Noisemaker for pipe systems

1. A noisemaker system comprising:

a node of an infrastructure system; and

a noisemaker connected in fluid communication with the node, the noisemaker comprising:

a noisemaker housing defining a noisemaker cavity, and

a pulsing device positioned within the noisemaker cavity, the pulsing device configured to contact a fluid within the noisemaker cavity and generate an acoustic signal within the fluid,

wherein the noisemaker housing is a piston housing and the noisemaker cavity is a piston cavity, and

wherein the pulsing device is a piston comprising a piston rod having a first end and a second end, wherein the first end of the piston rod is positioned exterior to the piston cavity, and wherein the second end of the piston rod is connected to a piston positioned within the piston cavity.

2. The noisemaker system of claim 1 , further comprising a purge valve in fluid communication with the noisemaker, the purge valve configured to remove air from the noisemaker system.

3. The noisemaker system of claim 1 , wherein the infrastructure system is a water infrastructure system, and wherein the node is a fire hydrant.

4. The noisemaker system of claim 1 , wherein the piston includes an O-ring positioned on the piston rod between the first end and the piston, and wherein the O-ring is positioned within the piston cavity.

5. The noisemaker system of claim 1 , further comprising a displacement mechanism configured to displace the piston within the piston cavity.

6. The noisemaker system of claim 1 , further comprising an adapter connected to the node, wherein the noisemaker is connected to the node via the adapter.

7. A noisemaker comprising:

a noisemaker housing, the noisemaker housing defining a noisemaker cavity, the noisemaker cavity in fluid communication with an infrastructure pipe system; and

a pulsing device, the pulsing device positioned within the noisemaker cavity and configured to generate an acoustic signal within a fluid of the infrastructure pipe system,

wherein the noisemaker housing is a piston housing and the noisemaker cavity is a piston cavity, and

wherein the pulsing device is a piston, wherein the piston includes a piston rod having a first end and a second end, wherein the first end of the piston rod is positioned exterior to the piston cavity, and wherein the second end of the piston rod is connected to a piston positioned within the piston cavity.

8. The noisemaker of claim 7 , further comprising a displacement mechanism configured to displace the piston within the piston cavity.

9. The noisemaker of claim 8 , wherein the displacement mechanism is an adjustable speed and adjustable force vibrator.

10. A method comprising:

mounting a noisemaker on a node of an infrastructure system, the noisemaker comprising:

a noisemaker housing defining a noisemaker cavity, and

a pulsing device positioned within the noisemaker cavity;

generating an acoustic signal in a fluid within the noisemaker cavity by contacting the pulsing device with the fluid;

recording the acoustic signal generated by the pulsing device;

estimating a power spectral density; and

determining a carrier frequency based on the power spectral density.

11. The method of claim 10 , further comprising:

generating a pseudo-random binary sequence;

modulating the pseudo-random binary sequence to the carrier frequency to generate an excitation sequence; and

generating a second acoustic sign in the fluid with the pulsing device based on the excitation sequence.

12. The method of claim 10 , wherein the noisemaker housing is a piston housing and the noisemaker cavity is a piston cavity, wherein the pulsing device is a piston comprising a piston rod having a first end and a second end, wherein the first end of the piston rod is positioned exterior to the piston cavity, wherein the second end of the piston rod is connected to a piston positioned within the piston cavity, and wherein generating the acoustic signal comprises moving the piston rod within the piston cavity.

13. The method of claim 10 , wherein the noisemaker housing is a valve housing and the noisemaker cavity is a valve cavity, wherein the pulsing device is a valve, wherein the valve is positioned within the valve cavity, and wherein generating the acoustic signal comprises rotating the valve within the valve cavity.

14. A method comprising:

mounting a noisemaker on a node of an infrastructure system, the noisemaker comprising:

a noisemaker housing defining a noisemaker cavity, and

a pulsing device positioned within the noisemaker cavity; and

generating an acoustic signal in a fluid within the noisemaker cavity by contacting the pulsing device with the fluid,

wherein the noisemaker housing is a piston housing and the noisemaker cavity is a piston cavity, wherein the pulsing device is a piston comprising a piston rod having a first end and a second end, wherein the first end of the piston rod is positioned exterior to the piston cavity, wherein the second end of the piston rod is connected to a piston positioned within the piston cavity, and wherein generating the acoustic signal comprises moving the piston rod within the piston cavity.