CN209043442U - A kind of scale acquisition processing unit based on Bluetooth technology - Google Patents

A kind of scale acquisition processing unit based on Bluetooth technology Download PDF

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Publication number
CN209043442U
CN209043442U CN201822035755.1U CN201822035755U CN209043442U CN 209043442 U CN209043442 U CN 209043442U CN 201822035755 U CN201822035755 U CN 201822035755U CN 209043442 U CN209043442 U CN 209043442U
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feet
capacitor
connect
circuit
power supply
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阚伟伟
吴明明
殷雄
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Nantong Yunzhijian Intelligent Technology Co Ltd
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Nantong Yunzhijian Intelligent Technology Co Ltd
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Abstract

The scale acquisition processing unit based on Bluetooth technology that the utility model discloses a kind of, including singlechip chip, vehicle identification interface circuit, weighbridge interface circuit, power circuit, isolated power supply circuit, bluetooth module circuit and liquid crystal display;Vehicle identification interface circuit is used to receive the license board information of traffic;Weighbridge interface circuit receives the loading capacity for the vehicle that wagon balance sensing device is measured;Bluetooth module circuit is used to establish the connection of singlechip chip and mobile phone, and by vehicle identification information, vehicle capacity information is sent to mobile phone;Power circuit is connect for system power supply with singlechip chip;Liquid crystal display is connect for the collected information of more intuitive displaying scene with singlechip chip.The utility model by changing apparatus structure, using Bluetooth technology, collected weighbridge data are sent to mobile phone, then background server is sent to by mobile phone, solve the installation of existing scale acquisition system and control it is more complex, the problem of higher cost.

Description

A kind of scale acquisition processing unit based on Bluetooth technology
Technical field
The utility model belongs to information acquiring technology field, more particularly to a kind of novel wagon balance acquisition processing device.
Background technique
Weighbridge, also referred to as truck scale are the main weighing-appliances of bulk supply tariff metering.Its weight that can weigh is very huge Greatly, therefore it is widely used in the weighing of large-sized truck.Current many weight bridge weighings are manually to operate, i.e., load-carrying vehicle is opened Upper weighbridge manually sees title, then records that not only heavy workload, low efficiency need human attendance to this manual handling method, A large amount of manpowers are wasted, there is also lead to inaccurate problem of weighing due to record human error or intentional altered data.For this purpose, going out Show the weighbridge that can much weigh automatically, is not necessarily to personnel record, but this automatic weighing weighbridge needs to be equipped with computer, when Also it is necessary to ensure that computer can network when data need to be transmitted to background server, such cost greatly improves.And in mobile phone It substantially completely popularizes, Bluetooth technology is mature on the whole, today that 4G network almost covers, and checks data using mobile phone, sends Data are undoubtedly a kind of good selection.
Utility model content
Purpose of utility model: purpose of the utility model is to solve deficiencies in the prior art, provide one kind and are based on The scale acquisition processing unit of Bluetooth technology solves current weighbridge system wiring complexity, and cost is larger and data are easily tampered The problem of.
Technical solution: a kind of scale acquisition processing unit based on Bluetooth technology described in the utility model, including monolithic Machine core piece, vehicle identification interface circuit, weighbridge interface circuit, power circuit, isolated power supply circuit, bluetooth module circuit and liquid crystal Display;The singlechip chip be system core, the vehicle identification interface circuit, weighbridge interface circuit, power circuit, Bluetooth module circuit, liquid crystal display are connect with the singlechip chip;The vehicle identification interface circuit includes vehicle of marching into the arena Identification interface circuit and appearance vehicle identification interface circuit, for receiving the license board information of traffic;The weighbridge interface Circuit receives the loading capacity for the vehicle that wagon balance sensing device is measured;The bluetooth module circuit for establish singlechip chip with The connection of mobile phone, by vehicle identification information, vehicle capacity information is sent to mobile phone;The power circuit and singlechip chip connect It connects for system power supply;The liquid crystal display is connect for the collected letter of more intuitive displaying scene with singlechip chip Breath.
Further, the singlechip chip uses 1 foot and light emitting diode of STM32F407VGT6 chip U1, U1 The connection of LED1 cathode, 1 anode of Light-emitting diode LED connect+3.3V power supply, and 11,19,21,22,28,50,75,100 feet of U1 connect+ 3.3V power supply, 10,20,27, the 74 feet ground connection of U1,49 feet of U1 connect one end of capacitor C13, and 73 feet of U1 connect the one of capacitor C5 The other end of end, capacitor C13 and capacitor C5 are grounded, one end of the 94 foot connecting resistance R2 of U1, the other end ground connection of resistance R2.
Further, the bluetooth module circuit meets 3.3V power supply, U4 using 6,14 feet of WH-BLE103 module U4, U4 13,15 feet ground connection;One end of the 11 foot connecting resistance R11 of U4, the base stage of another termination triode Q1 of resistance R11, triode The emitter of Q1 is grounded, one end of the collector connecting resistance R10 of triode Q1 and 18 feet of singlechip chip U1, resistance R10's The cathode of other end sending and receiving optical diode LED2, the anode of Light-emitting diode LED 2 connect 3.3V power supply;The 16 foot connecting resistance R5 of U4, One end of resistance R6, one end of another terminating resistor R7 of resistance R5 and 1 foot of SMA connector J3, resistance R6, resistance R7 it is another 2,3,4,5 feet of one end and SMA connector J3 ground connection, 2,9,10 feet of U4 are coupled with 16,24, the 23 of singlechip chip U1 Foot.
Further, the power circuit include ID9307-33A50 chip U6, U6 2 feet ground connection, the one end capacitor C27 with 1,3 feet of U6 connect+5V power supply, the other end ground connection of capacitor C27;5 feet and capacitor C28, one end of capacitor C29 and the tantalum electricity of U6 The anode for holding CT2 connects+3.3V power supply, the cathode ground connection of capacitor C28, the other end of capacitor C29 and tantalum capacitor CT2.
Further, the isolated power supply circuit includes DC-DC module and ID9307-33A50 chip U11, the DC- DC module using 1 foot of B0505 module U12, U12 and a termination 5V power supply of capacitor C34, the other end of capacitor C34 and U12's Another termination of 4 feet of termination an isolated power supply ISO_5V, U12 of 2 feet ground connection, 6 feet of U12 and capacitor C35 and capacitor C35 every Liftoff ISO_GND;2 feet of U11 meet isolator ISO_GND, and 1,3 feet of the one end capacitor C31 and U11 meet isolated power supply+ISO_5V, Isolator ISO_GND, 5 feet and capacitor C32 of U11, the one of capacitor C33 terminate isolated power supply ISO_ to another termination of capacitor C31 Another termination isolator ISO_GND of 3.3V, capacitor C32, capacitor C33.
Further, it states singlechip chip and is also connected with SWD circuit, liquid crystal interface circuit, reset circuit.
Further, the SWD circuit includes row needle P2, and 1 foot of P2 meets one end of 3.3V power supply and resistance R4, resistance R4 Another termination P2 3 feet and singlechip chip U1 72 feet, 2 feet of P2 connect 76 feet of singlechip chip U1, and 4 feet of P2 connect Ground;
Liquid crystal interface circuit includes that 1,2,3 feet of FFC connector P3, P3 connect+5V power supply, and 5 feet of P3 connect singlechip chip 80 feet of U1,6 feet of P3 connect 83 feet of singlechip chip U1,8,9, the 10 feet ground connection of P3;
Reset circuit includes reset switch SW1, a terminating resistor R13 of reset switch SW1, one end of capacitor C25 and 14 feet of singlechip chip U1, the other end of reset switch SW1 and the other end of capacitor C25 are grounded, another termination of resistance R13 3.3V power supply.
Further, the vehicle identification interface circuit of marching into the arena includes 1 foot of SP3232 chip U2 and DB9 female J1, U2 One end of capacitor C7,3 feet of another termination U2 of capacitor C7 are connect, 4 feet of U2 connect one end of capacitor C9, another termination of capacitor C9 5 feet of U2,2 feet of U2 connect one end of capacitor C8, another termination 3.3V power supply of capacitor C8, and 6 feet of U2 connect the one of capacitor C11 End, the other end ground connection of capacitor C11,16 feet of U2 and a termination 3.3V power supply of capacitor C10, the other end ground connection of capacitor C10, 15 feet of U2 are grounded;11 feet of U2 connect 86 feet of singlechip chip U1, and 12 feet of U2 connect 87 feet of singlechip chip U1, and the 14 of U2 Foot connects 2 feet of DB9 female J1, and 13 feet of U2 connect 3 feet of DB9 female J1, the 5 feet ground connection of DB9 female J1;
Appearance vehicle identification interface circuit includes that 10 feet of SP3232 chip U2 and DB9 female J2, U2 connect singlechip chip 55 feet of U1,9 feet of U2 connect 56 feet of singlechip chip U1, and 7 feet of U2 connect 2 feet of DB9 female J2, and 8 feet of U2 connect DB9 female 3 feet of J2, the 5 feet ground connection of DB9 female J2.
Further, the weighbridge interface circuit includes 1 foot and capacitor of ISO3088 chip U7 and connecting terminal P5, U7 C30 meets 3.3V, and the other end of capacitor C30 and 2 feet of U7 are grounded, and 3 feet of U7 connect 64 feet of singlechip chip U1,4 feet of U7 and 5 Foot connects 62 feet of singlechip chip U1, and 6 feet of U7 connect 63 feet of singlechip chip U1,7 feet of U7,8 feet ground connection, 16 feet of U7 with Capacitor C26 meets isolated power supply ISO_3.3V, another termination of 9,10,15 feet of U7 and capacitor C26 isolator ISO_GND, U7's One end of 12 foot connecting resistance R16,1 foot of TVS pipe PSM712Z1, TBU chip U10 one end, the 13 foot connecting resistance R16's of U7 is another One end, Z1 2 feet, one end of TBU chip U8,3 feet of Z1 meet isolator ISO_GND, 1 foot of another termination U9 of U10 and 1 foot of P5,2 feet of another termination gas-discharge tube U9 of U8 and 2 feet of P5,3 feet of U9 meet isolator ISO_GND.
The utility model has the advantages that the utility model provides a kind of safety for the operation field equipped with wagon balance sensing device, reliably, The data sampling and processing scheme of low cost solves the problems, such as field wiring complexity in the way of wireless transmission, avoids work Industry scene must configure computer to check, save the inconvenience of data bring, reduce costs simultaneously;Title is manually seen for needs Operation field, the real effectiveness of initial data is effectively guaranteed in the utility model.
Detailed description of the invention
Fig. 1 is the whole functional block diagram of the utility model;
Fig. 2 is the singlechip chip circuit diagram of the utility model;
Fig. 3 is the bluetooth module circuit diagram of the utility model;
Fig. 4 is the circuit diagram of the power circuit of the utility model;
Fig. 5 is the circuit diagram of the isolated power supply circuit of the utility model;
Fig. 6 is the SWD interface circuit figure of the utility model;
Fig. 7 is the liquid crystal display interface circuit figure of the utility model;
The circuit diagram of the reset circuit of SCM of the position Fig. 8 the utility model;
Fig. 9 is the circuit diagram of the vehicle identification interface circuit of the utility model;
Figure 10 is the circuit diagram of the wagon balance sensing device interface circuit of the utility model.
Specific embodiment
Technical solution of the present invention is described in further detail combined with specific embodiments below.
As shown in Figure 1, the utility model is a kind of scale acquisition processing unit based on Bluetooth technology, including monolithic machine core Piece, vehicle identification interface circuit, weighbridge interface circuit, power circuit, isolated power supply circuit, bluetooth module circuit and liquid crystal display Device, singlechip chip are the core of system, and vehicle identification interface circuit receives the license board information of traffic, passes through 232 interfaces License plate number is sent to singlechip chip with data transmittal and routing form;Weighbridge interface circuit receives the vehicle that wagon balance sensing device is measured Loading capacity, the loading capacity of vehicle is sent to by singlechip chip with data transmittal and routing form by 485 interfaces;Bluetooth module electricity Road is used to establish the connection of single-chip microcontroller and mobile phone, is connected between bluetooth module circuit and single-chip microcontroller by serial ports, single-chip microcontroller is with AT The form of instruction configures bluetooth module, and after system electrification, it is current that single-chip microcontroller passes through AT instructions query bluetooth module first Configuration information resets the information needed to configure when current configuration information is with set Asymmetry information etc., then will be blue Tooth module is restarted, and mobile phone connection is waited, and after mobile phone is connect with bluetooth module, while single-chip microcontroller obtains vehicle identification information, vehicle When the information such as loading capacity, single-chip microcontroller transmits these information to mobile phone by bluetooth module;Power circuit and singlechip chip Connection is used for system power supply;Liquid crystal display is connect with singlechip chip by serial ports, and single-chip microcontroller is passed through by liquid crystal display Communications protocol change the information of screen display in real time, the information of screen display includes: current time, license plate number, disengaging field letter Breath, loading capacity, current Bluetooth connection.
As shown in Fig. 2, singlechip chip is negative using 1 foot and Light-emitting diode LED 1 of STM32F407VGT6 chip U1, U1 Pole connection, 1 anode of Light-emitting diode LED connect+3.3V power supply, and 11,19,21,22,28,50,75,100 feet of U1 connect+3.3V electricity Source, 10,20,27, the 74 feet ground connection of U1,49 feet of U1 connect one end of capacitor C13, and 73 feet of U1 connect one end of capacitor C5, capacitor The other end of C13 and C5 is grounded, one end of the 94 foot connecting resistance R2 of U1, the other end ground connection of R2.LED1 is used to indicate STM32F407VGT6 chip operation state.
As shown in figure 3, the low-power consumption bluetooth series of modules that bluetooth module circuit uses someone's Internet of Things company to release, preferentially 3.3V, 13,15 feet ground connection are connect using 6,14 feet of WH-BLE103 module U4, U4.One end of the 11 foot connecting resistance R11 of U4, R11 Another termination triode Q1 base stage, the emitter ground connection of Q1, one end of the collector connecting resistance R10 of Q1 and single-chip microcontroller U1's 18 feet, the cathode of the other end sending and receiving optical diode LED2 of resistance R10, the anode of LED2 meet 3.3V.The 16 foot connecting resistance R5 of U4, One end of R6, one end of another terminating resistor R7 of resistance R5 and 1 foot of SMA connector J3, the other end of resistance R6, R7 and 2,3,4,5 feet of J3 are grounded.2,9,10 feet of U4 are coupled with 16,24,23 feet of single-chip microcontroller U1.Bluetooth module with STM32F407VGT6 chip can configure the name of bluetooth module by serial communication, by AT instruction, connection enables, connection The functions such as password.LED2 is for showing the current connection status of bluetooth module.
As shown in figure 4, power circuit includes the 2 feet ground connection of ID9307-33A50 chip U6, U6.The one end capacitor C27 and U6 1,3 feet meet+5V, the other end ground connection of C27.5 feet of U6 and capacitor C28, one end of C29 and the anode of tantalum capacitor CT2 connect+ The other end of 3.3V, C28, C29 and the cathode ground connection of CT2.5V input voltage is passed through LDO ID9307-33A50 by the circuit 3.3V voltage is obtained to be powered to be all with electrical chip.
As shown in figure 5, isolated power supply circuit includes DC-DC module and ID9307-33A50 chip U11, DC-DC module 1 foot of preferential B0505 the module U12, U12 released using Jin Shengyang company and a termination 5V of capacitor C34, the other end of C34 It is grounded with 2 feet of U12,4 feet of termination an isolated power supply ISO_5V, U12 of 6 feet and capacitor C35 of U12 are another with capacitor C35's One terminates isolator ISO_GND.2 feet of U11 meet isolator ISO_GND.1,3 feet of the one end capacitor C31 and U11 connect isolated power supply Another termination of+ISO_5V, C31 isolator ISO_GND.5 feet and capacitor C32 of U11, a termination isolated power supply ISO_ of C33 The other end of 3.3V, C32, C33 are to meet isolator ISO_GND.Isolation circuit is isolated by 5V input voltage, and outside is avoided to connect The interference that mouth generates has an impact system.
It is also connected on singlechip chip U1 by SWD circuit, liquid crystal interface circuit, reset circuit.
As shown in fig. 6, SWD circuit includes row needle P2,1 foot of P2 connects one end of 3.3V and resistance R4, another termination of R4 3 feet of P2 and 72 feet of single-chip microcontroller U1,2 feet of P2 connect 76 feet of U1, the 4 feet ground connection of P2
As shown in fig. 7, liquid crystal interface circuit includes that 1, the 2 of FFC connector P3, P3,3 feet meet+5V, 5 feet of P3 connect U1's 80 feet, 6 feet of P3 connect 83 feet of U1,8,9, the 10 feet ground connection of P3.5 cun of capacitance plates that liquid crystal display uses enlightening literal arts skill to release DMT85480C050_07W, the screen and STM32F407VGT6 chip are by serial communication, can be with using the communications protocol of offer Easily to needing control to be shown to operate on screen, a friendly user interface is provided.
As shown in figure 8, reset circuit includes reset switch SW1, one end of a terminating resistor R13 of SW1, capacitor C25's 14 feet of one end and U1, the other end of SW1 and the other end of C25 are grounded, another termination 3.3V of R13.Since single-chip microcontroller is low Level resets, and when the moment powered on, due to capacitor charge and discharge, capacitor is considered as short circuit in this moment, and therefore, the end NRST is Low level, this pin connect the NRST mouth of single-chip microcontroller, i.e. reset pin, and such single-chip microcontroller low level resets, similarly, when button S1 is pressed When lower, capacitor is short-circuited, monolithic processor resetting.
As shown in figure 9, vehicle identification interface includes march into the arena vehicle identification interface circuit and appearance vehicle identification interface circuit, Vehicle identification of marching into the arena interface circuit includes that 1 foot of SP3232 chip U2 and DB9 female J1, U2 connect one end of capacitor C7, and C7's is another 3 feet of one termination U2,4 feet of U2 connect one end of capacitor C9,5 feet of another termination U2 of C9, and 2 feet of U2 connect the one of capacitor C8 End, another termination 3.3V of C8,6 feet of U2 connect one end of capacitor C11, the other end ground connection of C11,16 feet and capacitor C10 of U2 One termination 3.3V, C10 the other end ground connection, U2 15 feet ground connection.11 feet of U2 connect 86 feet of single-chip microcontroller U1, and 12 feet of U2 connect 87 feet of U1,14 feet of U2 connect 2 feet of J1, and 13 feet of U2 connect 3 feet of J1, the 5 feet ground connection of J1.
Appearance vehicle identification interface circuit includes that 10 feet of SP3232 chip U2 and DB9 female J2, U2 meet 55 feet of U1, U2 9 feet connect 56 feet of U1,7 feet of U2 connect 2 feet of J2, and 8 feet of U2 connect 3 feet of J2, the 5 feet ground connection of J2.Vehicle identification interface is set 232 interfaces are set to, for obtaining the license plate number of traffic, but the vehicle identification equipment at general scene passes through network cable transmission number According to, therefore this practical example needs to configure RJ45 and turns serial port module and carry out vehicle identification equipment to dock with the interface of system.
As shown in Figure 10, weighbridge interface circuit includes ISO3088 chip U7 and connecting terminal P5,1 foot and capacitor C30 of U7 3.3V is met, the other end of capacitor C30 and 2 feet of U7 are grounded, and 3 feet of U7 connect 64 feet of single-chip microcontroller U1, and 4 feet and 5 feet of U7 meet U1 62 feet, 6 feet of U7 connect 63 feet of U1, and 7 feet of U7,8 feet ground connection, 16 feet and capacitor C26 of U7 meet isolated power supply ISO_3.3V, Another termination of 9,10,15 feet of U7 and C26 isolator ISO_GND, one end of the 12 foot connecting resistance R16 of U7, TVS pipe 1 foot of PSM712Z1, one end of TBU chip U10, the other end of the 13 foot connecting resistance R16 of U7,2 feet of Z1, TBU chip U8's One end, 3 feet of Z1 connect isolator ISO_GND, 1 foot of the other end U9 of U10 and 1 foot of P5, and another termination gas of U8 is put 2 feet of fulgurite U9 and 2 feet of P5,3 feet of U9 meet isolator ISO_GND.Weighbridge interface is by way of 485 buses and live Wagon balance sensing device connection, since wagon balance sensing device is typically placed in outdoor, it is contemplated that EMC, the various interference such as surge can make this reality It can not work normally or even damage the system with novel system, therefore TVS is added in this practical example, TBU, GDT protect device And isolation circuit, to enhance system rejection to disturbance ability and protect system not damage during electric current instantaneous variation.
For the operation field that wagon balance sensing device is housed, the utility model provides a kind of safety, reliably, inexpensive number According to acquisition, processing scheme, solves the problems, such as field wiring complexity in the way of wireless transmission, it is necessary to avoid operation field Computer is configured to check, the inconvenience of data bring is saved, reduces costs simultaneously;Manually see that the operation of title is existing for needs , the real effectiveness of initial data is effectively guaranteed in the utility model.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model Limitation be not intended to limit the utility model although the utility model has been disclosed with preferred embodiment as above, it is any ripe Professional and technical personnel is known, is not being departed within the scope of technical solutions of the utility model, when in the technology using the disclosure above Hold the equivalent embodiment made a little change or be modified to equivalent variations, but all without departing from technical solutions of the utility model Hold, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention, still It is within the scope of the technical solutions of the present invention.

Claims (9)

1. a kind of scale acquisition processing unit based on Bluetooth technology, it is characterised in that: connect including singlechip chip, vehicle identification Mouth circuit, weighbridge interface circuit, power circuit, isolated power supply circuit, bluetooth module circuit and liquid crystal display;The single-chip microcontroller Chip is the core of system, the vehicle identification interface circuit, weighbridge interface circuit, power circuit, bluetooth module circuit, liquid crystal Display is connect with the singlechip chip;The vehicle identification interface circuit include march into the arena vehicle identification interface circuit and go out Field vehicle identification interface circuit, for receiving the license board information of traffic;The weighbridge interface circuit receives wagon balance sensing device The loading capacity for the vehicle measured;The bluetooth module circuit is used to establish the connection of singlechip chip and mobile phone, by vehicle Identification information, vehicle capacity information are sent to mobile phone;The power circuit is connect for system power supply with singlechip chip;Institute Liquid crystal display is stated to be connect with singlechip chip for the collected information of more intuitive displaying scene.
2. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 1, it is characterised in that: the list Piece machine core piece is connect using 1 foot of STM32F407VGT6 chip U1, U1 with 1 cathode of Light-emitting diode LED, light emitting diode LED1 anode connects+3.3V power supply, and 11,19,21,22,28,50,75,100 feet of U1 connect+3.3V power supply, and 10,20,27, the 74 of U1 Foot ground connection, 49 feet of U1 connect one end of capacitor C13, and 73 feet of U1 connect one end of capacitor C5, the other end of capacitor C13 and capacitor C5 Ground connection, one end of the 94 foot connecting resistance R2 of U1, the other end ground connection of resistance R2.
3. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 1, it is characterised in that: the indigo plant Tooth modular circuit connects 3.3V power supply, 13, the 15 feet ground connection of U4 using 6,14 feet of WH-BLE103 module U4, U4;11 feet of U4 connect One end of resistance R11, the base stage of another termination triode Q1 of resistance R11, the emitter ground connection of triode Q1, triode Q1's One end of collector connecting resistance R10 and 18 feet of singlechip chip U1, the other end sending and receiving optical diode LED2's of resistance R10 is negative Pole, the anode of Light-emitting diode LED 2 connect 3.3V power supply;One end of the 16 foot connecting resistance R5 of U4, resistance R6, resistance R5's is another One end of terminating resistor R7 and 1 foot of SMA connector J3, resistance R6, the 2 of the other end of resistance R7 and SMA connector J3,3, 4,5 feet are grounded, and 2,9,10 feet of U4 are coupled with 16,24,23 feet of singlechip chip U1.
4. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 1, it is characterised in that: the electricity Source circuit includes that 2 feet of ID9307-33A50 chip U6, U6 are grounded, and 1,3 feet of the one end capacitor C27 and U6 connect+5V power supply, capacitor The other end of C27 is grounded;5 feet of U6 and the anode of capacitor C28, one end of capacitor C29 and tantalum capacitor CT2 connect+3.3V power supply, The cathode of capacitor C28, the other end of capacitor C29 and tantalum capacitor CT2 are grounded.
5. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 1, it is characterised in that: it is described every It include DC-DC module and ID9307-33A50 chip U11 from power circuit, the DC-DC module uses B0505 module U12, 1 foot of U12 and a termination 5V power supply of capacitor C34, the other end of capacitor C34 and 2 feet of U12 are grounded, 6 feet and capacitor of U12 Another termination of a termination isolated power supply ISO_5V of C35,4 feet of U12 and capacitor C35 isolator ISO_GND;2 feet of U11 connect 1,3 feet of isolator ISO_GND, the one end capacitor C31 and U11 connect isolated power supply+ISO_5V, another termination isolation of capacitor C31 5 feet of ground ISO_GND, U11 and capacitor C32, termination an isolated power supply ISO_3.3V, capacitor C32 of capacitor C33, capacitor C33 It is another to terminate isolator ISO_GND.
6. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 1, it is characterised in that: the list Piece machine core piece is also connected with SWD circuit, liquid crystal interface circuit, reset circuit.
7. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 6, it is characterised in that: described SWD circuit includes row needle P2, and 1 foot of P2 connects one end of 3.3V power supply and resistance R4,3 feet and list of another termination P2 of resistance R4 72 feet of piece machine core piece U1,2 feet of P2 connect 76 feet of singlechip chip U1, the 4 feet ground connection of P2;
Liquid crystal interface circuit includes that 1,2,3 feet of FFC connector P3, P3 connect+5V power supply, and 5 feet of P3 connect singlechip chip U1's 80 feet, 6 feet of P3 connect 83 feet of singlechip chip U1,8,9, the 10 feet ground connection of P3;
Reset circuit includes reset switch SW1, a terminating resistor R13 of reset switch SW1, one end of capacitor C25 and monolithic 14 feet of machine core piece U1, the other end of reset switch SW1 and the other end of capacitor C25 are grounded, another termination 3.3V of resistance R13 Power supply.
8. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 1, it is characterised in that: it is described into Field vehicle identification interface circuit includes that 1 foot of SP3232 chip U2 and DB9 female J1, U2 connect one end of capacitor C7, capacitor C7's 3 feet of another termination U2,4 feet of U2 connect one end of capacitor C9,5 feet of another termination U2 of capacitor C9, and 2 feet of U2 meet capacitor C8 One end, another termination 3.3V power supply of capacitor C8,6 feet of U2 connect one end of capacitor C11, the other end ground connection of capacitor C11, U2 16 feet and capacitor C10 one termination 3.3V power supply, capacitor C10 the other end ground connection, U2 15 feet ground connection;The 11 foot orders of U2 86 feet of piece machine core piece U1,12 feet of U2 connect 87 feet of singlechip chip U1, and 14 feet of U2 connect 2 feet of DB9 female J1, and the 13 of U2 Foot connects 3 feet of DB9 female J1, the 5 feet ground connection of DB9 female J1;
Appearance vehicle identification interface circuit includes that 10 feet of SP3232 chip U2 and DB9 female J2, U2 connect singlechip chip U1's 55 feet, 9 feet of U2 connect 56 feet of singlechip chip U1, and 7 feet of U2 connect 2 feet of DB9 female J2, and 8 feet of U2 connect DB9 female J2's 3 feet, the 5 feet ground connection of DB9 female J2.
9. a kind of scale acquisition processing unit based on Bluetooth technology according to claim 1, it is characterised in that: describedly Pound interface circuit includes that 1 foot of ISO3088 chip U7 and connecting terminal P5, U7 and capacitor C30 meet 3.3V, and capacitor C30's is another End and 2 feet of U7 are grounded, and 3 feet of U7 connect 64 feet of singlechip chip U1, and 4 feet and 5 feet of U7 connect 62 feet of singlechip chip U1, 6 feet of U7 connect 63 feet of singlechip chip U1,7 feet of U7,8 feet ground connection, and 16 feet and capacitor C26 of U7 meet isolated power supply ISO_ Another termination of 9,10,15 feet of 3.3V, U7 and capacitor C26 isolator ISO_GND, one end of the 12 foot connecting resistance R16 of U7, One end of 1 foot of TVS pipe PSM712Z1, TBU chip U10,2 feet of the other end of the 13 foot connecting resistance R16 of U7, Z1, TBU chip One end of U8,3 feet of Z1 connect isolator ISO_GND, 1 foot of another termination U9 of U10 and 1 foot of P5, another termination of U8 2 feet of gas-discharge tube U9 and 2 feet of P5,3 feet of U9 meet isolator ISO_GND.
CN201822035755.1U 2018-12-05 2018-12-05 A kind of scale acquisition processing unit based on Bluetooth technology Active CN209043442U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112362147A (en) * 2020-11-25 2021-02-12 上海中通吉网络技术有限公司 Weighing method, weighing instrument and system of logistics vehicle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112362147A (en) * 2020-11-25 2021-02-12 上海中通吉网络技术有限公司 Weighing method, weighing instrument and system of logistics vehicle

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