Electric roller emergency system

Abstract

The utility model discloses an emergency system, belongs to the technical field of electric rollers, and particularly relates to an electric roller emergency system which comprises a main control chip, a power module, a display module, a communication module, a switching control module and an alarm module. The main control chip is respectively connected with the power supply module, the display module, the communication module, the switching control module and the alarm module; the power supply module is composed of a dual-power-supply circuit, a voltage sampling circuit and a frequency sampling circuit. According to the utility model, the switching control module is composed of the switch state switching monitoring circuit and the switch control circuit, the switch state switching monitoring circuit is added to monitor the switching state of the circuit breaker, and the main control chip is used for controlling and sending out a control instruction; and the switch control circuit completes the functions of switching, double switching, alarming and the like of the common power supply and the standby power supply within several milliseconds, so that the power utilization reliability of the electric roller in a power-off occasion is improved.

Description

Technical Field

[0001] The utility model discloses an emergency system, belonging to the technical field of electric rollers, and particularly relates to an emergency system for electric rollers. Background Technique

[0002] An electric roller is a device commonly used in a material conveying system. An electric motor is installed inside the electric roller, usually a DC motor or a three-phase asynchronous motor. These motors transmit power to the roller shaft through a transmission system (such as gears, belts, etc.). The rotation of the motor is transmitted to the roller shaft through the transmission system. The transmission system usually includes components such as a gearbox, a coupling, and a pulley to ensure that the rotational speed and torque output by the motor are suitable for the working requirements of the roller. The roller is usually made of a steel pipe, and its outer surface is usually coated with rubber or other wear-resistant materials. These rollers are installed under the conveyor belt to drive the conveyor belt to run.

[0003] When the electric motor starts, it drives the roller shaft to rotate. Through the rotation of the roller, they contact the conveyor belt and apply a driving force, so that the materials on the conveyor belt are driven to move. The speed and direction of the electric roller can be adjusted by controlling the current or voltage of the motor, so as to realize the speed regulation and direction control of the material conveying system.

[0004] In the prior art, the equipment in the conveying system is often equipped with an emergency system to prevent the electric roller from working normally in case of a power failure. The emergency system needs to maintain a stable operating state. When a power failure occurs, the switching time between the normal power supply and the backup power supply is required to be within 10 ms to ensure timely power supply, which places higher requirements on the reliability of the control circuit of the emergency system. Content of the Utility Model

[0005] Purpose of the utility model: To provide an emergency system for electric rollers to solve the above-mentioned problems.

[0006] Technical solution: An emergency system for electric rollers includes: a main control chip, a power supply module, a display module, a communication module, a switching control module, and an alarm module;

[0007] The main control chip is respectively connected to the power supply module, the display module, the communication module, the switching control module, and the alarm module;

[0008] The power supply module is composed of a dual-power circuit, a voltage sampling circuit, and a frequency sampling circuit;

[0009] The switching control module is composed of a switch state switching monitoring circuit and a switch control circuit.

[0010] In a further embodiment, the dual-power circuit includes: transformer TR1, transformer TR2, polarized capacitor C1, polarized capacitor C2, polarized capacitor C3, polarized capacitor C4, polarized capacitor C5, diode D1, diode D2, voltage regulator U1, voltage regulator U2, rectifier BR1, rectifier BR2;

[0011] Voltage is input to the input ends of the transformer TR1 and the transformer TR2. The output end of the transformer TR1 is connected to the input end of the rectifier BR1, and the output end of the transformer TR2 is connected to the input end of the rectifier BR2. The positive output of the rectifier BR1 is simultaneously connected to the positive pole of the polarized capacitor C1 and the positive pole of the diode D1. The positive output of the rectifier BR2 is simultaneously connected to the positive pole of the polarized capacitor C3 and the positive pole of the diode D2. The 3rd pin of the voltage regulator U1 is simultaneously connected to the negative poles of the diode D1 and the diode D2. The 1st pin of the voltage regulator U1 is connected to the positive pole of the polarized capacitor C2 and outputs 24V voltage. The 2nd pin of the voltage regulator U1 is simultaneously connected to the negative poles of the polarized capacitor C1, the polarized capacitor C2, and the polarized capacitor C3 and is grounded. The 3rd pin of the voltage regulator U2 is connected to the positive pole of the polarized capacitor C4 and inputs 24V voltage. The 1st pin of the voltage regulator U2 is connected to the positive pole of the polarized capacitor C5 and outputs 5V voltage. The 2nd pin of the voltage regulator U2 is simultaneously connected to the negative poles of the polarized capacitor C4 and the polarized capacitor C5 and is grounded.

[0012] In a further embodiment, the main control chip is composed of a single-chip microcomputer.

[0013] In a further embodiment, the dual-power circuit outputs two voltages to provide working voltages for the emergency system and the electric roller respectively. At the same time, the voltage sampling circuit and the frequency sampling circuit are connected to the dual-power circuit to detect the voltage value and frequency magnitude of the output voltage and output the detection results to the main control chip.

[0014] In a further embodiment, the display module is used to display the current working state of the electric roller, and the communication module is used to connect to an external terminal.

[0015] In a further embodiment, the switch state switching monitoring circuit consists of two paths and is used to monitor the switching state of the normal power supply and the standby power supply. The circuit converts the states of the two power supplies into high and low levels through the monitoring circuit and then transmits them to the main control chip for judgment, and then controls the two power supplies.

[0016] In a further embodiment, the switch state switching monitoring circuit includes switches including: optocoupler U3, switch SW1, resistor R1, resistor R2;

[0017] The 1st pin of the optocoupler U3 inputs 24V voltage, the 5th pin inputs 5V voltage, the 2nd pin is connected to one end of the resistor R1, the 4th pin is connected to one end of the resistor R2 and is connected to the main control chip. One end of the switch SW1 is connected to one end of the resistor R1 and the other end is grounded. The other end of the resistor R2 is grounded.

[0018] In a further embodiment, the switch control circuit includes: resistor R5, resistor R6, triode Q1, diode D3, relay RL1, resistor R7, resistor R8, triode Q2, diode D4, relay RL2, resistor R9, resistor R10, triode Q3, diode D5, relay RL3;

[0019] One end of the resistor R5 inputs 5V voltage, the other end is connected to one end of the resistor R6 and is connected to the main control chip. The other end of the resistor R6 is connected to the base of the triode Q1. The emitter of the triode Q1 is grounded. The collector of the triode Q1 is simultaneously connected to the positive electrode of the diode D3 and the 2nd pin of the relay RL1. The negative electrode of the diode D3 is connected to the 1st pin of the relay RL1 and inputs 24V voltage. The 3rd pin and the 4th pin of the relay RL1 are connected to the power supply. One end of the resistor R7 inputs 5V voltage, the other end is connected to one end of the resistor R8 and is connected to the main control chip. The other end of the resistor R8 is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded. The collector of the triode Q2 is simultaneously connected to the positive electrode of the diode D4 and the 2nd pin of the relay RL2. The negative electrode of the diode D4 is connected to the 1st pin of the relay RL2 and inputs 24V voltage. One end of the resistor R9 inputs 5V voltage, the other end is connected to one end of the resistor R10 and is connected to the main control chip. The other end of the resistor R10 is connected to the base of the triode Q3. The emitter of the triode Q3 is grounded. The collector of the triode Q3 is simultaneously connected to the positive electrode of the diode D5 and the 2nd pin of the relay RL3. The negative electrode of the diode D5 is connected to the 1st pin of the relay RL3 and inputs 24V voltage. The 3rd pin and the 4th pin of the relay RL3 are connected to the power supply. The 5th pin and the 6th pin of the relay RL1 and the 5th pin and the 6th pin of the relay RL3 are simultaneously connected to the 3rd pin and the 4th pin of the relay RL2 to connect to the power supply. The 5th pin and the 6th pin of the relay RL2 are connected to the electric roller.

[0020] Beneficial effects: The utility model monitors the switching state of the circuit breaker by adding a switching state monitoring circuit, and issues a control instruction through the main control chip. The switch control circuit can complete functions such as switching between the normal power supply and the standby power supply, double breaking, and alarming within a few milliseconds, thereby improving the reliability of the electric roller in the power-off situation. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the emergency system of the utility model.

[0022] Figure 2 It is a schematic diagram of the dual-power circuit of the utility model.

[0023] Figure 3 It is a schematic diagram of the switching state monitoring circuit of the utility model.

[0024] Figure 4 It is a schematic diagram of the switch control circuit of the utility model. Detailed Embodiment

[0025] Next, the technical solutions of the utility model will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the utility model without creative work shall fall within the protection scope of the utility model.

[0026] In the description of the utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific situations. In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] An electric roller emergency system, as Figure 1 shown, includes: a main control chip, a power supply module, a display module, a communication module, a switching control module, and an alarm module;

[0029] The main control chip is respectively connected to the power supply module, the display module, the communication module, the switching control module, and the alarm module;

[0030] The power supply module is composed of a dual - power circuit, a voltage sampling circuit, and a frequency sampling circuit;

[0031] The switching control module is composed of a switch - state switching monitoring circuit and a switch control circuit.

[0032] In one embodiment, as Figure 2 shown, the dual - power circuit includes: transformer TR1, transformer TR2, polar capacitor C1, polar capacitor C2, polar capacitor C3, polar capacitor C4, polar capacitor C5, diode D1, diode D2, voltage regulator U1, voltage regulator U2, rectifier BR1, rectifier BR2;

[0033] The input ends of transformer TR1 and transformer TR2 input voltages. The output end of transformer TR1 is connected to the input end of rectifier BR1, and the output end of transformer TR2 is connected to the input end of rectifier BR2. The positive output of rectifier BR1 is simultaneously connected to the positive pole of polar capacitor C1 and the positive pole of diode D1. The positive output of rectifier BR2 is simultaneously connected to the positive pole of polar capacitor C3 and the positive pole of diode D2. The 3 - pin of voltage regulator U1 is simultaneously connected to the negative poles of diode D1 and diode D2. The 1 - pin of voltage regulator U1 is connected to the positive pole of polar capacitor C2 and outputs 24V voltage. The 2 - pin of voltage regulator U1 is simultaneously connected to the negative poles of polar capacitor C1, polar capacitor C2, and polar capacitor C3 and is grounded. The 3 - pin of voltage regulator U2 is connected to the positive pole of polar capacitor C4 and inputs 24V voltage. The 1 - pin of voltage regulator U2 is connected to the positive pole of polar capacitor C5 and outputs 5V voltage. The 2 - pin of voltage regulator U2 is simultaneously connected to the negative poles of polar capacitor C4 and polar capacitor C5 and is grounded.

[0034] Specifically, the dual - power circuit provides two kinds of voltages, 24V and 5V, as Figure 2As shown. The circuit has two inputs. The 24V voltage of the dual-power supply circuit is composed of a power transformer, a bridge rectifier, a polar capacitor, a voltage regulator, and a protection diode. When the circuit is working, the two 220V (common power supply and standby power supply) are stepped down by the power transformer to output an alternating voltage, which is then converted into pulsating direct current by the bridge rectifier. After capacitor filtering and unidirectional protection by the diode, finally, a 24V direct current voltage is output through the three-terminal voltage regulator.

[0035] The 5V direct current voltage is composed of two capacitors. The input voltage is 24V. It is filtered by 1 capacitor to reduce ripple, and then the voltage is regulated by the voltage regulator to output 5V voltage. This circuit has a very low static current. When the output current decreases, the static current changes with the load and the efficiency is improved. Finally, it is filtered by another capacitor and then output to supply power to the chip and components.

[0036] In one embodiment, the main control chip is composed of a single chip microcomputer.

[0037] In one embodiment, as Figure 1 As shown, the dual-power supply circuit outputs two voltages to provide working voltages for the emergency system and the electric roller respectively. At the same time, the voltage sampling circuit and the frequency sampling circuit are connected to the dual-power supply circuit to detect the voltage value and frequency of the output voltage, and output the detection results to the main control chip.

[0038] In one embodiment, the display module is used to display the current working state of the electric roller, and the communication module is used to connect to an external terminal.

[0039] In one embodiment, the switch state switching monitoring circuit consists of two paths, which is a circuit used to monitor the switching state between the common power supply and the standby power supply. The states of the two power supplies are converted into high and low levels through the monitoring circuit and then transmitted to the main control chip for judgment, and then the two power supplies are controlled.

[0040] In one embodiment, as Figure 3 As shown, the switch state switching monitoring circuit includes switches: optocoupler U3, switch SW1, resistor R1, resistor R2;

[0041] The 1st pin of the optocoupler U3 inputs 24V voltage, the 5th pin inputs 5V voltage, the 2nd pin is connected to one end of the resistor R1, the 4th pin is connected to one end of the resistor R2 and is connected to the main control chip. One end of the switch SW1 is connected to one end of the resistor R1, and the other end is grounded. The other end of the resistor R2 is grounded.

[0042] Specifically, to improve stability, the circuit uses an optocoupler for transmission to ensure the stability and safety of signals. The specific principle is as follows: when the relay closes, a closed loop is formed by the 24V power supply, the internal light-emitting diode of the optocoupler, and the current-limiting resistor, generating a drive current to light up the internal light-emitting diode of the optocoupler. This prompts the photosensitive triode at the other end of the optocoupler to conduct (the emitter circuit mainly serves to limit the current), causing the emitter of the optoelectronic triode to output a 5V high level. This high level is received by the chip to determine the state of the circuit breaker; otherwise, a low level is output. This circuit not only isolates the influence of the input circuit on the chip and prevents the chip from burning out in case of a fault, but also realizes the conversion of two-level power supplies, making the circuit operation more stable.

[0043] If the switch of the normal power supply is pressed, it indicates that the system is in the state of being powered by the normal power supply. If the standby power supply is pressed, it indicates that the system is in the state of being powered by the standby power supply. If neither of the two switches is pressed, it indicates that the system is in the double-off state.

[0044] In one embodiment, as Figure 4 shown, the switch control circuit includes: resistor R5, resistor R6, triode Q1, diode D3, relay RL1, resistor R7, resistor R8, triode Q2, diode D4, relay RL2, resistor R9, resistor R10, triode Q3, diode D5, relay RL3;

[0045] One end of the resistor R5 inputs a 5V voltage, and the other end is connected to one end of the resistor R6 and is connected to the main control chip. The other end of the resistor R6 is connected to the base of the triode Q1. The emitter of the triode Q1 is grounded. The collector of the triode Q1 is simultaneously connected to the positive electrode of the diode D3 and the 2nd pin of the relay RL1. The negative electrode of the diode D3 is connected to the 1st pin of the relay RL1 and inputs a 24V voltage. The 3rd pin and the 4th pin of the relay RL1 are connected to the power supply. One end of the resistor R7 inputs a 5V voltage, and the other end is connected to one end of the resistor R8 and is connected to the main control chip. The other end of the resistor R8 is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded. The collector of the triode Q2 is simultaneously connected to the positive electrode of the diode D4 and the 2nd pin of the relay RL2. The negative electrode of the diode D4 is connected to the 1st pin of the relay RL2 and inputs a 24V voltage. One end of the resistor R9 inputs a 5V voltage, and the other end is connected to one end of the resistor R10 and is connected to the main control chip. The other end of the resistor R10 is connected to the base of the triode Q3. The emitter of the triode Q3 is grounded. The collector of the triode Q3 is simultaneously connected to the positive electrode of the diode D5 and the 2nd pin of the relay RL3. The negative electrode of the diode D5 is connected to the 1st pin of the relay RL3 and inputs a 24V voltage. The 3rd pin and the 4th pin of the relay RL3 are connected to the power supply. The 5th pin and the 6th pin of the relay RL1 and the 5th pin and the 6th pin of the relay RL3 are simultaneously connected to the 3rd pin and the 4th pin of the relay RL2 to connect to the power supply. The 5th pin and the 6th pin of the relay RL2 are connected to the electric roller.

[0046] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or alterations derived therefrom are still within the protection scope of the present utility model.

Claims

1. An electric roller emergency system, characterized in that, The emergency system includes: a main control chip, a power supply module, a display module, a communication module, a switching control module, and an alarm module; The main control chip is respectively connected to the power supply module, the display module, the communication module, the switching control module, and the alarm module; The power supply module consists of a dual-power circuit, a voltage sampling circuit, and a frequency sampling circuit; The switching control module consists of a switch state switching monitoring circuit and a switch control circuit.

2. The emergency system of an electric roller according to claim 1, wherein The dual-power circuit includes: a transformer TR1, a transformer TR2, a polar capacitor C1, a polar capacitor C2, a polar capacitor C3, a polar capacitor C4, a polar capacitor C5, a diode D1, a diode D2, a voltage regulator U1, a voltage regulator U2, a rectifier BR1, and a rectifier BR2; Input voltages are applied to the input terminals of the transformer TR1 and the transformer TR2. The output terminal of the transformer TR1 is connected to the input terminal of the rectifier BR1, and the output terminal of the transformer TR2 is connected to the input terminal of the rectifier BR2. The positive output of the rectifier BR1 is simultaneously connected to the positive electrode of the polar capacitor C1 and the positive electrode of the diode D1. The positive output of the rectifier BR2 is simultaneously connected to the positive electrode of the polar capacitor C3 and the positive electrode of the diode D2. The 3rd pin of the voltage regulator U1 is simultaneously connected to the negative electrode of the diode D1 and the negative electrode of the diode D2. The 1st pin of the voltage regulator U1 is connected to the positive electrode of the polar capacitor C2 and outputs 24V voltage. The 2nd pin of the voltage regulator U1 is simultaneously connected to the negative electrode of the polar capacitor C1, the negative electrode of the polar capacitor C2, and the negative electrode of the polar capacitor C3 and is grounded. The 3rd pin of the voltage regulator U2 is connected to the positive electrode of the polar capacitor C4 and inputs 24V voltage. The 1st pin of the voltage regulator U2 is connected to the positive electrode of the polar capacitor C5 and outputs 5V voltage. The 2nd pin of the voltage regulator U2 is simultaneously connected to the negative electrode of the polar capacitor C4 and the negative electrode of the polar capacitor C5 and is grounded.

3. The emergency system of an electric roller according to claim 1, characterized in that, The main control chip is composed of a single-chip microcomputer.

4. The emergency system of an electric roller according to claim 1, wherein, The dual-power circuit outputs two voltages to provide working voltages for the emergency system and the electric roller respectively. At the same time, the voltage sampling circuit and the frequency sampling circuit are connected to the dual-power circuit to detect the voltage value and frequency magnitude of the output voltage and output the detection results to the main control chip.

5. The emergency system of an electric roller according to claim 1, characterized in that, The display module is used to display the current working state of the electric roller, and the communication module is used to connect to an external terminal.

6. The emergency system of an electric roller according to claim 1, wherein The switch state switching monitoring circuit consists of two paths and is used to monitor the switching state of the normal power supply and the standby power supply. The circuit converts the states of the two power supplies into high and low levels through the monitoring circuit and then transmits them to the main control chip for judgment, and then controls the two power supplies.

7. The emergency system of an electric roller according to claim 6, wherein The switch state switching monitoring circuit includes a switch including: an optocoupler U3, a switch SW1, a resistor R1, and a resistor R2; The 1st pin of the optocoupler U3 inputs 24V voltage, the 5th pin inputs 5V voltage, the 2nd pin is connected to one end of the resistor R1, the 4th pin is connected to one end of the resistor R2 and is connected to the main control chip. One end of the switch SW1 is connected to one end of the resistor R1, and the other end is grounded. The other end of the resistor R2 is grounded.

8. The emergency system of an electric roller according to claim 1, characterized in that, The switch control circuit includes: resistor R5, resistor R6, triode Q1, diode D3, relay RL1, resistor R7, resistor R8, triode Q2, diode D4, relay RL2, resistor R9, resistor R10, triode Q3, diode D5, relay RL3; One end of the resistor R5 inputs 5V voltage, and the other end is connected to one end of the resistor R6 and is connected to the main control chip. The other end of the resistor R6 is connected to the base of the triode Q1. The emitter of the triode Q1 is grounded. The collector of the triode Q1 is simultaneously connected to the positive electrode of the diode D3 and the 2nd pin of the relay RL1. The negative electrode of the diode D3 is connected to the 1st pin of the relay RL1 and inputs 24V voltage. The 3rd pin and the 4th pin of the relay RL1 are connected to the power supply. One end of the resistor R7 inputs 5V voltage, and the other end is connected to one end of the resistor R8 and is connected to the main control chip. The other end of the resistor R8 is connected to the base of the triode Q2. The emitter of the triode Q2 is grounded. The collector of the triode Q2 is simultaneously connected to the positive electrode of the diode D4 and the 2nd pin of the relay RL2. The negative electrode of the diode D4 is connected to the 1st pin of the relay RL2 and inputs 24V voltage. One end of the resistor R9 inputs 5V voltage, and the other end is connected to one end of the resistor R10 and is connected to the main control chip. The other end of the resistor R10 is connected to the base of the triode Q3. The emitter of the triode Q3 is grounded. The collector of the triode Q3 is simultaneously connected to the positive electrode of the diode D5 and the 2nd pin of the relay RL3. The negative electrode of the diode D5 is connected to the 1st pin of the relay RL3 and inputs 24V voltage. The 3rd pin and the 4th pin of the relay RL3 are connected to the power supply. The 5th pin and the 6th pin of the relay RL1 and the 5th pin and the 6th pin of the relay RL3 are simultaneously connected to the 3rd pin and the 4th pin of the relay RL2 to connect to the power supply. The 5th pin and the 6th pin of the relay RL2 are connected to the electric roller.

Images