Self-contained suite circuit for depth finder

Abstract

The utility model discloses a self-contained suite circuit for a depth finder. The self-contained suite circuit comprises a power supply circuit, a main control circuit, a storage circuit, a communication circuit and a downloading circuit, the power supply circuit divides external lithium battery input into two loops: one loop supplies power to each module in the suite circuit; the other path supplies power to the depth finder equipment, and the main control circuit controls the closing and opening of the loop; the master control circuit controls communication and power-on between devices. The storage circuit is responsible for storing measurement data; the communication circuit is used for carrying out conversion between RS232 and TTL (Transistor-Transistor Logic) levels; and the downloading circuit provides a debugging interface for the main control circuit. According to the invention, periodic work of equipment can be ensured and measurement data can be automatically recorded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of integrated circuits, in particular to a self-contained kit circuit for a depth finder. BACKGROUND

[0002] Water depth is an important hydrological element, which is often measured by an echo sounder. The existing depth finder is usually a direct-reading device, and the power supply and communication functions of the depth finder are realized by the upper computer through a cable. Although the direct-reading depth finder has good real-time data, the supporting system is large and cannot be miniaturized and unmanned. SUMMARY

[0003] The purpose of the present application is to provide a self-contained kit circuit for a depth finder to solve the problems in the background art.

[0004] To solve the above technical problems, the present application provides a self-contained kit circuit for a depth finder, comprising: a power supply circuit, a main control circuit, a storage circuit, a communication circuit, and a download circuit.

[0005] The power supply circuit divides the input of the external lithium battery into two loops: one loop supplies power to each module in the kit circuit; the other loop supplies power to the depth finder device and controls the closing and opening of the loop by the main control circuit.

[0006] The main control circuit controls the communication between devices and the power-on;

[0007] The storage circuit is responsible for saving measurement data.

[0008] The communication circuit converts between RS232 and TTL levels.

[0009] The download circuit provides a debugging interface for the main control circuit.

[0010] In one embodiment, the power supply circuit comprises a linear voltage regulator U1, an electronic switch U3, a solid-state relay U4, resistors R3 and R4, and capacitors C1, C2, C4 and C5; wherein,

[0011] The linear voltage regulator U1 is of SSP7603P33MR type, which converts the voltage input by the lithium battery into a 3.3V voltage required for the power supply of the peripheral chip; the GND port of the linear voltage regulator U1 is grounded, the VOUT port is connected to +3.3V voltage and the first end of the capacitor C1, and the VIN port is connected to the first end of the capacitor C2; the second end of the capacitor C1 and the second end of the capacitor C2 are both grounded.

[0012] The model of the electronic switch U3 is MT9700, the VOUT port of the electronic switch U3 is grounded through the capacitor C4, the GND port is grounded, the SET port is grounded through the resistor R3, the VIN port is grounded through the capacitor C5, and the EN port is connected to the control signal;

[0013] The model of the solid-state relay U4 is GAQY211G2S, the 1 pin of the solid-state relay U4 is connected to the control signal through the resistor R4, and the 2 pin is grounded.

[0014] In an embodiment, the main control circuit includes the main control chip U2, resistors R1, R2 and R5, a diode D1, capacitors C3 and C6, and a connector H4; the NRST port of the main control chip U2 is connected to the second end of the resistor R1 and the first end of the capacitor C3, the first end of the resistor R1 is connected to a +3.3V voltage, and the second end of the capacitor C3 is grounded; the VDDA / VREF+ port of the main control chip U2 is connected to the second end of the resistor R2 and the first end of the capacitor C6, the first end of the resistor R2 is grounded, and the second end of the capacitor C6 and the VSS port of the main control chip U2 are both grounded; the second port of the connector H4 is connected to the PC6 port of the main control chip U2 and the anode of the diode D1, the first port of the connector H4 is connected to the cathode of the diode D1 and the first end of the resistor R5, and the second end of the resistor R5 is grounded.

[0015] In an embodiment, the communication circuit includes a transceiver chip U6, capacitors C7, C8, C10, C11 and C12; the communication between the kit circuit, the upper computer and the depth finder all adopts the RS232 standard, and the level conversion is performed when communicating with the main control chip; the model of the transceiver chip U6 is MAX3232ESE+, which can simultaneously convert between two-way RS232 and TTL level; the C1+ port of the transceiver chip U6 is connected to the C1- port through the capacitor C7, the V+ port is grounded through the capacitor C10, the C2+ port is connected to the C2- port through the capacitor C11, the V- port is grounded through the capacitor C12, and the VCC port is grounded through the capacitor C8.

[0016] In an embodiment, the storage circuit includes a storage chip U5 and a capacitor C9; the RESET# port and the VCC port of the storage chip U5 are both grounded through the capacitor C9; the model of the storage chip U5 is W25Q256JVFIQ, the standby state consumes less than 1µA of current, and it can store 32MB of data, meeting the long-time use requirement.

[0017] In an embodiment, the download circuit includes resistors R6 and R7 and a connector H5; the first port of the connector H5 is connected to a +3.3V voltage, the second port is connected to a +3.3V voltage through the resistor R6, the third port is grounded through the resistor R7, and the fourth port is grounded; the download circuit adopts the SWD interface, and 4 wires are needed to complete the program burning and debugging.

[0018] The application provides a self-contained kit circuit for a depth finder, which can ensure periodic operation of the device and automatically record measurement data. The device can automatically work after being laid, and measurement data can be read by a notebook computer or other upper computer software when an inspector regularly inspects. The inspector only needs to replace or charge the battery to ensure that the device can normally work in the next inspection period. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a system block diagram of a self-contained kit circuit for a depth finder provided by the application.

[0020] Figure 2 is a schematic diagram of a power supply circuit provided by the application.

[0021] Figure 3 is a schematic diagram of a main control circuit provided by the application.

[0022] Figure 4 is a schematic diagram of a communication circuit provided by the application.

[0023] Figure 5 is a schematic diagram of a storage circuit provided by the application.

[0024] Figure 6 is a schematic diagram of a download circuit provided by the application. DETAILED DESCRIPTION

[0025] The application provides a self-contained kit circuit for a depth finder, which will be further described in detail below in combination with the drawings and specific embodiments. The advantages and features of the application will be more apparent according to the following description. It should be noted that the drawings are very simplified and all use non-precise proportions, which are only used to facilitate and clarify the purpose of assisting the description of the embodiments of the application.

[0026] The application provides a self-contained kit circuit for a depth finder, which has a system block diagram as shown in Figure 1 The entire circuit mainly includes five parts: a power supply circuit, a main control circuit, a storage circuit, a communication circuit and a download circuit.

[0027] The power supply circuit divides lithium battery input into two loops: one loop supplies power to each module in the kit circuit; the other loop supplies power to the depth finder device and is controlled by the main control circuit of the kit circuit to close and open the loop; the main control circuit controls communication between devices and power-on; the storage circuit is responsible for saving measurement data; the communication circuit converts between RS232 and TTL levels; and the download circuit provides a debugging interface for the main control circuit.

[0028] The structure of the power supply circuit is as shown in Figure 2As shown, including linear voltage regulator U1, electronic switch U3 and solid-state relay U4, resistors R3, R4, capacitors C1, C2, C4, C5;

[0029] The model of linear voltage regulator U1 is SSP7603P33MR, which is a low-power linear voltage regulator. It can convert the voltage input by the lithium battery into 3.3V voltage required for the power supply of peripheral chips. The GND port of linear voltage regulator U1 is grounded, the VOUT port is connected to +3.3V voltage and the first end of capacitor C1, and the VIN port is connected to the first end of capacitor C2; the second end of capacitor C1 and the second end of capacitor C2 are both grounded.

[0030] The model of electronic switch U3 is MT9700, which is a low-power electronic switch. The VOUT port (1 pin) of electronic switch U3 is grounded through capacitor C4, the GND port (2 pin) is grounded, the SET port (3 pin) is grounded through resistor R3, the VIN port (5 pin) is grounded through capacitor C5, and the EN port (4 pin) is connected to the control signal. When the control signal connected to the 4 pin is high, the voltage input from the 5 pin will be output from the 1 pin. This chip is used to control the power supply of peripheral devices. When the depth finder is in standby mode, the power supply of all peripheral devices is disconnected, which maximally reduces the standby power consumption.

[0031] The model of solid-state relay U4 is GAQY211G2S, with a load voltage as high as 40V, far exceeding the lithium battery supply voltage. The 1 pin of solid-state relay U4 provides a resistor R4 connected to the control signal, and the 2 pin is grounded. The control side and the load side are isolated by the internal photoelectric coupling of the relay. When the control signal connected to the 1 pin is high, the internal light-emitting diode of the relay is lit, and the 3 and 4 pins are conductive. At this time, the power supply loop of the depth finder is closed, and the depth finder is powered on.

[0032] The structure of the main control circuit is as shown in Figure 3 It includes main control chip U2, resistors R1, R2, R5, diode D1, capacitors C3, C6 and connector H4; the NRST port of main control chip U2 is connected to the second end of resistor R1 and the first end of capacitor C3, the first end of resistor R1 is connected to +3.3V voltage, and the second end of capacitor C3 is grounded; the VDDA / VREF+ port of main control chip U2 is connected to the second end of resistor R2 and the first end of capacitor C6, the first end of resistor R2 is grounded, and the second end of capacitor C6 and the VSS port of main control chip U2 are both grounded; the second port of connector H4 is connected to the PC6 port of main control chip U2 and the anode of diode D1, the first port is connected to the cathode of diode D1 and the first end of resistor R5, and the second end of resistor R5 is grounded.

[0033] The model of the main control chip U2 is STM32F103RCT6, which only consumes 2µA circuit in standby mode, meets the low power consumption demand, enables two serial ports, one SPI bus, one debugging port and three GPIOs.

[0034] The two serial ports are responsible for the communication between the kit circuit and the depth sounder and the communication between the kit circuit and the host computer respectively; the SPI bus is responsible for the communication between the main control chip and the storage chip; the debugging port is connected to the download circuit, providing an interface for circuit debugging and program downloading; the PC3 port controls the chip selection signal of the storage chip, the PC6 port controls the on-off of the indicator light, and the PB8 port controls the power supply of the peripheral device.

[0035] The structure of the communication circuit is shown in Figure 4 , which includes the transceiver chip U6, capacitors C7, C8, C10, C11 and C12; the communication between the kit circuit and the host computer and the depth sounder both adopts RS232 standard, and the level conversion is needed when communicating with the main control chip. The model of the transceiver chip U6 is MAX3232ESE+, which is a low-power 2-way RS232 transceiver chip and can simultaneously convert between two-way RS232 and TTL level. The C1+ port of the transceiver chip U6 is connected to the C1- port through the capacitor C7, the V+ port is connected to the ground through the capacitor C10, the C2+ port is connected to the C2- port through the capacitor C11, the V- port is connected to the ground through the capacitor C12, and the VCC port is connected to the ground through the capacitor C8.

[0036] The structure of the storage circuit is shown in Figure 5 , which includes the storage chip U5 and the capacitor C9; the RESET# port and the VCC port of the storage chip U5 are both connected to the ground through the capacitor C9. The model of the storage chip U5 is W25Q256JVFIQ, which consumes less than 1µA in standby state and can store 32MB data, meeting the long-time use demand.

[0037] The structure of the download circuit is shown in Figure 6 , which includes resistors R6 and R7 and the connector H5; the first port of the connector H5 is connected to +3.3V voltage, the second port is connected to +3.3V voltage through the resistor R6, the third port is connected to the ground through the resistor R7, and the fourth port is connected to the ground. The download circuit adopts SWD interface, which can complete program burning and debugging with only 4 wires. According to the requirements of the main control chip manual, the SWD pin is pulled up and the CLK pin is pulled down.

[0038] The above description is only a description of the preferred embodiments of the present application, and does not limit the scope of the present application in any way. Any modification or modification made by a person skilled in the art based on the above disclosure is within the protection scope of the claims.

Claims

1. A self-contained kit circuit for a depth finder, characterized by, The application relates to a power supply circuit, a main control circuit, a storage circuit, a communication circuit and a download circuit. The power supply circuit divides the input of an external lithium battery into two circuits: one circuit supplies power to each module in the suite circuit; and the other circuit supplies power to a depth finder device and is controlled by the main control circuit to close and open the circuit. The main control circuit controls the communication between devices and the power-on; The storage circuit is responsible for saving measurement data; The communication circuit converts between RS232 and TTL levels; The download circuit provides a debugging interface for the main control circuit. The power supply circuit comprises a linear voltage stabilizer U1, an electronic switch U3, a solid-state relay U4, resistors R3 and R4, capacitors C1, C2, C4 and C5; wherein, 2. The self-contained package circuit for a depth finder of claim 1, wherein, The linear voltage stabilizer U1 is of SSP7603P33MR type, converts the voltage input by the lithium battery into a 3.3V voltage required by the peripheral chip for power supply; the GND port of the linear voltage stabilizer U1 is grounded, the VOUT port is connected to the +3.3V voltage and the first end of the capacitor C1, and the VIN port is connected to the first end of the capacitor C2; the second end of the capacitor C1 and the second end of the capacitor C2 are both grounded; The electronic switch U3 is of MT9700 type, the VOUT port of the electronic switch U3 is grounded through the capacitor C4, the GND port is grounded, the SET port is grounded through the resistor R3, the VIN port is grounded through the capacitor C5, and the EN port is connected to a control signal; The solid-state relay U4 is of GAQY211G2S type, the 1 pin of the solid-state relay U4 is connected to the resistor R4 to provide a control signal, and the 2 pin is grounded. The main control circuit comprises a main control chip U2, resistors R1, R2 and R5, a diode D1, capacitors C3 and C6 and a connector H4; the NRST port of the main control chip U2 is connected to the second end of the resistor R1 and the first end of the capacitor C3, the first end of the resistor R1 is connected to the +3.3V voltage, and the second end of the capacitor C3 is grounded; the VDDA / VREF+ port of the main control chip U2 is connected to the second end of the resistor R2 and the first end of the capacitor C6, the first end of the resistor R2 is grounded, and the second end of the capacitor C6 and the VSS port of the main control chip U2 are both grounded; the second port of the connector H4 is connected to the PC6 port of the main control chip U2 and the anode of the diode D1, the first port is connected to the cathode of the diode D1 and the first end of the resistor R5, and the second end of the resistor R5 is grounded.

3. The self-contained package circuit for a depth finder of claim 2, wherein, The communication circuit comprises a transceiver chip U6, capacitors C7, C8, C10, C11 and C12; the communication between the suite circuit, the upper computer and the depth finder adopts the RS232 standard, and the level conversion is performed when the main control chip is communicated; the transceiver chip U6 is of MAX3232ESE+ type and can simultaneously convert between two RS232 and TTL levels; the C1+ port of the transceiver chip U6 is connected to the C1- port through the capacitor C7, the V+ port is grounded through the capacitor C10, the C2+ port is connected to the C2- port through the capacitor C11, the V- port is grounded through the capacitor C12, and the VCC port is grounded through the capacitor C8.

4. The self-contained package circuit for a depth finder of claim 1, wherein, ​ 5. The self-contained package circuit for a depth finder of claim 1, wherein, The storage circuit includes a storage chip U5 and a capacitor C9; the RESET# port and the VCC port of the storage chip U5 are both grounded through the capacitor C9; the model of the storage chip U5 is W25Q256JVFIQ, the standby state consumes less than 1 mu A of current, and 32 MB of data can be stored, meeting the long-time use requirement.

6. The self-contained package circuit for a depth finder of claim 1, wherein, The download circuit includes resistors R6 and R7 and a connector H5; the first port of the connector H5 is connected to +3.3 V voltage, the second port is connected to +3.3 V voltage through the resistor R6, the third port is grounded through the resistor R7, and the fourth port is grounded; the download circuit adopts an SWD interface, and 4 wires are needed to complete program burning and debugging.

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