CN218273127U

CN218273127U - External equipment state sensing device

Info

Publication number: CN218273127U
Application number: CN202221571805.8U
Authority: CN
Inventors: 刘振龙; 李凯; 李霖; 侯松; 周坤
Original assignee: Zhiyang Innovation Technology Co Ltd
Current assignee: Zhiyang Innovation Technology Co Ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2023-01-10
Anticipated expiration: 2032-06-22

Abstract

The utility model discloses an external device state perception device belongs to the mutual field of DODI between the device. The DI signal detection module is electrically connected with the single chip microcomputer sensing module, and the DI signal detection module and the single chip microcomputer sensing module are electrically connected with the power supply module. The utility model provides a circuit that design is simple uses through interface module, DI signal detection module, singlechip perception module and power module's cooperation, can realize the comprehensive inspection to active, two kinds of passive DI signals, has solved the drawback that current DI module can't be simultaneously any active, two kinds of passive DI signals simultaneously concurrently, is applicable to the communication demand in fields such as a thing allies oneself with more and equipment interconnection.

Description

External equipment state sensing device

Technical Field

The utility model relates to an mutual field of DODI between the device specifically is an external equipment state perception device.

Background

At present, the demand of one object for multiple connection and equipment interconnection is increasing, the ways for realizing interconnection are also various, and various communication ways and protocols are increasing. The DODI interface is used as a communication mode, and has the advantages of simple wiring, no need of protocol development and convenience in realizing simple information interaction between different devices, so that the application range is continuously expanded. Based on this, the DI interface is a general interface for detecting other devices, and its generality determines the application scenario.

At present, because each piece of equipment is designed according to respective design habits at the beginning of design, and a unified standard is lacked, when the external equipment outputs, some signals are active voltage signals, and some signals are passive on-off signals. However, most of the existing DI interfaces are single active signal detection or passive signal detection, and devices which are simple in design and compatible with active and passive signals are not common, so that the detection requirements of external equipment cannot be flexibly met in practical use.

Disclosure of Invention

An object of the utility model is to provide an external device state perception device, the design of overcoming present DI acquisition circuit commonly used is not enough to solve the equipment of the unable compatible active of current DI detection module, two kinds of passive design thoughts, and the module size is big, the numerous and diverse problem of design.

The utility model discloses a adopt following technical scheme to realize:

the external equipment state sensing device comprises an interface module connected with external equipment and a DI signal detection module, wherein the DI signal detection module is electrically connected with a single chip microcomputer sensing module, and the DI signal detection module and the single chip microcomputer sensing module are electrically connected with a power module.

In the scheme, the DI signal detection module is suitable for a signal of high-voltage DI; the pins of the DI signal detection module are connected with the pins of the single chip microcomputer sensing module, and the single chip microcomputer sensing module can sense the change of the DI signal level; the power module provides power required by operation for the DI signal detection module and the single chip microcomputer sensing module. When the device is used, the detected signals are converted into high and low level conversion in a controllable range through the conversion of the DI signal detection module, the converted signals are transmitted to the single chip microcomputer sensing module, and the single chip microcomputer sensing module then senses and judges the state of the external equipment. The program control related to the signal conversion and transmission process by the DI signal detection module adopts the prior art, and is not described in detail in this specification.

Furthermore, the DI signal detection module contains a protection circuit inside.

In the above scheme, the protection circuit is used for improving the stability of the device operation.

Further, the interface module is connected with an external active device.

Further, the interface module is connected with an external passive device.

In the above scheme, the DI signal detection module is active for both active and passive DI signals.

The utility model discloses the beneficial effect who realizes is:

(1) Compare in current device that can't compatible active and passive signal, the utility model discloses an interface module, DI signal detection module, singlechip perception module and power module's cooperation is used, can realize the comprehensive inspection to two kinds of active, passive DI signals, has solved the drawback that current DI module can't be simultaneously arbitrary active, two kinds of passive DI signals simultaneously.

(2) The utility model has simple circuit design, no requirement on the voltage of the signal to be detected, and high application universality and practicability; and the protection circuit is arranged, so that the running stability of the device can be improved.

Drawings

Fig. 1 is a schematic diagram of the circuit structure connection of the present invention.

Detailed Description

For the purpose of clarity, the embodiments of the present invention will be further described with reference to the accompanying drawings:

the utility model provides an external equipment state perception device, is including connecting external equipment's interface module, still includes DI signal detection module, DI signal detection module and singlechip perception module electrical connection, DI signal detection module with singlechip perception module and power module electrical connection, wherein DI signal detection module is inside to contain the protection circuit.

As shown in fig. 1, D10 is a protection circuit, which mainly discharges energy when high voltage invades from the outside, thereby realizing protection; u44 is a cut-off component, when the external voltage is higher than the voltage of the power module, the U44 is IN a cut-off state, namely, the external state quantity is transmitted to the MCU _ IN end; r134\ U44\ R179 is a power supply loop and has the function of keeping the initial state of the MCU _ IN end; r137 is a current limiting resistor.

Embodiment 1 of the utility model is as follows:

an interface module is connected with an external passive device; after being connected with external equipment, the DI signal detection module converts the detected signal into the conversion of high and low levels within a controllable range, and transmits the converted signal to the single chip microcomputer sensing module, and the single chip microcomputer sensing module senses the state by judging the on-off state of the external equipment.

The working principle and the working process of the embodiment are as follows:

when the external equipment is IN an 'off' state, namely the 'SIN' end is IN a suspended state, the power supply of the power supply module has no external discharge loop at the moment, the power supply discharges through a loop designed by R137\ U44\ R179, and the 'MCU _ IN' end is an original design voltage value; when the external device is turned on, namely the impedance between the SIN end and the ground is zero, the power supply of the power supply module discharges to the ground through R134\ U44, and the voltage of the MCU _ IN end becomes low, so that the single chip microcomputer sensing module can sense the on-off state of the external device by judging the change of the voltage of the MCU _ IN end, namely the single chip microcomputer sensing device senses the change of the high voltage of the MCU _ IN end, and further the DI state is judged.

Embodiment 2 of the utility model is as follows:

an interface module is connected with external active equipment; after being connected with external equipment, the DI signal detection module converts the detected signal into the conversion of high and low levels within a controllable range, and transmits the converted signal to the single chip microcomputer sensing module, and the single chip microcomputer sensing module senses the state by judging the on-off state of the external equipment.

The working principle and the working process of the embodiment are as follows:

when the external device is powered off, namely the SIN end is IN a suspended state, the power supply discharges through a loop designed by R137\ U44\ R179, the power supply of the power supply device has no discharging loop, and the MCU _ IN end is the original design voltage value (the same as the voltage value IN the passive state described IN embodiment 1); when the external equipment is powered on, namely a voltage is connected to the SIN end and is higher than a 3.3V voltage, the U44 is cut off at the moment, and the voltage of the MCU _ IN end is further increased, so that the singlechip sensing device can sense the on-off state of the external equipment by judging the change of the voltage of the MCU _ IN end, namely the singlechip sensing device senses the change of the high voltage of the MCU _ IN end, and further the DI state is judged.

Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.

Claims

1. The utility model provides an external device state perception device, is including the interface module who connects external device, its characterized in that still includes: the DI signal detection module is electrically connected with the single chip microcomputer sensing module, and the DI signal detection module and the single chip microcomputer sensing module are electrically connected with the power supply module.

2. The external device state sensing device according to claim 1, wherein: the DI signal detection module contains a protection circuit inside.

3. The external device state sensing device according to claim 1, wherein: the interface module is connected with an external active device.

4. The external device state sensing device according to claim 1, wherein: the interface module is connected with external passive equipment.