Cold channel control circuit for signal forwarding for cabinet

Abstract

The utility model discloses a cold channel control circuit for signal forwarding for a cabinet, and belongs to the field of cold channel products for data centers. The cold channel control circuit for signal forwarding for the cabinet comprises a switching power supply UR, a normally closed button SB, an intermediate relay group, an electromagnetic contactor KM, an alarm device and a direct current electromagnet YA, the intermediate relay group is composed of a plurality of intermediate relays connected in parallel; according to the utility model, the intermediate relay is additionally arranged in the circuit, so that effective signal transmission and equipment linkage are realized, and the intermediate relay is used as a medium for signal transmission, so that on the premise that the complexity of the circuit is not increased, good expansibility and compatibility are realized, more types of peripheral equipment can be easily accessed, and the cost is reduced. The increasing equipment access requirement of the data center is met, and a powerful guarantee is provided for efficient and safe operation of the data center.

Description

Technical Field

[0001] This utility model relates to a cold aisle control circuit for signal forwarding in server racks, belonging to the field of cold aisle products for data centers. Background Technology

[0002] In recent years, with the full arrival of the big data era, the amount of data carried by data centers has shown an explosive growth trend. This change has not only driven the rapid development of information technology, but also posed unprecedented challenges to the operation and management of data centers, especially their security issues, which have attracted great attention from the industry and academia. In order to cope with the ever-increasing demand for data processing and ensure the secure storage and transmission of data, data center server rooms are constantly expanding, and the types and quantities of their peripheral equipment have also increased dramatically, including environmental monitoring equipment, security monitoring equipment, emergency response systems, etc. These devices are crucial to ensuring the overall operation of the data center.

[0003] However, with the rapid expansion of data centers, the number of signal points reserved during the initial planning is far from meeting the current and future needs of peripheral device access. This contradiction directly leads to poor communication between devices, seriously affecting the operational efficiency and overall security of data centers. Therefore, developing control circuits with signal forwarding capabilities to achieve effective signal relay and distribution has become an urgent need to solve the current predicament.

[0004] Currently, cold aisle control circuits in data centers, as key components for maintaining a stable environment within the server room, commonly employ switching power supply technology to efficiently convert standard AC220V AC power into DC24V DC power, specifically for powering low-power devices such as skylight electromagnets in cold aisles. These control circuits were initially designed with basic device control functions in mind: receiving control signals from the host computer to open and close devices like skylight electromagnets. However, with the surge in the number of peripheral devices in data centers, the functional limitations of existing control circuits have become increasingly apparent, particularly the lack of the ability to retransmit external signals, which restricts information sharing and collaborative operations among peripheral devices in security management. Utility Model Content

[0005] To address the security and management needs of data centers, this invention provides a cold aisle control circuit for rack signal forwarding, which adds signal forwarding functionality to existing cold aisle control circuits to enable information sharing and collaborative operation of a large number of peripheral devices. The technical solution is as follows.

[0006] The cold aisle control circuit for signal forwarding in the cabinet of this utility model includes: a switching power supply UR, a normally closed button SB, an intermediate relay group, an electromagnetic contactor KM, an alarm device, and a DC electromagnet YA; the intermediate relay group consists of several intermediate relays connected in parallel.

[0007] The first terminal of the normally closed contact of the first intermediate relay KA1, the first terminal of the main contact of the electromagnetic contactor KM, and the first terminal of the external signal are connected to the positive terminal of the switching power supply UR; the second terminal of the intermediate relay coil, the second terminal of the alarm device, and the second terminal of the DC electromagnet YA are connected to the negative terminal of the switching power supply UR; the second terminal of the external signal is connected to the first terminal of the intermediate relay coil; the second terminal of the normally closed contact of the first intermediate relay KA1 is connected to the first terminal of the alarm device; and the second terminal of the main contact of the electromagnetic contactor KM is connected to the first terminal of the DC electromagnet YA.

[0008] The first terminal of the normally open contact of the first intermediate relay KA1, the L point of the switching power supply UR, and the L line of the AC power supply are connected; the second terminal of the coil of the electromagnetic contactor KM, the N point of the switching power supply UR, and the N line of the AC power supply are connected; the second terminal of the normally open contact of the first intermediate relay KA1 is connected to the first terminal of the coil of the electromagnetic contactor KM through the normally closed button SB.

[0009] In one embodiment, a miniature circuit breaker QF1 is also included. The first terminal of the normally open contact of the first intermediate relay KA1 and the L point of the switching power supply UR are connected to the L line of the AC power supply through the miniature circuit breaker QF1. The second terminal of the coil of the electromagnetic contactor KM and the N point of the switching power supply UR are connected to the N line of the AC power supply through the miniature circuit breaker QF1.

[0010] In one embodiment, the first terminal of the normally closed contact of the first intermediate relay KA1 in the intermediate relay group, the first terminal of the main contact of the electromagnetic contactor KM, and the first terminal of the external signal are connected to the positive terminal of the switching power supply UR via a cable with a fuse.

[0011] In one embodiment, the switching power supply UR is a 24V switching power supply.

[0012] In one embodiment, the alarm device includes an audible and visual buzzer.

[0013] In one implementation, the normally closed and normally open contacts of the intermediate relay group are switched to output signals.

[0014] In one embodiment, the DC electromagnet YA controls the opening and closing of the skylight.

[0015] In one embodiment, a terminal block is also included.

[0016] Advantages of this utility model:

[0017] This invention achieves effective signal transmission and equipment linkage by adding an intermediate relay to the circuit. Specifically, the control signal sent from the computer room first drives the intermediate relay to operate. Subsequently, the contacts of the intermediate relay close or open, further driving the start or stop of other peripheral devices.

[0018] This invention utilizes an intermediate relay as a signal transmission medium, which, without increasing the complexity of the circuit, also has good scalability and compatibility, and can easily connect more types and more numbers of peripheral devices, meeting the growing device access needs of data centers and providing a strong guarantee for the efficient and secure operation of data centers. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the cold aisle control circuit with fire protection function for the cabinet of this utility model. Detailed Implementation

[0020] like Figure 1 As shown, this utility model discloses a cold aisle control circuit for signal forwarding in a cabinet. The circuit includes: a miniature circuit breaker QF1, a 24V switching power supply UR, a normally closed push button SB, an intermediate relay KA1, an intermediate relay KA2, a normally closed electromagnetic contactor KM, an audible and visual buzzer HA, a DC electromagnet YA, and a terminal block XT1-18.

[0021] In this embodiment, the control method is to connect AC220V to the 24V switching power supply UR through the miniature circuit breaker QF1, convert the mains power to DC24V voltage, and power the subsequent circuit.

[0022] like Figure 1 As shown, point 2 of the intermediate relay KA1 and point 1 of the normally closed electromagnetic contactor KM are connected to the positive terminal of UR via a cable with a fuse.

[0023] The 8 points of intermediate relay KA1, the 8 points of intermediate relay KA2, the X2 points of the sound and light buzzer HA, and the 2 points of DC electromagnet YA are connected to the negative terminal of the 24V switching power supply UR.

[0024] Point 6 of the intermediate relay KA1 is connected to point X1 of the audible and visual buzzer HA.

[0025] Point 2 of the normally closed electromagnetic contactor KM is connected to point 1 of the DC electromagnet YA.

[0026] Point 3 of intermediate relay KA1, point L of 24V switching power supply UR, and line L of output terminal of miniature circuit breaker QF1 are connected.

[0027] The A2 point of the normally closed electromagnetic contactor KM, the N point of the 24V switching power supply UR, and the N line of the output terminal of the miniature circuit breaker QF1 are connected.

[0028] Point 5 of the intermediate relay KA1 is connected to point 11 of the normally closed push button SB.

[0029] Point 12 of the normally closed push button SB is connected to point A1 of the normally closed electromagnetic contactor KM.

[0030] The working principle of this utility model:

[0031] The normally closed push button SB and intermediate relay KA1 are used to de-energize and energize the coil of the normally closed electromagnetic contactor KM. The specific control process is as follows:

[0032] (1) Initial state (no external signal input): The coils of intermediate relays KA1 and KA2 are de-energized, the normally closed contacts 6 and 2 of KA1 are closed, and the audible and visual buzzer HA is energized and works. The normally open contacts 3 and 5 of KA1 are open, the coil of the normally closed electromagnetic contactor KM is de-energized, the main contacts 1 and 2 of KM are open, and the DC electromagnet YA does not work.

[0033] (2) After an external signal (normally closed contact) is input, the coils of intermediate relays KA1 and KA2 are energized, normally closed contacts 6 and 2 of K1 open, and the audible and visual buzzer HA is de-energized and stops working. Normally open contacts 3 and 5 of KA1 close, the coil of normally closed electromagnetic contactor KM is energized, and the main contacts 1 and 2 of KM close, causing the DC electromagnet YA to work. Normally closed contacts 1 and 5 and normally open contacts 3 and 5 of KA2 switch to output signals to the outside.

[0034] (3) When the external signal input state is maintained, keep the normally closed button SB closed: the normally closed electromagnetic contactor KM coil is energized, KM main contacts 1 and 2 are opened, and the DC electromagnet YA is de-energized and does not work.

[0035] (4) When the external signal input state is reached, the normally closed button SB is disconnected: the coil of the normally closed electromagnetic contactor KM is de-energized, the main contacts 1 and 2 of KM are closed, and the DC electromagnet works.

[0036] In this embodiment, a DC switching power supply is used to convert AC220V to DC24V. The computer room controller provides signals to control the opening and closing functions of two intermediate relays. One of the intermediate relays drives the electromagnetic contactor to open and close to realize the circuit connection and disconnection, and at the same time controls the alarm of the sound and light buzzer. The other outputs normally open and normally closed signals for use by other peripheral devices.

[0037] This invention utilizes an intermediate relay as a signal transmission medium, which, without increasing the complexity of the circuit, also has good scalability and compatibility, and can easily connect to more types of peripheral devices, meeting the growing device access needs of data centers and providing a strong guarantee for the efficient and secure operation of data centers.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the claims.

Claims

1. A cold aisle control circuit for signal forwarding in a server rack, characterized in that, The circuit includes: a switching power supply UR, a normally closed push button SB, an intermediate relay group, an electromagnetic contactor KM, an alarm device, and a DC electromagnet YA; the intermediate relay group consists of several intermediate relays connected in parallel. The first terminal of the normally closed contact of the first intermediate relay KA1, the first terminal of the main contact of the electromagnetic contactor KM, and the first terminal of the external signal are connected to the positive terminal of the switching power supply UR; the second terminal of the intermediate relay coil, the second terminal of the alarm device, and the second terminal of the DC electromagnet YA are connected to the negative terminal of the switching power supply UR; the second terminal of the external signal is connected to the first terminal of the intermediate relay coil; the second terminal of the normally closed contact of the first intermediate relay KA1 is connected to the first terminal of the alarm device; and the second terminal of the main contact of the electromagnetic contactor KM is connected to the first terminal of the DC electromagnet YA. The first terminal of the normally open contact of the first intermediate relay KA1, the L point of the switching power supply UR, and the L line of the AC power supply are connected; the second terminal of the coil of the electromagnetic contactor KM, the N point of the switching power supply UR, and the N line of the AC power supply are connected; the second terminal of the normally open contact of the first intermediate relay KA1 is connected to the first terminal of the coil of the electromagnetic contactor KM through the normally closed button SB.

2. The cold aisle control circuit for signal forwarding in a server rack according to claim 1, characterized in that, It also includes a miniature circuit breaker QF1, the first terminal of the normally open contact of the first intermediate relay KA1 and the L point of the switching power supply UR are connected to the L line of the AC power supply through the miniature circuit breaker QF1, and the second terminal of the coil of the electromagnetic contactor KM and the N point of the switching power supply UR are connected to the N line of the AC power supply through the miniature circuit breaker QF1.

3. The cold aisle control circuit for signal forwarding in a server rack according to claim 1, characterized in that, The first terminal of the normally closed contact of the first intermediate relay KA1 in the intermediate relay group, the first terminal of the main contact of the electromagnetic contactor KM, and the first terminal of the external signal are connected to the positive terminal of the switching power supply UR through a cable with a fuse.

4. The cold aisle control circuit for signal forwarding in a server rack according to claim 1, characterized in that, The switching power supply UR is a 24V switching power supply.

5. The cold aisle control circuit for signal forwarding in a server rack according to claim 1, characterized in that, The alarm device includes: an audible and visual buzzer.

6. The cold aisle control circuit for signal forwarding in a server rack according to claim 1, characterized in that, The signal is output externally by switching between the normally closed and normally open contacts of the intermediate relay group.

7. The cold aisle control circuit for signal forwarding in a server rack according to claim 1, characterized in that, The DC electromagnet YA controls the opening and closing of the skylight.

8. The cold aisle control circuit for signal forwarding in a server rack according to claim 1, characterized in that, It also includes terminal blocks.

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