CN215911171U - Intelligent electric meter - Google Patents
Intelligent electric meter Download PDFInfo
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- CN215911171U CN215911171U CN202122207076.XU CN202122207076U CN215911171U CN 215911171 U CN215911171 U CN 215911171U CN 202122207076 U CN202122207076 U CN 202122207076U CN 215911171 U CN215911171 U CN 215911171U
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Abstract
The utility model discloses an intelligent ammeter which comprises a COG liquid crystal display screen and a main control chip, wherein the COG liquid crystal display screen is internally provided with a liquid crystal driver, and the main control chip is connected with the ammeter and the COG liquid crystal display screen and used for transmitting display data through serial port communication. Because the COG liquid crystal display screen is provided with the built-in liquid crystal driver, the main control chip used in a matched mode does not need the built-in liquid crystal driver, the situation that the built-in liquid crystal driver occupies a large number of pins of the main control chip is avoided, pin resources of the main control chip are saved, and the main control chip can provide more pins for displaying data information.
Description
Technical Field
The utility model relates to the field of electric meters, in particular to an intelligent electric meter.
Background
The intelligent electric meter is an intelligent terminal of an intelligent power grid, is not an electric energy meter in the traditional sense, has intelligent functions such as bidirectional multi-rate metering function, user side control function, bidirectional data communication function with multiple data transmission modes, electricity larceny prevention function and the like besides the metering function of basic electricity consumption of the traditional electric energy meter, and is usually matched with a main control chip with built-in liquid crystal drive by adopting a segment code liquid crystal display screen.
With the technical development and function expansion of the intelligent electric energy meter, the content to be displayed becomes more and more complex, more and more pins of the main control chip are required to be occupied, and the built-in liquid crystal driver of the currently used main control chip with built-in liquid crystal driver can occupy a large number of pins of the main control chip.
Therefore, how to save the pins of the main control chip is a technical problem to be solved urgently by the people in the field.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a smart electric meter.
In order to solve the above technical problem, the present invention provides an intelligent electric meter, which further comprises:
a COG liquid crystal display screen, a main control chip,
the COG liquid crystal display screen is provided with a built-in liquid crystal driver, the main control chip is connected with the ammeter and the COG liquid crystal display screen, and display data are transmitted through serial port communication.
Preferably, the display device further comprises a backlight display auxiliary device, and the backlight display auxiliary device is connected with the main control chip.
Preferably, the auxiliary backlight display device includes a first resistor, a second resistor, a third resistor, a capacitor, a light emitting diode, and an NPN transistor, where an anode of the light emitting diode is connected to a power source and a first end of the capacitor, a cathode of the light emitting diode is connected to a second end of the capacitor and the first end of the first resistor, a second end of the first resistor is connected to a collector of the NPN transistor, a base of the NPN transistor is connected to an output port of the main control chip through the third resistor, the base of the NPN transistor is connected to the first end of the second resistor, and an emitter of the NPN transistor is connected to the second end of the second resistor.
Preferably, the COG liquid crystal display device further comprises a backlight bracket, and the backlight bracket is used for fixing the COG liquid crystal display screen and the backlight display auxiliary device.
Preferably, the backlight bracket is a bracket with buckles at both sides.
Preferably, the main control chip is wirelessly connected with an operation instrument remote controller, and the main control chip controls the COG liquid crystal display screen to display data information according to an instruction sent by the operation instrument remote controller.
Preferably, the intelligent terminal further comprises a voice output device, and the voice output device is connected with the main control chip.
Preferably, the model of the main control chip is V8530P. .
The intelligent electric meter provided by the utility model adopts the COG (chip on glass) liquid crystal display screen which is provided with the built-in liquid crystal drive, so that the matched main control chip does not need the built-in liquid crystal drive, the situation that the built-in liquid crystal drive occupies a large number of pins of the main control chip is avoided, the pins of the main control chip are saved, and the main control chip can provide more pins for displaying information.
Drawings
In order to illustrate the embodiments of the present invention more clearly, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic diagram illustrating a connection between a COG liquid crystal display and a main control chip provided in an embodiment of the present application;
FIG. 2 is a circuit diagram of an auxiliary device for backlight display according to an embodiment of the present disclosure;
fig. 3 is a schematic view of a backlight bracket according to an embodiment of the present application;
fig. 4 is a top view of a backlight bracket provided in an embodiment of the present application;
FIG. 5 is a side view of a backlight bracket provided in an embodiment of the present application;
wherein the reference numbers are as follows: 11 is COG liquid crystal display, 12 is the main control chip, and 31 is the buckle.
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 obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
The core of the utility model is to provide an intelligent ammeter, which solves the problems that the content to be displayed is gradually complicated, more and more pins of a main control chip are required to be occupied, the built-in liquid crystal drive of the currently used main control chip with built-in liquid crystal drive occupies a large number of pins of the main control chip, and the pins of the main control chip are not enough.
In order that those skilled in the art will better understand the disclosure, the utility model will be described in further detail with reference to the accompanying drawings and specific embodiments.
This embodiment provides a smart electric meter, including the ammeter, still include:
a COG liquid crystal display screen 11, a main control chip 12,
the COG liquid crystal display screen 11 is provided with a built-in liquid crystal driver, and the main control chip 12 is connected with the electric meter and the COG liquid crystal display screen 11 and used for transmitting display data through serial port communication.
Fig. 1 is a schematic diagram illustrating a connection between a COG liquid crystal display and a main control chip provided in an embodiment of the present application.
It should be noted that the COG mentioned in this embodiment refers to a module technology of a liquid crystal display, and its corresponding technology is COF, C refers to a processing chip, O refers to english ON, and G refers to GLASS GLASS. The COG is usually a single piece of glass, the glass is already covered and pressed with an IC chip, a COG liquid crystal screen can display various characters and graphs, and the COG liquid crystal screen has the advantages of flexible interface, small volume, lightness, low working voltage, low energy consumption and more substantial price. Has gained market acceptance in recent years and is widely applied to products such as handheld devices, digital equipment and instruments.
The COG liquid crystal display 11 mentioned in this embodiment refers to a flip-chip liquid crystal display, and refers to a built-in liquid crystal driving chip that is pressed, and the liquid crystal driving operation can be realized through a peripheral power supply circuit.
Specifically, the display screen of the intelligent electric meter adopts a COG liquid crystal display screen 11, the COG liquid crystal display screen 11 is provided with a built-in liquid crystal driver, and therefore the main control chip 12 of the intelligent electric meter does not need to select the main control chip 12 driven by the built-in liquid crystal driver, as shown in fig. 1, the COG liquid crystal display screen 11 is connected with the main control chip 12, and display data are transmitted through serial port communication. The COG liquid crystal display 11 is connected with the main control chip 12 and only occupies two pins of the main control chip 12.
The main control chip 12 does not need a built-in liquid crystal driver, so that the built-in liquid crystal driver is prevented from occupying a large number of pins of the main control chip 12, the pins of the main control chip 12 are saved, and the main control chip 12 can provide more pins for displaying information.
According to the embodiment, in the practical use process of the smart electric meter, when light is insufficient, the user may be influenced to check the data information of the smart electric meter.
The backlight display auxiliary device mentioned in this embodiment means that when light in the environment is insufficient, the backlight display auxiliary device can supplement a light source for the display screen of the smart meter, and this embodiment does not limit what form the backlight display auxiliary device is, for example, by using a key to send an instruction to turn on the light source to the main control chip 12, the main control chip 12 controls the backlight display auxiliary device to supplement the light source for the OCG liquid crystal display screen 11; the main control chip 12 can judge whether the light is sufficient in the environment by connecting the photoresistor, and when the light is insufficient, the backlight display auxiliary device is controlled to supplement the light source for the OCG liquid crystal display screen 11.
Through backlight display device, when light is not enough in the environment, main control chip 12 control is shaded and is shown auxiliary device and for 11 supplementary light sources of OCG liquid crystal display, improves the user and uses experience and feel.
According to the above embodiments, this embodiment provides a preferred solution, fig. 2 is a circuit diagram of an auxiliary device for backlight display provided in this embodiment of the present application, and as shown in fig. 2, the auxiliary device for backlight display includes a first resistor R6, a second resistor R7, a third resistor R8, a capacitor C2, a light emitting diode VD1, an NPN transistor Q1, an anode of the light emitting diode VD1 is connected to a power supply and a first end of the capacitor C2, a cathode of the light emitting diode VD1 is connected to a second end of the capacitor C2 and a first end of the first resistor R6, a second end of the first resistor R6 is connected to a collector of the transistor Q1, a base of the NPN transistor Q1 is connected to an output port of the main control chip 12 through the third resistor R8, a base of the NPN transistor Q1 is connected to a first end of the second resistor R7, and an emitter of the NPN transistor 1 is connected to a second end of the second resistor R7.
The NPN triode Q1 is a control element, the main control chip 12 is connected to the base of the NPN triode Q1 through the third resistor R8, when the base voltage of the NPN triode Q1 changes slightly, the base current changes slightly, and under the control of the base current, the collector current changes greatly, and the larger the base current is, the larger the collector current is, and conversely, the smaller the base current is, the smaller the collector current is, that is, the base current controls the change of the collector current. But the change in collector current is much larger than the change in base current, which is the amplification of the triode. Therefore, the main control chip 12 can control the conduction of the collector and the emitter of the triode by a very small voltage. The control signal of the main control chip 12 can come from different ports, and the output power input of the port of the main control chip 12 is very small but enough to drive the circuit to be conducted, so that a peripheral circuit is not required to be added, and the cost is saved. As shown in fig. 2, the main control chip 12 controls the base voltage of the NPN transistor Q1 through the control interface, and when the base voltage is greater than the collector voltage by about 0.7V, the collector and the emitter are turned on, the light emitting diode VD1 is turned on, and the light emitting diode VD1 is a supplementary light source for the OCG liquid crystal display 11 of the smart meter.
In addition, fig. 2 shows only one light emitting diode VD1, and the number of the light emitting diodes VD1 is not limited in this embodiment, and may be designed according to actual situations.
According to the above embodiment, since the COG liquid crystal display 11 has few pins, and is not suitable for fixed mounting, and vibration is easily damaged, this embodiment provides a preferable scheme, and further includes a backlight bracket, and the backlight bracket is used for fixing the COG liquid crystal display 11 and the backlight display auxiliary device.
The COG liquid crystal display 11 and the backlight display auxiliary device are fixed on the backlight bracket, and the backlight bracket can be installed on the smart meter.
According to the above embodiments, the present embodiment provides a preferable scheme for the way that the COG liquid crystal display panel 11 and the backlight display auxiliary device are fixed on the backlight bracket, and the backlight bracket is a bracket with a buckle 31.
Fig. 3 is a schematic view of a backlight bracket provided in the embodiment of the present application, fig. 4 is a top view of the backlight bracket provided in the embodiment of the present application, and fig. 5 is a side view of the backlight bracket provided in the embodiment of the present application, as shown in fig. 3, the backlight bracket provided in the embodiment of the present application is provided with a buckle 31, and the COG liquid crystal display panel 11 and the backlight display auxiliary device can be fixed on the backlight bracket through the buckle 31.
In addition, the present embodiment does not limit the material and the size of the backlight bracket, and the backlight bracket may be used according to practical situations.
According to the above embodiments, this embodiment provides a preferable scheme, the main control chip 12 is wirelessly connected to the remote controller of the operation instrument, and the main control chip 12 controls the COG liquid crystal display 11 to display data information according to an instruction sent by the remote controller of the operation instrument.
It should be noted that the present embodiment does not limit the form of the wireless connection between the main control chip 12 and the operation instrument remote controller, such as wireless radio frequency, bluetooth, and infrared communication technologies. Preferably, infrared communication technology is selected as the form of wireless connection communication. The infrared communication has strong security, hardly suffers from electric interference, natural electricity interference and man-made interference, and has small volume, light weight, simple structure and low price.
Specifically, the main control chip 12 receives an instruction sent by the operation instrument remote controller and displays data information according to the control COG liquid crystal display 11, the content of the instruction is not limited in this embodiment, for example, the instruction is sent to display specific data information, the instruction is sent to automatically and alternately display a table to inquire all data information, or the data information of the whole table is displayed, and the design is performed according to the actual needs of the user.
According to the embodiment, when light is insufficient, the backlight display auxiliary device supplements a light source for the display screen of the intelligent electric meter, the user experience is improved, another preferable scheme is provided in the embodiment, and the backlight display auxiliary device further comprises a voice output device, and the voice output device is connected with the main control chip 12.
The voice output device mentioned in this embodiment refers to a device for playing voice, such as a microphone or a speaker.
The voice output device is connected with the main control chip 12, when the user is inconvenient to watch, the main control chip 12 can play the data information which the user needs to know through voice, and the user experience is improved.
In addition, the main control chip 12 can play the data information that the user needs to know after the user sends an instruction, or can automatically play the displayed data information while displaying the data information on the display screen, and the main control chip is designed according to actual needs.
According to the above embodiments, this embodiment provides a preferable scheme, and the model of the main control chip 12 is V8530P.
The V8530P chip is provided with a highly integrated 32-bit MCU series product, and is suitable for multifunctional and low-power-consumption Internet of things application. It integrates Cortex-M0 core, 512KBFLASH, 64KBSRAM, UART/SPI/I2C interface, LCD, WDT and RTC. And various low-power consumption working modes are supported, and independent power supply of an RTC power supply is supported. The V8530P has a real-time clock and has the advantages of large internal storage space, low cost and low power consumption.
The smart meter provided by the utility model is described in detail above. The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. The utility model provides a smart electric meter, ammeter which characterized in that still includes:
a COG liquid crystal display screen (11), a main control chip (12),
the COG liquid crystal display screen (11) is provided with a built-in liquid crystal driver, and the main control chip (12) is connected with the electric meter and the COG liquid crystal display screen (11) and used for transmitting display data through serial port communication.
2. The smart meter of claim 1, further comprising a backlight display auxiliary device, wherein the backlight display auxiliary device is connected to the main control chip (12).
3. The smart meter of claim 2, wherein the backlight display auxiliary device comprises a first resistor, a second resistor, a third resistor, a capacitor, a light emitting diode, and an NPN transistor, wherein an anode of the light emitting diode is connected to a power source and a first end of the capacitor, a cathode of the light emitting diode is connected to a second end of the capacitor and the first end of the first resistor, a second end of the first resistor is connected to a collector of the NPN transistor, a base of the NPN transistor is connected to the output port of the main control chip through the third resistor, the base of the NPN transistor is connected to the first end of the second resistor, and an emitter of the NPN transistor is connected to the second end of the second resistor.
4. A smart meter as claimed in claim 3, further comprising a backlight bracket for securing the COG liquid crystal display (11) and the backlight display aid.
5. A smart meter as claimed in claim 4, characterized in that the backlight bracket is a bracket of a double-sided belt buckle (31).
6. The intelligent electric meter according to claim 1, characterized in that the main control chip (12) is wirelessly connected with an operation instrument remote controller, and the main control chip (12) controls the COG liquid crystal display (11) to display data information according to an instruction sent by the operation instrument remote controller.
7. The smart meter of claim 1, further comprising a voice output device, wherein the voice output device is connected to the main control chip (12).
8. The smart meter according to any one of claims 1 to 7, characterized in that the main control chip (12) has a model number of V8530P.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122207076.XU CN215911171U (en) | 2021-09-13 | 2021-09-13 | Intelligent electric meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122207076.XU CN215911171U (en) | 2021-09-13 | 2021-09-13 | Intelligent electric meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215911171U true CN215911171U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122207076.XU Active CN215911171U (en) | 2021-09-13 | 2021-09-13 | Intelligent electric meter |
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| Country | Link |
|---|---|
| CN (1) | CN215911171U (en) |
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2021
- 2021-09-13 CN CN202122207076.XU patent/CN215911171U/en active Active
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