CN2600896Y - Liquid crystal display device on electric bicycle - Google Patents
Liquid crystal display device on electric bicycle Download PDFInfo
- Publication number
- CN2600896Y CN2600896Y CN 03220100 CN03220100U CN2600896Y CN 2600896 Y CN2600896 Y CN 2600896Y CN 03220100 CN03220100 CN 03220100 CN 03220100 U CN03220100 U CN 03220100U CN 2600896 Y CN2600896 Y CN 2600896Y
- Authority
- CN
- China
- Prior art keywords
- lcd
- electric
- electric bicycle
- chip
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
An LCD for electric bicycles essentially comprises an EM78P458 SCM, an HT1622 LC drive chip, an erasable program memory EEPROM24C02, and a TCM2801 dedicated LCD, wherein speed, current and voltage signals of the electric bicycle can be collected and sent by a voltage sampling circuit, a current sensor and a magnetic Hall element to the two A/D conversion interface and a numbering interface of the SCM. The LCD displays parameters including the speed, mileage, electric quantity, electric current and clock etc when the electric bicycle is running, aided by graphic displays. During repair works, record contents of the EEPROM can be displayed. The utility model is convenient to use and costs little, thus possesses extensive practicability.
Description
One, technical field
The utility model relates to the electric bicycle LCD, is particularly useful for electric bicycle, also is applicable to the electric motor car that other needs LCD.
Two, background technology
At present, the 7 hop count sign indicating number displays that the electronic instrument of China's electric bicycle has three classes: LED (light emitting diode) substantially or is made up of LED, VFD (vacuum fluorescent display) and LCD (liquid crystal display device), but also unspecial LCD display part that design for electric motor car, that have dynamic figure.
Three, technology contents
(1) goal of the invention
The purpose of this utility model provides a kind of electric bicycle LCD, its all parameters are as working current, mileage, real-time speed, battery electric quantity, on same screen, all show, special LCD display that design for electric motor car, that have dynamic patterns is set, visual and understandable, the reliability height.
(2) technical scheme
The utility model electric bicycle LCD, it comprises single-chip microcomputer, lcd drive chip and special liquid crystal display screen, the speed of electric motor car, electric current, voltage signal are picked up by the circuit that voltage sampling is set, current sensor, magnetic Hall element, connect 2 A/D conversion mouths and counting mouth of single-chip microcomputer.The monolithic type is EM78P458, and single-chip microcomputer links to each other with lcd drive chip HT1622, and lcd drive chip HT1622 is connected with LCD TCM2801, circuit expand have can be after outage the EEPROM24C02 chip of long preservation data.
(3) technique effect
The utility model electric bicycle LCD can the real time reaction travel speed, vehicle condition parameter such as mileage, working current, battery electric quantity, and is furnished with graphic presentation, and is intuitive and reliable, be convenient to equipment maintain, safeguard, maintenance and verification.
Four, description of drawings:
Accompanying drawing is the utility model electric bicycle LCD circuit schematic diagram.
The utility model electric bicycle LCD, mainly form by single-chip microcomputer, lcd drive chip and special liquid crystal display screen, the electric current of electric motor car, voltage signal are picked up by voltage sample circuit, current sensor, deliver to 2 A/D conversion mouths of single-chip microcomputer: P60AD1, P60AD3, the rate signal of electric motor car is picked up by the magnetic Hall element, deliver to the counting mouth P56/C+ of single-chip microcomputer, it is EM78P458 that single-chip microcomputer adopts model; It is HT1622 that lcd drive chip adopts model.11,10,14 pin of single-chip microcomputer are received 1,3,4 pin of HT1622 lcd drive chip respectively, respectively as chip selection signal, write signal and the data transfer signals of lcd drive chip HT1622, lcd drive chip HT1622 is connected with LCD TCM2801, show when time mileage with digital form, accumulative mileage, the time; Show electric current, voltage and speed with graphics mode, and have overcurrent and under-voltage indication.Circuit also expanded can be after outage the EEPROM24C02 chip of long preservation data.
Claims (3)
1. electric bicycle LCD, it comprises single-chip microcomputer, lcd drive chip and special liquid crystal display screen, it is characterized in that: the speed of electric motor car, electric current, voltage signal are picked up by voltage sample circuit, current sensor, the magnetic Hall element of setting, and connect 2 A/D conversion mouths and a counting mouth of single-chip microcomputer.
2. electric bicycle LCD according to claim 1 is characterized in that: 11,10,14 pin of described single-chip microcomputer are connected with 1,3,4 pin of lcd drive chip respectively, and lcd drive chip is connected with LCD.
3. electric bicycle LCD according to claim 1 and 2 is characterized in that: described single chip circuit expands the chip that has can make it preserve data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220100 CN2600896Y (en) | 2003-02-25 | 2003-02-25 | Liquid crystal display device on electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03220100 CN2600896Y (en) | 2003-02-25 | 2003-02-25 | Liquid crystal display device on electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2600896Y true CN2600896Y (en) | 2004-01-21 |
Family
ID=34161665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03220100 Expired - Fee Related CN2600896Y (en) | 2003-02-25 | 2003-02-25 | Liquid crystal display device on electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2600896Y (en) |
-
2003
- 2003-02-25 CN CN 03220100 patent/CN2600896Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |