Emergency shut-off valve drive circuit and gas emergency shut-off valve

Abstract

The present invention discloses an emergency cut-off valve driving circuit and a gas emergency cut-off valve. Among them, the emergency cut-off valve driving circuit includes: an electronic radio frequency tag; a Bluetooth receiving circuit, which is electrically connected to the electronic radio frequency tag; a valve driving circuit, which is used to be electrically connected to a valve assembly and the battery assembly respectively; the electronic radio frequency tag is used to start after receiving a wireless valve closing signal emitted by a combustible gas alarm, and output a wake-up enable signal to the Bluetooth receiving circuit to wake up the Bluetooth receiving circuit; the Bluetooth receiving circuit is used to establish a wireless communication connection with the combustible gas alarm after being woken up, and control the valve driving circuit to drive the valve assembly to close according to the received wireless valve closing signal; The main purpose of the technical solution of the present invention is to provide an emergency cut-off valve driving circuit, aiming to reduce the battery replacement frequency and extend the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke alarm, and particularly to an emergency cut-off valve driving circuit and a gas emergency cut-off valve. Background Art

[0002] The alarm is generally installed near the ceiling, while the household gas pipeline is usually arranged close to the ground. If the cut-off valve is connected to the alarm by wire, holes need to be drilled on the terrazzo slab during connection, and due to the large amount of kitchen fume, the connecting wire is easily polluted by the fume, which may cause unpredictable consequences; however, when using Bluetooth for wireless connection, since the cut-off valve needs to meet the explosion-proof standard, the Bluetooth module cannot use lithium-ion and lithium polymer batteries, and can only use disposable batteries or rechargeable batteries with high safety and cost, such as lead-acid batteries and lithium iron phosphate batteries. However, the cut-off valve of the gas pipeline is often not triggered for several years, but the Bluetooth module is always in the on state, consuming power for a long time, resulting in the battery needing to be replaced every year. Frequent battery replacement causes inconvenience to users. Summary of the Invention

[0003] The main object of the present invention is to provide an emergency cut-off valve driving circuit and a gas emergency cut-off valve, aiming to reduce the battery replacement frequency and extend the service time.

[0004] To achieve the above object, the emergency cut-off valve driving circuit proposed by the present invention is applied to a gas emergency cut-off valve. The gas emergency cut-off valve includes a battery assembly and a valve assembly. The emergency cut-off valve driving circuit includes:

[0005] An electronic radio frequency tag;

[0006] A Bluetooth receiving circuit, which is electrically connected to the electronic radio frequency tag;

[0007] A valve driving circuit, the controlled end of which is connected to the Bluetooth receiving circuit, the output end of which is used to be connected to the valve assembly, and the input end of which is used to be electrically connected to the battery assembly;

[0008] The electronic radio frequency tag is used to start after receiving a wireless valve closing signal emitted by a combustible gas alarm, and output a wake-up enable signal to the Bluetooth receiving circuit to wake up the Bluetooth receiving circuit;

[0009] The Bluetooth receiving circuit is used to establish a wireless communication connection with the combustible gas alarm after being woken up, and control the valve driving circuit to drive the valve assembly to close according to the received wireless valve closing signal.

[0010] Optionally, the Bluetooth receiving circuit includes:

[0011] A Bluetooth module, which is used to establish a wireless communication connection with the combustible gas alarm;

[0012] A control circuit, the enable terminal of the control circuit is connected to the output terminal of the electronic radio frequency tag, the communication terminal of the control circuit is connected to the communication terminal of the Bluetooth module, and the control circuit is used to be awakened after receiving the wake-up enable signal, control the Bluetooth module to work, and control the valve driving circuit to drive the valve assembly to close according to the received wireless valve closing signal.

[0013] Optionally, the Bluetooth module and the control circuit are integrated on the same chip.

[0014] Optionally, the Bluetooth receiving circuit is further used to start timing after controlling the valve driving circuit to work, and enter the sleep state when the timing time reaches the first preset timing time.

[0015] Optionally, the electronic radio frequency tag is a 2.4G radio frequency tag.

[0016] Optionally, the valve driving circuit includes:

[0017] A boost circuit, the boost circuit is electrically connected to the valve driving circuit, and is used to be electrically connected to the valve assembly and the battery assembly respectively. The boost circuit is used to boost the DC power output by the battery assembly and output the boosted DC power to the valve driving circuit, so that the valve driving circuit drives the valve assembly to close.

[0018] Optionally, the gas emergency cut-off valve driving circuit further includes:

[0019] A switch circuit, the switch circuit is electrically connected to the boost circuit, and is used to be electrically connected to the boost circuit and the battery assembly respectively;

[0020] The Bluetooth receiving circuit is further used to control the switch circuit to close according to the received wireless valve closing signal, so as to control the boost circuit to be electrically connected to the battery assembly.

[0021] The present invention also proposes a gas emergency cut-off valve, which includes a battery assembly, a valve assembly and the above-mentioned emergency cut-off valve driving circuit.

[0022] The technical solution of the present invention uses an electronic radio frequency tag to wake up the Bluetooth main control circuit. When the alarm needs to be connected to the emergency cut-off valve, a wireless valve closing signal is output to activate the electronic radio frequency tag. After the electronic radio frequency tag is activated, it wakes up the Bluetooth receiving circuit. After the Bluetooth receiving circuit is woken up, it establishes a connection with the alarm and controls the valve driving circuit to close according to the received wireless valve closing signal, so that the valve assembly is powered on and closed after receiving the DC power output by the battery assembly. By using an electronic radio frequency tag to wake up the Bluetooth main control circuit, the Bluetooth receiving circuit remains in a sleeping state during the time when there is no gas leakage, greatly reducing the consumption of battery power. Moreover, since the electronic radio frequency tag does not require battery power supply, it is possible to keep the Bluetooth receiving circuit in a sleeping state. Even if the Bluetooth is not periodically woken up, it can still receive the wireless valve closing signal in time to control the valve assembly to close, maximizing the preservation of the battery's electrical energy and avoiding the situation where the Bluetooth receiving circuit is in an open state for a long time, resulting in excessive power consumption and the need to replace the battery annually, thus solving the problem of the inconvenience caused to users by frequent battery replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a schematic structural diagram of an embodiment of the emergency cut-off valve driving circuit of the present invention;

[0025] Figure 2 It is a schematic structural diagram of another embodiment of the emergency cut-off valve driving circuit of the present invention;

[0026] Figure 3 It is a schematic structural diagram of an embodiment of the boost circuit of the emergency cut-off valve driving circuit of the present invention;

[0027] Explanation of the reference numerals in the drawings:

[0028] Label Name Label Name 10 Electronic radio frequency tag U1 Boost chip 20 Bluetooth receiving circuit L1 First inductor 30 Valve drive circuit Q1 First diode 40 Boost circuit C1 to C4 First capacitor to fourth capacitor 50 Switching circuit R1 to R2 First resistor to second resistor

[0029] The realization, functional characteristics, and advantages of the object of the present invention will be further described with reference to the embodiments and the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0032] The present invention provides an emergency cut-off valve drive circuit.

[0033] Referring to Figure 1 , in one embodiment, the emergency cut-off valve drive circuit includes:

[0034] An electronic radio frequency tag 10;

[0035] A Bluetooth receiving circuit 20, the Bluetooth receiving circuit 20 is electrically connected to the electronic radio frequency tag 10;

[0036] A valve drive circuit 30, the controlled end of the valve drive circuit 30 is connected to the Bluetooth receiving circuit 20, the output end of the valve drive circuit 30 is used to be connected to a valve assembly, and the input end of the valve drive circuit 30 is used to be connected to the battery assembly;

[0037] The electronic radio frequency tag 10 is used to start after receiving a wireless valve closing signal emitted by a combustible gas alarm, and output a wake-up enable signal to the Bluetooth receiving circuit 20 to wake up the Bluetooth receiving circuit 20;

[0038] The Bluetooth receiving circuit 20 is used to establish a wireless communication connection with the combustible gas alarm after being woken up, and control the valve drive circuit 30 to drive the valve assembly to close according to the received wireless valve closing signal.

[0039] In this embodiment, the electronic radio frequency tag 10 adopts passive RFID (Radio Frequency Identification), can identify specific targets through wireless communication signals, send out the data stored in the chip by virtue of the energy obtained from the induced current, and there is no need to establish mechanical or optical contact between the identification system and the specific target.

[0040] It should be understood that the alarm is generally installed near the ceiling, while the household gas pipeline is usually set near the ground. If the cut-off valve is wired to the alarm, holes need to be drilled in the terrazzo slab during connection, which will reduce the waterproof performance of the kitchen countertop. And because of the large amount of kitchen fumes, the connecting wires are easily contaminated by the fumes and may cause unpredictable consequences. Therefore, it is necessary to find an emergency cut-off valve that can be wirelessly connected to the alarm. However, when using Bluetooth for wireless connection, the power consumption of Bluetooth is relatively large. Therefore, Bluetooth products need to be based on the scenario of rechargeable batteries. But since the cut-off valve needs to meet the explosion-proof standard, the Bluetooth module cannot use lithium-ion and lithium polymer batteries, and can only use disposable batteries or rechargeable batteries with high safety and cost, such as lead-acid batteries and lithium iron phosphate batteries. However, the cut-off valve of the gas pipeline often will not be triggered for several years. But in order for the Bluetooth module to receive the Bluetooth signal output by the combustible gas alarm in time, it needs to always maintain the receiving state to respond in time. Therefore, the long-term power consumption of the Bluetooth module causes the battery to be replaced every year, and the frequent replacement of the battery causes inconvenience to users.

[0041] To solve the above problems, the present invention uses an electronic radio frequency tag 10 to wake up the Bluetooth main control circuit. When the gas alarm does not trigger a smoke alarm, the Bluetooth receiving circuit 20 is in a sleeping state. When the alarm needs to be connected to the emergency cut-off valve, first use a 13.59M frequency to activate the electronic radio frequency tag 10. After the electronic radio frequency tag 10 is activated, it will wake up the Bluetooth receiving circuit 20 at the same time. After the Bluetooth receiving circuit 20 is woken up, it will establish a connection with the alarm and control the valve drive circuit 30 to close according to the received wireless valve closing signal, so that the valve assembly is powered on and closed after receiving the DC power supply output by the battery assembly.

[0042] Thus, when gas leaks, the gas alarm outputs a wireless valve closing signal. Since the transmission power of the Bluetooth between the gas alarm and the gas emergency cut-off valve in the present invention is greater than 10 dB, it is sufficient to drive the electronic radio frequency tag 10. The electronic radio frequency tag 10 outputs a wake-up enable signal to the Bluetooth receiving circuit 20, so that the Bluetooth receiving circuit 20 is woken up from the sleep mode after receiving the wake-up enable signal, and drives the valve assembly. The cut-off valve of the gas pipe often will not be triggered for several years. Therefore, during the time when the gas does not leak, the Bluetooth receiving circuit 20 has been in a sleep state, greatly reducing the consumption of battery power. Moreover, since the electronic radio frequency tag 10 receives the wireless valve closing signal output by the gas alarm passively, and then obtains energy from the antenna to start the circuit, without the need for battery power supply, it is realized that when there is no gas alarm for up to several years, the Bluetooth receiving circuit 20 is always in a low-power sleep state, reducing the consumption of battery power.

[0043] The technical solution of the present invention uses the electronic radio frequency tag 10 to wake up the Bluetooth main control circuit. When the alarm needs to connect with the emergency cut-off valve, it outputs a wireless valve closing signal to activate the electronic radio frequency tag 10. After the electronic radio frequency tag 10 is activated, it wakes up the Bluetooth receiving circuit 20. After the Bluetooth receiving circuit 20 is woken up, it establishes a connection with the alarm, and controls the valve driving circuit 30 to close according to the received wireless valve closing signal, so that the valve assembly is powered on and closed after receiving the DC power output by the battery assembly. By using the electronic radio frequency tag 10 to wake up the Bluetooth main control circuit, the Bluetooth receiving circuit 20 has been in a sleep state during the time when the gas does not leak, greatly reducing the consumption of battery power. Moreover, since the electronic radio frequency tag 10 does not require battery power supply, it is possible to keep the Bluetooth receiving circuit 20 in a sleep state all the time. Even if the Bluetooth is not woken up regularly, it can still receive the wireless valve closing signal in time to control the valve assembly to close, maximizing the retention of the battery's electrical energy and avoiding the situation that the Bluetooth receiving circuit 20 is in an on state for a long time, resulting in too high power consumption and the need to replace the battery every year, solving the problem of inconvenience caused to users by frequent battery replacement.

[0044] Refer to Figure 1 , in one embodiment, the Bluetooth receiving circuit 20 includes:

[0045] A Bluetooth module for establishing a wireless communication connection with the combustible gas alarm;

[0046] A control circuit, wherein an enabling end of the control circuit is connected to an output end of the electronic radio frequency tag 10, a communication end of the control circuit is connected to a communication end of the Bluetooth module, and the control circuit is configured to be woken up after receiving the wake-up enabling signal, control the Bluetooth module to operate, and control the valve driving circuit 30 to drive the valve assembly to close according to the received wireless valve closing signal.

[0047] In this embodiment, when gas leaks, the gas alarm outputs a wireless valve closing signal to the electronic radio frequency tag 10, and the electronic radio frequency tag 10 outputs a wake-up enabling signal to the control circuit, so that the control circuit is woken up from the sleep mode after receiving the wake-up enabling signal, and outputs a Bluetooth enabling signal to the Bluetooth module, causing the Bluetooth module to be woken up and establish a wireless connection with the gas alarm. The control circuit drives the valve assembly through the Bluetooth module after receiving the wireless valve closing signal, so that the valve assembly is closed. The cut-off valve of the gas pipe often does not trigger for several years. Therefore, during the time when there is no gas leakage, the Bluetooth module and the control circuit are always in the sleep state, greatly reducing the consumption of battery power. Moreover, since the electronic radio frequency tag 10 passively receives the wireless valve closing signal output by the gas alarm and then obtains energy from the antenna to start the circuit without being powered by a battery, the Bluetooth receiving circuit 20 is always in a low-power sleep state during the situation where there is no gas alarm for up to several years, reducing the consumption of battery power.

[0048] Refer to Figure 1 , in one embodiment, the Bluetooth module and the control circuit are integrated on the same chip.

[0049] In this embodiment, the chip can be a Bluetooth main control chip of the ATS301X series, and can also be a Bluetooth main control chip of the AB1562 series or other models in other embodiments.

[0050] In this embodiment, by integrating the Bluetooth module and the control circuit on the same chip, the circuit wiring is streamlined, the occupied space of the Bluetooth module and the control circuit is saved, the response speed is faster when the Bluetooth module is woken up, the response speed of the emergency cut-off valve when the combustible gas alarm outputs a wireless valve closing signal is increased, and the safety of the emergency cut-off valve is improved.

[0051] Refer to Figure 1 , in one embodiment, the Bluetooth receiving circuit 20 is further configured to start timing after controlling the valve driving circuit 30 to operate, and enter the sleep state when the timing time reaches the first preset timing time.

[0052] In this embodiment, the Bluetooth receiving circuit 20 is preset with a first preset timing time, where the first preset timing time is the response time of the valve closing driving circuit after the Bluetooth receiving circuit 20 outputs a valve closing control signal (such as 3 seconds, 4 seconds, or the response time of other valve closing driving circuits after receiving a signal). The first preset timing time can be set by R & D personnel during R & D according to the time when the emergency cut-off valve closes after receiving a wireless valve closing signal. For example, the first preset timing time corresponding to an emergency cut-off valve with a response time of 3 seconds after receiving a wireless valve closing signal is 3 seconds.

[0053] By setting the first preset timing time, after the Bluetooth receiving circuit 20 receives a wireless valve closing signal and controls the valve closing driving circuit to drive the valve assembly to close, it can immediately enter the sleep state, shortening the normal working time of the emergency cut-off valve to a few seconds. This avoids the emergency cut-off valve continuing to maintain the normal working state after response and consuming battery power, enabling the emergency cut-off valve to minimize battery power consumption even under repeated startups, and avoiding the situation where the Bluetooth receiving circuit 20 is in the on state for a long time resulting in high power consumption and the need to replace the battery annually, thus solving the problem of inconvenience to users caused by frequent battery replacement.

[0054] Refer to Figure 1 , in one embodiment, the electronic radio frequency tag 10 is a 2.4G radio frequency tag.

[0055] In this embodiment, the communication frequency between the gas alarm and the emergency cut-off valve is 2.4G.

[0056] The receiving frequency of the electronic radio frequency tag 10 is usually 13.95M. Some electronic radio frequency tags 10 with small-size antennas can receive radio frequency signals such as 915M or 2.4G due to the need for a higher receiving frequency; among them, the signal frequency of 2.4G is exactly within the transmitting frequency band of Bluetooth. Therefore, by setting the receiving frequency band of the electronic radio frequency tag 10 to 2.4G, when the transmitting power of Bluetooth is greater than 10 dB, the electronic radio frequency tag 10 can receive a wireless valve closing signal with sufficient energy, start its own circuit, verify the identity of the wireless communication signal output by the combustible gas alarm, and thus output a wake-up enable signal to wake up the Bluetooth receiving circuit 20. By setting the receiving frequency band of the electronic radio frequency tag 10 to 2.4G, the electronic radio frequency tag 10 can receive the wireless valve closing signal output by the combustible gas alarm, enabling the Bluetooth receiving circuit 20 to remain in the sleep state all the time when there is no smoke alarm, without the need to start regularly or maintain the receiving state for a long time to receive the wireless valve closing signal in real time, maximizing the retention of battery power, avoiding the situation where the Bluetooth receiving circuit 20 is in the on state for a long time resulting in high power consumption and the need to replace the battery annually, and solving the problem of inconvenience to users caused by frequent battery replacement.

[0057] Referring to Figures 1 to 3 , in one embodiment, the valve driving circuit 30 includes:

[0058] A boost circuit 40, the boost circuit 40 is electrically connected to the valve driving circuit 30 and is used to be electrically connected to the valve assembly and the battery assembly respectively. The boost assembly is used to boost the DC power output by the battery assembly and output the boosted DC power to the valve driving circuit 30, so that the valve driving circuit 30 drives the valve assembly to close.

[0059] In this embodiment, the boost circuit 40 includes a boost chip U1, a first inductor L1, a first diode Q1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a first resistor R1 and a second resistor R2; the input terminal of the boost chip U1 is respectively connected to the enable terminal of the boost chip U1, the first end of the first inductor L1 and the first end of the first capacitor C1, the output terminal of the boost chip U1 is respectively connected to the second end of the first inductor L1 and the anode of the first diode Q1, the feedback terminal of the boost chip U1 is respectively connected to the second end of the first resistor R1, the first end of the second resistor R2 and the second end of the second capacitor C2; the cathode of the first diode Q1 is the output terminal of the boost circuit 40 and is respectively connected to the first end of the first resistor R1, the first end of the second capacitor C2, the first end of the third capacitor C3 and the first end of the fourth capacitor C4 respectively; the ground terminal of the boost chip U1, the second end of the first capacitor C1, the second end of the second resistor R2, the second end of the third resistor and the second end of the fourth resistor are respectively grounded.

[0060] Specifically, when the valve driving circuit 30 drives the valve assembly to close, the input terminal of the boost chip U1 is used to access the DC power output by the battery assembly, boost the received DC power, and output it to the valve driving circuit 30 through the single-way conduction of the first diode Q1. The first capacitor C1 stabilizes the DC power output by the battery assembly, and the second capacitor C2, the third capacitor C3 and the fourth capacitor C4 stabilize the DC circuit output from the boost circuit 40 to the valve driving circuit 30.

[0061] In this embodiment, by adopting the boost circuit 40, the input battery voltage is boosted through the boost circuit 40. For example, a battery voltage of 4.5V cannot drive a valve with a working voltage of 12V. The boost circuit 40 boosts the 4.5V battery voltage to 12V, so that the valve driving circuit 30 drives the valve assembly to close.

[0062] Referring to Figures 1 to 3, in one embodiment, the driving circuit of the gas emergency cut-off valve further includes:

[0063] A switch circuit 50, which is electrically connected to the boost circuit 40 and is used to be electrically connected to the boost circuit 40 and the battery assembly respectively;

[0064] The Bluetooth receiving circuit 20 is further used to control the switch circuit 50 to close according to the received wireless valve closing signal, so as to conduct the connection between the boost circuit 40 and the battery assembly.

[0065] In this embodiment, the switch circuit 50 may include a MOS transistor. In other embodiments, it may also be a semiconductor switching device such as a triode. The gate of the MOS transistor is the controlled end of the switch circuit 50. The drain of the MOS transistor is used to be electrically connected to the battery assembly, and the source of the MOS transistor is used to be connected to the input end of the boost chip U1.

[0066] Specifically, when the gas alarm does not output a wireless alarm signal, the Bluetooth receiving circuit 20 of the emergency cut-off valve is in a sleeping state. By setting the switch circuit 50, the connection between the battery voltage and the boost circuit 40 is disconnected, preventing the boost circuit 40 from having a static power consumption in the conduction loop from the inductor to the second resistor R2 due to being connected to a DC power supply. Since the static power consumption of the boost circuit 40 is too high, it will affect the service life of the battery. By adopting the switch circuit 50, the power supply is completely turned off by the switch circuit 50 when the emergency cut-off valve is in a sleeping state, so that the static current is less than 1 μA, greatly prolonging the service life of the battery.

[0067] The present invention also provides a gas emergency cut-off valve, which includes a battery assembly, a valve assembly and the above-mentioned driving circuit of the emergency cut-off valve. The specific structure of the driving circuit of the emergency cut-off valve refers to the above-mentioned embodiment. Since this gas emergency cut-off valve adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0068] The above are only the optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description and drawings of the present invention under the inventive concept of the present invention, or direct / indirect application in other related technical fields are all included in the patent protection scope of the present invention.

Claims

1. An emergency cut-off valve drive circuit is applied to a gas emergency cut-off valve, characterized in that, The gas emergency cut-off valve includes a battery assembly and a valve assembly. The emergency cut-off valve driving circuit includes: An electronic radio frequency tag; A Bluetooth receiving circuit, which is electrically connected to the electronic radio frequency tag; A valve driving circuit, the controlled end of the valve driving circuit is connected to the Bluetooth receiving circuit, the output end of the valve driving circuit is used to be connected to the valve assembly, and the input end of the valve driving circuit is used to be electrically connected to the battery assembly; The electronic radio frequency tag is used to start after receiving the wireless valve closing signal emitted by the combustible gas alarm, and output a wake-up enable signal to the Bluetooth receiving circuit to wake up the Bluetooth receiving circuit; The Bluetooth receiving circuit is used to establish a wireless communication connection with the combustible gas alarm after being woken up, and control the valve driving circuit to drive the valve assembly to close according to the received wireless valve closing signal; The Bluetooth receiving circuit includes: A Bluetooth module, which is used to establish a wireless communication connection with the combustible gas alarm; A control circuit, the enable end of the control circuit is connected to the output end of the electronic radio frequency tag, the communication end of the control circuit is connected to the communication end of the Bluetooth module, and the control circuit is used to be woken up after receiving the wake-up enable signal, control the Bluetooth module to work, and control the valve driving circuit to drive the valve assembly to close according to the received wireless valve closing signal.

2. The emergency cut-off valve drive circuit according to claim 1, wherein The Bluetooth module and the control circuit are integrated on the same chip.

3. The emergency cut-off valve drive circuit according to claim 1, characterized in that, The Bluetooth receiving circuit is further used to start timing after controlling the valve driving circuit to work, and enter the sleep state when the timing time reaches the first preset timing time.

4. The emergency cut-off valve drive circuit according to claim 1, characterized in that, The electronic radio frequency tag is a 2.4G radio frequency tag.

5. The emergency cut-off valve drive circuit according to claim 1, characterized in that The emergency cut-off valve driving circuit further includes: A boost circuit, which is electrically connected to the valve driving circuit and is used to be electrically connected to the valve assembly and the battery assembly respectively. The boost circuit is used to boost the DC power output by the battery assembly and output the boosted DC power to the valve driving circuit so that the valve driving circuit drives the valve assembly to close.

6. The emergency cut-off valve drive circuit according to claim 5, characterized in that, The emergency cut-off valve driving circuit further includes: A switch circuit, which is electrically connected to the boost circuit and is used to be electrically connected to the boost circuit and the battery assembly respectively; The Bluetooth receiving circuit is further used to control the switch circuit to close according to the received wireless valve closing signal to control the boost circuit to be electrically connected to the battery assembly.

7. A gas emergency cut-off valve, characterized in that, The gas emergency cut-off valve includes a battery assembly, a valve assembly and the emergency cut-off valve driving circuit according to any one of claims 1-6.

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