Temperature control system of communication cabinet

Abstract

The utility model relates to the technical field of communication equipment, in particular to a temperature control system of a communication cabinet, which comprises a cabinet body, communication equipment in the cabinet body, a power supply system and a temperature control system, the temperature control system comprises a temperature sensor, a driving circuit, terminal equipment, a main control chip, a timing circuit and a first exclusive-OR gate. The driving circuit comprises an AND gate, a photoelectric sensor and a working circuit; the timing circuit comprises an oscillator, a counter and a second exclusive-OR gate. The temperature control system provided by the utility model can automatically monitor the circuit of the system in real time in the operation process, and can accurately position a fault point when detecting that a fault occurs in the circuit; in the temperature control system, signals are transmitted in an optocoupler mode, and if a fault occurs, other circuits can be protected from being affected. According to the utility model, the technical problem that the temperature control system in the existing communication cabinet cannot automatically detect the operation state is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of communication equipment, and in particular to a temperature control system of a communication cabinet. Background Art

[0002] The communication cabinet integrates various necessary communication equipment and accessories, which are mainly used to prevent the communication equipment from being affected by the outside world, causing equipment failure or damage. Today's communication cabinets mainly monitor the internal environment of the cabinet in real time, but do not monitor their own status. If the communication cabinet fails, especially the temperature control system, the internal temperature of the communication cabinet cannot be adjusted in time, and the communication equipment in the cabinet will be affected. In serious cases, it may cause communication interruption and damage to the communication equipment.

[0003] The basic structure of the temperature control system of the existing communication cabinet includes a temperature sensor, a controller, and a fan, which are connected in sequence. If a single point of connection fails, subsequent devices may fail to perform operations or tasks as expected; if the fault point is not resolved in time, it may also affect other devices in the circuit and cause the entire circuit system of the communication cabinet to collapse. Therefore, it is of great significance to solve the problem that the temperature control system in the existing communication cabinet cannot detect the operating status by itself. Utility Model Content

[0004] The purpose of the present application is to provide a temperature control system for a communication cabinet, which solves the technical problem that the temperature control system in the existing communication cabinet cannot detect the operating status by itself.

[0005] In order to solve the above technical problems, the solution adopted by this application is as follows:

[0006] The utility model provides a temperature control system for a communication cabinet, comprising a cabinet, a communication device, a power system and a temperature control system in the cabinet, wherein the power system is connected to the communication device and the temperature control system respectively; the temperature control system comprises a temperature sensor and a terminal device, wherein the temperature sensor is connected to the terminal device; the temperature control system is characterized in that: the temperature control system further comprises a main control chip, a timing circuit, a driving circuit and a first XOR gate;

[0007] The driving circuit includes an AND gate, a photoelectric sensor, and a working circuit. The input end of the AND gate is connected to a plurality of temperature sensors. The temperature sensor transmits a signal to the AND gate. After the AND gate receives the signal and completes the judgment, it sends the signal to the photoelectric sensor. After the photoelectric sensor receives the signal and completes the processing, it sends the signal to the working circuit connected to it. The working circuit is connected to the terminal device. After the working circuit receives the signal, it drives the terminal device to work.

[0008] When the driving circuit drives the terminal device to work, the driving circuit sends a signal to a first XOR gate connected to the driving circuit for signal judgment. After the judgment is completed, the result signal is sent to the main control chip connected to the first XOR gate;

[0009] The timing circuit includes an oscillator, a counter, and a second XOR gate, wherein the oscillator is connected to the counter; the input end of the second XOR gate is connected to a plurality of temperature sensors, and after the second XOR gate receives a signal transmitted by the temperature sensor and completes the judgment, the second XOR gate sends a signal to the counter connected to its output end; after the counting is completed, the counter sends a control signal to the main control chip connected to the counter;

[0010] In some embodiments, the temperature sensor includes a thermistor, a filter circuit, and a comparator. The thermistor is connected to the filter circuit. After the thermistor converts the temperature signal into an electrical signal, the signal is transmitted to the filter circuit. After the filtering circuit completes the filtering, the signal is transmitted to the comparator connected to it for comparison. After the comparison is completed, the signal is output.

[0011] In some embodiments, an amplifier circuit is also included, and the amplifier circuit is connected to the driving circuit. The driving circuit sends a signal to the amplifier circuit. The amplifier circuit receives and amplifies the signal and then transmits the signal to the first XOR gate.

[0012] In some embodiments, the amplification circuit includes an operational amplifier and a filtering circuit. The operational amplifier is connected to the driving circuit. The driving circuit sends a signal to the operational amplifier. After the operational amplifier receives and amplifies the signal, it transmits the signal to the filtering circuit connected to the operational amplifier. After the filtering circuit completes filtering, it sends the signal to the first XOR gate connected to it.

[0013] In some embodiments, the filter circuit is an RC filter circuit.

[0014] In some embodiments, the terminal device includes a motor.

[0015] In some embodiments, a communication module is also included, and the communication module is connected to the main control chip.

[0016] In some embodiments, the communication module model is SIM800C.

[0017] In some embodiments, the main control chip model is STM32F103C8T6.

[0018] The technical solution of the present application has at least the following advantages and beneficial effects:

[0019] The temperature control system of this utility model can monitor the circuit of the system in real time during operation. When a fault is detected in the circuit, it can accurately locate the fault point and provide accurate location information to the staff, which helps the staff to quickly identify the problem and perform repairs. The temperature control system uses optical coupling to transmit signals. If a fault occurs, other circuits can be protected from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a circuit signal flow chart of the utility model;

[0021] Figure 2 This is a schematic diagram of the temperature sensor circuit of the utility model;

[0022] Figure 3 This is a schematic diagram of the amplifier circuit of the utility model;

[0023] Figure 4 This is a schematic diagram of a first XOR gate circuit of the utility model;

[0024] Figure 5 It is a schematic diagram of the timing circuit of the utility model;

[0025] Figure 6 This is a schematic diagram of the driving circuit of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. If the terms "center", "upper", "lower", "inner", "outer", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the figure, or the orientation or position relationship in which the product of the application is usually placed when in use, it is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 of the present application. It should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they 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, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Example 1

[0029] Please refer to Figure 1-Figure 6 The utility model provides a temperature control system for a communication cabinet, which is the same as the prior art, and includes a cabinet, a communication device in the cabinet, a power supply system, and a temperature control system. The power supply system is used to supply power to the communication device and the temperature control system, and is connected to the communication device and the temperature control system respectively; the communication device is an external device; the temperature control system includes a temperature sensor, a drive circuit, and a terminal device. The temperature sensor is connected to the drive circuit, and the temperature sensor transmits a signal to the drive circuit. After the drive circuit receives the signal, it drives the terminal device connected to the drive circuit to work;

[0030] Different from the prior art, the temperature control system further includes a main control chip, a timing circuit, an amplifier circuit, a drive circuit, and a first XOR gate; the drive circuit is connected to the temperature sensor, the temperature sensor transmits a signal to the drive circuit, and after the drive circuit processes the signal, it sends the signal to the amplifier circuit connected thereto; after the amplifier circuit amplifies the signal, it sends the signal to the first XOR gate connected thereto, and after the first XOR gate processes the signal, it sends the signal to the main control chip connected thereto;

[0031] The timing circuit is connected to the temperature sensor. When the temperature sensor sends a signal to the driving circuit, it also sends a signal to the timing circuit. The timing circuit judges the signal and starts timing. After the timing is completed, the timing circuit sends a signal to the main control chip connected to it.

[0032] The timing circuit is used for timing. If the signal output by the temperature sensor continues to be inconsistent within the specified time, the timing circuit sends a signal to the main control chip, and the main control chip sends a message to inform the staff that a certain temperature sensor has failed. An XOR gate is set in the timing circuit, and its function is to determine whether the temperatures measured by several temperature sensors are consistent, thereby determining whether the temperature sensor has failed.

[0033] In particular, the utility model redesigns the driving circuit of the temperature control system and adds a photoelectric sensor to the driving circuit to separate the circuit where the temperature sensor is located from the circuit where the motor is located. If a fault occurs in one of the two circuits, the other circuit will not be affected, thereby reducing losses.

[0034] It should be noted that the main control chip model is STM32F103C8T6.

[0035] The utility model also includes a communication module, which is connected to the main control chip, and the model of the communication module is SIM800C.

[0036] like Figure 2 As shown, the temperature sensor includes a thermistor, a filter circuit, and a comparator. The thermistor is connected to the filter circuit. After the thermistor converts the temperature signal into an electrical signal, the signal is transmitted to the filter circuit. After the filter circuit completes filtering, the signal is transmitted to the comparator connected thereto for comparison. After the comparison is completed, a signal is output; the filter circuit is an RC filter circuit;

[0037] Further, the temperature sensor includes a comparator U7, a thermistor U1, a common capacitor C3, and resistors R13, R14, R15, and R16; the RC filter circuit includes a common capacitor C3 and a resistor R14;

[0038] Furthermore, one end of the resistor R13, one end of the resistor R15, and pin 4 of the comparator U7 are connected and connected to a power supply, the other end of the resistor R13, one end of the resistor R14, and one end of the thermistor U1 are connected, the other end of the resistor R14, pin 3 of the comparator U7, and one end of the ordinary capacitor C3 are connected; the other end of the resistor R15, one end of the resistor R16, and pin 2 of the comparator U7 are connected, the other end of the thermistor U1, the other end of the resistor R16, the other end of the ordinary capacitor C3, and pin 5 of the comparator U7 are connected and grounded; the output end of the comparator U7 is set to the C output end, and the C output end is used to connect the drive circuit and the timing circuit.

[0039] like Figure 3 As shown, the amplifier circuit is connected to the driving circuit, the driving circuit sends a signal to the amplifier circuit, the amplifier circuit receives and amplifies the signal, and then transmits the signal to the first XOR gate; an RC filter circuit is provided in the amplifier circuit;

[0040] Further, the amplification circuit includes an operational amplifier U8, a common capacitor C4, and resistors R17, R18, and R19; the RC filter circuit includes a common capacitor C4 and a resistor R19;

[0041] Furthermore, pin 4 of the operational amplifier U8 is connected to the power supply and pin 5 is grounded, and pin 3 of the operational amplifier U8 is set as the in input terminal, which is used to receive the signal of the driving circuit; pin 2 of the operational amplifier U8, one end of the resistor R17, and one end of the resistor R18 are connected, the other end of the resistor R17, one end of the resistor R19, and pin 1 of the operational amplifier U8 are connected, and the other end of the resistor R19 is connected to one end of the ordinary capacitor C4, and the connecting part is set with an output terminal, which is called the out output terminal, which is used to connect to the first XOR gate and transmit signals to the first XOR gate; the other end of the resistor R18 is connected to the other end of the ordinary capacitor C4 and is grounded.

[0042] like Figure 4 As shown, the first XOR gate includes an XOR gate U9; the A end of the XOR gate U9 is set as the IN_1 input end, and the B end is set as the IN_2 input end. The IN_1 input end and the IN_2 input end of the XOR gate U9 are used to receive the output signal of the amplifier circuit, and the IN_1 input end and the IN_2 input end are respectively connected to the out output ends of different amplifier circuits; the Y end of the XOR gate U9 is set as the OUT_1 output end, and the OUT_1 output end is connected to the PA3 pin of the main control chip.

[0043] like Figure 5 As shown, the timing circuit includes an oscillator, a counter, and a second XOR gate, wherein the oscillator is connected to the counter; the input end of the second XOR gate is connected to a plurality of temperature sensors, and after the second XOR gate receives the signal transmitted by the temperature sensor and completes the judgment, the second XOR gate sends a signal to the counter connected to its output end; after the counting is completed, the counter sends a control signal to the main control chip connected to the counter;

[0044] Furthermore, the timing circuit includes an oscillator U4, a counter U5, an XOR gate U6, a polar capacitor C1, a common capacitor C2, and resistors R11 and R12; the XOR gate U6 is a second XOR gate;

[0045] Furthermore, pin 4 and pin 8 of the oscillator U4 and one end of the resistor R11 are connected and connected to a power supply, the other end of the resistor R11, one end of the resistor R12, and pin 7 of the oscillator U4 are connected, the other end of the resistor R12, the positive electrode of the polarized capacitor C1, pin 2 and pin 6 of the oscillator U4 are connected, the negative electrode of the polarized capacitor C1, pin 1 of the oscillator U4, and one end of the ordinary capacitor C2 are connected and grounded; pin 3 of the oscillator U4 is connected to pin 2 of the counter U5, and pin 16, pin 7, and pin 1 of the counter U5 are connected. 0 and connected to the power supply; Pin 8 of counter U5 is grounded, and Pin 1 is connected to the Y end of XOR gate U6; Terminal A of XOR gate U6 is set to IN_3 input terminal, and terminal B is set to IN_4 input terminal. IN_3 input terminal and IN_4 input terminal of XOR gate U6 are used to receive the output signal of the temperature sensor, and IN_3 input terminal and IN_4 input terminal are respectively connected to C output terminal of different temperature sensors; Pin 15 of counter U5 is set to OUT_2 output terminal, and OUT_2 output terminal is connected to Pin PA4 of the main control chip.

[0046] It should be noted that the model of oscillator U4 is NE555DR, and the model of counter U5 is 74LS161.

[0047] like Figure 6 As shown, the driving circuit includes an AND gate, a photoelectric sensor, and a working circuit. The input end of the AND gate is connected to several temperature sensors. The temperature sensor transmits a signal to the AND gate. After the AND gate receives the signal and completes the judgment, it sends the signal to the photoelectric sensor. After the photoelectric sensor receives the signal and completes the processing, it sends the signal to the working circuit connected to it. The working circuit is connected to the terminal device. After receiving the signal, the working circuit drives the terminal device to work;

[0048] Furthermore, the driving circuit includes an AND gate U1, a photoelectric sensor U2, a motor U3, a diode D3, indicator lights D1 and D2, transistors Q1, Q2 and Q3, and resistors R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10; the AND gate U1 is used to determine whether the signals transmitted by several temperature sensors are consistent. If the signals received at the input end of the AND gate U1 are consistent, the AND gate sends a signal to the photoelectric sensor U2; the photoelectric sensor U2 is used to separate the circuit where the temperature sensor is located from the circuit where the motor is located. If a fault occurs in one of the two circuits, the other circuit will not be affected, thereby reducing the loss; the indicator lights D1 and D2 are used to help maintenance personnel quickly locate the fault range; the motor U3 is used to drive the fan to rotate; the diode D3 is used to protect the circuit to prevent the transistor Q2 from being broken down when the motor U3 is powered off; the working circuit includes resistors R4, R5, R6, R7, R8, R9 and R10, transistors Q2 and Q3, the indicator light D2, the diode D3 and the motor U3.

[0049] Furthermore, pin 1 of the AND gate U1 is set as the D_1 input terminal, and pin 2 is set as the D_2 input terminal. The D_1 input terminal and the D_2 input terminal are used to receive signals transmitted by different temperature sensors, and the D_1 input terminal and the D_2 input terminal are respectively connected to the C output terminals of different temperature sensors; pin 3 of the AND gate U1 is connected to one end of the resistor R1, and the other end of the resistor R1 is connected to the base of the transistor Q1, the collector of the transistor, one end of the resistor R2, and the negative electrode of the indicator light D1 are connected, and the other end of the resistor R2 and the positive electrode of the indicator light D1 are connected and connected to the power supply; the emitter of the transistor Q1 is connected to pin 1 of the photoelectric sensor U2, and pin 2 of the photoelectric sensor U2 is connected to one end of the resistor R3, and this connection part is set with an output terminal and is called the A output terminal; the other end of the resistor R3 is grounded; pin 4 of the photoelectric sensor U2 is connected to one end of the resistor R4, and the resistor The other end of R4, one end of resistor R8, the positive electrode of indicator light D2, one end of resistor R10, the negative electrode of diode D3, and one end of motor U3 are connected; pin 3 of photoelectric sensor U2, one end of resistor R5, and one end of resistor R6 are connected, the other end of resistor R5 is connected to the base of transistor Q3, the collector of transistor Q3, the other end of resistor R8, the negative electrode of indicator light D2, and one end of resistor R9 are connected, and the other end of resistor R9 is connected to the base of transistor Q2; the collector of transistor Q2, the other end of resistor R10, the positive electrode of diode D3, and the other end of motor U3 are connected; the emitter of transistor Q3 is connected to one end of resistor R7, and the output end is set at this connection part, which is called B output end, and the B output end is connected to the amplifier circuit; the other end of resistor R6, the other end of resistor R7, and the emitter of transistor Q2 are connected and grounded.

[0050] Preferably, the C output terminal of a temperature sensor, the IN_3 input terminal of the XOR gate U6 in the timing circuit, and the IN_1 input terminal of the XOR gate U9 in the first XOR gate are connected; the C output terminal of another temperature sensor, the IN_4 input terminal of the XOR gate U6 in the timing circuit, and the IN_2 input terminal of the XOR gate U9 in the first XOR gate are connected; this connection method enables the device to monitor its operating status more accurately.

[0051] It should be noted that the circuit for self-detecting the operating status of the temperature control system is also applicable to other control systems of the communication cabinet, such as the humidity control system, and the humidity control system is used to monitor the humidity of the communication cabinet; it should be noted that the circuit for self-detecting the operating status of the temperature control system is used in the humidity control system, and the temperature sensor needs to be replaced with a humidity sensor.

[0052] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution of the present invention, and the scope of the present invention is defined by the attached claims.

Claims

1. A temperature control system for a communication cabinet, comprising a cabinet, communication equipment, a power system and a temperature control system in the cabinet, wherein the power system is connected to the communication equipment and the temperature control system respectively; the temperature control system comprises a temperature sensor and a terminal device, wherein the temperature sensor is connected to the terminal device; and the characteristics are as follows: The temperature control system also includes a main control chip, a timing circuit, a driving circuit, and a first XOR gate; The driving circuit includes an AND gate, a photoelectric sensor, and a working circuit. The input end of the AND gate is connected to a plurality of temperature sensors. The temperature sensor transmits a signal to the AND gate. After the AND gate receives the signal and completes the judgment, it sends the signal to the photoelectric sensor. After the photoelectric sensor receives the signal and completes the processing, it sends the signal to the working circuit connected to it. The working circuit is connected to the terminal device. After the working circuit receives the signal, it drives the terminal device to work. When the driving circuit drives the terminal device to work, the driving circuit sends a signal to a first XOR gate connected to the driving circuit for signal judgment. After the judgment is completed, the result signal is sent to the main control chip connected to the first XOR gate; The timing circuit includes an oscillator, a counter, and a second XOR gate, wherein the oscillator is connected to the counter; the input end of the second XOR gate is connected to a plurality of temperature sensors, and after the second XOR gate receives the signal transmitted by the temperature sensor and completes the judgment, the second XOR gate sends a signal to the counter connected to its output end; after the counting is completed, the counter sends a control signal to the main control chip connected to the counter.

2. The temperature control system for a communication cabinet according to claim 1, characterized in that: The temperature sensor includes a thermistor, a filter circuit, and a comparator. The thermistor is connected to the filter circuit. After the thermistor converts the temperature signal into an electrical signal, the signal is transmitted to the filter circuit. After the filtering circuit completes the filtering, the signal is transmitted to the comparator connected to it for comparison. After the comparison is completed, the signal is output.

3. The temperature control system for a communication cabinet according to claim 1, characterized in that: It also includes an amplifier circuit, which is connected to a drive circuit. The drive circuit sends a signal to the amplifier circuit. The amplifier circuit receives and amplifies the signal and then transmits the signal to the first XOR gate.

4. The temperature control system for a communication cabinet according to claim 3, characterized in that: The amplification circuit includes an operational amplifier and a filtering circuit. The operational amplifier is connected to the driving circuit. The driving circuit sends a signal to the operational amplifier. After the operational amplifier receives and amplifies the signal, it transmits the signal to the filtering circuit connected to the operational amplifier. After the filtering circuit completes the filtering, it sends the signal to the first XOR gate connected to it.

5. The temperature control system for a communication cabinet according to any one of claims 2 and 4, characterized in that: The filter circuit is an RC filter circuit.

6. The temperature control system for a communication cabinet according to claim 1, characterized in that: The terminal device includes a motor.

7. The temperature control system for a communication cabinet according to claim 1, characterized in that: It also includes a communication module, which is connected to the main control chip.

8. The temperature control system for a communication cabinet according to claim 7, characterized in that: The communication module model is SIM800C.

9. The temperature control system for a communication cabinet according to claim 1, characterized in that: The main control chip model is STM32F103C8T6.

Images