Remote data acquisition controller

Abstract

The utility model discloses a remote data acquisition controller. The remote data acquisition controller provides remote communication of data information in the aspects of data remote acquisition and control, realizes data remote transmission of 4G technology by using an SIM card, transmits local data to a cloud platform, and obtains instruction parameters issued by the cloud platform. The system has the advantages of less hardware, small size, long transmission distance, high real-time performance and the like. Operation and maintenance are convenient, and cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of remote digital control, and particularly relates to a remote data acquisition controller. Background Technique

[0002] In the field of digital informatization, remote communication of data is required in many occasions, and it is required that the communication has good real-time performance and high accuracy. Otherwise, it will affect the monitoring performance and even cause the control ability to decline.

[0003] CN200810243670.0 provides a method for implementing a dynamic partial reconfigurable embedded data controller chip. The FPGA chip is used to implement the dynamic partial reconfigurable embedded data controller chip. The CoreConnect bus architecture and the PLB bus are used to connect high-performance processor cores, memory controllers, and basic peripheral chip cores. The reconfigurable part is connected through the OPB bus. All device resources within the width occupied by the reconfigurable module belong to the reconfigurable module, and the boundary of the reconfigurable module must be determined and unchanged. When there is communication between modules, Bus Macro is used at the boundary.

[0004] CN202322455526.6 provides a data controller with high operating stability, which can improve the operating stability of the controller and improve the installation and disassembly efficiency.

[0005] However, the above applications all have specific application scopes and are optimized for specific scenarios, and cannot meet other technical requirements. Summary of the Utility Model

[0006] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a remote data acquisition controller, which can adapt to a control power supply of DC7V - DC30V, and at the same time, the method of data acquisition and transmission is simple, applying a standard communication protocol, which can be easily connected to various acquisition devices, with reliable performance, few components of the device, small volume, and long service life.

[0007] The remote data acquisition controller according to the first aspect embodiment of the utility model is characterized in that it includes:

[0008] A remote communication module, which realizes 4G communication function based on the SLM322 chip and obtains 4G traffic by using a SIM card;

[0009] A power signal control module, the power supply connected to its power input terminal is between DC7V - DC30V;

[0010] The data exchange module includes an RS485 serial communication circuit, a digital input circuit, an analog input circuit, and a digital output circuit; the RS485 serial communication circuit, the digital input circuit, the analog input circuit, and the digital output circuit are respectively connected to the SLM322 chip;

[0011] The operation control module has an interface connected to an external debugging device, and real-time monitors the operation status of the controller and is connected to the SLM322 chip.

[0012] The remote data acquisition controller according to the embodiment of the present invention has at least the following beneficial effects:

[0013] The remote data acquisition controller collects on-site analog signals, digital signals, and obtains the operation parameters and acquisition data of on-site devices through the 485 serial port, connects the collected data to the SIM card, and uploads it to the cloud platform using 4G technology. According to the data parameters obtained from the cloud platform, it outputs passive node instructions or transmits them to on-site devices through the 485 interface. The communication and operation status of the device are indicated by LED diodes, and the USB interface is used to connect to the monitoring software, which can set the operation parameters of the device and real-time monitor the operation status of the device. The data transmission is simple and reliable, with few components, small device volume, easy to install, wire, and convenient to use.

[0014] According to some embodiments of the present invention, the power signal control module includes:

[0015] The first chip, the 1st and 2nd interfaces of the first chip are grounded, the 3rd and 4th interfaces are connected to one side of the fuse, and the other side of the fuse is connected to the input end of the power signal control module; a first resistor is connected in series between the power input end and the ground wire;

[0016] The second chip, an eighth capacitor is connected in series between the 1st and 6th interfaces of the second chip, the 2nd interface is grounded, the 3rd interface is divided into two paths, one path is grounded after being connected in series with a ninth resistor, and the other path is connected to the power output end after being connected in series with a tenth resistor, and a ninth capacitor is connected in parallel at both ends of the tenth resistor; the 4th interface of the second chip is connected to one side of the fifth resistor, the other side of the fifth resistor is respectively connected to the power input end and one side of the fourth resistor, and the other side of the fourth resistor is grounded; the 5th interface of the second chip is connected to the power input end; the 6th interface of the second buck chip is connected to one side of the first capacitor, and the other side of the first capacitor is connected to the power output end;

[0017] A second capacitor, a seventh capacitor, a tenth capacitor, and a twenty-second capacitor are connected in parallel between the power output end and the ground wire.

[0018] According to some embodiments of the present utility model, the second chip is an RY8411DC-DC single-channel synchronous output step-down chip, and the power output terminal is powered by a 4V DC power supply.

[0019] According to some embodiments of the present utility model, the first capacitor, the fourth capacitor, and the eighth capacitor are 100 uF, the fifth resistor is 100 K ohms, the ninth resistor is 20 K ohms, the tenth resistor is 82 K ohms, the ninth capacitor is 1 nF, the second capacitor, the seventh capacitor, and the twenty-second capacitor are 4.7 uF, and the tenth capacitor is 1000 uF.

[0020] According to some embodiments of the present utility model, the RS485 serial communication circuit includes:

[0021] A fourth chip, where the fourth chip is an SP3485 half-duplex low-power transceiver. The RO interface of the fourth chip is connected to the RXD interface of the first chip through a first combined circuit composed of a field effect transistor and a resistor; the DI interface of the fourth chip is connected to the TXD interface of the first chip through a second combined circuit composed of a field effect transistor and a resistor; the RE and DE interfaces of the fourth chip are connected to the DE interface of the first chip through an eighth circuit composed of a field effect transistor and a resistor.

[0022] According to some embodiments of the present utility model, the A and B pins of the fourth chip are connected to the externally connected serial interfaces 485A and 485B through level conversion input.

[0023] According to some embodiments of the present utility model, when the analog signal is current input, the analog input circuit converts the input current signal into a voltage signal through voltage division by the fifteenth resistor and the eighteenth resistor, and then outputs it to the ADC1 interface of the SLM322 chip through conversion by an operational amplifier;

[0024] When the analog signal is voltage, the voltage signal is divided by the fortieth resistor and the forty-first resistor, and after being converted by an operational amplifier, it is input to the ADC2 interface of the SLM322 chip.

[0025] According to some embodiments of the present utility model, the operation control circuit uses a USB interface to realize connection with an external debugging device.

[0026] According to some embodiments of the present utility model, the operation control circuit realizes the status display of the controller through an LED lamp.

[0027] According to some embodiments of the present utility model, the data exchange module includes analog-to-digital conversion to collect analog quantities and digital quantities input, and collects data through a 485 interface using the Modbus protocol.

[0028] According to some embodiments of the present utility model, the remote communication module establishes a remote data connection with the remote cloud platform to complete data exchange.

[0029] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, wherein:

[0031] Figure 1 is a schematic structural diagram of the remote data acquisition controller according to an embodiment of the present utility model;

[0032] Figure 2 is a circuit diagram of the power signal control module in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0033] Figure 3 is a circuit diagram of the RS485 serial communication circuit in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0034] Figure 4 is a circuit diagram of the SLM322 chip interface in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0035] Figure 5 is a circuit diagram of the analog quantity input circuit in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0036] Figure 6 is a circuit diagram of the digital quantity input circuit in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0037] Figure 7 is a circuit diagram of the digital quantity output circuit in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0038] Figure 8 is a schematic diagram of the HK32F030MF4P6 interface circuit in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0039] Figure 9 is a circuit diagram of the 4G communication circuit in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0040] Figure 10 is a circuit diagram of the reset circuit in the remote data acquisition controller provided in Embodiment II of the present utility model;

[0041] Figure 11This is the circuit diagram of the diode indication circuit in the remote data acquisition controller provided by the second embodiment of the present utility model;

[0042] Figure 12 This is the circuit diagram of the USB interface circuit in the remote data acquisition controller provided by the second embodiment of the present utility model. Detailed implementation manners

[0043] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0044] In the description of the present utility model, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

[0045] In the description of the present utility model, the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.

[0046] In the description of the present utility model, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present utility model in combination with the specific content of the technical solution.

[0047] As a common electronic component, a data acquisition controller often needs to achieve remote communication of data, and requires good real-time performance and high accuracy of communication to improve the monitoring effect; at the same time, it is also necessary to reduce the volume as much as possible to reduce costs, facilitate replacement, and at the same time pursue being applicable to multiple scenarios.

[0048] Embodiment 1

[0049] An embodiment of the present application provides a remote data acquisition controller, as Figure 1 shown, specifically including:

[0050] The remote communication module realizes the 4G communication function based on the SLM322 chip and obtains 4G traffic using a SIM card.

[0051] To realize the 4G communication function, install a SIM card to obtain 4G communication traffic, transmit the collected parameters to the remote cloud platform through 4G technology, and at the same time receive data from the remote cloud platform through 4G to complete remote data exchange.

[0052] The power signal control module, the power input of which is connected to a power supply between DC7V - DC30V.

[0053] To increase the range of the input power supply to improve the adaptability of the controller, this module uses a voltage stabilization circuit composed of a voltage stabilization module RY8411 to output a 4V DC power supply for power supply.

[0054] The data exchange module includes an RS485 serial communication circuit, a digital input circuit, an analog input circuit, and a digital output circuit; the RS485 serial communication circuit, digital input circuit, analog input circuit, and digital output circuit are respectively connected to the SLM322 chip.

[0055] The data exchange module collects analog and digital signals, receives remote data and outputs it through passive nodes and the RS485 serial port.

[0056] The operation control module has an interface connected to an external debugging device, and real - time monitors the operation status of the controller and is connected to the SLM322 chip.

[0057] The operation status is displayed through an LED indicator light and is connected to the device debugging software through an external USB interface. At the same time, communication parameters can also be set to real - time monitor the operation status of the running controller.

[0058] Embodiment 2

[0059] Furthermore, the above - mentioned Embodiment 1 provides a basic remote data acquisition controller. In order to more clearly understand the purpose of this application and understand the advantages of this application, the implementation process of each module will now be described in more detail.

[0060] The remote data acquisition controller provided by the second embodiment of this application includes:

[0061] (1) The power signal control module.

[0062] The circuit of the power signal control module is as Figure 2As shown in the figure, the input voltage is DC7V - DC30V. F1 is a fuse to prevent component damage caused by excessive voltage. D1 is for rectification to prevent component damage due to reverse power supply polarity. U2, namely RY8411, is a DC - DC single - channel synchronous output buck chip with an output voltage of 4V and an input voltage of 4 - 40V. Considering the voltage drop of the diode and other errors, it can achieve a relatively wide range of DC voltage input from DC7V to DC30V.

[0063] This circuit consists of a voltage - regulating component RY8411, capacitors, resistors, and inductors. The resistor - capacitor and inductor circuits are for filtering and voltage regulation to ensure power quality. The output voltage is DC4V, providing power for various other components. The capacitor at the output end can stabilize the voltage and eliminate ripples and glitches.

[0064] (2) Data exchange module. It can be divided into

[0065] RS485 serial communication circuit.

[0066] As Figure 3 shown, 485A and 485B are serial interfaces connected to the outside. They are input to pins A and B of the SP3485 integrated circuit after level conversion. SP3485 is a half - duplex low - power transceiver, realizing differential input and output for driving and receiving, and increasing the voltage range of serial port data transmission. The pins RO, DI, RE, and DE of SP3485 are connected to the corresponding pins of the integrated circuit SLM322 through a circuit composed of a field - effect transistor and a resistor, as Figure 4 shown. This serial port circuit realizes data communication between the Modbus protocol and on - site devices and collects on - site data.

[0067] Digital input circuit, analog input circuit.

[0068] The analog input circuit is as Figure 5 shown. When the analog quantity is a 4 - 20mA current input, first convert the current signal into a voltage signal through voltage division by R15 and R18 in the figure, and then convert it by the operational amplifier and output to ADC1; when the analog signal is a voltage, after resistor voltage division and conversion by the operational amplifier, it is input to ADC2. ADC1 and ADC2 are input to the analog - to - digital conversion pins of SLM322 for analog - to - digital conversion.

[0069] The digital input circuit is as Figure 6 shown. DI1 and DI2 are two - way digital input circuits. When there is an input signal, the optocoupler conducts, and the light - emitting diodes D12 and D13 light up. D1_IN and D2_IN connected to the pins of SLM322 are at low level; otherwise, the optocoupler does not conduct, the light - emitting diodes are off, and D1_IN and D2_IN are at high level. The light - emitting diodes can indicate the input of switch quantity signals, and the optocoupler realizes isolation from external signals.

[0070] The digital quantity output circuit is as follows Figure 7 shown. It isolates and outputs passive dry contacts through relays. When PA1 and PA2 are at high levels, the corresponding field-effect transistors Q11 and Q12 conduct, the coils of relays K1 and K2 are energized, the normally open contacts close, and the normally closed contacts open. At the same time, the light-emitting diode indicators D8 and D11 light up; otherwise, the field-effect transistors are cut off, the relays lose power, the normally open contacts open, the normally closed contacts close, and the light-emitting diode indicators go out. The light-emitting diodes can be used to indicate whether there is an output instruction for the digital quantity signal, and this instruction can control the on-site equipment. PA1 and PA2 are connected to the pins of the microprocessor HK32F030MF4P6, as Figure 8 shown. The microprocessor HK32F030MF4P6 is connected to an external programmer through the data transmission pin SWDIO and the clock interface SWCLK pin via interface J2. The program of the microprocessor can be downloaded through this serial port to achieve the designed functions. At the same time, the microprocessor HK32F030MF4P6 is connected to SLM322 through pins IO7, IO20, IO22, and IO23 to control SLM322.

[0071] (3) Remote communication module.

[0072] Data transmission completes the data communication from the local to the cloud platform through 4G technology, as Figure 9 shown. J4 is a SIM card base. A 4G card with traffic enabled can be installed in the base. Connect the VCC and GND pins of the SIM card to the DC power supply. The other IOs are data pins, the CLK is the clock pin, and the RST is the reset pin, which are respectively connected to the pins SIM_DAT, SIM_CLK, and SIM_RST of the SIM special interface of the integrated current SLM322. In the figure, SRV05-4 is a static suppression diode, which can suppress the high voltage generated by transient current and protect the SIM card and other components. SLM322 obtains the authorization for 4G transmission through the SIM card, and the local data is wirelessly transmitted to the cloud platform through an externally installed antenna, as Figure 1 shown, to achieve long-distance data communication and intelligent remote monitoring.

[0073] (4) Operation control module. It includes:

[0074] Reset circuit, as Figure 10 shown. When the button is pressed, the field-effect transistor Q7 conducts, PRST is connected to the low level, and a low voltage is output to SLM322 to achieve the reset operation of SLM322. When the button is released, the field-effect transistor Q7 is cut off, and PRST returns to the 1.8V level.

[0075] Diode indication circuit, as Figure 11As shown, D6 is the power indicator. When the power is turned on, a 4V control voltage is generated and the light-emitting diode D6 lights up. The light-emitting diode D5 is the network connection indicator. When the device's network is connected, the light-emitting diode D5 lights up and remote communication can be carried out. The light-emitting diode D3 is the network transmission indicator. When data is being sent, this indicator blinks.

[0076] The USB interface circuit, as Figure 12 shown, uses the dedicated USB interface pins UD B_DP and USB_DM of the chip SLM322 to connect to the USB interface module J3. The VBUS and GND of J3 are connected to the positive and negative poles of the power supply to achieve the communication connection of the USB protocol. Through this interface, communication with the external monitoring software can be achieved, and the operating status of the device can be monitored in real time and the operating parameters can be read.

[0077] Based on the device acquisition controller provided in the above embodiments, the following advantages can be achieved:

[0078] 1. The input voltage range is large, from DC7V to DC30V, and different standard voltages such as DC12V, DC15V, DC24V, etc. can be selected.

[0079] 2. The data acquisition interface can be used in various ways, and analog quantities, digital quantities, RS485 serial port connection methods, etc. can be input.

[0080] 3. Low cost, small volume, convenient for transportation, installation and replacement; there are various indicators on the device, which is convenient for debugging. With the wide application of digital intelligence, it brings good economic benefits to the company.

[0081] The device embodiments described above are only illustrative. The units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0082] Those of ordinary skill in the art will understand that all or some of the steps and systems disclosed above can be implemented as software, firmware, hardware, and their appropriate combinations. Some physical components or all physical components can be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or can be implemented as hardware, or can be implemented as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which can include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cassettes, tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that a communication medium typically contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and can include any information delivery medium.

[0083] The above is a specific description of the preferred embodiment of the present application, but the present application is not limited to the above-mentioned implementation manners. Those skilled in the art can also make various equivalent deformations or substitutions without departing from the spirit of the present application, and these equivalent deformations or substitutions are all included within the scope defined by the claims of the present application.

Claims

1. A remote data acquisition controller, characterized in that, Including: A remote communication module that implements 4G communication functions based on the SLM322 chip and obtains 4G traffic using a SIM card; A power signal control module, where the power supply connected to its power input terminal is between DC7V and DC30V; A data exchange module, including an RS485 serial communication circuit, a digital input circuit, an analog input circuit, and a digital output circuit; the RS485 serial communication circuit, the digital input circuit, the analog input circuit, and the digital output circuit are respectively connected to the SLM322 chip; An operation control module, having an interface connected to an external debugging device, and real-time monitoring the operation status of the controller, and is connected to the SLM322 chip.

2. The remote data acquisition controller according to claim 1, characterized in that, The power signal control module includes: A first chip, where the 1st and 2nd interfaces of the first chip are grounded, the 3rd and 4th interfaces are connected to one side of a fuse, and the other side of the fuse is connected to the input terminal of the power signal control module; a first resistor is connected in series between the power input terminal and the ground wire; A second chip, where an eighth capacitor is connected in series between interface 1 and interface 6 of the second chip, interface 2 is grounded, interface 3 is divided into two paths, one path is grounded after being connected in series with a ninth resistor, and the other path is connected to the power output terminal after being connected in series with a tenth resistor, and a ninth capacitor is connected in parallel across the two ends of the tenth resistor; interface 4 of the second chip is connected to one side of a fifth resistor, the other side of the fifth resistor is respectively connected to the power input terminal and one side of a fourth resistor, and the other side of the fourth resistor is grounded; interface 5 of the second chip is connected to the power input terminal; interface 6 of the second chip is connected to one side of a first capacitor, and the other side of the first capacitor is connected to the power output terminal; A second capacitor, a seventh capacitor, a tenth capacitor, and a twenty-second capacitor are connected in parallel between the power output terminal and the ground wire.

3. The remote data acquisition controller according to claim 2, characterized in that, The second chip is a RY8411DC-DC single-channel synchronous output buck chip, and the power output terminal is powered by a 4V DC power supply.

4. The remote data acquisition controller according to claim 2, characterized in that, The first capacitor, the fourth capacitor, and the eighth capacitor are 100uF, the fifth resistor is 100K ohms, the ninth resistor is 20K ohms, the tenth resistor is 82K ohms, the ninth capacitor is 1nF, the second capacitor, the seventh capacitor, and the twenty-second capacitor are 4.7uF, and the tenth capacitor is 1000uF.

5. The remote data acquisition controller according to claim 2, characterized in that, The RS485 serial communication circuit includes: A fourth chip, the fourth chip is a SP3485 half-duplex low-power transceiver, the RO interface of the fourth chip is connected to the RXD interface of the first chip through a first combined circuit composed of a field effect transistor and a resistor; the DI interface of the fourth chip is connected to the TXD interface of the first chip through a second combined circuit composed of a field effect transistor and a resistor; the RE and DE interfaces of the fourth chip are connected to the DE interface of the first chip through an eighth circuit composed of a field effect transistor and a resistor.

6. The remote data acquisition controller according to claim 5, characterized in that, The A and B pins of the fourth chip are connected to the externally connected serial interfaces 485A and 485B through level conversion inputs.

7. The remote data acquisition controller according to claim 1, wherein When the analog signal is current input, the analog input circuit converts the input current signal into a voltage signal through voltage division by the fifteenth resistor and the eighteenth resistor, and then outputs it to the ADC1 interface of the SLM322 chip through conversion by the operational amplifier; When the analog signal is voltage, the voltage signal is divided by the fortieth resistor and the forty-first resistor, and is input to the ADC2 interface of the SLM322 chip after conversion by the operational amplifier.

8. The remote data acquisition controller according to claim 1, characterized in that, The operation control module uses a USB interface to realize connection with an external debugging device.

9. The remote data acquisition controller according to claim 1, characterized in that The operation control module realizes the status display of the controller through an LED lamp.

10. The remote data acquisition controller according to claim 1, wherein, The data exchange module includes analog-to-digital conversion to collect analog quantities and digital inputs, and collects data through a 485 interface using the Modbus protocol.

11. The remote data acquisition controller according to claim 1, wherein, The remote communication module establishes a remote data connection with a remote cloud platform to complete data exchange.

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