CN201527568U - Automatic monitoring device for fire pools and tanks - Google Patents

Abstract

The utility model relates to an automatic monitoring device of a fire-fighting pool and a water tank, which belongs to the technical field of auto detecting alarm and comprises a water level sensor, a temperature sensor, an electrically operated valve, a flow switch and a main control part, wherein a solenoid valve adopts a jet pilot-operated solenoid valve utilizing micro motor to open/close driving in the interior thereof. The utility model has the advantages that the make-and-break and short circuit states of all connecting lines can be directly detected through the signal detection and processing of both the water level sensor and the temperature sensor, thereby effectively monitoring the parameters in the fire-fighting pool and water tank; the water level of the fire-fighting pool and water tank can be controlled by controlling and detecting the opening and the closing of the electrically operated valve, and all the state information can be input into the superior fire-fighting monitoring device, thereby effectively solving the problems of the fire-fighting pool and the water tank. And in addition, the utility model is highly real-time and reliable.

Description

Automatic monitoring device for fire pools and tanks

technical field

The utility model belongs to the technical field of automatic monitoring and alarming, in particular to an automatic monitoring device for fire-fighting pools and tanks.

Background technique

At present, fire-fighting pools and tanks are important links in the fire-fighting system. In current engineering applications, most of the monitoring devices using magnetic float sensors are used to monitor the water levels of fire-fighting pools and tanks. However, most of these monitoring devices have Internally, a reed switch is simply used to correspond to a magnetic float, which can only simply output a switch signal, but cannot effectively detect the short circuit and open circuit of the connection lines between these sensors and the device. The self-diagnosis and alarm of various failure conditions such as open circuit have become the general requirements of fire protection electronic equipment. The solenoid valves or electric valves used in such devices are generally powered by 24V or 220V voltage, the power supply lines are complicated, the construction cost is expensive, and once the strong electricity leaks, it is very easy to cause safety accidents. It also cannot be effectively integrated with the existing fire control system.

Contents of the invention

In view of the deficiencies in the prior art, the purpose of this utility model is an automatic monitoring device for fire-fighting pools and tanks, which obtains relevant water level information through a water level sensor, judges whether the water level is normal and whether the sensor connection line is short-circuited or disconnected, and at the same time outputs the corresponding The electric valve control signal is used to control whether to perform/stop water replenishment, and the corresponding water level, fault and alarm information are indicated through the on-site light indicating circuit, and the corresponding status information is output through the relay output interface circuit and the RS485 communication interface circuit; obtained through the temperature sensor The water temperature information of fire-fighting pools and tanks is used to judge the water temperature, and when the water temperature is lower than 4°C, an alarm signal is issued, and at the same time, the LED of the on-site light indication circuit sends out a light indication, and is output through the relay output interface circuit and the RS485 communication interface circuit corresponding status information.

The technical scheme of the utility model is realized as follows: the device includes a main control part, a water level sensor, a temperature sensor, an electric valve and a flow switch; wherein the main control part includes a pulse electric valve drive circuit, an electric valve state detection circuit, and a relay output interface circuit, RS485 communication interface circuit, on-site light indication circuit, temperature detection circuit, water level detection circuit, DC-DC conversion circuit and central processing unit, wherein the relay output interface circuit includes fault signal output circuit and alarm signal output relay interface circuit.

The connection of the device is: the control input end of the electric valve is connected to the control output end of the pulse electric valve drive circuit, the control input end of the pulse electric valve drive circuit is connected to the central processing unit; the output end of the flow switch is connected to the input of the state detection circuit of the electric valve The output end of the electric valve state detection circuit is connected to the central processing unit; the output end of the DC-DC conversion circuit is connected to the power supply module of the central processing unit; the output end of the water level sensor is connected to the input end of the water level detection circuit; the output end of the water level detection circuit Connect to the central processing unit; the output end of the temperature sensor is connected to the input end of the temperature detection circuit; the output end of the temperature detection circuit is connected to the central processing unit; the output end of the central processing unit is respectively connected to the input of the fault signal output circuit and the alarm signal output relay interface circuit terminal; the output terminal of the central processing unit is connected to the input terminal and output terminal of the RS485 communication interface circuit; the output terminal of the central processing unit is connected to the input terminal of the on-site light indicating circuit

Among them, the electric valve is a jet pilot electric valve, which is driven by a micro motor inside.

The working process of the device: the water level sensor and the temperature sensor are placed in the fire pool through the fixed bracket, and the electric valve is installed on the water supply pipe of the fire pool through the bracket. At the same time, a low water level warning is reported. At this time, the electric valve is opened and the water supply starts; when the minimum water level is reached, the low water level alarm output is terminated, but at this time the water supply is still continued. When the water supply level is stopped, the device detects a signal change and the electric valve Close and stop replenishing water; when the water level drops due to leakage and other reasons, until it reaches the replenishing water level, the device detects a signal change, the device outputs a replenishing water command, the electric valve opens, and replenishing water is performed again to ensure that the water level is not lower than the minimum water level. There is no water in the water supply pipe, or the water leakage rate of the pool or tank is faster than the water supply rate, causing the water level to be lower than the minimum water level, the device detects a signal change, and at this time the low water level alarm is output through the alarm signal relay interface circuit and RS485 communication interface circuit; When the water supply stop water level is reached, the water supply cannot be stopped. At this time, the water level will continue to rise. When it reaches the overflow alarm position, the device will detect the signal change, and the device will output through the RS485 communication interface circuit and the alarm signal output relay interface circuit. When the temperature is lower than the limit When the temperature is high, the detection signal of the temperature sensor will change. After the device detects the signal change and confirms it, it will output the alarm information through the RS485 communication interface circuit and the alarm signal output relay interface circuit. When all the external connection lines are disconnected or short-circuited, the device will detect the corresponding signal changes, and will output fault information through the RS485 communication interface circuit and the fault signal output relay interface circuit.

Advantage of the utility model:

Through the signal detection and processing of the water level sensor and temperature sensor, the on-off and short-circuit status of various connecting lines can be directly detected, and the parameter information of the fire-fighting pool and tank can be effectively monitored; the fire-fighting pool can be controlled by controlling and detecting the opening and closing of the electric valve , water level of the tank, and all state information can be input to the upper-level fire monitoring device, which effectively solves the monitoring of fire pools and tanks.

Description of drawings

Fig. 1 is the block diagram of circuit of the utility model fire-fighting pool, box automatic monitoring device;

Fig. 2 is a schematic diagram of the driving circuit of the pulse electric valve of the automatic monitoring device for fire-fighting pools and tanks of the present invention;

Fig. 3 is the schematic diagram of the electric valve state detection circuit of the fire-fighting pool and tank automatic monitoring device of the present utility model;

Fig. 4 is the schematic diagram of the alarm signal output relay interface of the utility model fire-fighting pool and box automatic monitoring device;

Fig. 5 is a schematic diagram of the fault signal output circuit of the fire-fighting pool and box automatic monitoring device of the present utility model;

Fig. 6 is the electrical principle diagram of the RS485 communication interface of the fire-fighting pool and box automatic monitoring device of the present utility model;

Fig. 7 is a schematic diagram of on-site light indicating electricity of the automatic monitoring device for fire-fighting pools and tanks of the present invention;

Fig. 8 is a schematic diagram of the temperature detection circuit of the fire-fighting pool and tank automatic monitoring device of the present invention;

Fig. 9 is a schematic diagram of the water level detection circuit of the fire-fighting pool and tank automatic monitoring device of the present invention;

Fig. 10 is a schematic diagram of the DC-DC conversion circuit of the automatic monitoring device for fire-fighting pools and tanks of the present invention;

Fig. 11 is an electrical schematic diagram of the central processor of the utility model fire-fighting pool and tank automatic monitoring device.

In the figure: 1 pulse electric valve drive circuit, 2 electric valve state detection circuit, 3 relay output interface circuit, 4RS485 communication interface circuit, 5 on-site light indication circuit, 6 temperature detection circuit, 7 water level detection circuit, 8DC-DC conversion circuit, 9 central processing unit, 10 temperature sensor, 11 water level sensor, 12 electric valve, 13 flow switch.

Detailed ways

The detailed structure of the automatic monitoring device for fire-fighting pools and tanks of the utility model will be described in conjunction with the embodiments.

As shown in Figure 1, the device includes a main control part, a water level sensor (11), a temperature sensor (10), an electric valve (12) and a flow switch (13); wherein the main control part includes a pulse electric valve drive circuit (1) , electric valve state detection circuit (2), relay output interface circuit (3), RS485 communication interface circuit (4), field light indicator circuit (5), temperature detection circuit (6), water level detection circuit (7), DC- The DC conversion circuit (8) and the central processing unit (9), the relay output interface circuit (3) include a fault signal output circuit and an alarm signal output relay interface circuit.

The connection of the device is: as shown in Figure 2, the control input terminal of the electric valve (12) is connected to the terminal J10 of the pulse electric valve drive circuit (1), and the voltage direction control port of the pulse electric valve drive circuit (1) is TURN OFF CON and TURN ONCON are connected to the TURN OFF CON and TURN ON CON ports of the central processing unit (9), and the power supply control port DCFOUTCON of the pulse electric valve drive circuit (1) is connected to the central processing unit (9) DCFOUTCON port; as shown in Figure 3 , the output end of the flow switch (13) is connected to the connection terminal J6 of the electric valve state detection circuit (2), the VIOUT power supply port of the electric valve state detection circuit (2) is connected to the VIO port of the central processing unit (9), and the electric valve state The signal of the ADIN21 port in the detection circuit (2) is delivered to the ADIN21 port of the central processing unit (9); as shown in Figure 10, the VIO power supply output port of the DC-DC conversion circuit (8) is connected to the VIO of the central processing unit (9) Port; As shown in Figure 9, the output end of water level sensor (11) connects the connection terminal J9 of water level detection circuit (7), and the VIO port of water level detection circuit (7) connects the VIO port of central processing unit (9), and water level The signal of the ADIN31 end in the detection circuit (7) is passed to the ADIN31 port of the central processing unit (9), and is used to detect the on, off and short circuit state of the water level sensor (11) and the central processing unit (9) connecting wire; As shown in Figure 8 Shown, the output end of temperature sensor (10) connects the wiring terminal J13 of temperature detection circuit (6), and the VIOUT port of temperature detection circuit (6) connects the VIO port of central processing unit (9), connects temperature detection circuit (6) The signal of ADIN41 port is delivered to the ADIN41 port of central processing unit (9); As shown in Figure 5, the FAULLTRDRV port of central processing unit (9) connects the FAULLTRDRV port of fault signal output circuit; As shown in Figure 4, central processing unit ( 9) The /LOWDRV port is connected to the /LOWDRV port of the alarm signal output relay interface circuit; as shown in Figure 6, the 485R/TC port of the central processing unit (9) is connected to the 485R/TC port of the RS485 communication interface circuit (4), RS485 communication The interface circuit (4) is used to upload the current monitoring status of the fire-fighting pool and the tank to the upper-level fire-fighting monitoring device; as shown in Figure 7, the LED0-LED7 ports of the central processing unit (9) are connected to the on-site light indicating circuit (5) The LED0-LED7 port of the on-site light indicating circuit (5) is used to indicate the operation of the device, device failure, low water level/low water temperature alarm, and four-level water level indication.

Wherein the electric valve (12) selects the jet pilot electric valve, and the model of choosing the jet pilot electric valve is SH-DFZ.G1/2 ', and a miniature motor is housed inside to drive.

The working process of the device: the water level sensor (11) and the temperature sensor (10) are placed in the fire pool through the fixed bracket, the electric valve is installed on the water supply pipe of the fire pool through the bracket, when the water level of the fire pool and the tank is lower than the minimum water level , the device sends out a water replenishment command, and at the same time reports a low water level warning. At this time, the electric valve (12) opens to start water replenishment; when the minimum water level is reached, the low water level alarm output is terminated, but at this time, water replenishment is still continued until the water replenishment level is stopped. , the device detects a signal change, the electric valve (12) is closed, and the water replenishment is stopped; when the water level drops due to leakage or other reasons, until the water replenishment level is reached, the device detects a signal change, the device outputs a water replenishment command, and the electric valve (12) opens , refill the water to ensure that the water level is not lower than the minimum water level. When there is no water in the water supply pipe, or the water leakage rate of the pool or tank is faster than the water supply rate, causing the water level to be lower than the minimum water level, the device detects a signal change. At this time, the water level The low alarm output relay interface circuit and RS485 communication interface circuit (4) through the alarm signal; when it reaches the water supply stop water level, the water supply cannot be stopped, and the water level will continue to rise at this time, and when it reaches the overflow alarm position, the device will detect the signal change, and the device will output Through the RS485 communication interface circuit (4) and the alarm signal output relay interface circuit, when the temperature is lower than the limited temperature, the detection signal of the temperature sensor (10) will change. The circuit (4) and the alarm signal output relay interface circuit output alarm information. When all external connection lines (except the power line) are disconnected or short-circuited, the device will detect the corresponding signal change, and will output alarm information through the RS485 communication interface circuit (4) and the alarm signal output relay interface circuit.

Claims (2)

1. a fire-water pond, case automatic monitoring device, it is characterized in that: this device comprises main control part, level sensor, temperature sensor, motorized valve and flow switch; Wherein main control part comprises pulse electric valve-driving circuit, motorized valve state detection circuit, relay output interface circuit, RS485 communication interface circuit, on-the-spot light indicating circuit, temperature sensing circuit, water level detection circuit, DC-DC change-over circuit and central processing unit, and its repeat circuit output interface circuit comprises fault-signal output circuit and alarm signal output relay interface circuit; The connection of this device is: the control input end of motorized valve connects the control output end of pulse electric valve-driving circuit, and the control input end of pulse electric valve-driving circuit connects central processing unit; The output terminal of flow switch connects the input end of motorized valve state detection circuit, and the output terminal of motorized valve state detection circuit connects central processing unit; The output terminal of DC-DC change-over circuit connects central processing unit needs supply module; The output terminal of level sensor connects the input end of water level detection circuit; The output terminal of water level detection circuit connects central processing unit; The output terminal of temperature sensor connects the input end of temperature sensing circuit; The output terminal of temperature sensing circuit connects central processing unit; The output terminal of central processing unit connects the input end of fault-signal output circuit and alarm signal output relay interface circuit respectively; The output terminal of central processing unit connects the input end and the output terminal of RS485 communication interface circuit; The output terminal of central processing unit connects the input end of on-the-spot light indicating circuit.

2. by the described a kind of fire-water pond of claim 1, case automatic monitoring device, it is characterized in that described motorized valve is a jet guide motorized valve, its inside is equipped with micromotor and is driven.

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