CN109309998B - Tower lamp signal acquisition device and implementation method - Google Patents
Tower lamp signal acquisition device and implementation method Download PDFInfo
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- CN109309998B CN109309998B CN201811470639.0A CN201811470639A CN109309998B CN 109309998 B CN109309998 B CN 109309998B CN 201811470639 A CN201811470639 A CN 201811470639A CN 109309998 B CN109309998 B CN 109309998B
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- 238000004146 energy storage Methods 0.000 claims description 21
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
- H05B47/10—Controlling the light source
Abstract
A tower lamp signal acquisition device and implementation method, this device connects +24V external power supply and red light line, ground wire, green light line of the tower lamp of the monitored equipment, process output 0V or +24V through the acquisition circuit, for example, is 0V, indicate the monitored equipment works normally; e.g., +24V, indicating that the monitored device is malfunctioning. When the fault equipment or the external power supply is closed in the overhaul process of the monitored equipment, the fault state is not lost. The running state of the monitored equipment can be intuitively judged from the internal status lamp and the output status lamp on the device, and when the two lamps are turned off, the running state of the monitored equipment is indicated to be normal; when both lamps are on, indicating that the monitored equipment fails; when the internal status lamp is on and the output status lamp is off, the monitored equipment is indicated to be faulty, and the external power supply of the device is interrupted. The simple and reliable circuit is used for collecting unified tower lamp signals, and level signals of normal equipment or equipment faults can be obtained.
Description
Technical Field
The invention relates to a tower lamp signal acquisition device and an implementation method, which are used for acquiring tower lamp signals on various monitored equipment.
Background
Tower lamps are widely used on various industrial equipment to display the running states of the equipment, and along with the development of automation, the running states of a large number of industrial equipment in a factory are required to be uniformly collected and monitored through an informatization system so as to timely feed back the abnormal states of the monitored equipment to equipment maintenance personnel and provide data for counting the average fault interval time of the equipment.
However, the state feedback module on each type of equipment needs to be matched, and then signals are collected from the main board of the monitored equipment, so that the cost is high, the output signal formats are various, the interface protocol is complex, the sampling is difficult, and the running state of the monitored equipment is lost once the monitored equipment is shut down or the factory is powered off. Therefore, the independent research and development of a simple and reliable tower lamp signal acquisition device becomes an important subject to be solved urgently by technicians.
Disclosure of Invention
In view of the above-mentioned prior art, the present invention provides a tower light signal acquisition device and implementation method, which are mainly applied to the acquisition of tower light signals on various devices so as to provide device status data for a data processing system.
The invention adopts the following technical scheme to realize the purposes: a tower lamp signal acquisition device is characterized in that: the device comprises a shell, wherein the shell consists of an upper cover, a main board and a lower cover;
the upper cover is provided with a wiring terminal hole I, a wiring terminal hole II, an internal state lamp hole and an output state lamp hole on the surface respectively;
the main board is provided with an acquisition circuit;
the lower cover and the upper cover are fixed together, a main board is arranged in the upper cover between the lower cover and the upper cover, and an internal status lamp D5, an output status lamp D7, a wiring terminal J1 and a wiring terminal J2 on the main board collecting circuit are respectively inserted into an internal status lamp hole, an output status lamp hole, a wiring terminal hole I and a wiring terminal hole II of the upper cover correspondingly;
the acquisition circuit comprises a power supply circuit, an energy storage circuit, an input conversion circuit, a signal acquisition circuit and an output conversion circuit, wherein the power supply circuit supplies power for the energy storage circuit, the input conversion circuit and the signal acquisition circuit, the energy storage circuit supplies standby power for the input conversion circuit and the signal acquisition circuit, and the input conversion circuit, the signal acquisition circuit and the output conversion circuit are connected in series to form a whole path for signal acquisition, state identification and conversion output.
The implementation method of the tower lamp signal acquisition device is characterized by comprising the following steps of:
firstly, connecting an external power supply +24V power supply with a pin 1 and a pin 2 of a wiring terminal J1; connecting the SIG_OUT end of an external data acquisition system with the 3-pin signal output end of the wiring terminal J1, and connecting the ground wire of the external data acquisition system with the 4-pin grounding end of the wiring terminal J1; the GREEN LIGHT line green_light of the monitored tower lamp is connected with the 1 pin of the wiring terminal J2, the RED LIGHT line red_light of the monitored tower lamp is connected with the 3 pin of the wiring terminal J2, and the ground line of the monitored tower lamp is connected with the 2 pin public ground GND of the wiring terminal J2;
secondly, when the device is connected with an external power supply of +24V, the external power supply of +24V is input to a pin 7 of a DC-DC module IC1, and is subjected to feedback control of a starting capacitor C13, feedback resistors R1 and R2, filtering and voltage stabilization of an inductor L1, a voltage stabilizing capacitor C3, a capacitor C4, a capacitor C5 and a capacitor C6, a +5V internal power supply is formed at the joint of the capacitor C6 and the feedback resistor R1, the +5V internal power supply supplies power to an energy storage circuit, an input conversion circuit and a signal acquisition circuit, the external power supply of +24V simultaneously supplies power to an output conversion circuit, after the internal power supply of +5V is connected with the energy storage circuit, the internal power supply is charged into a Farad capacitor C7 through a diode D3 and a charging current limiting resistor R3, and the Farad capacitor C7 is automatically stopped from being charged after the voltage of the Farad capacitor C7 reaches +5V;
third, when the monitored equipment is in a normal working state, a RED LIGHT line RED_LIGHT of the equipment tower LIGHT is 0V, a GREEN LIGHT line GREEN_LIGHT is +24V, at the moment, a source electrode of a transistor Q2 of an input conversion circuit outputs 0V, a source electrode of a transistor Q1 outputs +5V, two level signals are respectively transmitted to a pin 11 and a pin 10 of a trigger IC2, according to internal logic of the trigger IC2, a pin 13 output of the trigger IC2 is kept at a low level 0V in a power-on reset state, so that a switching tube Q3 is conducted, an internal state LIGHT D5 is kept in an off state, meanwhile, transistors Q4 and Q5 of an output conversion circuit are both turned off, an output state LIGHT D7 is kept in an off state, an output protection diode D6 outputs 0V, and an external data acquisition system obtains 0V from the SIG_OUT, so that the monitored equipment works normally;
fourth step, when the monitored equipment fails, the RED LIGHT line RED_LIGHT of the equipment tower LIGHT is changed from 0V to +24V, the GREEN LIGHT line GREEN_LIGHT is changed from +24V to 0V, at the moment, the transistor Q2 of the input conversion circuit outputs +5V, the transistor Q1 outputs 0V, two level signals are respectively transmitted to the 11 pin and the 10 pin of the trigger IC2, the 13 pin output of the trigger IC2 is changed from 0V to +5V according to the internal logic of the trigger IC2, so that the switching tube Q3 of the signal acquisition circuit is cut off, the internal state LIGHT D5 is turned on, meanwhile, the output conversion circuit transistors Q4 and Q5 are both turned on, the output state LIGHT D7 is turned on, the output protection diode D6 outputs +24V, and the external data acquisition system obtains +24V from the SIG_OUT, so as to indicate that the monitored equipment fails;
fifthly, after the equipment to be monitored is overhauled and restarted, a RED LIGHT line RED_LIGHT of a tower LIGHT of the equipment is changed from +24V to 0V, a GREEN LIGHT line GREEN_LIGHT is changed from 0V to +24V, at the moment, an input conversion circuit transistor Q2 outputs 0V, a transistor Q1 outputs +5V, two level signals are respectively transmitted to a pin 11 and a pin 10 of a trigger IC2, a pin 13 of the trigger IC2 outputs 0V according to internal logic of the trigger IC2, so that a switching tube Q3 of a signal acquisition circuit is conducted, an internal state LIGHT D5 is extinguished, transistors Q4 and Q5 of the output conversion circuit are both turned off, an output state LIGHT D7 is extinguished, an output protection diode D6 outputs 0V, and an external data acquisition system obtains 0V from the SIG_OUT, and the external data acquisition system indicates that the equipment to be monitored is recovered to be normal;
the method comprises the following steps that a sixth step, when the power supply of fault equipment is turned off in the overhaul process of monitored equipment, a RED LIGHT line RED_LIGHT and a GREEN LIGHT line GREEN_LIGHT of the equipment tower LIGHT are both 0V, at the moment, an input conversion circuit transistor Q2 and a GREEN LIGHT line GREEN_LIGHT are both 0V, two level signals are respectively transmitted to a pin 11 and a pin 10 of a trigger IC2, according to internal logic of the trigger IC2, a pin 13 of the trigger IC2 keeps outputting +5V, so that a switching tube Q3 of a signal acquisition circuit is kept off, an internal state LIGHT D5 is kept in a lighted state, meanwhile, transistors Q4 and Q5 of the output conversion circuit are kept on, an output state LIGHT D7 is kept in a lighted state, an output protection diode D6 is kept outputting +24V, an external data acquisition system obtains +24V from SIG_OUT, and the device still keeps the fault state until the monitored equipment is completely powered off, the GREEN LIGHT line GRN_LIGHT of the equipment LIGHT is kept to be +24V until the monitored equipment is completely powered off, and the principle of the RED LIGHT line GRN_LIGHT is changed to be 0, and the condition is recovered from the outside after the monitored equipment is normally, and the step is obtained;
seventh, when the external power supply +24V is turned off in the overhaul process of the monitored equipment, the Faraday capacitor C7 of the energy storage circuit supplies standby power to the input conversion circuit and the signal acquisition circuit through the discharge current-limiting resistor R4 and the discharge protection diode D4, so that the 13 pin of the trigger IC2 of the signal acquisition circuit keeps the original output state of 0V or +5V, and the loss of a fault state is avoided;
eighth, when the external power supply +24v power supply resumes the power supply, the output state 0V or +5v held by 13 pins of the signal acquisition circuit trigger IC2 is transmitted to the output conversion circuit, and is output to the external data acquisition system through the output protection diode D6, and the external data acquisition system judges whether the monitored equipment works normally according to whether the level obtained from sig_out is 0V or +24v;
ninth, the running state of the monitored equipment can be intuitively judged from the internal state lamp D5 and the output state lamp D7 on the device, and when the internal state lamp D5 and the output state lamp D7 are in the off state, the running state of the monitored equipment is indicated to be normal; when the internal status lamp D5 and the output status lamp D7 are both in the lighted state, the monitored equipment is indicated to be in fault; when the internal status lamp D5 is on and the output status lamp D7 is off, the monitored equipment is in fault, and the external power supply of the device is interrupted.
The invention is characterized in that:
1. contains a tank circuit. The device can keep record of the fault state of the monitored equipment even if the monitored equipment is subjected to power-off maintenance or even in the power-off state of a factory, and the fault state is not lost.
2. The energy storage element adopts Farad capacitor, not all kinds of batteries, so that the device can be transported in an air transportation mode.
3. The input conversion circuit, the signal acquisition circuit and the output conversion circuit of the main body are realized by adopting simple transistors and trigger circuits, and the acquisition of unified tower lamp signals is realized by simple and reliable circuits, so that the level signals of normal equipment or equipment faults can be obtained. The level signal of the normal or equipment failure of the equipment is connected to an external informatization system, so that the purposes of uniformly collecting and monitoring the running states of a large number of industrial equipment in a factory and counting the average failure interval time of the equipment can be realized.
4. The wired connection has strong interference resistance and no input of auxiliary equipment or facilities.
5. The device has simple structure, reliable performance and low cost, and is easy to be used in a large number of factories of monitored equipment.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the structure of FIG. 1;
FIG. 3 is a block diagram of a circuit connection of the present invention;
fig. 4 is a schematic circuit diagram of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1 to 4, a tower lamp signal acquisition device comprises a shell, wherein the shell is composed of an upper cover 1, a main board 2 and a lower cover 3.
The upper cover 1 is provided with a wiring terminal hole I1-1, a wiring terminal hole II 1-2, an internal state lamp hole 1-3 and an output state lamp hole 1-4 respectively.
The main board 2 is provided with an acquisition circuit.
The lower cover 3 and the upper cover 1 are fixed together through a screw 4, a main board 2 is arranged in the upper cover 1 between the lower cover 3 and the upper cover 1, and an internal status lamp D5, an output status lamp D7, a wiring terminal J1 and a wiring terminal J2 on the collecting circuit of the main board 2 are respectively correspondingly inserted into an internal status lamp hole 1-3, an output status lamp hole 1-4, a wiring terminal hole I1-1 and a wiring terminal hole II 1-2 of the upper cover 1.
The acquisition circuit comprises a power supply circuit, an energy storage circuit, an input conversion circuit, a signal acquisition circuit and an output conversion circuit, wherein the power supply circuit supplies power for the energy storage circuit, the input conversion circuit and the signal acquisition circuit, the energy storage circuit supplies standby power for the input conversion circuit and the signal acquisition circuit, and the input conversion circuit, the signal acquisition circuit and the output conversion circuit are connected in series to form a whole channel for signal acquisition, state identification and conversion output.
A tower lamp signal acquisition device, acquisition circuit concretely connects to:
in the power supply circuit, pin 7 of the DC-DC module IC1 is respectively connected with the cathode of the protection diode D1, the voltage stabilizing capacitor C1, one end of the voltage stabilizing capacitor C2 and the 1 pin +24V power supply of the wiring terminal J1, the anodes of the protection diode D1, the voltage stabilizing capacitor C1 and the other end of the voltage stabilizing capacitor C2 are respectively connected with pin 2 of the wiring terminal J1 and grounded, pin 8 of the DC-DC module IC1 is respectively connected with one end of the starting capacitor C13 and the inductor L1 and the cathode of the protection diode D2, the other end of the starting capacitor C13 is connected with pin 1 of the DC-DC module IC1, the other end of the inductor L1 is respectively connected with one end of the voltage stabilizing capacitor C3, the voltage stabilizing capacitor C4, the capacitor C5, the capacitor C6 and the internal power supply of +5V, the anodes of the protection diode D2 are respectively connected with one end of the voltage stabilizing capacitor C3, the capacitor C5 and the other end of the capacitor C6 and grounded, the other end of the feedback resistor R1 is respectively connected with one end of the resistor R2 and pin 4 of the resistor IC1, and the other end of the resistor R1 is connected with the other end of the resistor R9 and the resistor R2.
In the energy storage circuit, the cathode of the charging protection diode D3 is connected with one ends of a discharging current-limiting resistor R4 and a Farad capacitor C7 through a charging current-limiting resistor R3 respectively, the other end of the discharging current-limiting resistor R4 is connected with the anode of the discharging protection diode D4, the cathode of the discharging protection diode D4 and the anode of the charging protection diode D3 are connected with +5V internal power supply of the power supply circuit respectively, and the other end of the Farad capacitor C7 is grounded.
In the input conversion circuit, one end of a voltage dividing resistor R5 and one end of a voltage dividing resistor R6 are connected with a grid electrode of a transistor Q1, a source electrode of the transistor Q1 is connected with a +5V power supply through a pull-up resistor R7, a drain electrode of the transistor Q1 is respectively connected with the other end of the voltage dividing resistor R5, the 2 pin of a wiring terminal J2 and the ground, the other end of the voltage dividing resistor R5 is connected with the 1 pin of the wiring terminal J2, one ends of a voltage dividing resistor R8 and a voltage dividing resistor R9 are connected with the grid electrode of the transistor Q2, the source electrode of the transistor Q2 is connected with the +5V power supply through a pull-up resistor R10, the drain electrode of the transistor Q2 is connected with the other end of the voltage dividing resistor R9 and the ground, and the other end of the voltage dividing resistor R8 is connected with the 3 pins of the wiring terminal J2.
In the signal acquisition circuit, 3 feet, 4 feet, 5 feet, 6 feet, 7 feet and 8 feet of the trigger IC2 are grounded, 10 feet are respectively connected with a reset capacitor C8, a filter capacitor C9, one end of a pull-down resistor R11 and a source electrode of an input conversion circuit transistor Q1, the other end of the reset capacitor C8 is respectively connected with 9 feet, 14 feet, one end of a voltage stabilizing capacitor C11 and a pull-up resistor R13 of the trigger IC2 and a +5V power supply, the other ends of the filter capacitor C9, the pull-down resistor R11 and the voltage stabilizing capacitor C11 are grounded, the other end of the pull-up resistor R13 is connected with an emitter electrode of a switch tube Q3 and one end of a current limiting resistor R14, the other end of the current limiting resistor R14 is connected with a collector electrode of the switch tube Q3 through an internal state lamp D5, one end of the filter capacitor C12 and the ground, the other end of the filter capacitor C12 is connected with a base electrode of the switch tube Q3 and the foot 13 of the trigger IC2, and the other end of the 11 of the trigger IC2 is respectively connected with the pull-down resistor R12, one end of the filter capacitor C10 and the source electrode of the input conversion circuit transistor Q2, and the other end of the filter capacitor C10 is grounded.
In the output conversion circuit, one end of a current limiting resistor R15 and a pull-down resistor R16 is connected with the grid electrode of a transistor Q4, the drain electrode of the transistor Q4 is connected with one ends of a current limiting resistor R18 and a pull-up resistor R19 through a current limiting resistor R17, the other end of the current limiting resistor R18 is connected with the grid electrode of a transistor Q5, the other end of the pull-up resistor R19 is connected with the source electrode of the transistor Q5, +24V power supply and the 1 pin of a wiring terminal J1, the drain electrode of the transistor Q5 is connected with the anode of an output protection diode D6 and one end of a current limiting resistor R20, the cathode of the protection diode D6 is connected with the 3 pin of the wiring terminal J2, and the other end of the current limiting resistor R20 is connected with the other end of the pull-down resistor R16 through an output status lamp D7, the source electrode of the transistor Q4 and the 4 pin of the wiring terminal J2.
The model of the DC-DC module IC1 is as follows: TPS5450.
The type of the flip-flop IC2 is: MC14013B.
The implementation method of the tower lamp signal acquisition device comprises the following steps:
firstly, connecting an external power supply +24V power supply with a pin 1 and a pin 2 of a wiring terminal J1; connecting the SIG_OUT end of an external data acquisition system with the 3-pin signal output end of the wiring terminal J1, and connecting the ground wire of the external data acquisition system with the 4-pin grounding end of the wiring terminal J1; the GREEN LIGHT line green_light of the monitored tower lamp is connected with 1 pin of the wiring terminal J2, the RED LIGHT line red_light of the monitored tower lamp is connected with 3 pins of the wiring terminal J2, and the ground line of the monitored tower lamp is connected with 2 pins of the wiring terminal J2 through a common ground GND.
And secondly, after the device is connected with an external power supply of +24V, the external power supply of +24V is input to a pin 7 of the DC-DC module IC1, and is subjected to feedback control of a starting capacitor C13, feedback resistors R1 and R2, filtering and voltage stabilization of an inductor L1, a voltage stabilizing capacitor C3, a capacitor C4, a capacitor C5 and a capacitor C6, a +5V internal power supply is formed at the joint of the capacitor C6 and the feedback resistor R1, the +5V internal power supply supplies power to an energy storage circuit, an input conversion circuit and a signal acquisition circuit, the external power supply of +24V simultaneously supplies power to an output conversion circuit, after the internal power supply of +5V is connected with the energy storage circuit, the internal power supply is charged into a Farad capacitor C7 through a diode D3 and a charging current limiting resistor R3, and the Farad capacitor C7 is automatically stopped from being charged after the voltage of the Farad capacitor C7 reaches +5V.
Third, when the monitored equipment is in a normal working state, a RED LIGHT line RED_LIGHT of the equipment tower LIGHT is 0V, a GREEN LIGHT line GREEN_LIGHT is +24V, at the moment, a source electrode of a transistor Q2 of the input conversion circuit outputs 0V, a source electrode of a transistor Q1 outputs +5V, two level signals are respectively transmitted to a pin 11 and a pin 10 of the trigger IC2, according to internal logic of the trigger IC2, a pin 13 output of the trigger IC2 is kept at a low level 0V in a power-on reset state, so that a switching tube Q3 is conducted, an internal state LIGHT D5 is kept in an off state, meanwhile, transistors Q4 and Q5 of the output conversion circuit are both turned off, an output state LIGHT D7 is kept in an off state, an output protection diode D6 outputs 0V, and an external data acquisition system obtains 0V from the SIG_OUT, so that the monitored equipment works normally.
Fourth step, when the monitored equipment fails, the RED LIGHT line RED_LIGHT of the equipment tower LIGHT is changed from 0V to +24V, the GREEN LIGHT line GREEN_LIGHT is changed from +24V to 0V, at the moment, the transistor Q2 of the input conversion circuit outputs +5V, the transistor Q1 outputs 0V, two level signals are respectively transmitted to the 11 pin and the 10 pin of the trigger IC2, according to the internal logic of the trigger IC2, the 13 pin output of the trigger IC2 is changed from 0V to +5V, so that the switching tube Q3 of the signal acquisition circuit is cut off, the internal state LIGHT D5 is turned on, meanwhile, the output conversion circuit transistors Q4 and Q5 are both turned on, the output state LIGHT D7 is turned on, the output protection diode D6 outputs +24V, and the external data acquisition system obtains +24V from the SIG_OUT, thereby indicating that the monitored equipment fails.
And fifthly, after the equipment to be monitored is overhauled and restarted, a RED LIGHT line RED_LIGHT of a tower LIGHT of the equipment is changed from +24V to 0V, a GREEN LIGHT line GREEN_LIGHT is changed from 0V to +24V, at the moment, an input conversion circuit transistor Q2 outputs 0V, a transistor Q1 outputs +5V, two level signals are respectively transmitted to a pin 11 and a pin 10 of a trigger IC2, a pin 13 of the trigger IC2 outputs 0V according to internal logic of the trigger IC2, so that a switching tube Q3 of the signal acquisition circuit is conducted, an internal state LIGHT D5 is extinguished, meanwhile, transistors Q4 and Q5 of the output conversion circuit are both turned off, an output state LIGHT D7 is extinguished, an output protection diode D6 outputs 0V, and an external data acquisition system obtains 0V from the SIG_OUT, so that the equipment to be monitored is recovered to be normal.
And sixthly, when the power supply of the fault equipment is turned off in the overhaul process of the monitored equipment, the RED LIGHT line RED_LIGHT and the GREEN LIGHT line GREEN_LIGHT of the equipment tower LIGHT are both 0V, at the moment, the input switching circuit transistors Q2 and Q1 are both output 0V, two level signals are respectively transmitted to the 11 pin and the 10 pin of the trigger IC2, according to the internal logic of the trigger IC2, the 13 pin of the trigger IC2 keeps outputting +5V, so that the switching tube Q3 of the signal acquisition circuit is kept off, the internal state LIGHT D5 is kept in a lighted state, meanwhile, the transistors Q4 and Q5 of the output switching circuit are kept on, the output state LIGHT D7 is kept in a lighted state, the output protection diode D6 is kept outputting +24V, the external data acquisition system obtains +24V from SIG_OUT, namely the monitored equipment is still in a fault state, namely the device still keeps the fault state after the monitored equipment is powered off, until the GREEN LIGHT line GRN_LIGHT of the equipment LIGHT is kept to be +24V, the RED LIGHT line REGHT is kept to be in a normal state, and the condition is recovered from the monitoring system, and the condition is obtained when the condition is recovered from the fifth step of the monitoring equipment is shown as follows.
Seventh, when the external power supply +24V is turned off in the overhaul process of the monitored equipment, the Faraday capacitor C7 of the energy storage circuit supplies standby power to the input conversion circuit and the signal acquisition circuit through the discharge current-limiting resistor R4 and the discharge protection diode D4, so that the 13 pin of the trigger IC2 of the signal acquisition circuit keeps the original output state of 0V or +5V, and the loss of a fault state is avoided.
And eighth, when the external power supply +24V power supply resumes power supply, the output state 0V or +5V held by the 13 pin of the signal acquisition circuit trigger IC2 is transmitted to the output conversion circuit, and is output to an external data acquisition system through the output protection diode D6, and the external data acquisition system judges whether the monitored equipment works normally according to whether the level obtained from the SIG_OUT is 0V or +24V.
Ninth, the running state of the monitored equipment can be intuitively judged from the internal state lamp D5 and the output state lamp D7 on the device, and when the internal state lamp D5 and the output state lamp D7 are in the off state, the running state of the monitored equipment is indicated to be normal; when the internal status lamp D5 and the output status lamp D7 are both in the lighted state, the monitored equipment is indicated to be in fault; when the internal status lamp D5 is on and the output status lamp D7 is off, the monitored equipment is in fault, and the external power supply of the device is interrupted.
Claims (2)
1. A tower lamp signal acquisition device is characterized in that: the device comprises a shell, wherein the shell consists of an upper cover (1), a main board (2) and a lower cover (3);
the surface of the upper cover (1) is respectively provided with a wiring terminal hole I (1-1), a wiring terminal hole II (1-2), an internal state lamp hole (1-3) and an output state lamp hole (1-4);
the main board (2) is provided with an acquisition circuit;
the lower cover (3) is fixed with the upper cover (1), a main board (2) is arranged in the upper cover (1) between the lower cover (3) and the upper cover (1), and an internal status lamp D5, an output status lamp D7, a wiring terminal J1 and a wiring terminal J2 on a collecting circuit of the main board (2) are correspondingly inserted into an internal status lamp hole (1-3), an output status lamp hole (1-4), a wiring terminal hole I (1-1) and a wiring terminal hole II (1-2) of the upper cover (1) respectively;
the acquisition circuit consists of a power supply circuit, an energy storage circuit, an input conversion circuit, a signal acquisition circuit and an output conversion circuit, wherein the power supply circuit supplies power for the energy storage circuit, the input conversion circuit and the signal acquisition circuit, the energy storage circuit supplies standby power for the input conversion circuit and the signal acquisition circuit, and the input conversion circuit, the signal acquisition circuit and the output conversion circuit are connected in series to form a whole path for signal acquisition, state identification and conversion output; the acquisition circuit is specifically connected with:
in the power supply circuit, the 7 pin of the DC-DC module IC1 is respectively connected with the cathode of the protection diode D1, the voltage stabilizing capacitor C1, one end of the voltage stabilizing capacitor C2 and the 1 pin +24V power supply of the wiring terminal J1, the anode of the protection diode D1, the voltage stabilizing capacitor C1 and the other end of the voltage stabilizing capacitor C2 are respectively connected with the 2 pin of the wiring terminal J1 and grounded, the 8 pin of the DC-DC module IC1 is respectively connected with the starting capacitor C13 and one end of the inductor L1 and the cathode of the protection diode D2, the other end of the starting capacitor C13 is connected with the 1 pin of the DC-DC module IC1, the other end of the inductor L1 is respectively connected with one end of the voltage stabilizing capacitor C3, the voltage stabilizing capacitor C4, the capacitor C5, the capacitor C6 and the internal power supply of the +5V, the other end of the feedback resistor R1 is respectively connected with the voltage stabilizing capacitor C3, the voltage stabilizing capacitor C4, the other end of the capacitor C5 and the other end of the feedback resistor C6 and grounded, and the other end of the feedback resistor R1 is respectively connected with one end of the resistor R2 and the 4 pin of the DC-DC module IC1 and the other end of the resistor IC1 and the resistor R2;
in the energy storage circuit, the cathode of a charging protection diode D3 is connected with one ends of a discharging current-limiting resistor R4 and a Farad capacitor C7 through a charging current-limiting resistor R3 respectively, the other end of the discharging current-limiting resistor R4 is connected with the anode of the discharging protection diode D4, the cathode of the discharging protection diode D4 and the anode of the charging protection diode D3 are connected with +5V internal power supply of the power supply circuit respectively, and the other end of the Farad capacitor C7 is grounded;
in the input conversion circuit, one ends of a voltage dividing resistor R5 and a voltage dividing resistor R6 are connected with a grid electrode of a transistor Q1, a source electrode of the transistor Q1 is connected with a +5V power supply through a pull-up resistor R7, a drain electrode of the transistor Q1 is respectively connected with the other end of the voltage dividing resistor R6, the 2 pin of a wiring terminal J2 and the ground, the other end of the voltage dividing resistor R5 is connected with the 1 pin of the wiring terminal J2, one ends of a voltage dividing resistor R8 and a voltage dividing resistor R9 are connected with the grid electrode of the transistor Q2, the source electrode of the transistor Q2 is connected with the +5V power supply through a pull-up resistor R10, the drain electrode of the transistor Q2 is connected with the other end of the voltage dividing resistor R9 and the ground, and the other end of the voltage dividing resistor R8 is connected with the 3 pins of the wiring terminal J2;
in the signal acquisition circuit, 3 pins, 4 pins, 5 pins, 6 pins, 7 pins and 8 pins of the trigger IC2 are grounded, 10 pins are respectively connected with a reset capacitor C8, a filter capacitor C9, one end of a pull-down resistor R11 and a source electrode of an input conversion circuit transistor Q1, the other end of the reset capacitor C8 is respectively connected with 9 pins, 14 pins of the trigger IC2, one end of a voltage stabilizing capacitor C11 and a pull-up resistor R13 and a +5V power supply, the other ends of the filter capacitor C9, the pull-down resistor R11 and the voltage stabilizing capacitor C11 are grounded, the other end of the pull-up resistor R13 is connected with an emitter electrode of a switch tube Q3 and one end of a current limiting resistor R14, the other end of the current limiting resistor R14 is connected with a collector electrode of the switch tube Q3 through an internal state lamp D5, one end of a filter capacitor C12 and the ground, the other end of the filter capacitor C12 is connected with a base electrode of the switch tube Q3 and the pin 13 of the trigger IC2, and the other end of the trigger IC2 is respectively connected with the pin 11 of the pull-down resistor R12, one end of the filter capacitor C10 and the source electrode of the input conversion circuit transistor Q2;
in the output conversion circuit, one end of a current limiting resistor R15 and a pull-down resistor R16 is connected with the grid electrode of a transistor Q4, the drain electrode of the transistor Q4 is connected with one ends of a current limiting resistor R18 and a pull-up resistor R19 through a current limiting resistor R17, the other end of the current limiting resistor R18 is connected with the grid electrode of a transistor Q5, the other end of the pull-up resistor R19 is connected with the source electrode of the transistor Q5, +24V power supply and the 1 pin of a wiring terminal J1, the drain electrode of the transistor Q5 is connected with the anode of an output protection diode D6 and one end of a current limiting resistor R20, the cathode of the protection diode D6 is connected with the 3 pin of the wiring terminal J1, and the other end of the current limiting resistor R20 is connected with the other end of the pull-down resistor R16 through an output status lamp D7 and the 4 pin of the wiring terminal J1;
the model of the DC-DC module IC1 is as follows: TPS5450;
the type of the flip-flop IC2 is: MC14013B.
2. A method for implementing the tower light signal acquisition device according to claim 1, comprising the following steps:
firstly, connecting an external power supply +24V power supply with a 1 pin of a wiring terminal J1; connecting the SIG_OUT end of an external data acquisition system with the 3-pin signal output end of the wiring terminal J1, and connecting the ground wire of the external data acquisition system with the 4-pin grounding end of the wiring terminal J1; the GREEN LIGHT line green_light of the monitored tower lamp is connected with the 1 pin of the wiring terminal J2, the RED LIGHT line red_light of the monitored tower lamp is connected with the 3 pin of the wiring terminal J2, and the ground line of the monitored tower lamp is connected with the 2 pin public ground GND of the wiring terminal J2;
secondly, when the device is connected with an external power supply of +24V, the external power supply of +24V is input to a pin 7 of a DC-DC module IC1, and is subjected to feedback control of a starting capacitor C13, feedback resistors R1 and R2, filtering and voltage stabilization of an inductor L1, a voltage stabilizing capacitor C3, a capacitor C4, a capacitor C5 and a capacitor C6, a +5V internal power supply is formed at the joint of the capacitor C6 and the feedback resistor R1, the +5V internal power supply supplies power to an energy storage circuit, an input conversion circuit and a signal acquisition circuit, the external power supply of +24V simultaneously supplies power to an output conversion circuit, after the internal power supply of +5V is connected with the energy storage circuit, the internal power supply is charged into a Farad capacitor C7 through a diode D3 and a charging current limiting resistor R3, and the Farad capacitor C7 is automatically stopped from being charged after the voltage of the Farad capacitor C7 reaches +5V;
third, when the monitored equipment is in a normal working state, a RED LIGHT line RED_LIGHT of the equipment tower LIGHT is 0V, a GREEN LIGHT line GREEN_LIGHT is +24V, at the moment, a source electrode of a transistor Q2 of an input conversion circuit outputs 0V, a source electrode of a transistor Q1 outputs +5V, two level signals are respectively transmitted to a pin 11 and a pin 10 of a trigger IC2, according to internal logic of the trigger IC2, a pin 13 output of the trigger IC2 is kept at a low level 0V in a power-on reset state, so that a switching tube Q3 is conducted, an internal state LIGHT D5 is kept in an off state, meanwhile, transistors Q4 and Q5 of an output conversion circuit are both turned off, an output state LIGHT D7 is kept in an off state, an output protection diode D6 outputs 0V, and an external data acquisition system obtains 0V from the SIG_OUT, so that the monitored equipment works normally;
fourth step, when the monitored equipment fails, the RED LIGHT line RED_LIGHT of the equipment tower LIGHT is changed from 0V to +24V, the GREEN LIGHT line GREEN_LIGHT is changed from +24V to 0V, at the moment, the transistor Q2 of the input conversion circuit outputs +5V, the transistor Q1 outputs 0V, two level signals are respectively transmitted to the 11 pin and the 10 pin of the trigger IC2, the 13 pin output of the trigger IC2 is changed from 0V to +5V according to the internal logic of the trigger IC2, so that the switching tube Q3 of the signal acquisition circuit is cut off, the internal state LIGHT D5 is turned on, meanwhile, the output conversion circuit transistors Q4 and Q5 are both turned on, the output state LIGHT D7 is turned on, the output protection diode D6 outputs +24V, and the external data acquisition system obtains +24V from the SIG_OUT, so as to indicate that the monitored equipment fails;
fifthly, after the equipment to be monitored is overhauled and restarted, a RED LIGHT line RED_LIGHT of a tower LIGHT of the equipment is changed from +24V to 0V, a GREEN LIGHT line GREEN_LIGHT is changed from 0V to +24V, at the moment, an input conversion circuit transistor Q2 outputs 0V, a transistor Q1 outputs +5V, two level signals are respectively transmitted to a pin 11 and a pin 10 of a trigger IC2, a pin 13 of the trigger IC2 outputs 0V according to internal logic of the trigger IC2, so that a switching tube Q3 of a signal acquisition circuit is conducted, an internal state LIGHT D5 is extinguished, transistors Q4 and Q5 of the output conversion circuit are both turned off, an output state LIGHT D7 is extinguished, an output protection diode D6 outputs 0V, and an external data acquisition system obtains 0V from the SIG_OUT, and the external data acquisition system indicates that the equipment to be monitored is recovered to be normal;
the method comprises the following steps that a sixth step, when the power supply of fault equipment is turned off in the overhaul process of monitored equipment, a RED LIGHT line RED_LIGHT and a GREEN LIGHT line GREEN_LIGHT of the equipment tower LIGHT are both 0V, at the moment, an input conversion circuit transistor Q2 and a GREEN LIGHT line GREEN_LIGHT are both 0V, two level signals are respectively transmitted to a pin 11 and a pin 10 of a trigger IC2, according to internal logic of the trigger IC2, a pin 13 of the trigger IC2 keeps outputting +5V, so that a switching tube Q3 of a signal acquisition circuit is kept off, an internal state LIGHT D5 is kept in a lighted state, meanwhile, transistors Q4 and Q5 of the output conversion circuit are kept on, an output state LIGHT D7 is kept in a lighted state, an output protection diode D6 is kept outputting +24V, an external data acquisition system obtains +24V from SIG_OUT, and the device still keeps the fault state until the monitored equipment is completely powered off, the GREEN LIGHT line GRN_LIGHT of the equipment LIGHT is kept to be +24V until the monitored equipment is completely powered off, and the principle of the RED LIGHT line GRN_LIGHT is changed to be 0, and the condition is recovered from the outside after the monitored equipment is normally, and the step is obtained;
seventh, when the external power supply +24V is turned off in the overhaul process of the monitored equipment, the Faraday capacitor C7 of the energy storage circuit supplies standby power to the input conversion circuit and the signal acquisition circuit through the discharge current-limiting resistor R4 and the discharge protection diode D4, so that the 13 pin of the trigger IC2 of the signal acquisition circuit keeps the original output state of 0V or +5V, and the loss of a fault state is avoided;
eighth, when the external power supply +24v power supply resumes the power supply, the output state 0V or +5v held by 13 pins of the signal acquisition circuit trigger IC2 is transmitted to the output conversion circuit, and is output to the external data acquisition system through the output protection diode D6, and the external data acquisition system judges whether the monitored equipment works normally according to whether the level obtained from sig_out is 0V or +24v;
ninth, the running state of the monitored equipment can be intuitively judged from the internal state lamp D5 and the output state lamp D7 on the device, and when the internal state lamp D5 and the output state lamp D7 are in the off state, the running state of the monitored equipment is indicated to be normal; when the internal status lamp D5 and the output status lamp D7 are both in the lighted state, the monitored equipment is indicated to be in fault; when the internal status lamp D5 is on and the output status lamp D7 is off, the monitored equipment is in fault, and the external power supply of the device is interrupted.
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