CN105938374A - Reservoir control circuit system - Google Patents

Abstract

The invention provides a reservoir control circuit system, comprising: a host computer, an upper-end controller, a lower-end controller, a data acquisition component, a motor control circuit, and a motor unit; The received monitoring data is sent to the upper-end controller, and the upper-end controller transmits the monitoring data to the upper computer; the lower-end controller automatically or passively according to the monitoring data according to the upper-level control instruction A control signal is sent to the motor control circuit, and the motor control circuit controls the operation of the motor unit in response to the control signal.

Description

A reservoir control circuit system

technical field

The invention relates to the technical field of automatic control, in particular to a reservoir control circuit system.

Background technique

In order to prevent the water level of the reservoir from exceeding the standard, flood discharge needs to be carried out according to the water level. The means of flood discharge are mainly through manual opening of flood discharge pumping or manual opening of flood discharge pump pumping or opening of reservoir gates for flood discharge. However, since manual observation of the water level gauge and manual opening of the flood pump or reservoir gate require manual intervention, depending on the personal factors of the operator, once a manual error occurs, it will affect the safety of the reservoir.

The most important point of the control of the hydrological station is to keep the water level within a certain range. When the water level is too high, it needs to be drained. When the water level is too low, you need to store water. How to automatically control the reservoir through the optimized circuit system is an urgent problem to be solved.

Contents of the invention

Aiming at the defects in the prior art, the object of the present invention is to provide a reservoir control circuit system.

A reservoir control circuit system provided according to the present invention includes: an upper computer, an upper-end controller, a lower-end controller, a data acquisition component, a motor control circuit, and a motor unit;

The lower-end controller sends the monitoring data received from the data acquisition component to the upper-end controller, and the upper-end controller transmits the monitoring data to the upper computer;

The lower-end controller automatically sends a control signal to the motor control circuit according to the monitoring data or passively according to a higher-level control instruction, and the motor control circuit controls the operation of the motor unit in response to the control signal.

As an optimization scheme, it also includes an upper-end wireless communication circuit and a lower-end wireless communication circuit;

The lower-end controller is connected to the lower-end wireless communication circuit, the upper-end controller is connected to the upper-end wireless communication circuit, and the upper-end wireless communication circuit and the lower-end wireless communication circuit are wirelessly connected for communication.

As an optimized solution, both the upper-end wireless communication circuit and the lower-end wireless communication circuit include a CC1100 wireless transceiver chip circuit.

As an optimized solution, the data acquisition component includes a water level ultrasonic sensor and a gate flow sensor.

As an optimized solution, an analog-to-digital converter is also included; the data acquisition component is connected to the lower-end controller through the analog-to-digital converter.

As an optimization scheme, it also includes a digital tube display circuit; the digital tube display circuit is connected to the lower-end controller;

The lower end controller also sends the monitoring data to the nixie tube display circuit.

As an optimization scheme, it also includes an MX232 serial port communication circuit; the upper-end controller communicates with the upper computer through the MX232 serial port communication circuit.

As an optimized solution, the motor control circuit includes an LM298 driver chip circuit.

As an optimization solution, both the upper-end controller and the lower-end controller include an AT89S52 single-chip microcomputer circuit.

As an optimization solution, a TLP521_4 optocoupler circuit is also included; the AT89S52 microcontroller circuit is connected to the motor control circuit through the TLP521_4 optocoupler circuit.

Compared with the prior art, the present invention has the following beneficial effects:

In order to improve the reliability of the system, in this plan, double insurance is carried out: the system is divided into two parts, one is the independent control of the single-chip microcomputer, and the other is the artificial remote control. The whole process runs completely automatically without manual on-site monitoring, which ensures the control speed and accuracy. Using remote control, it is easy to replace and expand the hardware equipment, thus avoiding possible system failures due to system aging. Problems such as damage or failure to work properly, so that the system can continue to operate normally and reduce the occurrence of system failures.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without any creative work. In the attached picture:

Fig. 1 is a structural block diagram of an optional reservoir control circuit system;

Figure 2 is an optional CC1100 wireless transceiver chip circuit;

Fig. 3 is a kind of optional nixie tube display circuit and its drive circuit;

Figure 4 is an optional MX232 serial port communication circuit;

Figure 5 is an optional LM298 driver chip circuit for motor control circuits;

Figure 6 is an optional AT89S52 microcontroller circuit.

detailed description

The present invention will be described in detail below in terms of specific embodiments in conjunction with the accompanying drawings. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It is to be noted that other embodiments may be utilized or structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the invention.

The invention requires monitoring the rainfall and flow of the hydrological station, and automatically controlling the opening/closing of the valve. Use ultrasonic sensor and flow sensor to collect water level, flow and other information, and use CC1100 wireless transceiver chip circuit to realize wireless communication between upper computer and lower computer. The upper computer stores the data, and displays the parameter changes of the reservoir in real time by compiling the VC interface.

In an embodiment of a reservoir control circuit system provided by the present invention, as shown in FIG. 1 , it includes: a host computer, an upper-end controller, a lower-end controller, a data acquisition component, a motor control circuit, and a motor unit;

The lower-end controller sends the monitoring data received from the data acquisition component to the upper-end controller, and the upper-end controller transmits the monitoring data to the upper computer;

The lower-end controller automatically sends a control signal to the motor control circuit according to the monitoring data or passively according to a higher-level control instruction, and the motor control circuit controls the operation of the motor unit in response to the control signal.

A water level control range is preset in the lower-end controller, and when it is detected that the monitoring data exceeds the water level control range, a control signal is automatically sent to the motor control circuit to control the motor unit to rotate forward or reversely, Thereby, the opening degree of the gate is automatically controlled. In addition, the lower-end controller can also control the motor unit according to the control instructions sent by the upper computer.

The reservoir control circuit system also includes an upper-end wireless communication circuit and a lower-end wireless communication circuit;

The lower-end controller is connected to the lower-end wireless communication circuit, the upper-end controller is connected to the upper-end wireless communication circuit, and the upper-end wireless communication circuit and the lower-end wireless communication circuit are wirelessly connected for communication.

Both the upper-end wireless communication circuit and the lower-end wireless communication circuit include the CC1100 wireless transceiver chip circuit shown in FIG. 2 .

The data acquisition component includes a water level ultrasonic sensor and a gate flow sensor.

The reservoir control circuit system can collect data on reservoir water level, flow and other parameters. And the accuracy needs to reach 0.5CM, and the data is transmitted wirelessly. The collected water level, flow and other data need to be transmitted from the lower computer to the upper computer. In order to complete this process, this system adopts the CC1100 wireless transceiver chip circuit, and uses its wireless communication technology to link the upper computer with the lower computer to realize wireless transmission of data. In the process of transmission, no bit errors can occur, or the bit errors should be minimized as much as possible.

The reservoir control circuit system also includes an analog-to-digital converter; the data acquisition component is connected to the lower-end controller through the analog-to-digital converter.

The reservoir control circuit system also includes a nixie tube display circuit as shown in Figure 3; the nixie tube display circuit is connected with the lower end controller;

The lower end controller also sends the monitoring data to the nixie tube display circuit. The digital tube display circuit adopts a four-digit seven-segment LED digital tube display, which is used to display the monitoring data collected by the data acquisition component. The digital tube display circuit displays the time difference through the displayed square wave signal, finds the water level, and displays the size of the water flow collected by the flow sensor. The digital tube display circuit and its drive circuit are shown in Figure 3.

The data transmitted by the sensor is sent to the single-chip microcomputer for processing through A\D conversion, and the corresponding control signal is sent to control the opening and closing of the gate. This process can be directly controlled by the lower computer MCU. In the system, the forward and reverse rotation of the stepper motor is controlled by a single-chip microcomputer to simulate the operation of the valve switch. The collected data is displayed on the PC in the form of graphics or tables to visually monitor the real-time parameters of the reservoir.

The reservoir control circuit system also includes the MX232 serial communication circuit shown in FIG. 4; the upper-end controller communicates with the upper computer through the MX232 serial communication circuit.

The motor control circuit includes the LM298 driver chip circuit shown in FIG. 5 .

Both the upper-end controller and the lower-end controller include the AT89S52 single-chip microcomputer circuit as shown in FIG. 6 .

The reservoir control circuit system also includes a TLP521_4 optocoupler circuit; the AT89S52 microcontroller circuit is connected to the motor control circuit through the TLP521_4 optocoupler circuit.

Use AT89S52 single-chip microcomputer and LM298 drive chip to form the control circuit of the stepping motor shown in Figure 5, and control the forward and reverse rotation of the motor. Stepper motors receive pulse signals, so they are extremely susceptible to interference. In this circuit design, a TLP521_4 optocoupler circuit is added to completely isolate the single-chip microcomputer from the drive circuit of the stepping motor, so as to reduce the interference of the motor pulse on the single-chip microcomputer; Figure 5 also includes four external slots for the single-chip microcomputer, which is convenient for the single-chip microcomputer The use of each interface on the board, the four slots are respectively connected with relevant circuit components.

The AT89S52 single-chip microcomputer is the core part of the simulated reservoir monitoring system. It is used to control the operation of the entire system. The following is its circuit diagram and corresponding equipped circuits. In this system, two AT89S52 single-chip microcomputers are shared, the upper-end controller and the lower-end controller. each piece. The AT89S52 microcontroller in the lower-end controller has three functions: one is to process the information collected by the data acquisition component; the other is to send the processed data information to the CC1100 transceiver chip circuit for transmission; the third is to process the information according to the information processing results , to control the positive and negative rotation of the stepper motor. The AT89S52 microcontroller on the upper end is mainly used to carry the information received by the CC1100 transceiver chip circuit, realize serial communication, and transmit the monitoring data to the upper computer. As shown in Figure 6, the present invention also adds a crystal oscillator circuit between the XTAL1 pin and the XTAL2 pin of the AT89S52 single-chip microcomputer to protect the AT89S52 single-chip microcomputer to ensure the normal operation of the single-chip microcomputer.

As shown in Figure 1, the structure of the reservoir control circuit system is mainly composed of four parts: data collection, single-chip computer operation control, wireless data transmission and reception, and monitoring and analysis on the host computer. The design idea is to send the reservoir parameters collected by the sensor to the single-chip microcomputer for processing through A/D conversion, and then transmit the processing results to the host computer through the CC1100 wireless transceiver chip circuit, and then use the MX232 chip through serial communication technology The data is transmitted to the upper computer, and the situation of the reservoir can be clearly known through the compiled interface on the upper computer, and then the monitored data is analyzed, and the analysis results are fed back to the lower end. After the lower computer receives the feedback information, the The single-chip microcomputer outputs pulses to control the positive and negative rotation of the stepping motor (equivalent to controlling the opening/closing of the valve), so as to realize the real-time control of the flow and water level of the reservoir and ensure the safety of the reservoir.

Since the operating voltage of the CC1100 wireless transceiver chip circuit in the reservoir control circuit system is 3.3V, in order to provide it with a stable voltage, the power module uses a LM1117 voltage regulator, which can generate a 3.3V stabilized voltage. The power supply module also includes a power-on display, a voltage block for supplying power to the stepping motor and the single-chip microcomputer.

The above descriptions are only preferred embodiments of the present invention, and those skilled in the art know that various changes or equivalent replacements can be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, the features and examples may be modified to adapt a particular situation and material to the teachings of the invention without departing from the spirit and scope of the invention. Therefore, the present invention is not limited by the specific embodiments disclosed here, and all embodiments falling within the scope of the claims of the present application belong to the protection scope of the present invention.

Claims (10)

1. A reservoir control circuit system, characterized in that it comprises: a host computer, an upper-end controller, a lower-end controller, a data acquisition assembly, a motor control circuit, and a motor unit; The lower-end controller sends the monitoring data received from the data acquisition component to the upper-end controller, and the upper-end controller transmits the monitoring data to the upper computer; The lower-end controller automatically sends a control signal to the motor control circuit according to the monitoring data or passively according to a higher-level control instruction, and the motor control circuit controls the operation of the motor unit in response to the control signal. 2. The reservoir control circuit system according to claim 1, further comprising an upper-end wireless communication circuit and a lower-end wireless communication circuit; The lower-end controller is connected to the lower-end wireless communication circuit, the upper-end controller is connected to the upper-end wireless communication circuit, and the upper-end wireless communication circuit and the lower-end wireless communication circuit are wirelessly connected for communication. 3. A reservoir control circuit system according to claim 2, characterized in that, both the upper-end wireless communication circuit and the lower-end wireless communication circuit include a CC1100 wireless transceiver chip circuit. 4 . The reservoir control circuit system according to claim 1 , wherein the data acquisition component includes a water level ultrasonic sensor and a gate flow sensor. 5 . 5 . The reservoir control circuit system according to claim 1 , further comprising an analog-to-digital converter; the data acquisition component is connected to the lower-end controller through the analog-to-digital converter. 6. The reservoir control circuit system according to claim 1, further comprising a digital tube display circuit; the digital tube display circuit is connected to the lower-end controller; The lower end controller also sends the monitoring data to the nixie tube display circuit. 7 . The reservoir control circuit system according to claim 1 , further comprising an MX232 serial communication circuit; the host controller communicates with the host computer through the MX232 serial communication circuit. 8. A reservoir control circuit system according to claim 1, characterized in that the motor control circuit comprises an LM298 drive chip circuit. 9. A reservoir control circuit system according to any one of claims 1-8, characterized in that, both the upper-end controller and the lower-end controller include an AT89S52 single-chip microcomputer circuit. 10. A reservoir control circuit system according to claim 9, further comprising a TLP521_4 optocoupler circuit; said AT89S52 microcontroller circuit is connected to said motor control circuit through said TLP521_4 optocoupler circuit.