CN217082870U - Air-conditioning gateway - Google Patents
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- CN217082870U CN217082870U CN202221005883.1U CN202221005883U CN217082870U CN 217082870 U CN217082870 U CN 217082870U CN 202221005883 U CN202221005883 U CN 202221005883U CN 217082870 U CN217082870 U CN 217082870U
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Abstract
The utility model provides an air conditioner gateway, including first power supply conditioning circuit, power output circuit and control device, wherein, power output circuit includes: the power supply output end is positioned at the output end of the power supply output circuit and is electrically connected with the output end of the first power supply conditioning circuit; the switching circuit is connected with the third-party controller through a power supply output end; a drive protection circuit connected to the switching circuit; the voltage division detection circuit is connected with the power supply output end; the drive protection circuit receives an enable signal of the control device to control the on-off of the switch circuit; the voltage division detection circuit is connected with the control device through a voltage detection end. The power output circuit can supply power to the third-party controller, and meanwhile has a short-circuit protection function, detects voltage through the voltage division detection circuit, and controls the on-off of the switch circuit through the driving protection circuit, so that whether the power output circuit supplies power to the third-party controller is controlled. The problem of short circuit burnout caused by installation misoperation can be avoided, and the air conditioner gateway and the third-party controller are protected to the greatest extent.
Description
Technical Field
The utility model belongs to the technical field of air conditioner communication, concretely relates to air conditioner gateway.
Background
In the air-conditioning industry at present, a dealer often uses a controller of a third party manufacturer when providing a man-machine interaction scheme, and the following online scenes often appear: the upper computer (man-machine interaction) uses a third-party controller, the third-party controller is connected with an air-conditioning gateway, and the air-conditioning gateway is connected with air-conditioning equipment of an air-conditioning manufacturer; in this way, a man-machine interaction system of the air conditioner is constructed.
The third-party controller and the air-conditioning gateway both need additional power supplies, and the introduction of the third-party controller and the air-conditioning gateway increases the difficulty in installation and debugging of the air-conditioning system; moreover, the types of the controllers of the third party are various, and installation personnel are often not familiar with the product and improper operation or misconnection leads to damage of the product in the installation stage, and especially the case that the controllers of the third party and the air-conditioning gateway are burnt out due to power supply short circuit is the most common.
In view of this, the present invention is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model provides an to foretell technical problem, provide an air conditioner gateway.
In order to achieve the above object, the utility model discloses a technical scheme be:
an air conditioning gateway, comprising:
the first power supply conditioning circuit is connected with a power supply end of the indoor unit of the air conditioner;
the input end of the power supply output circuit is connected with the first power supply conditioning circuit, and the output end of the power supply output circuit is connected with the power supply input end of the third-party controller;
the control device is electrically connected with the power output circuit;
the power output circuit includes:
the power supply output end is positioned at the output end of the power supply output circuit and is electrically connected with the output end of the first power supply conditioning circuit;
the switching circuit is connected with the third-party controller through the power supply output end and is used for controlling whether the power supply output circuit supplies power to the third-party controller or not;
the drive protection circuit is connected with the switch circuit and receives an enabling signal of the control device to control the on-off of the switch circuit;
and the voltage division detection circuit is connected with the power output end and is connected with the control device through a voltage detection end.
In some embodiments of the utility model, the partial pressure detection circuitry includes first resistance and the second resistance of establishing ties with first resistance, and the one end that second resistance was kept away from to first resistance is connected with power output end, and voltage detection port is connected to the intermediate point of first resistance and second resistance, and the one end ground connection that first resistance was kept away from to the second resistance.
The utility model discloses an in some embodiments, switching circuit sets up to N channel MOS pipe, and drive protection circuit is connected to the first port of N channel MOS pipe, and power output end, the second port ground connection of N channel MOS pipe are connected to the third port of N channel MOS pipe.
In some embodiments of the utility model, the drive protection circuit includes third resistance and fourth resistance, third resistance and fourth resistance series connection, and the one end that fourth resistance was kept away from to the third resistance is connected with the controlling means, and the intermediate point of third resistance and fourth resistance is connected with the first port of N channel MOS pipe, and the one end ground connection that third resistance was kept away from to the fourth resistance.
The utility model discloses an in some embodiments, switching circuit can also set up to P channel MOS pipe, and the drive protection circuit is connected to the first port of P channel MOS pipe, the second port and the first power conditioning circuit electric connection of P channel MOS pipe, the third port and the power output end electric connection of P channel MOS pipe.
The utility model discloses an in some embodiments, partial pressure detection circuitry includes first resistance and the second resistance of establishing ties with first resistance, and the one end that the second resistance was kept away from to first resistance is connected with the intermediate point of the third port of power output end and P channel MOS pipe, and power output end ground connection, the intermediate point connection voltage detection port of first resistance and second resistance, and the one end connection control device of first resistance is kept away from to the second resistance.
In some embodiments of the present invention, the driving protection circuit comprises a switching transistor, a third resistor and a fourth resistor, wherein,
a first port of the switching triode is connected with the control device, a second port of the switching triode is connected with the third resistor and the fourth resistor in series, and a third port of the switching triode is grounded;
and two ends of the fourth resistor are electrically connected with the first port and the second port of the P-channel MOS tube respectively.
In some embodiments of the present invention, the air conditioner further comprises a second power conditioning circuit electrically connected to the first power conditioning circuit for supplying power to the air conditioner gateway itself.
In some embodiments of the present invention, the air conditioning gateway further comprises:
the first communication terminal is connected with the communication terminal of the indoor unit of the air conditioner through a first differential communication line, and the first differential communication line transmits air conditioner protocol messages;
and the second communication terminal is connected with the communication terminal of the third-party controller through a second differential communication line, and the controller protocol message is transmitted on the second differential communication line.
In some embodiments of the present invention, the controller further comprises an alarm component electrically connected to the control device, wherein the alarm component sends an alarm signal when the third-party controller is short-circuited.
In some embodiments of the present invention, the equivalent resistance of the third-party controllers such as the third-party controller is R Ω, and the values of the resistance R1 and the resistance R2 satisfy the first preset condition. The first preset condition is that the values of R1 and R2 are still equal to or different from the equivalent resistance R omega of the third-party controller connected with CN1 by a set magnitude.
The utility model provides an air conditioner gateway, this air conditioner gateway have power output circuit, and this power output circuit can be when self air conditioner gateway carries out the power supply, can also be the power supply of third side controller to outer power supply, and simultaneously, power output circuit still has short-circuit protection function, detects voltage through the partial pressure detection circuitry to break-make through drive protection circuit control switch circuit, thereby whether control power output circuit supplies power to third side controller. The problem of short circuit burnout caused by installation misoperation can be avoided, and the air conditioner gateway and the third-party controller are protected to the greatest extent.
Drawings
FIG. 1 is a first block diagram of connection between an air conditioner gateway and a third-party controller and an air conditioner indoor unit;
FIG. 2 is a second block diagram of the connection between the air conditioning gateway and the third controller and the air conditioning indoor unit;
fig. 3 is a circuit schematic diagram of a power supply output circuit in embodiment 1;
FIG. 4 is a third block diagram of the connection of the air conditioning gateway with a third controller and an air conditioning indoor unit;
FIG. 5 is a block diagram of the connection between the air conditioning gateway and the third controller and the indoor unit of the air conditioner;
FIG. 6 is a block diagram of the connection between the air conditioning gateway and the third controller and the air conditioning indoor unit;
FIG. 7 is a sixth block diagram of the connection of the air conditioning gateway with the third controller and the air conditioning indoor unit;
fig. 8 is a flow chart of the operation principle of the power output circuit in embodiment 1;
fig. 9 is a circuit schematic diagram of a power supply output circuit in embodiment 2;
fig. 10 is a flowchart of the operation principle of the power output circuit in embodiment 2.
In the above figures:
an air-conditioning gateway 1; an indoor air-conditioning unit 2; a third party controller 3;
a first power supply conditioning circuit 11; a power supply output circuit 12; a control device 13; a single chip microcomputer 131;
a second power conditioning circuit 14; an alarm part 15; a first communication terminal 16; a second communication terminal 17;
a third communication terminal 21; a fourth communication terminal 31; a first differential communication line 4;
a fourth differential communication line 5; a power supply output terminal 6;
a voltage division detection circuit 121; a switching circuit 122; the drive protection circuit 123;
Detailed Description
The present invention is further described below in conjunction with specific embodiments so that those skilled in the art may better understand the present invention and can implement the present invention, but the scope of the present invention is not limited to the scope described in the detailed description. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
It should be noted that the description relating to "first", "second", etc. in the present invention is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Example 1:
the embodiment provides an air-conditioning gateway 1, and with reference to fig. 1, the air-conditioning gateway includes a first power conditioning circuit 11, a power output circuit 12 and a control device 13, wherein the first power conditioning circuit 11 is connected with a power supply end of an air-conditioning indoor unit 2 and is used for taking power from the air-conditioning indoor unit 2 to generate a 12V power supply; the input end of the power output circuit 12 is connected with the first power conditioning circuit 11, the output end of the power output circuit 12 is connected with the power input end of the third-party controller 3, and the power output circuit 12 can supply power for the third-party controller 3; the control device 13 is electrically connected to the power output circuit 12, and is configured to control the operating state of the power output circuit 12.
Further, referring to fig. 2, the power output circuit 12 includes a power output terminal 6, a switch circuit 122, a driving protection circuit 123 and a divided voltage detection circuit 121, wherein:
the power output end 6 is located at the output end of the power output circuit 12, and the power output end 6 is electrically connected with the output end of the first power conditioning circuit 11; the switch circuit 122 is connected with the third-party controller 3 through the power output end 6, and is used for controlling whether the power output circuit 12 supplies power to the third-party controller 3; the driving protection circuit 123 is connected with the switch circuit 122, and the driving protection circuit 123 receives an enable signal of the control device 13 to control the on-off of the switch circuit 122; the voltage division detection circuit 121 is connected to the power output terminal 6 and is connected to the control device 13 through a voltage detection terminal.
Through the aforesaid setting for the man-machine interaction system of air conditioner gets the electricity convenient, can provide the power and have the function of power short-circuit protection for third party manufacturer's host computer, can simplify on-the-spot wiring, improves the system robustness, and the emergence probability of the third party controller 3 that the at utmost reduction installation site maloperation leads to burns out, and the utility model discloses a circuit improvement combines voltage detection value's judgement to realize power output circuit 12's the protection that opens circuit simultaneously, realizes important protect function with the low cost.
Further, referring to fig. 3, the voltage division detection circuit 121 includes a first resistor R1 and a second resistor R2 connected in series with the first resistor R1, wherein one end of the first resistor R1 far from the second resistor R2 is connected to the power output terminal 6, a middle point between the first resistor R1 and the second resistor R2 is connected to the voltage detection port, and one end of the second resistor R2 far from the first resistor R1 is grounded.
It should be noted that the third-party controller 3 connected to the power output terminal 6 may be equivalent to a port network, and the equivalent resistance is represented as R Ω. The first resistor R1 and the second resistor R2 are high-precision chip resistors, values of the first resistor R1 and the second resistor R2 are close to or the same in magnitude, and the first resistor R1 and the second resistor R2 are arranged to form a voltage division loop with R omega, so that when the third-party controller 3 is short-circuited, the voltage detected by the second resistor R2 can be timely known to protect the circuit.
Further, the switch circuit 122 is configured as an N-channel MOS transistor Q1, a first port of the N-channel MOS transistor Q1 is connected to the driving protection circuit 123, a third port of the N-channel MOS transistor Q1 is connected to the power output terminal 6, and a second port of the N-channel MOS transistor Q1 is grounded.
Further, an N-channel MOS transistor Q1 may be configured as an enhanced N-channel MOS transistor, and whether external power is supplied may be implemented by controlling on or off of the enhanced N-channel MOS transistor.
Further, the driving protection circuit 123 includes a third resistor R3 and a fourth resistor R4, the third resistor R3 and the fourth resistor R4 are connected in series, one end of the third resistor R3 away from the fourth resistor R4 is connected to the control device 13, an intermediate point between the third resistor R3 and the fourth resistor R4 is connected to the first port of the N-channel MOS transistor Q1, and one end of the fourth resistor R4 away from the third resistor R3 is grounded.
It should be noted that the third resistor R3 and the fourth resistor R4 are general precision chip resistors, and are used for safety driving and electrostatic protection of MOS transistors.
Specifically, referring to fig. 3, CN1 is a power output terminal 6 for connecting to a power input terminal of the third-party controller 3; +12V from the first power conditioning circuit 11; the Voltage _ AD is a Voltage detection end, connected to an AD conversion port of the control device 13, and used for converting an analog Voltage into a digital value and detecting a Voltage value on the resistor R2; the PowerOut _ EN is an output power supply enabling end, is connected to a common IO port of the control device 13, and is used for controlling on and off of the N-channel MOS transistor Q1.
Further, the control device 13 may be configured as a single chip 131, a microcontroller, an fpga (field Programmable Gate array), a gpu (graphical Processing unit), or a DSP chip (digital single processor). The control device 13 can be powered by the internal circuitry of the air conditioning gateway 1 without the need for an additional power supply. Meanwhile, the voltage value detected by the voltage detection end can be acquired according to the control device 13, and whether the third-party controller 3 is in a short-circuit state at the moment is judged according to the voltage value, if the third-party controller is in the short-circuit state, the control device 13 outputs an electric signal to the driving protection circuit 123, the driving protection circuit 123 controls the switch circuit 122 to be switched off, so that the power output circuit 12 stops supplying power to the third-party controller 3, the function of a protection circuit is achieved, meanwhile, the control circuit detects the voltage value at regular time, when the third-party controller is in a normal state, the control device 13 outputs a corresponding electric signal to the driving protection circuit 123, and the switch circuit 122 is controlled to be switched on by the driving protection circuit 123, so that the power output circuit 12 supplies power to the third-party controller 3.
Further, referring to fig. 4, the schematic structural diagram of the air conditioning gateway 1 when the control device 13 is the single chip 131. An AD conversion port of the single chip microcomputer 131 is connected with the voltage detection end, and an IO port of the single chip microcomputer 131 is connected with the output power supply enabling end.
Further, referring to fig. 5, the air conditioning gateway 1 further includes a first communication terminal 16 and a second communication terminal 17, wherein:
the first communication terminal 16 is connected with a third communication terminal 21 of the indoor unit 2 of the air conditioner through a first differential communication line 4, a differential signal is transmitted on the first differential communication line 4, and the transmitted content is an air conditioner protocol message; and a second communication terminal 17 connected to the fourth communication terminal 31 of the third-party controller 3 via a second differential communication line 5, wherein the second differential communication line 5 transmits a differential signal, and the transmitted content is a controller protocol message.
Through the arrangement, the transmission distance can be increased and the transmission reliability can be improved by using the differential signal transmission telegraph, and the problem of common ground of signal transmission among various devices does not need to be considered. Protocol conversion between the indoor air conditioner and the third-party controller 3 can be realized.
Further, referring to fig. 6, the controller further includes an alarm component 15 electrically connected to the control device 13, wherein the alarm component 15 sends an alarm signal when the third-party controller 3 is short-circuited.
Further, referring to fig. 7, a second power conditioning circuit 14 is further included, and is connected to the first power conditioning circuit 11, and is configured to generate a 5V power to supply power to the air conditioning gateway 1 itself.
Meanwhile, the power output end 6 is connected with the power input end of the third-party controller 3 through a second power line, and the first power conditioning circuit 11 is connected with the power end of the indoor unit 2 of the air conditioner through a first power line.
Referring to fig. 8, the principle of the circuit implementation in the present embodiment is described by taking the single chip 131 as an example:
a first power supply conditioning circuit 11 in the air-conditioning gateway 1 generates a 12V power supply, and a 12V positive electrode and a drain electrode of a MOS tube Q1 are connected with a terminal CN1 and used for outputting power supply to the outside; the first resistor R1, the second resistor R2 and the equivalent resistor R omega of the third controller 3 form a voltage detection loop; when the air conditioner gateway 1 is powered on and initialized, the single chip microcomputer 131 firstly turns off the MOS transistor Q1, then the 12V power supply, the third-party controller 3 and the MOS transistor Q1 cannot form a conduction loop, and the third-party controller 3 cannot be powered; then the single chip 131 detects the voltage value of the resistor R2,
if the Voltage value detected by the Voltage _ AD is far less than the Voltage value detected by the Voltage _ AD
And is arranged at
Nearby, it means that the third party controller 3 is in a normal wiring state, the third party controller 3 connected with the CN1 terminal is not short-circuited, at this time, the single chip 131 controls the Q1 to be turned on to enable the CN1 terminal to normally supply power to the outside,
if the Voltage value detected by the Voltage _ AD is very close to the Voltage value detected by the Voltage _ AD
When the equivalent resistance value of the third-party controller 3 connected with the CN1 terminal is close to 0 and a short circuit occurs, the single chip 131 controls the Q1 to be kept off, so that the CN1 does not supply power to the outside, the air-conditioning gateway 1 and the third-party controller 3 are prevented from being burned down due to abnormal short circuit of the third-party controller 3, and the single chip 131 gives a fault alarm through the indicator light;
and then the singlechip 131 detects the voltage value of the R2 at regular time, the short circuit of the CN1 terminal is judged circularly, once the short circuit state of the CN1 terminal disappears is judged, the Q1 is controlled to be switched on to start external power supply, and otherwise, the Q1 is kept to be switched off.
Protection principle when CN1 is normally powered externally and external short circuit suddenly occurs: because the 12V power supply used by the air-conditioning gateway 1 is the same as the 12V power supply supplying power to the outside, when the third-party controller 3 is short-circuited, the 12V power supply can be immediately dropped, so that the 5V power supply is dropped, the single chip microcomputer 131 is powered off, the high level for controlling the on of the MOS transistor Q1 disappears, the MOS transistor Q1 is automatically turned off, once the MOS transistor Q1 is turned off, the 12V power supply is recovered to be normal, then the single chip microcomputer 131 is powered on again to enter the reset restart, and the detection flow is executed on the short-circuit condition at the CN1 again in the initialization stage, so as to achieve the effect of short-circuit protection.
Example 2
Compared with the above embodiments, the present embodiment further improves the power output circuit 12, and proposes a power output circuit 12 with a different structure.
Further, referring to fig. 9, the switch circuit 122 may further be configured as a P-channel MOS transistor Q1, a first port of the P-channel MOS transistor Q1 is connected to the driving protection circuit 123, a second port of the P-channel MOS transistor Q1 is electrically connected to the first power conditioning circuit 11, and a third port of the P-channel MOS transistor Q1 is electrically connected to the power output terminal 6.
It should be noted that the P-channel MOS transistor Q1 is configured as an enhancement-type P-channel MOS transistor.
Furthermore, the voltage division detection circuit 121 includes a first resistor R1 and a second resistor R2 connected in series with the first resistor R1, wherein an end of the first resistor R1 away from the second resistor R2 is connected to a middle point of the power output terminal 6 and the third port of the P-channel MOS transistor Q1, the power output terminal 6 is grounded, a middle point of the first resistor R1 and the second resistor R2 is connected to the voltage detection port, and an end of the second resistor R2 away from the first resistor R1 is connected to the control device 13.
It should be noted that the third-party controller 3 (equivalent resistor R Ω) connected to the CN1 through the first resistor R1 and the second resistor R2 forms a voltage division detection loop for detecting whether the third-party controller 3 is short-circuited, and the values of R1 and R2 are still equivalent to the value of the equivalent resistor R Ω of the third-party controller 3 connected to CN 1.
Further, the driving protection circuit includes a switching transistor Q2, a third resistor R3, and a fourth resistor R4, wherein,
a first port of the switching triode Q2 is connected with the control device 13, a second port of the switching triode Q2 is connected with the third resistor R3 and the fourth resistor R4 in series, and a third port of the switching triode Q2 is grounded;
two ends of the fourth resistor R4 are electrically connected to the first port and the second port of the P-channel MOS transistor Q1, respectively.
The third resistor R3 and the fourth resistor R4 are used for safely driving the P-channel MOS tube Q1 to be switched on and off.
Further, a General _ IO port is further provided, and the General _ IO port is connected to a common IO port of the single chip 131 and is used for outputting high and low levels to protect the control device 13; the PowerOut _ EN is a power output enable control port and is connected with a common IO port of the singlechip 131; the Voltage _ AD is connected with an analog-to-digital conversion pin of the single chip 131 and used for detecting a Voltage value;
referring to fig. 10, the principle of the power output circuit 12 in this embodiment will be described by taking the circuit and the single chip 131 in fig. 9 as an example:
in the power-on initialization stage of the air conditioner gateway 1, firstly, controlling the PowerOut _ EN to be at a low level, and turning off a P-channel MOS tube Q1, thereby forbidding 12V power supply output; then, controlling General _ IO to output a high level (+5V) to enable the first resistor R1, the second resistor R2 and the equivalent resistor R omega to form a voltage division; and starting to detect the Voltage value of the Voltage _ AD port.
If the detected voltage value is close to
The third-party controller 3 connected with the CN1 is normal, and no short circuit occurs; then, the General _ IO output low level (0V) is controlled, and then the PowerOut _ EN output high level is controlled, so that the 12V power supply output is enabled, therefore, the purpose of pulling down the General _ IO level at first is to prevent the Voltage _ AD point of the P-channel MOS transistor Q1 from generating a Voltage higher than 5V after the P-channel MOS transistor Q1 is turned on, and damaging the single chip microcomputer 131;
if the Voltage value detected at the Voltage _ AD port is far smaller than the Voltage value detected at the Voltage _ AD port
And is very close to
The short circuit occurs at the terminal CN1, at this time, the singlechip 131 keeps the PowerOut _ EN at a low level, the power supply output is forbidden, and meanwhile, the indicator lamp flashes to alarm; and then, the program detects the Voltage value at the Voltage _ AD port in a timing cycle, and once the Voltage value is detected to recover to the normal range, the P-channel MOS tube Q1 is controlled to be conducted so as to enable the 12V power output, otherwise, the power output forbidden state is kept.
Protection principle when CN1 is normally powered externally and external short circuit suddenly occurs: because the 12V power supply used by the air-conditioning gateway 1 is the same as the 12V power supply supplying power to the outside, when the third-party controller 3 is short-circuited, the 12V power supply can be immediately dropped, so that the 5V power supply is dropped, the power failure of the single chip microcomputer 131 can be realized, the high level of the P-channel MOS transistor Q1 is controlled to disappear, the P-channel MOS transistor Q1 is automatically turned off, once the P-channel MOS transistor Q1 is turned off, the 12V power supply is recovered to be normal, then the single chip microcomputer 131 is powered again to enter the reset restart, and the detection process is executed on the short-circuit condition at the CN1 again in the initialization stage, so as to achieve the effect of short-circuit protection.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model provides an air-conditioning gateway 1, which comprises a first power conditioning circuit 11, a power output circuit 12 and a control device 13, wherein the first power conditioning circuit 11 is connected with the power end of an indoor unit 2 of an air conditioner; the input end of the power output circuit 12 is connected with the first power conditioning circuit 11, and the output end of the power output circuit is connected with the power input end of the third-party controller 3; the control device 13 is electrically connected with the power output circuit 12; the power output circuit 12 includes a switch circuit 122, a driving protection circuit 123 and a voltage division detection circuit 121, wherein the switch circuit 122 is connected to the third-party controller 3 through a power output terminal 6, and the power output terminal 6 is electrically connected to the output terminal of the first power conditioning circuit 11; the driving protection circuit 123 is connected with the switch circuit 122, and receives an enable signal of the control device 13 to control the on-off of the switch circuit 122; the voltage division detection circuit 121 is connected to the power output terminal 6 and is connected to the control device 13 through a voltage detection terminal. This power output circuit 12 can get the electricity from the power end of air conditioning indoor set 2, not only can realize that the protocol conversion between indoor air conditioner and the third party controller 3 can be for the power supply of third party controller 3, save the power adapter of third party controller, and simultaneously, power output circuit 12 still has the short-circuit protection function to third party controller 3 and air conditioner gateway 1 itself, detect voltage through partial pressure detection circuitry 121, and through the break-make of drive protection circuitry 123 control switch circuit 122, thereby control power output circuit 12 whether to the power supply of third party controller 3. The problem of short circuit burnout caused by installation misoperation can be avoided, the air conditioner gateway 1 and the third-party controller 3 are protected to the greatest extent, wiring complexity of an installation site is simplified, and robustness of a control system is improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. An air conditioning gateway, comprising:
the first power supply conditioning circuit is connected with a power supply end of the indoor unit of the air conditioner;
the input end of the power supply output circuit is connected with the first power supply conditioning circuit, and the output end of the power supply output circuit is connected with the power supply input end of the third-party controller;
the control device is electrically connected with the power output circuit;
the power output circuit includes:
the power supply output end is positioned at the output end of the power supply output circuit and is electrically connected with the output end of the first power supply conditioning circuit;
the switch circuit is connected with the third-party controller through the power supply output end and is used for controlling whether the power supply output circuit supplies power to the third-party controller;
the driving protection circuit is connected with the switch circuit and receives an enabling signal of the control device to control the on-off of the switch circuit;
and the voltage division detection circuit is connected with the power output end and is connected with the control device through a voltage detection end.
2. The air conditioning gateway according to claim 1, wherein the voltage division detection circuit includes a first resistor and a second resistor connected in series with the first resistor, an end of the first resistor remote from the second resistor is connected to the power output terminal, a middle point of the first resistor and the second resistor is connected to the voltage detection port, and an end of the second resistor remote from the first resistor is grounded.
3. The air conditioning gateway according to claim 1, wherein the switching circuit is configured as an N-channel MOS transistor, a first port of the N-channel MOS transistor is connected to the driving protection circuit, a third port of the N-channel MOS transistor is connected to the power output terminal, and a second port of the N-channel MOS transistor is grounded.
4. The air conditioning gateway according to claim 3, wherein the driving protection circuit includes a third resistor and a fourth resistor, the third resistor and the fourth resistor are connected in series, one end of the third resistor, which is far away from the fourth resistor, is connected to the control device, a middle point of the third resistor and the fourth resistor is connected to the first port of the N-channel MOS transistor, and one end of the fourth resistor, which is far away from the third resistor, is grounded.
5. The air conditioning gateway according to claim 1, wherein the switching circuit is further configured as a P-channel MOS transistor, a first port of the P-channel MOS transistor is connected to the driving protection circuit, a second port of the P-channel MOS transistor is electrically connected to the first power conditioning circuit, and a third port of the P-channel MOS transistor is electrically connected to the power output terminal.
6. The air conditioning gateway according to claim 5, wherein the voltage division detection circuit includes a first resistor and a second resistor connected in series with the first resistor, an end of the first resistor remote from the second resistor is connected to a midpoint between the power output terminal and the third port of the P-channel MOS transistor, the power output terminal is grounded, a midpoint between the first resistor and the second resistor is connected to the voltage detection port, and an end of the second resistor remote from the first resistor is connected to the control device.
7. The air conditioning gateway of claim 5, wherein the driving protection circuit comprises a switching transistor, a third resistor and a fourth resistor, wherein,
a first port of the switching triode is connected with the control device, a second port of the switching triode is connected with the third resistor and the fourth resistor in series, and a third port of the switching triode is grounded;
and two ends of the fourth resistor are respectively and electrically connected with the first port and the second port of the P-channel MOS tube.
8. The air conditioning gateway of claim 1, further comprising a second power conditioning circuit electrically connected to the first power conditioning circuit for powering the air conditioning gateway itself.
9. The air conditioning gateway of claim 1, further comprising:
the first communication terminal is connected with the communication terminal of the indoor unit of the air conditioner through a first differential communication line, and the first differential communication line transmits air conditioner protocol messages;
and the second communication terminal is connected with the communication terminal of the third-party controller through a second differential communication line, and a controller protocol message is transmitted on the second differential communication line.
10. The air conditioning gateway of claim 1, further comprising an alarm component electrically connected to the control device, wherein the alarm component sends an alarm signal when the third-party controller is short-circuited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221005883.1U CN217082870U (en) | 2022-04-28 | 2022-04-28 | Air-conditioning gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221005883.1U CN217082870U (en) | 2022-04-28 | 2022-04-28 | Air-conditioning gateway |
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