CN114384840A - Control system of total station - Google Patents
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- CN114384840A CN114384840A CN202111652328.8A CN202111652328A CN114384840A CN 114384840 A CN114384840 A CN 114384840A CN 202111652328 A CN202111652328 A CN 202111652328A CN 114384840 A CN114384840 A CN 114384840A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
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Abstract
The invention discloses a control system of a total station, which comprises a total station control box, a server and a control terminal, wherein the total station control box is in communication connection with the control terminal through the server, the total station control box is also electrically connected with the total station, and the total station control box comprises a main control unit, a 4G communication unit and an RS232 serial port communication unit, wherein the main control unit is respectively and electrically connected with the 4G communication unit and the RS232 serial port communication unit, the 4G communication unit is in communication connection with the server, and the RS232 serial port communication unit is electrically connected with the total station; the invention can realize the all-weather all-time on-line of the total station and the off-line unattended operation and control of the total station, and in addition, because the manual on-site measurement is not needed, the working intensity of measuring personnel is reduced, and the measuring precision is also improved.
Description
Technical Field
The invention belongs to the technical field of automatic control of total stations, and particularly relates to a control system of a total station.
Background
With the continuous strengthening of infrastructure construction in China, a large number of large-scale projects such as dams, side slopes, tunnels, bridges, super high-rise buildings and the like appear in the whole country, construction measurement is indispensable in the project construction, and at present, measurement in the field in China is mainly realized through a total station so as to ensure the normal operation of construction.
The total station, namely the total station type electronic distance measuring instrument, is a high-tech measuring instrument integrating electronic theodolite, photoelectric distance measuring instrument and microprocessor, and is a surveying and mapping instrument system integrating horizontal angle, vertical angle, distance (slant distance and horizontal distance) and height difference measuring functions, and can replace manual optical micrometric reading with automatic recording and displaying reading, so that the angle measuring operation is simplified, and the generation of reading error can be avoided.
At present, the total station is used in the following manner: the measurement is realized by the field operation of the measuring personnel, the problems of high working strength of the measuring personnel, incapability of full coverage in the measuring period and low measurement precision exist in the mode, and therefore the working strength of the measuring personnel is reduced and the measurement precision is improved while the full coverage of the measuring period of the total station is ensured, and the problem to be solved urgently is solved.
Disclosure of Invention
The invention aims to provide a control system of a total station, which aims to solve the problems that the working intensity is high, the measuring time period cannot be fully covered and the measuring precision is low in the existing total station adopting field operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a control system of a total station, comprising: the total station comprises a total station control box, a server and a control terminal;
the total station control box is in communication connection with the control terminal through the server and is used for receiving a control instruction sent by the control terminal;
the total station control box is also electrically connected with a total station and used for transmitting the control instruction to the total station so that the total station acts according to the control instruction;
the total station control box comprises a main control unit, a 4G communication unit and an RS232 serial port communication unit, wherein the main control unit is electrically connected with the 4G communication unit and the RS232 serial port communication unit respectively;
the 4G communication unit is in communication connection with the server and is used for receiving the control instruction;
the RS232 serial port communication unit is electrically connected to the total station, and is configured to transmit the control instruction to the total station and/or receive measurement data transmitted by the total station, and the 4G communication unit is further configured to transmit the measurement data to the server.
Based on the disclosure, the total station is provided with the total station control box, so that the total station control box is utilized to establish the communication connection between the total station and the server and the control terminal, and therefore, a measurer can remotely operate the total station through the control terminal to perform construction measurement, the whole-day and whole-time online of the total station and the offline unattended operation and control of the total station are realized.
In one possible design, the 4G communication unit includes: the device comprises an EC20 CEHCLG-MINIPIE-CB type 4G communication chip, a first level conversion circuit and a second level conversion circuit;
the receiving end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip is electrically connected with the sending end of the main control unit through a first level conversion circuit, and the sending end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip is electrically connected with the receiving end of the main control unit through a second level conversion circuit so as to carry out level conversion between ports through the first level conversion circuit and the second level conversion circuit.
Based on the above disclosure, since the voltages of the I/O ports of the main control unit and the 4G communication unit are different, a level shift circuit needs to be arranged to implement level shift between the two ports, so as to ensure the normal operation of the 4G communication unit.
In one possible design, the first level shift circuit includes: the circuit comprises a first triode, a first resistor, a second resistor and a first capacitor;
an emitter of the first triode is electrically connected with a sending end of the main control unit, a collector of the first triode is electrically connected with a receiving end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip, and a base of the first triode is electrically connected with a common connection end of the first capacitor and the first resistor;
the other common connection end of the first capacitor and the first resistor is electrically connected with a first power supply end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip, and the second resistor is connected in parallel between the power supply end and a receiving end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip.
In one possible design, the second level shift circuit includes: the second triode, the third resistor, the fourth resistor and the second capacitor;
an emitter of the second triode is electrically connected with a transmitting end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip, a collector of the second triode is electrically connected with a receiving end of the main control unit, and a base of the second triode is electrically connected with a common connecting end of the third resistor and the second capacitor respectively;
the other common connection end of the third resistor and the second capacitor is electrically connected with a first power supply end of the EC20 CEHCLG-MINICIE-CB type 4G communication chip, and a collector electrode of the second triode is electrically connected with a 3.3V direct-current power supply through the fourth resistor.
In one possible design, the 4G communication unit further includes: a communication power supply circuit and a filter circuit;
the communication power supply circuit adopts an MIC29302WU-TR type low-dropout voltage stabilizing chip;
the input end of the MIC29302WU-TR type low-dropout regulator chip is electrically connected with a 5V direct-current power supply, the output end of the MIC29302WU-TR type low-dropout regulator chip is connected with 3.8V direct-current voltage, and the second power supply end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip is electrically connected through the filter circuit.
Based on the above disclosure, by providing the communication power supply circuit, the voltage of the external power supply can be converted into the working voltage of the 4G communication chip, so as to ensure the normal operation of the 4G communication chip, and meanwhile, the filter circuit can reduce the alternating current component in the pulsating direct current voltage in the power supply as much as possible, retain the direct current component thereof, reduce the ripple factor of the output voltage, make the waveform smoother, so as to ensure the stable power supply to the communication chip, thereby improving the stability of the operation of the communication chip.
In one possible design, the total station control box further includes: a power supply unit, wherein the power supply unit includes an AC-DC conversion circuit, a first step-down circuit, and a second step-down circuit;
the input end of the AC-DC conversion circuit is electrically connected with an alternating current power supply, the output end of the AC-DC conversion circuit is electrically connected with the input end of the first voltage reduction circuit, and the output end of the first voltage reduction circuit outputs 5V direct current voltage to supply power for the 4G communication unit;
the output end of the first voltage reduction circuit is also electrically connected with the input end of the second voltage reduction circuit, and the output end of the second voltage reduction circuit outputs 3.3V direct-current voltage to supply power for the main control unit and the RS232 serial port communication unit.
Based on the above disclosure, by providing two voltage reduction units, the power supply to the aforementioned circuit units can be satisfied, that is, the voltage output by the first voltage reduction unit supplies power to the 4G communication unit, and the voltage output by the second voltage reduction unit supplies power to the main control unit and the RS32 serial communication unit, so that the normal operation of the whole control box can be ensured.
In one possible design, the AC-DC conversion circuit adopts an IRM-60-12 type AC-DC conversion chip and peripheral circuits thereof, the first voltage reduction circuit adopts an LM2596SX-5.0/NOPB type voltage reduction chip and peripheral circuits thereof, and the second voltage reduction circuit adopts an AMS1117-33 type low-voltage reduction voltage stabilization chip and peripheral circuits thereof.
In one possible design, a panel indicator lamp electrically connected with the main control unit is further arranged on the total station control box; through the design, the panel indicator lamp can be used for indicating the state of the control box, so that a measurer can conveniently master the running state of the control box in real time and maintain the control box in time when a fault occurs; thus, the convenience of use is improved.
In one possible design, the RS232 serial port communication unit employs a MAX3232EEAE type transceiver chip and its peripheral circuits.
In one possible design, the main control unit adopts an STM32F103RCT6 type processing chip and peripheral circuits thereof.
Drawings
Fig. 1 is a system block diagram of a control system of a total station provided by the present invention;
fig. 2 is a schematic structural diagram of a total station control box provided by the present invention;
FIG. 3 is a specific circuit diagram of an IO pin of a main control unit provided in the present invention;
fig. 4 is a connection circuit diagram of an IO pin of a main control unit provided by the present invention;
FIG. 5 is a specific circuit diagram of a 4G communication chip provided by the present invention;
FIG. 6 is a diagram of the peripheral circuitry of a 4G communication chip provided by the present invention;
fig. 7 is a specific circuit diagram of the first level shift circuit and the second level shift circuit provided in the present invention;
fig. 8 is a specific circuit diagram of a communication power supply circuit and a filter circuit provided by the present invention;
FIG. 9 is a specific circuit diagram of an RS232 serial port communication unit provided by the present invention;
fig. 10 is a specific connection circuit diagram of the AC-DC conversion circuit and the first voltage reduction circuit provided by the present invention;
FIG. 11 is a specific connection circuit diagram of the second voltage-reducing circuit provided by the present invention;
fig. 12 is a specific circuit diagram of the panel indicating lamp of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
Examples
As shown in fig. 1 and fig. 2, the control system of the total station provided in this embodiment is applied to automatic control of each total station and real-time uploading of measurement data in the total station, that is, a total station control box is provided in the control system, and the total station establishes communication connection with a server and a control terminal through the control box, so that a measurer can issue a control instruction to the total station through the control terminal, thereby implementing remote control of the total station, and meanwhile, the measurement data on the total station can also be uploaded through the control box; through the design, the all-weather all-time online of the total station and the offline unattended operation and control of the total station can be realized, and in addition, because the manual field measurement is not needed, the working intensity of measuring personnel is reduced, and the measuring precision is improved.
Referring to fig. 1 to 12, the control system of the total station provided in this embodiment may include, but is not limited to: the total station control box is in communication connection with the control terminal through the server and used for receiving a control instruction issued by the control terminal, and meanwhile, the total station control box is also electrically connected with the total station and used for transmitting the control instruction to the total station so that the total station performs corresponding actions according to the control instruction, and therefore, the total station can realize the two-way communication between the total station and the control terminal and the server, the automatic control of the total station and the uploading of measurement data are completed, and the all-weather online and unattended control of the total station is further realized.
Optionally, in a specific application, the control terminal may include, but is not limited to, a mobile phone, a tablet and/or a computer, and the server may include, but is not limited to: the mapping software cloud server and/or the private cloud may be specifically configured according to actual use, and are not limited herein.
Referring to fig. 2, the following provides a specific composition structure of a total station control box:
in a specific application, for example, the total station control box may be but not limited to include a main control unit, a 4G communication unit and an RS232 serial communication unit, where the main control unit is electrically connected to the 4G communication unit and the RS232 serial communication unit respectively, the 4G communication unit is communicatively connected to the server and is configured to receive the control instruction, the RS232 serial communication unit is electrically connected to the total station and is configured to transmit the control instruction to the total station and/or receive measurement data transmitted by the total station, and the 4G communication unit is further configured to transmit the measurement data to the server; therefore, communication connection with the server can be established by the 4G communication unit, serial communication with the total station is achieved by the RS232 serial communication unit, and therefore issuing of instructions and uploading of measurement data are completed.
Referring to fig. 3-9, specific structures of the various units in the total station control box are provided as follows.
Firstly, in specific application, for example, the main control unit may be, but is not limited to, an STM32F103RCT6 type processing chip and a peripheral circuit thereof, and specific circuit diagrams are shown in fig. 3 and fig. 4, and meanwhile, the embodiment further provides a power supply circuit for the main control unit, that is, a plurality of capacitors are connected in parallel to a power supply terminal of the STM32F103RCT6 type processing chip, so as to implement a filtering function for the main control power supply; of course, the peripheral circuits of the master control unit may include, but are not limited to: a crystal oscillator, a reset circuit, a clock circuit, a rom circuit, etc., which are necessary peripheral circuits of the main control unit, and are not described herein.
Secondly, in this embodiment, for example, the 4G communication unit may include, but is not limited to: the EC20 CEHCLG-MINIPIE-CB type 4G communication chip is characterized in that the main control unit is in wireless communication connection with the server through the EC20 CEHCLG-MINIPIE-CB type 4G communication chip; in specific use, the 4G communication chip is equipped with a SIM (Subscriber Identity Module), that is, when the STM32F103RCT6 type processing chip detects that the SIM card is inserted, the cellular data can be started to connect to the specified server address, so as to establish communication connection with the server.
Of course, in this embodiment, the EC20CEHCLG-MINIPCIE-CB type 4G communication core is provided with peripheral circuits, such as a reset circuit and the like, and specifically, see fig. 6.
Meanwhile, since the voltages at the i (input)/o (output) ports of the STM32F103RCT6 type processing chip and the EC20 CEHCLG-minicce-CB type 4G communication chip are different, this embodiment is further provided with two level conversion circuits to realize level conversion between the two ports, as shown in fig. 7 and 5, the receiving end of the EC20 CEHCLG-minicce-CB type 4G communication chip is electrically connected to the sending end of the main control unit through the first level conversion circuit, and the sending end of the EC20 CEHCLG-minicce-CB type 4G communication chip is electrically connected to the receiving end of the main control unit through the second level conversion circuit; therefore, the first level conversion circuit and the second level conversion circuit can be used for carrying out level conversion between the 4G communication chip and the port of the main control unit, and normal data communication between the first level conversion circuit and the port of the main control unit is guaranteed.
In a specific application, for example, the first level shift circuit may include, but is not limited to: the circuit comprises a first triode Q4, a first resistor R14, a second resistor R15 and a first capacitor C40, wherein the connection structure of the electronic devices is as follows:
referring to fig. 7, an emitter of the first transistor Q4 is electrically connected to a transmitting terminal of the main control unit, a collector of the first transistor Q4 is electrically connected to a receiving terminal of the EC20CEHCLG-MINIPCIE-CB type 4G communication chip, a base of the first transistor Q4 is electrically connected to a common terminal of the first capacitor C40 and the first resistor R14, another common terminal of the first capacitor C40 and the first resistor R14 is electrically connected to a first power terminal of the EC20CEHCLG-MINIPCIE-CB type 4G communication chip (i.e., the 11 th pin of the 4G communication chip in fig. 5), and the second resistor R15 is further connected in parallel between the power terminal and the receiving terminal of the EC20CEHCLG-MINIPCIE-CB type 4G communication chip; therefore, the level conversion between the two ports can be realized through the on-off of the first triode Q4.
As described with reference to fig. 7, the second level shift circuit may include, but is not limited to: a second triode Q5, a third resistor R17, a fourth resistor R16 and a second capacitor C45, wherein an emitter of the second triode Q5 is electrically connected to a transmitting terminal of the EC20CEHCLG-MINIPCIE-CB type 4G communication chip, a collector of the second triode Q5 is electrically connected to a receiving terminal of the master control unit, a base of the second triode Q5 is electrically connected to a common terminal of the third resistor R17 and the second capacitor C45, respectively, another common terminal of the third resistor R17 and the second capacitor C45 is electrically connected to a first power supply terminal of the EC20CEHCLG-MINIPCIE-CB type 4G communication chip, and a collector of the second triode Q5 is electrically connected to a 3.3V dc power supply through the fourth resistor R16; in this embodiment, the level conversion principle of the second level conversion circuit is the same as that of the first level conversion circuit, and thus, the description thereof is omitted.
In addition, this embodiment further provides an independent power supply circuit and a filter circuit for the 4G communication unit, as shown in fig. 8, when the method is applied specifically, the communication power supply circuit uses a MIC29302WU-TR type low dropout regulator chip, wherein an input end of the MIC29302WU-TR type low dropout regulator chip is electrically connected to a 5V dc power supply, an output end of the MIC29302WU-TR type low dropout regulator chip is connected to a 3.8V dc voltage, and the filter circuit is electrically connected to a second power supply end of the EC20 CEHCLG-minicce-CB type 4G communication chip, that is, to a 2 nd pin of the EC20 CEHCLG-minicce-CB type 4G communication chip; therefore, the 5V power supply can be converted into the working voltage of the 4G communication chip, so that the normal work of the 4G communication chip is ensured, meanwhile, the filter circuit can reduce alternating current components in pulsating direct current voltage in the power supply as much as possible, keep direct current components of the alternating current components, reduce the ripple factor of output voltage, and ensure that the waveform becomes smoother so as to ensure stable power supply to the communication chip.
Alternatively, referring to fig. 8, an exemplary filter circuit may include, but is not limited to, a resistor R11, a resistor R12, a resistor R19, and 12 capacitors (i.e., capacitors C28-C39) connected in parallel with each other, where a resistor R11 is connected in parallel between the 4 th pin and the 5 th pin of the MIC29302WU-TR type low dropout regulator chip, the 4 th pin of the MIC29302WU-TR type low dropout regulator chip is further electrically connected to a common terminal of the 12 capacitors, another common terminal of the 12 capacitors is grounded, and the resistor R11 is grounded through a resistor R12; therefore, the filtering function can be realized by utilizing the capacitor and the resistor.
Finally, in this embodiment, for example, the RS232 serial port communication unit adopts a MAX3232EEAE type transceiver chip and its peripheral circuits, see fig. 9.
Therefore, through the specific circuit explanation of the total station control box, the total station control box can realize the two-way communication between the total station and the control terminal and between the total station and the server, so that the automatic control and the uploading of the measured data of the total station are completed, and the all-weather online and unattended control of the total station is further realized.
Referring to fig. 10 to 12, the following provides a richer peripheral circuit for the control box in the first aspect of the foregoing embodiment, and the specific setting circuit is as follows:
in a specific application, a power supply unit is provided for the control box so as to supply power to the units, as shown in fig. 10 and 11, in the specific application, the power supply unit may include, but is not limited to, an AC-DC conversion circuit, a first voltage reduction circuit, and a second voltage reduction circuit, wherein an input end of the AC-DC conversion circuit is electrically connected to an AC power supply (which may be, but is not limited to, a commercial power, that is, 220V AC), an output end of the AC-DC conversion circuit is electrically connected to an input end of the first voltage reduction circuit, an output end of the first voltage reduction circuit outputs 5V DC voltage, and supplies power to the 4G communication unit, that is, electrically connected to a power supply end of the MIC29302WU-TR type low-dropout regulator chip; meanwhile, the output end of the first voltage reduction circuit is electrically connected with the input end of the second voltage reduction circuit, the output end of the second voltage reduction circuit outputs 3.3V direct-current voltage, the main control unit and the RS232 serial port communication unit supply power, and therefore through the design, the power supply requirements of all circuit units in the control box can be met, and normal power supply of the whole control box is guaranteed.
In this embodiment, for example, the AC-DC conversion circuit adopts an IRM-60-12 type AC-DC conversion chip and a peripheral circuit thereof, the first voltage-reducing circuit adopts an LM2596SX-5.0/NOPB type voltage-reducing chip and a peripheral circuit thereof, the second voltage-reducing circuit adopts an AMS1117-33 type low-voltage-reducing voltage-stabilizing chip and a peripheral circuit thereof, and specific circuit diagrams of the three circuits can be shown in fig. 10 and 11, which are not described herein.
In addition, in this embodiment, the total station control box is further provided with a panel indicator light electrically connected with the main control unit, so that the panel indicator light can be used for indicating the state of the control box, thereby facilitating a measurer to grasp the operation state of the control box in real time and maintain the control box in time when a fault occurs; for specific applications, the specific connection structure between the panel indicator light and the main control unit can be seen in fig. 12 and 4, which is not described herein.
Through the foregoing detailed description of the control system of the total station, the present invention has the following beneficial effects:
(1) the invention can realize the all-weather all-time on-line of the total station and the off-line unattended operation and control of the total station, and in addition, because the manual on-site measurement is not needed, the working intensity of measuring personnel is reduced, and the measuring precision is also improved.
(2) The invention can utilize the total station control box to realize the wireless uploading of the measured data in the total station, therefore, when the data is transmitted, the wiring is not needed, the problems of distance and use environment limitation caused by the traditional total station wiring transmission can be effectively solved, the use convenience is improved, the measurement cost and the work intensity of workers are also reduced, and the invention is suitable for large-scale application and popularization.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A control system for a total station, comprising: the total station comprises a total station control box, a server and a control terminal;
the total station control box is in communication connection with the control terminal through the server and is used for receiving a control instruction sent by the control terminal;
the total station control box is also electrically connected with a total station and used for transmitting the control instruction to the total station so that the total station acts according to the control instruction;
the total station control box comprises a main control unit, a 4G communication unit and an RS232 serial port communication unit, wherein the main control unit is electrically connected with the 4G communication unit and the RS232 serial port communication unit respectively;
the 4G communication unit is in communication connection with the server and is used for receiving the control instruction;
the RS232 serial port communication unit is electrically connected to the total station, and is configured to transmit the control instruction to the total station and/or receive measurement data transmitted by the total station, and the 4G communication unit is further configured to transmit the measurement data to the server.
2. The control system of a total station of claim 1, wherein said 4G communication unit comprises: the device comprises an EC20 CEHCLG-MINIPIE-CB type 4G communication chip, a first level conversion circuit and a second level conversion circuit;
the receiving end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip is electrically connected with the sending end of the main control unit through a first level conversion circuit, and the sending end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip is electrically connected with the receiving end of the main control unit through a second level conversion circuit so as to carry out level conversion between ports through the first level conversion circuit and the second level conversion circuit.
3. The control system of a total station as claimed in claim 2, wherein said first level shifting circuit comprises: the circuit comprises a first triode (Q4), a first resistor (R14), a second resistor (R15) and a first capacitor (C40);
an emitter of the first triode (Q4) is electrically connected with a transmitting end of the main control unit, a collector of the first triode (Q4) is electrically connected with a receiving end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip, and a base of the first triode (Q4) is electrically connected with a common connecting end of the first capacitor (C40) and the first resistor (R14);
the first capacitor (C40) and the other common connection end of the first resistor (R14) are electrically connected with the first power supply end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip, and the second resistor (R15) is connected in parallel between the power supply end and the receiving end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip.
4. The control system of a total station as claimed in claim 2, wherein said second level shifting circuit comprises: a second triode (Q5), a third resistor (R17), a fourth resistor (R16) and a second capacitor (C45);
an emitter of the second triode (Q5) is electrically connected with a transmitting end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip, a collector of the second triode (Q5) is electrically connected with a receiving end of the main control unit, and a base of the second triode (Q5) is electrically connected with a common connecting end of the third resistor (R17) and the second capacitor (C45) respectively;
the other common connection end of the third resistor (R17) and the second capacitor (C45) is electrically connected with the first power supply end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip, and the collector electrode of the second triode (Q5) is electrically connected with a 3.3V direct current power supply through the fourth resistor (R16).
5. The control system of a total station of claim 2, in which said 4G communication unit further comprises: a communication power supply circuit and a filter circuit;
the communication power supply circuit adopts an MIC29302WU-TR type low-dropout voltage stabilizing chip;
the input end of the MIC29302WU-TR type low-dropout regulator chip is electrically connected with a 5V direct-current power supply, the output end of the MIC29302WU-TR type low-dropout regulator chip is connected with 3.8V direct-current voltage, and the second power supply end of the EC20 CEHCLG-MINIPIE-CB type 4G communication chip is electrically connected through the filter circuit.
6. The control system of a total station according to claim 1, wherein said total station control box further comprises: a power supply unit, wherein the power supply unit includes an AC-DC conversion circuit, a first step-down circuit, and a second step-down circuit;
the input end of the AC-DC conversion circuit is electrically connected with an alternating current power supply, the output end of the AC-DC conversion circuit is electrically connected with the input end of the first voltage reduction circuit, and the output end of the first voltage reduction circuit outputs 5V direct current voltage to supply power for the 4G communication unit;
the output end of the first voltage reduction circuit is also electrically connected with the input end of the second voltage reduction circuit, and the output end of the second voltage reduction circuit outputs 3.3V direct-current voltage to supply power for the main control unit and the RS232 serial port communication unit.
7. The control system of a total station as claimed in claim 6, wherein said AC-DC conversion circuit employs IRM-60-12 type AC-DC conversion chip and its peripheral circuits, said first voltage-reducing circuit employs LM2596SX-5.0/NOPB type voltage-reducing chip and its peripheral circuits, and said second voltage-reducing circuit employs AMS1117-33 type low voltage-reducing voltage-stabilizing chip and its peripheral circuits.
8. The control system of a total station according to claim 1, wherein said total station control box is further provided with a panel indicator light electrically connected to said master control unit.
9. The control system of a total station as claimed in claim 1, wherein said RS232 serial port communication unit employs a MAX3232EEAE type transceiver chip and its peripheral circuits.
10. The control system of a total station as claimed in claim 1, wherein said master control unit employs STM32F103RCT6 type processing chips and their peripheral circuits.
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| CN202111652328.8A CN114384840A (en) | 2021-12-30 | 2021-12-30 | Control system of total station |
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