Digital simulation device of fire control system

Abstract

The utility model relates to the technical field of fire control, and discloses a fire control system digital analog device, which comprises a shell and heat dissipation nets fixedly arranged on two side walls of the shell, digital signals are converted into analog signals through a decoder in the device, and then the analog signals are amplified and adjusted through an addition amplifier. In the actual use process, due to the fact that the decoder is a resistor essentially, heat can be generated in the signal conversion process, the decoder and the interior of the device can be overheated when working for a long time, the overall signal conversion efficiency of the device can be affected due to the too high temperature, and therefore the signal conversion efficiency of the device can be influenced. Therefore, when the internal temperature of the device is too high, the interior of the shell is automatically cooled through the overheat protection structure, the fan is automatically started, the flowing speed of air is increased, and when the internal temperature of the digital simulation device of the fire control system is too high, the heat can be automatically dissipated, and meanwhile, the fan is started to accelerate the flowing speed of the air.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of fire control technology, concretely is fire control system digital analog device. BACKGROUND

[0002] Fire control system digital analog device: digital analog device is a kind of equipment for converting digital signal into analog signal.It is mainly composed of two parts: one is practical decoder with high output impedance-low current and one is high gain adder amplifier with low output impedance.Digital analog device plays an important role in data processing system, and is widely used in control servo motor, pen-type recorder and other analog devices, and precise analog sawtooth deflection voltage is generated by cathode ray tube through digital signal control.

[0003] Decoder has certain requirement to its ambient temperature in actual use, since its own nature is resistor, therefore, when signal conversion is carried out, more heat is generated, when the temperature generated is too high, it will affect the normal work of other parts in device and itself, lead to signal conversion efficiency reduction, even long time in high temperature environment can accelerate the aging of device.

[0004] Therefore, we propose fire control system digital analog device to solve the above problems. SUMMARY

[0005] The utility model aims at providing fire control system digital analog device to solve the problem that decoder has certain requirement to its ambient temperature in actual use in the above background art, since its own nature is resistor, therefore, when signal conversion is carried out, more heat is generated, when the temperature generated is too high, it will affect the normal work of other parts in device and itself, lead to signal conversion efficiency reduction, even long time in high temperature environment can accelerate the aging of device.

[0006] To achieve the above object, the utility model provides the following technical scheme: fire control system digital analog device, including shell and fixed installation in the both sides of the shell lateral wall's heat dissipation net, the inside fixed mounting of shell has decoder and adder amplifier, the inside fixed mounting of shell has heat dissipation board no.

[0007] Preferably, the overheat protection structure includes a housing fixedly installed on the upper end of the decoder, chambers are formed on both sides of the housing, and the chambers are filled with inert gas nitrogen that expands easily under heat.

[0008] Preferably, one side of the shell is provided with an opening, and the inner walls of the two sides of the shell are slidably provided with movable blocks, and the inner walls of the movable blocks and the inner wall of the chamber are jointly and fixedly provided with spring one.

[0009] Preferably, the two side walls of the shell are fixedly provided with heat dissipation plate two, the inner sides of the heat dissipation plate two are slidably provided with telescopic plates, and the side walls of the telescopic plates are fixedly connected with the side walls of the movable blocks.

[0010] Preferably, the upper ends of the two sides of the shell are slidably provided with sliding blocks, and the inner walls of the sliding blocks and the inner wall of the chamber are jointly and fixedly provided with spring two.

[0011] Preferably, the upper ends of the sliding blocks are fixedly provided with moving contacts, the inner walls of the upper ends of the shell are fixedly provided with stationary contacts, the moving contacts are slidably connected with the stationary contacts, and the fan is electrically connected with the moving contacts and the stationary contacts.

[0012] Compared with the prior art, the fire control system digital analog device has the following beneficial effects:

[0013] 1. The digital signal is converted into an analog signal by the decoder in the device, and then amplified and adjusted by the summing amplifier, so that the required analog voltage or current is finally output. In actual use, the decoder is essentially a resistor, which generates heat during signal conversion. When the working time is long, the decoder and the internal device of the device will overheat, and the high temperature will affect the signal conversion efficiency of the whole device. Therefore, when the internal temperature of the device is too high, the overheat protection structure automatically cools the shell, and automatically starts the fan to speed up the air flow.

[0014] 2. When the device is used, the heat generated by the decoder during operation can drive the overheat protection structure to start, so that the two heat dissipation plates two on the two sides of the shell can dissipate heat, and the fan is started to rotate at the same time, further speeding up the heat dissipation speed. When the temperature decreases, the volume of the expanded nitrogen gas will shrink, at which time the moving contact and the stationary contact are separated, and the fan is automatically powered off and stops working, which can save power. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole three-dimensional structure schematic view of the utility model;

[0016] Figure 2 It is a whole three-dimensional structure schematic view of the utility model;

[0017] Figure 3 It is the whole longitudinal section three-dimensional structure schematic diagram of the utility model;

[0018] Figure 4 It is the whole longitudinal section three-dimensional structure schematic diagram of the utility model; Figure 3 It is the whole longitudinal section three-dimensional structure schematic diagram of the utility model;

[0019] In the figure: 1, shell;11, heat sink one;12, heat sink two;13, expansion plate;2, heat sink;3, decoder;4, adder amplifier;5, overheat protection structure;51, shell;52, chamber;53, opening;54, movable block;55, spring one;56, slider;57, spring two;6, fan;61, moving contact;62, static contact. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] Embodiment one: please refer to Figure 1 - Figure 3 The fire control system digital simulation device comprises a shell 1 and heat sink 2 fixedly installed on the two side walls of the shell 1, a decoder 3 and an adder amplifier 4 fixedly installed in the shell 1, heat sink one 11 fixedly installed in the shell 1, the decoder 3 fixedly arranged on the heat sink one 11, overheat protection structure 5 arranged at the upper end of the decoder 3, and fan 6 fixedly installed on the inner wall of the upper end of the shell 1.

[0022] In the embodiment: when the device is used for fire control digital simulation, the decoder 3 in the device converts digital signals into analog signals, and then the adder amplifier 4 is used for amplification and adjustment, and finally the analog voltage or current meeting the requirements is output. In actual use, the decoder 3 is essentially a resistor, and heat is generated when the signal conversion is carried out. When the working time is relatively long, the decoder 3 and the device inside are overheated, and the temperature is too high, which affects the signal conversion efficiency of the device as a whole. Therefore, when the temperature inside the device is too high, the overheat protection structure 5 is used for automatically cooling the inside of the shell 1, and the fan 6 is automatically started to speed up the flow speed of air. The fire control system digital simulation device can automatically cool when the internal temperature is too high, and the fan 6 is started to speed up the flow of air.

[0023] Embodiment two: this embodiment is an improvement on the basis of embodiment 1. Specifically, please refer to Figure 2- Figure 4 The overheat protection structure 5 comprises a shell 51 fixedly installed on the upper end of the decoder 3, chambers 52 are formed on both sides of the shell 51, and the chambers 52 are filled with nitrogen gas which is easy to expand when heated. When the temperature of the decoder 3 rises during operation, the temperature is conducted to the chambers 52 through the shell 51, and the nitrogen gas in the chambers 52 is heated to expand.

[0024] An opening 53 is formed on one side of the shell 51, and movable blocks 54 are slidably installed on the inner walls of both sides of the shell 51. Springs 55 are fixedly installed between the inner walls of the movable blocks 54 and the inner walls of the chambers 52, and the movable blocks 54 can be pulled back to the original position by the springs 55 after moving.

[0025] Heat dissipation plates 12 are fixedly installed on the side walls of both sides of the shell 1, and telescopic plates 13 are slidably installed on the inner sides of the heat dissipation plates 12. The side walls of the telescopic plates 13 are fixedly connected with the side walls of the movable blocks 54, and the movable blocks 54 can drive the telescopic plates 13 to stretch when moving.

[0026] Sliding blocks 56 are slidably installed on both sides of the upper end of the shell 51, and springs 57 are fixedly installed between the inner walls of the sliding blocks 56 and the inner walls of the chambers 52. The sliding blocks 56 can be pulled back to the original position by the springs 57 after moving.

[0027] Movable contacts 61 are fixedly installed on the upper ends of the sliding blocks 56, and stationary contacts 62 are fixedly installed on both sides of the inner walls of the upper end of the shell 1. The movable contacts 61 are slidably connected with the stationary contacts 62, and the fan 6 is electrically connected with the movable contacts 61 and the stationary contacts 62. The fan 6 can be automatically started by the contact between the stationary contacts 62 and the movable contacts 61.

[0028] In the embodiment, when the device is used for digital simulation, the digital signal is converted into an analog signal by the decoder 3, and heat is generated when the signal is converted by the decoder 3. The heat generated by the decoder 3 is conducted to the inside of the cavity 52 through the shell 51 in contact with the decoder 3. The nitrogen gas in the cavity 52 expands when heated, and the expanded gas pushes the movable block 54 to slide downward. When the movable block 54 slides, the telescopic plate 13 is retracted. At this time, the two heat sinks 12 are in communication with the inside of the shell 1. When the gas expands, the slider 56 at the upper end is pushed outwards at the same time. When the slider 56 moves upwards, the movable contact 61 at the upper end moves upwards. When the movable contact 61 moves, it is in contact with the stationary contact 62 at the upper end. At this time, the fan 6 is automatically started when the power supply is connected. The rotation of the fan 6 drives the air flow in the device, which accelerates the heat dissipation in the device. When the device is used, the heat generated by the decoder 3 can drive the overheat protection structure 5 to start, so that the two heat sinks 12 on both sides of the shell 1 can dissipate heat, and the fan 6 is started at the same time. Rotate to further accelerate the heat dissipation efficiency. When the temperature decreases, the volume of the expanded nitrogen gas will shrink. At this time, the movable contact 61 and the stationary contact 62 are separated, and the fan 6 is automatically powered off and stops working, which can save power.

[0029] The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0030] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A digital analog device of fire control system, comprising a shell (1) and a heat dissipation net (2) fixedly installed on both side walls of the shell (1), a decoder (3) and an adding amplifier (4) fixedly installed in the shell (1), characterized in that: The inside of the shell (1) is fixedly installed with a heat dissipation plate one (11), the decoder (3) is fixedly arranged on the heat dissipation plate one (11), the upper end of the decoder (3) is provided with an overheating protection structure (5), and the upper end inner wall of the shell (1) is fixedly installed with a fan (6) on both sides.

2. The digital analog device for a fire control system of claim 1, wherein: The overheating protection structure (5) comprises a shell (51) fixedly installed on the upper end of the decoder (3), cavities (52) are formed in the two sides of the shell (51), and inert gas nitrogen which is easy to expand under heat is filled in the cavities (52).

3. The digital analog apparatus for a fire control system of claim 2, wherein: One side of the shell (51) is provided with an opening (53), and the inner walls of the two sides of the shell (51) are slidably installed with movable blocks (54); spring one (55) is fixedly installed between the inner wall of the movable block (54) and the inner wall of the cavity (52).

4. The digital analog apparatus for a fire control system of claim 3, wherein: The two side walls of the shell (1) are fixedly installed with heat dissipation plate two (12), the inner sides of the heat dissipation plate two (12) are slidably installed with telescopic plates (13), and the side wall of the telescopic plate (13) is fixedly connected with the side wall of the movable block (54).

5. The digital analog apparatus for a fire control system of claim 4, wherein: The upper ends of the two sides of the shell (51) are slidably installed with sliding blocks (56), and spring two (57) is fixedly installed between the inner wall of the sliding block (56) and the inner wall of the cavity (52).

6. The digital analog apparatus for a fire control system of claim 5, wherein: The upper end of the sliding block (56) is fixedly installed with a moving contact (61), the upper end inner wall of the shell (1) is fixedly installed with a static contact (62) on both sides, the moving contact (61) is slidably connected with the static contact (62), and the fan (6) is electrically connected with the moving contact (61) and the static contact (62).

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