PLC (Programmable Logic Controller) system receiving equipment with high-strength signal receiving capability

Abstract

The utility model relates to the technical field of signal receiving equipment, and discloses PLC (Programmable Logic Controller) system receiving equipment with high-strength signal receiving capability, which comprises a PLC controller body and an anti-interference shell arranged on one side of the PLC controller body, and one side of the inner wall of the anti-interference shell is connected with a circuit board. One side of the circuit board is connected with the signal processing unit, and one side of the circuit board is connected with the encoder chip, the temperature sensor and the signal regulator. According to the utility model, the signal processing unit can effectively limit the amplitude of a high-strength signal so as to reduce the signal strength, the signal filter ensures the accuracy of the signal, and the TVS diode and the overvoltage protection module play a role in real-time protection during use, so that the problem that the equipment is damaged due to the hardness of the high-strength signal is avoided, and the service life of the equipment is prolonged. Meanwhile, the influence of the surrounding environment on signal reception can be effectively reduced and checked, and the heat dissipation effect on the installed PLC can be improved while self heat dissipation is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to signal receiving equipment technical field, specifically is a kind of PLC system receiving equipment with high signal receiving ability. BACKGROUND

[0002] PLC system receiving equipment usually refers to various input devices connected with PLC, which is responsible for receiving signals from various sensors, and converting these signals into digital signals that PLC can process and identify, these devices are used to pass signals to PLC, so that PLC can control or monitor industrial processes according to preset program.

[0003] When PLC receives high signal, if it exceeds the bearing range of PLC input module, it may cause the components of input circuit to be damaged, such as diode, transistor or integrated circuit, high signal may generate additional noise in the system, interfere with the reception and processing of other signals, and long-time reception of high signal may cause input module to overheat, affect its performance and life.

[0004] The above information disclosed in the background is only used to increase the understanding of the background of the application, therefore, it may include prior art known by those skilled in the art. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of PLC system receiving equipment with high signal receiving ability to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme: including PLC controller body and the interference-proof shell of interference-proof shell inner wall one side connection arrangement circuit board, signal processing unit is connected on one side of the circuit board, encoder chip, temperature sensor and signal regulator are connected on one side of the circuit board, radio frequency interference detector chip is connected on one side of the circuit board, heat-dissipating fan is connected on both sides of the interference-proof shell, heat-absorbing sheet is connected on the inner side of the interference-proof shell, loudspeaker is connected on one side of the interference-proof shell.

[0007] The signal processing unit includes an amplitude limiter, a signal filter, a TVS diode, a microprocessor and an overvoltage protection module.

[0008] Preferably, one end of the circuit board is connected with a wire, and the other end of the wire is connected with the PLC controller body.

[0009] Preferably, the interference-proof shell is provided with a heat dissipation hole on the front surface, and a concave end on the back surface.

[0010] Preferably, the loudspeaker is electrically connected with the radio frequency interference detector chip.

[0011] Preferably, the heat absorbing sheets are attached to the two sides of the PLC controller body at one end close to each other, and the anti-interference shell is provided with through holes corresponding to the heat absorbing sheets on the inner side.

[0012] Preferably, the amplitude limiter is connected with a signal input line on one side, and the other end of the signal input line is connected with an input device.

[0013] In summary, the present application has the following beneficial technical effects:

[0014] The signal processing unit can effectively limit the amplitude of high-intensity signals, thereby reducing the signal intensity, and the signal filter ensures the accuracy of the signal. The TVS diode and the overvoltage protection module play a real-time protection effect while being used, avoiding the problem of damage to the equipment due to high-intensity signals. At the same time, the influence of the surrounding environment on signal reception can be effectively reduced and checked, and the heat dissipation effect of the installed PLC controller can be improved at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the PLC system receiving device with high signal receiving capacity according to the present application;

[0016] Figure 2 It is a rear view structure schematic view of the PLC system receiving device with high signal receiving capacity according to the present application;

[0017] Figure 3 It is an internal structure schematic view of the PLC system receiving device with high signal receiving capacity according to the present application.

[0018] In the figure: 1, PLC controller body; 2, anti-interference shell; 3, circuit board; 4, amplitude limiter; 5, signal filter; 6, TVS diode; 7, microprocessor; 8, overvoltage protection module; 9, encoder chip; 10, temperature sensor; 11, signal regulator; 12, radio frequency interference detector chip; 13, wire; 14, heat dissipation fan; 15, loudspeaker; 16, heat absorbing sheet; 111, heat dissipation hole; 21, concave end. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] Please see Figures 1-3 This utility model provides a technical solution: including a PLC controller body 1 and an anti-interference housing 2 installed on one side of the PLC controller body 1. A circuit board 3 is connected to one side of the inner wall of the anti-interference housing 2. A signal processing unit is connected to one side of the circuit board 3. An encoder chip 9, a temperature sensor 10 and a signal conditioner 11 are connected to one side of the circuit board 3. A radio frequency interference detector chip 12 is connected to one side of the circuit board 3. Cooling fans 14 are connected to both sides of the anti-interference housing 2. Heat absorption sheets 16 are connected to the inner side of the anti-interference housing 2. A speaker 15 is connected to one side of the anti-interference housing 2.

[0021] Reference Figure 2 As shown, the signal processing unit includes a limiter 4, a signal filter 5, a TVS diode 6, a microprocessor 7, and an overvoltage protection module 8. A signal input line is connected to one side of the limiter 4, and an input device is connected to the other end of the signal input line. High-intensity signals are first reduced in strength by the limiter 4. The TVS diode 6 provides protection the moment the signal enters the limiter 4, and the overvoltage protection module 8 also provides protection. The overvoltage protection module 8 is a commonly used protection module in electronic equipment. It helps the circuit system effectively monitor and protect against voltage fluctuations. This module can quickly detect abnormal voltage conditions in the circuit and take corresponding measures when abnormal voltage is detected, such as powering off or disconnecting the circuit, to avoid damage to the equipment from excessive voltage. Since this is a conventional technology, it is not described in detail in the manual. The signal is then processed by the signal filter 5 to ensure signal accuracy.

[0022] Reference Figure 3 As shown, one end of the circuit board 3 is connected to the wire 13, and the other end of the wire 13 is connected to the PLC controller body 1. The high-intensity signal is first processed by the signal processing unit in the anti-interference housing 22, and then the signal is adjusted by the signal conditioner to adapt to the intensity of the PLC controller body 1 to avoid the signal being too strong or too weak. Then it is transmitted to the PLC controller body 1 through the wire 13.

[0023] Reference Figure 1 and Figure 2 As shown, the anti-interference housing 2 has a heat dissipation hole 111 on the front and a concave end 21 on the back. The concave end 21 can avoid affecting the use of the mounting surface on the back of the PLC controller body 1. The heat dissipation hole 111 is located close to the signal processing unit and is the first point where high-intensity signals enter, so heat dissipation is achieved through the heat dissipation hole 111.

[0024] Reference Figure 1 and Figure 3As shown, the speaker 15 is electrically connected to the radio frequency interference detector chip 12. In this application, the anti-interference housing 2 can be made of any shieldable material in the prior art. The radio frequency interference detector chip 12 is located inside the anti-interference housing 2. If the signal or radio frequency emitted by the surrounding environment or equipment is large, the radio frequency interference detector chip 12 can detect the radio frequency intensity. If the intensity is too high, it will emit a sound through the speaker 15 to provide a warning.

[0025] Reference Figure 3 As shown, the ends of the heat-absorbing sheets 16 that are close to each other are attached to both sides of the PLC controller body 1. The inner side of the anti-interference housing 2 is provided with through holes corresponding to the heat-absorbing sheets 16. The heat-absorbing sheets 16 can effectively absorb the heat generated by the PLC controller body 1 and improve the heat dissipation effect of the PLC controller body 1. After the cooling fan 14 is started, it can dissipate heat for the equipment inside the anti-interference housing 2 and further accelerate the heat dissipation of the PLC controller body 1 through the through holes.

[0026] The implementation principle of this application is as follows: When in use, the utility model is connected to the signal input device through the limiter 4. When a high-intensity signal is input, the TVS diode 6 can provide instantaneous protection, while the overvoltage protection module 8 is responsible for continuous protection. After the high-intensity signal is processed by the limiter 4, its intensity is reduced. Then, the signal is adjusted to a level suitable for the PLC controller body 1 by the signal conditioner 11 and input to the PLC controller body 1 through the wire 13. The radio frequency interference detector chip 12 detects external signal sources in its environment, which can further provide protection. The temperature sensor 10 detects its internal stability and can start the cooling fan 14 for heat dissipation through the microprocessor 7.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PLC system receiving device with high signal reception capability, comprising a PLC controller body (1) and an anti-interference housing (2) installed on one side of the PLC controller body (1), characterized in that: A circuit board (3) is connected to one side of the inner wall of the anti-interference housing (2). A signal processing unit is connected to one side of the circuit board (3). An encoder chip (9), a temperature sensor (10), and a signal conditioner (11) are connected to one side of the circuit board (3). A radio frequency interference detector chip (12) is connected to one side of the circuit board (3). A heat dissipation fan (14) is connected to both sides of the anti-interference housing (2). A heat absorption sheet (16) is connected to the inner side of the anti-interference housing (2). A speaker (15) is connected to one side of the anti-interference housing (2). The signal processing unit includes a limiter (4), a signal filter (5), a TVS diode (6), a microprocessor (7), and an overvoltage protection module (8).

2. The PLC system receiving device with high-strength signal receiving capability according to claim 1, characterized in that: One end of the circuit board (3) is connected to the wire (13), and the other end of the wire (13) is connected to the PLC controller body (1).

3. The PLC system receiving device with high-strength signal receiving capability according to claim 1, characterized in that: The anti-interference housing (2) has a heat dissipation hole (111) on the front and a concave end (21) on the back.

4. The PLC system receiving device with high-strength signal receiving capability according to claim 1, characterized in that: The speaker (15) is electrically connected to the radio frequency interference detector chip (12).

5. A PLC system receiving device with high-strength signal receiving capability according to claim 1, characterized in that: The heat-absorbing plates (16) are close to each other at one end and are attached to both sides of the PLC controller body (1). The anti-interference housing (2) has through holes on the inner side corresponding to the heat-absorbing plates (16).

6. A PLC system receiving device with high-strength signal receiving capability according to claim 1, characterized in that: The limiter (4) is connected to a signal input line on one side, and an input device is connected to the other end of the signal input line.

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