A control device for total station protective cover

Abstract

The invention discloses a control device for a total station protective cover. The control device can receive a control instruction issued by a server, and realize automatic control of a protective cover driving motor based on the control instruction, so as to complete the rising, falling and stopping of the protective cover. Therefore, the use of the control device realizes automatic control of the protective cover on the total station, which not only saves time and labor, but also improves measurement efficiency, and is suitable for large-scale application and promotion.

Description

Technical Field

[0001] The invention belongs to the technical field of total station automatic control, and in particular relates to a control device for a total station protective cover. Background Art

[0002] With the continuous strengthening of my country's infrastructure construction, a large number of large-scale projects such as dams, slopes, tunnels, bridges and super high-rise buildings have emerged across the country. In engineering construction, construction measurement is indispensable. At present, the measurement in this field in my country is mainly achieved by surveyors using decentralized measurement technology, that is, using a single total station and other surveying and mapping instruments to carry out measurement, and construction measurement is achieved by surveyors controlling the opening and closing of the measuring equipment on site.

[0003] A total station, or total station electronic distance meter, is a high-tech measuring instrument that integrates an electronic theodolite, a photoelectric distance meter and a microprocessor. It is also a surveying and mapping instrument system that integrates horizontal angle, vertical angle, distance (slant distance and horizontal distance) and height difference measurement functions. It can replace artificial optical micrometer readings with automatic recording and display of readings, simplifying the angle measurement operation and avoiding the occurrence of reading errors. Because it can complete all measurement work at the survey station by setting up the instrument once, it is widely used in precision engineering measurement or deformation monitoring fields such as large-scale building and underground tunnel construction.

[0004] At present, most total stations are equipped with a lifting cylinder, which serves as a protective cover for the total station. When the total station is not in use, it protects the total station. However, the existing lifting cylinders are mostly opened and closed manually, which requires workers to go to the site to manually open or close it during and after measurement. This is not only time-consuming and labor-intensive, but also reduces the measurement efficiency. Therefore, it is urgent to provide an automatic control device for the protective cover of the total station. Summary of the invention

[0005] The purpose of the present invention is to provide a control device for a total station protective cover, so as to solve the problems of time-consuming and labor-intensive manual opening and closing of the existing total station protective cover and low measurement efficiency.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a control device for a total station protective cover, comprising: a protective cover control module, a communication module and a main control module, wherein the protective cover control module comprises a protective cover opening drive circuit and a protective cover closing drive circuit;

[0008] The main control module is communicatively connected to the server via the communication module;

[0009] The protection cover opening drive circuit and the protection cover closing drive circuit respectively include a first relay and a first transistor, wherein the base of the first transistor is electrically connected to the first output end of the main control module through a first resistor;

[0010] The collector of the first transistor is electrically connected to one end of the first relay coil, and the other end of the first relay coil is electrically connected to a power supply;

[0011] The normally open contact of the first relay is electrically connected to the motor power supply, the middle contact of the first relay is electrically connected to the control interface of the protective cover driving motor, and the normally closed contact of the first relay and the emitter of the first transistor are grounded respectively.

[0012] Based on the above disclosed content, the present invention pre-configures a driving motor for the protective cover for electric drive, and at the same time, it is equipped with a communication module and a protective cover control module, thereby, the communication module can be used to establish a communication connection with the server, so as to use the server to issue a protective cover control instruction (such as an opening or closing instruction), and the main control module can output a control signal to the protective cover control module after receiving the instruction, so as to use the two first transistors in the protective cover control module to drive the opening and closing of the first relay, thereby realizing automatic control of the driving motor, so as to complete the automatic opening and closing of the protective cover; through the above design, the present invention does not need to use manual opening and closing of the protective cover on the total station, which not only saves time and effort, but also improves the measurement efficiency.

[0013] In one possible design, the protective cover control module further includes: a protective cover position detection circuit, wherein the protective cover position detection circuit includes three photoelectric couplers;

[0014] A second resistor is connected in parallel between two pins of the light source in each photoelectric coupler, wherein one pin of the light source in each photoelectric coupler is electrically connected to the output end of the protective cover position detection sensor, the other pin of the light source in each photoelectric coupler is electrically connected to the motor power supply through a third resistor, and the second resistor is grounded through a first bidirectional breakdown diode;

[0015] The output end of the light receiver in each photoelectric coupler is electrically connected to the first input end of the main control module, so as to transmit the position signal of the protective cover to the main control module.

[0016] Based on the above disclosed content, through three photoelectric couplers and the protective cover position detection sensor, real-time detection of the position of the protective cover can be achieved, such as whether it has risen into place or fallen into place, etc. Therefore, through the above design, it can help the staff to understand the working status of the protective cover and improve the convenience of use.

[0017] In a possible design, the protective cover control module further includes: a temperature detection circuit, wherein the temperature detection circuit includes a fourth resistor, a fifth resistor and a first capacitor;

[0018] One end of the fourth resistor is electrically connected to the output end of the temperature sensor and one end of the fifth resistor, wherein the temperature sensor is installed in the protective cover;

[0019] The other end of the fifth resistor and one end of the first capacitor are electrically connected to a 3.3V DC power supply respectively, wherein the other end of the first capacitor is grounded, and the other end of the fourth resistor is electrically connected to the second input end of the main control module.

[0020] Based on the above disclosed content, by setting up a temperature detection circuit, it is convenient for the staff to grasp the working temperature of the equipment in real time, thereby preventing overheating in the protective cover and affecting the normal operation of the drive motor.

[0021] In one possible design, the protective cover control module also includes: a protective cover fan drive circuit, wherein the input end of the protective cover fan drive circuit is electrically connected to the second output end of the main control module, and the output end of the protective cover fan drive circuit is electrically connected to the control interface of the protective cover fan.

[0022] Based on the above disclosed content, by setting up a protective cover fan drive circuit, the drive motor and various electronic devices in the protective cover can be cooled, thereby preventing the equipment from overheating and being damaged, thereby improving the stability of the device.

[0023] In a possible design, the control device further includes: a key detection module, wherein the key detection module includes six detection circuits;

[0024] Each of the six detection circuits includes a sixth resistor, a seventh resistor and a first diode, wherein one end of the sixth resistor is electrically connected to the button interface on the protective cover, the other end of the sixth resistor is electrically connected to the third input end of the main control module, and the other end of the sixth resistor is electrically connected to a 3.3V DC power supply through the first diode, and is electrically connected to a 3.3V DC power supply through the seventh resistor.

[0025] Based on the above disclosed content, when the device is being repaired, the buttons on the protective cover can be used to manually lock, unlock, open or close the protective cover to determine whether the protective cover is working properly, thereby improving the convenience of maintenance.

[0026] In a possible design, the control device further includes: a power supply module, wherein the power supply module includes an AC-DC conversion circuit, a first filter circuit, a second filter circuit, and a step-down circuit;

[0027] The input end of the AC-DC conversion circuit is electrically connected to an AC power supply, the output end of the AC-DC conversion circuit is electrically connected to the input end of the step-down circuit through the first filter circuit, and the output end of the step-down circuit is electrically connected to the power supply end of the communication module and the main control module respectively;

[0028] An input end of the second filter circuit is electrically connected to a DC power supply, and an output end of the second filter circuit is electrically connected to a power supply end of the protective cover control module.

[0029] Based on the above disclosed content, the drive motor in the present invention adopts an independent power supply, which can prevent the start and stop of the motor from interfering with the various devices in the control device, thereby further improving the stability of the device operation; at the same time, two filtering circuits are set to filter the two power supplies, thereby minimizing the AC component in the pulsating DC voltage as much as possible, retaining its DC component, reducing the ripple factor of the output voltage, and making the waveform smoother, thereby ensuring stable power supply to each module.

[0030] In a possible design, the power supply module further includes: a battery power supply circuit, wherein the battery power supply circuit includes a second bidirectional breakdown diode, an eighth resistor, a first Schottky diode, and a second Schottky diode;

[0031] The positive electrode of the first Schottky diode and the positive electrode of the second Schottky diode are electrically connected to the battery respectively, the negative electrode of the first Schottky diode is electrically connected to the input end of the buck circuit, and the negative electrode of the second Schottky diode is electrically connected to the protection cover control module and the power supply end of the protection cover drive motor;

[0032] The anode of the first Schottky diode is also electrically connected to the anode of the second bidirectional breakdown diode and one end of the eighth resistor, respectively. The cathode of the second bidirectional breakdown diode and the other end of the eighth resistor are grounded, respectively.

[0033] Based on the above disclosed content, the present invention is also provided with a battery power supply, thereby forming a power supply mechanism with one in use and one in reserve, thereby ensuring uninterrupted power supply to the control device. At the same time, the second bidirectional breakdown diode in the circuit can also suppress instantaneous overvoltage, that is, when a surge pulse voltage appears in the circuit instantaneously, the bidirectional breakdown diode can quickly break down by Zener, changing from a high-resistance state to a low-resistance state, shunting and clamping the surge voltage, thereby protecting the various components in the circuit from being damaged by the instantaneous surge pulse voltage, thereby improving the reliability of the device.

[0034] In one possible design, the power supply module further includes a battery voltage detection circuit, a motor voltage detection circuit, and a main power supply voltage detection circuit;

[0035] The detection end of the battery voltage detection circuit is electrically connected to the battery, the detection end of the motor voltage detection circuit is electrically connected to the DC power supply, the detection end of the main power supply voltage detection circuit is electrically connected to the output end of the AC-DC conversion circuit, and the output ends of the battery voltage detection circuit, the motor voltage detection circuit and the main power supply voltage detection circuit are respectively electrically connected to the fourth input end of the main control module.

[0036] Based on the above disclosed content, by setting the aforementioned voltage detection circuits, the voltage of each power supply can be detected in real time, so that when the battery voltage is too low, the motor voltage is too low and / or the main power supply voltage is too low, the communication module can be used to transmit the voltage data to the server, thereby notifying the staff to perform timely maintenance.

[0037] In a possible design, the control device also includes: a data receiving module, wherein the input end of the data receiving module is electrically connected to the total station, and the output end of the data receiving module is electrically connected to the fifth input end of the main control module for receiving measurement data of the total station.

[0038] Based on the above disclosed content, the present invention uses a data receiving module to receive the measurement data of the total station and uploads it to the server through a communication module. Thus, real-time uploading of the measurement data in the total station can be realized without the need to lay transmission cables. This not only reduces the measurement cost and the workload of workers, but also effectively solves the problems of distance and use environment limitations caused by wiring, thereby increasing the convenience of using the total station.

[0039] In a possible design, the control device further includes: a work indication module, wherein the work indication module includes a signal strength indication circuit, a key control circuit, and a device status indication circuit;

[0040] The signal strength indication circuit comprises a plurality of first light emitting diodes for indicating the signal strength of the communication module;

[0041] The device status indication circuit includes a plurality of second light emitting diodes for indicating the working status of the control device;

[0042] The button control circuit includes a reset button, wherein the reset button is used to restore the control device to factory settings when pressed.

[0043] Based on the above disclosed content, by setting up a work indication module, real-time indication of the working status of the device can be achieved, which helps the staff to timely understand the operating status of the device and perform timely repairs when a fault occurs; thereby further improving the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a system block diagram of the control device of the total station protective cover provided by the present invention;

[0045] Figure 2 It is a schematic diagram of the connection architecture between the control device and the server of the total station protective cover provided by the present invention;

[0046] Figure 3 is a specific circuit diagram of the protective cover control module provided by the present invention;

[0047] Figure 4 It is a specific circuit diagram of the IO pins of the main control module provided by the present invention;

[0048] Figure 5 It is a connection circuit diagram of the IO pins of the main control module provided by the present invention;

[0049] Figure 6 It is a power supply circuit diagram of the main control module provided by the present invention;

[0050] Figure 7 is a specific circuit diagram of the communication chip provided by the present invention;

[0051] Figure 8 is a specific circuit diagram of the level conversion circuit provided by the present invention;

[0052] Fig. 9 is a specific circuit diagram of the protective cover position detection circuit provided by the present invention;

[0053] Fig.10 is a specific circuit diagram of the temperature detection circuit provided by the present invention;

[0054] Fig.11 is a specific circuit diagram of the key detection module provided by the present invention;

[0055] Fig.12 is a specific circuit diagram of the first filtering circuit provided by the present invention;

[0056] Fig.13 is a specific circuit diagram of the second filtering circuit provided by the present invention;

[0057] Fig.14 is a specific circuit diagram of the step-down circuit provided by the present invention;

[0058] Fig.15 is a specific circuit diagram of the battery power supply circuit provided by the present invention;

[0059] Fig.16 is a specific circuit diagram of the battery voltage detection circuit provided by the present invention;

[0060] Fig.17 is a specific circuit diagram of the motor voltage detection circuit provided by the present invention;

[0061] Fig.18 is a specific circuit diagram of the main power supply voltage detection circuit provided by the present invention;

[0062] Fig.19 is a specific circuit diagram of the data receiving module provided by the present invention;

[0063] Fig. 20 is a specific circuit diagram of the signal strength indication circuit provided by the present invention;

[0064] Fig.21 is a specific circuit diagram of the device status indication circuit provided by the present invention;

[0065] Fig. 22 It is a specific circuit diagram of the key control circuit provided by the present invention. DETAILED DESCRIPTION

[0066] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that although the description of these embodiments is used to help understand the present invention, it does not constitute a limitation of the present invention. The specific structures and functional details disclosed herein are only used to describe the exemplary embodiments of the present invention. However, the present invention can be embodied in many alternative forms, and it should not be understood that the present invention is limited to the embodiments set forth herein.

[0067] Example

[0068] like Figure 1 and Figure 2 As shown, the control device of the total station protective cover provided in this embodiment can be used for but is not limited to the remote control of the lifting cylinder (protective cover) on each total station. The control device can receive the control instructions issued by the server, and realize the automatic control of the protective cover drive motor based on the control instructions, so as to complete the rising, falling and stopping of the protective cover. Therefore, the use of the control device realizes the automatic control of the protective cover on the total station, which not only saves time and effort, but also improves the measurement efficiency, and is suitable for large-scale application and promotion.

[0069] See also Figures 1 to 10 As shown, the control device of the total station protective cover provided in this embodiment may include, but is not limited to: a protective cover control module, a communication module and a main control module. In specific applications, see Figure 2 As shown, the main control module is connected to the server through the communication module, and the server is connected to each client. Therefore, the main control module can use the communication module to receive control instructions sent by each client, so as to realize automatic control of the protective cover based on the control instructions.

[0070] At the same time, in this embodiment, the protective cover of the total station is equipped with a driving motor, that is, the driving motor is used to drive the protective cover to open or close. Therefore, in this embodiment, the remote control of the protective cover can be completed by only controlling the driving motor to work.

[0071] Optionally, in a specific application, the protective cover control module includes a protective cover opening drive circuit and a protective cover closing drive circuit to realize the opening and closing of the protective cover, see Figure 3 As shown, in a specific implementation, the protection cover opening drive circuit and the protection cover closing drive circuit may include, but are not limited to, a first relay ( Figure 3 K2 and K3 in) and the first transistor ( Figure 3 Q8 and Q9 in the figure), wherein the base of the first transistor is connected through a first resistor ( Figure 3 R77 and R83 in the circuit) are electrically connected to the first output terminal of the main control module, and the collector of the first transistor is electrically connected to one end of the first relay coil (i.e. Figure 3 The 5th pin of the first relay in the first relay), the first relay coil ( Figure 3 The other end of the 4th pin of the first relay in the circuit is electrically connected to the power supply, and the normally open contact of the first relay ( Figure 3 The third pin of the first relay in the middle is electrically connected to the motor power supply, and the middle contact of the first relay ( Figure 3 The first pin of the first relay in the protective cover is electrically connected to the control interface of the protective cover driving motor, and the normally closed contact of the first relay ( Figure 3 The second pin of the first relay and the emitter of the first transistor are grounded respectively.

[0072] Therefore, through the above-mentioned detailed circuit description of the two driving circuits, after receiving the control instruction, the main control module can output high and low level signals to the first transistor, thereby turning on or off the first transistor, and then energizing or de-energizing the first relay, thereby controlling the drive motor to rotate forward or reverse, thereby realizing the control of opening or closing the protective cover.

[0073] Of course, in this embodiment, protection components can be set in the above two driving circuits to play a circuit protection role, see Figure 3 As shown, a resistor (i.e. Figure 3 The resistors R80 and R84 in the first relay coil are used to protect the first transistor, thereby ensuring that the first transistor is reliably cut off when the input voltage is low. At the same time, a diode ( Figure 3 The diodes D43 and D44 in the circuit are used to protect the relay, thereby preventing damage to the relay and avoiding breakdown of components connected to the relay.

[0074] At the same time, in specific implementation, the control device can be integrated into a control box and installed in conjunction with a total station, thereby achieving automatic control of the total station protective cover while improving the convenience of installation.

[0075] See also Figures 4 to 8 As shown, the following provides a specific circuit structure of the main control module and the communication module in the aforementioned control device.

[0076] First, in specific applications, the main control module can be, but is not limited to, the STM32F745VET6 control chip and its peripheral circuits. For specific circuit diagrams, see Figure 4 , Figure 5 and Figure 6 As shown; Of course, the peripheral circuits of the main control module may include but are not limited to: crystal oscillator, reset, clock and read-only memory circuits, etc., which are necessary peripheral circuits of the main control module and are not described in detail here. The specific connection circuit diagram of the main control module and the above two drive circuits can be found in Figure 5 , Figure 4 and Figure 3 shown.

[0077] Secondly, in the specific implementation, the 4G communication module adopts the EC2x_EG2x-G 4G communication chip and its peripheral circuit. The specific circuit diagram can be found in Figure 7 As shown, of course, the peripheral circuit of the 4G communication chip may include but is not limited to a power supply circuit and a level conversion circuit, wherein the input end of the power supply circuit is electrically connected to a 5V DC power supply, and the output end of the power supply unit outputs a 3.8V DC voltage, which are respectively electrically connected to the first power supply end of the 4G communication chip and the input end of the level conversion unit, while the output end of the level conversion unit outputs a 1.8V DC voltage, which is electrically connected to the second power supply end of the 4G communication chip.

[0078] Finally, see Figure 7 and Figure 8 As shown, in specific applications, the power supply circuit of the aforementioned 4G communication chip can be, but is not limited to, the MIC29302WU-TR low voltage difference regulator chip and its peripheral circuits, and the level conversion circuit can be, but is not limited to, the TXB0108PWR level conversion chip.

[0079] Therefore, through the above detailed explanation of the control device, the present invention can receive the control instructions issued by the server, and realize automatic control of the protective cover drive motor based on the control instructions, so as to complete the rising, falling and stopping of the protective cover. Therefore, the present invention realizes the automatic control of the protective cover on the total station, which not only saves time and effort, but also improves the measurement efficiency.

[0080] See also Figure 3 , Fig. 9 and Fig.10As shown, the second aspect of this embodiment provides a more abundant peripheral circuit for the protection cover control module on the basis of the first aspect of the embodiment, so as to further improve the control function of the protection cover, and the specific settings are as follows:

[0081] First, the present embodiment is also provided with a protective cover position detection circuit to detect the position of the protective cover in real time, thereby sending the position information to the server, and then to each client through the server, so that the staff can know the operating status of the protective cover.

[0082] In specific applications, for example, the protective cover position detection circuit may include, but is not limited to, three photoelectric couplers, and a protective cover position detection sensor is installed on the total station, such as an infrared sensor or an ultrasonic sensor to achieve position detection; see Fig. 9 As shown, a second resistor ( Fig. 9 R49, R50 and R65 in each photocoupler), one pin of the light source in each photocoupler is electrically connected to the output end of the protective cover position detection sensor (i.e. Fig. 9 The other pin of the light source in each photocoupler is connected to P13 in the circuit, and the other pin of the light source in each photocoupler is connected to the third resistor (i.e. Fig. 9 R78, R81 and R85 in the motor are electrically connected to the motor power supply, and the second resistor is connected to the motor power supply through a first bidirectional breakdown diode ( Fig. 9 D50-D52 in the photocoupler are grounded, and the output end of the light receiver in each photocoupler is electrically connected to the first input end of the main control module, so as to transmit the position signal of the protective cover to the main control module.

[0083] The working principle of the above-mentioned protective cover position detection circuit is: when the position sensor detects that the protective cover rises, falls or stops at a specified position, a corresponding electrical signal will be generated and transmitted to the photoelectric coupler, thereby lighting up the light source in the photoelectric coupler, thereby connecting the light receiver in the photoelectric coupler, thereby outputting an electrical signal to the main control module, and the output signal is a position signal; in this embodiment, three position detection points can be set by way of example, such as a rising specified position, a falling specified position and an intermediate stop position, thereby realizing three position detections of the protective cover; at the same time, the position status can also be sent to the server through the communication module, so as to be visualized on each client for real-time viewing by the staff.

[0084] Therefore, through the above-mentioned design, the present invention can realize real-time detection of the position of the protective cover, such as whether it is raised or lowered into place, etc., which can help the staff to understand the working status of the protective cover and improve the convenience of use.

[0085] Secondly, this embodiment is also provided with a temperature detection circuit to detect the temperature inside the protective cover in real time, thereby preventing the temperature inside the protective cover from being too high and causing the equipment to burn. For specific applications, see Fig.10 As shown, the temperature detection circuit may include, but is not limited to, a fourth resistor, a fifth resistor, and a first capacitor, wherein the fourth resistor ( Fig.10 One end of R31 in the circuit is electrically connected to the temperature sensor ( Fig.10 U10 in the embodiment, of course, the temperature sensor is installed in the protective cover) and the output end of the fifth resistor ( Fig.10 one end of R29 in the figure, the other end of the fifth resistor and the first capacitor ( Fig.10 One end of C51 in is electrically connected to a 3.3V DC power supply, the other end of the first capacitor is grounded, and the other end of the fourth resistor is electrically connected to the second input end of the main control module; thereby, it is convenient for the staff to grasp the working temperature of the equipment in real time, so as to prevent overheating in the protective cover and affect the normal operation of the drive motor. Of course, an audible and visual alarm can also be set on the client side, so that when the temperature exceeds the set threshold, an audible and visual alarm is issued to prompt the staff to take corresponding emergency measures.

[0086] Finally, the present embodiment is also provided with a protective cover fan driving circuit to drive the fan in the protective cover for heat dissipation, which can cooperate with the aforementioned temperature detection circuit to turn on the fan for heat dissipation when the temperature reaches a threshold value; of course, heat dissipation can also be performed when the drive motor is working, and the specific driving conditions can be set according to actual use; see Figure 3 As shown, in specific applications, the protective cover fan driving circuit includes a second relay K4 and a second transistor Q10, and its specific connection structure and working principle are consistent with the aforementioned protective cover opening driving circuit, which will not be elaborated here; therefore, through the aforementioned design, the fan can be controlled to dissipate heat for the driving motor and various electronic devices in the protective cover, thereby preventing the equipment from overheating and being damaged, thereby improving the stability of the device.

[0087] See also Figures 11 to 22 As shown, the third aspect of this embodiment further optimizes the control device on the basis of the aforementioned first and second aspects to ensure power supply to the entire device and improve the convenience and functionality of the device.

[0088] First, a power supply module is provided for the control device. In a specific application, the power supply module may include, but is not limited to, an AC-DC conversion circuit, a first filter circuit, a second filter circuit, and a step-down circuit, wherein a 220V AC power supply is converted into a 220V DC power supply through an AC-DC conversion circuit ( Fig.12P9 in the figure serves as the output interface of the AC-DC conversion circuit), and then is filtered by the first filtering circuit and output to the step-down unit to be stepped down to the working voltage required by each module, and finally is output to the power supply end of each module, thereby completing the power supply of each module, that is, the input end of the AC-DC conversion circuit is electrically connected to the AC power supply, the output end of the AC-DC conversion circuit is electrically connected to the input end of the step-down circuit through the first filtering circuit, and the output end of the step-down circuit is electrically connected to the power supply ends of the communication module and the main control module, respectively, to power the aforementioned communication module and the main control module.

[0089] Optionally, the AC-DC conversion circuit may be, but not limited to, a ME8113AD7G AD-DC power conversion chip and its peripheral circuits, and the first filter circuit may be, but not limited to, a resistor R58, a diode D36, a bidirectional breakdown diode D37, and a plurality of capacitors connected in parallel ( Fig.12 C56-C60 in the circuit), the specific circuit can be found in Fig.12 As shown, the filter circuit composed of resistors and multiple capacitors can reduce the AC component in the pulsating DC voltage as much as possible, retain its DC component, reduce the ripple factor of the output voltage, and make the waveform smoother, thereby ensuring stable power supply to each module. At the same time, the bidirectional breakdown diode in the circuit can also suppress instantaneous overvoltage, that is, when a surge pulse voltage appears in the circuit instantaneously, the bidirectional breakdown diode can quickly break down, change from a high-resistance state to a low-resistance state, shunt and clamp the surge voltage, thereby protecting the components in the circuit from being damaged by the instantaneous surge pulse voltage, thereby improving the safety of the entire circuit operation.

[0090] In the specific implementation, the buck circuit may include, but is not limited to, an XL4015E1 switch buck DC-DC converter chip and an AMS1117-3.3 forward low voltage drop regulator chip, wherein the XL4015E1 switch buck DC-DC converter chip steps down the voltage output by the first filter circuit to 5V to power the power supply circuit in the communication module, while the AMS1117-3.3 forward low voltage drop regulator chip steps down the 5V DC voltage to 3.3V to power the aforementioned main control module. At the same time, the specific circuit diagram of the buck unit can be found in Fig.14 shown.

[0091] Optionally, in this embodiment, a DC power supply is also provided, which serves as an independent power supply to supply power to the drive motor, so as to prevent the start and stop of the motor from interfering with various devices in the control device; see Fig.13As shown, the input end of the second filter circuit is electrically connected to a DC power supply, and the output end of the second filter circuit is electrically connected to the power supply end of the protective cover control module; in this embodiment, the output voltage of the second filter circuit is the motor power supply, and the voltage output by the first filter circuit is the aforementioned power supply.

[0092] In this embodiment, the circuit structure of the second filter circuit is the same as that of the first filter circuit, and its principle is not repeated here. The specific circuit diagram can be found in Fig.13 shown.

[0093] At the same time, in order to ensure uninterrupted power supply for the control device in specific applications, this embodiment is also provided with a battery power supply circuit, see Fig.15 As shown, the battery power supply circuit includes a second bidirectional breakdown diode D35, an eighth resistor R57, a first Schottky diode D33 and a second Schottky diode D34, and the connection structure of the above-mentioned components is:

[0094] See also Fig.15 As shown, the positive electrode of the first Schottky diode D33 and the positive electrode of the second Schottky diode D3 are electrically connected to the battery respectively, the negative electrode of the first Schottky diode D33 is electrically connected to the input end of the step-down circuit (i.e., the 5th pin of the XL4015E1 switch step-down DC-DC conversion chip), the negative electrode of the second Schottky diode D34 is electrically connected to the protection cover control module (i.e., the normally open contact of the first relay) and the power supply end of the protection cover drive motor, the positive electrode of the first Schottky diode D33 is also electrically connected to the positive electrode of the second bidirectional breakdown diode D35 and one end of the eighth resistor R57 respectively, and the negative electrode of the second bidirectional breakdown diode D35 and the other end of the eighth resistor R57 are grounded respectively; thereby, a power supply mechanism of one use and one standby can be formed, so that when the AC power supply (i.e., the mains) is powered off, the battery can be used for power supply, thereby ensuring uninterrupted power supply of the entire control device. Of course, the role of the second bidirectional breakdown diode D35 in the circuit can be referred to the aforementioned battery power supply circuit, and no further details are given here.

[0095] Secondly, in specific applications, this embodiment is also provided with a battery voltage detection circuit, a motor voltage detection circuit and a main power supply voltage detection circuit, so as to perform real-time monitoring of the battery voltage, the motor voltage and the main power supply voltage of the device, that is, the detection end of the battery voltage detection circuit is electrically connected to the battery, the detection end of the motor voltage detection circuit is electrically connected to the DC power supply, the detection end of the main power supply voltage detection circuit is electrically connected to the output end of the AC-DC conversion circuit, and the output ends of the battery voltage detection circuit, the motor voltage detection circuit and the main power supply voltage detection circuit are respectively electrically connected to the fourth input end of the main control module; thereby, the detected voltage data can be transmitted to the server in real time, so that when the battery voltage is too low, the motor voltage is too low and / or the main power supply voltage is too low, the staff can be notified in time to perform maintenance, so as to improve the protection capability of the device.

[0096] In this embodiment, the circuit structures of the battery voltage detection circuit, the motor voltage detection circuit and the main power supply voltage detection circuit are the same. The following takes the battery voltage detection circuit as an example to explain the detailed circuit:

[0097] See also Fig.16 As shown, the example battery voltage detection circuit may include but is not limited to: a second diode D11, a third diode D8, a resistor R32, a resistor R33 and a capacitor C54, wherein the positive electrode of the diode D9 is used as a detection end of the battery voltage detection circuit and is electrically connected to the battery, the negative electrode of the second diode D11 is electrically connected to one end of the resistor R32, and the other end of the resistor R32 is electrically connected to one end of the capacitor C54, the positive electrode of the third diode D8 and one end of the resistor R33, respectively. At the same time, the negative electrode of the third diode D8 is electrically connected to the second output end of the step-down circuit (that is, electrically connected to a 3.3V DC voltage), the other ends of the capacitor C54 and the resistor R33 are grounded respectively, and the other end of the resistor R32 is also used as an output end of the battery voltage detection circuit and is electrically connected to the main control module; thus, the battery voltage can be sampled through the resistor R3, and the sampled voltage signal is transmitted to the main control module, and finally transmitted to the server through the communication module so that the staff can check it in time.

[0098] Similarly, the specific circuit principles of the motor voltage detection circuit and the main power supply voltage detection circuit are the same as those of the aforementioned battery voltage detection circuit, and will not be described in detail here. The specific circuit diagrams of the two can be found in Fig.17 and Fig.18 shown.

[0099] Finally, in the specific implementation, this embodiment is also provided with a key detection module, so that when the device is maintained, the key detection module can be used to realize manual detection of the drive motor, wherein the key detection module includes six detection circuits, see Fig.11As shown, each of the six detection circuits includes a sixth resistor ( Fig.11 R71, R73, R75, R89, R90 and R91), the seventh resistor ( Fig.11 R66, R68, R70, R72, R74 and R76) and the first diode ( Fig.11 D31, D32 and D46-D49 in it), wherein one end of the sixth resistor is electrically connected to the button interface on the protective cover (a detection button is provided on the protective cover for locking, unlocking and operating control of the drive motor), the other end of the sixth resistor is electrically connected to the third input terminal of the main control module, and the other end of the sixth resistor is electrically connected to the 3.3V DC power supply through the first diode, and is electrically connected to the 3.3V DC power supply through the seventh resistor; through the above-mentioned design, the present invention can use the buttons on the protective cover to manually operate the locking, unlocking, opening or closing of the protective cover when the device is under maintenance, so as to determine whether the protective cover is working normally, thereby improving the convenience of maintenance.

[0100] In addition, in specific applications, this embodiment is also provided with a plurality of functional circuits to improve the convenience of overall use of the device.

[0101] For example, a data receiving module is provided to receive the measurement data on the total station, and upload it to the server using the communication module, thereby completing the real-time uploading of the measurement data, that is, the input end of the data receiving module is electrically connected to the total station, and the output end of the data receiving module is electrically connected to the fifth input end of the main control module, for receiving the measurement data of the total station; thus, the total station does not need to arrange transmission cables when transmitting data, which not only reduces the measurement cost and the work intensity of the workers, but also effectively solves the problems of distance and use environment restrictions caused by wiring, and increases the convenience of using the total station.

[0102] Optionally, the data receiving module may be, but is not limited to, an RS485 / RS232 isolation transceiver. For a specific circuit diagram, see Fig.19 As shown, RSM3485ECHT chip and NC_RSM232 chip are used. Taking RSM3485ECHT chip as an example, its 8th and 9th pins are used as input terminals, electrically connected to the data transmission interface of the total station. Of course, protection components can be set between the two pins, such as Fig.19 The resistor R17, the resistor R18 and the bidirectional breakdown diodes D3-D5 in the RSM3485ECHT chip are connected to the first data transmission terminal of the STM32F429VGT6 processing chip as output terminals. The connection I / O (input / output) pins of the two can be seen in Fig.19 , Figure 4 and Figure 5 , I will not elaborate on this.

[0103] At the same time, this embodiment is also provided with a work indication module to indicate the work status.

[0104] Specifically, the working indication module includes a signal strength indication circuit, a key control circuit and a device status indication circuit, see Figure 20-22 As shown, the signal strength indication circuit includes a plurality of first light emitting diodes (i.e. Fig. 20 D12-D16) in the figure are used to indicate the signal strength of the communication module, wherein the multiple first light-emitting diodes are used to indicate the signal strength of the communication module, that is, the higher the strength, the more the number of lit first light-emitting diodes, and vice versa; thereby, it is convenient for staff to check the signal strength.

[0105] For specific applications, see Fig.21 As shown, the device status indication circuit includes a plurality of second light emitting diodes (i.e. Fig.21 D17-D30) are used to indicate the working status of the control device, specifically, it can be but not limited to indicating AC input indication, battery input indication, power supply output indication, fan operation indication, equipment fault indication, protective cover opening indication, protective cover closing indication, protective cover button locking indication, protective cover button unlocking indication, protective cover manual control indication, protective cover automatic control indication, etc. Its specific indication function can be specifically set according to actual use, and is not limited to the aforementioned indication function.

[0106] For specific applications, see Fig. 22 As shown, the button control circuit includes a reset button, wherein the reset button is used to restore the control device to factory settings when pressed. Of course, the function of the button can also be specifically set according to actual needs, such as forced reset, power on and off, etc.

[0107] Thus, through the above description, the present invention has the following beneficial effects:

[0108] (1) The present invention realizes automatic control of the protective cover on the total station, which not only saves time and labor, but also improves the measurement efficiency and is suitable for large-scale application and promotion.

[0109] (2) The present invention can realize real-time detection of the position of the protective cover, thereby helping the staff to understand the working status of the protective cover and improving the convenience of use.

[0110] (3) The present invention is provided with a temperature detection circuit, which can detect the temperature inside the protective cover in real time, so that the staff can grasp the working temperature of the equipment in real time, so as to prevent the protective cover from overheating and affecting the normal operation of the drive motor.

[0111] (4) The present invention is provided with a protective cover fan driving circuit, which can dissipate heat from the driving motor and various electronic devices in the protective cover, thereby preventing the equipment from being damaged by overheating, thereby improving the stability of the device.

[0112] (5) The drive motor in the present invention uses an independent power supply, which can prevent the start and stop of the motor from interfering with various devices in the control device.

[0113] (6) The present invention can realize real-time uploading of measurement data in the total station without the need to lay transmission cables, which not only reduces the measurement cost and the workload of workers, but also effectively solves the problems of distance and use environment limitations caused by wiring, thereby increasing the convenience of using the total station.

[0114] 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 protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A control device for a total station protective cover, characterized in that: include: A protection cover control module, a communication module and a main control module, wherein the protection cover control module includes a protection cover opening drive circuit and a protection cover closing drive circuit; The main control module is communicatively connected to the server via the communication module; The protection cover opening drive circuit and the protection cover closing drive circuit respectively include a first relay and a first transistor, wherein the base of the first transistor is electrically connected to the first output end of the main control module through a first resistor; The collector of the first transistor is electrically connected to one end of the first relay coil, and the other end of the first relay coil is electrically connected to a power supply; The normally open contact of the first relay is electrically connected to the motor power supply, the middle contact of the first relay is electrically connected to the control interface of the protective cover driving motor, and the normally closed contact of the first relay and the emitter of the first transistor are grounded respectively; The control device further includes: a power supply module, wherein the power supply module includes an AC-DC conversion circuit, a first filter circuit, a second filter circuit and a step-down circuit; The input end of the AC-DC conversion circuit is electrically connected to an AC power supply, the output end of the AC-DC conversion circuit is electrically connected to the input end of the step-down circuit through the first filter circuit, and the output end of the step-down circuit is electrically connected to the power supply end of the communication module and the main control module respectively; An input end of the second filter circuit is electrically connected to a DC power supply, and an output end of the second filter circuit is electrically connected to a power supply end of the protective cover control module; The power supply module further includes: a battery power supply circuit, wherein the battery power supply circuit includes a second bidirectional breakdown diode, an eighth resistor, a first Schottky diode and a second Schottky diode; The positive electrode of the first Schottky diode and the positive electrode of the second Schottky diode are electrically connected to the battery respectively, the negative electrode of the first Schottky diode is electrically connected to the input end of the buck circuit, and the negative electrode of the second Schottky diode is electrically connected to the protection cover control module and the power supply end of the protection cover drive motor; The anode of the first Schottky diode is also electrically connected to the anode of the second bidirectional breakdown diode and one end of the eighth resistor, respectively, and the cathode of the second bidirectional breakdown diode and the other end of the eighth resistor are grounded, respectively; The power supply module also includes a battery voltage detection circuit, a motor voltage detection circuit and a main power supply voltage detection circuit; The detection end of the battery voltage detection circuit is electrically connected to the battery, the detection end of the motor voltage detection circuit is electrically connected to the DC power supply, the detection end of the main power supply voltage detection circuit is electrically connected to the output end of the AC-DC conversion circuit, and the output ends of the battery voltage detection circuit, the motor voltage detection circuit and the main power supply voltage detection circuit are electrically connected to the fourth input end of the main control module respectively; The battery voltage detection circuit comprises: a second diode (D11), a third diode (D8), a resistor (R32), a resistor (R33) and a capacitor (C54), wherein the positive electrode of the second diode (D11) serves as a detection end of the battery voltage detection circuit and is electrically connected to the battery, the negative electrode of the second diode (D11) is electrically connected to one end of the resistor (R32), the other end of the resistor (R32) is electrically connected to one end of the capacitor (C54), the positive electrode of the third diode (D8) and one end of the resistor (R33), and at the same time, the negative electrode of the third diode (D8) is electrically connected to the second output end of the step-down circuit, the other ends of the capacitor (C54) and the resistor (R33) are grounded respectively, and the other end of the resistor (R32) also serves as an output end of the battery voltage detection circuit and is electrically connected to the main control module.

2. A control device for a total station protective cover as claimed in claim 1, characterized in that: The protective cover control module further includes: a protective cover position detection circuit, wherein the protective cover position detection circuit includes three photoelectric couplers; A second resistor is connected in parallel between two pins of the light source in each photoelectric coupler, wherein one pin of the light source in each photoelectric coupler is electrically connected to the output end of the protective cover position detection sensor, the other pin of the light source in each photoelectric coupler is electrically connected to the motor power supply through a third resistor, and the second resistor is grounded through a first bidirectional breakdown diode; The output end of the light receiver in each photoelectric coupler is electrically connected to the first input end of the main control module, so as to transmit the position signal of the protective cover to the main control module.

3. A control device for a total station protective cover as claimed in claim 1, characterized in that: The protection cover control module further includes: a temperature detection circuit, wherein the temperature detection circuit includes a fourth resistor, a fifth resistor and a first capacitor; One end of the fourth resistor is electrically connected to the output end of the temperature sensor and one end of the fifth resistor, wherein the temperature sensor is installed in the protective cover; The other end of the fifth resistor and one end of the first capacitor are electrically connected to a 3.3V DC power supply respectively, wherein the other end of the first capacitor is grounded, and the other end of the fourth resistor is electrically connected to the second input end of the main control module.

4. A control device for a total station protective cover as claimed in claim 1, characterized in that: The protection cover control module also includes: a protection cover fan driving circuit, wherein the input end of the protection cover fan driving circuit is electrically connected to the second output end of the main control module, and the output end of the protection cover fan driving circuit is electrically connected to the control interface of the protection cover fan.

5. A control device for a total station protective cover as claimed in claim 1, characterized in that: The control device further comprises: a key detection module, wherein the key detection module comprises six detection circuits; Each of the six detection circuits includes a sixth resistor, a seventh resistor and a first diode, wherein one end of the sixth resistor is electrically connected to the button interface on the protective cover, the other end of the sixth resistor is electrically connected to the third input end of the main control module, and the other end of the sixth resistor is electrically connected to a 3.3V DC power supply through the first diode, and is electrically connected to a 3.3V DC power supply through the seventh resistor.

6. A control device for a total station protective cover as claimed in claim 1, characterized in that: The control device further comprises: a data receiving module, wherein an input end of the data receiving module is electrically connected to the total station, and an output end of the data receiving module is electrically connected to the fifth input end of the main control module for receiving measurement data of the total station.

7. A control device for a total station protective cover as claimed in claim 1, characterized in that: The control device further comprises: a work indication module, wherein the work indication module comprises a signal strength indication circuit, a key control circuit and a device status indication circuit; The signal strength indication circuit includes a plurality of first light emitting diodes for indicating the signal strength of the communication module; The device status indication circuit includes a plurality of second light emitting diodes for indicating the working status of the control device; The button control circuit includes a reset button, wherein the reset button is used to restore the control device to factory settings when pressed.

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