CN216083736U

CN216083736U - Intelligent safety production management and control system

Info

Publication number: CN216083736U
Application number: CN202122839533.7U
Authority: CN
Inventors: 朱军; 赵玉萌; 李传庆; 贾丽星; 曹哲
Original assignee: Guangzhou Wanbao Occupational Safety Affairs Co ltd
Current assignee: Guangzhou Wanbao Occupational Safety Affairs Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-03-18
Anticipated expiration: 2031-11-19

Abstract

The utility model provides an intelligent safe production control system, which effectively solves the problem of detection accuracy of the intelligent safe production control system caused by the fact that the existing intelligent safe production control system only is provided with a temperature sensor aiming at an alternating current contactor. The signal acquisition module further comprises a current detection circuit and a temperature detection circuit, wherein the current detection circuit detects a current signal of the motor by using a temperature sensor U1, calculates the current signal to obtain a first high level, and transmits the first high level to the temperature detection circuit, the temperature detection circuit detects a temperature signal of the alternating current contactor by using a thermistor PTCR, compares the temperature signal with the first high level to obtain an alarm signal, amplifies the alarm signal, and transmits the alarm signal to a control center through a signal transmission module, so that the detection accuracy of the intelligent safety production management and control system is improved.

Description

Intelligent safety production management and control system

Technical Field

The utility model relates to the field of safety management, in particular to an intelligent safety production management and control system.

Background

The intelligent safety production is always a constant and thorough slogan in production in China, so along with the development of technology, various electronic devices are applied to safety production including the field of building construction, and therefore, an intelligent safety production control system is gradually generated and used for carrying out safety detection on the production process.

In building construction, a smart safe production management and control system is particularly needed, therefore, the smart safe production management and control system is provided with a signal acquisition module comprising various sensors in a building mechanical device such as a construction elevator to detect the building mechanical device and transmits signals to a control center through a signal transmission module to ensure the safety of the construction elevator in the use process, but the adhesion phenomenon of an alternating current contactor is caused due to overhigh current of a motor in the use process of the construction elevator, so that the motor is burnt out, and finally the construction elevator fails to be used, the smart safe production management and control system only can detect the adhesion phenomenon of the alternating current contactor by arranging a temperature sensor on the alternating current contactor, when the temperature of the alternating current contactor rises, the adhesion phenomenon of the alternating current contactor is considered to occur, but the adhesion phenomenon of the alternating current contactor can not be correctly detected only by detecting the temperature of the alternating current contactor, it is also possible that ac contactor arouses because the temperature of environment and long-time work, has reduced the accuracy that wisdom safety in production management and control system detected.

The present invention therefore provides a new solution to this problem.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a smart safe production management and control system, which effectively solves the problem that the detection accuracy of the smart safe production management and control system is high because the conventional smart safe production management and control system only sets a temperature sensor for an alternating current contactor.

The technical scheme of its solution is, a wisdom safety in production management and control system, including signal acquisition module, signal transmission module, control center, signal acquisition module still includes current detection circuit, temperature detection circuit, current detection circuit utilizes temperature sensor U1 to detect the current signal of motor to obtain first high level after calculating current signal, and transmit first high level to temperature detection circuit, temperature detection circuit utilizes thermistor PTCR to detect ac contactor's temperature signal, and carries out the comparison back with temperature signal, obtains alarm signal with first high level, and transmits to control center through signal transmission module after amplifying alarm signal.

Further, the current detection circuit detects a current signal of the motor by using the temperature sensor U1, subtracts the current signal to obtain a difference signal, judges the difference signal to obtain a first high level, and transmits the first high level to the temperature detection circuit.

Further, the current detection circuit includes a resistor R1, one end of the resistor R1 is connected to an out pin of the current sensor U1, the other end of the resistor R1 is connected to a base of the transistor Q6 and one end of the resistor R16, the other end of the resistor R16 is connected to a VCC pin of the current sensor U1, one end of the resistor R2, one end of the resistor R11, an emitter of the transistor Q1, and one end of the resistor R12 are connected to a positive power VCC, an emitter of the transistor Q6 is connected to one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R4 is connected to one end of the resistor R6 and a non-inverting end of the operational amplifier U2B, an inverting end of the operational amplifier U2B is connected to the other end of the resistor R B, an output end of the operational amplifier U2B is connected to the other end of the resistor R B, a base of the transistor Q B and one end of the collector C B, the other end of the resistor R9 is connected with the base of the triode Q3, the collector of the triode Q3 is connected with one end of the resistor R12, the emitter of the triode Q3 is connected with one end of the resistor R10, and the other end of the capacitor C1 is connected with the other end of the resistor R10, the other end of the resistor R6, the other end of the resistor R5 and the gnd pin of the current sensor U1 in parallel and connected with the ground.

Further, the temperature detection circuit detects a temperature signal of the alternating current contactor by using the thermistor PTCR, compares the temperature signal, and then outputs an alarm signal by performing AND calculation on the temperature signal and the first high level, amplifies the alarm signal and then transmits the amplified alarm signal to the control center through the signal transmission module.

Further, the temperature detection circuit comprises a resistor R15, one end of a resistor R15 is connected with a collector of a triode Q3 in the current detection circuit, the other end of the resistor R15 is connected with a 14 pin of an AND gate U7B, a 15 pin of the AND gate U7B is connected with one end of a resistor R14, the other end of the resistor R14 is connected with a cathode of a thyristor Q2, an anode of the thyristor Q2 is respectively connected with one end of the resistor R19, one end of a thermistor PTCR and one end of a resistor R13, the other end of the resistor R19 is connected with one end of a resistor R2 in the current detection circuit and is connected with a power supply VCC, the other end of the positive polarity of the resistor R13 is connected with a non-inverting end of an operational amplifier U3B, an inverting end of the operational amplifier U3B is respectively connected with one end of the resistor R17, one end of a capacitor C2 and one end of a bidirectional regulator D1, the other end of a bidirectional regulator D1 is respectively connected with an output end of the operational U3B and an anode amplifier D3 of a diode D3, the negative electrode of the diode D3 is connected with one end of the capacitor C3 and the control electrode of the thyristor Q2 respectively, the output end of the AND gate U7B is connected with the positive electrode of the voltage regulator tube D4, the negative electrode of the voltage regulator tube D4 is connected with the non-inverting end of the operational amplifier U4B, the inverting end of the operational amplifier U4B is connected with one end of the resistor R18 and one end of the resistor R7 respectively, the output end of the operational amplifier U4B is connected with the other end of the resistor R7 and the signal transmission module respectively, the other end of the thermistor PTCR is connected with one end of the capacitor C3, the other end of the resistor R18, the other end of the capacitor C2 and the other end of the capacitor C1 in the current detection circuit in parallel connection and grounding.

The utility model realizes the following beneficial effects:

set up current detection circuit and temperature detection circuit in signal acquisition module, be used for detecting ac contactor and whether take place the adhesion phenomenon, it detects ac contactor to have avoided only setting up temperature sensor among the prior art to utilize current detection circuit, the problem of the accuracy that wisdom safety production management and control system detected ac contactor and take place the adhesion phenomenon has been improved, and amplify the alarm signal of output back and transmit to control center through signal transmission module, make the staff take place the adhesion phenomenon at ac contactor, for the safety in utilization of guaranteeing the construction elevator, handle ac contactor immediately.

Drawings

Fig. 1 is a schematic diagram of a current detection circuit of the present invention.

Fig. 2 is a schematic diagram of the temperature detection circuit of the present invention.

Detailed Description

The foregoing and other technical and functional aspects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

The utility model provides a wisdom safety in production management and control system, includes signal acquisition module, signal transmission module, management platform, signal transmission module includes signal comparison circuit and signal output circuit, signal comparison circuit compares the signal that signal acquisition module gathered to obtain the comparison signal, and judge the comparison signal, thereby start signal output circuit to with signal transmission to signal output circuit and management platform, signal output circuit calculates the signal, obtains the difference signal, and with signal output to management platform after judging the difference signal.

The current detection circuit comprises a resistor R1, one end of the resistor R1 is connected with an out pin of a current sensor U1, the other end of the resistor R1 is respectively connected with a base of a triode Q6 and one end of a resistor R16, the other end of the resistor R16 is respectively connected with a VCC pin of a current sensor U1, one end of a resistor R2, one end of a resistor R11, an emitter of a triode Q1 and one end of a resistor R12 are respectively connected with a positive power supply VCC, an emitter of the triode Q6 is respectively connected with one end of a resistor R6 and one end of a resistor R6, the other end of the resistor R6 is respectively connected with one end of a resistor R6 and a non-inverting end of an operational amplifier U2 6, an inverting end of the operational amplifier U2 6 is connected with the other end of the resistor R6, a base of the transistor Q6 and one end of the resistor R6 are respectively connected with an emitter of the triode Q6, the collector of the triode Q3 is connected with one end of the resistor R12, the emitter of the triode Q3 is connected with one end of the resistor R10, and the other end of the capacitor C1 is respectively connected with the other end of the resistor R10, the other end of the resistor R6, the other end of the resistor R5 and the gnd pin of the current sensor U1 and is connected with the ground in parallel;

the current detection circuit detects a current signal of a motor of the construction elevator by using a current sensor U1, the current sensor U1 can adopt a Hall current sensor with the type similar to AHKC-EKAA, the current signal is buffered by a triode Q6 and then transmitted to an operational amplifier U2B by using a resistor R4, the operational amplifier U2B performs subtraction operation on the current signal and a rated current signal of the motor to obtain a difference signal, the difference signal is the difference value between the current of the motor at the moment and the rated current, when the difference signal switches on a triode Q1, the current of the motor at the moment is normal, the current signal does not need to be processed in the next step, at the moment, the triode Q1 discharges the generated voltage to the ground through the resistor R8 and a capacitor C1 to protect the safety of the current detection circuit, and when the difference signal switches on the triode Q3, the current of the motor at the moment is higher than the rated current, at this time, the transistor Q3 generates a first high level and outputs the first high level to the temperature detection circuit.

The temperature detection circuit comprises a resistor R15, one end of a resistor R15 is connected with a collector of a triode Q3 in the current detection circuit, the other end of the resistor R15 is connected with a 14 pin of an AND gate U7B, a 15 pin of the AND gate U7B is connected with one end of a resistor R14, the other end of the resistor R14 is connected with a cathode of a thyristor Q2, an anode of the thyristor Q2 is respectively connected with one end of a resistor R19, one end of a thermistor PTCR and one end of a resistor R13, the other end of the resistor R19 is connected with one end of a resistor R2 in the current detection circuit and is connected with a positive power supply VCC, the other end of the resistor R13 is connected with a non-inverting end of an operational amplifier U3B, an inverting end of the operational amplifier U3B is respectively connected with one end of a resistor R17, one end of a capacitor C2 and one end of a bidirectional regulator D1, the other end of a bidirectional regulator D1 is respectively connected with an output end of an operational amplifier U3B and a positive electrode of a diode D3, and a negative electrode of a capacitor C3 in the current detection circuit are respectively connected with an output end of a capacitor C3, The output end of the AND gate U7B is connected with the anode of a voltage regulator tube D4, the cathode of the voltage regulator tube D4 is connected with the in-phase end of an operational amplifier U4B, the inverting end of the operational amplifier U4B is respectively connected with one end of a resistor R18 and one end of a resistor R7, the output end of the operational amplifier U4B is respectively connected with the other end of a resistor R7 and a signal transmission module, the other end of the thermistor PTCR is respectively connected with one end of a capacitor C3, the other end of a resistor R18, the other end of a capacitor C2 and the other end of a capacitor C1 in the current detection circuit and is connected with the ground in parallel;

the temperature detection circuit detects a temperature signal of an alternating current contactor by using a thermistor PTCR, the thermistor PTCR and a resistor R19 divide the voltage, one path of the detected temperature signal is transmitted to the non-inverting terminal of an operational amplifier U3B through a resistor R13, the other path of the detected temperature signal is transmitted to the inverting terminal of an operational amplifier U3B after being delayed through a resistor R17 and a capacitor C3, the operational amplifier U3B compares the two paths of temperature signals, when the operational amplifier U3B cannot conduct a diode D3, the temperature of the alternating current contactor is not changed at the moment, when the operational amplifier U3B conducts the diode D3, the temperature of the alternating current contactor is increased, at the moment, the diode D3 and the capacitor C3 conduct a thyristor Q2, the thyristor Q2 transmits the temperature signal to a 15 pin of an AND gate U7B through a resistor R14, a 14 pin of the AND gate U7B receives a first high level, and the temperature signal and the first high level are received by the AND gate U7B at the same time, and the AND gate U7B performs AND operation, the AND gate U7B outputs an alarm signal through a voltage stabilizing tube D4, namely, the fact that the AC contactor is adhered is judged, the alarm signal is amplified by the operational amplifier U4B and then transmitted to the signal transmission module, the signal transmission module transmits the alarm signal to the monitoring center for analysis, a worker is reminded that the AC contactor is adhered, and the AC contactor needs to be immediately processed to ensure the use safety of the construction elevator.

When the utility model is used, the current detection circuit utilizes a current signal detected by a current sensor U1 to be buffered by a triode Q6 and then transmitted to an operational amplifier U2B by a resistor R4, the operational amplifier U2B performs subtraction operation on the current signal and a rated current signal of a motor so as to obtain a difference signal, when the difference signal conducts the triode Q1, the current of the motor is normal at the moment, the current signal does not need to be processed in the next step, the triode Q1 discharges the generated voltage to the ground through the resistor R8 and a capacitor C1, when the difference signal conducts the triode Q3, the current of the motor is higher than the rated current at the moment, the triode Q3 generates a first high level and outputs the first high level to a temperature detection circuit, the temperature detection circuit utilizes a temperature signal of an alternating current contactor detected by a thermistor PTCR to be transmitted to the operational amplifier U3B for comparison, when the operational amplifier U3B cannot conduct the diode D3, it indicates that the temperature of the alternating current contactor is not changed, when the operational amplifier U3B conducts the diode D3, it indicates that the temperature of the alternating current contactor is rising, at this time, the diode D3 and the capacitor C3 conduct the thyristor Q2, the thyristor Q2 transmits the temperature signal to the 15 pin of the AND gate U7B through the resistor R14, the 14 pin of the AND gate U7B receives the first high level in the current detection circuit, when the AND gate U7B receives the temperature signal and the first high level at the same time, the AND gate U7B performs AND operation, the AND gate U7B outputs an alarm signal through the voltage stabilizing tube D4, that is, at this time, it is determined that the adhesion phenomenon occurs in the alternating current contactor, the alarm signal is amplified by the operational amplifier U4B and transmitted to the signal transmission module, the signal transmission module transmits the alarm signal to the monitoring center for analysis, and reminds the working personnel that the adhesion phenomenon occurs in the alternating current contactor, in order to ensure the use safety of the construction hoist, the alternating current contactor needs to be immediately treated.

The utility model realizes the following beneficial effects:

(1) the current detection circuit and the temperature detection circuit are arranged in the signal acquisition module and used for detecting whether the AC contactor is adhered or not, the current detection circuit is utilized for avoiding that only a temperature sensor is arranged to detect the AC contactor in the prior art, the accuracy of the intelligent safety production management and control system for detecting the adhesion of the AC contactor is improved, and the output alarm signal is amplified and then transmitted to the control center through the signal transmission module, so that the adhesion of a worker on the AC contactor is realized, and the AC contactor is immediately processed for ensuring the use safety of a construction lifter;

(2) carry out subtraction operation with the current signal of the motor that temperature sensor U1 detected in current detection circuit, and then the accurate difference that reachs between the current and the rated current of motor, also can know that the current of motor has exceeded the concrete value of rated current, and output first high level to temperature detection circuit, and temperature detection circuit is detecting ac contactor's temperature rising back, carry out and operation with temperature signal and first high level, and then judge that ac contactor has taken place the adhesion phenomenon, improved the accuracy that wisdom safety production management and control system detected ac contactor and has taken place the adhesion phenomenon.

Claims

1. The utility model provides a wisdom safety in production management and control system, includes signal acquisition module, signal transmission module, control center, a serial communication port, signal acquisition module still includes current detection circuit, temperature detection circuit, current detection circuit utilizes temperature sensor U1 to detect the current signal of motor to obtain first high level after calculating current signal, and transmit first high level to temperature detection circuit, temperature detection circuit utilizes thermistor PTCR to detect AC contactor's temperature signal, and carries out the comparison back with temperature signal, obtains alarm signal with first high level, and transmits to control center through signal transmission module after amplifying alarm signal.

2. The system as claimed in claim 1, wherein the current detection circuit detects a current signal of the motor by using a temperature sensor U1, subtracts the current signal to obtain a difference signal, determines the difference signal to obtain a first high level, and transmits the first high level to the temperature detection circuit.

3. The system as claimed in claim 2, wherein the current detection circuit includes a resistor R1, one end of the resistor R1 is connected to an out pin of the current sensor U1, the other end of the resistor R1 is connected to a base of the transistor Q6 and one end of the resistor R16, the other end of the resistor R16 is connected to a VCC pin of the current sensor U1, one end of the resistor R2, one end of the resistor R11, an emitter of the transistor Q1 and one end of the resistor R12 are connected to a positive power VCC, an emitter of the transistor Q6 is connected to one end of the resistor R4 and one end of the resistor R5, the other end of the resistor R4 is connected to one end of the resistor R6 and the same phase end of the operational amplifier U2B, an inverting end of the operational amplifier U2B is connected to the other end of the resistor R2, an output end of the operational amplifier U2B is connected to the other end of the resistor R11, the base of the transistor Q1 and one end of the resistor R9, the collector of the triode Q1 is connected with one end of the resistor R8 and one end of the capacitor C1, the other end of the resistor R9 is connected with the base of the triode Q3, the collector of the triode Q3 is connected with one end of the resistor R12, the emitter of the triode Q3 is connected with one end of the resistor R10, the other end of the capacitor C1 is connected with the other end of the resistor R10, the other end of the resistor R6, the other end of the resistor R5 and the gnd pin of the current sensor U1 in parallel connection and grounding.

4. The system as claimed in claim 1, wherein the temperature detection circuit detects a temperature signal of the ac contactor by using a thermistor PTCR, compares the temperature signal with a first high level, and outputs an alarm signal by performing an and calculation on the temperature signal, amplifies the alarm signal, and transmits the amplified alarm signal to the control center through the signal transmission module.

5. The system according to claim 4, wherein the temperature detection circuit comprises a resistor R15, one end of the resistor R15 is connected to a collector of a transistor Q3 in the current detection circuit, the other end of the resistor R15 is connected to a 14 pin of an and gate U7B, a 15 pin of the and gate U7B is connected to one end of a resistor R14, the other end of the resistor R14 is connected to a cathode of a thyristor Q2, an anode of the thyristor Q2 is connected to one end of a resistor R19, one end of a thermistor PTCR, one end of a resistor R13, the other end of the resistor R19 is connected to one end of a resistor R2 in the current detection circuit and connected to a positive power VCC, the other end of the resistor R13 is connected to a common phase terminal of an operational amplifier U3B, inverting terminals of the operational amplifier U3B are connected to one end of a resistor R17, one end of a capacitor C2, one end of a bidirectional regulator D5, and the other end of the bidirectional regulator D1 is connected to an output terminal of the operational amplifier U3B The anode of the diode D3, the cathode of the diode D3 are connected to one end of a capacitor C3 and the control electrode of a thyristor Q2 respectively, the output end of the AND gate U7B is connected to the anode of a voltage regulator tube D4, the cathode of the voltage regulator tube D4 is connected to the non-inverting end of the operational amplifier U4B, the inverting end of the operational amplifier U4B is connected to one end of a resistor R18 and one end of a resistor R7 respectively, the output end of the operational amplifier U4B is connected to the other end of the resistor R7 and the signal transmission module respectively, the other end of the thermistor PTCR is connected to one end of a capacitor C3, the other end of the resistor R18, the other end of the capacitor C2 and the other end of a capacitor C1 in the current detection circuit and connected to ground in parallel.