Novel photoelectric flat layer sensor circuit

Abstract

The utility model provides a novel photoelectric type leveling sensor circuit, and relates to the technical field of elevator leveling position switches, the novel photoelectric type leveling sensor circuit comprises an infrared emission circuit and a logic judgment action circuit, the logic judgment action circuit comprises a logic processing circuit, an infrared receiving circuit and an output relay circuit, and the infrared emission circuit comprises an infrared transmitting tube. The infrared receiving circuit comprises an infrared receiving tube, the logic processing circuit comprises a logic exclusive-OR gate, and the output relay circuit comprises a first solid-state relay and a second solid-state relay; according to the technical key points, an infrared emission circuit emits infrared light waves, after an infrared receiving circuit receives the infrared light waves, when signals of the obtained infrared light waves are transmitted to a logic processing circuit, the logic processing circuit judges and processes the signals and outputs control signals to an output relay circuit, and the output relay circuit carries out action indication. Accurate and rapid response capability of the leveling switch can be ensured by the transmission accuracy of infrared light waves.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator leveling position switches, in particular to a novel photoelectric leveling sensor circuit. Background Art

[0002] Elevator leveling means that when the elevator enters the door area, the elevator leveling device will give the elevator a signal, and the elevator will start braking according to the signal. Due to the inertia of the elevator braking, the elevator will not be able to stop accurately at the leveling position. At this time, the elevator control system needs to adjust the position of the elevator to make the elevator stop at the correct position. In order for the elevator control system to make a control instruction, a leveling signal must be sent to the control system. The sending of this signal is the role of the elevator re-leveling device.

[0003] The elevator leveling switch is the starting element for the control action in this process. It generally uses a photoelectric switch. Compared with magnetic switch products, photoelectric switches can be used in many fields such as home appliances, mechanical control, automobiles, industrial control and security, elevators, etc. However, photoelectric switches solve the problem of limited application range of magnetic switch products.

[0004] The existing car leveling switch often has unstable output signals from its output circuit transistor, which greatly affects the anti-interference ability of the leveling switch in controlling the elevator action and easily causes the leveling switch to malfunction. Utility Model Content

[0005] In order to overcome the problem that the output signal of the transistor in the output circuit of the existing car leveling switch is often unstable, which greatly affects the anti-interference ability of the leveling switch in controlling the elevator action and is prone to malfunction of the leveling switch, the embodiment of the present application provides a novel photoelectric leveling sensor circuit, which enables the infrared transmitting circuit to emit infrared light waves. After the infrared receiving circuit receives the infrared light waves, the signal of the acquired infrared light waves is transmitted to the logic processing circuit. The logic processing circuit judges and processes it, and outputs a control signal to the output relay circuit, which performs an action instruction. Due to the accuracy of the infrared light wave transmission, the reliability of the leveling switch and the accurate and fast response capability can be guaranteed.

[0006] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A novel photoelectric leveling sensor circuit comprises an infrared transmitting circuit and a logic judgment action circuit. The logic judgment action circuit comprises a logic processing circuit, an infrared receiving circuit and an output relay circuit. The infrared transmitting circuit transmits infrared light waves, which are received by the infrared receiving circuit and judged and processed by the logic processing circuit, and a control signal is output to the output relay circuit, which performs an action instruction.

[0008] In a possible implementation, the infrared transmitting circuit includes an infrared transmitting tube and a potentiometer, and the infrared transmitting circuit transmits infrared light waves with a wavelength of 940 nm through the infrared transmitting tube.

[0009] In a possible implementation, the infrared receiving circuit includes an infrared receiving tube, and the infrared receiving circuit receives infrared light waves through the infrared receiving tube.

[0010] In one possible implementation, the logic processing circuit includes a logic XOR gate, the OUT end of the infrared receiving circuit is connected to a pin of the logic XOR gate, the IN end of the output relay circuit is connected to the OUT pin of the logic XOR gate, and the logic XOR gate receives the high and low level judgment processing of the infrared signal and outputs a control signal.

[0011] In a possible implementation, the output relay circuit includes a first solid-state relay, a second solid-state relay, and a first light-emitting diode, wherein the first light-emitting diode is connected to a circuit between the first solid-state relay and the second solid-state relay.

[0012] In one possible implementation, the infrared transmitting circuit and the logic judgment action circuit are connected to the same power supply circuit, which includes a linear voltage regulator chip, a transient diode and a second light-emitting diode. A 24V power supply voltage is input to the power supply circuit and is processed by the linear voltage regulator chip to output a 5V power supply voltage.

[0013] In one possible implementation, the second light-emitting diode is a power path indicator light. By using the second light-emitting diode to indicate the power path, the staff can judge from the outside the power supply status of the power circuit to the logic judgment action circuit. The first light-emitting diode is an indicator light for displaying infrared sending and receiving signals. By using the first light-emitting diode to indicate the working status of the first solid-state relay and the second solid-state relay, the working status of the first solid-state relay and the second solid-state relay in the output relay circuit can be judged from the outside.

[0014] In summary, the present invention includes at least one of the following beneficial technical effects:

[0015] By making the infrared transmitting circuit emit infrared light waves, after the infrared receiving circuit receives the infrared light waves, the signal of the acquired infrared light waves is transmitted to the logic processing circuit. The logic processing circuit judges and processes it, and outputs a control signal to the output relay circuit, which then gives an action instruction. Due to the accuracy of infrared light wave transmission, the reliability of the leveling switch and its accurate and rapid response capability can be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1This is a power supply circuit diagram of the utility model;

[0017] Figure 2 This is the infrared emission circuit diagram of the utility model;

[0018] Figure 3 This is the logic judgment action circuit diagram of the utility model;

[0019] Figure 4 This is the infrared receiving circuit diagram of the utility model;

[0020] Figure 5 It is a logic processing circuit diagram of the utility model;

[0021] Figure 6 This is the output relay circuit diagram of the utility model.

[0022] Description of the drawings: U1, linear voltage regulator chip; U2, logic XOR gate; U3, first solid-state relay; U4, second solid-state relay; DS1, infrared transmitting tube; QR, infrared receiving tube; T1, transient diode; D4, first light-emitting diode; D5, second light-emitting diode; RPOT1, potentiometer. DETAILED DESCRIPTION

[0023] The technical solution in the embodiment of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0024] Embodiment 1:

[0025] This embodiment introduces a specific structure of a novel photoelectric leveling sensor circuit. Figure 1-Figure 6 As shown, it includes an infrared transmitting circuit and a logic judgment action circuit, the logic judgment action circuit includes a logic processing circuit, an infrared receiving circuit and an output relay circuit, the infrared transmitting circuit includes an infrared transmitting tube DS1 and a potentiometer RPOT1, and the infrared receiving circuit includes an infrared receiving tube QR;

[0026] Among them, during the operation of the elevator car, the infrared transmitting circuit transmits infrared light waves with a wavelength of 940nm through the infrared transmitting tube DS1, so that the infrared receiving circuit receives the infrared light waves through the infrared receiving tube QR. When the car is in a level state, the infrared light wave reception work can be completed, which is more accurate;

[0027] like Figure 5 and Figure 4 As shown, the logic processing circuit includes a logic XOR gate U2, the OUT end of the infrared receiving circuit is connected to a pin of the logic XOR gate U2, and the IN end of the output relay circuit is connected to the OUT pin of the logic XOR gate U2;

[0028] Among them, when the infrared receiving circuit receives infrared light waves through the infrared receiving tube QR, the elevator position information is obtained. When the infrared receiving circuit outputs a signal to the logic XOR gate U2, the logic XOR gate U2 can receive the high and low levels of the infrared signal. After the judgment process, the control signal is output to the output relay circuit to make the output relay circuit operate;

[0029] Secondly, in order to be able to judge the working status of the first solid-state relay U3 and the second solid-state relay U4 in the output relay circuit from the outside, such as Figure 6 As shown, the output relay circuit includes a first solid-state relay U3, a second solid-state relay U4 and a first light-emitting diode D4. By connecting the first light-emitting diode D4 to the circuit between the first solid-state relay U3 and the second solid-state relay U4, and setting the first light-emitting diode D4 as an indicator light for displaying infrared sending and receiving signals, after the logic processing circuit outputs a control signal to the output relay circuit, the output relay can be operated, and the first light-emitting diode D4 can indicate the working conditions of the first solid-state relay U3 and the second solid-state relay U4;

[0030] In some examples, the infrared emission circuit and the logic judgment action circuit are connected to the same power supply circuit, which includes a linear voltage regulator chip U1, a transient diode T1, and a second light-emitting diode D5;

[0031] Among them, the 24V power supply voltage is input to the power supply circuit, and is processed by the linear voltage regulator chip U1 to output a 5V power supply voltage, thereby providing working power for the logic processing circuit, infrared transmitting circuit and infrared receiving circuit, and the output relay circuit obtains working power by connecting to the pin of the logic XOR gate U2;

[0032] At the same time, by providing a second light-emitting diode D5 in the power circuit for indicating the power path status, the staff can judge the power supply status of the power circuit to the logic judgment action circuit from the outside.

[0033] By adopting the above technical solution:

[0034] The above design enables the infrared transmitting circuit to transmit infrared light waves with the help of the infrared transmitting tube DS1. After the infrared receiving circuit receives the infrared light waves through the infrared receiving tube QR, the elevator leveling status information can be obtained. When the infrared receiving circuit transmits the signal of the acquired infrared light wave to the logic processing circuit, the logic processing circuit judges and processes it, and outputs a control signal to the output relay circuit, which performs an action instruction. This can solve the problems of large loss, malfunction and unstable output of traditional leveling sensors, and has extremely high reliability and accurate and fast response capabilities.

[0035] Finally, it should be noted that: Obviously, the above embodiments are merely examples given to clearly illustrate the present utility model, rather than limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or modifications derived therefrom still fall within the protection scope of the present utility model.

Claims

1. A novel photoelectric leveling sensor circuit, characterized in that: include: Infrared transmitting circuit; Logic judgment action circuit; Among them, the logic judgment action circuit includes a logic processing circuit, an infrared receiving circuit and an output relay circuit. The infrared transmitting circuit transmits infrared light waves, which are received by the infrared receiving circuit and judged and processed by the logic processing circuit, and a control signal is output to the output relay circuit, which performs action instructions.

2. A novel photoelectric leveling sensor circuit as claimed in claim 1, characterized in that: The infrared transmitting circuit comprises an infrared transmitting tube (DS1) and a potentiometer (RPOT1), and the infrared transmitting circuit transmits infrared light waves with a wavelength of 940nm through the infrared transmitting tube (DS1).

3. A novel photoelectric leveling sensor circuit as claimed in claim 1, characterized in that: The infrared receiving circuit comprises an infrared receiving tube (QR), and the infrared receiving circuit receives infrared light waves through the infrared receiving tube (QR).

4. A novel photoelectric leveling sensor circuit as claimed in claim 1, characterized in that: The logic processing circuit comprises a logic XOR gate (U2), the OUT end of the infrared receiving circuit is connected to a pin of the logic XOR gate (U2), the IN end of the output relay circuit is connected to the OUT pin of the logic XOR gate (U2), and the logic XOR gate (U2) receives the high and low level judgment processing of the infrared signal and outputs a control signal.

5. A novel photoelectric leveling sensor circuit as claimed in claim 1, characterized in that: The output relay circuit comprises a first solid-state relay (U3), a second solid-state relay (U4) and a first light-emitting diode (D4), wherein the first light-emitting diode (D4) is connected to a circuit between the first solid-state relay (U3) and the second solid-state relay (U4).

6. A novel photoelectric leveling sensor circuit as claimed in claim 5, characterized in that: The infrared emission circuit and the logic judgment action circuit are connected to the same power supply circuit, and the power supply circuit includes a linear voltage regulator chip (U1), a transient diode (T1) and a second light-emitting diode (D5); The 24V power supply voltage is input to the power supply circuit and processed by the linear voltage regulator chip (U1) to output a 5V power supply voltage.

7. A novel photoelectric leveling sensor circuit as claimed in claim 6, characterized in that: The second light emitting diode (D5) is a power path indicator light, and the first light emitting diode (D4) is an indicator light for displaying infrared sending and receiving signals.

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