CN213779056U - GPS code table circuit - Google Patents
GPS code table circuit Download PDFInfo
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- CN213779056U CN213779056U CN202022485996.3U CN202022485996U CN213779056U CN 213779056 U CN213779056 U CN 213779056U CN 202022485996 U CN202022485996 U CN 202022485996U CN 213779056 U CN213779056 U CN 213779056U
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Abstract
The utility model relates to a GPS code meter circuit, which comprises a main control circuit, a barometer circuit, a GPS positioning circuit, a display circuit and a starting circuit, wherein the main control circuit is respectively electrically connected with the barometer circuit, the GPS positioning circuit, the display circuit and the starting circuit; the main control circuit comprises a main control chip U37A, U37B, U37C, a crystal oscillator Y7, Y12 and capacitors C33, C39, C174 and C175, wherein a pin F1 of the main control chip U37C is connected with a pin G1 of the main control chip U37C through the crystal oscillator Y1, a pin F1 of the main control chip U37C is grounded through the capacitor C39, and a pin G1 of the main control chip U37C is grounded through the capacitor C33. GPS code table circuit, through comparatively simple circuit structure realized GPS code table location and gather environmental information's function.
Description
Technical Field
The utility model relates to a GPS stopwatch technical field especially relates to a GPS stopwatch circuit.
Background
The stopwatch is an electronic product which is arranged on a bicycle, a motorcycle, an automobile and the like and is used for recording and displaying a plurality of riding data; with more and more importance on health and sports in recent years, the GPS code table is more and more popular with people; the traditional GPS code meter has a complex circuit structure, so that the production cost and the use cost of the GPS code meter are high, and the interference in the riding state is serious.
SUMMERY OF THE UTILITY MODEL
Accordingly, there is a need to provide a GPS code table circuit, which is used to solve the problem of complex structure of the existing GPS code table circuit.
The utility model provides a GPS code table circuit, which comprises a main control circuit, a barometer circuit, a GPS positioning circuit, a display circuit and a starting circuit, wherein the main control circuit is respectively electrically connected with the barometer circuit, the GPS positioning circuit, the display circuit and the starting circuit;
the main control circuit comprises a main control chip U37A, U37B, U37C, a crystal oscillator Y7, Y12 and capacitors C33, C39, C174 and C175, wherein a pin F1 of the main control chip U37C is connected with a pin G1 of the main control chip U37C through the crystal oscillator Y1, a pin F1 of the main control chip U37C is grounded through the capacitor C39, and a pin G1 of the main control chip U37C is grounded through the capacitor C33.
Further, the barometer circuit comprises a barometer U46, a VDD pin of the barometer U46 is connected with a CSB pin of the barometer U46, an SDO pin of the barometer U46 is connected with a GND pin of the barometer U46, and pins I2C1_ SCL and I2C1_ SDA of the barometer U46 are respectively connected with pins F4 and F5 of the main control chip U37C.
Further, the GPS positioning circuit comprises a GPS positioning chip U30, capacitors C56, C107, C108, C110-C113, inductors L9 and L13, wherein the GPS positioning chip U30 is used for position information of a user, a VDD _ LNA pin and an LDO _ RF _ OUT pin of the GPS positioning chip U30 are connected through the capacitors C107 and C108, and the capacitors C107 and C108 are connected in series and then connected in parallel with the inductor L13; the pins of V _ DCDC _ IN, VDD _ IO, V _ BCKP and LDO _ B _ OUT of the GPS positioning chip U30 are grounded through capacitors C111, C56, C112 and C113 respectively, the pin of V _ DCDC _ OUT of the GPS positioning chip U30 is grounded through an inductor L9 and a capacitor C110, the pin of V _ DCDC _ OUT of the GPS positioning chip U30 is grounded through a capacitor C110, and PIO _11 of the GPS positioning chip U30 is connected with the pin A1 of a main control chip U37B.
Further, the display circuit comprises a display interface J7 and a capacitor C97, a VDD pin of the display interface J7 is grounded through the capacitor C97, and LTDC _ R3-LTDC _ R7, LTDC _ G2-LTDC _ G7 and LTDC _ B3-LTDCB7 pins of the display interface J7 are respectively connected with K10, K9, J10, J9, J8, J6, H6, N8, M8, L8, K7, H10, B8, C8, L7 and K6 pins of the main control chip U37B.
Further, the POWER-on circuit comprises a POWER-on chip U35, capacitors C120 and C122, the GND1 and the GND2 of the POWER-on chip U35 are grounded, the VBAT pin of the POWER-on chip U35 is grounded through the capacitor C120, and the POWER _ KEY pin of the POWER-on chip U35 is grounded through the capacitor C122.
Further, the GPS code table circuit further includes a backlight driving circuit, the backlight driving circuit includes a backlight driving chip U18, a capacitor L12, a resistor R57, a resistor R58 and a diode D5, an EN pin of the backlight driving chip U18 is grounded through a resistor R57, an FB pin of the backlight driving chip U18 is connected to a LEDK pin of the display J7 through a resistor R58, and an LX pin of the backlight driving chip U18 is connected to a LEDA pin of the display J7 through a diode D5.
Further, the GPS code table circuit further includes a memory circuit, the memory circuit includes a memory chip U5, and the MMCSD0_ D0-MMCSD0_ D7, MMCSD0_ RST, MMCSD0_ CMD, MMCSD0_ CLK pins of the memory chip U5 are respectively connected with the F9, G13, D9, E9, C4, F11, G11, E11, D8, F8 pins of the main control chip U37B.
Further, the GPS code table circuit further includes a time management circuit, the time management circuit includes a time recording chip U14, capacitors C37, C48 and a crystal oscillator Y9, the OSCI pin of the time recording chip U14 is connected to one end of the capacitor C48, the other end of the capacitor C48 is connected to one end of the capacitor C37, the other end of the capacitor C37 is connected to the OSCO pin of the time recording chip U14, the crystal oscillator Y9 is connected between the OSCI and OSCO pins of the time recording chip U14, and the SCL and SDA pins of the time recording chip U14 are respectively connected to F4 and F5 pins of a main control chip U37C.
Further, the GPS code table circuit further includes an accelerometer sensing circuit, the accelerometer sensing circuit includes accelerometer sensor U34, capacitance C117, C118, C119 and resistance R110, R111, one end ground is connected after capacitances C117, C118 are connected in parallel, the other end is connected with VDD _ IO pin of accelerometer sensor U34, VDD pin of accelerometer sensor U34 is connected to ground through capacitance C119, ADC3, RES pin of accelerometer sensor U34 are connected, I2C1_ SDA, INT1, ACC _ INT2 pin of accelerometer sensor U34 respectively with F5, E3, H5 pin of ACC main control chip U37C are connected.
Compared with the prior art, the beneficial effects of the utility model include: the atmospheric pressure, the altitude value and the temperature data of the surrounding environment of the user are obtained through the barometer circuit and are sent to the main control circuit, the GPS positioning circuit obtains the position information of the user and sends the position information to the main control circuit, the main control circuit carries out interference filtering processing on the position information, the atmospheric pressure, the altitude value and the temperature data, and the position information, the atmospheric pressure, the altitude value and the temperature data after the interference is filtered are sent to the display circuit; the functions of positioning the GPS code table and collecting the environmental information are realized through a simpler circuit structure.
Drawings
Fig. 1 is a block diagram of a GPS code table circuit provided by the present invention;
fig. 2-4 are schematic circuit diagrams of the main control circuit provided by the present invention;
fig. 5 is a schematic circuit diagram of the barometer circuit provided by the present invention;
fig. 6 is a schematic circuit diagram of a GPS positioning circuit provided by the present invention;
fig. 7 is a schematic circuit diagram of a display circuit provided by the present invention;
fig. 8 is a schematic circuit diagram of a power-on circuit provided by the present invention;
fig. 9 is a schematic circuit diagram of a backlight driving circuit provided by the present invention;
fig. 10 is a schematic circuit diagram of a memory circuit provided by the present invention;
fig. 11 is a schematic circuit diagram of a time management circuit provided by the present invention;
fig. 12 is a schematic circuit diagram of a charging circuit according to the present invention.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
The embodiment of the utility model provides a GPS code table circuit, the structure block diagram of circuit, as shown in fig. 1, the circuit includes main control circuit 1, barometer circuit 2, GPS positioning circuit 3, display circuit 4 and start circuit 5, main control circuit 1 is connected with barometer circuit 2, GPS positioning circuit 3, display circuit 4 and start circuit 5 electricity respectively;
the main control circuit 1 comprises a main control chip U37A, U37B, U37C, crystal oscillators Y7, Y12 and capacitors C33, C39, C174 and C175, wherein a pin F1 of the main control chip U37C is connected with a pin G1 of the main control chip U37C through the crystal oscillator Y1, a pin F1 of the main control chip U37C is grounded through the capacitor C39, and a pin G1 of the main control chip U37C is grounded through the capacitor C33.
It should be noted that the barometer circuit is configured to obtain air pressure, an altitude value, and temperature data of an environment around a user, and send the air pressure, the altitude value, and the temperature data to the main control circuit; the GPS positioning circuit is used for acquiring the position information of a user and sending the position information to the main control circuit; the main control circuit is used for carrying out interference filtering processing on the position information, the air pressure, the height value and the temperature data and sending the position information, the air pressure, the height value and the temperature data subjected to interference filtering to the display circuit; the display circuit is used for displaying air pressure, height values and temperature data; the functions of positioning the GPS code table and collecting the environmental information are realized through a simpler circuit structure.
In a specific embodiment, the circuit schematic diagram of the master control circuit is shown in fig. 2-4; the main control chips U37A, U37B and U37C are STM32L4R9AII6TR/ST models;
preferably, the barometer circuit comprises a barometer U46, a VDD pin of the barometer U46 is connected to a CSB pin thereof, an SDO pin of the barometer U46 is connected to a GND pin thereof, and pins I2C1_ SCL and I2C1_ SDA of the barometer U46 are respectively connected to pins F4 and F5 of the main control chip U37C;
in one embodiment, the barometer circuit is a schematic circuit diagram, as shown in fig. 5, the barometer is model number SPL06/Geortek, the barometer measures real-time barometric pressure through the barometer, and then directly converts it into a height value, and the barometer can measure temperature through its built-in temperature sensor;
preferably, the GPS positioning circuit includes a GPS positioning chip U30, capacitors C56, C107, C108, C110-C113, inductors L9, and L13, the GPS positioning chip U30 is used for position information of a user, a VDD _ LNA pin of the GPS positioning chip U30 is connected to an LDO _ RF _ OUT pin through the capacitors C107 and C108, and the capacitors C107 and C108 are connected in series and then connected in parallel to the inductor L13; the pins of V _ DCDC _ IN, VDD _ IO, V _ BCKP and LDO _ B _ OUT of the GPS positioning chip U30 are grounded through capacitors C111, C56, C112 and C113 respectively, the pin of V _ DCDC _ OUT of the GPS positioning chip U30 is grounded through an inductor L9 and a capacitor C110, the pin of V _ DCDC _ OUT of the GPS positioning chip U30 is grounded through a capacitor C110, and PIO _11 of the GPS positioning chip U30 is connected with the pin A1 of a main control chip U37B;
in a specific embodiment, as shown in fig. 6, the model of the GPS positioning chip is UBX-M8130-KT/UBLOX, and the GPS positioning chip further has a track recording function;
preferably, the display circuit comprises a display interface J7 and a capacitor C97, a VDD pin of the display interface J7 is grounded through the capacitor C97, and LTDC _ R3-LTDC _ R7, LTDC _ G2-LTDC _ G7 and LTDC _ B3-LTDCB7 pins of the display interface J7 are respectively connected with K10, K9, J10, J9, J8, J6, H6, N8, M8, L8, K7, H10, B8, C8, L7 and K6 pins of a main control chip U37B;
in a specific embodiment, the display circuit is a schematic circuit diagram, as shown in fig. 7, the display interface J7 may be a plug, and the display circuit is used to display not only the position information, the air pressure, the height value and the temperature data, but also the real-time speed, the average speed, the maximum speed, the current vertical speed, the average vertical rising speed, the average vertical falling speed, the exercise mileage, the calorie consumption, etc. of the user; the air pressure and temperature data specifically comprise real-time air pressure, real-time air temperature average air pressure and average air temperature in the user movement process;
preferably, the POWER-on circuit includes a POWER-on chip U35, capacitors C120 and C122, the GND1 and GND2 of the POWER-on chip U35 are grounded, the VBAT pin of the POWER-on chip U35 is grounded through the capacitor C120, and the POWER _ KEY pin of the POWER-on chip U35 is grounded through the capacitor C122;
in one embodiment, a schematic circuit diagram of the boot circuit is shown in fig. 8; the switch of the whole GPS code meter circuit is controlled by the starting circuit;
preferably, the GPS code table circuit further includes a backlight driving circuit, the backlight driving circuit includes a backlight driving chip U18, a capacitor L12, a resistor R57, a resistor R58 and a diode D5, an EN pin of the backlight driving chip U18 is grounded through a resistor R57, an FB pin of the backlight driving chip U18 is connected to a LEDK pin of the display J7 through a resistor R58, and an LX pin of the backlight driving chip U18 is connected to a LEDA pin of the display J7 through a diode D5;
in a specific embodiment, as shown in fig. 9, a circuit schematic diagram of the backlight driving circuit, the backlight driving chip U18 is LP3320B6F/LP, and supplies backlight to the LCD display screen by Boost;
preferably, the GPS code table circuit further comprises a memory circuit, the memory circuit comprises a memory chip U5, and MMCSD0_ D0-MMCSD0_ D7, MMCSD0_ RST, MMCSD0_ CMD and MMCSD0_ CLK pins of the memory chip U5 are respectively connected with F9, G13, D9, E9, C4, F11, G11, E11, D8 and F8 pins of the main control chip U37B;
in a specific embodiment, as shown in fig. 10, a schematic circuit diagram of the memory circuit includes the following types of the memory chip U5: THGBMNG5D1LBAIL/TOSHIBA for storing data (data acquired by barometer circuitry and GPS location circuitry) and off-line map packets;
preferably, the GPS code table circuit further includes a time management circuit, the time management circuit includes a time recording chip U14, capacitors C37, C48 and a crystal oscillator Y9, an OSCI pin of the time recording chip U14 is connected to one end of a capacitor C48, another end of the capacitor C48 is connected to one end of a capacitor C37, another end of the capacitor C37 is connected to an OSCO pin of a time recording chip U14, the crystal oscillator Y9 is connected between the OSCI and OSCO pins of the time recording chip U14, and SCL and SDA pins of the time recording chip U14 are respectively connected to F4 and F5 pins of a main control chip U37C;
in a specific embodiment, as shown in fig. 11, the time recording chip is a real-time clock for recording time,
preferably, the GPS code meter circuit further includes an accelerometer sensing circuit, the accelerometer sensing circuit includes an accelerometer sensor U34, capacitors C117, C118, and C119 and resistors R110 and R111, one end of the capacitors C117 and C118 is grounded after being connected in parallel, the other end of the capacitors C117 and C118 is connected to VDD _ IO pin of the accelerometer sensor U34, the VDD pin of the accelerometer sensor U34 is grounded through the capacitor C119, the ADC3 and RES pins of the accelerometer sensor U34 are connected, and the I2C1_ SDA, ACC _ INT1, and ACC _ INT2 pins of the accelerometer sensor U34 are connected to F5, E3, and H5 pins of the main control chip U37C, respectively;
in a specific embodiment, the GPS code table circuit further includes a charging circuit, the circuit schematic diagram of the charging circuit is shown in fig. 12, J4 is a charging connector, a chip U38 is used for preventing unstable high voltage surge breakdown, the model is SGM40655YTDF12G/TR/SGMICRO signal, U47 is used for controlling the charging state, the model is SGM4056-6.8YTDE8GTR/SGMICRO, and the charging circuit is connected with the power-on circuit;
it should be noted that, in the circuit that the present invention relates to, the pins with the same number are connected to each other, and the component parameter values, such as resistance value, capacitance value, etc., of the present invention can be adjusted according to actual needs.
The utility model discloses a GPS code table circuit, through barometer circuit acquires the atmospheric pressure, height value and the temperature data of user's surrounding environment, and will atmospheric pressure, height value and temperature data send to master control circuit, GPS positioning circuit acquires user's positional information, and positional information sends to master control circuit, master control circuit will positional information, atmospheric pressure, height value and temperature data carry out the interference filtering processing, and positional information, atmospheric pressure, height value and temperature data after the interference filtering are sent to display circuit; the functions of positioning the GPS code table and collecting the environmental information are realized through a simpler circuit structure.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (9)
1. A GPS code table circuit is characterized by comprising a main control circuit, a barometer circuit, a GPS positioning circuit, a display circuit and a starting circuit, wherein the main control circuit is respectively and electrically connected with the barometer circuit, the GPS positioning circuit, the display circuit and the starting circuit;
the main control circuit comprises a main control chip U37A, U37B, U37C, a crystal oscillator Y7, Y12 and capacitors C33, C39, C174 and C175, wherein a pin F1 of the main control chip U37C is connected with a pin G1 of the main control chip U37C through the crystal oscillator Y7, a pin F1 of the main control chip U37C is grounded through the capacitor C39, and a pin G1 of the main control chip U37C is grounded through the capacitor C33.
2. The GPS stopwatch circuit of claim 1, wherein the barometer circuit comprises a barometer U46, a VDD pin of the barometer U46 is connected to a CSB pin thereof, an SDO pin of the barometer U46 is connected to a GND pin thereof, and pins I2C1_ SCL and I2C1_ SDA of the barometer U46 are connected to pins F4 and F5 of a main control chip U37C, respectively.
3. The GPS code table circuit according to claim 1, wherein the GPS positioning circuit comprises a GPS positioning chip U30, capacitors C56, C107, C108, C110-C113, inductors L9 and L13, the GPS positioning chip U30 is used for position information of a user, a VDD _ LNA pin and an LDO _ RF _ OUT pin of the GPS positioning chip U30 are connected through the capacitors C107 and C108, and the capacitors C107 and C108 are connected in series and then connected in parallel with the inductor L13; the pins of V _ DCDC _ IN, VDD _ IO, V _ BCKP and LDO _ B _ OUT of the GPS positioning chip U30 are grounded through capacitors C111, C56, C112 and C113 respectively, the pin of V _ DCDC _ OUT of the GPS positioning chip U30 is grounded through an inductor L9 and a capacitor C110, the pin of V _ DCDC _ OUT of the GPS positioning chip U30 is grounded through a capacitor C110, and PIO _11 of the GPS positioning chip U30 is connected with the pin A1 of a main control chip U37B.
4. The GPS code table circuit of claim 1, wherein the display circuit comprises a display interface J7 and a capacitor C97, the VDD pin of the display interface J7 is grounded through a capacitor C97, and the LTDC _ R3-LTDC _ R7, LTDC _ G2-LTDC _ G7 and LTDC _ B3-LTDCB7 pins of the display interface J7 are respectively connected with the K10, K9, J10, J9, J8, J6, H6, N8, M8, L8, K7, H10, B8, C8, L7 and K6 pins of the main control chip U37B.
5. The GPS code table circuit of claim 1, wherein the POWER-on circuit comprises a POWER-on chip U35, capacitors C120 and C122, GND1 and GND2 of the POWER-on chip U35 are grounded, a VBAT pin of the POWER-on chip U35 is grounded through the capacitor C120, and a POWER _ KEY pin of the POWER-on chip U35 is grounded through the capacitor C122.
6. The GPS code table circuit of claim 1, further comprising a backlight driving circuit, wherein the backlight driving circuit comprises a backlight driving chip U18, a capacitor L12, resistors R57, R58 and a diode D5, the EN pin of the backlight driving chip U18 is grounded through a resistor R57, the FB pin of the backlight driving chip U18 is connected with the LEDK pin of the display J7 through a resistor R58, and the LX pin of the backlight driving chip U18 is connected with the LEDA pin of the display J7 through a diode D5.
7. The GPS code table circuit according to claim 1, characterized in that it further comprises a memory circuit, the memory circuit comprises a memory chip U5, the MMCSD0_ D0-MMCSD0_ D7, MMCSD0_ RST, MMCSD0_ CMD, MMCSD0_ CLK pins of the memory chip U5 are respectively connected with the F9, G13, D9, E9, C4, F11, G11, E11, D8, F8 pins of the master control chip U37B.
8. The GPS code table circuit according to claim 1, further comprising a time management circuit, wherein the time management circuit comprises a time recording chip U14, capacitors C37, C48 and a crystal oscillator Y9, the OSCI pin of the time recording chip U14 is connected to one end of a capacitor C48, the other end of the capacitor C48 is connected to one end of a capacitor C37, the other end of the capacitor C37 is connected to the OSCO pin of the time recording chip U14, the crystal oscillator Y9 is connected between the OSCI pin and the OSCO pin of the time recording chip U14, and the SCL pin and the SDA pin of the time recording chip U14 are respectively connected to the F4 pin and the F5 pin of the main control chip U37C.
9. The GPS stopwatch circuit of claim 1, further comprising an accelerometer sensing circuit, wherein the accelerometer sensing circuit comprises an accelerometer sensor U34, capacitors C117, C118, and C119, and resistors R110 and R111, the capacitors C117 and C118 are connected in parallel and have one end grounded and the other end connected to a VDD _ IO pin of an accelerometer sensor U34, the VDD pin of the accelerometer sensor U34 is grounded through the capacitor C119, the ADC3 and RES pins of the accelerometer sensor U34 are connected, and the I2C1_ SDA, ACC _ INT1 and ACC _ INT2 pins of the accelerometer sensor U34 are connected to the F5, E3 and H5 pins of the main control chip U37C, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485996.3U CN213779056U (en) | 2020-10-30 | 2020-10-30 | GPS code table circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022485996.3U CN213779056U (en) | 2020-10-30 | 2020-10-30 | GPS code table circuit |
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| Publication Number | Publication Date |
|---|---|
| CN213779056U true CN213779056U (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022485996.3U Active CN213779056U (en) | 2020-10-30 | 2020-10-30 | GPS code table circuit |
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| CN (1) | CN213779056U (en) |
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