CN111237986B - Air conditioner display device and air conditioner - Google Patents
Air conditioner display device and air conditioner Download PDFInfo
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- CN111237986B CN111237986B CN202010033440.2A CN202010033440A CN111237986B CN 111237986 B CN111237986 B CN 111237986B CN 202010033440 A CN202010033440 A CN 202010033440A CN 111237986 B CN111237986 B CN 111237986B
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- display module
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- driving chip
- air conditioner
- main control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/52—Indication arrangements, e.g. displays
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The invention provides an air conditioner display device and an air conditioner, comprising: a driving chip IC1 and a display module controlled by the driving chip IC 1; the main control chip and the drive chip IC1 are used for being in communication connection with the main control chip, and the drive chip is used for receiving a control instruction sent by the main control chip; the driving chip IC1 is connected with the display module. Control instruction is sent to the driving chip through the main control chip, rethread driving chip IC1 drives the display module assembly, thereby make the main control chip only need a small number of communication group link driving chip IC1, just can realize the control to the display module assembly, do not need the lamp one-to-one among many communication group and the display module assembly to realize control, and the pin that occupies the main control chip reduces, can use low price's main control chip, reduce manufacturing cost, and based on asynchronous serial communication technique, the control of air conditioner internal unit to the display module assembly has been realized, the main control chip need not to use many communication groups to be connected with the display element, make group cost reduction.
Description
Technical Field
The invention relates to the field of air conditioners, in particular to an air conditioner display device and an air conditioner.
Background
In traditional air conditioner display device, all control through each display element of main control chip one-to-one connection, need occupy a plurality of pins of main control chip, and the price of the main control chip that has a plurality of pins is higher than other ordinary chips far away, and every display element all corresponds an electric line, it is relatively complicated to lead to the circuit between main control chip and the display element, and signal transmission through many circuits is unstable and manufacturing cost is high, consequently need for an air conditioner display device that signal transmission is stable and manufacturing cost is low urgently.
Disclosure of Invention
The invention mainly aims to provide an air conditioner display device and an air conditioner, and aims to solve the technical problem of high manufacturing cost caused by the fact that each display unit corresponds to one electrified circuit.
The application provides an air conditioner display device, includes:
the display module comprises a driving chip and a display module controlled by the driving chip;
the driving chip is used for being in communication connection with a main control chip and is used for receiving a control instruction sent by the main control chip;
the driving chip is connected with the display module and used for outputting a corresponding electric signal to the display module according to the control instruction.
Furthermore, the display module further comprises a PCB, and the display module is integrally designed on the PCB.
Furthermore, the display module comprises a first digital display module;
the first digital display module comprises seven first display units, the input ends of the seven first display units are connected with the seven key scanning input ends of the driving chip in a one-to-one correspondence mode, and the output ends of the seven first display units are connected with one or more keyboard scanning output ends of the plurality of keyboard scanning output ends of the driving chip.
Furthermore, the display module also comprises a second digital display module;
the second digital display module comprises seven second display units, the input ends of the seven second display units are correspondingly connected with the seven key scanning input ends of the driving chip one by one, and the output ends of the seven second display units are connected with one or more keyboard scanning output ends of a plurality of keyboard scanning output ends in the driving chip;
the output end of the second display unit and the output end of the first display unit are not connected with the same keyboard scanning output end.
Furthermore, the display module also comprises a state display module;
the state display module comprises a plurality of state display units, the input ends of the state display units are connected with the key scanning input ends of the driving chip in a one-to-one correspondence mode, and the output ends of the state display units are connected with the keyboard scanning output ends of the driving chip.
The driving circuit further comprises a power supply and a fifth capacitor, wherein the power supply is respectively connected with the first end of the fifth capacitor and the logic power supply end of the driving chip, the second end of the fifth capacitor is grounded, and the logic ground end of the driving chip is grounded.
The application also provides an air conditioner, including interface circuit and the aforesaid air conditioner display device, interface circuit is including being used for controlling air conditioner internal unit system the main control chip, the main control chip with driver chip communication connection.
Furthermore, the main control chip comprises five serial ports, wherein the first serial port is connected with the positive electrode of the power supply, the second serial port is used for connecting the remote controller, the third serial port is grounded, the fourth serial port is connected with the clock input end of the driving chip, and the fifth serial port is connected with the data input end of the driving chip.
The driving circuit further comprises a second resistor and a sixth resistor, wherein the fourth serial port is connected with the first end of the second resistor, the second end of the second resistor is connected with the clock input end of the driving chip, the first end of the sixth resistor is connected with the power supply, and the second end of the sixth resistor is connected with the first end of the second resistor.
Furthermore, the circuit also comprises a third capacitor, wherein the first end of the third capacitor is connected with the second end of the second resistor, and the second end of the third capacitor is grounded.
The invention has the beneficial effects that: control instruction is sent to the driving chip through the main control chip, rethread driving chip IC1 drives the display module assembly, thereby make the main control chip only need a small number of communication group link driving chip IC1, just can realize the control to the display module assembly, do not need the lamp one-to-one among many communication group and the display module assembly to realize control, and the pin that occupies the main control chip reduces, can use low price's main control chip, reduce manufacturing cost, and based on asynchronous serial communication technique, the control of air conditioner internal unit to the display module assembly has been realized, the main control chip need not to use many communication groups to be connected with the display element, make group cost reduction.
Drawings
Fig. 1 is a schematic structural diagram of an air conditioner display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an interface circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are 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, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 3, the present invention provides an air conditioner display device 1 including: a driving chip IC1 and a display module controlled by the driving chip IC 1; the main control chip IC2 and the drive chip IC1 are used for being in communication connection with the main control chip IC2, and the drive chip is used for receiving a control command sent by the main control chip IC 2; the driving chip IC1 is connected with the display module and used for outputting a corresponding electric signal to the display module according to the control instruction.
In this embodiment, send control command to driver chip through master control chip IC2, rethread driver chip IC1 drives the display module assembly, thereby make master control chip IC2 only need a small number of communication group link driver chip IC1, just can realize the control to the display module assembly, it realizes control not to need many communication group and the lamp one-to-one in the display module assembly, and the pin that occupies master control chip IC2 reduces, can use low price master control chip IC2, reduce manufacturing cost, and based on asynchronous serial port communication technique, the control of air conditioner indoor set to the display module assembly has been realized, master control chip IC2 need not to use many communication line groups to be connected with the display element, make line group cost reduction.
In this embodiment, still include the PCB board, the display module assembly integrated design is on the PCB board. Because traditional air conditioner, display module assembly and PCB board among its display device are separately set up, and traditional display module assembly circuit is more complicated, difficult with PCB board integrated design, and this application is controlled by driver chip IC 1's display module assembly and PCB board integrated design through the aforesaid, follow-up need not with display module assembly welding to PCB board, and integrated design also can not have the bad condition of welding to make off-the-shelf qualification rate can obtain promoting.
In this embodiment, the display module includes a first digital display module; the first digital display module comprises seven first display units, the input ends of the seven first display units are connected with the seven key scanning input ends of the driving chip IC1 in a one-to-one correspondence mode, and the output ends of the seven first display units are connected with one or more keyboard scanning output ends of a plurality of keyboard scanning output ends of the driving chip IC 1.
In this embodiment, referring to fig. 1 specifically, the model of the driving chip IC1 is TM1650, seven first display units (1A, 1B, 1C, 1D, 1E, 1F, 1G shown in fig. 1) are connected to seven different LED segment driving output terminals of the driving chip IC1 (i.e. corresponding to pins a/K11, B/K12, C/K13, D/K14, E/K15, F/K16, and G/K17 on the driving chip IC 1), the output terminals of the first display units are connected to the same keyboard scanning output terminal, or connected to multiple keyboard scanning output terminals, in order to reduce the usage of ports of the driving chip IC1 as much as possible, all the display units in the same group are generally corresponding to one keyboard scanning output terminal, the seven first display units are placed in a shape of numeral 8, and then the different LED segment driving output terminals are used to control on and off of different first display units, furthermore, different display conditions such as "0 to 9" and a symbol "-" can be displayed, specifically determined by the display conditions that can be realized by seven first display units, in addition, all the first display units in fig. 1 are connected to the same keyboard scanning output terminal, in another embodiment, a plurality of the same keyboard scanning output terminals can also be connected, that is, only a high level needs to be output at the LED segment driving output terminal, and a low level needs to be output at the keyboard scanning output terminal.
In this embodiment, the display module further includes a second digital display module; the second digital display module comprises seven second display units (2A, 2B, 2C, 2D, 2E, 2F and 2G shown in fig. 1), wherein the input ends of the seven second display units are correspondingly connected with the seven key scanning input ends of the driving chip one by one, and the output ends of the seven second display units are connected with one or more keyboard scanning output ends of a plurality of keyboard scanning output ends in the driving chip; the output end of the second display unit is not connected with the same keyboard scanning output end as the output end of the first display unit. Referring to fig. 1, the second display units are connected in parallel with the first display units in a one-to-one correspondence manner (for example, as shown in fig. 1, one LED segment driving output terminal is connected to one first display unit and one second display unit, for example, a/K11 pin is connected to the first display unit 1A and the second display unit 2A, respectively), the first display module and the second display module correspond to different keyboard scanning output terminals, respectively, and the output terminal of the second display unit and the output terminal of the first display unit are not connected to the same keyboard scanning output terminal, that is, in the case of inputting ac power, according to the above connection manner, the on/off of the display units of any combination of seven first display units and seven second display units can be realized, and further different combinations of numbers or related symbols can be displayed, the interval of numbers can be [ -9 through the first display module and the second display module, 99], it should be understood that if a third digital display module and even a fourth digital display module are provided, the corresponding third display unit and/or fourth display unit are connected in parallel with the second display unit and the first display unit in a one-to-one correspondence, that is, both are connected to the same key scanning input terminal.
In this implementation, the display module further comprises a status display module; the state display module comprises a plurality of state display units, the input ends of the state display units are connected with the key scanning input ends of the driving chip IC1 in a one-to-one correspondence mode, and the output ends of the state display units are connected with the keyboard scanning output ends of the driving chip IC 1. The state display unit is also in one-to-one correspondence with the first display unit and is connected in parallel, and is used for displaying signals transmitted by the receiving interface circuit to display different state information, such as: the WIFI connection condition, the HEAT (heating mode of the air conditioner) state display and the ECO (intelligent energy saving mode) state display.
In this embodiment, in order to ensure that the display unit in the circuit is damaged and short-circuited, a current-limiting resistor (R8, R9, R10, R11, R12, R13, R14 in fig. 1) may be connected in series between the driving output terminal of each LED segment and the display unit to ensure the safety of the circuit.
In this embodiment, the driving circuit further includes a power supply and a fifth capacitor C5, the power supply is respectively connected to the first end of the fifth capacitor C5 and the logic power terminal of the driving chip IC1, the second end of the fifth capacitor C5 is grounded, and the logic ground terminal of the driving chip IC1 is grounded.
In this embodiment, a second electrolytic capacitor E2 is further provided, the positive terminal of the second electrolytic capacitor E2 is connected to the logic power supply terminal, and the second terminal is grounded, wherein the second electrolytic capacitor E2 and the fifth capacitor C5 are filter capacitors of the power supply, and are used to maintain the stability of the power supply, so that the voltage variation thereof is not too large, and the power consumption safety at the logic power supply terminal of the driver chip IC1 is ensured.
The invention also provides an air conditioner, which comprises an interface circuit and the air conditioner display device 1, wherein the interface circuit comprises a main control chip IC2 for controlling the air conditioner internal unit system 2, and the main control chip IC2 is in communication connection with the driving chip IC 1.
In this embodiment, the interface circuit includes a main control chip IC2, and the main control chip IC2 includes five serial ports, wherein the first serial port is connected to the positive pole of the power supply, the second serial port is used for connecting the remote controller, the third serial port is grounded, the fourth serial port is connected to the clock input terminal of the driver chip IC1, and the fifth serial port is connected to the data input terminal of the driver chip IC 1. Can carry out signal connection with the remote controller through the second serial ports, realize remote input signal, rethread fourth serial ports is connected with driver chip IC 1's clock input end SDA and the data input end SLC of fifth serial ports and driver chip IC1 to can realize transmitting control signal to driver chip IC1 on, also can accept the information of feeding back on the driver chip IC 1.
Referring to fig. 2, in this embodiment, the interface circuit further includes a second resistor R2 and a sixth resistor R6, the fourth serial port is connected to the first end of the second resistor R2, the second end of the second resistor R2 is connected to the clock input SDA of the driver chip IC1, the first end of the sixth resistor R6 is connected to the power supply, and the second end of the sixth resistor R6 is connected to the first end of the second resistor R2. The sixth resistor R6 and the second resistor R2 both play a role of current limiting protection, wherein the sixth resistor R6 is used for limiting the current of the power source connected to the upper end, and the second resistor R2 is connected in series between the fourth serial port and the clock input terminal SDA of the driver IC1 and is used for limiting the current of the power source connected to the upper end and the current connected to the fourth serial port.
In this embodiment, the third capacitor C3 is further included, the first end of the third capacitor C3 is connected to the second end of the second resistor R2, and the second end of the third capacitor C3 is grounded. The third capacitor C3 is provided to filter out the high frequency wave in the signal transmitted to the driver IC1 from the fourth serial port, so as to ensure the stability of the transmission of the control signal.
In this embodiment, the driving circuit may further include a seventh resistor R7, a fifth resistor R5, and a fourth capacitor C4, wherein a first end of the seventh resistor R7 is connected to the power supply, a second end of the seventh resistor R7 is connected to the fifth serial port and a first end of the fifth resistor R5, the fifth resistor R5 is connected to the data input end of the driving chip IC1 and the first end of the fourth capacitor C4, and a second end of the fourth capacitor C4 is grounded, where the seventh resistor R7 and the fifth resistor R5 are used for current limiting and respectively correspond to the sixth resistor R6 and the second resistor R2, which is not described herein again, and functions of the fourth capacitor C4 and the third capacitor C3 are also consistent, so as to reduce high-frequency waves in the driving signal and ensure stability of transmission of the control signal.
The invention has the beneficial effects that: control instructions are sent to the driving chip through the main control chip IC2, then the display module is driven through the driving chip IC1, so that the main control chip IC2 only needs a few communication line groups to be connected with the driving chip IC1, the control of the display module can be realized, the control is realized without the one-to-one correspondence of a plurality of communication line groups and lamps in the display module, the pins occupying the main control chip IC2 are reduced, the main control chip IC2 with low price can be used, the manufacturing cost is reduced, the control of an air conditioner indoor unit on the display module is realized based on an asynchronous serial port communication technology, the main control chip IC2 does not need to use a plurality of communication line groups to be connected with the display unit, and the line group cost is reduced.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (7)
1. An air conditioner display device, comprising:
the display module comprises a driving chip and a display module controlled by the driving chip;
the driving chip is used for being in communication connection with a main control chip and is used for receiving a control instruction sent by the main control chip;
the driving chip is connected with the display module and used for outputting a corresponding electric signal to the display module according to the control instruction;
the air conditioner display device further comprises a power supply, a fifth capacitor and a second electrolytic capacitor, wherein the power supply is respectively connected with the first end of the fifth capacitor and the logic power end of the driving chip, the second end of the fifth capacitor is grounded, and the logic power end of the driving chip is grounded; the positive end of the second electrolytic capacitor is connected with a logic power supply end, the second end of the second electrolytic capacitor is grounded, and the second electrolytic capacitor and the fifth capacitor are filter capacitors of the power supply;
the display module comprises a first digital display module;
the first digital display module comprises seven first display units, the input ends of the seven first display units are correspondingly connected with the seven key scanning input ends of the driving chip one by one, and the output ends of the seven first display units are connected with one or more keyboard scanning output ends of a plurality of keyboard scanning output ends of the driving chip;
the display module also comprises a second digital display module;
the second digital display module comprises seven second display units, the input ends of the seven second display units are correspondingly connected with the seven key scanning input ends of the driving chip one by one, and the output ends of the seven second display units are connected with one or more keyboard scanning output ends of a plurality of keyboard scanning output ends in the driving chip;
the output end of the second display unit and the output end of the first display unit are not connected with the same keyboard scanning output end.
2. The air conditioner display device as recited in claim 1 further comprising a PCB board, wherein said display module is integrally designed on said PCB board.
3. The air conditioning display device of claim 1, wherein the display module further comprises a status display module;
the state display module comprises a plurality of state display units, the input ends of the state display units are connected with the key scanning input ends of the driving chip in a one-to-one correspondence mode, and the output ends of the state display units are connected with the keyboard scanning output ends of the driving chip.
4. An air conditioner, characterized by comprising an interface circuit and the air conditioner display device of any one of claims 1-3, wherein the interface circuit comprises the main control chip for controlling an air conditioner internal unit system, and the main control chip is in communication connection with the driving chip.
5. The air conditioner according to claim 4, wherein the interface circuit comprises a main control chip, the main control chip comprises five serial ports, wherein the first serial port is connected with a power supply anode, the second serial port is used for connecting a remote controller, the third serial port is grounded, the fourth serial port is connected with a clock input end of the driving chip, and the fifth serial port is connected with a data input end of the driving chip.
6. The air conditioner according to claim 5, further comprising a second resistor and a sixth resistor, wherein the fourth serial port is connected to a first end of the second resistor, a second end of the second resistor is connected to the clock input terminal of the driver chip, a first end of the sixth resistor is connected to a power supply, and a second end of the sixth resistor is connected to the first end of the second resistor.
7. The air conditioner according to claim 6, further comprising a third capacitor, wherein a first terminal of the third capacitor is connected to a second terminal of the second resistor, and a second terminal of the third capacitor is grounded.
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| CN202010033440.2A CN111237986B (en) | 2020-01-13 | 2020-01-13 | Air conditioner display device and air conditioner |
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| CN202010033440.2A CN111237986B (en) | 2020-01-13 | 2020-01-13 | Air conditioner display device and air conditioner |
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Effective date of registration: 20200817 Address after: No.28-3, East Industrial Park, Lishui Town, Nanhai District, Foshan City, Guangdong Province Applicant after: Guangdong Jiwei Technology Co., Ltd Address before: 528000 Guangdong Province Nanhai District of Foshan City victory town village group of villagers long river sand self No. 1 Applicant before: Guangdong Zhigao HVAC Equipment Co.,Ltd. |
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