CN210692436U

CN210692436U - Underwater self-powered power supply management device and underwater self-powered instrument

Info

Publication number: CN210692436U
Application number: CN201921997452.6U
Authority: CN
Inventors: 崔辰元; 杜立彬; 陈光源; 贺海靖; 雷卓; 吴承璇
Original assignee: Oceanographic Instrumentation Research Institute Shandong Academy of Sciences
Current assignee: Oceanographic Instrumentation Research Institute Shandong Academy of Sciences; Institute of Oceanographic Instrumentation Shandong Academy of Sciences
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-06-05
Anticipated expiration: 2029-11-19

Abstract

The utility model relates to an ocean measurement technical field, an instrument equipment is from last electric power management device specifically says so under water. An underwater self-powered power supply management device comprises a shell, a power supply management module arranged in the shell, and a control lead connected with the power supply management module and used for controlling the on-off of a circuit of the power supply management module; the control lead penetrates out of the shell and is directly contacted with seawater; the power management module is connected with the power utilization module through a power line and controls the on-off of the power supply circuit. The utility model has the advantages that: the circuit board is automatically powered after underwater instrument equipment enters water only through the characteristics of seawater without additional materials and elements. Through the special design to power supply circuit, avoided underwater instrument and equipment not before the work consumption of battery power, guaranteed that there is sufficient electric quantity to accomplish required measurement work in the instrument and equipment use, simple structure, the stable performance, simple and convenient during the circuit test.

Description

Underwater self-powered power supply management device and underwater self-powered instrument

Technical Field

The utility model relates to an ocean measurement technical field, the underwater instrument equipment that specifically says so is from last electric power management device.

Background

The flow velocity of seawater is a very important parameter in marine hydrological measurement, and measurement data of the seawater is applied to a plurality of fields such as marine investigation, scientific research, military application and the like. The measuring method of the ocean flow velocity comprises a buoy drift method, a fixed point measuring method, a ship-borne navigation measuring method and a jettison navigation measuring method. The expendable measuring instrument is emphasized and developed and applied rapidly by the advantages of rapid and economical measurement, simple and convenient operation, concealed measurement and the like. The probe is internally provided with a sensor, and the acquired signals need to be processed and then transmitted. Because the power is supplied by using the battery in the probe, the circuit power supply system is required to be ensured to be disconnected before the probe is not drained, and the electric quantity of the battery is ensured not to be lost before measurement; and during measurement, the power supply circuit is switched on to supply power to the whole acquisition system. However, due to the requirements of probe sealing, pressure bearing and the like, a switch cannot be installed outside the probe. The existing power supply methods for the disposable probe comprise coating of a conductive coating material, fusing, external power supply and the like, and the conductive power supply is realized by external means such as a conductive coating, a fusing resistor or an excitation signal of an upper computer and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a power management device and a method for self-electrifying a jettisonable measuring instrument, which only switch on the internal circuit of a probe through the conductivity of seawater without the help of coating materials and other components to start power supply; after leaving the sea water, the circuit can not be conducted, and the power supply is stopped.

The utility model discloses realize that the technical scheme that its purpose adopted is: an underwater self-powered power supply management device comprises a shell, a power supply management module arranged in the shell, and a control lead connected with the power supply management module and used for controlling the on-off of a circuit of the power supply management module; the control lead penetrates out of the shell and is directly contacted with seawater; the power management module is connected with the power utilization module through a power line and controls the on-off of the power supply circuit.

The power management module comprises a relay and a battery module; the control lead is connected with a control pin of the relay; the positive electrode and the negative electrode of the battery module are connected with the normally open contact of the relay through two power lines; the movable contact of the relay is connected with the positive electrode and the negative electrode of the electricity utilization module through two power lines; the normally closed contact of the relay is connected with the seawater ground through two power lines.

The power management module further comprises a resistance-capacitance circuit, and the resistance-capacitance circuit is connected in a circuit between the battery module and the power utilization module.

The resistance-capacitance circuit is connected with the movable contact of the relay, two contacts are led out of the resistance-capacitance circuit, and the contacts are connected with a seawater ground.

And a triode is connected in series between the relay and the control lead.

The relay is a magnetic latching relay.

The utility model discloses in, power consumption module be the instrument and equipment and the circuit etc. that need the electric energy to work under water, for example: various sensors, signal conditioning circuitry, etc.

The utility model also provides an underwater self-powered instrument, which comprises the underwater self-powered power management device and a power utilization module; the power utilization module is connected with a power management module of the underwater self-power-on power management device, and automatic power supply and power failure of the power utilization module are achieved.

The utility model has the advantages that: the circuit board is automatically powered after underwater instrument equipment enters water only through the characteristics of seawater without additional materials and elements. Through the special design to power supply circuit, avoided underwater instrument and equipment not before the consumption of work battery power, guaranteed that there is sufficient electric quantity to accomplish required measurement work in the instrument and equipment use, simple structure, stable performance. The circuit is simple and convenient to test.

Drawings

FIG. 1 is an overall block diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of power management of an embodiment of the present invention;

FIG. 3 is a schematic diagram of a relay pin in an embodiment of the present invention;

fig. 4 is a schematic diagram of a power protection circuit according to an embodiment of the present invention.

In the figure: 1. a circuit board; 2. the power line a is connected with the shell; 3. the ground wire of the circuit board is connected with the shell; 4. the power line b is connected with the shell; 5. a relay pull-in control line; 6. a housing; 7. a signal acquisition module; 11. a power management module; 12. a relay; 13. a power supply line a; 14. a power supply line b; 15. a power supply line c; 16. a power supply line d; 17. a triode; 18. a battery pack; 19. a circuit board ground wire; 20/27, relay control pin; 21/26, moving contact of relay; 22/25, normally closed contacts of the relay; 23/24, normally open contacts of the relay; 28. a resistance-capacitance circuit; 29/30 sea water ground contact.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment provides a jettisonable flow measurement probe, as shown in fig. 1, which comprises a housing 6, a circuit board 1 and a relay suction control line 5, wherein the circuit board 1 and the relay suction control line are arranged in the housing 6. The circuit board 1 comprises a power management module 11 and a signal acquisition module 7. In order to avoid power loss of the battery pack before power supply, a resistance-capacitance circuit 28 is connected to the power supply circuit.

As shown in fig. 2 and 3, the power management module 11 includes a relay 12, a battery pack 18, and a circuit board ground 19. The relay 12 is a double pole double throw relay. Power cord a13, power cord b14, power cord c15, power cord d16, battery pack 18, and circuit board ground 19. One end of a power line a13 and one end of a power line b14 are respectively connected with the two normally closed

contacts

22 and 25 of the relay 12, and the other ends are embedded on the shell 6 and are connected with the connection points 2 and 4 on the shell 6; one end of a power line c15 and one end of a power line d16 are respectively connected with the two normally

open contacts

23 and 24 of the relay 12, and the other ends are respectively connected with the anode and the cathode of the battery pack 18; the pull-in control pin of the relay 12 is connected with the relay pull-in control line 5 through the triode 17. Two

movable contacts

21 and 26 of the relay 12 are respectively connected with the positive electrode and the negative electrode of the signal acquisition module 7.

As shown in fig. 4, the rc circuit 28 is composed of a capacitor and a resistor connected in series. The resistor-capacitor circuit 28 is connected to the

movable contacts

21, 26 of the relay 12 by wires. Two

seawater ground contacts

29, 30 are led out of the resistance-capacitance circuit 28 and pass through the through holes on the probe shell 6.

The relay suction control line 5 led out from the circuit board 1, the

connection points

2, 3 and 4 on the shell 6 and the

seawater ground contacts

29 and 30 embed the wire joints into the via holes of the shell 6 and compress tightly through later-stage packaging, so that seawater is prevented from leaking into the probe.

Before the probe enters water, no current passes through the control pin in the triode 17 at the moment, the control pin is at a low level, the

control pins

20 and 27 of the relay 12 do not form a loop, and the relay is not attracted. The

movable contacts

21 and 26 are connected with the normally closed

contacts

22 and 25, the power supply positive and negative poles of the signal acquisition module 7 are connected with the power line a13 and the power line b14, the power line a13 and the power line b14 are connected with the connection points 2 and 4 of the shell 6, the power supply circuit is not on, the circuit board 1 is not powered, and the probe does not work. At this time, the

seawater ground contacts

29 and 30 left in the probe do not contact the seawater and are not conducted, and the resistance-capacitance circuit 28 avoids the conduction of a power supply circuit and the consumption of the electric quantity of a battery caused by the mistaken touch through the blocking characteristic of a capacitor, so that the electric quantity of the battery pack 18 in the probe is kept.

When the probe enters seawater, a large amount of free positive and negative ions in the seawater are attached to the relay attraction control line 5 to form current excitation, at the moment, the triode 17 control pin is at a high level, the triode is conducted, so that the level of the control pin 27 of the relay 12 is pulled down to form a loop with the other control pin 20 of the relay 12 to control the attraction of the armature of the relay, and the

movable contacts

21 and 26 of the relay 12 are respectively connected with the normally

open contacts

23 and 24. The positive and negative poles of the signal acquisition module 7 are connected with the power line c15 and the power line d16, at this time, the power supply circuit is switched on, and the battery pack 18 provides the circuit with a direct current voltage of +/-12V for power supply.

When the probe enters water, the battery pack 18 starts to supply power, the

seawater ground contacts

29 and 30 positioned at different positions of the probe are conducted, the voltages of the points, connected with the

movable contacts

21 and 26 of the relay 12, in the resistance-capacitance circuit 28 are respectively straightened to be +12V and-12V of the circuit, at the moment, the resistance-capacitance circuit 18 is changed into a filter capacitor of the power supply to be used, more stable power supply voltage with smaller noise is provided for each module chip in the acquisition circuit, and the noise superposition of front-end tiny signals is reduced as much as possible.

In the present embodiment, the relay 12 is a magnetic latching relay. Because the switching state of the magnetic latching relay is triggered by a pulse electric signal with a certain width, but the current in the seawater is weak, a triode is connected in series at the control end to amplify the current to achieve the state of keeping the permanent magnetic steel, and once the switching state is completed, the movable contact of the relay can still keep the previous state after the coil is powered off.

By adopting the expendable flow measurement probe, the circuit can be automatically started without the excitation of signals of an upper computer and additional devices, the work is started, the design difficulty of the probe is simplified, and the data transmission difficulty in the later period is reduced. Meanwhile, the mode can provide stable voltage required by the probe circuit board, and the probe circuit works reliably. Through the resistance-capacitance circuit, unnecessary loss caused by the electric quantity of the battery of the probe before the probe is used in water is prevented, and the electric quantity requirement of the probe in the measuring process is ensured.

In addition, the power management module, the control circuit and the principle thereof adopted in the embodiment are not limited to the application in the jettison type flow measurement probe, and the automatic power-on control of other underwater instrument devices is also applicable.

Claims

1. The utility model provides an underwater from last electric power management device which characterized in that: the power supply management module is arranged in the shell, and the control lead is connected with the power supply management module and is used for controlling the on-off of a circuit of the power supply management module; the control lead penetrates out of the shell and is directly contacted with seawater; the power management module is connected with the power utilization module through a power line and controls the on-off of the power supply circuit.

2. The underwater self-powered power management device of claim 1, wherein: the power management module comprises a relay and a battery module; the control lead is connected with a control pin of the relay; the positive electrode and the negative electrode of the battery module are connected with the normally open contact of the relay through two power lines; the movable contact of the relay is connected with the positive electrode and the negative electrode of the electricity utilization module through two power lines; the normally closed contact of the relay is connected with the seawater ground through two power lines.

3. The underwater self-powered power management device of claim 2, wherein: the power management module further comprises a resistance-capacitance circuit, and the resistance-capacitance circuit is connected in a circuit between the battery module and the power utilization module.

4. The underwater self-powered power management device of claim 3, wherein: the resistance-capacitance circuit is connected with the movable contact of the relay, two contacts are led out of the resistance-capacitance circuit, and the contacts are connected with a seawater ground.

5. The underwater self-powered power management device of claim 2, wherein: and a triode is connected in series between the relay and the control lead.

6. An underwater self-powered power management apparatus as claimed in any one of claims 2 to 5, wherein: the relay is a magnetic latching relay.

7. An underwater self-powered instrument comprising the underwater self-powered power management device of any one of claims 1-5 and a power-consuming module; the power utilization module is connected with a power management module of the underwater self-power-on power management device, and automatic power supply and power failure of the power utilization module are achieved.