CN211506207U - Novel self-contained ADCP system on-duty circuit - Google Patents

Abstract

The utility model also provides a novel from holding formula ADCP system on duty circuit. The low-power-consumption digital isolator comprises a low-power-consumption interface chip, an isolation power supply, an ultra-low-power-consumption MCU, a low-power-consumption digital isolator and a low-power-consumption optical coupler, wherein the ultra-low-power-consumption MCU is connected with the low-power-consumption optical coupler, the low-power-consumption optical coupler is connected with an original ADCP system, the low-power-consumption digital isolator is respectively connected with the ultra-low-power-consumption MCU and the original ADCP system, the low-power-consumption interface chip is connected with the ultra-low-power-consumption MCU, and the isolation power supply is respectively connected with an external power supply, the low-power-consumption interface chip, the ultra. The utility model discloses a watch-on circuit can not cause very big modification to original ADCP system, reduces the input in the aspect of development cycle and manpower and materials, can also realize the isolation of noise and can not exert an influence to the original system noise of ADCP promptly when realizing the power saving.

Description

Novel self-contained ADCP system on-duty circuit

Technical Field

The utility model relates to an ocean exploration technical field especially relates to a novel from holding formula ADCP system on duty circuit.

Background

The ADCP (acoustic Doppler current profiler) is a device developed based on the acoustic Doppler principle and used for measuring the flow velocity of a water body. The method mainly comprises the steps that sound waves are emitted to a water area to be measured through a transducer, the sound waves are reflected in the water area to be measured, and the water flow velocity is calculated through measuring reflected sound wave signals. The self-contained ADCP puts the ADCP at a fixed position at a fixed point, and the ADCP works in a set mode without special personnel going to a nursing device, so that the flow speed and flow information of a designated area in a period of time is obtained.

As can be seen from the above description, the key design of the self-contained ADCP is to obtain information about the flow rate and flow rate for a longer period of time, i.e., the longer it can work, the better it can work. The operation modes of the general self-contained ADCP are divided into three modes: standby mode, working mode and sleep mode. The sleep mode takes the most time when the self-contained ADCP operates, so if the power consumption of the sleep mode can be reduced, the operating time of the self-contained ADCP can be greatly increased. When the self-contained ADCP is in the sleep mode, only the circuit part of the whole system is in the working state, so how to design a convenient and fast circuit becomes the key design of the whole self-contained ADCP.

At present, the number of self-produced ADCPs in China is small, the number of self-contained ADCPs is small, or the manufactured self-contained ADCP guarding circuit part is too complicated or too power-consuming, and on the other hand, the requirement of ADCP equipment on noise is very strict, so when the guarding circuit is added for the design of the self-contained ADCP system, the newly-added guarding circuit part is fully considered to be incapable of influencing the noise of the original ADCP system

In view of the above, a new self-contained ADCP system watchdog circuit that can solve the above problems is desired.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, thereby providing a novel from holding formula ADCP system on duty circuit.

In order to achieve the above object, the utility model also provides a novel from holding formula ADCP system on duty circuit. The circuit comprises a low-power consumption interface chip, an isolation power supply, an ultra-low power consumption MCU, a low-power consumption digital isolator and a low-power consumption optocoupler,

the ultra-low power consumption MCU is connected with the low power consumption optocoupler and is used for sending a power supply or power failure on-off control instruction of the ADCP system;

the low-power consumption optocoupler is connected with the original ADCP system and is used for isolating a control instruction sent by the ultra-low-power consumption MCU;

the low-power digital isolator is respectively connected with the ultra-low-power MCU and the original ADCP system and is used for isolating signals acquired when the original ADCP system is powered on and then transmitting the signals to the ultra-low-power MCU;

the low-power-consumption interface chip is connected with the ultra-low-power-consumption MCU and used for receiving ADCP system acquisition signals sent by the ultra-low-power-consumption MCU and sending the ADCP system acquisition signals to a serial port of a PC (personal computer);

the isolation power supply is respectively connected with an external power supply, the low-power-consumption interface chip, the ultra-low-power-consumption MCU, the low-power-consumption digital isolator and the low-power-consumption optocoupler and is used for supplying power to each unit and isolating the external power supply from each unit.

Furthermore, the low-power interface chip adopts an RS232 low-power interface chip.

Furthermore, the RS232 low-power consumption interface chip adopts an SN65C3221EPW chip.

Further, the low-power optocoupler adopts a TLP2301 chip.

Further, the ultra-low power consumption MCU adopts an ADuCM4050 chip.

Further, the isolated power supply adopts an LTM8067 chip.

Further, the external power supply is a 12V battery.

The utility model provides a provide a novel from holding formula ADCP system on duty circuit, realize simply on the one hand, be convenient for operate, can not bring too big hardware overhead, can not bring too big design complexity for ADCP system hardware design yet, on the other hand is compatible to be increased promptly this application on duty circuit can not lead to the fact very big modification to original ADCP system, reduce the input in the aspect of development cycle and manpower and materials, this application on duty circuit can also realize the isolation of noise promptly can not exert an influence to the original system noise of ADCP when realizing the power saving at last.

Drawings

Fig. 1 is a schematic block diagram of a novel self-contained ADCP system watch circuit according to an embodiment of the present invention;

fig. 2 is an isolated power circuit diagram of a novel self-contained ADCP system on-duty circuit according to an embodiment of the present invention;

fig. 3 is a circuit diagram of a low power consumption interface chip of a novel self-contained ADCP system watch circuit according to an embodiment of the present invention;

fig. 4 is a circuit diagram of an ultra-low power consumption MCU of a novel self-contained ADCP system watch circuit provided by an embodiment of the present invention;

fig. 5 is a circuit diagram of a digital isolator of a novel self-contained ADCP system on-duty circuit according to an embodiment of the present invention;

fig. 6 is a circuit diagram of a low power consumption optocoupler of a novel self-contained ADCP system watch circuit according to an embodiment of the present invention;

fig. 7 is a switch circuit diagram of an original ADCP system according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be noted that the drawings are merely illustrative and not to be drawn to strict scale, and that there may be some enlargement and reduction for the convenience of description, and there may be some default to the known partial structure.

Fig. 1 is a schematic block diagram of a novel watch-on circuit of a self-contained ADCP system according to an embodiment of the present invention.

As shown in fig. 1, the block is a schematic circuit diagram of the duty circuit part, the left side outside the block represents the user side and the power supply for supplying power to the self-contained ADCP, and the right side represents the original ADCP system. The duty circuit includes: the low-power-consumption digital isolator comprises a low-power-consumption interface chip 1, an isolation power supply 2, an ultra-low-power-consumption MCU3, a low-power-consumption digital isolator 4 and a low-power-consumption optical coupler 5. The low-power digital isolator 4 is respectively connected with the ultra-low-power MCU3 and the original ADCP system. The ultra-low power consumption MCU3 is connected with the low power consumption optical coupler 5, the low power consumption optical coupler 5 is connected with the original ADCP system, and the isolation power supply 2 is respectively connected with the external power supply, the low power consumption interface chip 1, the ultra-low power consumption MCU3, the low power consumption digital isolator 4 and the low power consumption optical coupler 5.

The ultra-low power consumption MCU3 is mainly responsible for sending the power supply or power failure on-off control instruction of the ADCP system, and further controlling the power supply or power failure of the original ADCP system. And transmitting the signals acquired when the original ADCP system transmitted by the low-power-consumption digital isolator 4 is powered on to the low-power-consumption interface chip 1. The low-power optocoupler 5 is mainly responsible for isolating and controlling the power supply or power failure of the original ADCP system according to a control instruction of the ultra-low-power MCU 3. The low-power digital isolator 4 is mainly responsible for isolating signals acquired when the original ADCP system is powered on and then transmitting the signals to the ultra-low-power MCU. The low-power consumption interface chip is mainly responsible for receiving ADCP system acquisition signals sent by the ultra-low-power consumption MCU and sending the ADCP system acquisition signals to the serial port of the PC. The isolation power supply is mainly responsible for supplying power to each unit of the on-duty circuit and isolating the external power supply from each unit of the on-duty circuit.

As shown in fig. 1, the duty circuit part communicates with the original ADCP system through a serial port, and whether the original ADCP system is powered on or not is controlled by the ultra-low power consumption MCU3 to power on or off the low power consumption optocoupler 5. When the ultra-low power consumption MCU3 powers off the original ADCP system, the whole system enters a sleep state, and the self-contained ADCP system only works on the duty circuit part at the moment. After entering the sleep state, as shown in fig. 1, at this time, the isolation power supply 2 of the watchdog circuit supplies power through an external 12V power supply, and then generates a 3.3V power supply through the isolation power supply to supply power to the relevant chips of the watchdog circuit, including the low-power interface chip 1, the isolation power supply 2, the ultra-low power MCU3, the low-power digital isolator 4, and the low-power optocoupler 5. The isolation power supply 2 is selected to isolate the noise influence on the whole system caused by the power supply of the external power supply.

As shown in fig. 1: the client, namely the PC and the original ADCP system, realize the communication by taking the guard circuit as an intermediate bridge, and the guard circuit mainly realizes the function of the bridge is an ultra-low power consumption MCU 3.

When in work: the ultra-low power consumption MCU3 controls the low power consumption optocoupler 5 to be electrified at intervals, namely, the original ADCP system is controlled to be electrified at intervals to measure the water flow velocity, and the measurement signal is transmitted to the low power consumption digital isolator 4, the low power consumption digital isolator 4 carries out signal isolation and then transmits the measurement signal to the ultra-low power consumption MCU3, and the ultra-low power consumption MCU3 transmits the measurement signal to the serial port of the PC at the client through the low power consumption interface chip 1, so that the communication between the PC and the original ADCP system is realized.

As can be seen from fig. 1 and the above description, an isolation power chip capable of realizing 12V to 3.3V conversion, an ultra-low power consumption MCU, a low power consumption interface chip, a low power consumption digital isolator, and a low power consumption optocoupler need to be selected. The isolation power supply selects LTM8067 of Linte company, has high isolation of 2kVAC, wide input voltage of 2.8V-40V and adjustable output voltage of 2.5V-24V, maximally supports output current of 450mA, and meets the requirement. The ultra-low power consumption MCU selects ADuCM4050 of ADI company, has uA-level ultra-low power consumption, is powered by a single power supply with working voltage of 1.74V-3.6V, has two serial UARTs and an RTC clock, and meets the design requirement. The low-power consumption interface chip is a low-power consumption interface chip, particularly an SN65C3221EPW chip which has low current consumption of 10uA and power supply voltage of 3V-5.5V and meets design requirements, the low-power consumption digital isolator and the low-power consumption optical coupler are ADUM121N and TLP2301 chips, and a circuit schematic diagram of a specific implementation scheme is shown in FIG. 2.

As shown in fig. 2, U2 is the isolated power supply, +12V and GND are the input of the 12V battery, its output is 3.3V, and the isolated ground GND _ I, and the watch circuit part uses this ground as the reference ground. As shown in FIG. 3, U3 is a low power consumption RS232 interface chip SN65C3221EPW, where RIN and DOUT are serial signals connected to the PC side of the upper computer, and ROUT and DIN are serial signals connected to the on-duty circuit U1. As shown in fig. 4, U1, i.e. the ultra-low power MCU of the watch circuit, has two UARTs, wherein UART0 is in communication with the PC side of the upper computer, and the other UART1 is in communication with the original ADCP system. As shown in fig. 5, U4 is a digital isolator, the left UART1_ RX and UART1_ TX of U4 are connected to the ultra low power MCU3 of fig. 3, the right UART1_ RX _ original and UART1_ TX _ original are connected to the serial port of the original ADCP system, and the 5 pins and 8 pins of the chip are connected to the GND _ original and +3.3V _ original of the original ADCP system, respectively. As shown in fig. 6, U5 is a low power consumption optical coupler, its 1 pin is connected to the ultra low power consumption MCU, and 55 pins of the ultra low power consumption MCU3 in fig. 3 control the power-off and power-on of the original ADCP system, and in addition, its 6 pins are connected to a main switch KEY _ original, as shown in fig. 7, this switch is a switch in the original ADCP system, and is a switch for controlling whether to supply power to the original ADCP system, and is controlled by the ultra low power consumption MCU3 in fig. 4 through the low power consumption optical coupler U5.

To sum up, the utility model provides a novel from holding formula ADCP system on duty circuit, realize simply on the one hand, be convenient for operate, can not bring too big hardware overhead, also can not bring too big design complexity for ADCP system hardware design, on the other hand is compatible to be increased this application on duty circuit promptly and can not cause very big modification to original ADCP system, reduce the input in the aspect of development cycle and manpower and materials, this application on duty circuit can also realize the isolation of noise promptly can not exert an influence to the original system noise of ADCP when realizing the power saving at last.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. A novel self-contained ADCP system on-duty circuit is characterized by comprising a low-power consumption interface chip, an isolation power supply, an ultra-low power consumption MCU, a low-power consumption digital isolator and a low-power consumption optocoupler,

the ultra-low power consumption MCU is connected with the low power consumption optocoupler and is used for sending a power supply or power failure on-off control instruction of the ADCP system;

the low-power consumption optocoupler is connected with the original ADCP system and is used for isolating a control instruction sent by the ultra-low-power consumption MCU;

the low-power digital isolator is respectively connected with the ultra-low-power MCU and the original ADCP system and is used for isolating signals acquired when the original ADCP system is powered on and then transmitting the signals to the ultra-low-power MCU;

the low-power-consumption interface chip is connected with the ultra-low-power-consumption MCU and used for receiving ADCP system acquisition signals sent by the ultra-low-power-consumption MCU and sending the ADCP system acquisition signals to a serial port of a PC (personal computer);

the isolation power supply is respectively connected with an external power supply, the low-power-consumption interface chip, the ultra-low-power-consumption MCU, the low-power-consumption digital isolator and the low-power-consumption optocoupler and is used for supplying power to each unit and isolating the external power supply from each unit.

2. The novel self-contained ADCP system on-duty circuit of claim 1, wherein said low power consumption interface chip is RS232 low power consumption interface chip.

3. The novel self-contained ADCP system on-duty circuit of claim 2, wherein said RS232 low power consumption interface chip is SN65C3221EPW chip.

4. The novel self-contained ADCP system duty circuit of claim 1, wherein said low power optocoupler is a TLP2301 chip.

5. The novel self-contained ADCP system on-duty circuit of claim 1, wherein said ultra-low power MCU employs ADuCM4050 chip.

6. The novel self-contained ADCP system on-duty circuit of claim 1, wherein said isolated power supply is LTM8067 chip.

7. The novel self-contained ADCP system on-duty circuit of claim 1, wherein said external power source is a 12V battery.

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