Remote constant-temperature box body of seismometer sensor based on PLC (Programmable Logic Controller)

Abstract

The utility model discloses a remote constant-temperature box body of a seismometer sensor based on a PLC. The remote constant-temperature box body comprises a heat preservation box, a box cover, a supporting mechanism and a constant-temperature control mechanism. According to the remote constant-temperature box body of the seismometer sensor based on the PLC, the heating branch and the refrigeration branch are used for controlling the temperature in the heat preservation box, the temperature sensor collects temperature data in the heat preservation box in real time and transmits the temperature data to the controller, and the controller controls the heating branch and the refrigeration branch according to the temperature data. The temperature in the heat preservation box is always suitable for the seismograph to work, so that the long-term stable operation of the seismograph is ensured, and the monitoring capability and the detection precision of the seismograph are ensured; the seismograph is protected by using the thermal insulation box and the box cover, and the constant temperature control mechanism is convenient to control the temperature in the thermal insulation box; the lower side of the supporting mechanism extends out of the heat preservation box and is supported on the ground, so that the detection accuracy of the seismograph is ensured, and the supporting mechanism can be stored in the heat preservation box during movement or storage and is convenient to transfer.

Description

Technical Field

[0001] The utility model relates to a constant temperature box, in particular to a remote constant temperature box of a seismometer sensor based on PLC. Background Art

[0002] A seismometer sensor is an instrument that can convert the movement of the earth into relative movement inside the sensor. Its mechanical structure model is composed of modules such as mass blocks, springs, dampers, and debugging circuits. When an earthquake occurs and causes the ground to shake, the mass block will record the vibration of the ground due to inertia, and then obtain the acceleration value or velocity value. However, the seismometer sensor is greatly affected by temperature. When the working environment temperature changes, the zero drift of the sensor will cause a large measurement error. Especially when the temperature changes drastically, it is difficult to obtain accurate values ​​even if temperature compensation is performed later.

[0003] In the field of earthquake observation, the current constant temperature control of seismometer sensors mainly relies on the air conditioning equipment in the instrument observation room, which is easily affected by lightning disasters, affecting the long-term stable operation of the sensor, resulting in the weakening of monitoring capabilities and detection accuracy. Under this premise, a remote constant temperature system for seismometer sensors based on PLC is designed. Utility Model Content

[0004] Purpose of the utility model: to provide a remote constant temperature box for a seismometer sensor based on PLC, which can perform constant temperature control on the seismometer and reduce the impact of disastrous weather.

[0005] Technical solution: The remote constant temperature box of the PLC-based seismometer sensor provided by the utility model includes an insulated box, a box cover, a supporting mechanism and a constant temperature control mechanism; the constant temperature control mechanism includes a heating branch and a cooling branch; the box cover covers the top box opening of the insulated box; the lower side of the supporting mechanism is used for supporting on the ground, and the upper side is located in the insulated box for placing the seismograph; the heating branch is installed in the side wall of the insulated box for heating the insulated box; the cooling branch is installed on the insulated box for cooling the insulated box; a controller is arranged in the control box; the heating branch and the cooling branch are both driven and controlled by the controller; a temperature sensor electrically connected to the controller is installed in the insulated box.

[0006] Furthermore, a plurality of wiring tubes with their upper ends bent downward are fixed through the box cover.

[0007] Furthermore, the supporting mechanism includes a horizontal supporting seat and three supporting rods; a horizontal adjustment groove is arranged at the center of the upper side of the horizontal supporting seat; a universal bubble level is installed in the horizontal adjustment groove; three telescopic holes are arranged on the bottom plate of the insulated box; the three supporting rods are all height-adjustably mounted on the horizontal supporting seat, and the lower ends are respectively used to pass through the three telescopic holes.

[0008] Furthermore, a sealing ring is provided at the lower opening of each telescopic hole; and the lower end of the support rod is used to tightly penetrate the sealing ring.

[0009] Furthermore, the heating branch includes an electric heating wire; the cooling branch includes multiple cooling units; each cooling unit includes a semiconductor refrigerator and a heat conducting plate; the semiconductor refrigerator is installed in the side wall of the insulation box and is close to the inner tank of the insulation box; the heat conducting plate is fitted and fixed on the semiconductor refrigerator, and multiple heat dissipation plates extending out of the insulation box are fixed on the heat conducting plate; the electric heating wire is installed in the side wall of the insulation box and is close to the inner tank of the insulation box; a first electric control switch electrically connected to the controller is connected in series on the power supply line of the electric heating wire; a second electric control switch electrically connected to the controller is connected in series on the total power supply line of each semiconductor refrigerator.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the temperature in the incubator is controlled by a heating branch and a refrigeration branch, and the temperature data in the incubator is collected in real time by a temperature sensor and transmitted to a controller, and the controller controls the heating branch and the refrigeration branch according to the temperature data, so that the temperature in the incubator is always suitable for the seismograph to work, so as to ensure the long-term stable operation of the seismograph, and to ensure the monitoring capability and detection accuracy of the seismograph; the incubator and the box cover are used to protect the seismograph, and the constant temperature control mechanism is convenient for controlling the temperature in the incubator; the lower side of the support mechanism is extended out of the incubator and supported on the ground, so that the seismograph can receive seismic waves, so as to ensure the accuracy of the seismograph detection, and can be put into the incubator when moving or storing, so as to facilitate transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a cross-sectional view of the utility model;

[0012] Figure 2 It is the front view of the utility model;

[0013] Figure 3 It is a schematic diagram of the circuit structure of the utility model;

[0014] In the figure: 1. Insulation box; 2. Base; 3. Box cover; 4. Wiring pipe; 5. Handle; 6. Insulation layer; 7. Control box; 8. Heat sink; 10. Semiconductor refrigerator; 11. Temperature sensor; 12. Heating wire; 13. Seismograph; 14. Horizontal support seat; 15. Universal bubble level; 16. Horizontal adjustment slot; 18. Internal threaded pipe; 19. Support rod; 20. Telescopic hole; 21. Flexible cushion layer; 22. Sealing ring. DETAILED DESCRIPTION

[0015] The technical solution of the utility model is described in detail below with reference to the accompanying drawings, but the protection scope of the utility model is not limited to the embodiments.

[0016] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] In the description of the present invention, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc. indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0018] Embodiment 1:

[0019] like Figure 1-3 As shown, the utility model provides a remote constant temperature box for a seismometer sensor based on PLC, comprising: an insulated box 1, a box cover 3, a support mechanism and a constant temperature control mechanism; the constant temperature control mechanism comprises a heating branch and a cooling branch; the box cover 3 covers the top box opening of the insulated box 1, and a control box 7 extending into the insulated box 1 is installed on the lower side of the box cover 3; the lower side of the support mechanism is used for supporting on the ground, and the upper side is located in the insulated box 1; the support mechanism is used for placing a seismometer 13; the heating branch is installed in the insulated box 1 is in the side wall of the insulated box 1 for heating the inside of the insulated box 1; the refrigeration branch is installed on the insulated box 1 for cooling the inside of the insulated box 1; a controller is arranged in the control box 7; the heating branch and the refrigeration branch are both driven and controlled by the controller; a temperature sensor 11 electrically connected to the controller is installed on the lower side of the control box 7; an insulation layer 6 is arranged in each side wall of the box cover 3 and the insulated box 1; a handle 5 is arranged on the top surface of the box cover 3; and a plurality of feet 2 are arranged on the lower side of the insulated box 1.

[0020] The temperature in the insulated box 1 is controlled by the heating branch and the refrigeration branch, and the temperature data in the insulated box 1 is collected in real time by the temperature sensor 11 and transmitted to the controller. The controller controls the heating branch and the refrigeration branch according to the temperature data, so that the temperature in the insulated box 1 is always suitable for the operation of the seismograph 13, so as to ensure the long-term stable operation of the seismograph 13, and to ensure the monitoring capability and detection accuracy of the seismograph 13. Compared with air-conditioning equipment, natural disaster weather has less impact on the constant temperature control mechanism; the insulated box 1 and the box cover 3 are used to protect the seismograph 13, and the constant temperature control mechanism is convenient for controlling the temperature in the insulated box 1; the lower side of the supporting mechanism is extended out of the insulated box 1 and supported on the ground, so that the seismograph 13 can receive seismic waves, ensuring the accuracy of the detection of the seismograph 13, and can be put into the insulated box 1 when moving or storing, so as to facilitate transfer.

[0021] Furthermore, a plurality of wiring tubes 4 are fixed through the box cover 3, and the ends thereof extend into the control box 7; the upper ends of the wiring tubes 4 are bent downward. The upper ends of the wiring tubes 4 are bent downward to prevent water from entering the control box and the insulated box 1.

[0022] Furthermore, the supporting mechanism includes a horizontal supporting seat 14 and three supporting rods 19; a horizontal adjustment groove 16 is arranged at the center of the upper side surface of the horizontal supporting seat 14; a universal bubble level 15 is installed in the horizontal adjustment groove 16; three adjustment holes are arranged vertically on the horizontal supporting seat 14; three telescopic holes 20 are arranged on the bottom plate of the thermal insulation box 1; three internal threaded tubes 18 connected with the three adjustment holes are fixed on the upper side surface of the horizontal supporting seat 14; external threads are arranged in the middle of the three supporting rods 19; the three supporting rods 19 are respectively screwed on the three internal threaded tubes 18, and respectively penetrate the corresponding adjustment holes, and the lower ends are respectively used to penetrate the three telescopic holes 20; a flexible cushion layer 21 is arranged on the inner bottom surface of the thermal insulation box 1.

[0023] The universal bubble level 15 is used to adjust the horizontal degree of the horizontal support seat 14 to ensure the horizontal degree of the plane on which the seismograph 13 is placed; the cooperation between the internal threaded tube 18 and the external thread in the middle of the support rod 19 is used to adjust the height of the horizontal support seat 14 so that the horizontal support seat 14 does not contact the incubator 1, thereby preventing the constant temperature control mechanism and the incubator 1 from interfering with the horizontal support seat 14 and the seismograph 13; the flexible cushion layer 21 is used to adjust the horizontal support seat 14 when storing or transferring.

[0024] Furthermore, a sealing ring 22 is provided at the lower opening of each telescopic hole 20, and the lower end of the support rod 19 is used to tightly penetrate the sealing ring 22. The sealing ring 22 plays a role of waterproofing and dustproofing.

[0025] Furthermore, the heating branch includes a heating wire 12; the cooling branch includes multiple cooling units; each cooling unit includes a semiconductor refrigerator 10 and a heat conducting plate; the semiconductor refrigerator 10 is installed in the side wall of the insulation box 1 and is close to the inner tank of the insulation box; the heat conducting plate is fitted and fixed on the semiconductor refrigerator 10, and multiple heat dissipation plates 8 extending out of the insulation box 1 are fixed on the heat conducting plate; the heating wire 12 is installed in the side wall of the insulation box 1 and is close to the inner tank of the insulation box; a first electric control switch electrically connected to the controller is connected in series on the power supply line of the heating wire 12; a second electric control switch electrically connected to the controller is connected in series on the total power supply line of each semiconductor refrigerator 10.

[0026] The semiconductor refrigerator 10 is cooled and dissipated by the heat conducting plate and the heat dissipation plate 8 extending out of the heat preservation box 1 to prevent the semiconductor refrigerator 10 from overheating and affecting the cooling effect; the electric heating wire 12 and the semiconductor refrigerator 10 are attached to the inner liner of the heat preservation box 1 to realize the temperature control in the heat preservation box 1. The controller controls the electric heating wire 12 and the semiconductor refrigerator 10 according to the temperature data detected by the temperature sensor 11. When the temperature is too low, the first electric control switch is controlled to be closed, so that the electric heating wire 12 is energized to heat the heat preservation box 1 until the temperature reaches the preset range, and the first electric control switch is controlled to be disconnected. When the temperature is too high, the second electric control switch is controlled to be closed, so that each semiconductor refrigerator 10 is energized to cool the heat preservation box 1 until the temperature reaches the preset range, and the second electric control switch is controlled to be disconnected.

[0027] In the remote constant temperature box of the PLC-based seismometer sensor provided by the utility model, the controller adopts the existing PLC control module; the first electric control switch and the second electric control switch both adopt the existing control module; the heating wire 12 adopts the existing heating wire; and the semiconductor refrigerator 10 adopts the existing semiconductor refrigerator.

[0028] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be interpreted as limiting the present invention itself. Various changes can be made to it in form and detail without departing from the spirit and scope of the present invention defined in the appended claims.

Claims

1. A remote constant temperature box for a seismometer sensor based on PLC, characterized in that: The invention comprises an insulated box (1), a box cover (3), a supporting mechanism and a constant temperature control mechanism; the constant temperature control mechanism comprises a heating branch and a cooling branch; the box cover (3) covers the top box opening of the insulated box (1); the lower side of the supporting mechanism is used for supporting on the ground, and the upper side is located in the insulated box (1) and is used for placing a seismograph (13); the heating branch is installed in the side wall of the insulated box (1) and is used for heating the insulated box (1); the cooling branch is installed on the insulated box (1) and is used for cooling the insulated box (1); a controller is arranged in the control box (7); the heating branch and the cooling branch are both driven and controlled by the controller; a temperature sensor (11) electrically connected to the controller is installed in the insulated box (1).

2. The remote constant temperature box of the PLC-based seismometer sensor according to claim 1, characterized in that: A plurality of wiring tubes (4) with their upper ends bent downward are fixed through the box cover (3).

3. The remote constant temperature box of the PLC-based seismometer sensor according to claim 1, characterized in that: The support mechanism comprises a horizontal support seat (14) and three support rods (19); a horizontal adjustment groove (16) is arranged at the center of the upper side of the horizontal support seat (14); a universal bubble level (15) is installed in the horizontal adjustment groove (16); three telescopic holes (20) are arranged on the bottom plate of the heat preservation box (1); the three support rods (19) are all height-adjustably mounted on the horizontal support seat (14), and the lower ends are respectively used to penetrate the three telescopic holes (20).

4. The remote constant temperature box of the PLC-based seismometer sensor according to claim 3, characterized in that: A sealing ring (22) is provided at the lower opening of each telescopic hole (20); the lower end of the support rod (19) is used to tightly penetrate the sealing ring (22).

5. The remote constant temperature box of the PLC-based seismometer sensor according to claim 1, characterized in that: The heating branch comprises a heating wire (12); the cooling branch comprises a plurality of cooling units; each cooling unit comprises a semiconductor refrigerator (10) and a heat conducting plate; the semiconductor refrigerator (10) is installed in the side wall of the heat preservation box (1) and is in close contact with the inner container of the heat preservation box; the heat conducting plate is fixed on the semiconductor refrigerator (10), and a plurality of heat dissipation plates (8) extending out of the heat preservation box (1) are fixed on the heat conducting plate; the heating wire (12) is installed in the side wall of the heat preservation box (1) and is in close contact with the inner container of the heat preservation box; a first electric control switch electrically connected to a controller is connected in series to the power supply line of the heating wire (12); and a second electric control switch electrically connected to the controller is connected in series to the total power supply line of each semiconductor refrigerator (10).

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