Control device based on simple spraying fire extinguishing system

Abstract

The utility model discloses a control device based on a simple spray fire extinguishing system. A plurality of control circuits comprise a communication unit, a single chip microcomputer control unit and a multi-path control unit which are sequentially connected according to a signal transmission direction; the communication unit is connected with an external controller and is used for receiving the control instruction and outputting a communication signal; the single-chip microcomputer control unit is used for receiving the communication signal output by the communication unit and driving the multi-path control unit to output a control signal to the outside; the control signal outputs a pulse signal or a 24V DC voltage signal to the outside and is used for controlling opening and closing of a plurality of electromagnetic valves in a pipe network so as to achieve conduction of a plurality of pipelines in the pipe network, water flow can be controlled to have different flowing conditions according to the output pulse signal or the 24V DC voltage signal, and if the output signal is the pulse signal, the water flow can be controlled to have different flowing conditions. If so, the electromagnetic valve is opened and closed according to the time interval of the pulse signal to realize interval flowing of water flow; and if a 24V DC voltage signal is output, the electromagnetic valve is always opened, and the water flow always flows.

Description

Technical Field

[0001] The utility model relates to the field of fire control, and specifically relates to a control device based on a simple sprinkler fire extinguishing system. Background Art

[0002] Generally, the sprinkler fire extinguishing systems on the market include various main fire-fighting facilities such as pipe networks, valves, closed sprinkler heads, fire pumps, etc. They can only break the sprinkler heads through the increase of the on-site environmental temperature, and then discharge water in an open mode to extinguish fires. This system has high costs and slow response, and is not applicable to small places such as outdoor electric vehicle sheds and hotels.

[0003] Correspondingly, the emergence of the simple sprinkler fire extinguishing system solves the deficiencies of the traditional automatic sprinkler system. Compared with the traditional sprinkler fire extinguishing system, the simple sprinkler fire extinguishing system has a simple structure, lower costs and is applicable to various small places. However, how to control the flow of water in the simple sprinkler fire extinguishing system has become a new problem, so it needs to be solved urgently. Content of the Utility Model

[0004] In order to avoid and overcome the technical problems existing in the prior art, the utility model provides a control device based on a simple sprinkler fire extinguishing system. The utility model realizes the control of the water flow in multiple pipe networks of the simple sprinkler fire extinguishing system through a control device based on the simple sprinkler fire extinguishing system.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A control device based on a simple sprinkler fire extinguishing system, wherein multiple control circuits include a communication unit, a single-chip microcomputer control unit and a multi-channel control unit that are sequentially connected in the signal transmission direction;

[0007] The communication unit is connected to an external controller and is used for receiving control instructions and outputting communication signals;

[0008] The single-chip microcomputer control unit is used for receiving the communication signals output by the communication unit and driving the multi-channel control unit to output control signals externally;

[0009] The control signals are used for controlling the opening and closing of multiple electromagnetic valves in the pipe network of the sprinkler fire extinguishing system.

[0010] As a further scheme of the utility model: the multi-channel control unit includes multiple control circuits. The input end of the control circuit is connected to the single-chip microcomputer control unit, and the output end of the control circuit is connected to the terminal block P1. The multi-channel control unit is connected to multiple electromagnetic valves in the pipe network through the terminal block P1, so that the circuit outputs control signals to the multiple electromagnetic valves;

[0011] The control circuit includes a first control circuit, a second control circuit, a third control circuit and a fourth control circuit;

[0012] Among them, the input end of the first control circuit receives the M_OUT1 signal sent by the single-chip microcomputer module, its output end outputs the OUT1 signal, and is connected to the 1-pin of the terminal block P1;

[0013] The input end of the second control circuit receives the M_OUT2 signal sent by the single-chip microcomputer module, its output end outputs the OUT2 signal, and is connected to the 2-pin of the terminal block P1;

[0014] The input end of the third control circuit receives the M_OUT3 signal sent by the single-chip microcomputer module, its output end outputs the OUT3 signal, and is connected to the 3-pin of the terminal block P1;

[0015] The input end of the fourth control circuit receives the M_OUT4 signal sent by the single-chip microcomputer module, its output end outputs the OUT4 signal, and is connected to the 4-pin of the terminal block P1.

[0016] As a further solution of the present utility model: the control circuit includes a triode and an optocoupler; the base of the triode is connected to the pin of the single-chip microcomputer chip U1 in the single-chip microcomputer unit through a control resistor, that is, the M_OUT1 signal or the M_OUT2 signal or the M_OUT3 signal or the M_OUT4 signal is input to the base of the triode through the control resistor;

[0017] The collector of the triode is connected to the negative pole of the light-emitting diode in the optocoupler; the positive pole of the light-emitting diode in the optocoupler is connected to one end of the current-limiting resistor, the other end of the current-limiting resistor is connected to the 5V VCC power supply, and the other end of the current-limiting resistor is also connected to one end of the filter capacitor, and the other end of the filter capacitor is grounded;

[0018] The collector of the photosensitive triode in the optocoupler is connected to the pin of the connection terminal P1 for outputting the OUT1 signal or the OUT2 signal or the OUT3 signal or the OUT4 signal; the collector of the photosensitive triode in the optocoupler is also connected to one end of the pull-up resistor, and the other end of the pull-up resistor is connected to the 24V DC power supply terminal; a resistor is connected between the collector and the emitter of the photosensitive triode in the optocoupler, and the emitter is grounded, and the resistor is used to filter out high-frequency interference and improve the stability of the first control circuit;

[0019] The emitter of the triode Q2 is grounded.

[0020] As a further solution of the present utility model: the control signal includes a pulse signal or a 24V DC voltage signal.

[0021] As a further solution of the present utility model: the control device further includes a power conversion unit, and the power conversion unit is used to convert the power supply voltage and supply power to the communication unit, the single-chip microcomputer control unit and the multi-channel control unit respectively. The power conversion unit uses a power conversion chip N1 of model B2405S.

[0022] As a further solution of the present utility model: The Vin pin of the power conversion chip N1 is connected to an external power line to provide a 24V DC voltage to the circuit;

[0023] The VIG pin is connected to an external ground wire GND;

[0024] A polarized filter capacitor C4 and a non-polarized filter capacitor C5 are connected between the Vin pin and the VIG pin;

[0025] The Vout pin is used to output a 5V VDD voltage to the communication unit, the single-chip microcomputer control unit, and the multi-channel control unit;

[0026] After the positive electrode of the polarized filter capacitor C6, one end of the non-polarized filter capacitor C3, and one end of the resistor R16 are sequentially connected between the Vout pin and the VOG pin in the signal transmission direction, a 5V VDD voltage is then output;

[0027] The VOG pin is connected to the negative electrode of the polarized filter capacitor C6, the other end of the non-polarized filter capacitor C3, and the other end of the resistor R16.

[0028] As a further solution of the present utility model: The 24V DC power supply terminal is sequentially connected to GND through a resistor R1 and a resistor R5 in the signal transmission direction to supply power to the communication unit. The communication unit includes a communication chip D1 of model SN75176, and optocouplers E1 and E2 of model PC817(D).

[0029] As a further solution of the present utility model: The RO pin of the communication chip D1 is connected to a resistor R4, and the other end of the resistor R4 is connected to the C pin of the optocoupler E1; The RO pin of the communication chip D1 is also connected to a pull-up resistor R3, the other end of the pull-up resistor R3 is connected to the 5V VDD voltage, and the other end of the pull-up resistor R3 is also connected to the A pin of the optocoupler E1;

[0030] After the RE pin and the DE pin of the communication chip D1 are connected, they are connected to a resistor R14, the other end of the resistor R14 is grounded, and after the RE pin and the DE pin of the communication chip D1 are connected, they are also connected to the emitter of the triode V1;

[0031] The DI pin of the communication chip D1 is grounded;

[0032] The VCC pin of communication chip D1 is connected to resistor R6, and the VCC pin of communication chip D1 is also connected to the 5V VDD voltage; the A pin of communication chip D1 is connected to resistor R8, and the other ends of resistor R6 and resistor R8 are connected and merged into a bus that is connected to pin 4 of interface X1 of the communication interface of model RS485. The other ends of resistor R6 and resistor R8 are connected and merged into a bus that is also connected to the positive pole of resistor R9;

[0033] The GND pin of communication chip D1 is connected to resistor R13, and the GND pin of communication chip D1 is also grounded; the B pin of communication chip D1 is connected to resistor R12, and the other ends of resistor R12 and resistor R13 are connected and merged into a bus that is connected to pin 1 of interface X1. The other ends of resistor R12 and resistor R13 are connected and merged into a bus that is also connected to the negative pole of resistor R9;

[0034] Pins 2 and 3 of interface X1 are left floating.

[0035] As a further solution of the present utility model: the NC pins of optocoupler E1 are all left floating;

[0036] The bus after connecting the VCC pin and EN pin of optocoupler E1 is connected between the series-connected resistors R1 and R5, and the bus after connecting the VCC pin and EN pin of optocoupler E1 is also connected to one end of resistor R2;

[0037] The Output pin of optocoupler E1 is connected to the RXD / P3.0 pin of microcontroller chip U1, that is, the RXD signal is input to the Output pin of the optocoupler. The Output pin of optocoupler E1 is also connected to the other end of resistor R2;

[0038] The GND pin of optocoupler E1 is grounded;

[0039] The NC pins of optocoupler E2 are all left floating;

[0040] The A pin of optocoupler E2 is connected between the series-connected resistors R1 and R5;

[0041] The C pin of optocoupler E2 is connected to the TXD / P3.1 of microcontroller chip U1 through resistor R10, that is, the TXD signal is input to the C pin of optocoupler E2 through resistor R10;

[0042] The VCC pin and EN pin of optocoupler E2 are connected and then connected to the 5V VCC power supply terminal. The VCC pin and EN pin of optocoupler E2 are connected and then also connected to the bus after connecting the collector of triode V1 and one end of resistor R7;

[0043] The Output pin of optocoupler E2 is connected to one end of resistor R11, the other end of resistor R11 is connected to the base of transistor V1, and the other end of resistor R11 is also connected to the other end of resistor R7;

[0044] A resistor R7 is connected between the collector and the base of transistor V1;

[0045] The GND pin of optocoupler E2 is grounded.

[0046] As a further solution of the present utility model: the single-chip microcomputer control unit includes a single-chip microcomputer chip U1 of model STC89C58RD;

[0047] Among them, the P1.5 pin of the single-chip microcomputer chip U1 is used to output the IN2 signal;

[0048] The P1.6 pin is used to output the IN3 signal;

[0049] The P1.7 pin is used to output the IN4 signal;

[0050] A 5V VCC signal, a reset capacitor C2 and a pull-down resistor R15 are sequentially connected to the RST pin in the signal transmission direction, and the other end of the pull-down resistor R15 is connected to the ground terminal GND;

[0051] The RXD / P3.0 pin is used to input the RXD signal;

[0052] The TXD / P3.1 pin is used to input the TXD signal;

[0053] The / P3.2 pin is used to input a 5V VCC signal;

[0054] The XTAL2 pin is connected to the crystal oscillator U2's X1 pin after connecting the starting capacitor C7, and the other end of the starting capacitor C7 is connected to the ground terminal GND;

[0055] The XTAL1 pin is connected to the crystal oscillator U2's X2 pin after connecting the starting capacitor C8, and the other end of the starting capacitor C8 is connected to the VSS pin of the single-chip microcomputer and then to the ground terminal GND;

[0056] The VDD pin outputs the VDD5V signal through the filtering capacitor C1, and the other end of the filtering capacitor C1 is connected to the ground terminal GND;

[0057] The P0.3 / AD4 pin is used to output the M_OUT4 signal;

[0058] The P0.5 / AD5 pin is used to output the M_OUT3 signal;

[0059] The P0.6 / AD6 pin is used to output the M_OUT2 signal;

[0060] The P0.7 / AD7 pin is used to output the M_OUT1 signal;

[0061] The remaining pins of the single-chip microcomputer chip U1 are left floating.

[0062] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0063] 1. The present utility model realizes the control of the water flow in the simple sprinkler fire extinguishing system through a control device based on the simple sprinkler fire extinguishing system.

[0064] 2. By controlling the single-chip microcomputer to change the signal output mode of the multi-channel control unit, the present utility model enables the control signal to output different forms of signals, so that the control signal finally outputs a pulse signal or a 24V DC voltage signal externally, for controlling the opening and closing of multiple solenoid valves in the pipe network, and realizes the control of the water flow in the simple sprinkler fire extinguishing system.

[0065] 3. The present utility model receives the alarm information of the external controller through the communication unit, and then outputs the control signal externally through the multi-channel control unit. Through the multi-channel control signals, the opening and closing of multiple solenoid valves in the simple sprinkler fire extinguishing system can be controlled, so as to realize the conduction of multiple pipelines in the pipe network. According to the output pulse signal or 24V DC voltage signal, the water flow can be controlled to have different flow conditions, and the control of water prevention and fire extinguishing in the simple sprinkler fire extinguishing system can be realized; if the single-chip microcomputer controls the output for a while and does not control the output for a while, the output is a pulse signal, and the solenoid valve opens and closes according to the time interval of the pulse signal, realizing the intermittent flow of the water flow; if the single-chip microcomputer always controls the output, the output is a 24V DC voltage signal, and the solenoid valve is always open and the water flow always flows.

[0066] 4. The present utility model uses the polar filtering capacitor C4, the polar filtering capacitor C6, the non-polar filtering capacitor C3 and the non-polar filtering capacitor C5 to filter the high-frequency and low-frequency interference in the power supply signal, making the DC5V voltage output by the power supply conversion unit more stable.

[0067] 5. The present utility model uses the single-chip microcomputer control unit to control the output of a pulse signal or a 24V DC voltage signal, so as to enable the multi-channel control unit to finally realize two control modes for the opening and closing of the solenoid valve.

[0068] 6. The present utility model uses the multi-channel control unit to be able to output multiple groups of control signals simultaneously, realizing the control of the opening and closing of multiple pipelines in the simple sprinkler fire extinguishing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0069] Figure 1 It is a schematic diagram of the principle of a control device based on a simple sprinkler fire extinguishing system in the present utility model.

[0070] Figure 2 This is the circuit schematic diagram of a power conversion unit based on a simple spray fire extinguishing system in the present utility model.

[0071] Figure 3 This is the circuit schematic diagram of a communication unit based on a simple spray fire extinguishing system in the present utility model.

[0072] Figure 4 This is the circuit schematic diagram of a single-chip microcomputer control unit based on a simple spray fire extinguishing system in the present utility model.

[0073] Figure 5 This is the circuit schematic diagram of a multi-channel control unit based on a simple spray fire extinguishing system in the present utility model.

[0074] Figure 6 This is the terminal block in a multi-channel control unit based on a simple spray fire extinguishing system in the present utility model. Specific embodiments

[0075] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0076] Please refer to Figures 1-6 , in the embodiments of the present utility model, a control device based on a simple spray fire extinguishing system, and multiple control circuits include a communication unit, a single-chip microcomputer control unit, and a multi-channel control unit that are sequentially connected in the signal transmission direction;

[0077] The communication unit is connected to an external controller and is used to receive a control instruction and output a communication signal;

[0078] The single-chip microcomputer control unit is used to receive the communication signal output by the communication unit and drive the multi-channel control unit to output a control signal externally;

[0079] The control signal outputs a pulse signal or a 24V DC voltage signal externally, which is used to control the opening and closing of multiple solenoid valves in the pipe network; it receives the alarm information from the external controller through the communication unit, and then outputs the control signal externally through the multi-channel control unit. Through the multi-channel control signals, the opening and closing of multiple solenoid valves in the simple sprinkler fire extinguishing system can be controlled, so as to realize the conduction of multiple pipelines in the pipe network. According to the output pulse signal or 24V DC voltage signal, the flow of water can be controlled to have different flow conditions, realizing the control of water prevention and fire extinguishing in the simple sprinkler fire extinguishing system; if the single-chip microcomputer controls the output for a while and does not control the output for a while, the output is a pulse signal, and the solenoid valve opens and closes according to the time interval of the pulse signal, realizing the intermittent flow of water; if the single-chip microcomputer always controls the output, the output is a 24V DC voltage signal, and the solenoid valve is always open and the water flows continuously.

[0080] Refer to Figure 2 :

[0081] The whole control device also includes a power conversion unit, which is connected to the communication unit, the single-chip microcomputer control unit and the multi-channel control unit at the same time, and is used to convert the power supply voltage and supply power to the communication unit, the single-chip microcomputer control unit and the multi-channel control unit. The power conversion unit uses a power conversion chip N1 with the model of B2405S to convert the input 24V DC voltage into 5V DC voltage and deliver it to the communication unit, the single-chip microcomputer control unit and the multi-channel control unit;

[0082] The power conversion unit includes a power conversion chip N1 with the model of B2405S.

[0083] The Vin pin of the power conversion chip N1 is connected to the external power supply line to provide 24V DC voltage for the whole circuit;

[0084] The VIG pin is connected to the external ground wire GND;

[0085] A polar filtering capacitor C4 and a non-polar filtering capacitor C5 are connected between the Vin pin and the VIG pin;

[0086] The Vout pin is used to output 5V VDD voltage to the communication unit, the single-chip microcomputer control unit and the multi-channel control unit;

[0087] After the positive pole of the polar filtering capacitor C6, one end of the non-polar filtering capacitor C3 and one end of the resistor R16 are connected in sequence between the Vout pin and the VOG pin according to the signal transmission direction, and then 5V VDD voltage is output;

[0088] The VOG pin is connected to the negative pole of the polar filtering capacitor C6, the other end of the non-polar filtering capacitor C3 and the other end of the resistor R16.

[0089] By using the polarized filter capacitor C4, the polarized filter capacitor C6, the non-polarized filter capacitor C3 and the non-polarized filter capacitor C5, it is possible to filter out high-frequency and low-frequency interferences in the power signal, making the 5V DC voltage output by the power conversion unit more stable.

[0090] Refer to Figure 3 :

[0091] The communication unit includes a communication chip D1 and an interface X1. Among them, the interface X1 uses a communication interface of model RS485. The communication unit is connected to an external controller through the interface X1 for receiving control instructions and performing data interaction.

[0092] The communication unit includes a communication chip D1 of model SN75176, and optocouplers E1 and E2 both of model PC817(D).

[0093] Among them, the RO pin of the communication chip D1 is connected to the resistor R4, and the other end of the resistor R4 is connected to the C pin of the optocoupler E1; the RO pin of the communication chip D1 is also connected to the pull-up resistor R3, the other end of the pull-up resistor R3 is connected to the 5V VDD voltage, and the other end of the pull-up resistor R3 is also connected to the A pin of the optocoupler E1.

[0094] The RE pin and the DE pin of the communication chip D1 are connected and then connected to the resistor R14, the other end of the resistor R14 is grounded, and the RE pin and the DE pin of the communication chip D1 are connected and then also connected to the emitter of the triode V1.

[0095] The DI pin of the communication chip D1 is grounded.

[0096] The VCC pin of the communication chip D1 is connected to the resistor R6, and the VCC pin of the communication chip D1 is also connected to the 5V VDD voltage; the A pin of the communication chip D1 is connected to the resistor R8, and the bus formed by connecting the other ends of the resistor R6 and the resistor R8 is connected to the 4th pin of the interface X1, and the bus formed by connecting the other ends of the resistor R6 and the resistor R8 is also connected to the positive pole of the resistor R9.

[0097] The GND pin of the communication chip D1 is connected to the resistor R13, and the GND pin of the communication chip D1 is also grounded; the B pin of the communication chip D1 is connected to the resistor R12, and the bus formed by connecting the other ends of the resistor R12 and the resistor R13 is connected to the 1st pin of the interface X1, and the bus formed by connecting the other ends of the resistor R12 and the resistor R13 is also connected to the negative pole of the resistor R9.

[0098] The 2nd pin and the 3rd pin of the interface X1 are left floating.

[0099] The 24V DC power supply terminal is connected to GND through resistor R1 and resistor R5 in sequence according to the signal transmission direction to supply power to the communication unit.

[0100] The NC pins of optocoupler E1 are all floating.

[0101] The bus after connecting the VCC pin and EN pin of optocoupler E1 is connected between resistor R1 and resistor R5 in series, and the bus after connecting the VCC pin and EN pin of optocoupler E1 is also connected to one end of resistor R2.

[0102] The Output pin of optocoupler E1 is connected to the RXD / P3.0 pin of microcontroller chip U1, that is, the RXD signal is output from the Output pin of the optocoupler to the RXD / P3.0 pin of microcontroller chip U1, and the Output pin of optocoupler E1 is also connected to the other end of resistor R2.

[0103] The GND pin of optocoupler E1 is grounded.

[0104] The NC pins of optocoupler E2 are all floating.

[0105] The A pin of optocoupler E2 is connected between resistor R1 and resistor R5 in series.

[0106] The C pin of optocoupler E2 is connected to the TXD / P3.1 of microcontroller chip U1 through resistor R10, that is, the TXD signal is input to the TXD / P3.1 pin of microcontroller chip U1 through resistor R10.

[0107] The VCC pin and EN pin of optocoupler E2 are connected to the 5V VCC power supply terminal after connection, and the bus after connecting the VCC pin and EN pin of optocoupler E2 is also connected to the bus after connecting the collector of triode V1 and one end of resistor R7.

[0108] The Output pin of optocoupler E2 is connected to one end of resistor R11, the other end of resistor R11 is connected to the base of triode V1, and the other end of resistor R11 is also connected to the other end of resistor R7.

[0109] The collector and base of triode V1 are connected through resistor R7.

[0110] The GND pin of optocoupler E2 is grounded.

[0111] Refer to Figure 4 :

[0112] The microcontroller control unit includes a microcontroller chip U1 of model STC89C58RD;

[0113] Among them, the P1.5 pin of microcontroller chip U1 is used to output the IN2 signal;

[0114] The P1.6 pin is used to output the IN3 signal;

[0115] The P1.7 pin is used to output the IN4 signal;

[0116] A 5V VCC signal, a reset capacitor C2, and a pull - down resistor R15 are sequentially connected to the RST pin in the signal transmission direction. The other end of the pull - down resistor R15 is connected to the ground terminal GND;

[0117] The RXD / P3.0 pin is used to input the RXD signal;

[0118] The TXD / P3.1 pin is used to input the TXD signal;

[0119] The / P3.2 pin is used to input a 5V VCC signal;

[0120] The XTAL2 pin is connected to the X1 pin of the crystal oscillator U2 after connecting the startup capacitor C7. The other end of the startup capacitor C7 is connected to the ground terminal GND;

[0121] The XTAL1 pin is connected to the X2 pin of the crystal oscillator U2 after connecting the startup capacitor C8. The other end of the startup capacitor C8 is connected to the VSS pin of the single - chip microcomputer and then to the ground terminal GND;

[0122] The VDD pin outputs the VDD5V signal after passing through the filtering capacitor C1. The other end of the filtering capacitor C1 is connected to the ground terminal GND;

[0123] The P0.3 / AD4 pin is used to output the M_OUT4 signal;

[0124] The P0.5 / AD5 pin is used to output the M_OUT3 signal;

[0125] The P0.6 / AD6 pin is used to output the M_OUT2 signal;

[0126] The P0.7 / AD7 pin is used to output the M_OUT1 signal;

[0127] The remaining pins of the single - chip microcomputer chip U1 are left floating.

[0128] Refer to Figures 5-6 :

[0129] The multi - path control unit includes multiple control circuits. In this embodiment, the multiple control circuits altogether include four control circuits, which are used to realize the opening and closing of the solenoid valves on the four pipelines of the connected simple sprinkler fire - extinguishing system, so as to realize the separate or simultaneous conduction of the four pipelines. The output ends of the four control circuits are connected through the terminal block P1 to externally output a 24V DC voltage signal or a pulse signal to realize the control of the water flow in the simple sprinkler fire - extinguishing system.

[0130] The input end of the control circuit is connected to the microcontroller chip U1 in the microcontroller control unit, and the output end of the control circuit is connected to the terminal block P1. The multi-channel control unit is connected to multiple solenoid valves in the pipe network through the terminal block P1, enabling the circuit to output control signals to the multiple solenoid valves. The control circuit includes an optocoupler for signal conversion. The control circuit includes a first control circuit, a second control circuit, a third control circuit, and a fourth control circuit. That is, the control circuit in this embodiment can simultaneously control the opening and closing of four pipelines in the pipe network of the simple fire sprinkler system connected thereto. By controlling the opening and closing of the solenoid valves on the pipelines, the pipelines are connected or disconnected from the municipal water supply system to complete the water supply in the simple fire sprinkler system and achieve the fire extinguishing function of the simple fire sprinkler system (it should be noted that the specific use of the opening and closing of the solenoid valves to complete the fire extinguishing function in the simple fire sprinkler system is prior art and not within the scope of improvement of this solution, so it will not be elaborated here).

[0131] Among them, the first control circuit includes an optocoupler U4 of model PC817(D).

[0132] According to the signal transmission direction, the base of the triode Q2 is connected to the P0.7 / AD7 pin of the microcontroller chip U1 through the control resistor R22, that is, the M_OUT1 signal is input to the base of the triode Q2 through the control resistor R22.

[0133] The collector of the triode Q2 is connected to the negative pole of the light-emitting diode in the optocoupler; the positive pole of the light-emitting diode in the optocoupler is connected to one end of the current-limiting resistor R19, the other end of the current-limiting resistor R19 is connected to the 5V VCC power supply, and the other end of the current-limiting resistor R19 is also connected to one end of the filter capacitor C10, and the other end of the filter capacitor C10 is grounded.

[0134] The collector of the photosensitive triode in the optocoupler is connected to the 1 pin of the connection terminal P1 for outputting the OUT1 signal; the collector of the photosensitive triode in the optocoupler is also connected to one end of the pull-up resistor R20, and the other end of the pull-up resistor R20 is connected to the 24V DC power supply terminal; a resistor C12 is connected between the collector and the emitter of the photosensitive triode in the optocoupler, and the emitter is grounded. The resistor C12 is used to filter out high-frequency interference and improve the stability of the first control circuit.

[0135] The emitter of the triode Q2 is grounded.

[0136] Among them, the second control circuit includes an optocoupler U6 of model PC817(D).

[0137] According to the signal transmission direction, the base of the triode Q4 is connected to the P0.6 / AD6 pin of the microcontroller chip U1 through the control resistor R28, that is, the M_OUT2 signal is input to the base of the triode Q4 through the control resistor R28.

[0138] The collector of triode Q4 is connected to the negative electrode of the light-emitting diode in the optocoupler; the positive electrode of the light-emitting diode in the optocoupler is connected to one end of current-limiting resistor R25, the other end of current-limiting resistor R25 is connected to the 5V VCC power supply, and the other end of current-limiting resistor R25 is also connected to one end of filter capacitor C14, and the other end of filter capacitor C14 is grounded.

[0139] The collector of the photosensitive triode in the optocoupler is connected to pin 2 of connection terminal P1 for outputting the OUT2 signal; the collector of the photosensitive triode in the optocoupler is also connected to one end of pull-up resistor R26, and the other end of pull-up resistor R26 is connected to the 24V DC power supply terminal; a resistor C16 is connected between the collector and the emitter of the photosensitive triode in the optocoupler, and the emitter is grounded. Resistor C16 is used to filter out high-frequency interference and improve the stability of the first control circuit.

[0140] The emitter of triode Q4 is grounded.

[0141] Among them, the third control circuit includes an optocoupler U3 of model PC817(D);

[0142] According to the signal transmission direction, the base of triode Q1 is connected to the P0.5 / AD5 pin of microcontroller chip U1 through control resistor R21, that is, the M_OUT3 signal is input to the base of triode Q1 through control resistor R21.

[0143] The collector of triode Q1 is connected to the negative electrode of the light-emitting diode in the optocoupler; the positive electrode of the light-emitting diode in the optocoupler is connected to one end of current-limiting resistor R17, the other end of current-limiting resistor R17 is connected to the 5V VCC power supply, and the other end of current-limiting resistor R17 is also connected to one end of filter capacitor C9, and the other end of filter capacitor C9 is grounded.

[0144] The collector of the photosensitive triode in the optocoupler is connected to pin 3 of connection terminal P1 for outputting the OUT3 signal; the collector of the photosensitive triode in the optocoupler is also connected to one end of pull-up resistor R18, and the other end of pull-up resistor R18 is connected to the 24V DC power supply terminal; a resistor C11 is connected between the collector and the emitter of the photosensitive triode in the optocoupler, and the emitter is grounded. Resistor C11 is used to filter out high-frequency interference and improve the stability of the first control circuit.

[0145] The emitter of triode Q1 is grounded.

[0146] Among them, the fourth control circuit includes an optocoupler U5 of model PC817(D);

[0147] According to the transmission direction of the signal, the base of the triode Q3 is connected to the P0.3 / AD4 pin of the single-chip microcomputer chip U1 through the control resistor R27, that is, the M_OUT4 signal is input to the base of the triode Q3 through the control resistor R27.

[0148] The collector of the triode Q3 is connected to the negative electrode of the light-emitting diode in the optocoupler; the positive electrode of the light-emitting diode in the optocoupler is connected to one end of the current-limiting resistor R23, the other end of the current-limiting resistor R23 is connected to the 5V VCC power supply, and the other end of the current-limiting resistor R23 is also connected to one end of the filter capacitor C13, and the other end of the filter capacitor C13 is grounded.

[0149] The collector of the photosensitive triode in the optocoupler is connected to the 4th pin of the connection terminal P1 for outputting the OUT4 signal; the collector of the photosensitive triode in the optocoupler is also connected to one end of the pull-up resistor R24, and the other end of the pull-up resistor R24 is connected to the 24V DC power supply terminal; a resistor C15 is connected between the collector and the emitter of the photosensitive triode in the optocoupler, and the emitter is grounded. The resistor C15 is used to filter out high-frequency interference and improve the stability of the first control circuit.

[0150] The emitter of the triode Q3 is grounded, and the 5th and 6th pins of the connection terminal P1 are both connected to the ground terminal GND.

[0151] Through the connection terminal P1, 24V DC voltage signals or pulse signals of multiple control circuits can be output separately or simultaneously to realize the control of different opening and closing modes of the solenoid valve.

[0152] Certainly, for those skilled in the art, the present utility model is not limited to the details of the above exemplary embodiments, but also includes the same or similar structures that can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0153] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0154] The technologies, shapes, and structures not described in detail in the present utility model are all well-known technologies.

Claims

1. A control device based on a simple sprinkler fire extinguishing system, characterized in that, The multiple control circuits include a communication unit, a single-chip microcomputer control unit, and a multi-channel control unit that are connected in sequence according to the signal transmission direction; The communication unit is connected to an external controller and is used to receive control instructions and output communication signals; The single-chip microcomputer control unit is used to receive the communication signals output by the communication unit and drive the multi-channel control unit to output control signals externally; The control signals are used to control the opening and closing of multiple solenoid valves in the pipeline network of the sprinkler fire extinguishing system.

2. The control device based on a simple sprinkler fire extinguishing system according to claim 1, characterized in that, The multi-channel control unit includes multiple control circuits. The input end of the control circuit is connected to the single-chip microcomputer control unit, and the output end of the control circuit is connected to the terminal block P1. The multi-channel control unit is connected to multiple solenoid valves in the pipeline network through the terminal block P1, so that the circuit outputs control signals to multiple solenoid valves; The control circuit includes a first control circuit, a second control circuit, a third control circuit, and a fourth control circuit; Among them, the input end of the first control circuit receives the M_OUT1 signal sent by the single-chip microcomputer module, its output end outputs the OUT1 signal, and is connected to the 1st pin of the terminal block P1; The input end of the second control circuit receives the M_OUT2 signal sent by the single-chip microcomputer module, its output end outputs the OUT2 signal, and is connected to the 2nd pin of the terminal block P1; The input end of the third control circuit receives the M_OUT3 signal sent by the single-chip microcomputer module, its output end outputs the OUT3 signal, and is connected to the 3rd pin of the terminal block P1; The input end of the fourth control circuit receives the M_OUT4 signal sent by the single-chip microcomputer module, its output end outputs the OUT4 signal, and is connected to the 4th pin of the terminal block P1.

3. The control device based on the simple sprinkler fire extinguishing system according to claim 2, characterized in that, The control circuit includes a triode and an optocoupler; the base of the triode is connected to the pin of the single-chip microcomputer chip U1 in the single-chip microcomputer unit through a control resistor, that is, the M_OUT1 signal or the M_OUT2 signal or the M_OUT3 signal or the M_OUT4 signal is input to the base of the triode through the control resistor; The collector of the triode is connected to the negative electrode of the light-emitting diode in the optocoupler; the positive electrode of the light-emitting diode in the optocoupler is connected to one end of the current-limiting resistor, the other end of the current-limiting resistor is connected to the 5V VCC power supply, and the other end of the current-limiting resistor is also connected to one end of the filter capacitor, and the other end of the filter capacitor is grounded; The collector of the photosensitive triode in the optocoupler is connected to the pin of the connection terminal P1 and is used to output the OUT1 signal or the OUT2 signal or the OUT3 signal or the OUT4 signal; the collector of the photosensitive triode in the optocoupler is also connected to one end of the pull-up resistor, and the other end of the pull-up resistor is connected to the 24V DC power supply terminal; a resistor is connected between the collector and the emitter of the photosensitive triode in the optocoupler, and the emitter is grounded. The resistor is used to filter out high-frequency interference and improve the stability of the first control circuit; The emitter of the triode Q2 is grounded.

4. The control device based on a simple sprinkler fire extinguishing system according to claim 1, characterized in that, The control signals include pulse signals or 24V DC voltage signals.

5. The control device based on a simple sprinkler fire extinguishing system according to claim 1, wherein The control device further includes a power conversion unit. The power conversion unit is used to convert the power supply voltage and supply power to the communication unit, the single-chip microcomputer control unit, and the multi-channel control unit respectively. The power conversion unit uses a power conversion chip N1 of model B2405S.

6. The control device based on a simple sprinkler fire extinguishing system according to claim 5, characterized in that, The Vin pin of the power conversion chip N1 is connected to an external power line to provide a 24V DC voltage to the circuit; The VIG pin is connected to an external ground wire GND; A polarizing filter capacitor C4 and a non-polarizing filter capacitor C5 are connected between the Vin pin and the VIG pin; The Vout pin is used to output a 5V VDD voltage to the communication unit, the microcontroller control unit, and the multi-channel control unit; After the positive electrode of the polarizing filter capacitor C6, one end of the non-polarizing filter capacitor C3, and one end of the resistor R16 are sequentially connected in the signal transmission direction between the Vout pin and the VOG pin, a 5V VDD voltage is then output; The VOG pin is connected to the negative electrode of the polarizing filter capacitor C6, the other end of the non-polarizing filter capacitor C3, and the other end of the resistor R16.

7. The control device based on a simple sprinkler fire extinguishing system according to claim 1, characterized in that, The 24V DC power supply terminal is sequentially connected to GND through the resistor R1 and the resistor R5 in the signal transmission direction to supply power to the communication unit. The communication unit includes a communication chip D1 of model SN75176, and optocouplers E1 and E2 of model PC817(D).

8. The control device based on a simple sprinkler fire extinguishing system according to claim 7, characterized in that, The RO pin of the communication chip D1 is connected to the resistor R4, and the other end of the resistor R4 is connected to the C pin of the optocoupler E1; the RO pin of the communication chip D1 is also connected to the pull-up resistor R3, and the other end of the pull-up resistor R3 is connected to the 5V VDD voltage. The other end of the pull-up resistor R3 is also connected to the A pin of the optocoupler E1; After the RE pin and the DE pin of the communication chip D1 are connected, they are connected to the resistor R14, and the other end of the resistor R14 is grounded. After the RE pin and the DE pin of the communication chip D1 are connected, they are also connected to the emitter of the triode V1; The DI pin of the communication chip D1 is grounded; The VCC pin of the communication chip D1 is connected to the resistor R6, and the VCC pin of the communication chip D1 is also connected to the 5V VDD voltage; the A pin of the communication chip D1 is connected to the resistor R8. After the other end of the resistor R6 and the other end of the resistor R8 are connected and merged, the bus is connected to the 4th pin of the interface X1 of the communication interface of model RS485. After the other end of the resistor R6 and the other end of the resistor R8 are connected and merged, the bus is also connected to the positive electrode of the resistor R9; The GND pin of the communication chip D1 is connected to the resistor R13, and the GND pin of the communication chip D1 is also grounded; the B pin of the communication chip D1 is connected to the resistor R12. After the other end of the resistor R12 and the other end of the resistor R13 are connected and merged, the bus is connected to the 1st pin of the interface X1. After the other end of the resistor R12 and the other end of the resistor R13 are connected and merged, the bus is also connected to the negative electrode of the resistor R9; The 2nd and 3rd pins of the interface X1 are left floating.

9. The control device based on a simple sprinkler fire extinguishing system according to claim 6, wherein The NC pins of the optocoupler E1 are all left floating; After the VCC pin and the EN pin of the optocoupler E1 are connected, the bus is connected between the series-connected resistors R1 and R5. After the VCC pin and the EN pin of the optocoupler E1 are connected, the bus is also connected to one end of the resistor R2; The Output pin of optocoupler E1 is connected to the RXD / P3.0 pin of microcontroller chip U1, that is, the RXD signal is input to the Output pin of the optocoupler. The Output pin of optocoupler E1 is also connected to the other end of resistor R2. The GND pin of optocoupler E1 is grounded. The NC pins of optocoupler E2 are all floating. The A pin of optocoupler E2 is connected between resistor R1 and resistor R5 in series. The C pin of optocoupler E2 is connected to the TXD / P3.1 of microcontroller chip U1 through resistor R10, that is, the TXD signal is input to the C pin of optocoupler E2 through resistor R10. The VCC pin and EN pin of optocoupler E2 are connected and then connected to the 5V VCC power supply terminal. After the VCC pin and EN pin of optocoupler E2 are connected, they are also connected to the bus after the collector of transistor V1 and one end of resistor R7 are connected. The Output pin of optocoupler E2 is connected to one end of resistor R11. The other end of resistor R11 is connected to the base of transistor V1, and the other end of resistor R11 is also connected to the other end of resistor R7. A resistor R7 is connected between the collector and base of transistor V1. The GND pin of optocoupler E2 is grounded.

10. The control device based on a simple spray fire extinguishing system according to claim 1, characterized in that, The microcontroller control unit includes a microcontroller chip U1 of model STC89C58RD. Among them, the P1.5 pin of microcontroller chip U1 is used to output the IN2 signal. The P1.6 pin is used to output the IN3 signal. The P1.7 pin is used to output the IN4 signal. A 5V VCC signal, a reset capacitor C2 and a pull-down resistor R15 are sequentially connected to the RST pin in the signal transmission direction. The other end of the pull-down resistor R15 is connected to the ground terminal GND. The RXD / P3.0 pin is used to input the RXD signal. The TXD / P3.1 pin is used to input the TXD signal. The pin is used to input the 5V VCC signal; The XTAL2 pin is connected to the X1 pin of crystal oscillator U2 after connecting the starting capacitor C7. The other end of the starting capacitor C7 is connected to the ground terminal GND. The XTAL1 pin is connected to the X2 pin of crystal oscillator U2 after connecting the starting capacitor C8. The other end of the starting capacitor C8 is connected to the VSS pin of the microcontroller and then connected to the ground terminal GND. The VDD pin outputs the VDD5V signal after passing through the filtering capacitor C1. The other end of the filtering capacitor C1 is connected to the ground terminal GND. The P0.3 / AD4 pin is used to output the M_OUT4 signal. The P0.5 / AD5 pin is used to output the M_OUT3 signal. The P0.6 / AD6 pin is used to output the M_OUT2 signal. The P0.7 / AD7 pin is used to output the M_OUT1 signal. The remaining pins of microcontroller chip U1 are floating.

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