CN218547292U - Control circuit - Google Patents

Abstract

The utility model relates to an automatic control technical field, concretely relates to control circuit includes: the movable end of the adjustable sampling unit is connected with a movable device; the control unit is arranged at the position of a movable cover plate of the water taking machine, works in an open state when the movable cover plate is in a closed state, works in a conducting state when the movable cover plate is in an open state, and drives the movable end of the adjustable sampling unit to generate a preset displacement when the movable cover plate is opened in a normal state.

Description

Control circuit

Technical Field

The utility model relates to an automatic control technical field, concretely relates to control circuit.

Background

Public direct drinking water platform, also known as public drinking water platform, outdoor water intaking machine, street water intaking machine, it is for making things convenient for people to drink water and install the public facility of can directly drinking water in the public places that people's stream is denser such as square, pier, park, airport, scenic spot, tourist attraction and flourishing way section, because the water intaking machine is placed in public area, and is in unmanned on duty state usually, therefore always install on the water intaking machine and prevent the invasion device, be used for the invasion detection technique not only the cost is cheap on the existing market, and the technique is also very simple, especially do not support electroless detection.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the prior art, the present application provides a control circuit, which aims to provide a safe, reliable and low-cost detection scheme for abnormal door opening or cover, and supports detection in a power-off (including battery) state specifically:

the utility model provides a control circuit is applied to and gets among the water machine, wherein, include:

the movable end of the adjustable sampling unit is connected with a movable device;

the control unit is arranged at the position of a movable cover plate of the water taking machine, works in an open state when the movable cover plate is in a closed state, works in a conducting state when the movable cover plate is in an open state,

and the movable end of the adjustable sampling unit is driven to generate a preset displacement by opening the movable cover plate in a normal state each time.

Preferably, the control circuit as described above, wherein the adjustable sampling unit comprises:

the first sampling structure is connected between the standard voltage and the sampling end;

a second sampling structure connected between the sampling terminal and a common ground,

the sampling end is connected with the input end of the control unit.

Preferably, in the control circuit, the first sampling structure is a resistor, and the second sampling structure is an adjustable resistor.

Preferably, in the control circuit, the first sampling structure is a capacitor, and the second sampling structure is an adjustable capacitor.

Preferably, the control circuit further comprises a comparison circuit,

the first input end of the comparison circuit is connected with the input end of the control unit;

the second input end of the comparison circuit is connected with a standard input end of the control unit;

and the output end of the comparison circuit outputs the comparison result.

Compared with the prior art, the beneficial effects of the utility model are that:

through above-mentioned structure, it is lower to be used to its cost of intrusion detection technique, especially supports electroless detection, and this patent only needs simple resistance-capacitance and simple mechanical structure can realize having the detection of electroless low-cost.

Drawings

Fig. 1 is a circuit structure diagram of a control circuit provided by the present invention;

fig. 2 is a circuit structure diagram of a control circuit according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present disclosure.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

As shown in fig. 1, the utility model provides a control circuit is applied to and gets among the water machine, wherein, include:

the movable end of the adjustable sampling unit is connected with a movable device; the adjustable sampling unit comprises: the first sampling structure is connected between the standard voltage and the sampling end; and the second sampling structure is connected between the sampling end and the public ground, and the sampling end is connected with the input end of the control unit.

Further, as shown in fig. 1, the adjustable sampling unit may be formed by a resistor, the first sampling structure is a resistor R2, and the second sampling structure is an adjustable resistor R3. Wherein the adjusting end of the adjustable resistor R3 is linked with the movable cover plate. Under the condition that the movable cover plate rotates, the adjusting end of the adjustable resistor displaces, the resistance value of the adjustable resistor changes, and whether the movable cover plate is in the invaded state at present is determined through the resistance value change of the adjustable resistor.

Illustratively, in a state of normally opening the movable cover, a change in the state of the movable cover causes a change in the resistance of the adjustable resistor R3, but since the movable cover is currently in a normal starting state, the change in the resistance does not cause a corresponding alarm.

Under the state that the movable cover plate is abnormally opened, the resistance value of the adjustable resistor R3 is changed due to the state change of the movable cover plate, and after the resistance value of the adjustable resistor R3 is changed, the voltage of the sampling end of the adjustable resistor is changed, so that the current state of intrusion can be acquired by detecting the change of the voltage, and a corresponding alarm is output.

Further, as shown in fig. 2, the adjustable sampling unit may be formed by a capacitor, the first sampling structure is a capacitor C2, and the second sampling structure is an adjustable capacitor C3. Wherein the adjusting end of the adjustable capacitor C3 is linked with the movable cover plate. Under the condition that the movable cover plate rotates, the adjusting end of the adjustable capacitor displaces, the capacitance value of the adjustable capacitor changes, and whether the movable cover plate is in the invaded state at present is determined through the capacitance value change of the adjustable capacitor.

Illustratively, in a state where the movable cover is normally opened, a change in the state of the movable cover causes a change in the capacitance value of the adjustable capacitor C3, but since the movable cover is currently in a normal starting state, the change in the capacitance value does not cause a corresponding alarm.

Under the state that the movable cover plate is abnormally opened, the capacitance value of the adjustable capacitor C3 is changed due to the state change of the movable cover plate, and after the capacitance value of the adjustable capacitor C3 is changed, the voltage of the sampling end of the adjustable capacitor C3 is changed, so that the current state of intrusion can be acquired by detecting the change of the voltage, and then corresponding alarm is output.

A control unit SW1, which is arranged at the position of a movable cover plate of the water taking machine, works in an open state when the movable cover plate is in a closed state, works in a conducting state when the movable cover plate is in an open state,

and the movable end of the adjustable sampling unit is driven to generate a preset displacement by opening the movable cover plate in a normal state each time. The predetermined displacement is a fixed displacement, for example, the predetermined displacement of the adjustable resistor is 2 mm, and the movable end of the adjustable resistor slides 2 mm each time the movable cover plate is opened.

Preferably, the control circuit further comprises a comparison circuit,

a first input end of the comparison circuit Q1 is connected with an input end of the control unit;

the second input end of the comparison circuit Q1 is connected with a standard input end of the control unit;

and the output end of the comparison circuit Q1 outputs the comparison result. When the acquired voltage acquired by the input end of the control unit is different from the voltage input by the standard input end and is in an abnormal starting state at present, the situation that the illegal invasion is caused at the moment is judged, and a corresponding alarm needs to be sent out. Once the system receives the intrusion alarm, the system further processes according to the alarm, for example, the machine stops working, and reports to the system and the corresponding responsible person. Wherein the standard input can be understood as the voltage at the last time the movable cover was opened. When the voltage difference between the current voltage and the last time when the movable cover plate is opened is different from the voltage difference caused by the fact that the adjustable resistor slides by 2 millimeters, the current state of being invaded can be determined.

It should be noted that, the voltage value obtained in the normal open state of the movable cover plate each time is recorded and is given as the reference voltage when the movable cover plate is opened next time.

Through above-mentioned structure, it is lower to be used to its cost of intrusion detection technique, especially supports electroless detection, and this patent only needs simple resistance-capacitance and simple mechanical structure can realize having the detection of electroless low-cost.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (5)

1. The utility model provides a control circuit, is applied to in getting water machine which characterized in that includes:

the movable end of the adjustable sampling unit is connected with a movable device;

the control unit is arranged at the position of a movable cover plate of the water taking machine, works in an open state when the movable cover plate is in a closed state, works in a conducting state when the movable cover plate is in an open state,

and the movable end of the adjustable sampling unit is driven to generate a preset displacement by opening the movable cover plate in a normal state each time.

2. The control circuit of claim 1, wherein the adjustable sampling unit comprises:

the first sampling structure is connected between the standard voltage and the sampling end;

the second sampling structure is connected between the sampling end and the common ground;

the sampling end is connected with the input end of the control unit.

3. The control circuit of claim 2, wherein the first sampling structure is a resistor and the second sampling structure is an adjustable resistor.

4. The control circuit of claim 2, wherein the first sampling structure is a capacitor and the second sampling structure is an adjustable capacitor.

5. The control circuit of claim 1, further comprising a comparison circuit,

the first input end of the comparison circuit is connected with the input end of the control unit;

the second input end of the comparison circuit is connected with a standard input end of the control unit;

the output end of the comparison circuit outputs a comparison result.

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