Abnormal start monitoring device during elevator maintenance

Abstract

The utility model relates to an abnormal start monitoring device during elevator maintenance, which comprises a current detection module, a voltage detection module, a level detection module and a control module, and the current detection module, the voltage detection module and the level detection module are all connected with the control module. The current detection module, the voltage detection module and the level detection module are respectively arranged at appointed positions in the elevator starting circuit, namely, the current detection module, the voltage detection module and the level detection module are respectively and electrically connected with the elevator starting circuit through the appointed positions in the elevator starting circuit. When the elevator maintenance personnel is maintaining the elevator, although the elevator maintenance personnel can carry out power-off processing, abnormal power supply of the elevator may be abnormal due to the fact that the elevator is abnormal, and therefore abnormal power-on of the elevator may occur, current and voltage monitoring can be achieved through the current detection module and the voltage detection module; it is ensured that abnormal starting of the elevator caused by abnormal voltage or current at the designated position in the elevator starting circuit is avoided, stable operation of the elevator maintenance power source is detected through the level detection module, and the safety of elevator maintenance personnel is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of elevator maintenance monitoring technology, and in particular relates to an abnormal start monitoring device during elevator maintenance. Background Technology

[0002] With national economic development, accelerated urbanization, and improved building functions, elevator coverage in buildings is increasing, and the number of elevators is rising dramatically. Although elevator technology is also improving, the frequency of malfunctions is also increasing due to the growing number of elevators.

[0003] While some elevators now possess self-repair capabilities, these are limited to minor malfunctions. In the vast majority of cases, professional elevator maintenance personnel still need to arrive on-site for manual repairs after an elevator malfunctions.

[0004] In most elevator maintenance operations, maintenance personnel need to be inside the elevator shaft, either above or below the elevator car, to troubleshoot and repair faults. When maintenance personnel are inside the elevator shaft above or below the elevator car, they need to ensure that the elevator does not start abnormally. If the elevator starts abnormally, it will pose a great safety hazard to the maintenance personnel, which may result in death by falling or mechanical compression.

[0005] Therefore, how to monitor abnormal elevator starts when elevator maintenance personnel are in the elevator shaft to ensure that the elevator does not start abnormally during this period and to guarantee the safety of elevator maintenance personnel is a technical problem that urgently needs to be solved. Utility Model Content

[0006] The purpose of this utility model is to provide an abnormal start monitoring device for elevator maintenance, which is used to monitor abnormal starts of the elevator when elevator maintenance personnel are in the elevator shaft to ensure that the elevator will not start abnormally during this period and to ensure the safety of elevator maintenance personnel.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0008] An abnormal start monitoring device for elevator maintenance includes a current detection module, a voltage detection module, a level detection module, and a control module, wherein the current detection module, voltage detection module, and level detection module are all connected to the control module;

[0009] The current detection module, voltage detection module, and level detection module are each located at a designated position in the elevator starting circuit, meaning that the current detection module, voltage detection module, and level detection module are electrically connected to the elevator starting circuit through designated positions in the elevator starting circuit.

[0010] Preferably, the current detection module is model 3UF7933-0BA00-0.

[0011] Preferably, the voltage detection module is model DAQM-4103.

[0012] Preferably, the level detection module includes a level detection unit comprising a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first comparator, a second comparator, a third comparator, a first diode, a second diode, a first NOT gate, a second NOT gate, a third NOT gate, an OR gate, a first chip, a second chip, and a limit switch.

[0013] The input terminal of the first resistor is connected to the voltage input terminal, the output terminal of the first resistor is grounded, the adjustable terminal of the first resistor is connected to the non-inverting input terminal of the first comparator, the inverting input terminal of the first comparator is connected to the inverting input terminal of the third comparator, and the non-inverting input terminal of the third comparator is grounded through the third resistor.

[0014] The output terminal of the first comparator is connected to the non-inverting input terminal of the second comparator and the inverting input terminal of the third comparator, respectively. The inverting input terminal of the second comparator is connected to the adjustable terminal of the second resistor.

[0015] The output of the second comparator is connected to the input of the first NOT gate. The output of the first NOT gate is connected to the fourth resistor and the first input of the OR gate, respectively. The output of the OR gate is connected to a limit switch, and the other end of the limit switch is grounded. The second input of the OR gate is connected to the output of the third NOT gate. The other end of the fourth resistor is connected to the positive terminal of the first diode, and the negative terminal of the first diode is grounded.

[0016] The A1 port of the first chip is connected to the fifth resistor and the power input terminal respectively, the A2 port is connected to the fifth resistor and the sixth resistor respectively, the A3 and A4 ports are both connected to the sixth resistor and the capacitor, the other end of the capacitor is grounded, and the A5 port is connected to the B2 interface of the second chip and the A5 port of the first chip.

[0017] The B4 port of the second chip is connected to the first input terminal of the third NOT gate. The second input terminal of the third NOT gate is connected to the output terminal of the second NOT gate and the seventh resistor. The other end of the seventh resistor is connected to the positive terminal of the second diode. The negative terminal of the second diode is grounded. The input terminal of the second NOT gate is connected to the output terminal of the third comparator.

[0018] Preferably, the first resistor and the second resistor are both sliding resistors, and the first diode and the second diode are both light-emitting diodes.

[0019] Preferably, it also includes an early warning module, which is connected to the control module.

[0020] The beneficial effects of this utility model include:

[0021] This utility model provides an abnormal start monitoring device for elevator maintenance, comprising a server housing, a current detection module, a voltage detection module, a level detection module, and a control module. The current detection module, voltage detection module, and level detection module are all connected to the control module. These modules are respectively positioned at designated locations within the elevator start circuit, meaning they are electrically connected to the elevator start circuit through these designated locations. Even when elevator maintenance personnel are repairing the elevator and the power is cut off, abnormal power supply issues may still occur due to elevator malfunctions. The current and voltage detection modules monitor the current and voltage, ensuring that no abnormal voltage or current occurs at the designated locations in the elevator start circuit, preventing abnormal elevator start-up. The level detection module detects the stable operation of the elevator maintenance power supply, ensuring the safety of elevator maintenance personnel. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the circuit structure of the level detection module in the abnormal start monitoring device for elevator maintenance according to this utility model. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0024] The following is in conjunction with the appendix Figure 1 The present invention will be further described in detail below:

[0025] Example 1

[0026] See appendix Figure 1 As shown, an abnormal start monitoring device for elevator maintenance includes a current detection module, a voltage detection module, a level detection module, and a control module. The current detection module, voltage detection module, and level detection module are all connected to the control module. The current detection module, voltage detection module, and level detection module are each located at a designated position in the elevator start circuit; that is, they are electrically connected to the elevator start circuit through designated positions within the elevator start circuit. In this embodiment, the current detection module is model 3UF7933-0BA00-0, and the voltage detection module is model DAQM-4103. Both the voltage detection module and the current detection module are connected to...

[0027] Example 2

[0028] Based on Embodiment 1, the level detection module includes a level detection unit comprising a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first comparator, a second comparator, a third comparator, a first diode, a second diode, a first NOT gate, a second NOT gate, a third NOT gate, an OR gate, a first chip, a second chip, and a limit switch.

[0029] The input terminal of the first resistor is connected to the voltage input terminal, the output terminal of the first resistor is grounded, the adjustable terminal of the first resistor is connected to the non-inverting input terminal of the first comparator, the inverting input terminal of the first comparator is connected to the inverting input terminal of the third comparator, and the non-inverting input terminal of the third comparator is grounded through the third resistor; the output terminal of the first comparator is connected to the non-inverting input terminal of the second comparator and the inverting input terminal of the third comparator, respectively, and the inverting input terminal of the second comparator is connected to the adjustable terminal of the second resistor; the output terminal of the second comparator is connected to the input terminal of the first NOT gate, the output terminal of the first NOT gate is connected to the first input terminal of the fourth resistor and the OR gate, respectively, the output terminal of the OR gate is connected to a limit switch, the other end of the limit switch is grounded, the second input terminal of the OR gate is connected to the output terminal of the third NOT gate, the other end of the fourth resistor is connected to the positive terminal of the first diode, and the negative terminal of the first diode is grounded.

[0030] The first chip's A1 port is connected to the fifth resistor and the power input terminal, its A2 port is connected to the fifth resistor and the sixth resistor, its A3 and A4 ports are both connected to the sixth resistor and a capacitor (the other end of which is grounded), and its A5 port is connected to the second chip's B2 interface and the first chip's A5 port. The second chip's B4 port is connected to the first input terminal of the third NOT gate, and the third NOT gate's second input terminal is connected to the output terminal of the second NOT gate and the seventh resistor. The other end of the seventh resistor is connected to the anode of the second diode, the cathode of the second diode is grounded, and the second NOT gate's input terminal is connected to the output terminal of the third comparator. Both the first and second resistors are sliding resistors, and both the first and second diodes are light-emitting diodes (LEDs).

[0031] The level detection circuit, through its comparator and other electronic components, compares the input signal with a preset reference voltage. In other words, by comparing the input signal with the preset reference voltage, it determines whether there is an abnormality in the elevator's power supply, thereby managing the elevator power supply and ensuring the stable operation of the power supply used for elevator maintenance.

[0032] The elevator maintenance abnormal start monitoring device of this utility model also includes an early warning module. The early warning module is connected to the control module. The early warning module transmits the voltage data detected by the voltage detection module to the control module. The control module compares the voltage data at the corresponding location with a preset voltage value. If the voltage exceeds the preset value, it determines that the voltage at the specified location is abnormal. Alternatively, the early warning module transmits the current data detected by the current detection module to the control module. The control module compares the current data at the corresponding location with a preset current value. If the current exceeds the preset current value, it determines that the current at the specified location is abnormal. When a current or voltage abnormality occurs, the control module sends an early warning control command to the early warning module. The early warning module then issues a corresponding warning based on the control command, such as through voice announcement or indicator light display, to inform elevator maintenance personnel or management personnel so that appropriate action can be taken promptly.

[0033] In summary, an abnormal start monitoring device for elevator maintenance includes a current detection module, a voltage detection module, a level detection module, and a control module. The current detection module, voltage detection module, and level detection module are all connected to the control module. These modules are each positioned at a designated location within the elevator start circuit, meaning they are electrically connected to the elevator start circuit through these designated locations. Even when elevator maintenance personnel are repairing the elevator and the power is cut off, abnormal power supply issues can still occur, potentially leading to abnormal elevator startup. The current and voltage detection modules monitor the current and voltage, ensuring that no abnormal voltage or current occurs at the designated locations in the elevator start circuit, preventing abnormal elevator startup. The level detection module also monitors the stable operation of the elevator maintenance power supply, ensuring the safety of elevator maintenance personnel.

[0034] The embodiments described above merely illustrate specific implementation methods of this application, and while the descriptions are detailed, they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the technical solution of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. An abnormal start monitoring device for elevator maintenance, characterized in that, It includes a current detection module, a voltage detection module, a level detection module, and a control module, with the current detection module, voltage detection module, and level detection module all connected to the control module; The current detection module, voltage detection module, and level detection module are each located at a designated position in the elevator starting circuit, meaning that the current detection module, voltage detection module, and level detection module are electrically connected to the elevator starting circuit through designated positions in the elevator starting circuit.

2. The abnormal start monitoring device for elevator maintenance according to claim 1, characterized in that, The current detection module is model number 3UF7933-0BA00-0.

3. The abnormal start monitoring device for elevator maintenance according to claim 1, characterized in that, The voltage detection module is model DAQM-4103.

4. The abnormal start monitoring device for elevator maintenance according to claim 1, characterized in that, The level detection module includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, a first comparator, a second comparator, a third comparator, a first diode, a second diode, a first NOT gate, a second NOT gate, a third NOT gate, an OR gate, a first chip, a second chip, and a limit switch; The input terminal of the first resistor is connected to the voltage input terminal, the output terminal of the first resistor is grounded, the adjustable terminal of the first resistor is connected to the non-inverting input terminal of the first comparator, the inverting input terminal of the first comparator is connected to the inverting input terminal of the third comparator, and the non-inverting input terminal of the third comparator is grounded through the third resistor. The output terminal of the first comparator is connected to the non-inverting input terminal of the second comparator and the inverting input terminal of the third comparator, respectively. The inverting input terminal of the second comparator is connected to the adjustable terminal of the second resistor. The output of the second comparator is connected to the input of the first NOT gate. The output of the first NOT gate is connected to the fourth resistor and the first input of the OR gate, respectively. The output of the OR gate is connected to a limit switch, and the other end of the limit switch is grounded. The second input of the OR gate is connected to the output of the third NOT gate. The other end of the fourth resistor is connected to the positive terminal of the first diode, and the negative terminal of the first diode is grounded. The A1 port of the first chip is connected to the fifth resistor and the power input terminal respectively, the A2 port is connected to the fifth resistor and the sixth resistor respectively, the A3 and A4 ports are both connected to the sixth resistor and the capacitor, the other end of the capacitor is grounded, and the A5 port is connected to the B2 interface of the second chip and the A5 port of the first chip. The B4 port of the second chip is connected to the first input terminal of the third NOT gate. The second input terminal of the third NOT gate is connected to the output terminal of the second NOT gate and the seventh resistor. The other end of the seventh resistor is connected to the positive terminal of the second diode. The negative terminal of the second diode is grounded. The input terminal of the second NOT gate is connected to the output terminal of the third comparator.

5. The abnormal start monitoring device for elevator maintenance according to claim 4, characterized in that, Both the first resistor and the second resistor are sliding resistors, and both the first diode and the second diode are light-emitting diodes.

6. The abnormal start monitoring device for elevator maintenance according to claim 1, characterized in that, It also includes an early warning module, which is connected to the control module.

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