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Multi-module time sequence control circuit

A timing control circuit, multi-module technology, applied in the direction of program control, computer control, general control system, etc., can solve the problem of high product cost, and achieve the effect of reducing product cost, high sensitivity and simple circuit structure

Active Publication Date: 2015-05-20
QINGDAO GOERTEK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing multi-module timing control needs to be controlled by a single-chip microcomputer, resulting in high product cost, the present invention proposes a multi-module timing control circuit, which is built into a control circuit by using electronic devices with stable performance and low price, and the circuit structure is simple , high sensitivity, lower product cost

Method used

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Examples

Experimental program
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Embodiment 1

[0022] Embodiment 1, this embodiment proposes a multi-module timing control circuit, such as figure 1 As shown, it includes a delay circuit and a shaping circuit, and the delay circuit and the shaping circuit are connected to each module in a one-to-one correspondence, that is, if multiple modules need to be controlled, a set of timing control circuits need to be set for each module separately, The input end of the delay circuit is connected to the signal detection end, and the detection end is used to detect the plug state of the joint and generate a detection signal, and the output end is connected to the input end of the shaping circuit, and the output end of the shaping circuit is connected to the input end of the shaping circuit. Corresponding to the enable terminal connection of the module. The multi-module timing control circuit of this embodiment is built by using a delay circuit combined with a shaping circuit, and only limited electronic components are used. For exam...

Embodiment 2

[0026] Embodiment 2. This embodiment provides a circuit schematic diagram of another embodiment of the switch circuit in the multi-module timing control circuit, as shown in Figure 4 As shown, the first switch circuit is realized by the first NMOS transistor Q1, the second switch circuit is realized by the second NMOS transistor Q2, the gate 1 of the first NMOS transistor Q1 is connected to the detection terminal, and the gate 1 is connected to the drain 3, the source 2 is connected to the first resistor R1, the source of the second NMOS transistor Q2 is connected to the detection terminal through the second resistor R2, the gate 1 and the drain 3 are connected to the ground terminal through the capacitor C1, When the first NMOS transistor Q1 outputs a high level at the detection terminal, the voltage of the gate 1 is greater than the voltage of the source 2, and then the first NMOS transistor Q1 is turned on, and the power-on delay circuit works, and the second NMOS transisto...

Embodiment 3

[0029] Embodiment 3. This embodiment provides a circuit schematic diagram of another embodiment of the shaping circuit in the multi-module timing control circuit. Other circuit parts are the same as those described in Embodiment 1 or Embodiment 2, and will not be repeated here. . like Figure 5 As shown, the shaping circuit of this embodiment includes the first inverter U1 and the second inverter U2 connected in sequence. When the detection terminal does not detect the signal that the device is unplugged, the output is low. Therefore, the second inverter An inverter U1 inputs a low level, and outputs a high level to the second inverter U2 after being inverted by the first inverter U1, and the second inverter U2 inverts the high level again, and outputs a low level Level, the output terminal of the second inverter U2 is connected to the enable terminal of the module it controls, so the enable terminal of the module inputs a low level, and the module does not work when powered ...

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Abstract

The invention discloses a multi-module time sequence control circuit which comprises time delay circuits and shaping circuits. The time delay circuits and the shaping circuits correspond to modules in a one-to-one manner, input ends of the time delay circuits are connected with a signal detection end while output ends of the same are connected with input ends of the shaping circuits, and output ends of the shaping circuits are connected with enabling ends of the corresponding modules. The multi-module time sequence control circuit is set up by combining the time delay circuits with the shaping circuits, thereby being simple in structure and high in sensitivity, and product cost is lowered.

Description

technical field [0001] The invention belongs to the technical field of timing adjustment circuits, and in particular relates to a multi-module timing control circuit. Background technique [0002] Current electronic equipment products often include multiple modules according to functional requirements. When the system is turned on and off, due to the signal correlation of multiple modules, a timing control is required. The most commonly used control method at present is to divide the power supply of different modules, and then control each power supply module. Each module has a control signal. In this way, an MCU is often required to manage and control each power module, which will increase the complexity and cost of the system. Contents of the invention [0003] In order to solve the problem that the existing multi-module timing control needs to be controlled by a single-chip microcomputer, resulting in high product cost, the present invention proposes a multi-module ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25314
Inventor 李树鹏
Owner QINGDAO GOERTEK