Wired vibration sensor

Abstract

The utility model relates to a vibration sensor technology, and especially relates to a wired vibration sensor. The power supply management unit is used for supplying power to the MCU main control unit; the MEMS controls the power management unit to supply power to the MEMS vibration sensor and the storage unit; the MEMS vibration sensor is used for collecting vibration signals and transmitting the collected vibration signals to the MCU main control unit; the MCU main control unit receives a vibration signal, processes the received vibration signal and transmits the processed signal to the potential adjusting unit, the potential adjusting unit is used for adjusting the received vibration signal and feeding back the signal to the MCU main control unit, and a control signal is sent to the alarm unit through the MCU main control unit. According to the vibration sensor designed by the utility model, through combination of the potential adjusting unit and the delay branch, accurate adjustment and stable control of vibration signals are realized; the design is simple and the cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to vibration sensor technology especially relates to a wired vibration sensor. BACKGROUND

[0002] Vibration sensor is widely used in the vibration monitoring of road traffic bridge, house building and other fields. The sensor is mainly used for monitoring low-frequency vibration with a frequency of less than 100Hz, and is suitable for long-term continuous data acquisition. In practical application, the vibration sensor is usually used to judge whether the vibration characteristic value exceeds the set threshold value. However, in industrial field, it is complex to set the threshold value and usually needs to adjust the parameters with the help of host computer.

[0003] Such as prior art CN202220554291.9, the vibration sensor set threshold value is complex. UTILITY MODEL CONTENT

[0004] The utility model provides a wired vibration sensor in order to solve the problem of complex vibration sensor set threshold value and usually need to adjust the parameters with the help of host computer in prior art.

[0005] In order to solve the above technical problem, the utility model solves through the following technical scheme:

[0006] A wired vibration sensor, including MCU main control unit, MEMS vibration sensor, power management unit and storage unit, it still includes potential regulation unit and alarm unit,

[0007] The power management unit is used to provide power to the MCU main control unit, and the MEMS control power management unit provides power to the MEMS vibration sensor and storage unit.

[0008] The MEMS vibration sensor is used to collect vibration signals and transmit the collected vibration signals to the MCU main control unit, the MCU main control unit receives vibration signals and processes the received vibration signals, and the processed signals are transmitted to the potential regulation unit, the potential regulation unit is used to adjust the received vibration signals and feed back the signals to the MCU main control unit, and the MCU main control unit sends control signals to the alarm unit.

[0009] As a preferred, the potential regulation unit includes potential control branch and potential regulation branch, the potential control branch is used to control the input current, and the potential regulation branch is used to adjust the current, and the adjusted current is fed back to the MCU main control unit.

[0010] As preferred, the potential control branch comprises a first triode Q1 and a first resistor R1 connected in sequence, a first end of the first triode Q1 is connected to a power supply end, a second end of the first triode Q1 is connected to the first resistor R1, and the other end of the first resistor R1 is grounded; and a control end of the first triode Q1 is connected to the MCU control unit.

[0011] As preferred, the potential adjustment branch comprises a second triode Q2 and a voltage division branch; one end of the voltage division branch is connected to the adjustment end of the potential adjustment branch to input an adjustment voltage, and the voltage division branch outputs a divided voltage of the adjustment voltage at a voltage stabilizing output end; a first end of the second triode Q2 forms a common end, a second end of the second triode Q2 is grounded, and a control end of the second triode Q2 is connected to the voltage stabilizing output end.

[0012] As preferred, the voltage division branch comprises a second resistor R2 and a third resistor R3; one end of the second resistor R2 is the adjustment end, one end of the third resistor R3 is grounded, a second end of the first resistor R1 and a second end of the second resistor R2 are connected, and the other end of the second resistor R2 and the other end of the third resistor R3 form the voltage stabilizing output end.

[0013] As preferred, the potential adjustment branch further comprises a delay branch; the delay branch is arranged at a front end of the potential control branch and is connected in series with the potential control branch.

[0014] As preferred, the delay branch comprises a fourth resistor R4 and a first capacitor C1; one end of the first capacitor C1 is connected to the control end of the first triode Q1; one end of the first capacitor C1 and one end of the resistor R4 are connected, and the other end of the resistor R4 is connected to the MCU control unit.

[0015] As preferred, the delay branch comprises a delay relay; one end of the delay relay is connected to the MCU control unit, and the other end of the delay relay is connected to the control end of the first triode Q1.

[0016] The utility model discloses a vibration sensor, which realizes accurate adjustment and stable control of a vibration signal through the combination of a potential adjustment unit and a delay branch.

[0017] The utility model discloses a vibration sensor, which realizes accurate adjustment and stable control of a vibration signal through the combination of a potential adjustment unit and a delay branch.

[0018] The utility model discloses a vibration sensor, which realizes accurate adjustment and stable control of a vibration signal through the combination of a potential adjustment unit and a delay branch.

[0019] The utility model discloses a vibration sensor, which realizes accurate adjustment and stable control of a vibration signal through the combination of a potential adjustment unit and a delay branch. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1The utility model vibration sensor schematic diagram.

[0021] Figure 2 The utility model embodiment 1 potential adjusting unit circuit schematic diagram.

[0022] Figure 3 The utility model embodiment 2 has delay branch circuit potential adjusting unit circuit schematic diagram.

[0023] Figure 4 The utility model embodiment 3 has delay branch potential adjusting unit circuit schematic diagram. DETAILED DESCRIPTION

[0024] The utility model will be described further in detail below with the accompanying drawings and embodiments.

[0025] Embodiment 1

[0026] A wired vibration sensor includes MCU host unit, MEMS vibration sensor, power management unit and storage unit;It further includes potential adjusting unit and alarm unit;

[0027] Power management unit is used to provide power supply to MCU host unit;MEMS control power management unit provides power supply to MEMS vibration sensor and storage unit;

[0028] MEMS vibration sensor is used to gather vibration signal, and the vibration signal gathered is transmitted to MCU host unit;MCU host unit accepts vibration signal, and processes the vibration signal received, transmits the signal processed to potential adjusting unit, and potential adjusting unit is used to adjust the vibration signal received, and the signal is fed back to MCU host unit, and control signal is sent to alarm unit through MCU host unit.

[0029] Figure 2 In the specific embodiment, the potential adjusting unit includes potential control branch and potential adjusting branch;Potential control branch is used to control the input current, and potential adjusting branch is used to adjust the current;And the current adjusted is fed back to MCU host unit.

[0030] Potential control branch includes first three-terminal switch device Q1 and first resistance R1 connected in turn, and the first end of first three-terminal switch device Q1 is connected with power supply end, the second end of first three-terminal switch device Q1 is connected with first resistance R1, and the other end of first resistance R1 is grounded;The control end of first three-terminal switch device Q1 is connected with MCU host unit.

[0031] The potential adjusting branch comprises a second three-terminal switch device Q2 and a voltage dividing branch; one end of the voltage dividing branch is used as an adjusting end of the potential adjusting branch to input an adjusting voltage, and outputs a voltage dividing voltage of the adjusting voltage at a stable voltage output end; a first end of the second three-terminal switch device Q2 forms a common end, a second end of the second three-terminal switch device Q2 is grounded, and a control end of the second three-terminal switch device Q2 is connected with the stable voltage output end.

[0032] The voltage dividing branch comprises a second resistor R2 and a third resistor R3; one end of the second resistor R2 is an adjusting end, one end of the third resistor R3 is grounded, a second end of the first resistor R1 and a second end of the second resistor R2 are connected, and the other end of the second resistor R2 and the other end of the third resistor R3 form a stable voltage output end.

[0033] Embodiment 2

[0034] Based on the embodiment 1, in the embodiment, Figure 3 The potential adjusting branch further comprises a delay branch; the delay branch is in front of the potential control branch and is connected with the potential control branch in series.

[0035] The delay branch comprises a fourth resistor R4 and a first capacitor C1; one end of the first capacitor is connected with the control end of the first three-terminal switch device Q1; one end of the first capacitor is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with the MCU control unit.

[0036] Embodiment 3

[0037] Based on the embodiment 1, different from the embodiment 2, Figure 4 In the embodiment, the potential adjusting branch further comprises a delay branch; the delay branch is in front of the potential control branch and is connected with the potential control branch in series. The delay branch comprises a delay relay; one end of the delay relay is connected with the MCU control unit, and the other end is connected with the control end of the first three-terminal switch device Q1. Through the delay relay, the circuit is simple and easy to realize.

Claims

1. A wired vibration sensor comprising an MCU master unit, a MEMS vibration sensor, a power management unit and a storage unit; characterized in that, The potential adjusting unit and the alarm unit are further included; The power management unit is used for providing power supply to the MCU host unit; the MEMS control power management unit is used for providing power supply to the MEMS vibration sensor and the storage unit; The MEMS vibration sensor is used for collecting vibration signals and transmitting the collected vibration signals to the MCU host unit; the MCU host unit receives the vibration signals and processes the received vibration signals, and transmits the processed signals to the potential adjusting unit; the potential adjusting unit is used for adjusting the received vibration signals and feeding back the signals to the MCU host unit, and the MCU host unit sends a control signal to the alarm unit.

2. A wired vibration sensor according to claim 1, wherein, The potential adjusting unit includes a potential control branch and a potential adjusting branch; the potential control branch is used for controlling the input current, and the potential adjusting branch is used for adjusting the current; and the adjusted current is fed back to the MCU host unit.

3. A wired vibration sensor according to claim 2, wherein, The potential control branch includes a first three-terminal switch device Q1 and a first resistor R1 connected in sequence; the first end of the first three-terminal switch device Q1 is connected to a power supply end, the second end of the first three-terminal switch device Q1 is connected to the first resistor R1, and the other end of the first resistor R1 is grounded; and the control end of the first three-terminal switch device Q1 is connected to the MCU host unit.

4. A wired vibration sensor according to claim 2, wherein, The potential adjusting branch includes a second three-terminal switch device Q2 and a voltage dividing branch; one end of the voltage dividing branch is used as a potential adjusting branch adjusting end to input an adjusting voltage, and outputs a voltage dividing voltage at a voltage stabilizing output end; the first end of the second three-terminal switch device Q2 forms a common end, the second end of the second three-terminal switch device Q2 is grounded, and the control end of the second three-terminal switch device Q2 is connected to the voltage stabilizing output end.

5. A wired vibration sensor according to claim 4, wherein, The voltage dividing branch includes a second resistor R2 and a third resistor R3; one end of the second resistor R2 is an adjusting end, one end of the third resistor R3 is grounded, the second end of the first resistor R1 and the second end of the second resistor R2 are connected, and the other end of the second resistor R2 and the other end of the third resistor R3 are connected to form a voltage stabilizing output end.

6. A wired vibration sensor according to claim 2, wherein, The potential adjusting branch further includes a delay branch; the delay branch is in front of the potential control branch and is connected in series with the potential control branch.

7. The wired vibration sensor of claim 1, wherein, The delay branch includes a fourth resistor R4 and a first capacitor C1; one end of the first capacitor is connected to the control end of the first three-terminal switch device Q1; one end of the first capacitor is connected to one end of the resistor R4, and the other end of the resistor R4 is connected to the MCU control unit.

8. The wired vibration sensor of claim 1, wherein, The delay branch includes a delay relay; one end of the delay relay is connected to the MCU control unit, and the other end of the delay relay is connected to the control end of the first three-terminal switch device Q1.

Images