CN216388336U - Low-cost and high-reliability wireless remote control system - Google Patents
Low-cost and high-reliability wireless remote control system Download PDFInfo
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- CN216388336U CN216388336U CN202122460583.4U CN202122460583U CN216388336U CN 216388336 U CN216388336 U CN 216388336U CN 202122460583 U CN202122460583 U CN 202122460583U CN 216388336 U CN216388336 U CN 216388336U
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Abstract
The utility model discloses a low-cost and high-reliability wireless remote control system, which comprises: a manual control box unit and a main machine unit; the manual control box unit comprises an MCU chip, a wireless chip, a PA power amplification module and a transmitting antenna, wherein the output end of the MCU chip is electrically connected with the input end of the wireless chip, and the output end of the wireless chip is electrically connected with the transmitting antenna through the PA power amplification module. According to the utility model, a domestic chip SI24R1 is used as a wireless chip, a wireless part structure of a receiving end is a wireless chip and a board-mounted antenna, no additional antenna is required, the cost of the antenna is saved, a 2.4G wireless scheme is adopted, the transmission rate of a 2.4GHz frequency band is high, the bandwidth is large, the adjacent frequency interference is not easy to cause, a transmitting end adopts the wireless chip and a PA power amplification module and a transmitting antenna, the low cost is considered, meanwhile, the wireless communication distance is greatly increased through the PA power amplification module, and the communication effect with the same distance as 433MHz is realized.
Description
Technical Field
The utility model relates to the technical field of wireless remote control systems, in particular to a wireless remote control system with low cost and high reliability.
Background
As is known, a wireless remote control system is used to realize non-contact remote control of a controlled object, and is widely applied in the fields of industrial control, aerospace and household appliances. Wireless remote control and wireless transmission systems have increased freedom of movement compared to wired and infrared devices. This makes the use of wireless remote control devices and wireless transmission systems more and more in the industrial field. Advantages over cabling are low installation costs (no wiring, no underground works, no cable troughs), increased flexibility and reduced maintenance costs.
In the existing local wireless remote control system, the communication frequency band mostly adopts the 433MHz frequency band, and in the application of sensitive cost, manufacturers directly control the forward rotation and the reverse rotation of a motor by a relay at the host end of the remote control system in order to save the cost. The relay at the host end directly drives the alternating current motor, and at the moment of disconnection of the relay, because the motor is an inductive load, electric arcs can be generated between relay contacts, so that the relay contacts are accelerated to age, and even are directly damaged. The specific expression form is that the relay contact is adhered, and the relay is damaged or the whole machine is damaged after the product is used for a period of time. Although some manufacturers use custom relays, the above problems cannot be fundamentally improved, and the custom relays add extra cost on the other hand.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a wireless remote control system with low cost and high reliability so as to solve the defects in the prior art.
In order to achieve the purpose, the utility model adopts the following technical scheme: a low cost, high reliability wireless remote control system comprising: a manual control box unit and a main machine unit;
the manual control box unit comprises an MCU chip, a wireless chip, a PA power amplification module and a transmitting antenna, wherein the output end of the MCU chip is electrically connected with the input end of the wireless chip, and the output end of the wireless chip is electrically connected with the transmitting antenna through the PA power amplification module;
the host unit comprises a receiving antenna, a wireless module, an MCU module and a relay control circuit module, wherein the receiving antenna is in wireless communication connection with the transmitting antenna, the output end of the receiving antenna is electrically connected with the MCU module through the wireless module, the output end of the MCU module is electrically connected with the input end of the relay control circuit module, and the output end of the relay control circuit module is electrically connected with the input end of the motor control interface.
As a further description of the above technical solution:
the relay control circuit module comprises a relay module, an RC absorption loop and an MOV voltage dependent resistor, the relay module is electrically connected with the motor control interface, and the RC absorption loop and the MOV voltage dependent resistor are electrically connected with the relay module.
As a further description of the above technical solution:
the model of the wireless chip is SI24R1, and the communication frequency band of the wireless chip is 2.4 GHz.
As a further description of the above technical solution:
the model of the PA power amplification module is AT2401C, and the transmitting antenna is an external antenna.
As a further description of the above technical solution:
the model of the wireless module is SI24R1, and the receiving antenna is an on-board antenna.
As a further description of the above technical solution:
the manual control box unit further comprises a control key and a battery, the output end of the control key is electrically connected with the input end of the MCU chip to input a control signal through the control key, and the output end of the battery is electrically connected with the input end of the MCU chip to provide a working power supply for the MCU chip.
As a further description of the above technical solution:
the host unit further comprises a power supply module, wherein the output end of the power supply module is electrically connected with the input end of the relay control circuit module and the input end of the MCU module respectively, so that a working power supply is provided for the relay control circuit module and the MCU module through the power supply module.
As a further description of the above technical solution:
the power supply module comprises an EMC protection module, an AC/DC module and a DC/AC module, the EMC protection module is electrically connected with an external power supply, the output end of the EMC protection module is electrically connected with the input end of the AC/DC module, the output end of the AC/DC module is electrically connected with the input end of the DC/AC module, and the output end of the DC/AC module is electrically connected with the input end of the relay control circuit module and the input end of the MCU module respectively.
The utility model provides a wireless remote control system with low cost and high reliability. The method has the following beneficial effects:
the wireless remote control system with low cost and high reliability adopts a domestic chip SI24R1 as a wireless chip, a wireless part structure of a receiving end is a wireless chip and a board-mounted antenna, and an antenna is not required to be additionally arranged, so that the cost of the antenna can be saved, meanwhile, a 2.4G wireless scheme is adopted, the transmission rate of a 2.4GHz frequency band is high, the bandwidth is large, the adjacent frequency interference is not easy to be suffered, but the wavelength is shorter than that of a 433MHz frequency band, but the transmission distance is short under the same condition, the transmission distance is short, the transmission distance is low by adopting the wireless chip and a PA power amplification module and a transmitting antenna at the transmitting end, and simultaneously, the wireless communication distance is greatly increased by the PA power amplification module, the communication effect with the same distance as 433MHz is realized, secondly, a relay control circuit module is additionally provided, when the relay module is disconnected, the RC absorption circuit absorbs the generated voltage spike, when the voltage exceeds the protection amplitude of the MOV voltage dependent resistor, the MOV voltage dependent resistor is conducted to further limit the voltage spike, inhibit the generation of electric arc and protect the contact of the relay module.
Drawings
FIG. 1 is a schematic diagram of a low-cost and highly reliable wireless remote control system according to the present invention;
FIG. 2 is a system block diagram of the manual cassette unit of the present invention;
FIG. 3 is a system block diagram of a host unit in the present invention;
FIG. 4 is a system block diagram of a power module of the present invention;
fig. 5 is a system block diagram of a relay control circuit module according to the present invention.
Illustration of the drawings:
1. a manual control box unit; 11. a control key; 12. a battery; 13. an MCU chip; 14. a wireless chip; 15. A PA power amplification module; 16. a transmitting antenna; 2. a host unit; 21. an MCU module; 22. a relay control circuit module; 221. a relay module; 222. an RC absorption loop; 223. an MOV varistor; 23. A motor control interface; 24. a power supply module; 241. an EMC protection module; 242. an AC/DC module; 243. a DC/AC module; 25. a wireless module; 26. and a receiving antenna.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a low cost, high reliability wireless remote control system comprising: the hand control box unit 1 comprises an MCU chip 13, a wireless chip 14, a PA power amplification module 15 and a transmitting antenna 16, wherein the output end of the MCU chip 13 is electrically connected with the input end of the wireless chip 14, and the output end of the wireless chip 14 is electrically connected with the transmitting antenna 16 through the PA power amplification module 15; specifically, the model of the wireless chip 14 is SI24R1, the communication frequency band of the wireless chip 14 is 2.4GHz, the model of the PA power amplification module 15 is AT2401C, the transmitting antenna 16 is an external antenna, the MCU chip 13 transmits the control signal to the wireless chip 14, the wireless chip 14 receives the control signal, converts the control signal into a radio frequency signal, transmits the radio frequency signal to the PA power amplification module 15 for processing, and then wirelessly transmits the radio frequency signal through the transmitting antenna 16, that is, the radio frequency signal is amplified by the PA power amplification module 15 and then is fed to the transmitting antenna 16 for radiation; the host unit 2 includes a receiving antenna 26, a wireless module 25, an MCU module 21 and a relay control circuit module 22, the receiving antenna 26 is connected to the transmitting antenna 16 in a wireless communication manner, an output end of the receiving antenna 26 is electrically connected to the MCU module 21 through the wireless module 25, an output end of the MCU module 21 is electrically connected to an input end of the relay control circuit module 22, and an output end of the relay control circuit module 22 is electrically connected to an input end of the motor control interface 23. Specifically, the model of wireless module 25 is SI24R1, receiving antenna 26 is board-mounted antenna, the radio frequency signal that transmitting antenna 16 sent is received to receiving antenna 26 wireless, then with signal transmission to wireless module 25, convert transmission to MCU module 21 through wireless module 25, MCU module 21 output control signal to relay control circuit module 22, relay control circuit module 22 realizes controlling the motor through motor control interface 23, realize wireless remote control promptly.
The embodiment provides a low-cost and high-reliability wireless remote control system, which is applied to industrial wireless controllers, civil wireless controllers, electric hoists, cranes and cranes, and is known that 433MHz wireless remote control is mostly adopted in the field of the wireless remote control at present, a 2.4G wireless scheme is not adopted in the field, a domestic 2.4G scheme is not adopted in the field, conventional 433MHz wireless remote control is adopted, the cost is higher regardless of domestic or foreign chip schemes, the low-cost and high-reliability wireless remote control system adopts a domestic chip SI24R1 as a wireless chip 14, a receiving end wireless part structure is a wireless module 25 loaded antenna, and no additional antenna is needed, so that the antenna cost can be saved, meanwhile, the 2.4G wireless scheme is adopted, the 2.4GHz frequency band transmission rate is high, the bandwidth is large, and the wireless remote control system is not easily interfered by adjacent frequencies, but the wavelength of the antenna is shorter than the 433MHz frequency band, but the transmission distance is short under the same condition, the transmitting end adopts the wireless chip 14, the PA power amplification module 15 and the transmitting antenna 16, the cost is low, meanwhile, the wireless communication distance is greatly increased through the PA power amplification module 15, and the communication effect at the same distance as 433MHz is realized.
The relay control circuit module 22 includes a relay module 221, an RC absorption circuit 222 and an MOV varistor 223, the relay module 221 is electrically connected to the motor control interface 23, and the RC absorption circuit 222 and the MOV varistor 223 are electrically connected to the relay module 221. Specifically, in the motor driving circuit, the positive and negative rotation control of the motor is controlled by the relay module 221, because the motor is an inductive load, after the motor is started, the relay module 221 cuts off the running current of the motor, voltage spikes can be induced at two ends of a contact of the relay module 221, even electric arcs are generated, the contact of the relay module 221 can be ablated by the electric arcs, so that the aging or adhesion is accelerated, the RC absorption circuit 222 and the MOV piezoresistor 223 are additionally arranged in the relay control circuit module 22, when the relay module 221 is disconnected, the RC absorption circuit 222 absorbs the generated voltage spikes, when the voltage exceeds the protection amplitude of the MOV piezoresistor 223, the MOV piezoresistor 223 is conducted, the voltage spikes are further limited, the generation of the electric arcs is inhibited, and the contact of the relay module 221 is protected.
The manual control box unit 1 further comprises a control key 11 and a battery 12, wherein an output end of the control key 11 is electrically connected with an input end of the MCU chip 13 to realize the input of a control signal through the control key 11, and an output end of the battery 12 is electrically connected with an input end of the MCU chip 13 to realize the supply of a working power supply for the MCU chip 13.
The host unit 2 further includes a power supply module 24, and an output end of the power supply module 24 is electrically connected to an input end of the relay control circuit module 22 and an input end of the MCU module 21, respectively, so as to provide a working power supply for the relay control circuit module 22 and the MCU module 21 through the power supply module 24. The power supply module 24 includes an EMC protection module 241, an AC/DC module 242, and a DC/AC module 243, the EMC protection module 241 is electrically connected to an external power source, an output terminal of the EMC protection module 241 is electrically connected to an input terminal of the AC/DC module 242, an output terminal of the AC/DC module 242 is electrically connected to an input terminal of the DC/AC module 243, and an output terminal of the DC/AC module 243 is electrically connected to an input terminal of the relay control circuit module 22 and an input terminal of the MCU module 21, respectively.
Specifically, the power supply module 24 adopts an AC/DC module switching power supply, and the EMC protection module 241 is additionally provided, compared with a transformer step-down scheme, the power supply module has the advantages of reduced cost, improved reliability, wide input voltage range and improved usability of the product.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (8)
1. A low cost, high reliability wireless remote control system comprising: manual box unit (1) and host computer unit (2), its characterized in that:
the manual control box unit (1) comprises an MCU chip (13), a wireless chip (14), a PA power amplification module (15) and a transmitting antenna (16), wherein the output end of the MCU chip (13) is electrically connected with the input end of the wireless chip (14), and the output end of the wireless chip (14) is electrically connected with the transmitting antenna (16) through the PA power amplification module (15);
host computer unit (2) include receiving antenna (26), wireless module (25), MCU module (21) and relay control circuit module (22), receiving antenna (26) with transmitting antenna (16) wireless communication connects, the output of receiving antenna (26) passes through wireless module (25) and MCU module (21) electric connection, and the output of MCU module (21) with the input electric property of relay control circuit module (22), the output of relay control circuit module (22) and the input electric connection of motor control interface (23).
2. A low cost, high reliability wireless remote control system according to claim 1 wherein the relay control circuit module (22) comprises a relay module (221), an RC snubber circuit (222) and an MOV varistor (223), the relay module (221) is electrically connected to the motor control interface (23), and the RC snubber circuit (222) and the MOV varistor (223) are electrically connected to the relay module (221).
3. A low-cost and high-reliability wireless remote control system according to claim 1, wherein the model of the wireless chip (14) is SI24R1, and the communication frequency band of the wireless chip (14) is 2.4 GHz.
4. A low cost, high reliability wireless remote control system according to claim 1, wherein the PA power amplification module (15) is of the type AT2401C, and the transmitting antenna (16) is an external antenna.
5. A low cost, high reliability wireless remote control system according to claim 1, wherein the wireless module (25) is of type SI24R1 and the receiving antenna (26) is an on-board antenna.
6. The low-cost and high-reliability wireless remote control system according to claim 1, wherein the manual control box unit (1) further comprises a control key (11) and a battery (12), an output end of the control key (11) is electrically connected with an input end of the MCU chip (13) to realize the input of a control signal through the control key (11), and an output end of the battery (12) is electrically connected with an input end of the MCU chip (13) to realize the supply of a working power supply for the MCU chip (13).
7. The low-cost and high-reliability wireless remote control system according to claim 1, wherein the host unit (2) further comprises a power supply module (24), and an output end of the power supply module (24) is electrically connected to an input end of the relay control circuit module (22) and an input end of the MCU module (21), respectively, so as to provide a working power supply for the relay control circuit module (22) and the MCU module (21) through the power supply module (24).
8. A low cost, high reliability wireless remote control system according to claim 7 wherein said power supply module (24) comprises an EMC protection module (241), an AC/DC module (242) and a DC/AC module (243), said EMC protection module (241) is electrically connected to an external power source, and the output of the EMC protection module (241) is electrically connected to the input of the AC/DC module (242), the output of said AC/DC module (242) is electrically connected to the input of the DC/AC module (243), and the output of the DC/AC module (243) is electrically connected to the input of the relay control circuit module (22) and the input of the MCU module (21), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122460583.4U CN216388336U (en) | 2021-10-13 | 2021-10-13 | Low-cost and high-reliability wireless remote control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122460583.4U CN216388336U (en) | 2021-10-13 | 2021-10-13 | Low-cost and high-reliability wireless remote control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216388336U true CN216388336U (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122460583.4U Active CN216388336U (en) | 2021-10-13 | 2021-10-13 | Low-cost and high-reliability wireless remote control system |
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| Country | Link |
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| CN (1) | CN216388336U (en) |
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- 2021-10-13 CN CN202122460583.4U patent/CN216388336U/en active Active
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