Detection circuit and electronic terminal

• US 9,689,927 B2
• Filed: 07/13/2012
• Issued: 06/27/2017
• Est. Priority Date: 04/19/2012
• Status: Expired due to Fees

• Current Assignee: ZTE Corporation
• Original Assignee: ZTE Corporation
• Inventors: Yang, Liang
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US14/394,990
• Publication Number:
  US 20150123668A1
• Time in Patent Office: 1,810 Days
• Field of Search: 320107, 320132, 320149, 320DIG 21, 3406361, 34063612, 34063613, 34063615, 34063616, 34063619, 702 62, 702 63, 702 64
• CPC Class Codes: G01R 1/203 Resistors used for electric measuring, e.g. decade resistors standards, resistors for comparators, series resistors, shunts resistors in general H01C; microwave or radiowave terminations H01P1/26; coupling devices H01R
• CPC Class Codes: G01R 15/08 Circuits for altering the measuring range
• CPC Class Codes: G01R 21/06 by measuring current and voltage G01R21/08 - G01R21/133 take precedence
• CPC Class Codes: G01R 31/36 Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
• CPC Class Codes: G01R 31/3648 comprising digital calculation means, e.g. for performing an algorithm
• CPC Class Codes: G01R 31/382 Arrangements for monitoring battery or accumulator variables, e.g. SoC
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

Disclosed are a detection circuit and an electronic terminal. The detection circuit is applied in the electronic terminal and configured to detect a real-time working current of the electronic terminal. The circuit comprises: a resistor, having two ends and with variable resistance values; a sampling unit, configured to be connected with both ends of the resistor and collect voltages at both ends of the resistor; a first memory, configured to store a current calculating method and an electric quantity calculating method; a data processing control unit, configured to be connected with the sampling unit and the first memory, calculate a voltage difference across the resistor according to the voltages, and call above calculating methods to acquire a current value and an electric quantity value according to the voltage difference and the resistance value; and a power supply device, configured to provide a stable power supply for the detection circuit.

Claims

1. A detection circuit, used in an electronic terminal and configured to:

detect a real-time working current of the electronic terminal, wherein the circuit comprises;

a resistor, configured to;

comprise a first end and a second end, wherein a resistance value of the resistor is variable;

a sampling unit, configured to;

be connected to both ends of the resistor, and collect voltages at the both ends of the resistor;

a first memory, configured to;

store a current calculating algorithm and an electric quantity calculating algorithm;

a data processing control unit, configured to;

be connected with the sampling unit and the first memory, calculate a voltage difference between the both ends of the resistor based on the voltages at the both ends of the resistor, and call the current calculating algorithm and the electric quantity calculating algorithm, according to the voltage difference and the resistance value of the resistor, acquire a current value and an electric quantity value; and

a power supply device, configured to;

provide a stable power supply for the detection circuit.

2. The circuit of claim 1, wherein, the circuit further comprises a calculating unit, configured to:

based on the current calculating result and the electric quantity calculating result, acquire a remaining working time of the electronic terminal.

3. The circuit of claim 1, wherein, the sampling unit comprises:

a first sampling unit, configured to;

be connected between the first end of the resistor and the data processing control unit, and sample a voltage value at the first end; and

a second sampling unit, configured to;

be connected between the second end of the resistor and the data processing control unit, and sample a voltage value at the second end.

4. The circuit of claim 1, wherein, the circuit further comprises:

a second memory, configured to;

store a threshold value.

5. The circuit of claim 4, wherein, the circuit further comprises a configuration unit, configured to:

be connected with the second memory and the data processing control unit respectively, compare the threshold value with the voltage difference, and when the voltage difference is greater than the threshold value, adjust the resistance value of the resistor so that the voltage difference is less than or equal to the threshold value.

6. The circuit of claim 1, wherein, the circuit further comprises a temperature sensor, configured to:

be connected with the power supply device, and collect a temperature of the power supply device.

7. The circuit of claim 6, wherein, the data processing control unit is configured to:

based on the temperature, the voltage difference, and the resistance value, use the current calculating algorithm and the electric quantity calculating algorithm to calculate, so as to acquire the current value and the electric quantity value.

8. An electronic terminal, wherein, the electronic terminal comprises:

a baseband module, configured to;

control normal operation of the electronic terminal;

a detection circuit according to claim 2; and

a data interface module, configured to;

transport the remaining working time of the electronic terminal to the baseband module.

9. The electric terminal of claim 8, wherein, the electronic terminal further comprises a power supply module that is configured to provide a stable power supply for the electronic terminal.

10. An electronic terminal, wherein, the electronic terminal comprises:

a baseband module, configured to;

control normal operation of the electronic terminal;

a detection circuit according to claim 3; and

a data interface module, configured to;

transport the remaining working time of the electronic terminal to the baseband module.

11. An electronic terminal, wherein, the electronic terminal comprises:

a baseband module, configured to;

control normal operation of the electronic terminal;

a detection circuit according to claim 4; and

a data interface module, configured to;

transport the remaining working time of the electronic terminal to the baseband module.

12. An electronic terminal, wherein, the electronic terminal comprises:

a baseband module, configured to;

control normal operation of the electronic terminal;

a detection circuit according to claim 5; and

a data interface module, configured to;

transport the remaining working time of the electronic terminal to the baseband module.

13. An electronic terminal, wherein, the electronic terminal comprises:

a baseband module, configured to;

control normal operation of the electronic terminal;

a detection circuit according to claim 6; and

a data interface module, configured to;

transport the remaining working time of the electronic terminal to the baseband module.

14. An electronic terminal, wherein, the electronic terminal comprises:

a baseband module, configured to;

control normal operation of the electronic terminal;

a detection circuit according to claim 7; and

a data interface module, configured to;

transport the remaining working time of the electronic terminal to the baseband module.