A wireless data acquisition system for environmental testing of Android total station

Abstract

The utility model belongs to the technical field of surveying and mapping instruments, and discloses a wireless data acquisition system for environmental testing of an Android total station, comprising an environmental testing vehicle, a wireless vehicle-mounted control box, a temperature test chamber, a PC, and a wireless Bluetooth receiving module; the environmental testing vehicle and the wireless vehicle-mounted control box are placed in the temperature test chamber; it is characterized in that: the wireless Bluetooth receiving module is installed on the PC, the PC has a high and low temperature data acquisition module, the wireless vehicle-mounted control box performs wireless information interaction with an external host computer via Bluetooth, and uploads the collected data to the host computer, which makes a qualified judgment on the test results and saves the results to the server. The present application has the following main beneficial technical effects: simple structure, easy implementation, low cost, solves the problem that the staff needs to frequently enter and exit the test chamber to operate the instrument, and improves the work efficiency of the environmental test of the Android total station.

Description

Technical Field

[0001] The utility model belongs to the technical field of surveying and mapping instruments, and in particular discloses a wireless data acquisition system for an Android total station environmental test. Background Art

[0002] As a traditional surveying and mapping instrument, the total station has functions such as angle measurement and distance measurement. The total station is a precision measuring instrument and is widely used in engineering surveying, which causes the total station to face complex and changeable use environments. In order to test the actual use function of the total station under different conditions, the total station will be subjected to environmental tests during the manufacturing process of the total station. Usually, personnel are required to enter the test box at high and low temperatures to perform functional tests on the instruments one by one. Due to the frequent high and low temperatures, the operating efficiency of personnel cannot be improved, and it is also not conducive to physical health. The applicant has developed a wireless test device for environmental testing of total stations, which can automatically test the instrument functions under different ambient temperature conditions, reduce the frequent entry and exit of personnel in the test box, and improve operating efficiency. However, with the development of smart phones such as Android systems, the integration of Android systems and total station instruments has emerged, allowing total stations to run on Android systems, enriching their use functions, and at the same time, higher requirements are placed on the communication rate of sensors such as angles and compensators. The original wireless test device can no longer meet the requirements of environmental testing of Android total station instruments. Utility Model Content

[0003] To solve the above problems, the present application discloses a wireless data acquisition system for environmental testing of an Android total station, and the present application is implemented by adopting the following technical solutions.

[0004] A wireless data acquisition system for an Android total station environmental test comprises an environmental test vehicle, a wireless vehicle control box, a power cabinet, a 12V switching power supply, a temperature test chamber, a PC, and a wireless Bluetooth receiving module; the environmental test vehicle and the wireless vehicle control box are placed in the temperature test chamber; the system is characterized in that the wireless Bluetooth receiving module is installed on the PC, and the PC has a high and low temperature data acquisition module;

[0005] The wireless vehicle control box is composed of an upper shell, a first screw fixing, an Android communication line, a rubber plug, a base, an external hexagonal screw, a lower shell of the wireless vehicle control box, a wireless vehicle board, a second screw fixing, a board connector, a vehicle board, a Bluetooth module serial port socket, and a wireless Bluetooth transmitter module; the vehicle board is composed of a single-chip minimum system, a power supply system, a CAN bus system, a relay drive system, and a Bluetooth communication system circuit. The power supply system in the vehicle board is composed of a 12V power cord, a 2-core aviation power socket, a tooling battery, a 2-core aviation power supply plug, a power cabinet, and a 12V switching power supply; the power cabinet and the 12V switching power supply are located outside the temperature test chamber, and the 12V switching power supply supplies power to the electrical components in the wireless vehicle control box; wherein:

[0006] The main architecture of the board of the single-chip minimum system adopts the U4-GD32F303RBT6 chip, in which the G9 crystal oscillator is matched with C8, C9, and R1 to form an oscillator circuit, which is connected to the 5th and 6th pins of the U4 chip to provide an accurate clock source for the U4 chip; the 3rd pin of the U4 chip is connected to VCC, the 1st pin is connected to GND, and the 2nd pin is connected to the R3 ground resistor and then connected to the 7th pin of the U4 chip to provide a reset signal for it; the 1st and 3rd pins of the P18 socket are connected to VCC and GND respectively, the 4th pin is connected to the 46th pin of the U4 chip after being pulled up by the R30 resistor, the 5th pin is connected to the 46th pin of the U4 chip after being pulled down by the R29 resistor, and the 2nd pin is connected to the 7th pin of the U4 chip to realize the SWD mode programming of U4; the above circuits together constitute the minimum system of the U4 chip;

[0007] The power supply system uses the U1-TPS62160DSG chip to achieve DC12V to DC3.3V output. The power supply system circuit parameters all use the parameters recommended by the U1-TPS62160DSG chip manual. The R18 and R19 resistors form a voltage divider connected to the 5th pin of the U1-TPS62160DSG chip. Since the U1-TPS62160DSG chip works in the voltage adjustable mode, the voltage of the 5th pin is 0.8V, and the output voltage is 3.3V. The ratio of R18 / R19 is calculated to be 3.13. After selecting R19 as 115K (R19 needs to be less than 400K), it is concluded that R18 is 360K.

[0008] The CAN bus system uses the U3-SIT3051TK interface chip, and its 8-pin level is forced to be pulled low to put the chip in high-speed mode; the 5-pin level is forced to be pulled low to put the chip in current shutdown mode; the R35 resistor is connected in parallel between the 6- and 7-pins of the U3-SIT3051TK interface chip for impedance matching; the 3-pin of the D9-NUO2105L chip is grounded, and the 2-pin and 1-pin are connected to the 6-pin and 7-pin of the U3-SIT3051TK interface chip respectively, to protect the CAN transceiver in the high-speed and fault-tolerant network from ESD and other harmful transient voltage events, so as to improve the reliability of the system and meet strict EMI requirements;

[0009] The working principle of the driving circuit of the relay driving system is: when the I / O corresponding to the single-chip microcomputer wants to drive the corresponding relay switch, it first outputs a low-level signal to the optocoupler. When the optocoupler receives the low-level signal, the light-emitting diode inside the optocoupler lights up, so that the diodes at pins 3 and 4 of the optocoupler are turned on, driving the subsequent amplifier circuit to work, and then the relay is energized; conversely, when the I / O port outputs a high level, the light-emitting diode inside the optocoupler goes out, so that the diodes at pins 3 and 4 of the optocoupler are cut off, and the subsequent amplifier circuit cannot be driven to work, thereby disconnecting the relay; that is, G1-EL817 is used for photoelectric isolation; Q1-2SC1623 transistor is used to amplify the signal, driving the relay switch, and D1-M7 diode is used to protect the relay coil; the specific electrical connections are as follows: Pin 1 of R1 resistor is connected to VCC, and pin 2 is connected to pin 1 of G1-EL817; G1-EL817 Pin 2, 3, and 4 are connected to U4-GD32F303RBT6 chip, pin 4 is connected to VCC, and pin 1 of R5 resistor; pin 1 of Q1-2SC1623 is connected to pin 2 of R5 resistor, pin 3 is connected to GND, and pin 1 is connected to pin 1 of D1-M7 and pin 2 of J1-relay; pin 2 of D1-M7 is connected to VCC and pin 1 of J1-relay; the principles of the remaining 15 groups of relay drive circuits are the same;

[0010] The Bluetooth communication system uses the U5-BLK-MD-BC04 Bluetooth module to perform wireless Bluetooth data transmission with the host PC. The P19 socket is the Bluetooth module serial port for Bluetooth module initialization.

[0011] The working principle of the vehicle-mounted board is as follows: it waits on standby for the acquisition command from the host computer. When receiving the acquisition command from the host PC, the 16 I / O ports of the board's microcontroller drive the 16 relays to work in turn; when one I / O of the microcontroller drives one relay, the CAN bus of the instrument corresponding to the relay will be connected to the CAN bus of the board, thereby realizing the CAN communication between the instrument and the board to read the data of each sensor of the instrument and save it in the cache of the microcontroller; when the board receives the acquisition result command sent by the host PC, the board will upload the data cached by the microcontroller to the host PC through the wireless Bluetooth serial port.

[0012] The present application has the following main beneficial technical effects: simple structure, easy implementation, low cost, solves the problem that staff need to frequently enter and exit the test chamber to operate the instrument, and improves the work efficiency of environmental testing of Android total stations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the wireless acquisition system of the utility model.

[0014] Figure 2 This is a schematic diagram of the internal structure of the wireless vehicle control box.

[0015] Figure 3 This is a schematic diagram of the PC structure.

[0016] Figure 4 3D image of the test vehicle for environmental testing.

[0017] Figure 5 This is the circuit block diagram of the vehicle-mounted board.

[0018] Figure 6 for Figure 5 A magnified view of point A.

[0019] Figure 7 for Figure 5 An enlarged view of point B.

[0020] Figure 8 for Figure 5 Enlarged view of point C.

[0021] Fig. 9 for Figure 5 Enlarged view of point D.

[0022] Fig.10 This is the system composition block diagram of the acquisition system.

[0023] Fig.11 This is a schematic diagram of the vehicle board running state machine.

[0024] Fig.12 This is the communication flow chart between the host computer and the board.

[0025] Fig.13 Principle circuit of vehicle control board Figure 1 .

[0026] Fig.14 Principle circuit of the vehicle control board Figure 2 .

[0027] Fig.15 Principle circuit of vehicle control board Figure 3 .

[0028] Fig.16 This is a schematic diagram of the host computer acquisition interface.

[0029] Fig.17 This is the interface diagram of the upper computer qualification judgment.

[0030] Fig.18 This is the plan dimension drawing of the turnover vehicle. DETAILED DESCRIPTION

[0031] In order to enable personnel in the technical field to better understand and implement this patent, this application is now further described in detail in conjunction with the drawings in the specification.

[0032] Please see Figures 1 to 17 A wireless data acquisition system for an Android total station environmental test comprises an environmental test vehicle 1, a wireless vehicle control box 2, a power cabinet 12, a 12V switching power supply 13, a temperature test chamber 14, a PC 191, and a wireless Bluetooth receiving module 201; the environmental test vehicle 1 and the wireless vehicle control box 2 are placed in the temperature test chamber 14; the wireless Bluetooth receiving module 201 is installed on the PC 191, and the PC 191 has a high and low temperature data acquisition module;

[0033] The wireless vehicle control box 2 is composed of an upper shell, a cross-slot pan head screw 3, an Android communication line 4, a rubber plug 7, a base 8, an external hexagonal screw 9, a wireless vehicle control box lower shell 15, a wireless vehicle board 16, a cross-slot pan head screw 17, a board connector 18, a vehicle board, a Bluetooth module serial port socket 19, and a wireless Bluetooth transmitter module 20; the vehicle board is composed of a single-chip minimum system, a power system, a CAN bus system, a relay drive system, and a Bluetooth communication system circuit. The power system in the vehicle-mounted board card is composed of a 12V power cord 5, a 2-core aviation power socket 6, a 2-core aviation power socket, a tooling battery 10, a 2-core aviation power supply plug 11, a power cabinet 12, and a 12V switching power supply 13; the power cabinet 12 and the 12V switching power supply 13 are located outside the temperature test chamber 14, and the 12V switching power supply 13 supplies power to the electrical components in the wireless vehicle-mounted control box 2; among them: the main board architecture of the single-chip minimum system adopts the U4-GD32F303RBT6 chip, in which the G9 crystal oscillator is matched with C8, C9, R1 The oscillator circuit is formed, connecting the 5th and 6th pins of the U4 chip to provide an accurate clock source for the U4 chip; the 3rd pin of the U4 chip is connected to VCC, the 1st pin is connected to GND, the 2nd pin is connected to the R3 ground resistor and then connected to the 7th pin of the U4 chip to provide a reset signal for it; the 1st and 3rd pins of the P18 socket are connected to VCC and GND respectively, the 4th pin is pulled up by the R30 resistor and connected to the 46th pin of the U4 chip, the 5th pin is pulled down by the R29 resistor and connected to the 46th pin of the U4 chip, and the 2nd pin is connected to the 7th pin of the U4 chip to realize the SWD mode programming of the U4; the above circuits together constitute the minimum system of the U4 chip;

[0034] The power supply system uses the U1-TPS62160DSG chip to achieve DC12V to DC3.3V output. The power supply system circuit parameters all use the parameters recommended by the U1-TPS62160DSG chip manual. The R18 and R19 resistors form a voltage divider connected to the 5th pin of the U1-TPS62160DSG chip. Since the U1-TPS62160DSG chip works in the voltage adjustable mode, the voltage of the 5th pin is 0.8V, and the output voltage is 3.3V. The ratio of R18 / R19 is calculated to be 3.13. After selecting R19 as 115K (R19 needs to be less than 400K), it is concluded that R18 is 360K.

[0035] The CAN bus system uses the U3-SIT3051TK interface chip, and its 8-pin level is forced to be pulled low to put the chip in high-speed mode; the 5-pin level is forced to be pulled low to put the chip in current shutdown mode; the R35 resistor is connected in parallel between the 6- and 7-pins of the U3-SIT3051TK interface chip for impedance matching; the 3-pin of the D9-NUO2105L chip is grounded, and the 2-pin and 1-pin are connected to the 6-pin and 7-pin of the U3-SIT3051TK interface chip respectively, to protect the CAN transceiver in the high-speed and fault-tolerant network from ESD and other harmful transient voltage events, so as to improve the reliability of the system and meet strict EMI requirements;

[0036] The working principle of the driving circuit of the relay driving system is: when the I / O corresponding to the single-chip microcomputer wants to drive the corresponding relay switch, it first outputs a low-level signal to the optocoupler. When the optocoupler receives the low-level signal, the light-emitting diode inside the optocoupler lights up, so that the diodes at pins 3 and 4 of the optocoupler are turned on, driving the subsequent amplifier circuit to work, and then the relay is energized; conversely, when the I / O port outputs a high level, the light-emitting diode inside the optocoupler goes out, so that the diodes at pins 3 and 4 of the optocoupler are cut off, and the subsequent amplifier circuit cannot be driven to work, thereby disconnecting the relay; that is, G1-EL817 is used for photoelectric isolation; Q1-2SC1623 transistor is used to amplify the signal, driving the relay switch, and D1-M7 diode is used to protect the relay coil; the specific electrical connections are as follows: Pin 1 of R1 resistor is connected to VCC, and pin 2 is connected to pin 1 of G1-EL817; G1-EL817 Pin 2, 3, and 4 are connected to U4-GD32F303RBT6 chip, pin 4 is connected to VCC, and pin 1 of R5 resistor; pin 1 of Q1-2SC1623 is connected to pin 2 of R5 resistor, pin 3 is connected to GND, and pin 1 is connected to pin 1 of D1-M7 and pin 2 of J1-relay; pin 2 of D1-M7 is connected to VCC and pin 1 of J1-relay; the principles of the remaining 15 groups of relay drive circuits are the same;

[0037] The Bluetooth communication system uses the U5-BLK-MD-BC04 Bluetooth module to perform wireless Bluetooth data transmission with the host PC 191. The P19 socket is the Bluetooth module serial port for Bluetooth module initialization.

[0038] The working principle of the vehicle-mounted board is as follows: it waits for the acquisition instruction from the host computer. When receiving the acquisition instruction from the host PC 191, the 16 I / O ports of the board's single-chip microcomputer drive the 16 relays to work in turn; when one I / O of the chip drives one relay, the CAN bus of the instrument corresponding to the relay will be connected to the CAN bus of the board, so as to realize the CAN communication between the instrument and the board to read the data of each sensor of the instrument and save it in the cache of the single-chip microcomputer; when the board receives the acquisition result instruction sent by the host PC 191, the board will upload the data cached by the single-chip microcomputer to the host PC 191 through the wireless Bluetooth serial port;

[0039] The operation method of the vehicle-mounted board is as follows: wait for the acquisition instruction, collect after receiving the acquisition instruction, and send the measurement results in real time, and return to wait for the acquisition instruction after sending; acquisition: wait for the end of acquisition at the same time, and return to wait for the acquisition instruction after the acquisition ends or is completed;

[0040] The high and low temperature data acquisition module is developed based on Microsoft Excle2010 VBA. The host computer uses a wireless Bluetooth serial port to communicate with the vehicle-mounted board in real time. The host computer first sends a handshake signal to the board. After the board returns to normal, the host computer can select the test temperature (low temperature, normal temperature, high temperature), instrument status (front mirror status, reverse mirror status), and vehicle selection (1# vehicle, 2# vehicle); after the configuration is completed, the host computer can send a one-key acquisition command, and the vehicle-mounted board performs corresponding data acquisition according to the settings of the host computer. After the acquisition is completed, the data can be automatically sent back to the host computer for processing. The specific process is: start, the board is powered on and enters the standby state, and the host computer queries whether the board is ready, If the board is not ready, the host computer continues to wait and returns to the board to power on and enter the standby state; if the board is ready, the host computer sends a start acquisition command, and then determines whether the host computer sends a command to complete the acquisition. If so, the host computer sends an upload acquisition data command, and the board transmits the collected data back to the host computer, ending; if the acquisition is completed, the command is otherwise transferred to the host computer to continue waiting.

[0041] The method of using the acquisition system is as follows:

[0042] Step 1: Place the instruments to be tested on the base of the environmental test vehicle and lock the base (a fully loaded vehicle can hold 16 instruments), and connect the tooling battery and communication line to the instruments respectively;

[0043] Step 2: Push the environmental test vehicle into the environmental test chamber, insert the 2-core aviation plug 13 into the 2-core aviation socket 6 of the test vehicle, and turn on the 12V power switch 12; turn on the instruments to be tested in turn, then leave the test chamber and close the chamber door, and run the test chamber;

[0044] Step 3: When the temperature of the test box reaches the preset temperature value and the insulation is completed, run the host computer 'Android high and low temperature test.xls', configure the software according to the current vehicle number, temperature, and instrument status, and click the 'Automatic Collection' button; at this time, the host computer will automatically communicate with the vehicle-mounted board via wireless Bluetooth, and prompt 'Car No. X is collecting X mirror X temperature'; after the board data collection is completed, the data will be automatically sent back to the host computer, and a prompt will be prompted 'Car No. X mirror X temperature data collection and saving completed';

[0045] Step 4: Select the current date, then click the 'Import Data' button, the host computer software will automatically export the collected data to the table of the corresponding vehicle; click the 'One-click Complete' button, the host computer software will automatically make a qualified judgment and save the data; see the software collection and judgment interface Fig.16 , 17 :

[0046] Step 5: Close the test chamber, and the upper computer software will cut off the power supply for qualified instruments, and issue a rework order for unqualified instruments for repair.

[0047] In short, the working principle of the acquisition system in this application is: place the instrument to be tested on the environmental test vehicle, then put the environmental test vehicle into the temperature test chamber, connect the power supply and turn on the instrument, the on-board board of the environmental test vehicle communicates with the instrument to be tested on the vehicle through CAN, reads the working data of each sensor of the instrument, and saves it in the board cache; after the board receives the data acquisition instruction from the host computer, it communicates with the host computer wirelessly through the Bluetooth serial port, and uploads the data in the cache to the host computer; the host computer determines the qualified standard and saves the data based on the returned data.

[0048] The environmental test vehicle 1 in the present application includes an upper plate, a lower plate, four connecting rods, and four rollers. The upper plate is located above the lower plate. Each corner corresponding to the upper plate and the lower plate has a connecting rod, which fixes the corresponding upper plate and the lower plate. The lower end of the connecting rod extends out of the bottom surface of the lower plate. A roller is installed at the lower end of each connecting rod. The upper ends of the two connecting rods at the front end are combined with the lower surface of the upper plate, and the upper ends of the two connecting rods at the rear end extend upward from the upper surface of the upper plate. The upper ends of the two connecting rods at the rear end are bent obliquely upward away from the rear end of the upper plate, and a push rod 101 is connected between the upper ends of the two connecting rods at the rear end; the upper plate and the lower plate have the same structure, characterized in that eight instruments can be placed on both the upper plate and the lower plate, each plate is divided into eight areas, each area has a base 109, the base 109 is fixed to the plate surface by fixing screws 108, and the instrument is placed on the base 109. In order to distinguish, Figure 4In the figure, 106 indicates a 2-core aviation power socket, 105 indicates a tooling battery, 103 indicates a CAN communication line, 104 indicates a power line, 110 is an M4x70 cross slot pan head screw, and other fixings can also be used. The fixing screw 108 is a 108-M14x30 hexagon screw (flat washer + spring washer + nut). The function of the rubber ring 107 is to protect the cable, because the edge of the stainless steel plate opening is sharp, so as to prevent the cable from being cut; the function of the tooling battery 105 is to supply power to the instrument under test; the function of the CAN communication line 103 is to connect the vehicle-mounted board and the instrument under test for CAN communication; the function of the power line 104 is to be led out from the vehicle-mounted board to supply power to the instrument.

[0049] The wireless data acquisition system for environmental testing of an Android total station described above is characterized in that: the materials of the upper plate and the lower plate are both stainless steel.

[0050] This application solves the problem of wireless automatic data collection during environmental tests of Android total stations, and is a wireless automatic data collection system developed for data collection of environmental tests of Android total stations; this collection system adopts a vehicle-mounted control board to communicate with the instrument to be tested on the vehicle via CAN, obtains the working data of each sensor such as angle, distance measurement, compensation value, temperature and pressure of each instrument and saves it in the board cache, and wirelessly interacts with the host computer through the Bluetooth serial port on the board, uploads the collected data to the host computer, and the host computer makes a qualified judgment on the test results and saves the results to the server; this collection system can reduce the frequent entry and exit of personnel in the test box, greatly improving the work efficiency.

[0051] The test and qualified judgment method of the test results of an Android total station environmental test provided in this application are not limited to those described in the specification and implementation. The environmental test vehicle of this acquisition system can be replaced by other turnover vehicles or test benches; the chip architecture of the on-board board can be replaced by other chips; the wireless data communication module can be replaced by other communication modules; the high and low temperature module can be implemented using other programming languages, or it can be in the form of an integrated chip after the program is solidified.

[0052] In this application, a vehicle-mounted board is used to communicate with the Android total station in real time to obtain the working status of each sensor of the instrument at various temperatures, and upload the detection data to the host computer module through the wireless Bluetooth serial port of the board for analysis and judgment; thereby solving the need for personnel to frequently enter and exit the test chamber to operate the instrument and improving the work efficiency of the environmental test of the Android total station.

[0053] The above embodiments are only preferred technical solutions of the present utility model and should not be regarded as limitations of the present utility model. The protection scope of the present utility model shall be the technical solution recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solution recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present utility model.

Claims

1. A wireless data acquisition system for environmental testing of an Android total station, comprising an environmental testing vehicle, a wireless vehicle-mounted control box, a power cabinet, a 12V switching power supply, a temperature test chamber, a PC, and a wireless Bluetooth receiving module; the environmental testing vehicle and the wireless vehicle-mounted control box are placed in the temperature test chamber; the characteristics are: The wireless Bluetooth receiving module is installed on the PC, which has a high and low temperature data acquisition module; The wireless vehicle control box is composed of an upper shell, a first screw fixing, an Android communication line, a rubber plug, a base, an external hexagonal screw, a lower shell of the wireless vehicle control box, a wireless vehicle board, a second screw fixing, a board connector, a vehicle board, a Bluetooth module serial port socket, and a wireless Bluetooth transmitter module; the vehicle board is composed of a single-chip minimum system, a power supply system, a CAN bus system, a relay drive system, and a Bluetooth communication system circuit. The power supply system in the vehicle board is composed of a 12V power cord, a 2-core aviation power socket, a tooling battery, a 2-core aviation power supply plug, a power cabinet, and a 12V switching power supply; the power cabinet and the 12V switching power supply are located outside the temperature test chamber, and the 12V switching power supply supplies power to the electrical components in the wireless vehicle control box; wherein: The main architecture of the board of the single-chip minimum system adopts the U4-GD32F303RBT6 chip, in which the G9 crystal oscillator is matched with C8, C9, and R1 to form an oscillator circuit, which is connected to the 5th and 6th pins of the U4 chip to provide an accurate clock source for the U4 chip; the 3rd pin of the U4 chip is connected to VCC, the 1st pin is connected to GND, and the 2nd pin is connected to the R3 ground resistor and then connected to the 7th pin of the U4 chip to provide a reset signal for it; the 1st and 3rd pins of the P18 socket are connected to VCC and GND respectively, the 4th pin is connected to the 46th pin of the U4 chip after being pulled up by the R30 resistor, the 5th pin is connected to the 46th pin of the U4 chip after being pulled down by the R29 resistor, and the 2nd pin is connected to the 7th pin of the U4 chip to realize the SWD mode programming of U4; the above circuits together constitute the minimum system of the U4 chip; The power supply system uses the U1-TPS62160DSG chip to achieve DC12V to DC3.3V output. The power supply system circuit parameters use the parameters recommended by the U1-TPS62160DSG chip manual. The resistors R18 and R19 form a voltage divider connected to the 5th pin of the U1-TPS62160DSG chip. The U1-TPS62160DSG chip works in the voltage adjustable mode. The voltage of the 5th pin is 0.8V, the output voltage is 3.3V, the ratio of R18 / R19 is 3.13, R19 is 115K, and R18 is 360K. The CAN bus system uses the U3-SIT3051TK interface chip, and its 8-pin level is forced to be pulled low to put the chip in high-speed mode; the 5-pin level is forced to be pulled low to put the chip in current shutdown mode; the R35 resistor is connected in parallel between the 6- and 7-pins of the U3-SIT3051TK interface chip for impedance matching; the 3-pin of the D9-NUO2105L chip is grounded, and the 2-pin and 1-pin are connected to the 6-pin and 7-pin of the U3-SIT3051TK interface chip respectively, to protect the CAN transceiver in the high-speed and fault-tolerant network from ESD and harmful transient voltage events, so as to improve the reliability of the system and meet strict EMI requirements; The electrical connection of the relay drive system is as follows: R1 resistor pin 1 is connected to VCC, and pin 2 is connected to G1-EL817 pin 1; G1-EL817 pins 2, 3, and 4 are connected to U4- GD32F303RBT6 chip pin 4, VCC, and R5 resistor pin 1 respectively; Q1-2SC1623 pin 1 is connected to R5 resistor pin 2, pin 3 is connected to GND, and pin 1 is connected to D1-M7 pin 1 and J1-relay pin 2; D1-M7 pin 2 is connected to VCC and J1-relay pin 1; the electrical connections of the remaining 15 groups of relay drive systems are the same; The Bluetooth communication system uses the U5-BLK-MD-BC04 Bluetooth module to perform wireless Bluetooth data transmission with the host PC. The P19 socket is the Bluetooth module serial port for Bluetooth module initialization.

2. According to claim 1, a wireless data acquisition system for an Android total station environmental test is characterized in that The environmental test vehicle comprises an upper plate, a lower plate, four connecting rods and four rollers. The upper plate is located above the lower plate. Each corner corresponding to the upper plate and the lower plate is provided with a connecting rod. The connecting rod fixes the corresponding upper plate and the lower plate. The lower end of the connecting rod extends out of the bottom surface of the lower plate. A roller is installed at the lower end of each connecting rod. The upper ends of the two connecting rods at the front end are combined with the lower surface of the upper plate. The upper ends of the two connecting rods at the rear end extend upward from the upper surface of the upper plate. The upper ends of the two connecting rods at the rear end are bent obliquely upward away from the rear end of the upper plate. A push rod is connected between the upper ends of the two connecting rods at the rear end. The upper plate and the lower plate have the same structure. Eight instruments can be placed on the upper plate and the lower plate. Each plate is divided into eight areas. Each area has a base. The base is fixed to the plate surface by fixing screws, and the instrument is placed on the base.

3. The wireless data acquisition system for environmental testing of an Android total station according to claim 2 is characterized in that :The materials of the upper plate and the lower plate are both stainless steel.

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