CN210627278U - Taximeter control circuit based on singlechip - Google Patents
Taximeter control circuit based on singlechip Download PDFInfo
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- CN210627278U CN210627278U CN201922092681.XU CN201922092681U CN210627278U CN 210627278 U CN210627278 U CN 210627278U CN 201922092681 U CN201922092681 U CN 201922092681U CN 210627278 U CN210627278 U CN 210627278U
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Abstract
The utility model discloses a taximeter control circuit based on singlechip, including central control module, the power module, the button module, the display module, the clock signal module, the storage module, motor drive module, hall sensor module, power module and central control module, the button module, the display module, the clock signal module, the storage module, motor drive module, hall sensor module are connected respectively, central control module and button module, the display module, the clock signal module, the storage module, motor drive module, hall sensor module are connected respectively, adopt high integrated chip STC singlechip as control center, improve the reliability of whole system; the system adopts a modular design, improves the flexibility of a circuit system, and provides convenience for future overhaul and device replacement.
Description
Technical Field
The utility model relates to a taximeter control circuit based on singlechip.
Background
Domestic taximeters are released by various domestic machinery manufacturers. The taximeter has the functions of only displaying the distance from the beginning (requiring the driver to price and round the distance after calculation), and can automatically charge, and can make an invoice and prompt by voice, automatically change unit price according to time and the like. With the development of urban tourism, the taxi industry has become a window of a city, and represents the civilization degree of the city.
The taximeter is characterized in that the taximeter can be used in a mechanical mode from a traditional mode of completely consisting of mechanical components to a semi-electronic mode, namely, an electronic circuit replaces part of the mechanical components; and then the taximeter is designed from an integrated circuit type to the current single chip microcomputer system. Whether the taximeter is accurate in charging and whether a taxi driver cheats is the most concern of the passenger, and whether the management of the taximeter operation data is convenient is the most concern of the taxi driver. Therefore, it is important to design a taximeter which can effectively prevent cheating of the driver and is convenient for the driver.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a taximeter control circuit based on singlechip.
The utility model discloses a following technical scheme can realize.
The utility model provides a pair of taximeter control circuit based on singlechip, including central control module, power module, button module, display module, clock signal module, storage module, motor drive module, hall sensor module, power module and central control module, button module, display module, clock signal module, storage module, motor drive module, hall sensor module are connected respectively, central control module and button module, display module, clock signal module, storage module, motor drive module, hall sensor module are connected respectively.
The power module comprises a power interface P1 and a self-locking switch S1, wherein a pin 2 and a pin 3 of the power interface P1 are grounded after being in short circuit, a pin 1 of the power interface P1 is connected with a pin 1 of the self-locking switch S1, and a pin 3 of the self-locking switch S1 outputs a power VCC.
The central control module comprises a single chip microcomputer U1, a resistor R1, a crystal oscillator Y1 and capacitors C1-C3, pins 18 and 19 of the single chip microcomputer U1 are respectively connected with two ends of the crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with one end of a capacitor C1 and one end of a capacitor C2, the other end of a capacitor C1 and the other end of a capacitor C2 are grounded after short circuit, a pin 9 of the single chip microcomputer U1 is connected with one end of a resistor R1 and one end of a capacitor C3, the other end of the capacitor C3 is connected with a power supply VCC, and the other end of the resistor R1.
The clock signal module comprises a clock chip U3, a power supply VCC1, a power supply VCC2, a crystal oscillator Y2 and resistors R5-R7, wherein pins 3 and 4 of the clock chip U3 are respectively connected with two ends of the crystal oscillator Y2, pin 1 of the clock chip U3 is connected with a power supply VCC2, pin 8 of the clock chip U3 is connected with the power supply VCC1, pins 5-7 of the clock chip U3 are respectively connected with one ends of the resistors R5-R7, the other ends of the resistors R5-R7 are respectively connected with the power supply VCC after short circuit, and pins 5-7 of the clock chip U3 are respectively connected with pins 4-2 of the singlechip U1.
The storage module comprises a storage chip U2 and resistors R8-R10, wherein 1 pin-4 pins of the storage chip U2 are grounded after short circuit, 5 pins-6 pins of the storage chip U2 are respectively connected with one ends of the resistors R8-R10, the other ends of the resistors R8-R10 are connected with a power supply VCC after short circuit, and 5 pins-7 pins of the storage chip U2 are respectively connected with 8 pins-6 pins of the singlechip U1.
The motor driving module comprises a motor M1, a resistor R11, a potentiometer PR1, a capacitor C4 and a self-locking switch S9, two ends of a binding post of the motor M1 are respectively connected with one end of a resistor R11 and one end of a binding post of the potentiometer PR1, two ends of the capacitor C4 are connected with two ends of a binding post of the motor M1 in parallel, the other end of the resistor R11 is grounded, and a movable end of the potentiometer PR1 is connected with a pin 4 of the self-locking switch S9.
The Hall sensor module comprises a Hall sensor U4 and a resistor R4, wherein a pin 1 and a pin 3 of the Hall sensor U4 are respectively connected with two ends of the resistor R4, a pin 3 of the Hall sensor U4 is connected with a pin 12 of the singlechip U1, and a pin 2 of the Hall sensor U4 is grounded.
The key module comprises touch keys S3-S6, one ends of the touch keys S3-S6 are grounded after being in short circuit, and the other ends of the touch keys S3-S6 are connected with pins 14-17 of the single chip microcomputer U1 respectively.
The display module comprises resistors R2, R3 and a display chip U5, wherein a pin 3 of the display chip U5 is connected with one end of a resistor R2 and one end of a resistor R3 respectively, the other end of the resistor R2 is grounded, the other end of the resistor R3 is connected with a power supply VCC, pins 4 and 6 of the display chip U5 are connected with a pin 5 and a pin 1 of a single chip U1 respectively, and pins 8 to 15 of the display chip U5 are connected with pins 39 to 32 of the single chip U1 respectively.
The model of the single chip microcomputer U1 is STC89C52, the model of the storage chip U2 is AT24C02, the model of the clock chip U3 is D self-locking switch S1302, and the model of the Hall sensor U4 is A3144E.
The beneficial effects of the utility model reside in that: a high-integration chip STC single chip is used as a control center, so that the reliability of the whole system is improved; the system adopts a modular design, improves the flexibility of a circuit system, and provides convenience for future overhaul and device replacement.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a taximeter control circuit based on singlechip, including central control module, power module, button module, display module, clock signal module, storage module, motor drive module, hall sensor module, power module and central control module, button module, display module, clock signal module, storage module, motor drive module, hall sensor module are connected respectively, central control module and button module, display module, clock signal module, storage module, motor drive module, hall sensor module are connected respectively.
The power module comprises a power interface P1 and a self-locking switch S1, wherein a pin 2 and a pin 3 of the power interface P1 are grounded after being in short circuit, a pin 1 of the power interface P1 is connected with a pin 1 of the self-locking switch S1, and a pin 3 of the self-locking switch S1 outputs a power VCC.
The central control module comprises a single chip microcomputer U1, a resistor R1, a crystal oscillator Y1 and capacitors C1-C3, pins 18 and 19 of the single chip microcomputer U1 are respectively connected with two ends of a crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with one end of the capacitor C1 and one end of the capacitor C2, the other end of the capacitor C1 and the other end of the capacitor C2 are grounded after being short-circuited, a pin 9 of the single chip microcomputer U1 is connected with one end of the resistor R1 and one end of the capacitor C3, the other end of the capacitor C3 is connected with a power supply VCC, and the other end of the resistor.
The clock signal module comprises a clock chip U3, a power supply VCC1, a power supply VCC2, a crystal oscillator Y2 and resistors R5-R7, wherein 3 pins and 4 pins of the clock chip U3 are respectively connected with two ends of the crystal oscillator Y2, 1 pin of the clock chip U3 is connected with the power supply VCC2, 8 pins of the clock chip U3 are connected with the power supply VCC1, 5 pins and 7 pins of the clock chip U3 are respectively connected with one ends of the resistors R5-R7, the other ends of the resistors R5-R7 are respectively connected with the power supply VCC after short circuit, 5 pins and 7 pins of the clock chip U3 are respectively connected with 4 pins and 2 pins of the singlechip U1, the power supply VCC1 is a backup power supply, the power supply VCC2 is a main power supply, the power supply VCC1 provides a low power supply and a low-power backup battery power supply in a system, the power supply VCC2 is provided in a dual power supply system, the power supply mode is connected with the power supply VCC1 so that the backup power supply can be stored under the condition that no data, the model of the clock chip U3 is D self-locking switch S1302, the D self-locking switch S1302 is supplied power by the larger of a power VCC1 or a power VCC2, when the power VCC2 is larger than the power VCC1+0.2V, the power VCC2 supplies power to the D self-locking switch S1302, when the power VCC2 is smaller than the power VCC1, the D self-locking switch S1302 is supplied power by the power VCC1, the D self-locking switch S1302 must be initialized before reading and writing programs each time, the SCLK end is firstly set to be '0', then the RST end is set to be '1', and finally the SCLK pulse is given.
The storage module comprises a storage chip U2 and resistors R8-R10, wherein 1 pin to 4 pins of the storage chip U2 are grounded after being short-circuited, 5 pins to 6 pins of the storage chip U2 are respectively connected with one ends of the resistors R8-R10, the other ends of the resistors R8-R10 are connected with a power supply VCC after being short-circuited, 5 pins to 7 pins of the storage chip U2 are respectively connected with 8 pins to 6 pins of a singlechip U1, the module uses master/slave bidirectional communication according to the specification of an I2C bus, a device sends data to the bus and is defined as a sender, and a device receives the data and is defined as a receiver. Both the master and slave devices may operate in a receive and transmit state. The bus must be controlled by a master device (typically a microcontroller) that generates a Serial Clock (SCL) to control the direction of transmission of the bus and to generate start and stop conditions. The data state on the SDA line can only change during periods when SCL is low, and changes in the SDA state during periods when SCL is high are used to indicate start and stop conditions.
The motor driving module comprises a motor M1, a resistor R11, a potentiometer PR1, a capacitor C4 and a self-locking switch S9, two ends of a binding post of the motor M1 are respectively connected with one end of a resistor R11 and one end of a binding post of the potentiometer PR1, two ends of the capacitor C4 are connected with two ends of a binding post of the motor M1 in parallel, the other end of the resistor R11 is grounded, and a movable end of the potentiometer PR1 is connected with a pin 4 of the self-locking switch S9.
The Hall sensor module comprises a Hall sensor U4 and a resistor R4, wherein a pin 1 and a pin 3 of the Hall sensor U4 are respectively connected with two ends of the resistor R4, a pin 3 of the Hall sensor U4 is connected with a pin 12 of the singlechip U1, and a pin 2 of the Hall sensor U4 is grounded.
The key module comprises touch keys S3-S6, one ends of the touch keys S3-S6 are grounded after being in short circuit, the other ends of the touch keys S3-S6 are respectively connected with 14 pins-17 pins of the single chip microcomputer U1, and functions of the touch keys S3-S6 are respectively corresponding to switching, adding, deleting and setting.
The display module comprises resistors R2, R3 and a display chip U5, wherein 3 pins of the display chip U5 are respectively connected with one end of a resistor R2 and one end of a resistor R3, the other end of the resistor R2 is grounded, the other end of the resistor R3 is connected with a power supply VCC, 4 pins and 6 pins of the display chip U5 are respectively connected with 5 pins and 1 pin of a single chip U1, and 8 pins to 15 pins of the display chip U5 are respectively connected with 39 pins to 32 pins of the single chip U1.
The model of the single chip microcomputer U1 is STC89C52, the model of the storage chip U2 is AT24C02, the model of the clock chip U3 is D self-locking switch S1302, and the model of the Hall sensor U4 is A3144E.
The working principle of the system is as follows: the STC89C52 single chip microcomputer is used as a main control chip of a main control module, the control of the whole system is realized by combining a peripheral circuit of the single chip microcomputer, a D self-locking switch S1302 clock chip has the functions of powering on again and not adjusting time, a display part adopts LCD1602 liquid crystal display, a 24C02 chip can store set charging data in a power-down mode, the set cost cannot be lost even if the power is down, a 3v direct current motor simulates the work of an engine, the whole design is more vivid, the liquid crystal can display time (year, month, hour, minute and second) when no passenger exists, the time can be set by a key, and the motor does not work at the; when passengers are available, the motor works, the charging system can start to work through pressing the key, the zero clearing key is provided, the charging can be modified (including the starting price, the charging per kilometer or minute exceeding the starting price, and the charging standard of the day and night), the charging standard of the day and night can be switched, and the charging can be switched according to the minutes or kilometers.
Claims (10)
1. The utility model provides a taximeter control circuit based on singlechip which characterized in that: the intelligent control device comprises a central control module, a power supply module, a key module, a display module, a clock signal module, a storage module, a motor driving module and a Hall sensor module, wherein the power supply module is respectively connected with the central control module, the key module, the display module, the clock signal module, the storage module, the motor driving module and the Hall sensor module, and the central control module is respectively connected with the key module, the display module, the clock signal module, the storage module, the motor driving module and the Hall sensor module.
2. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the power module comprises a power interface P1 and a self-locking switch S1, wherein a pin 2 and a pin 3 of the power interface P1 are grounded after being in short circuit, a pin 1 of the power interface P1 is connected with a pin 1 of the self-locking switch S1, and a pin 3 of the self-locking switch S1 outputs a power VCC.
3. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the central control module comprises a single chip microcomputer U1, a resistor R1, a crystal oscillator Y1 and capacitors C1-C3, pins 18 and 19 of the single chip microcomputer U1 are respectively connected with two ends of the crystal oscillator Y1, two ends of the crystal oscillator Y1 are respectively connected with one end of a capacitor C1 and one end of a capacitor C2, the other end of a capacitor C1 and the other end of a capacitor C2 are grounded after short circuit, a pin 9 of the single chip microcomputer U1 is connected with one end of a resistor R1 and one end of a capacitor C3, the other end of the capacitor C3 is connected with a power supply VCC, and the other end of the resistor R1.
4. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the clock signal module comprises a clock chip U3, a power supply VCC1, a power supply VCC2, a crystal oscillator Y2 and resistors R5-R7, wherein pins 3 and 4 of the clock chip U3 are respectively connected with two ends of the crystal oscillator Y2, pin 1 of the clock chip U3 is connected with a power supply VCC2, pin 8 of the clock chip U3 is connected with the power supply VCC1, pins 5-7 of the clock chip U3 are respectively connected with one ends of the resistors R5-R7, the other ends of the resistors R5-R7 are respectively connected with the power supply VCC after short circuit, and pins 5-7 of the clock chip U3 are respectively connected with pins 4-2 of the singlechip U1.
5. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the storage module comprises a storage chip U2 and resistors R8-R10, wherein 1 pin-4 pins of the storage chip U2 are grounded after short circuit, 5 pins-6 pins of the storage chip U2 are respectively connected with one ends of the resistors R8-R10, the other ends of the resistors R8-R10 are connected with a power supply VCC after short circuit, and 5 pins-7 pins of the storage chip U2 are respectively connected with 8 pins-6 pins of the singlechip U1.
6. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the motor driving module comprises a motor M1, a resistor R11, a potentiometer PR1, a capacitor C4 and a self-locking switch S9, two ends of a binding post of the motor M1 are respectively connected with one end of a resistor R11 and one end of a binding post of the potentiometer PR1, two ends of the capacitor C4 are connected with two ends of a binding post of the motor M1 in parallel, the other end of the resistor R11 is grounded, and a movable end of the potentiometer PR1 is connected with a pin 4 of the self-locking switch S9.
7. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the Hall sensor module comprises a Hall sensor U4 and a resistor R4, wherein a pin 1 and a pin 3 of the Hall sensor U4 are respectively connected with two ends of the resistor R4, a pin 3 of the Hall sensor U4 is connected with a pin 12 of the singlechip U1, and a pin 2 of the Hall sensor U4 is grounded.
8. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the key module comprises touch keys S3-S6, one ends of the touch keys S3-S6 are grounded after being in short circuit, and the other ends of the touch keys S3-S6 are connected with pins 14-17 of the single chip microcomputer U1 respectively.
9. The single-chip microcomputer-based taximeter control circuit according to claim 1, wherein: the display module comprises resistors R2, R3 and a display chip U5, wherein a pin 3 of the display chip U5 is connected with one end of a resistor R2 and one end of a resistor R3 respectively, the other end of the resistor R2 is grounded, the other end of the resistor R3 is connected with a power supply VCC, pins 4 and 6 of the display chip U5 are connected with a pin 5 and a pin 1 of a single chip U1 respectively, and pins 8 to 15 of the display chip U5 are connected with pins 39 to 32 of the single chip U1 respectively.
10. The one-chip microcomputer based taximeter control circuit according to any one of claims 1 to 9, wherein: the model of the single chip microcomputer U1 is STC89C52, the model of the storage chip U2 is AT24C02, the model of the clock chip U3 is D self-locking switch S1302, and the model of the Hall sensor U4 is A3144E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922092681.XU CN210627278U (en) | 2019-11-28 | 2019-11-28 | Taximeter control circuit based on singlechip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922092681.XU CN210627278U (en) | 2019-11-28 | 2019-11-28 | Taximeter control circuit based on singlechip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210627278U true CN210627278U (en) | 2020-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922092681.XU Expired - Fee Related CN210627278U (en) | 2019-11-28 | 2019-11-28 | Taximeter control circuit based on singlechip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210627278U (en) |
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2019
- 2019-11-28 CN CN201922092681.XU patent/CN210627278U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200526 Termination date: 20201128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |