed, switch module switches on, just can supply power of first single chip module and wireless transmitting module, start wireless remote control signalling, when not having the button to press, first single chip module and wireless transmitting module then cut off the power supply, unnecessary energy consumption can be reduced in a large number, reduce whole wireless remote control's consumption and cost of realization.
Drawings
Fig. 1 is a schematic structural diagram of a wireless remote control transmitter of the present embodiment.
Fig. 2 is a schematic diagram of a specific circuit structure of the wireless remote control transmitter in this embodiment.
Fig. 3 is a schematic structural diagram of the wireless remote control receiver in the present embodiment.
Fig. 4 is a schematic diagram of a specific circuit structure of the wireless remote control receiver in this embodiment.
Fig. 5 is a schematic structural diagram of the wireless remote control system in the present embodiment.
Illustration of the drawings: 1. a wireless remote control transmitter; 11. a first power supply module; 12. a switch module; 13. a key module; 14. a first one-chip microcomputer module; 15. a wireless transmitting module; 2. a wireless remote control receiver; 21. a second power supply module; 22. a second single chip module; 23. and a wireless receiving module.
Detailed Description
The invention will be further described with reference to the drawings and specific preferred embodiments without limiting the scope of the invention.
As shown in fig. 1, the wireless remote control transmitter of this embodiment includes a first power module 11, a switch module 12, a key module 13, a first single-chip module 14 and a wireless transmitting module 15, where the first power module 11 is connected to a power end of the first single-chip module 14 and a power end of the wireless transmitting module 15 through the switch module 12, respectively, one end of the key module 13 is connected to the switch module 12, and the other end is connected to the wireless transmitting module 15 through the first single-chip module 14; when a key is pressed down in the key module 13, the switch module 12 is switched on, the first power module 11 supplies power to the single chip microcomputer module 14 and the wireless transmitting module 15, the single chip microcomputer module 4 receives a key signal output by the key module 13, and the output coding signal is sent through the wireless transmitting module 15.
The above-mentioned wireless remote control transmitter of this embodiment, realize the code to key signal through using the singlechip, compare in traditional special coding chip, it is with low costs, small and do not have the restriction of address bit, interference immunity between the remote control can also be strengthened by a wide margin based on the singlechip, simultaneously through the ingenious mode control switch module 12 break-make that utilizes the key power supply, after the button is pressed, switch module 12 switches on, first singlechip module 14 and wireless transmitting module 15 just can supply power, begin to carry out wireless remote control signalling, when not having the button to press, first singlechip module 14 and wireless transmitting module 15 then cut off the power supply, can reduce unnecessary energy consumption in a large number, especially be fit for among the battery power supply system such as wireless remote control.
As shown in fig. 2, in this embodiment, the switch module 12 is specifically a MOS switch Q1, a source of the MOS switch Q1 is connected to the power supply, a gate of the MOS switch Q1 is connected to the key module 13, and the key module 13 controls on/off of the MOS switch Q1. When a key is pressed down in the key module 13, a voltage difference exists between the gate and the source of the MOS switch tube Q1, the MOS switch tube Q1 is turned on, and when the key is not pressed down, the power consumption of the whole remote control transmitter is only the leakage current between the drain and the source of the MOS switch tube, which is almost 0, so that the whole power consumption of the wireless remote control transmitter is low.
In this embodiment, the key module 13 includes a plurality of key switches, one end of each key switch is connected to the switch module 2, and the other end of each key switch is connected to one signal input end of the first single chip module 14. As shown in fig. 2, 4 key switches (SW 1-SW 4) are specifically provided, one end of each key switch is connected to the gate of the MOS switch transistor Q1, and the other end is connected to one input port of the first mcu 14.
In this embodiment, a resistance voltage dividing module is further disposed between the switch module 12 and the key module 13, and is configured to form resistance voltage division to turn on the switch module 12 when a key in the key module 13 is pressed.
In this embodiment, the resistance voltage dividing module includes a first voltage dividing resistor disposed at two ends of the switch module 12 and a second voltage dividing resistor disposed at one side of each key switch in the key module 13, and when a key is pressed in the key module 13, the first voltage dividing resistor and the second voltage dividing resistor form resistance voltage division to turn on the switch module 12. As shown in fig. 2, a voltage dividing resistor R3 is disposed between the gate and the source of the MOS switch tube Q1, one voltage dividing resistor (R4, R5, R11, R12) is disposed between the output side of each of the key switches (SW1 to SW4) and ground, and when the key switch SW1 is pressed, the voltage dividing resistor R4 and the voltage dividing resistor R3 form a resistor voltage dividing action on the 1 pin and the 2 pins of the switch tube Q1, so that a voltage difference exists between the gate and the source of the MOS switch tube Q1 to turn on the switch tube Q1.
In this embodiment, the single chip microcomputer module 4 is an STC15 single chip microcomputer, and is low in cost and small in size, and can flexibly meet the requirement of transmitting codes. As shown in fig. 2, the single chip module 4 may specifically adopt an STC15F104 chip, the STC15F104 chip has 8 pins, the signal input ends (P3.0-P3.3) are respectively connected to a key switch, the power supply end is connected to the first power module 11, the key module 13 controls the power supply, and the output end P3.5 is connected to the data input interface of the wireless transmission module 15. The STC15F104 chip has very low chip cost and small volume, can greatly reduce the realization cost of wireless remote control, is convenient for realizing a miniaturized and portable wireless remote control transmitter, and can be carried about conveniently.
In this embodiment, first power module 11 includes interconnect's battery and power conversion unit, and the power of battery output exports after the power conversion unit conversion, and power conversion unit specifically adopts power chip LDO, and the voltage size (this embodiment specifically is 5V) that is applicable to first single chip module 14 with battery power voltage, provides first single chip module 14 power supply, and the break-make of power supply is pressed down control by button module 13 whether has the button.
As shown in fig. 2, in the wireless remote control transmitter of this embodiment, the wireless remote control transmitter is powered by a battery, the first single chip microcomputer module 14 employs a single chip microcomputer U2, the switch module 12 employs a P-channel MOS transistor Q1, the MOS transistor Q1 serves as a main power switch of the wireless remote control transmitter, the first power module 11 employs an LDO power chip U1, the wireless transmitter module 15 employs a wireless transmitter chip U3, when one of the SW1 to SW4 is pressed, a voltage difference occurs between two pins 1 and 2 of the switch Q1, the MOS transistor Q1 is turned on, the V9P0A network is started to supply power, one path of the power network is supplied to the single chip microcomputer U2 through the power chip U1, the wireless transmitter chip U3 is directly supplied with power, when the other key is released, the MOS transistor Q1 is turned off, and the power supply between the single chip microcomputer U2 and the wireless transmitter chip U3 is disconnected, so that the power consumption of.
As shown in fig. 3, the wireless remote control receiver of this embodiment includes a second power module 21, a second single-chip microcomputer module 22, and a wireless receiving module 23, which are connected in sequence, where the wireless receiving module 23 receives the encoded signal sent by the wireless remote control transmitter and outputs the encoded signal to the second single-chip microcomputer module 22, and the second single-chip microcomputer module 22 outputs the decoded signal.
The wireless remote control receiver of the embodiment can be matched with the wireless remote control transmitter to realize wireless remote control of the equipment, the wireless remote control transmitter sends a remote control signal, the wireless remote control receiver receives the remote control signal and then decodes the remote control signal, and the decoded remote control signal controls the controlled equipment. The embodiment realizes the decoding of the key signals by using the singlechip, has low cost and small volume and does not have the limitation of address bits compared with the traditional special decoding chip PT2272, and can greatly enhance the anti-interference performance between remote controls based on the singlechip.
In this embodiment, the second single chip microcomputer module 22 is an STC15 single chip microcomputer, that is, the STC15 single chip microcomputer is used to respectively implement transmitting, encoding, receiving and decoding, and the implementation cost can be greatly reduced based on the single chip microcomputer and the size is small.
As shown in fig. 4, in the wireless remote control receiver of this embodiment, a carrier board is used for supplying power, the second single chip microcomputer module 22 uses an STC15F104 chip U1, the wireless receiving module 23 uses a wireless receiving chip J2, an output pin of the wireless receiving chip J2 is connected to P3.5 of the single chip microcomputer U1, the wireless receiving chip J2 receives electromagnetic waves in an environment, demodulates wireless signals when receiving electromagnetic waves consistent with a transmission signal frequency (for example, common 315M/433M), outputs demodulated high and low level modulation signals from the pin, and the single chip microcomputer U1 analyzes and decodes the modulation signals input by the P3.5 pin and outputs the decoded signals through an output interface J1.
As shown in fig. 5, the wireless remote control system of this embodiment includes the wireless remote control transmitter 1 and the wireless remote control receiver 2, where the wireless remote control transmitter 1 is wirelessly connected to the wireless remote control receiver 2, the wireless remote control transmitter 1 transmits a remote control signal, the wireless remote control receiver 2 receives the remote control signal and decodes the remote control signal, and the decoded remote control signal controls the controlled device. The wireless remote control transmitter 1 comprises a first power module 11, a switch module 12, a key module 13, a first single chip microcomputer module 14 and a wireless transmitting module 15, the specific structure of the wireless remote control transmitter 1 is shown in fig. 2, the wireless remote control receiver 2 comprises a second power module 21, a second single chip microcomputer module 22 and a wireless receiving module 23 which are sequentially connected, and the specific structure of the wireless remote control receiver 2 is shown in fig. 4. At the end of the wireless remote control transmitter, when four keys SW1, SW2, SW3 and SW4 in the wireless remote control transmitter 1 are not pressed, the MOS tube Q1 is in an off state, the power consumption of the whole transmitting system is almost 0 at the moment, when one key is pressed on the four keys, the MOS tube Q1 is on, one path of output of the MOS tube Q1 supplies power to the singlechip U2 through the power chip U1, one path supplies power to the wireless transmitting chip U3, the singlechip U2 reads the pin level state of the keys (P3.0-P3.3), the coded waveform is output to the pin 1 (DATA) of the wireless transmitting chip U3, the wireless transmitting chip U3 performs on-off switch control on high-frequency wireless waves according to the high-low level on the pin 1 (DATA), and then transmits the high-frequency wireless signals through an antenna; the wireless remote control receiver 2 receives the signal transmitted by the wireless remote control transmitter 1, and when the wireless receiving chip J2 receives the radio wave with the same frequency, the radio wave is demodulated and output to the P3.5 pin of the single chip microcomputer U1, and the decoded signal is output.
The foregoing is illustrative of the preferred embodiment of the present invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A wireless remote control transmitter, characterized by: the wireless transmission device comprises a first power module (11), a switch module (12), a key module (13), a first single chip microcomputer module (14) and a wireless transmission module (15), wherein the first power module (11) is respectively connected with a power supply end of the first single chip microcomputer module (14) and a power supply end of the wireless transmission module (15) through the switch module (12), one end of the key module (13) is connected with the switch module (12), and the other end of the key module is connected with the wireless transmission module (15) through the first single chip microcomputer module (14); when a key is pressed down in the key module (13), the switch module (12) is switched on, the first power module (11) supplies power to the first single chip microcomputer module (14) and the wireless transmitting module (15), the first single chip microcomputer module (14) receives a key signal output by the key module (13), and the output coding signal is sent through the wireless transmitting module (15).
2. The wireless remote control transmitter of claim 1, wherein: the switch module (12) is an MOS switch tube, the source electrode of the MOS switch tube is connected with a power supply, and the grid electrode of the MOS switch tube is connected with the key module (13).
3. The wireless remote control transmitter of claim 2, wherein: the key module (13) comprises a plurality of key switches, one end of each key switch is connected with the switch module (12), and the other end of each key switch is connected with a signal input end of the first single chip microcomputer module (14).
4. A wireless remote control transmitter according to claim 1,2 or 3, wherein: and a resistance voltage division module is further arranged between the switch module (12) and the key module (13) and is used for forming resistance voltage division to enable the switch module (12) to be conducted when a key in the key module (13) is pressed down.
5. The wireless remote control transmitter of claim 4, wherein: the resistance voltage division module comprises first voltage division resistors arranged at two ends of the switch module (12) and second voltage division resistors arranged on one side of each key switch in the key module (13), and when a key is pressed down in the key module (13), the first voltage division resistors and the second voltage division resistors form resistance voltage division to enable the switch module (12) to be conducted.
6. A wireless remote control transmitter according to claim 1,2 or 3, wherein: the first singlechip module (14) is an STC15 singlechip.
7. A wireless remote control transmitter according to claim 1,2 or 3, wherein: the first power supply module (11) comprises a storage battery and a power supply conversion unit which are connected with each other, and power supply output by the storage battery is output after being converted by the power supply conversion unit.
8. A wireless remote control receiver, characterized by: the wireless remote control transmitter comprises a second power supply module (21), a second single chip microcomputer module (22) and a wireless receiving module (23) which are sequentially connected, wherein the wireless receiving module (23) receives a coded signal sent by the wireless remote control transmitter according to any one of claims 1-7 and outputs the coded signal to the second single chip microcomputer module (22), and the second single chip microcomputer module (22) receives the coded signal output by the wireless receiving module (23) and outputs a decoded signal.
9. The wireless remote control receiver of claim 8, wherein: the second singlechip module (22) is an STC15 singlechip.
10. A wireless remote control system, characterized by: comprising a wireless remote control transmitter according to any one of claims 1 to 7 and a wireless remote control receiver according to claims 8 and 9, the wireless remote control transmitter being wirelessly connected to the wireless remote control receiver.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920993423.6U CN209962405U (en) | 2019-06-28 | 2019-06-28 | Wireless remote control transmitter, receiver and wireless remote control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920993423.6U CN209962405U (en) | 2019-06-28 | 2019-06-28 | Wireless remote control transmitter, receiver and wireless remote control system |
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| CN209962405U true CN209962405U (en) | 2020-01-17 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599154A (en) * | 2020-06-02 | 2020-08-28 | 海信视像科技股份有限公司 | Remote controller |
| CN112634599A (en) * | 2021-01-06 | 2021-04-09 | 上海艾可慕通讯科技有限公司 | Wireless PTT key remote controller for interphone |
-
2019
- 2019-06-28 CN CN201920993423.6U patent/CN209962405U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111599154A (en) * | 2020-06-02 | 2020-08-28 | 海信视像科技股份有限公司 | Remote controller |
| CN112634599A (en) * | 2021-01-06 | 2021-04-09 | 上海艾可慕通讯科技有限公司 | Wireless PTT key remote controller for interphone |
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Inventor after: Liang Jingyue Inventor before: Liang Jingyue Inventor before: Yan Chaoying |
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