Circuit for controlling, monitoring, and terminating control of, inductive loads, particularly magnetic valves in an anti-lock control system
First Claim
1. An inductive-load circuit for controlling and monitoring inductive loads comprising;
- at least one circuit amplifier (T1) for coupling at least one inductive load (MV1) in a circuit with a voltage source (B);
a control circuit (106, 105,
102) coupled to a control terminal of said at least one circuit amplifier;
a microcomputer (MC) coupled to said control circuit of said at least one circuit amplifier for applying signals to said control terminal of said at least one circuit amplifier via said control circuit for thereby controlling said at least one circuit amplifier to thereby couple the at least one inductive load in the circuit with the voltage source, said microcomputer being further coupled to said at least one circuit amplifier via a monitoring circuit (101,
103);
said monitoring circuit (101,
103) for monitoring a voltage status at an interface (VP1) of the at least one circuit amplifier and the inductive load, wherein said monitoring circuit includes a threshold monitor (103) coupled to said interface for detecting the voltage status at the interface;
wherein said inductive load circuit further includes a first circuit means (108) coupled between said threshold monitor and said control circuit for causing said control circuit to terminate control of the at least one circuit amplifier by the microcomputer via said control circuit when the threshold monitor detects a voltage at said interface outside of a threshold range thereof while said at least one circuit amplifier is being controlled by said microcomputer to couple the at least one inductive load in the circuit.
1 Assignment
0 Petitions
Accused Products
Abstract
A circuit has circuit amplifiers (T1, T2) and inductive loads (MV1, MV2) with the circuit amplifiers being controlled by control signals provided by a microcomputer (MC). The circuit accomplishes this control while monitoring a load circuit, comprised of the circuit amplifiers and the loads, and terminates control of the circuit amplifiers, without assistance of the controlling microcomputer, upon occurrence of incorrect voltages in the load circuit. Thus, the circuit of this invention allows particularly fast termination of control of the load circuit upon the appearances of critical voltages and also allows the monitoring of the load circuits by the microcomputer in a particularly uncomplicated manner.
16 Citations
17 Claims
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1. An inductive-load circuit for controlling and monitoring inductive loads comprising;
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at least one circuit amplifier (T1) for coupling at least one inductive load (MV1) in a circuit with a voltage source (B); a control circuit (106, 105,
102) coupled to a control terminal of said at least one circuit amplifier;
a microcomputer (MC) coupled to said control circuit of said at least one circuit amplifier for applying signals to said control terminal of said at least one circuit amplifier via said control circuit for thereby controlling said at least one circuit amplifier to thereby couple the at least one inductive load in the circuit with the voltage source, said microcomputer being further coupled to said at least one circuit amplifier via a monitoring circuit (101,
103);said monitoring circuit (101,
103) for monitoring a voltage status at an interface (VP1) of the at least one circuit amplifier and the inductive load, wherein said monitoring circuit includes a threshold monitor (103) coupled to said interface for detecting the voltage status at the interface;wherein said inductive load circuit further includes a first circuit means (108) coupled between said threshold monitor and said control circuit for causing said control circuit to terminate control of the at least one circuit amplifier by the microcomputer via said control circuit when the threshold monitor detects a voltage at said interface outside of a threshold range thereof while said at least one circuit amplifier is being controlled by said microcomputer to couple the at least one inductive load in the circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification