CN210134977U - Infrared induction type air door alarm controller for coal mine - Google Patents
Infrared induction type air door alarm controller for coal mine Download PDFInfo
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- CN210134977U CN210134977U CN201921010984.6U CN201921010984U CN210134977U CN 210134977 U CN210134977 U CN 210134977U CN 201921010984 U CN201921010984 U CN 201921010984U CN 210134977 U CN210134977 U CN 210134977U
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Abstract
The utility model discloses a colliery infrared induction type air door alarm controller, including power module, infrared induction module, time delay module and on-off control module, the output of infrared induction module is connected with the input of time delay module, and the output of time delay module is connected with the input of on-off control module, and power module supplies power for infrared induction module, time delay module and on-off control module respectively; the infrared induction module comprises an oscillator, an infrared receiving circuit, an infrared transmitting circuit, a frequency selecting circuit and a shaping circuit, wherein the output end of the oscillator is connected with the input end of the infrared transmitting circuit, the output end of the infrared transmitting circuit and the output end of the infrared receiving circuit are both connected with the input end of the frequency selecting circuit, and the output end of the frequency selecting circuit is connected with the input end of the shaping circuit; the utility model has the advantages that: the utility model discloses a colliery infrared induction formula air door alarm controller can not appear that alarm module is long to be sounded or not sounded, ensures coal mine safety's advantage.
Description
Technical Field
The utility model relates to a coal mine safety field, more specifically relates to colliery infrared induction type air door alarm control ware.
Background
Many underground coal mine ventilation systems in China are complex, ventilation facilities are numerous, the management work difficulty is high, and in the ventilation facilities, an air door is one of indispensable ventilation facilities. The coal mine safety regulations state that at least two normally closed dampers must be installed at some point in the underground roadway. When vehicles and pedestrians pass through, one fan is opened, the other fan is closed, and the opening at the same time is forbidden. In order to prevent the air door from being opened by a person outside the other door after the one door is opened, and thus, the air door is short-circuited by wind current or the person is crowded and injured, the air door opening prompting and alarming device is required to be arranged outside the two doors.
At present, the underground coal mine air door alarm device adopts an alarm system consisting of a permanent strong magnet, a reed switch, a voice alarm and other equipment. The working principle is that when the strong magnet is close to the reed pipe, the normally closed contact of the reed pipe is influenced by the magnetic field, and the contact is opened. When the distance between the strong magnet and the reed switch is larger than 5mm, the reed switch is separated from the influence of the magnetic field, the contact is closed, the control circuit of the alarm is connected, and the person outside the opposite air door is prompted to open the air door. The air door alarm in the mode brings certain guarantee for underground safe production. However, in the long-term use process, the mode that the reed switch controls the alarm is found to have certain problems. If the installation lines are multiple, the wiring is complex, the contact of the reed switch is oxidized, the movable metal arm is fatigued and adhered, and the like, the alarm is easy to sound for a long time or not.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the air door alarm device easily causes the long sound of alarm or the not problem of sounding under the prior art colliery.
The utility model discloses a solve above-mentioned technical problem through following technical scheme: the coal mine infrared induction type air door alarm controller comprises a power supply module, an infrared induction module, a time delay module and a switch control module, wherein the output end of the infrared induction module is connected with the input end of the time delay module, the output end of the time delay module is connected with the input end of the switch control module, and the power supply module is used for supplying power to the infrared induction module, the time delay module and the switch control module respectively;
the infrared induction module comprises an oscillator, an infrared receiving circuit, an infrared transmitting circuit, a frequency selecting circuit and a shaping circuit, the infrared receiving circuit is in communication connection with the infrared transmitting circuit, the output end of the oscillator is connected with the input end of the infrared transmitting circuit, the output end of the infrared transmitting circuit and the output end of the infrared receiving circuit are both connected with the input end of the frequency selecting circuit, and the output end of the frequency selecting circuit is connected with the input end of the shaping circuit.
The first air door and the second air door are arranged oppositely, a coal mine infrared induction type air door alarm controller is installed on a door frame of the first air door, and a coal mine infrared induction type air door alarm controller is also installed on a door frame of the second air door.
Preferably, the power module comprises a pin bank J2, a diode D5, a resistor R7, a capacitor C2 and a capacitor C4, the first pin and the second pin of the pin bank J2 are indirectly connected with a power supply V1, the first pin of the pin bank J2 is connected to ground, the second pin of the pin bank J2 is connected to the anode of a diode D5, the cathode of the diode D5 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to one end of the capacitor C2 and one end of the capacitor C4, and the other end of the capacitor C2 and the other end of the capacitor C4 are connected to ground. Wherein the capacitor C2 and the capacitor C4 are the filtering function, so that the circuit is more stable. The diode D5 can prevent the reverse polarity of the power supply, and ensure the safety of the circuit.
Preferably, the oscillator comprises a resistor R10, a diode D6, a resistor R11, a capacitor C5 and a third Schmitt trigger part U1C, wherein one end of the resistor R10 is connected with the anode of a diode D6, an eighth pin and a ninth pin of the third Schmitt trigger part U1C are connected together and connected with the anode of a diode D6, and one end of the capacitor C5 is connected with the eighth pin and the ninth pin of the third Schmitt trigger part U1C; the other end of the resistor R10, the other end of the resistor R11 and the tenth pin of the Schmitt trigger third portion U1C are connected together. The oscillator outputs a pulse signal from the tenth pin of the schmitt trigger third section U1C to the next stage circuit.
Preferably, the infrared emitting circuit includes a resistor R12, a transistor Q4, a resistor R9, and an infrared emitting tube D2, one end of the resistor R12 is connected to the tenth pin of the schmitt trigger third portion U1C, the other end of the resistor R12 is connected to the base of the transistor Q4, the emitter of the transistor Q4 is connected to the power VDD, the collector of the transistor Q4 is connected to one end of the resistor R9, the other end of the resistor R9 is connected to the anode of the infrared emitting tube D2, and the cathode of the infrared emitting tube D2 is connected to the other end of the capacitor C5. A pulse signal output from a tenth pin of the schmitt trigger third part U1C is amplified by the triode Q4 and drives the infrared transmitting tube D2 to transmit an infrared signal to the space, if the signal is not blocked by an obstacle, the infrared receiving tube D1 cannot receive the signal, so that the following circuit does not work; when an obstacle exists in front of the infrared transmitting tube D2, the transmitted infrared signal is transmitted back by the obstacle and is received by the infrared receiving tube D1, and a subsequent circuit is conducted.
Preferably, the infrared receiving circuit comprises a resistor R1, a resistor R2, a capacitor C1, a transistor Q1, a transistor Q2, an infrared receiving tube D1 and a resistor R3, wherein one end of the resistor R1 is connected with one end of the resistor R2, one end of the capacitor C1 is connected with the other end of the resistor R1, and the other end of the capacitor C1 is connected with the other end of the resistor R2; the anode of the infrared receiving tube D1 is connected with one end of a capacitor C1, the base of a triode Q1 is connected with the other end of the capacitor C1, the collector of the triode Q1 is connected with one end of a resistor R3, the other end of the resistor R3 is grounded, and the cathode of the infrared receiving tube D1 is connected with the other end of the resistor R3; the emitter of the triode Q1 is connected with the base of the triode Q2, and the emitter of the triode Q2 is connected with one end of the resistor R2; the collector of the triode Q2 is connected with one end of the capacitor C2. After the infrared receiving tube D1 receives the signal transmitted by the infrared transmitting tube D2, the received signal is amplified by the triode Q1 and the triode Q2, and finally the amplified infrared signal is output at the end of the resistor R3.
Preferably, the frequency selection circuit comprises a schmitt trigger first part U1A and a resistor R4, a collector of the transistor Q2 and a collector of the transistor Q1 are both connected to a first pin of the schmitt trigger first part U1A, a collector of the transistor Q4 is connected to a second pin of the schmitt trigger first part U1A, and one end of the resistor R4 is connected to a third pin of the schmitt trigger first part U1A. The resistor R3 end outputs amplified infrared signals, and frequency selection is carried out on the infrared signals by the first part U1A of the Schmitt trigger.
Preferably, the shaping circuit comprises a fourth schmitt trigger part U1D, a resistor R13 and a diode D7, wherein the cathode of the diode D7 is connected to the other end of the resistor R4, the anode of the diode D7 is connected to one end of the resistor R13, and the other end of the resistor R13 is connected to the power supply VDD; and the second pin and the third pin of the fourth part U1D of the Schmitt trigger are both connected with the anode of the diode D7. The signal frequency-selected by the first section U1A of the schmitt trigger is shaped by the shaping circuit of the fourth section U1D of the schmitt trigger and then output at the eleventh pin of the fourth section U1D of the schmitt trigger.
Preferably, the delay module includes a resistor R5, an adjustable resistor VR1, a capacitor C3, and a diode D8, an anode of the diode D8 is connected to the eleventh pin of the fourth part U1D of the schmitt trigger, a cathode of the diode D8 is connected to one end of the capacitor C3, one end of the capacitor C3 is connected to one end of the resistor R5, the other end of the resistor R5 is connected to one end of the adjustable resistor VR1, the other end of the adjustable resistor VR1 is connected to the other end of the capacitor C3, and the other end of the capacitor C3 is grounded; the other end of the adjustable resistor VR1 is connected with the other end of the capacitor C3. The adjustable resistor VR1 can be adjusted to adjust the delay time after each action, the utility model has adjustable delay time in the range of 0-40S, and the delay time is slightly different because each element parameter has certain error. The arrangement of the delay module avoids frequent circuit actions caused by the fact that the air door is not related to tightness or the air door is opened for a short time, and the circuit only acts when the air door is completely opened through the arrangement of the delay module, so that long-time sound or mistaken sound of the alarm module is avoided.
Preferably, the switch control module comprises a schmitt trigger second part U1B, a resistor R6, a transistor Q3, a resistor R14, a resistor R15, a transistor Q5, a resistor R8, a light emitting diode D3, a diode D4 and a relay, wherein the relay comprises a coil K2 and a normally-open contact K1, a fifth pin and a sixth pin of the schmitt trigger second part U1B are both connected to one end of the resistor R5, a fourth pin of the schmitt trigger second part U1B is connected to one end of the resistor R6, the other end of the resistor R6 is connected to a base of the transistor Q3, a collector of the transistor Q3 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to a cathode of the infrared emitter D2; the emitter of the triode Q3 is connected with a power supply VDD, the base of the triode Q5 is connected with the connecting line of a resistor R15 of a resistor R14, and the emitter of the triode Q5 is connected with the other end of the resistor R15 and is grounded; the collector of the triode Q5 is connected with the anode of the diode D4, the cathode of the diode D4 is connected with one end of the resistor R8, the other end of the resistor R8 is connected with the anode of the light-emitting diode D3, one end of the cathode connection coil K2 of the light-emitting diode D3, and the other end of the coil K2 is connected with the cathode of the diode D4 and connected with the connecting wire of the pin bank J2 and the anode of the diode D5. If the infrared receiving tube D1 receives a signal, a delayed low level signal is finally output at the fourth pin of the schmitt trigger second part U1B, so that the triode Q3 and the triode Q5 are turned on, the coil K2 is powered, the normally closed contact K1 is pulled in, the light emitting diode D3 is a relay working state indicator light, and when a loop where the relay is located is turned on, the light emitting diode D3 emits light to indicate that the circuit is turned on.
Preferably, infrared induction type air door alarm controller still includes alarm module, alarm module includes controller, first normally closed contact and second normally closed contact, and first normally closed contact and second normally closed contact are connected with the controller respectively, first normally closed contact is connected with the both ends of the normally open contact of the colliery infrared induction type air door alarm controller of installation on the door frame of first air door and first normally closed contact with the normally open contact is a set of linkage contact, the normally open contact of second normally closed contact and the colliery infrared induction type air door alarm controller of installation on the second air door is connected, and when first normally closed contact and second normally closed contact are all closed, the controller receives colliery infrared induction type air door alarm controller's signal on the first air door and colliery infrared induction type air door alarm controller's signal on the second air door simultaneously, the alarm module acts to generate voice alarm.
Compared with the prior art, the utility model has the following advantages: the utility model discloses a through installing infrared emission pipe D2 on the door frame, whether the infrared ray signal that sends is by the air door reflection of closing, judges that the place ahead air door closes or opens, when two air doors are opened simultaneously, triggers alarm module action and sends audio alert. The feedback signal is amplified to drive the relay to act, and the normally open contact K1 of the relay is used for controlling the voice alarm of the alarm module. After the infrared induction type air door alarm controller is adopted, the switching voltage and the current value of the normally open contact K1 are larger than those of a reed switch contact in the prior art, the service life of the contact is longer than that of the reed switch contact, the state of no sound or long sound can not occur due to the fault of the normally open contact, and the work of the whole circuit can be triggered only through the infrared induction module, so that the alarm module responds; the design of the time delay module also avoids circuit misoperation caused by mistaken opening of the air door or opening of a gap, thereby avoiding mistaken sound or long sound of the alarm module; additionally, the utility model discloses a relay contact closure, open utilize the reaction force of spring to return original position, make movable contact and original stationary contact actuation, avoid taking place in the tongue tube and move the fatigue phenomenon that loses elasticity and cause the contact not actuation of metal arm.
Drawings
Fig. 1 is a block diagram of a coal mine infrared induction type air door alarm controller provided in an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of the infrared induction type air door alarm controller for coal mine provided by the embodiment of the utility model.
Detailed Description
The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, the coal mine infrared induction type air door alarm controller is a structural block diagram and comprises a power module, an infrared induction module, a delay module and a switch control module, wherein an output end of the infrared induction module is connected with an input end of the delay module, an output end of the delay module is connected with an input end of the switch control module, and the power module respectively supplies power to the infrared induction module, the delay module and the switch control module;
the infrared induction module comprises an oscillator, an infrared receiving circuit, an infrared transmitting circuit, a frequency selecting circuit and a shaping circuit, the infrared receiving circuit is in communication connection with the infrared transmitting circuit, the output end of the oscillator is connected with the input end of the infrared transmitting circuit, the output end of the infrared transmitting circuit and the output end of the infrared receiving circuit are both connected with the input end of the frequency selecting circuit, and the output end of the frequency selecting circuit is connected with the input end of the shaping circuit. The first air door and the second air door are arranged oppositely, a coal mine infrared induction type air door alarm controller is installed on a door frame of the first air door, and a coal mine infrared induction type air door alarm controller is also installed on a door frame of the second air door.
Fig. 2 is a schematic circuit diagram of the infrared induction type coal mine ventilation door alarm controller, and the components of the modules and the connection relationship between the modules are described in detail below. The power supply module comprises a pin bank J2, a diode D5, a resistor R7, a capacitor C2 and a capacitor C4, wherein a first pin and a second pin of a pin bank J2 are indirectly connected with a power supply V1, the first pin of the pin bank J2 is grounded, the second pin of the pin bank J2 is connected with the anode of a diode D5, the cathode of the diode D5 is connected with one end of a resistor R7, the other end of the resistor R7 is connected with one end of a capacitor C2 and one end of a capacitor C4, and the other end of the capacitor C2 and the other end of the capacitor C4 are grounded. Wherein the capacitor C2 and the capacitor C4 are the filtering function, so that the circuit is more stable. The diode D5 can prevent the reverse polarity of the power supply, and ensure the safety of the circuit.
The oscillator comprises a resistor R10, a diode D6, a resistor R11, a capacitor C5 and a third Schmitt trigger part U1C, wherein one end of the resistor R10 is connected with the anode of a diode D6, an eighth pin and a ninth pin of the third Schmitt trigger part U1C are connected together and connected to the anode of a diode D6, and one end of the capacitor C5 is connected with the eighth pin and the ninth pin of the third Schmitt trigger part U1C; the other end of the resistor R10, the other end of the resistor R11 and the tenth pin of the Schmitt trigger third portion U1C are connected together. The oscillator outputs a pulse signal from the tenth pin of the schmitt trigger third section U1C to the next stage circuit.
The infrared transmitting circuit comprises a resistor R12, a triode Q4, a resistor R9 and an infrared transmitting tube D2, one end of the resistor R12 is connected with a tenth pin of a Schmidt trigger third part U1C, the other end of the resistor R12 is connected with a base electrode of the triode Q4, an emitting electrode of the triode Q4 is connected with a power supply VDD, a collecting electrode of the triode Q4 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with an anode of the infrared transmitting tube D2, and a cathode of the infrared transmitting tube D2 is connected with the other end of the capacitor C5. A pulse signal output from a tenth pin of the schmitt trigger third part U1C is amplified by the triode Q4 and drives the infrared transmitting tube D2 to transmit an infrared signal to the space, if the signal is not blocked by an obstacle, the infrared receiving tube D1 cannot receive the signal, so that the following circuit does not work; when an obstacle exists in front of the infrared transmitting tube D2, the transmitted infrared signal is transmitted back by the obstacle and is received by the infrared receiving tube D1, and a subsequent circuit is conducted.
The infrared receiving circuit comprises a resistor R1, a resistor R2, a capacitor C1, a triode Q1, a triode Q2, an infrared receiving tube D1 and a resistor R3, wherein one end of the resistor R1 is connected with one end of the resistor R2, one end of the capacitor C1 is connected with the other end of the resistor R1, and the other end of the capacitor C1 is connected with the other end of the resistor R2; the anode of the infrared receiving tube D1 is connected with one end of a capacitor C1, the base of a triode Q1 is connected with the other end of the capacitor C1, the collector of the triode Q1 is connected with one end of a resistor R3, the other end of the resistor R3 is grounded, and the cathode of the infrared receiving tube D1 is connected with the other end of the resistor R3; the emitter of the triode Q1 is connected with the base of the triode Q2, and the emitter of the triode Q2 is connected with one end of the resistor R2; the collector of the triode Q2 is connected with one end of the capacitor C2. After the infrared receiving tube D1 receives the signal transmitted by the infrared transmitting tube D2, the received signal is amplified by the triode Q1 and the triode Q2, and finally the amplified infrared signal is output at the end of the resistor R3.
The frequency selection circuit comprises a first Schmitt trigger part U1A and a resistor R4, wherein a collector of the triode Q2 and a collector of the triode Q1 are both connected with a first pin of the first Schmitt trigger part U1A, a collector of the triode Q4 is connected with a second pin of the first Schmitt trigger part U1A, and one end of the resistor R4 is connected with a third pin of the first Schmitt trigger part U1A. The resistor R3 end outputs amplified infrared signals, and frequency selection is carried out on the infrared signals by the first part U1A of the Schmitt trigger.
The shaping circuit comprises a fourth Schmitt trigger part U1D, a resistor R13 and a diode D7, wherein the cathode of the diode D7 is connected with the other end of the resistor R4, the anode of the diode D7 is connected with one end of a resistor R13, and the other end of the resistor R13 is connected with a power supply VDD; and the second pin and the third pin of the fourth part U1D of the Schmitt trigger are both connected with the anode of the diode D7. The signal frequency-selected by the first section U1A of the schmitt trigger is shaped by the shaping circuit of the fourth section U1D of the schmitt trigger and then output at the eleventh pin of the fourth section U1D of the schmitt trigger.
The delay module comprises a resistor R5, an adjustable resistor VR1, a capacitor C3 and a diode D8, wherein the anode of the diode D8 is connected with the eleventh pin of the fourth part U1D of the Schmitt trigger, the cathode of the diode D8 is connected with one end of the capacitor C3, one end of the capacitor C3 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of an adjustable resistor VR1, the other end of the adjustable resistor VR1 is connected with the other end of a capacitor C3, and the other end of the capacitor C3 is grounded; the other end of the adjustable resistor VR1 is connected with the other end of the capacitor C3. The adjustable resistor VR1 can be adjusted to adjust the delay time after each action, the utility model has adjustable delay time in the range of 0-40S, and the delay time is slightly different because each element parameter has certain error.
The switch control module comprises a Schmidt trigger second part U1B, a resistor R6, a triode Q3, a resistor R14, a resistor R15, a triode Q5, a resistor R8, a light emitting diode D3, a diode D4 and a relay, wherein the relay comprises a coil K2 and a normally-open contact K1, a fifth pin and a sixth pin of the Schmidt trigger second part U1B are connected to one end of the resistor R5, a fourth pin of the Schmidt trigger second part U1B is connected to one end of the resistor R6, the other end of the resistor R6 is connected to a base of the triode Q3, a collector of the triode Q3 is connected to one end of the resistor R14, the other end of the resistor R14 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to a cathode of the infrared emission tube D2; the emitter of the triode Q3 is connected with a power supply VDD, the base of the triode Q5 is connected with the connecting line of a resistor R15 of a resistor R14, and the emitter of the triode Q5 is connected with the other end of the resistor R15 and is grounded; the collector of the triode Q5 is connected with the anode of the diode D4, the cathode of the diode D4 is connected with one end of the resistor R8, the other end of the resistor R8 is connected with the anode of the light-emitting diode D3, one end of the cathode connection coil K2 of the light-emitting diode D3, and the other end of the coil K2 is connected with the cathode of the diode D4 and connected with the connecting wire of the pin bank J2 and the anode of the diode D5. If the infrared receiving tube D1 receives a signal, a delayed low level signal is finally output at the fourth pin of the schmitt trigger second part U1B, so that the triode Q3 and the triode Q5 are turned on, the coil K2 is powered, the normally closed contact K1 is pulled in, the light emitting diode D3 is a relay working state indicator light, and when a loop where the relay is located is turned on, the light emitting diode D3 emits light to indicate that the circuit is turned on.
The infrared induction type air door alarm controller further comprises an alarm module, the alarm module comprises a controller, a first normally closed contact and a second normally closed contact, the first normally closed contact and the second normally closed contact are respectively connected with the controller, the first normally closed contact is connected with two ends of a normally open contact of a coal mine infrared induction type air door alarm controller installed on a door frame of the first air door, the first normally closed contact is connected with the normally open contact, the normally open contact of the coal mine infrared induction type air door alarm controller installed on the second air door is connected with the normally open contact, when the first normally closed contact and the second normally closed contact are both closed, the controller simultaneously receives a signal from the coal mine infrared induction type air door alarm controller on the first air door and a signal from the coal mine infrared induction type air door alarm controller on the second air door, and the alarm module acts, the voice alarm is generated, wherein the voice alarm can be realized in various ways, such as connecting with a loudspeaker, and controlling the action of the loudspeaker through a controller.
It should be noted that the first schmitt trigger part U1A, the second schmitt trigger part U1B, the third schmitt trigger part U1C and the fourth schmitt trigger part U1D together form the chip CD4093, and the description is only made by dividing the chip CD4093 into four parts for convenience of drawing a schematic diagram.
Additionally, the utility model discloses well alarm module's controller and two normally closed contact technical personnel in the field can select as required to not injecing the model of controller and the concrete pin connected relation of normally closed contact, as long as can realize the utility model discloses an alarm module's function can.
The utility model discloses a working process and theory of operation do: the infrared induction type air door alarm controller is installed on two air doors, the circuit principle of each infrared induction type air door alarm controller is the same, and the principle of the infrared induction type air door alarm controller on the first air door is used as an example to introduce the infrared induction type air door alarm controller in detail. On the first air door, a resistor R10, a diode D6, a resistor R11, a capacitor C5 and a Schmidt trigger third part U1C form an oscillator, the oscillator outputs a pulse signal from a tenth pin of the Schmidt trigger third part U1C, the pulse signal is amplified by a triode Q4 and then drives an infrared transmitting tube D2 to transmit an infrared signal to the space, and if the signal is not blocked by an obstacle, the infrared receiving tube D1 cannot receive the signal, so that a rear circuit does not work; when an obstacle exists in front of the infrared transmitting tube D2, the transmitted infrared signal is transmitted back by the obstacle and is received by the infrared receiving tube D1, and a subsequent circuit is conducted. After the infrared receiving tube D1 receives the signal transmitted by the infrared transmitting tube D2, the received signal is amplified by the triode Q1 and the triode Q2, and finally the amplified infrared signal is output at the end of the resistor R3. The infrared signal that resistance R3 end output was enlargied carries out the frequency selection by schmitt trigger first part U1A, carries out the plastic back at schmitt trigger fourth part U1D again and exports to the delay module at schmitt trigger fourth part U1D' S eleventh pin, adjusts the delay time that adjustable resistance VR1 can adjust after the action at every turn in the delay module, the utility model discloses a delay time is adjustable at 0-40S scope, because each component parameter has certain error, so delay time can slightly have the difference. Finally, a delayed low level signal is output at a fourth pin of a U1B of a second part of the Schmidt trigger, so that a triode Q3 and a triode Q5 are conducted, a coil K2 is electrified, a normally closed contact K1 is attracted, a light emitting diode D3 is a relay working state indicator lamp, when a loop where the relay is located is conducted, a light emitting diode D3 emits light to indicate that the circuit is conducted, after a normally open contact K1 is closed, a first normally closed contact of the alarm module and the normally open contact K1 belong to a group of linkage contacts, the first normally closed contact of the alarm module is opened, a controller of the alarm module detects a low level sent by the first normally closed contact, the second air door is closed, after a normally open contact K1 is opened, the first normally closed contact of the alarm module and the normally open contact K1 belong to a group of linkage contacts, the normally closed first normally closed contact of the alarm module is closed, the controller of the alarm module detects a high level sent by the first, indicating that the second damper is open; similarly, an infrared induction type air door alarm controller is also installed on a door frame of the second air door, after a normally open contact of the infrared induction type air door alarm controller installed on the second air door is closed, a second normally closed contact of the alarm module and a normally open contact of the infrared induction type air door alarm controller installed on the second air door belong to a group of linkage contacts, the second normally closed contact of the alarm module is opened, the controller of the alarm module detects a low level sent by the second normally closed contact and indicates that the first air door is closed, after the normally open contact of the infrared induction type air door alarm controller installed on the second air door is opened, the second normally closed contact of the alarm module is closed, the controller of the alarm module detects a high level sent by the second normally closed contact and indicates that the first air door is opened, when the controller simultaneously detects a high level sent by the first normally closed contact and a high level sent by the second normally closed contact and indicates that the first air door and the second air door are simultaneously opened, and sending out voice alarm to prompt field personnel to take measures and close an air door.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The coal mine infrared induction type air door alarm controller is characterized by comprising a power supply module, an infrared induction module, a time delay module and a switch control module, wherein the output end of the infrared induction module is connected with the input end of the time delay module, the output end of the time delay module is connected with the input end of the switch control module, and the power supply module is used for supplying power to the infrared induction module, the time delay module and the switch control module respectively;
the infrared induction module comprises an oscillator, an infrared receiving circuit, an infrared transmitting circuit, a frequency selecting circuit and a shaping circuit, wherein the infrared receiving circuit is in communication connection with the infrared transmitting circuit, the output end of the oscillator is connected with the input end of the infrared transmitting circuit, the output end of the infrared transmitting circuit and the output end of the infrared receiving circuit are both connected with the input end of the frequency selecting circuit, and the output end of the frequency selecting circuit is connected with the input end of the shaping circuit;
the first air door and the second air door are arranged oppositely, a coal mine infrared induction type air door alarm controller is installed on a door frame of the first air door, and a coal mine infrared induction type air door alarm controller is also installed on a door frame of the second air door.
2. The coal mine infrared induction type air door alarm controller as claimed in claim 1, wherein the power module comprises a pin bank J2, a diode D5, a resistor R7, a capacitor C2 and a capacitor C4, a first pin and a second pin of the pin bank J2 are indirectly connected with a power supply V1, the first pin of the pin bank J2 is grounded, the second pin of the pin bank J2 is connected with an anode of a diode D5, a cathode of the diode D5 is connected with one end of a resistor R7, the other end of the resistor R7 is connected with one end of a capacitor C2 and one end of a capacitor C4, and the other end of the capacitor C2 and the other end of the capacitor C4 are grounded.
3. The coal mine infrared induction type damper alarm controller according to claim 2, characterized in that the oscillator comprises a resistor R10, a diode D6, a resistor R11, a capacitor C5 and a Schmidt trigger third part U1C, one end of the resistor R10 is connected with an anode of a diode D6, an eighth pin and a ninth pin of the Schmidt trigger third part U1C are connected together and connected with an anode of the diode D6, one end of the capacitor C5 is connected with the eighth pin and the ninth pin of the Schmidt trigger third part U1C; the other end of the resistor R10, the other end of the resistor R11 and the tenth pin of the Schmitt trigger third portion U1C are connected together.
4. The coal mine infrared induction type air door alarm controller as claimed in claim 3, wherein the infrared transmitting circuit comprises a resistor R12, a triode Q4, a resistor R9 and an infrared transmitting tube D2, one end of the resistor R12 is connected with the tenth pin of the Schmidt trigger third part U1C, the other end of the resistor R12 is connected with the base of the triode Q4, the emitter of the triode Q4 is connected with a power supply VDD, the collector of the triode Q4 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with the anode of the infrared transmitting tube D2, and the cathode of the infrared transmitting tube D2 is connected with the other end of the capacitor C5.
5. The coal mine infrared induction type air door alarm controller as claimed in claim 4, wherein the infrared receiving circuit comprises a resistor R1, a resistor R2, a capacitor C1, a triode Q1, a triode Q2, an infrared receiving tube D1 and a resistor R3, one end of the resistor R1 is connected with one end of the resistor R2, one end of the capacitor C1 is connected with the other end of the resistor R1, and the other end of the capacitor C1 is connected with the other end of the resistor R2; the anode of the infrared receiving tube D1 is connected with one end of a capacitor C1, the base of a triode Q1 is connected with the other end of the capacitor C1, the collector of the triode Q1 is connected with one end of a resistor R3, the other end of the resistor R3 is grounded, and the cathode of the infrared receiving tube D1 is connected with the other end of the resistor R3; the emitter of the triode Q1 is connected with the base of the triode Q2, and the emitter of the triode Q2 is connected with one end of the resistor R2; the collector of the triode Q2 is connected with one end of the capacitor C2.
6. The coal mine infrared induction type damper alarm controller according to claim 5, characterized in that the frequency selection circuit comprises a Schmidt trigger first part U1A and a resistor R4, wherein a collector of the transistor Q2 and a collector of the transistor Q1 are connected with a first pin of the Schmidt trigger first part U1A, a collector of the transistor Q4 is connected with a second pin of the Schmidt trigger first part U1A, and one end of the resistor R4 is connected with a third pin of the Schmidt trigger first part U1A.
7. The coal mine infrared induction type air door alarm controller as claimed in claim 6, wherein the shaping circuit comprises a Schmidt trigger fourth part U1D, a resistor R13 and a diode D7, the cathode of the diode D7 is connected with the other end of the resistor R4, the anode of the diode D7 is connected with one end of a resistor R13, and the other end of the resistor R13 is connected with a power supply VDD; and the second pin and the third pin of the fourth part U1D of the Schmitt trigger are both connected with the anode of the diode D7.
8. The coal mine infrared induction type air door alarm controller as claimed in claim 7, wherein the delay module comprises a resistor R5, an adjustable resistor VR1, a capacitor C3 and a diode D8, wherein the anode of the diode D8 is connected with the eleventh pin of the fourth part U1D of the Schmidt trigger, the cathode of the diode D8 is connected with one end of the capacitor C3, one end of the capacitor C3 is connected with one end of a resistor R5, the other end of the resistor R5 is connected with one end of an adjustable resistor VR1, the other end of the adjustable resistor VR1 is connected with the other end of a capacitor C3, and the other end of the capacitor C3 is grounded; the other end of the adjustable resistor VR1 is connected with the other end of the capacitor C3.
9. The coal mine infrared induction type air door alarm controller as claimed in claim 8, wherein the switch control module comprises a schmitt trigger second part U1B, a resistor R6, a triode Q3, a resistor R14, a resistor R15, a triode Q5, a resistor R8, a light emitting diode D3, a diode D4 and a relay, the relay comprises a coil K2 and a normally open contact K1, a fifth pin and a sixth pin of the schmitt trigger second part U1B are both connected to one end of the resistor R5, a fourth pin of the schmitt trigger second part U1B is connected to one end of the resistor R6, the other end of the resistor R6 is connected to a base of the triode Q3, a collector of the triode Q3 is connected to one end of a resistor R14, the other end of the resistor R14 is connected to one end of the resistor R15, and the other end of the resistor R15 is connected to a cathode of the infrared emission tube D2; the emitter of the triode Q3 is connected with a power supply VDD, the base of the triode Q5 is connected with the connecting line of a resistor R15 of a resistor R14, and the emitter of the triode Q5 is connected with the other end of the resistor R15 and is grounded; the collector of the triode Q5 is connected with the anode of the diode D4, the cathode of the diode D4 is connected with one end of the resistor R8, the other end of the resistor R8 is connected with the anode of the light-emitting diode D3, one end of the cathode connection coil K2 of the light-emitting diode D3, and the other end of the coil K2 is connected with the cathode of the diode D4 and connected with the connecting wire of the pin bank J2 and the anode of the diode D5.
10. The coal mine infrared induction type air door alarm controller according to claim 9, further comprising an alarm module, wherein the alarm module comprises a controller, a first normally closed contact and a second normally closed contact, the first normally closed contact and the second normally closed contact are respectively connected with the controller, the first normally closed contact is connected with two ends of a normally open contact of the coal mine infrared induction type air door alarm controller installed on a door frame of the first air door, and the first normally closed contact is connected with the normally open contact to form a set of linkage contacts, and the second normally closed contact is connected with the normally open contact of the coal mine infrared induction type air door alarm controller installed on the second air door.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921010984.6U CN210134977U (en) | 2019-07-01 | 2019-07-01 | Infrared induction type air door alarm controller for coal mine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921010984.6U CN210134977U (en) | 2019-07-01 | 2019-07-01 | Infrared induction type air door alarm controller for coal mine |
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| CN210134977U true CN210134977U (en) | 2020-03-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206589A (en) * | 2019-07-01 | 2019-09-06 | 淮南矿业(集团)有限责任公司 | Coal mine infrared-sensing type air door alarm controller |
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2019
- 2019-07-01 CN CN201921010984.6U patent/CN210134977U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110206589A (en) * | 2019-07-01 | 2019-09-06 | 淮南矿业(集团)有限责任公司 | Coal mine infrared-sensing type air door alarm controller |
| CN110206589B (en) * | 2019-07-01 | 2024-06-25 | 淮南矿业(集团)有限责任公司 | Infrared induction type air door alarm controller for coal mine |
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