Flood alarm circuits and electronic equipment

Abstract

The embodiment of the present application provides a water immersion alarm circuit and an electronic device, wherein the water immersion alarm circuit includes a power supply, a first probe, a second probe, a pull-down circuit, a trigger unit and an alarm unit, wherein: the positive pole of the power supply is connected to the first probe, the second probe, the pull-down circuit, the trigger unit and the alarm unit are connected in sequence, the pull-down circuit, the trigger unit and the alarm unit are connected to the negative pole of the power supply, the first probe and the second probe have the same orientation, and the first probe and the second probe are both made of conductive materials; when the first probe and the second probe touch the conductive liquid, the first probe and the second probe are electrically connected, and the power supply inputs a high level to the trigger unit through the first probe and the second probe to trigger the alarm unit to alarm. The power consumption of the water immersion alarm circuit is reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic devices, and in particular to a water immersion alarm circuit and electronic equipment. Background Art

[0002] As the communication room becomes unmanned, remote monitoring of the communication room by staff is particularly important. For example, staff need to monitor whether there is water in the communication room.

[0003] At present, the staff can determine whether the communication room has water ingress according to the water immersion alarm in the communication room. For example, if the water immersion alarm sounds, it is determined that the communication room has water ingress. However, the water immersion alarm in the prior art needs to use a microprocessor to determine whether there is a conductive liquid in the surrounding environment of the water immersion alarm. When the working state of the water immersion alarm is the standby state, the microprocessor must remain in the working state, which leads to a large power consumption of the water immersion alarm. Summary of the invention

[0004] The embodiments of the present application provide a water immersion alarm circuit and an electronic device, which are used to solve the technical problem of high power consumption of the water immersion alarm in the standby state in the above-mentioned background technology.

[0005] In a first aspect, an embodiment of the present application provides a water immersion alarm circuit, the water immersion alarm circuit comprising a power supply, a first probe, a second probe, a pull-down circuit, a trigger unit and an alarm unit, wherein:

[0006] The positive pole of the power supply is connected to the first probe, the second probe, the pull-down circuit, the trigger unit and the alarm unit are connected in sequence, the pull-down circuit, the trigger unit and the alarm unit are connected to the negative pole of the power supply, the first probe and the second probe have the same orientation, and the first probe and the second probe are both made of conductive materials;

[0007] When the first probe and the second probe touch the conductive liquid, the first probe and the second probe are electrically connected, and the power supply inputs a high level to the trigger unit through the first probe and the second probe to trigger the alarm unit to alarm.

[0008] In a possible implementation, the trigger unit includes a control unit and a pulse unit, wherein:

[0009] The control unit is connected to the pulse unit, and the pulse unit is connected to the alarm unit;

[0010] The control unit is used to control the pulse unit to be turned on or off;

[0011] The pulse unit is used to generate a pulse signal and send the pulse signal to the alarm unit, so that the alarm unit generates alarm information.

[0012] In a possible implementation, the control unit includes a first NAND gate and a second NAND gate, wherein:

[0013] The input end of the first NAND gate is connected to the second probe, and the output end of the first NAND gate is connected to the input end of the second NAND gate.

[0014] In a possible implementation manner, the first NAND gate and the second NAND gate have two input terminals; the number of the second probes is 2, wherein:

[0015] A second probe is connected to the first input terminal of the first NAND gate, and another second probe is connected to the second input terminal of the first NAND gate.

[0016] In a possible implementation, the pull-down circuit includes a first pull-down resistor and a second pull-down resistor, wherein:

[0017] The first pull-down resistor is arranged between the first input terminal and the negative electrode of the power supply, and the second pull-down resistor is arranged between the second input terminal and the negative electrode of the power supply.

[0018] In a possible implementation, the pull-down circuit includes a first capacitor and a second capacitor, wherein:

[0019] The first capacitor is connected to the first pull-down resistor, and the second capacitor is connected to the second pull-down resistor.

[0020] In a possible implementation manner, a first protection resistor is included between the first probe and the power supply, and a second protection resistor is included between the second probe and the trigger unit.

[0021] In a possible implementation manner, the pulse unit includes a third NAND gate and a fourth NAND gate, wherein:

[0022] The output end of the second NAND gate is connected to the input end of the third NAND gate, the output end of the third NAND gate is connected to the input end of the fourth NAND gate, and the output end of the fourth NAND gate is connected to the alarm unit.

[0023] In a possible implementation manner, the third NAND gate and the fourth NAND gate include two input terminals; the pulse unit includes a first resistor and a third capacitor, wherein:

[0024] The output end of the second NAND gate is connected to the third input end of the third NAND gate, the output end of the third NAND gate is respectively connected to one end of the first resistor and the input end of the fourth NAND gate, the other end of the first resistor is connected to the fourth input end of the third NAND gate, one end of the third capacitor is connected to the other end of the first resistor, and the other end of the third capacitor is connected to the negative electrode of the power supply.

[0025] In a possible implementation, the alarm unit includes an electronic switch and a response unit, wherein:

[0026] The trigger unit is connected to the electronic switch, and the electronic switch is connected to the response unit;

[0027] The electronic switch is used to execute the signal output by the trigger unit and control the response unit to generate alarm information.

[0028] In a possible implementation, the response unit includes a sound unit and a flash unit, wherein:

[0029] The electronic switch is connected to the sound unit and / or the flash unit;

[0030] When the electronic switch is connected to the sound unit, the alarm information is an acoustic signal, and when the electronic switch is connected to the flash unit, the alarm information is an optical signal.

[0031] In a possible implementation, the response unit includes a wireless unit and a communication unit, wherein:

[0032] The electronic switch is connected to the wireless unit, and the wireless unit is connected to the communication unit;

[0033] The wireless unit is used to generate a wireless signal from the electronic switch signal. When the communication unit receives the wireless signal, the communication unit sends an alarm message to a preset number.

[0034] In a second aspect, an embodiment of the present application provides an electronic device, wherein the electronic device includes the water immersion alarm circuit described in the first aspect.

[0035] The embodiment of the present application provides a water immersion alarm circuit and an electronic device, wherein the water immersion alarm circuit includes a power supply, a first probe, a second probe, a pull-down circuit, a trigger unit and an alarm unit, wherein the power supply is connected to the first probe, the second probe, the pull-down circuit, the trigger unit and the alarm unit are connected in sequence, the first probe and the second probe have the same orientation, and the first probe and the second probe are both made of conductive materials. When the first probe and the second probe touch the conductive liquid, the first probe and the second probe are connected, and the power supply inputs a high level to the trigger unit through the first probe and the second probe to trigger the alarm unit to alarm. According to the above principle, when the first probe and the second probe touch the conductive liquid, the first probe and the second probe are connected, and the power supply can input a high level to the trigger unit through the first probe and the second probe to trigger the alarm unit to alarm. When the first probe and the second probe do not touch the liquid, since the pull-down circuit is arranged between the second probe and the trigger unit, the input end of the trigger unit is always at a low level, thereby reducing the power consumption of the water immersion alarm circuit when the water immersion alarm circuit is in a standby state. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the structure of a water immersion alarm circuit provided in an embodiment of the present application;

[0037] Figure 2 A schematic diagram of the structure of a trigger unit provided in an embodiment of the present application;

[0038] Figure 3 A schematic diagram of the structure of a control unit provided in an embodiment of the present application;

[0039] Figure 4 A schematic diagram of the structure of another water immersion alarm circuit provided in an embodiment of the present application;

[0040] Figure 5 A schematic diagram of the structure of a pulse unit provided in an embodiment of the present application;

[0041] Figure 6 A schematic diagram of the structure of an alarm unit provided in an embodiment of the present application;

[0042] Figure 7 A schematic diagram of the structure of an electronic switch provided in an embodiment of the present application;

[0043] Fig. 8A A schematic diagram of the structure of a response unit provided in an embodiment of the present application;

[0044] Figure 8B A schematic diagram of the structure of another response unit provided in an embodiment of the present application;

[0045] Fig. 9A A schematic diagram of the structure of a wireless unit provided in an embodiment of the present application;

[0046] Fig. 9B A schematic diagram of the structure of a communication unit provided in an embodiment of the present application;

[0047] Fig.10 A schematic diagram of the structure of another water immersion alarm circuit provided in an embodiment of the present application.

[0048] Reference numerals:

[0049] 11: Power supply;

[0050] 12: First probe;

[0051] 13: Second probe;

[0052] 14: Pull-down circuit;

[0053] 15: trigger unit;

[0054] 16: Alarm unit;

[0055] 21: control unit;

[0056] 22: Pulse unit;

[0057] 31: First NAND gate;

[0058] 32: The second NAND gate;

[0059] 41: first pull-down resistor;

[0060] 42: second pull-down resistor;

[0061] 43: first capacitor;

[0062] 44: second capacitor;

[0063] 51: The third NAND gate;

[0064] 52: the fourth NAND gate;

[0065] 53: first resistor;

[0066] 54: the third capacitor;

[0067] 61: Electronic switch;

[0068] 62: Response unit;

[0069] 71: Flash unit;

[0070] 72: sound unit;

[0071] 73: wireless unit;

[0072] 74: Communication unit. DETAILED DESCRIPTION

[0073] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their detailed description will be omitted.

[0074] Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of the illustration to another component, these terms are used in this specification only for convenience, such as according to the orientation of the examples described in the drawings. It is understood that if the device of the illustration is turned upside down, the component described as "upper" will become the component "lower". When a structure is "on" other structures, it may mean that the structure is formed integrally on the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

[0075] The terms "a", "an", "the" and "said" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to indicate an open-ended inclusive meaning and mean that there may be additional elements / components / etc. in addition to the listed elements / components / etc. The terms "first" and "second" are used only as labels and are not intended to limit the quantity of their objects.

[0076] In the related art, the staff can determine whether the communication room has water ingress according to the water immersion alarm in the communication room. However, the water immersion alarm in the prior art is internally provided with a microprocessor for judging whether there is liquid in the surrounding environment. When the water immersion alarm detects whether there is water ingress in the room, the microprocessor must remain in working state (even if there is no water in the communication room, the microprocessor still needs to work), which results in a large power consumption of the water immersion alarm.

[0077] In order to solve the technical problem of high power consumption of water immersion alarm in related technologies, the embodiment of the present application provides a water immersion alarm circuit, which includes a power supply, a first probe, a second probe, a pull-down circuit, a trigger unit and an alarm unit, wherein the power supply is connected to the first probe, the second probe, the pull-down circuit, the trigger unit and the alarm unit are connected in sequence, the first probe and the second probe have the same orientation, and the first probe and the second probe are both made of conductive materials. Multiple second probes can be set to improve the accuracy of the water immersion alarm circuit alarm, and when the first probe and the second probe do not touch the liquid, the pull-down circuit can be used to make the input end of the trigger unit always low level, thereby making the water immersion alarm circuit in a non-working state, reducing the power consumption of the water immersion alarm circuit.

[0078] The technical solution shown in the present application is described in detail below through specific embodiments. It should be noted that the following specific embodiments can be combined with each other, and the same or similar contents will not be repeatedly described in different embodiments.

[0079] Figure 1 This is a schematic diagram of a water immersion alarm circuit provided in an embodiment of the present application. Figure 1 The water immersion alarm circuit includes a power supply 11, a first probe 12, a second probe 13, a pull-down circuit 14, a trigger unit 15 and an alarm unit 16, wherein the positive pole of the power supply 11 is connected to the first probe 12, the second probe 13, the pull-down circuit 14, the trigger unit 15 and the alarm unit 16 are connected in sequence, and the pull-down circuit, the trigger unit and the alarm unit are connected to the negative pole of the power supply.

[0080] Among them, the water immersion alarm circuit is used to detect whether there is conductive liquid in the surrounding environment. For example, the water immersion alarm circuit can be used for monitoring and alarming water leakage in heating networks, tap water, ships, houses, etc.

[0081] The power supply 11 is used to provide an input signal for the water immersion alarm circuit. For example, when the first probe 12 and the second probe 13 are connected by a conductive liquid, the power supply 11 can input a high level to the trigger unit 15 to trigger the alarm unit 16 to alarm. Optionally, the power supply 11 can be connected to the trigger unit 15 to provide the power supply 11 to the trigger unit 15. For example, the power supply 11 can be connected to the trigger unit 15 to provide the power supply 11 to the trigger unit 15, but since the input end of the trigger unit 15 is at a low level, the water immersion alarm circuit is in a non-operating state, even if the power supply 11 is connected to the trigger unit 15, the power consumption of the trigger unit 15 can be ignored.

[0082] The first probe 12 and the second probe 13 are oriented in the same direction. For example, the first probe 12 and the second probe 13 may both be oriented toward the ground, and when there is conductive liquid on the ground, the first probe 12 and the second probe 13 may be connected through the conductive liquid. Optionally, the length of the first probe 12 is greater than the length of the second probe 13. For example, when the first probe 12 and the second probe 13 are both oriented toward the ground, the first probe 12 may be in contact with the ground, and the second probe 13 may be 0.1 mm above the ground, which may improve the accuracy of the water immersion alarm circuit detection.

[0083] The first probe 12 and the second probe 13 are both made of conductive materials. For example, the materials of the first probe 12 and the second probe 13 can be conductive metal or non-metal. Optionally, the materials of the first probe 12 and the second probe 13 can be corrosion-resistant conductive materials. For example, since the first probe 12 and the second probe 13 need to detect whether there is conductive liquid in the surrounding environment, the materials of the first probe 12 and the second probe 13 can be corrosion-resistant conductive materials, thereby increasing the service life of the water immersion alarm circuit.

[0084] The pull-down circuit 14 is used to maintain the signal at the input end of the trigger unit 15. For example, when the first probe 12 and the second probe 13 do not touch the liquid, the power supply 11 will not provide a high-level signal to the trigger unit 15, and because the pull-down circuit 14 is connected to the input end of the trigger unit 15, the pull-down circuit 14 can make the input end of the trigger unit 15 be a low level.

[0085] The trigger unit 15 is used to control the water flood alarm circuit to be turned on or off. For example, when the input end of the trigger unit 15 is at a low level, the trigger unit 15 turns off the water flood alarm circuit, and the water flood alarm circuit will not send out an alarm message; when the input end of the trigger unit 15 is at a high level, the trigger unit 15 turns on the water flood alarm circuit, and the water flood alarm circuit can send out an alarm message.

[0086] The alarm unit 16 is used to generate alarm information. For example, when the flood alarm circuit detects that water has entered the communication room, the alarm unit 16 can generate an acoustic signal, an optical signal, a wireless signal, etc. to remind the staff that water has entered the communication room.

[0087] In the present application, the state of the water flood alarm circuit can be a circuit closed state or a circuit open state. When the state of the water flood alarm circuit is the circuit closed state, the water flood alarm circuit will not generate an alarm message. When the state of the water flood alarm circuit is the circuit open state, the water flood alarm circuit can generate an alarm message.

[0088] Next, the working process of the water immersion alarm circuit is described.

[0089] When the first probe 12 and the second probe 13 do not touch the conductive liquid, the power supply 11 cannot input a high-level signal to the input end of the trigger unit 15 through the first probe 12 and the second probe 13, and the pull-down circuit 14 can make the input end of the trigger unit 15 a stable low-level signal. When the input end of the trigger unit 15 is a low-level signal, the water immersion alarm circuit will not issue an alarm message. At this time, the state of the water immersion alarm circuit is a circuit-off state, thereby reducing the power consumption of the water immersion alarm circuit.

[0090] When the first probe 12 and the second probe 13 come into contact with the conductive liquid, since the first probe 12 and the second probe 13 are both made of conductive materials, the first probe 12 and the second probe 13 are connected. At this time, the power supply 11 can input a high-level signal to the trigger unit 15 through the first probe 12 and the second probe 13. When the input end of the trigger unit 15 is a high-level signal, the water immersion alarm circuit can send out an alarm message. At this time, the state of the water immersion alarm circuit is a circuit-open state, thereby improving the accuracy of the water immersion alarm circuit alarm.

[0091] Optionally, a first protective resistor is included between the first probe 12 and the power supply 11 , and a second protective resistor is included between the second probe 13 and the trigger unit 15 .

[0092] The embodiment of the present application provides a water immersion alarm circuit, which includes a power supply, a first probe, a second probe, a pull-down circuit, a trigger unit and an alarm unit, wherein the power supply is connected to the first probe, the second probe, the pull-down circuit, the trigger unit and the alarm unit are connected in sequence, the first probe and the second probe have the same orientation, and the first probe and the second probe are both made of conductive materials. When the first probe and the second probe touch the conductive liquid, the first probe and the second probe are connected, and the power supply inputs a high level to the trigger unit through the first probe and the second probe to trigger the alarm unit to alarm. According to the above principle, when the first probe and the second probe do not touch the liquid, the power supply cannot send a high level signal to the input end of the trigger unit, and because the pull-down circuit is arranged between the second probe and the trigger unit, the input end of the trigger unit is always a low level signal, thereby making the water immersion alarm circuit in a non-working state, which can reduce the power consumption of the water immersion alarm circuit.

[0093] exist Figure 1 Based on the embodiment shown, the following Figure 2 , the structure of the above trigger unit is described in detail.

[0094] Figure 2 This is a schematic diagram of the structure of the trigger unit provided in the embodiment of the present application. Figure 2 The trigger unit 15 includes a control unit 21 and a pulse unit 22 , wherein the control unit 21 and the pulse unit 22 are connected, and the pulse unit 22 and the alarm unit 16 are connected.

[0095] The control unit 21 is used to control the pulse unit 22 to turn on or off. For example, when the input terminal of the control unit 21 is at a low level, the pulse unit 22 is turned off, and when the input terminal of the control unit 21 is at a high level, the pulse unit 22 is turned on.

[0096] The pulse unit 22 is used to generate a pulse signal and send the pulse signal to the alarm unit 16, so that the alarm unit 16 generates an alarm message. For example, when the pulse unit 22 is turned on, the pulse unit 22 can send a periodic pulse signal to the alarm unit 16, so that the alarm unit 16 can generate an alarm message to remind the staff that the communication room is flooded.

[0097] Next, combine Figure 3 , detailing the structure of the control unit.

[0098] Figure 3 This is a schematic diagram of the structure of the control unit provided in the embodiment of the present application. Figure 3 The control unit 21 includes a first NAND gate 31 and a second NAND gate 32, wherein the input end of the first NAND gate 31 is connected to the second probe 13, the output end of the first NAND gate 31 is connected to the input end of the second NAND gate 32, and the output end of the second NAND gate 32 is connected to the input end of the pulse unit 22.

[0099] The impedance of the input end of the first NAND gate 31 is greater than the impedance of the output end of the first NAND gate 31. For example, the impedance of the input end of the first NAND gate 31 may be 10 kilo-ohms, and the impedance of the output end of the first NAND gate 31 may be 10 ohms. The impedance of the input end of the second NAND gate 32 is greater than the impedance of the output end of the second NAND gate 32. For example, the impedance of the input end of the second NAND gate 32 may be 5 kilo-ohms, and the impedance of the output end of the second NAND gate 32 may be 20 ohms.

[0100] The signals at the input terminals and the signals at the output terminals of the first NAND gate 31 and the second NAND gate 32 are opposite. For example, if the input terminal of the first NAND gate 31 is at a low level, the output terminal of the first NAND gate 31 outputs a high level, and if the input terminal of the first NAND gate 31 is at a high level, the output terminal of the first NAND gate 31 outputs a low level.

[0101] Optionally, the input terminal signal and the output terminal signal of the control unit 21 are the same. For example, if the input terminal of the first NAND gate 31 is at a low level, the output terminal of the first NAND gate 31 outputs a high level, the output terminal of the first NAND gate 31 inputs a high level to the input terminal of the second NAND gate 32, and the output terminal of the second NAND gate 32 outputs a low level, which is the same as the signal input to the input terminal of the first NAND gate 31.

[0102] Optionally, the first NAND gate 31 and the second NAND gate 32 may have two input terminals and one output terminal. For example, the input terminal of the first NAND gate 31 may include two input terminals, and the output terminal of the first NAND gate 31 may be one output terminal; the input terminal of the second NAND gate 32 may include two input terminals, and the output terminal of the second NAND gate 32 may be one output terminal.

[0103] Optionally, when the input end of the first NAND gate 31 includes the first input end and the second input end, the number of the second probes 13 can be two. Among them, one second probe 13 can be connected to the first input end of the first NAND gate 31, and another second probe 13 can be connected to the second input end of the first NAND gate 31. For example, when the input end of the first NAND gate 31 includes the first input end and the second input end, the two second probes 13 can be connected to the first input end and the second input end respectively, which can improve the accuracy of the alarm of the water immersion alarm circuit.

[0104] Optionally, when the input terminal of the first NAND gate 31 includes the first input terminal and the second input terminal, if a low level is input to any one of the input terminals, the output terminal of the first NAND gate 31 outputs a high level. For example, if the input to the first input terminal of the first NAND gate 31 is a low level and the input to the second input terminal is a high level, or the input to the first input terminal of the first NAND gate 31 is a high level and the input to the second input terminal is a low level, the output terminal of the first NAND gate 31 outputs a high level.

[0105] Optionally, if the input at the first input terminal of the first NAND gate 31 is a high level and the input at the second input terminal is a high level, the output of the first NAND gate 31 is a low level.

[0106] Optionally, when the number of the second probes 13 is two, the pull-down circuit 14 may include a first pull-down resistor and a second pull-down resistor. The first pull-down resistor is arranged between one second probe 13 and the first input terminal, and the second pull-down resistor is arranged between another second probe 13 and the second input terminal. For example, the first pull-down resistor can make the first input terminal of the first NAND gate 31 be low level, and the second pull-down resistor can make the second input terminal of the first NAND gate 31 be low level.

[0107] Optionally, the pull-down circuit 14 may further include a first capacitor and a second capacitor. The first capacitor is connected to the first pull-down resistor, and the second capacitor is connected to the second pull-down resistor. Optionally, the first capacitor and the second capacitor are used for anti-interference. For example, when the state of the water immersion alarm circuit is the circuit closed state, if the medium in the air affects the signal at the input end of the trigger circuit, the first capacitor and the second capacitor can block the interference signal and improve the stability of the water immersion alarm circuit.

[0108] Based on any of the above embodiments, Figure 4 , further details the structure of the water immersion alarm circuit.

[0109] Figure 4 This is a schematic diagram of another water immersion alarm circuit provided by an embodiment of the present application. Figure 4The water immersion alarm circuit includes a power supply 11, a first probe 12, two second probes 13, a pull-down circuit 14, a control unit 21, a pulse unit 22 and an alarm unit 16. The positive pole of the power supply 11 is connected to the first probe 12, the pull-down circuit, the trigger unit and the alarm unit are connected to the negative pole of the power supply, the control unit 21 includes a first NAND gate 31 and a second NAND gate 32, the first NAND gate 31 includes a first input terminal, a second input terminal and an output terminal, and the second NAND gate 32 includes two input terminals and an output terminal. The pull-down circuit 14 includes a first pull-down resistor 41, a second pull-down resistor 42, a first capacitor 43 and a second capacitor 44. Figure 4 The grounding mark of the middle pull-down circuit is actually connected to the negative pole of the power source 11 .

[0110] A second probe 13 is connected to the first input terminal of the first NAND gate 31, another second probe 13 is connected to the second input terminal of the first NAND gate 31, a first pull-down resistor 41 is arranged between the first input terminal and the negative electrode of the power supply, and a second pull-down resistor 42 is arranged between the second input terminal and the negative electrode of the power supply. A first capacitor 43 is connected to the first pull-down resistor 41, and a second capacitor 44 is connected to the second pull-down resistor 42. The output terminal of the first NAND gate 31 is connected to the input terminal of the second NAND gate 32. The output terminal of the second NAND gate 32 is connected to the pulse unit 22, and the pulse unit 22 is connected to the alarm unit 16.

[0111] Optionally, when the first probe 12 and the two second probes 13 touch the conductive liquid at the same time, the power supply 11 can input a high level to the first input terminal and the second input terminal of the first NAND gate 31 through the first probe 12 and the two second probes 13 to trigger the alarm unit 16 to alarm. For example, since the first NAND gate 31 includes a first input terminal and a second input terminal, if the first input terminal is at a low level and the second input terminal is at a high level, or the first input terminal is at a high level and the second input terminal is at a low level, the first NAND gate 31 always inputs a high level to the input terminal of the second NAND gate 32, and the water immersion alarm circuit is closed. Therefore, only when the first probe 12 and the two second probes 13 touch the conductive liquid at the same time, the first input terminal and the second input terminal of the first NAND gate 31 are both at a high level, which will trigger the alarm unit 16 to alarm, thereby improving the accuracy of the alarm of the water immersion alarm circuit.

[0112] In actual application, when the first probe and the two second probes touch the conductive liquid at the same time, the first probe and the two second probes are connected, and the power supply can input a high level to the first input terminal and the second input terminal of the first NAND gate through the first probe and the two second probes, so that the first NAND gate inputs a low level to the input terminal of the second NAND gate. The second NAND gate outputs a high level to the pulse unit, so that the pulse unit is turned on, and then the alarm unit is controlled to generate an alarm message. When the first probe and one of the second probes touch the conductive liquid, since the other second probe does not touch the conductive liquid, the state of the water immersion alarm circuit is always in the circuit closed state, which can improve the accuracy of the water immersion alarm circuit alarm, and when there is no conductive liquid in the environment around the water immersion alarm circuit, the state of the water immersion alarm circuit is in the circuit closed state, which reduces the power consumption of the water immersion alarm circuit.

[0113] Based on any of the above embodiments, Figure 5 , the structure of the pulse unit is described in detail.

[0114] Figure 5 This is a schematic diagram of the structure of the pulse unit provided in the embodiment of the present application. Figure 5 The pulse unit 22 includes a third NAND gate 51, a fourth NAND gate 52, a first resistor 53 and a third capacitor 54. The output end of the second NAND gate 32 is connected to the input end of the third NAND gate 51, the output end of the third NAND gate 51 is connected to the input end of the fourth NAND gate 52, and the output end of the fourth NAND gate 52 is connected to the alarm unit 16. The third NAND gate 51 includes a third input end, a fourth input end and an output end, and the fourth NAND gate 52 includes two input ends and an output end.

[0115] The output end of the second NAND gate 32 is connected to the third input end of the third NAND gate 51, the output end of the third NAND gate 51 is respectively connected to one end of the first resistor 53 and the input end of the fourth NAND gate 52, the other end of the first resistor 53 is connected to the fourth input end of the third NAND gate 51, one end of the third capacitor 54 is connected to the other end of the first resistor 53, and the other end of the third capacitor is connected to the negative electrode of the power supply ( Figure 5 The ground mark connected to the other end of the third capacitor is actually the negative pole of the power supply).

[0116] Optionally, when the input terminal of the third NAND gate 51 includes the third input terminal and the fourth input terminal, if a low level is input to any one of the input terminals, the output terminal of the third NAND gate 51 outputs a high level. For example, if the input to the third input terminal of the third NAND gate 51 is a low level and the input to the fourth input terminal is a high level, or the input to the third input terminal of the third NAND gate 51 is a high level and the input to the fourth input terminal is a low level, the output terminal of the third NAND gate 51 outputs a high level.

[0117] Optionally, if the third input terminal of the third NAND gate 51 is input at a high level and the fourth input terminal is input at a high level, the output of the third NAND gate 51 is a low level.

[0118] In actual application, when the output of the second NAND gate 32 is a low level, the third input terminal of the third NAND gate 51 is a low level. Regardless of whether the fourth input terminal of the third NAND gate 51 is a high level or a low level, the output terminal of the third NAND gate 51 is a high level. At this time, the third NAND gate 51 can input a high level to the fourth NAND gate 52, and the fourth NAND gate 52 outputs a low level to the alarm unit 16, and the alarm unit 16 is turned off. At the same time, the third NAND gate 51 can charge the third capacitor 54 through the first resistor 53.

[0119] When the output of the second NAND gate 32 is high, the third input terminal of the third NAND gate 51 is high, but since the fourth input terminal of the third NAND gate 51 is low, the output of the third NAND gate 51 is high, and the third capacitor 54 is charged through the first resistor 53. When the third capacitor 54 is fully charged, the third capacitor 54 can input a high level to the fourth input terminal of the third NAND gate 51, and since the third input terminal and the fourth input terminal of the third NAND gate 51 are both high, the third NAND gate 51 will output a low level. According to the above principle, when the second NAND gate 32 inputs a high level to the third input terminal of the third NAND gate 51, the third NAND gate 51 can periodically input a high level and a low level to the fourth NAND gate 52. When the fourth NAND gate 52 outputs a high level, the alarm unit 16 generates alarm information. When the fourth NAND gate 52 outputs a low level, the alarm unit 16 stops generating alarm information. In this way, when the water immersion alarm circuit alarms, the alarm unit 16 can periodically generate alarm information, thereby reducing the power consumption of the water immersion alarm circuit.

[0120] Based on any of the above embodiments, Figure 6 , the structure of the above alarm unit is described in detail.

[0121] Figure 6 This is a schematic diagram of the structure of an alarm unit provided in an embodiment of the present application. Figure 6, the alarm unit 16 includes an electronic switch 61 and a response unit 62. The trigger unit 15 is connected to the electronic switch 61. For example, the output end of the fourth NAND gate 52 of the trigger unit 15 can be connected to the input end of the electronic switch 61. The electronic switch 61 is connected to the response unit 62. For example, the output end of the amplifier unit can be connected to the input end of the response unit 62. The electronic switch 61 is used to amplify the signal output by the trigger unit 15 and control the response unit 62 to generate alarm information. For example, when the input end of the electronic switch 61 receives a high level output by the output end of the fourth NAND gate 52, the electronic switch 61 can amplify the high level signal and output the amplified high level signal to the response unit 62, thereby improving the effect of the alarm prompt.

[0122] Next, combine Figure 7 , the structure of the above-mentioned electronic switch is described in detail.

[0123] Figure 7 This is a schematic diagram of the structure of an electronic switch provided in an embodiment of the present application. Figure 7 The electronic switch includes two anti-interference resistors R, a switch Q1, a switch Q2, an interface N1, an interface N2 and an interface N3. The interface N1 can be connected to the output end of the fourth NAND gate, the interface N2 can be connected to the positive electrode of the power supply, and the interface N3 can be connected to the response unit.

[0124] In the process of the electronic switch 61 transmitting the signal to the response unit, the signal can be further amplified so that the power of the signal can drive the device of the response unit. Figure 8A-B , the structure of the above-mentioned response unit is described in detail.

[0125] Fig. 8A This is a schematic diagram of the structure of a response unit provided in an embodiment of the present application. Fig. 8A The response unit 62 includes a sound unit 72 and a flash unit 71 , wherein the electronic switch 61 and the flash unit 71 are connected.

[0126] When the electronic switch 61 is connected to the flash unit 71, the alarm information is a light signal. For example, when the electronic switch 61 is connected to the flash unit 71, if the water alarm circuit alarms, the response unit 62 can emit a flashing warning light. Optionally, when the electronic switch 61 is connected to the sound unit 72, the alarm information is a sound signal. For example, when the electronic switch 61 is connected to the sound unit 72, if the water alarm circuit alarms, the response unit 62 can emit a buzzing prompt sound. Optionally, when the electronic switch 61 is connected to the sound unit 72 and the flash unit 71 at the same time, the alarm information includes a sound signal and a light signal. For example, when the electronic switch 61 is connected to the sound unit 72 and the flash unit 71 at the same time, if the water alarm circuit alarms, the response unit 62 can emit a buzzing prompt sound and generate a flashing warning light.

[0127] Figure 8B This is a schematic diagram of another response unit provided in an embodiment of the present application. Figure 8B The response unit 62 includes a wireless unit 73 and a communication unit 74. The electronic switch 61 is connected to the wireless unit 73, and the wireless unit 73 is connected to the communication unit 74. The wireless unit 73 is used to generate a wireless signal from the signal transmitted by the electronic switch 61. When the communication unit 74 receives the wireless signal, the communication unit 74 sends an alarm message to a preset number.

[0128] Optionally, when the water immersion alarm circuit alarms, the wireless unit 73 can generate a wireless signal and send the wireless signal to the communication unit 74. When the communication unit 74 receives the wireless signal sent by the wireless unit 73, it can send an alarm message to a preset number to remind the staff that the water immersion alarm circuit alarms.

[0129] Optionally, the electronic switch 61 can be directly connected to the communication unit 74, so that the communication unit 74 sends an alarm message to a preset number. For example, the output end of the electronic switch 61 can be connected to the input end of the communication unit 74, and when the electronic switch 61 receives a high level signal, the communication unit 74 can send an alarm message to the preset number.

[0130] Optionally, when the electronic switch 61 is connected to the wireless unit 73, the wireless unit 73 may send a wireless signal to a wireless receiving device within a preset range. For example, when the electronic switch 61 is connected to the wireless unit 73, if the electronic switch 61 receives a high-level signal, the wireless unit 73 may send a wireless signal within a preset range, and all wireless receiving devices within the preset range may receive the wireless signal sent by the wireless unit 73, thereby determining that the water immersion alarm circuit has issued an alarm.

[0131] Next, combine Figure 9A-9B , the wireless unit and the communication unit are described in detail.

[0132] Fig. 9A This is a schematic diagram of the structure of a wireless unit provided in an embodiment of the present application. Fig. 9A , including a wireless unit. The wireless unit is an encoder, and the wireless unit includes an input end interface N4 and an output end interface N6.

[0133] See also Fig. 9A The output end of the electronic switch can be connected to the input end interface N4, and the electronic switch can send a signal to the wireless unit through the interface N4. When the wireless unit receives the signal sent by the electronic switch, it can encode the signal and send the wireless signal within a preset range.

[0134] Fig. 9B This is a schematic diagram of the structure of a communication unit provided in an embodiment of the present application. Fig. 9B , including a communication unit. The communication unit includes three interfaces. Among them, interface 2 is connected to the negative pole of the power supply (or interface 2 is grounded).

[0135] See also Fig. 9B , the electronic switch 61 can be Fig. 9A The N4 interface of the wireless unit shown is connected, and the N4 interface can be connected to the interface 1 of the communication unit. Fig. 9A The N5 interface of the wireless unit shown can be connected to the interface 3, so that when the electronic switch 61 sends a signal to the wireless unit, the wireless unit can encode the signal and send an alarm message to a preset mobile phone number.

[0136] Based on any of the above embodiments, Fig.10 , the water immersion alarm circuit shown in the embodiment of the present application is described in detail.

[0137] Fig.10 This is a schematic diagram of another water immersion alarm circuit provided by an embodiment of the present application. Fig.10The water immersion alarm circuit includes a power supply 11, a first probe 12, two second probes 13, a pull-down circuit, a control unit, a pulse unit and an alarm unit. The positive pole of the power supply 11 is connected to the first probe 12, the control unit includes a first NAND gate 31 and a second NAND gate 32, the first NAND gate 31 includes a first input terminal, a second input terminal and an output terminal, and the second NAND gate 32 includes two input terminals and an output terminal. The pull-down circuit 14 includes a first pull-down resistor 41, a second pull-down resistor 42, a first capacitor 43 and a second capacitor 44. The pulse unit includes a third NAND gate 51, a fourth NAND gate 52, a first resistor 53 and a third capacitor 54. The alarm unit 16 includes an electronic switch 61 and a response unit 62. The third NAND gate 51 includes a third input terminal, a fourth input terminal and an output terminal, the fourth NAND gate 52 includes two input terminals and an output terminal, the electronic switch 61 includes two anti-interference resistors R, a switch Q1, and a switch Q2, and the response unit 62 includes a flash unit 72 and a sound unit 71.

[0138] A second probe 13 is connected to the first input terminal of the first NAND gate 31, another second probe 13 is connected to the second input terminal of the first NAND gate 31, and the negative electrode of the power supply is connected to the other end of the third capacitor of the pull-down circuit and the electronic switch respectively ( Fig.10 The ground mark in the figure indicates that it is connected to the negative electrode of the power supply. The first pull-down resistor 41 is arranged between the first input terminal and the negative electrode of the power supply, and the second pull-down resistor 42 is arranged between the second input terminal and the negative electrode of the power supply. The first capacitor 43 is connected to the first pull-down resistor 41, and the second capacitor 44 is connected to the second pull-down resistor 42. The output end of the first NAND gate 31 is connected to the input end of the second NAND gate 32. The output end of the second NAND gate 32 is connected to the third input end of the third NAND gate, the output end of the third NAND gate 51 is connected to one end of the first resistor 53 and the input end of the fourth NAND gate 52 respectively, the other end of the first resistor 53 is connected to the fourth input end of the third NAND gate 51, and one end of the third capacitor 54 is connected to the other end of the first resistor 53. The output end of the fourth NAND gate is connected to the input end of the electronic switch, and the output end of the electronic switch is connected to the flash unit of the response unit.

[0139] Optionally, one end of the electronic switch can be connected to the positive terminal of the power supply ( Fig.10 The V+ in the middle is connected to the positive pole of the power supply), and the other end is connected to the negative pole of the power supply. One end of the response unit can be connected to the negative pole of the power supply ( Fig.10 The grounding mark in the figure indicates that it is connected to the negative pole of the power supply.)

[0140] Optionally, a protective resistor may be provided between the first probe and the power supply. A protective resistor may be provided between the second probe and the first NAND gate. A protective resistor may be provided between the fourth NAND gate and the electronic switch. A protective resistor may be provided between the electronic switch and the response unit.

[0141] Optionally, the first NAND gate, the second NAND gate, the third NAND gate and the fourth NAND gate may be integrated into a complementary metal oxide semiconductor (CMOS) chip, which may further reduce the power consumption of the water immersion alarm circuit.

[0142] In actual application, when the first probe and the two second probes touch the conductive liquid at the same time, the first probe and the two second probes are connected, and the power supply can input a high level to the first input terminal and the second input terminal of the first NAND gate through the first probe and the two second probes, so that the first NAND gate inputs a low level to the input terminal of the second NAND gate. The second NAND gate inputs a high level to the third input terminal of the third NAND gate, but since the fourth input terminal of the third NAND gate 51 is a low level, the output of the third NAND gate 51 is a high level, and the third capacitor 54 is charged through the first resistor 53. When the third capacitor 54 is fully charged, the third capacitor 54 can input a high level to the fourth input terminal of the third NAND gate 51, and since the third input terminal and the fourth input terminal of the third NAND gate 51 are both high levels, the third NAND gate 51 will output a low level at this time. In this way, the third NAND gate can periodically input a pulse signal to the fourth NAND gate. After the pulse signal is amplified by the signal amplification unit, the flash unit can periodically emit a light signal, saving the power consumption of the water immersion alarm circuit. At the same time, the alarm can be repeated to prevent missed alarms, thereby improving the accuracy and reliability of the water immersion alarm unit alarm. When there is no conductive liquid in the environment around the water immersion alarm circuit, the pull-down circuit makes the water immersion alarm circuit a circuit-closed state, thereby reducing the power consumption of the water immersion alarm circuit.

[0143] On the basis of any one of the above embodiments, an embodiment of the present application further provides an electronic device, wherein the electronic device includes the water immersion alarm circuit shown in any one of the above embodiments.

[0144] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application have been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the embodiments of the present application.

Claims

1. A water immersion alarm circuit, characterized in that: The water immersion alarm circuit includes a power supply, a first probe, a second probe, a pull-down circuit, a trigger unit and an alarm unit, wherein: The positive pole of the power supply is connected to the first probe, the second probe, the pull-down circuit, the trigger unit and the alarm unit are connected in sequence, the pull-down circuit, the trigger unit and the alarm unit are connected to the negative pole of the power supply, the first probe and the second probe have the same orientation, and the first probe and the second probe are both made of conductive materials; When the first probe and the second probe touch the conductive liquid, the first probe and the second probe are electrically connected, and the power supply inputs a high level to the trigger unit through the first probe and the second probe to trigger the alarm unit to alarm; The trigger unit comprises a control unit and a pulse unit, wherein: The control unit is connected to the pulse unit, and the pulse unit is connected to the alarm unit; The control unit is used to control the pulse unit to be turned on or off; The pulse unit is used to generate a pulse signal and send the pulse signal to the alarm unit, so that the alarm unit generates periodically changing alarm information; The control unit comprises a first NAND gate and a second NAND gate, wherein: The input end of the first NAND gate is connected to the second probe, and the output end of the first NAND gate is connected to the input end of the second NAND gate; The pulse unit includes a third NAND gate and a fourth NAND gate, wherein: The output end of the second NAND gate is connected to the input end of the third NAND gate, the output end of the third NAND gate is connected to the input end of the fourth NAND gate, and the output end of the fourth NAND gate is connected to the alarm unit; The third NAND gate includes a third input terminal and a fourth input terminal; the pulse unit includes a first resistor and a third capacitor, wherein: The output end of the second NAND gate is connected to the third input end, the output end of the third NAND gate is respectively connected to one end of the first resistor and the input end of the fourth NAND gate, the other end of the first resistor is connected to the fourth input end, one end of the third capacitor is connected to the other end of the first resistor, and the other end of the third capacitor is connected to the negative electrode of the power supply; The alarm unit comprises an electronic switch and a response unit, wherein: The trigger unit is connected to the electronic switch, and the electronic switch is connected to the response unit; The electronic switch is used to execute the signal output by the trigger unit and control the response unit to generate alarm information.

2. The water immersion alarm circuit according to claim 1, characterized in that: The first NAND gate includes a first input terminal and a second input terminal; the number of the second probes is 2, wherein: A second probe is connected to the first input terminal, and another second probe is connected to the second input terminal.

3. The water immersion alarm circuit according to claim 2, characterized in that: The pull-down circuit comprises a first pull-down resistor and a second pull-down resistor, wherein: The first pull-down resistor is arranged between the first input terminal and the negative electrode of the power supply, and the second pull-down resistor is arranged between the second input terminal and the negative electrode of the power supply.

4. The water immersion alarm circuit according to claim 3, characterized in that: The pull-down circuit comprises a first capacitor and a second capacitor, wherein: The first capacitor is connected to the first pull-down resistor, and the second capacitor is connected to the second pull-down resistor.

5. The water immersion alarm circuit according to any one of claims 1 to 4, characterized in that: A first protective resistor is included between the first probe and the power supply, and a second protective resistor is included between the second probe and the trigger unit.

6. The water immersion alarm circuit according to claim 1, characterized in that: The response unit includes a sound unit and a flash unit, wherein: The electronic switch is connected to the sound unit and / or the flash unit; When the electronic switch is connected to the sound unit, the alarm information is an acoustic signal, and when the electronic switch is connected to the flash unit, the alarm information is an optical signal.

7. The water immersion alarm circuit according to claim 1, characterized in that: The response unit includes a wireless unit and a communication unit, wherein: The electronic switch is connected to the wireless unit, and the wireless unit is connected to the communication unit; The wireless unit is used to generate a wireless signal from the electronic switch signal. When the communication unit receives the wireless signal, the communication unit sends an alarm message to a preset number.

8. An electronic device, characterized in that: The electronic device comprises the water immersion alarm circuit according to any one of claims 1 to 7.

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