Increasing the reliability of solution exchanges by monitoring solenoid valve actuation.
J Neurosci Methods
; 185(2): 280-3, 2010 Jan 15.
Article
em En
| MEDLINE
| ID: mdl-19835912
Solenoid valves are a core component of most solution perfusion systems used in neuroscience research. As they open and close, they control the flow of solution through each perfusion line, thereby modulating the timing and sequence of chemical stimulation. The valves feature a ferromagnetic plunger that moves due to the magnetization of the solenoid and returns to its initial position with the aid of a spring. The delays between the time of voltage application or removal and the actual opening or closing of the valve are difficult to predict beforehand and have to be measured experimentally. Here we propose a simple method for monitoring whether and when the solenoid valve opens and closes. The proposed method detects the movement of the plunger as it generates a measurable signal on the solenoid that surrounds it. Using this plunger signal, we detected the opening and closing of diaphragm and pinch solenoid valves with a systematic error of less than 2ms. After this systematic error is subtracted, the trial-to-trial error was below 0.2ms.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Soluções
/
Fluxo Pulsátil
/
Microfluídica
/
Desenho de Equipamento
Tipo de estudo:
Prognostic_studies
Idioma:
En
Revista:
J Neurosci Methods
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Argentina
País de publicação:
Holanda