CN111653066A - Weighing type gas leakage alarm - Google Patents
Weighing type gas leakage alarm Download PDFInfo
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- CN111653066A CN111653066A CN202010250444.6A CN202010250444A CN111653066A CN 111653066 A CN111653066 A CN 111653066A CN 202010250444 A CN202010250444 A CN 202010250444A CN 111653066 A CN111653066 A CN 111653066A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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Abstract
The invention relates to the technical field of gas detection, in particular to a weighing type gas leakage alarm which can monitor a gas steel cylinder and alarm when leakage occurs, and comprises a weighing sensor, a signal acquisition interface module, a power supply module, a system control module and an alarm module; the weighing sensor is used for weighing and detecting the gas steel cylinder; the signal acquisition module is used for acquiring signals of the weighing sensor and transmitting the signals to the system control module, and the signal acquisition module comprises a double operational amplifier; the system control module is used for receiving and processing signals of the weighing sensor and sending alarm signals to the alarm module, and comprises an STM32 series single chip microcomputer; the alarm module comprises a sound alarm and/or an indicator light alarm, and the power supply module is used for supplying power to each module of the alarm.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a weighing type gas leakage alarm.
Background
In general industrial and civil construction, a gas fire extinguishing control system is required to be installed, so that timely and effective automatic fire extinguishing can be ensured when a fire disaster occurs; the gas extinguishing agent storage bottle (steel bottle) is a very important component in the whole system, and the gas (such as carbon dioxide and heptafluoropropane) which can extinguish fire when being filled in the steel bottle can generate gas leakage due to the reason of long installation or time and the like. In severe cases, the gas in the cylinder may leak completely, and when a fire really occurs, the fire is needed to be extinguished, and the extinguishing gas cannot be sprayed out! The best fire extinguishing time can be missed, and great loss is caused.
Disclosure of Invention
In order to solve the problem that the gas in a steel cylinder cannot be effectively monitored in the prior art, the invention provides a weighing type gas leakage alarm which can monitor a gas steel cylinder and alarm when leakage occurs.
The technical scheme is as follows: a weighing type gas leakage alarm is characterized by comprising a weighing sensor, a signal acquisition interface module, a power supply module, a system control module and an alarm module; the weighing sensor is used for weighing and detecting the gas steel cylinder; the signal acquisition module is used for acquiring signals of the weighing sensor and transmitting the signals to the system control module, and the signal acquisition module comprises a double operational amplifier; the system control module is used for receiving and processing signals of the weighing sensor and sending alarm signals to the alarm module, and comprises an STM32 series single chip microcomputer; the alarm module comprises a sound alarm and/or an indicator light alarm, and the power supply module is used for supplying power to each module of the alarm.
The system is further characterized in that in the system control module, the STM32 series single-chip microcomputer is specifically a single-chip microcomputer U1;
in the signal acquisition module, the dual operational amplifier comprises an LM 358-type operational amplifier U7, a pin 2 and a pin 3 of the operational amplifier U7 are respectively connected with a signal line of the weighing sensor through a resistor R201 and a resistor R202, the pin 2 of the operational amplifier U7 is connected with a pin 1 of the operational amplifier U7 and one end of a resistor R203 through a resistor R601, the other end of the resistor R203 is connected with a pin 6 of the operational amplifier U7 and one end of a resistor R708, a pin 5 of the operational amplifier U7 is connected with one end of a resistor R204 and one end of a resistor R709, the other end of the resistor R204 is connected with VCC, the other end of the resistor R709 is grounded, the other end of the resistor R708 is connected with a pin 7 of the operational amplifier U7, one end of a capacitor C510, one end of the capacitor C601 and one end of the resistor R503, and the other end of the resistor R503 is connected with a;
the number of the weighing sensors is four, and the signal acquisition module is correspondingly provided with four dual operational amplifiers and corresponding signal acquisition circuits;
the power supply module comprises a voltage stabilizing chip U3, a power conversion chip U4 and a Schottky diode, wherein a pin 1 of the voltage stabilizing chip U3 is connected with one end of a capacitor C507, one end of a capacitor C4 and one end of a fuse F1, the other end of the fuse F1 is connected with 12VDC through a Schottky diode D5, a pin 4 of the voltage stabilizing chip U3 is connected with the cathode of a diode T1, one end of a capacitor L2, one end of a capacitor C508 and one end of a capacitor C5 and outputs VCC, a pin 2 of the voltage stabilizing chip U3 is connected with the cathode of a Schottky diode D6 and the other end of the capacitor L2, the other end of the capacitor C4, the other end of the capacitor C507, a pin 3 and a pin 5 of the voltage stabilizing chip U3, the anode of the Schottky diode D6, the anode of a diode T1, the other end of the capacitor C; a pin 3 of the power conversion chip U4 is connected with VCC, one end of a capacitor C301 and one end of a capacitor C512, a pin 2 of the power conversion chip U4 is connected with one end of a capacitor C517 and one end of a capacitor C302 and outputs 3.3V, and the other end of the capacitor C310, the other end of the capacitor C512, the other end of the capacitor C517 and the other end of the capacitor C302 are all grounded; the power line of the weighing sensor is connected with 12VDC through the Schottky diode;
the sound alarm comprises a loudspeaker SP1, one end of the SP1 is grounded, the other end of the SP1 is connected with an emitter of a triode Q4, a collector of the triode Q4 is connected with VCC, a base is connected with one end of a resistor R3, the other end of the resistor R3 is connected with a collector of a triode Q3, and the emitter of the triode Q3 is grounded, and the base is connected with a pin 58 of the singlechip U1 through a resistor R716;
the indicator lamp alarm comprises an indicator lamp LED1, an indicator lamp LED2, an indicator lamp LED3, an indicator lamp LED4, an indicator lamp LED5, an indicator lamp LED6 and an indicator lamp LED7, wherein the anode of each indicator lamp is connected with 3.3V, and the cathode of each indicator lamp is connected with the single chip microcomputer U1 through a resistor;
the alarm information storage module comprises an EEPROM chip U2, pins 1 to 4 of the EEPROM chip U2 are connected with one end of a capacitor C506 and grounded, the other end of the capacitor C506 is connected with 3.3V, pins 7 and 8 of the EEPROM chip U2 are grounded and connected with 3.3V, a pin 5 of the EEPROM chip U2 is connected with one end of a resistor R707 and a pin 82 of the singlechip U1, a pin 6 of the EEPROM chip U2 is connected with one end of a resistor R706 and a pin 81 of the singlechip U1, and the other end of the resistor R706 and the other end of the resistor R707 are both connected with 3.3V;
the single-chip microcomputer U1 is further connected with a touch screen interface J2, one end of a 35-pin connecting resistor R507, one end of a 36-pin connecting resistor R508, one end of a 37-pin connecting resistor R509 and one end of a 38-pin connecting R510 of the touch screen interface J2 are connected with the collector of a triode Q1, the emitter and the base of the triode Q1 are grounded and connected with the 47 pin of the single-chip microcomputer U1 through a resistor R2, one end of the resistor R1 and one end of a capacitor C2 are connected with the 24 pin of the touch screen interface J2, the other end of the capacitor C2 is grounded, and the other end of the resistor R1 is connected with 3.3V;
singlechip U1 still connects host computer communication circuit, host computer communication circuit is including keeping apart power module U5 and opto-coupler G1, opto-coupler G2, opto-coupler G3, keep apart power module U5's 2 feet and connect electric capacity C518 one end, electric capacity C6 one end, VCC, keep apart power module U5's 1 foot and connect electric capacity C518 other end, electric capacity C6 other end and ground connection, keep apart power module U5's 4 feet and connect electric capacity C303, electric capacity C519 and export VCC1, keep apart power module U5's 3 feet and connect electric capacity C303 other end, electric capacity C519 other end and ground connection, VCC, 4 foot ground connection, 5 foot connecting resistance R301 one end are connected to 6 feet of opto-coupler G1 and singlechip U1's 26 foot, 1 foot connect VCC1, 3 foot connecting resistance R801 one end, the resistance R301 other end is connected, the 1 foot of resistance R other end connection VCC that receiving and dispatching chip U6, the opto-coupler G2's 1V 3.3V 3 foot is connected to VCC, A 4-pin is grounded, one end of a 5-pin connecting resistor R302 and one end of the resistor R303 are connected, a 6-pin is connected with VCC1 and the other end of the resistor R302, a 3-pin is connected with one end of a resistor R802, the other end of the resistor R802 is connected with a pin 24 of the singlechip U1, the other end of the resistor R303 is connected with a base electrode of a triode Q1, the collector of the transistor Q1 is connected to VCC1, one end of the emitter connecting resistor R304 and the pins 2 and 3 of the transceiver chip U6, the other end of the resistor R304 is grounded, a pin 1 of the optocoupler G3 is connected with 3.3V and 4 pins for grounding, one end of a pin 5 connecting resistor R305 and a pin 4 and 6 of the transceiver chip U6 are connected with one end of a VCC1 and one end of a pin 3 connecting resistor R803, the other end of the resistor R802 is connected with a pin 25 of the singlechip U1, a pin 5 of the transceiver chip U6 is grounded, a pin 8 is connected with one end of the capacitor C520 and VCC1, the other end of the capacitor C520 is grounded, and pins 6 and 7 of the transceiver chip U6 are respectively connected with an interface of an upper computer.
After the invention is adopted, the weight of the gas steel cylinder is monitored by the weighing sensor in real time, and when the weight of the gas steel cylinder changes, the output signal of the weighing sensor is processed to monitor the leakage condition of the fire extinguishing agent in the storage bottle in real time and alarm and remind.
Drawings
FIG. 1 is a schematic circuit diagram of a system control module;
FIG. 2 is a schematic circuit diagram of a signal acquisition interface module;
FIG. 3 is a schematic diagram of a power module;
FIG. 4 is a schematic diagram of a communication circuit of an upper computer;
FIG. 5 is a schematic diagram of an audible alarm circuit;
FIG. 6 is a schematic diagram of an indicator warning circuit;
FIG. 7 is a schematic diagram of a touch screen interface circuit;
FIG. 8 is a schematic circuit diagram of an alarm information storage module;
fig. 9 is an external wiring diagram.
Detailed Description
As shown in fig. 1 to 9, a weighing type gas leakage alarm comprises a weighing sensor, a signal acquisition interface module, a power supply module, a system control module and an alarm module; the weighing sensor is used for weighing and detecting the gas steel cylinder; the signal acquisition module is used for acquiring signals of the weighing sensor and transmitting the signals to the system control module, and comprises a dual operational amplifier; the system control module is used for receiving and processing signals of the weighing sensor and sending alarm signals to the alarm module, and comprises an STM32 series single chip microcomputer; the alarm module comprises a sound alarm and/or an indicator light alarm, and the power supply module is used for supplying power to all the modules of the alarm.
In the system control module, the STM32 series single chip microcomputer is specifically a single chip microcomputer U1, and its peripheral circuit is shown in the figure, wherein, a pin 14 of the single chip microcomputer U1 is connected with a pin 7 of the low power consumption microprocessor U2 and one end of a resistor R701, the other end of the resistor R701 is grounded, a pin 2 of the low power consumption microprocessor U2 is connected with a pin 3.3V and a pin 1 to one end of a switch SW, the other end of the switch SW is connected with a pin 3 and a pin 4 of the low power consumption microprocessor U2 and grounded, and a pin 72 of the single chip microcomputer U1 are also connected with.
Because weighing sensor sets up four, correspond in the signal acquisition module and set up four two fortune amplifiers and the signal acquisition circuit that corresponds, four ways signal acquisition circuit structure is the same, and two operational amplifier include that LM358 type fortune is put U7, U8, U9, U10, specifically explain to signal acquisition circuit all the way below: the 2 pin and the 3 pin of the operational amplifier U7 are respectively connected with a signal wire of a weighing sensor through a resistor R201 and a resistor R202, the 2 pin of the operational amplifier U7 is connected with the 1 pin of the operational amplifier U7 and one end of a resistor R203 through a resistor R601, the other end of the resistor R203 is connected with the 6 pin of the operational amplifier U7 and one end of a resistor R708, the 5 pin of the operational amplifier U7 is connected with one end of a resistor R204 and one end of a resistor R709, the other end of the resistor R204 is connected with VCC, the other end of the resistor R709 is grounded, the other end of the resistor R708 is connected with the 7 pin of the operational amplifier U7, one end of a capacitor C510, one end of a capacitor C601 and one end of a resistor R503, and the other.
The power supply module comprises a voltage stabilizing chip U3, a power conversion chip U4 and a Schottky diode, wherein a pin 1 of the voltage stabilizing chip U3 is connected with one end of a capacitor C507, one end of a capacitor C4 and one end of a fuse F1, the other end of the fuse F1 is connected with 12VDC through the Schottky diode D5, a pin 4 of the voltage stabilizing chip U3 is connected with the cathode of a diode T1, one end of a capacitor L2, one end of a capacitor C508 and one end of a capacitor C5 and outputs VCC, a pin 2 of the voltage stabilizing chip U3 is connected with the cathode of a Schottky diode D6 and the other end of the capacitor L2, the other end of a capacitor C4, the other end of a capacitor C507, a pin 3 and a pin 5 of the voltage stabilizing chip U3, the anode of a Schottky diode D6, the anode of a diode T1, the other; a pin 3 of the power conversion chip U4 is connected with VCC, one end of a capacitor C301 and one end of a capacitor C512, a pin 2 of the power conversion chip U4 is connected with one end of a capacitor C517 and one end of a capacitor C302 and outputs 3.3V, and the other end of the capacitor C310, the other end of the capacitor C512, the other end of the capacitor C517 and the other end of the capacitor C302 are all grounded; the power line of the load cell is connected to 12VDC through a schottky diode.
The sound alarm comprises a loudspeaker SP1, wherein one end of the SP1 is grounded, the other end of the SP is connected with an emitter of a triode Q4, a collector of a triode Q4 is connected with VCC, a base is connected with one end of a resistor R3, the other end of the resistor R3 is connected with a collector of a triode Q3, an emitter of a triode Q3 is grounded, and a base is connected with a pin 58 of a singlechip U1 through a resistor R716.
The indicator lamp alarm comprises an indicator lamp LED1, an indicator lamp LED2, an indicator lamp LED3, an indicator lamp LED4, an indicator lamp LED5, an indicator lamp LED6 and an indicator lamp LED7, wherein the anode of each indicator lamp is connected with 3.3V, and the cathode of each indicator lamp is connected with the single chip microcomputer U1 through a resistor. And work reminding, fault reminding, noise reduction reminding and four-loop alarm are respectively realized.
Singlechip U1 connects alarm information storage module, alarm information storage module includes EEPROM chip U2, EEPROM chip U2's 1 foot to 4 foot connection electric capacity C506 one end and ground connection, the electric capacity C506 other end is connected 3.3V, EEPROM chip U2's 7 foot ground connection, 8 foot connection 3.3V, EEPROM chip U2's 5 foot connecting resistance R707 one end, singlechip U1's 82 feet, EEPROM chip U2's 6 foot connecting resistance R706 one end, singlechip U1's 81 feet, the resistance R706 other end, the resistance R707 other end all connects 3.3V.
The single-chip microcomputer U1 is further connected with a touch screen interface J2, one end of a 35-pin connecting resistor R507, one end of a 36-pin connecting resistor R508, one end of a 37-pin connecting resistor R509, one end of a 38-pin connecting resistor R510, the other end of a resistor R507, the other end of a resistor R508, the other end of a resistor R509, the other end of the R510 is connected with a collector of a triode Q1, an emitter of the triode Q1 is grounded, a base of the triode Q1 is connected with a 47 pin of the single-chip microcomputer U1 through a resistor R2, one end of a 24-pin connecting resistor R1 of the touch screen interface J2, one end of a capacitor C2, the other end of a capacitor.
The single chip microcomputer U1 is further connected with an upper computer communication circuit, the upper computer communication circuit comprises an isolation power supply module U5, an optocoupler G1, an optocoupler G2 and an optocoupler G3, a pin 2 of the isolation power supply module U5 is connected with one end of a capacitor C518, one end of a capacitor C6 and VCC, a pin 1 of the isolation power supply module U5 is connected with the other end of the capacitor C518 and the other end of the capacitor C6 and is grounded, a pin 4 of the isolation power supply module U5 is connected with the capacitor C303 and the capacitor C519 and outputs VCC1, a pin 3 of the isolation power supply module U5 is connected with the other end of the capacitor C303 and the other end of the capacitor C519 and is grounded, a pin 6 of the optocoupler G1 is connected with VCC and a pin 4 and is grounded, one end of a pin 5 of a pin connecting resistor R301 and a pin 26 of the single chip microcomputer U1, a pin 1 is connected with VCC1 and one end of a pin 3 connecting resistor R801, the other end of the resistor R301 is connected with VCC, the other end of, The other end of VCC1 and resistance R302 is connected to the 6 foot, 3 foot connecting resistance R802 one end, the 24 feet of singlechip U1 are connected to the resistance R802 other end, the base of triode Q1 is connected to the resistance R303 other end, VCC1 is connected to the collecting electrode of triode Q1, 2 feet and 3 feet of emitter connecting resistance R304 one end and transceiver chip U6, the resistance R304 other end ground, 3.3V is connected to 1 foot of opto-coupler G3, 4 feet ground, 4 feet of 5 foot connecting resistance R305 one end and transceiver chip U6's 4 feet, 6 feet connecting VCC1, 3 feet connecting resistance R803 one end, the 25 feet of singlechip U1 are connected to the resistance R802 other end, 5 feet ground of transceiver chip U6, 8 feet connecting capacitance C520 one end, VCC1, the other end ground, the host computer of transceiver chip U6 and 7 feet are connected with the upper interface respectively.
According to the invention, the output of the weighing sensor is changed due to the weight change of the gas fire extinguishing agent storage bottle, the output signal of the weighing sensor is processed, and the fire extinguishing agent leakage condition in the storage bottle is monitored in real time. The registration weight and the real-time weight of each steel bottle are displayed on the liquid crystal screen in real time:
1. the invention can monitor four steel cylinders at most simultaneously, when any one or more of the four steel cylinders leaks and reaches 5% -50% (adjustable) of the original filling amount, the stepping is adjustable by 1%, the invention can send out sound alarm signals, simultaneously, the indicator lamp corresponding to the steel cylinder leaking can continuously flash, and the real-time signals of each steel cylinder are fed back to the upper computer.
2. The weight of the cylinder is to be registered for the first use, and if the cylinder is replaced, the weight of the cylinder is to be registered again.
3. After the leakage happens, the person on duty can immediately record which steel cylinder gas or gases are leaked, replace the steel cylinder in time and register the weight of the steel cylinder again.
The invention monitors the gas steel cylinder in real time, sends out alarm sound and light when the gas leakage exceeds the set weight, simultaneously transmits the signal to an upper computer to inform an attendant in time, and then checks the gas leakage reason on site and replaces the steel cylinder.
Claims (10)
1. A weighing type gas leakage alarm is characterized by comprising a weighing sensor, a signal acquisition interface module, a power supply module, a system control module and an alarm module; the weighing sensor is used for weighing and detecting the gas steel cylinder; the signal acquisition module is used for acquiring signals of the weighing sensor and transmitting the signals to the system control module, and the signal acquisition module comprises a double operational amplifier; the system control module is used for receiving and processing signals of the weighing sensor and sending alarm signals to the alarm module, and comprises an STM32 series single chip microcomputer; the alarm module comprises a sound alarm and/or an indicator light alarm, and the power supply module is used for supplying power to each module of the alarm.
2. The weighing type gas leakage alarm of claim 1, wherein in the system control module, the STM32 series single-chip microcomputer is a single-chip microcomputer U1.
3. A weighing-type gas leak alarm according to claim 2, in the signal acquisition module, the dual operational amplifier comprises an LM358 type operational amplifier U7, the 2 pin and the 3 pin of the operational amplifier U7 are respectively connected with a signal wire of the weighing sensor through a resistor R201 and a resistor R202, the 2 pin of the operational amplifier U7 is connected with the 1 pin of the operational amplifier U7 and one end of a resistor R203 through a resistor R601, the other end of the resistor R203 is connected with the pin 6 of the operational amplifier U7 and one end of the resistor R708, the 5-pin of the operational amplifier U7 is connected with one end of a resistor R204 and one end of a resistor R709, the other end of the resistor R204 is connected with VCC, the other end of the resistor R709 is grounded, the other end of the resistor R708 is connected with the pin 7 of the operational amplifier U7, one end of the capacitor C510, one end of the capacitor C601 and one end of the resistor R503, the other end of the resistor R503 is connected with the cathode of the diode V101 and the 15 pin of the singlechip U1.
4. The weighing type gas leakage alarm device according to claim 1, wherein the number of the weighing sensors is four, and the signal acquisition module is correspondingly provided with four dual operational amplifiers and corresponding signal acquisition circuits.
5. The weighing type gas leakage alarm device according to claim 2, wherein the power module comprises a voltage stabilizing chip U3, a power conversion chip U4 and a Schottky diode, wherein a pin 1 of the voltage stabilizing chip U3 is connected with one end of a capacitor C507, one end of a capacitor C4 and one end of a fuse F1, the other end of the fuse F1 is connected with 12VDC through a Schottky diode D5, a pin 4 of the voltage stabilizing chip U3 is connected with the negative electrode of a diode T1, one end of a capacitor L2, one end of a capacitor C508, one end of a capacitor C5 and outputs VCC, a pin 2 of the voltage stabilizing chip U3 is connected with the negative electrode of a Schottky diode D6 and the other end of the capacitor L2, the other end of the capacitor C4, the other end of the capacitor C507, a pin 3 and a pin 5 of the voltage stabilizing chip U3, the positive electrode of the Schottky diode D6, the positive electrode of a diode T1, the other end of the capacitor C508 and; a pin 3 of the power conversion chip U4 is connected with VCC, one end of a capacitor C301 and one end of a capacitor C512, a pin 2 of the power conversion chip U4 is connected with one end of a capacitor C517 and one end of a capacitor C302 and outputs 3.3V, and the other end of the capacitor C310, the other end of the capacitor C512, the other end of the capacitor C517 and the other end of the capacitor C302 are all grounded; the power line of the weighing sensor is connected with 12VDC through the Schottky diode.
6. The weighing type gas leakage alarm of claim 2, wherein the audible alarm comprises a speaker SP1, one end of the SP1 is grounded, the other end of the SP1 is connected with an emitter of a triode Q4, a collector of the triode Q4 is connected with VCC, a base of the SP 4 is connected with one end of a resistor R3, the other end of the resistor R3 is connected with a collector of a triode Q3, and an emitter of the triode Q3 is grounded, and the base of the triode Q3 is connected with a pin 58 of the single chip microcomputer U1 through a resistor R716.
7. The weighing type gas leakage alarm device according to claim 2, wherein the indicator light alarm comprises an indicator light LED1, an indicator light LED2, an indicator light LED3, an indicator light LED4, an indicator light LED5, an indicator light LED6 and an indicator light LED7, the positive pole of each indicator light is connected with 3.3V, and the negative pole of each indicator light is connected with the single chip microcomputer U1 through a resistor.
8. The weighing type gas leakage alarm of claim 2, wherein the single chip microcomputer U1 is connected with an alarm information storage module, the alarm information storage module comprises an EEPROM chip U2, pins 1 to 4 of the EEPROM chip U2 are connected with one end of a capacitor C506 and grounded, the other end of the capacitor C506 is connected with 3.3V, pins 7 and 8 of the EEPROM chip U2 are grounded and connected with 3.3V, pins 5 of the EEPROM chip U2 are connected with one end of a resistor R707 and a pin 82 of the single chip microcomputer U1, pins 6 of the EEPROM chip U2 are connected with one end of a resistor R706 and a pin 81 of the single chip microcomputer U1, and the other end of the resistor R706 and the other end of the resistor R707 are both connected with 3.3V.
9. The weighing type gas leakage alarm of claim 2, wherein the single chip microcomputer U1 is further connected with a touch screen interface J2, one end of a 35 pin connecting resistor R507, one end of a 36 pin connecting resistor R508, one end of a 37 pin connecting resistor R509, and one end of a 38 pin connecting R510 of the touch screen interface J2 are connected with one end of a triode Q1, the other end of the resistor R507, the other end of the resistor R508, the other end of the resistor R509, and the other end of the R510 are connected with a collector of the triode Q1, an emitter of the triode Q1 is grounded and a base of the triode Q2 is connected with a 47 pin of the single chip microcomputer U1, one end of a 24 pin connecting resistor R1 and one end of a capacitor C2 of the touch screen interface J2 are grounded, the other end of the capacitor C2 is grounded.
10. A weighing type gas leakage alarm device according to claim 2, wherein the single chip microcomputer U1 is further connected with an upper computer communication circuit, the upper computer communication circuit comprises an isolation power module U5, an optical coupler G1, an optical coupler G2 and an optical coupler G3, 2 pins of the isolation power module U5 are connected with one end of a capacitor C518, one end of a capacitor C6 and VCC, 1 pin of the isolation power module U5 is connected with the other end of the capacitor C518 and the other end of the capacitor C6 and is grounded, 4 pins of the isolation power module U5 are connected with a capacitor C303 and a capacitor C519 and outputs VCC1, 3 pins of the isolation power module U5 are connected with the other end of the capacitor C303 and the other end of the capacitor C519 and is grounded, 6 pins of the optical coupler G1 are connected with VCC, 4 pins are grounded, one end of a 5 pin connecting resistor R301 and one end of the 26 pin, 1 pin connecting resistor R1 and 3 pin connecting resistor R801, and the other end of the single chip microcomputer U1 is connected, the other end of the resistor R801 is connected with a pin 1 of a transceiver chip U6, a pin 1 of the optocoupler G2 is connected with a pin 3.3V and pin 4 for grounding, a pin 5 is connected with one end of a resistor R302 and pin 6 for connecting VCC1 with the other end of the resistor R302 and one end of a pin 3 for connecting resistor R802, the other end of the resistor R802 is connected with a pin 24 of the singlechip U1, the other end of the resistor R303 is connected with a base electrode of a triode Q1, a collector electrode of the triode Q1 is connected with a VCC1, one end of an emitter electrode connecting resistor R304 and pins 2 and 3 of the transceiver chip U6, the other end of the resistor R304 is grounded, a pin 1 of the optocoupler G3 is connected with a pin 3.3V and pin 4 for grounding, one end of a pin 5 for connecting resistor R8655 and one end of the pin 4 and pin 6 of the transceiver chip U6 are connected with a pin VCC1 and pin 3 pin for connecting resistor R803, the other end of the resistor R802, the other end of the, VCC1, electric capacity C520 other end ground connection, the host computer interface is connected respectively to transceiver chip U6's 6 feet and 7 feet.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010250444.6A CN111653066A (en) | 2020-04-01 | 2020-04-01 | Weighing type gas leakage alarm |
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| CN202010250444.6A CN111653066A (en) | 2020-04-01 | 2020-04-01 | Weighing type gas leakage alarm |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001043464A (en) * | 1999-07-29 | 2001-02-16 | Nohmi Bosai Ltd | Carbon dioxide fire extinguisher |
| CN2682402Y (en) * | 2002-10-16 | 2005-03-02 | 长春可靠消防工程有限公司 | Intelligent electronic leak detection alarm controller |
| CN208081707U (en) * | 2018-03-12 | 2018-11-13 | 徐哲妍 | A kind of fire extinguisher cabinet with leakage alarm function |
| CN208589125U (en) * | 2018-07-20 | 2019-03-08 | 潘泽 | Fire extinguisher remote monitoring system |
| CN109947018A (en) * | 2019-03-25 | 2019-06-28 | 安徽中科九炬智能科技股份有限公司 | A kind of lithium battery box fire prevention and control device |
| CN212135639U (en) * | 2020-04-01 | 2020-12-11 | 宿迁市计量测试所 | Weighing type gas leakage alarm |
-
2020
- 2020-04-01 CN CN202010250444.6A patent/CN111653066A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001043464A (en) * | 1999-07-29 | 2001-02-16 | Nohmi Bosai Ltd | Carbon dioxide fire extinguisher |
| CN2682402Y (en) * | 2002-10-16 | 2005-03-02 | 长春可靠消防工程有限公司 | Intelligent electronic leak detection alarm controller |
| CN208081707U (en) * | 2018-03-12 | 2018-11-13 | 徐哲妍 | A kind of fire extinguisher cabinet with leakage alarm function |
| CN208589125U (en) * | 2018-07-20 | 2019-03-08 | 潘泽 | Fire extinguisher remote monitoring system |
| CN109947018A (en) * | 2019-03-25 | 2019-06-28 | 安徽中科九炬智能科技股份有限公司 | A kind of lithium battery box fire prevention and control device |
| CN212135639U (en) * | 2020-04-01 | 2020-12-11 | 宿迁市计量测试所 | Weighing type gas leakage alarm |
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