CN112327690B - Multi-module physical address sampling system - Google Patents
Multi-module physical address sampling system Download PDFInfo
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- CN112327690B CN112327690B CN202011192783.XA CN202011192783A CN112327690B CN 112327690 B CN112327690 B CN 112327690B CN 202011192783 A CN202011192783 A CN 202011192783A CN 112327690 B CN112327690 B CN 112327690B
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
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Abstract
The invention is suitable for the technical field of modular equipment, and provides a multi-module physical address sampling system, which comprises: modular equipment and identification resistors; the modularized equipment comprises a main processor and at least one functional module, wherein each functional module corresponds to at least one identification resistor, and the resistance value combinations of the identification resistors corresponding to the functional modules are different; each functional module comprises a power supply and at least one divider resistor; the main processor is used for determining the physical address of the first functional module according to the voltage value of the corresponding identification resistor of the first functional module and a preset voltage-address comparison table. According to the method and the device, the physical address of each functional module can be determined according to the obtained voltage combination of the functional modules, so that the identification process of the physical address is simplified, and the problem that the identification operation of the physical address is complex in the prior art is solved.
Description
Technical Field
The invention belongs to the technical field of modular equipment, and particularly relates to a multi-module physical address sampling system.
Background
With the development of communication technology, modular devices composed of a plurality of independent functional modules are increasingly widely used.
Modular devices typically include a Battery Management System (BMS), a modular power supply, and charging stake modules, among others. In the prior art, a dial-up mode is usually adopted to identify the physical address of the modular equipment, but the dial-up switch mode needs to manually set the address for each module one by one after the system is installed
Disclosure of Invention
In view of this, embodiments of the present invention provide a multi-module physical address sampling system to solve the problem in the prior art that the operation of the multi-module physical address sampling process is complex.
A first aspect of an embodiment of the present invention provides a multi-module physical address sampling system, including: modular equipment and identification resistors; the modularized equipment comprises a main processor and at least one functional module, wherein each functional module corresponds to at least one identification resistor, and the resistance value combinations of the identification resistors corresponding to the functional modules are different;
each functional module comprises a power supply and at least one divider resistor;
the first end of each voltage-dividing resistor of the first functional module is connected with a first power supply, and the second end of each voltage-dividing resistor of the first functional module is connected with the main processor; the first functional module is any functional module of the modular equipment, and the first power supply is a power supply corresponding to the first functional module;
the first ends of the identification resistors of the first functional module are respectively connected with the second ends of the divider resistors corresponding to the first functional module, and the second end of each divider resistor corresponding to the first functional module is connected with at most one identification resistor; the second end of each identification resistor is grounded;
the main processor is used for acquiring the voltage value of the identification resistor corresponding to the first functional module, and determining the physical address of the first functional module according to the voltage value of the identification resistor corresponding to the first functional module and a preset voltage-address comparison table.
In one embodiment, each functional module further comprises an IC chip and a module processor;
at least one input end of a first IC chip is connected with the second end of each divider resistor corresponding to the first functional module in a one-to-one correspondence manner, the output end and the control end of the first IC chip are both connected with a first module processor, and the first module processor is respectively connected with the first power supply and the main processor; the first IC chip is an IC chip corresponding to the first functional module; the first module processor is a module processor corresponding to the first functional module;
the first module processor is used for acquiring an address identification request of the main processor and sending a chip selection signal to the first IC chip according to the address identification request; the first IC chip receives a chip selection signal sent by the first module processor and sequentially sends voltage values of all identification resistors corresponding to the first functional module to the first module processor according to the gating time sequence of the chip selection signal; and the first module processor sends the voltage values of the identification resistors corresponding to the first functional module to the general processor.
In one embodiment, a first filter circuit is connected in series between the first IC chip and each voltage dividing resistor.
In one embodiment, a voltage divider circuit is connected in series between the output of the first IC chip and the first module processor.
In one embodiment, each functional module corresponds to one identification resistor; the resistance values of the identification resistors are different;
the first end of the first identification resistor is connected with the first end of any voltage dividing resistor of the first functional module, and the second end of the first identification resistor is grounded; the first functional module is any one of the modular devices, and the first identification resistor is an identification resistor corresponding to the first functional module.
In one embodiment, each functional module corresponds to two identification resistors respectively;
the first end of the first identification resistor is connected with the first end of the first divider resistor, the first end of the second identification resistor is connected with the first end of the second divider resistor, and the second end of the first identification resistor and the second end of the second identification resistor are both grounded; the first identification resistor is an identification resistor corresponding to a first functional module, the second identification resistor is another identification resistor corresponding to the first functional module except the first identification resistor, the first divider resistor is any divider resistor in the first functional module, the second divider resistor is any divider resistor in the first functional module except the first divider resistor, and the first functional module is any functional module of the modular device.
In one embodiment, the multi-module physical address sampling system further comprises electronic switches, and each functional module corresponds to one electronic switch;
the first end of the first electronic switch is connected with the first end of the first identification resistor, the second end of the first electronic switch is connected with the first end of the second identification resistor, and the control end of the first electronic switch is connected with the main processor; the first electronic switch is an electronic switch corresponding to the first functional module;
and the main processor is further used for determining the physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module before and after the first electronic switch is switched on and the preset voltage-address comparison table.
In one embodiment, the total processor is further configured to obtain the number of functional modules in the modular device, and determine a physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module in the off state of the first electronic switch and the preset voltage-address comparison table when the number of functional modules in the modular device is less than or equal to a first number threshold; and when the number of the functional modules in the modularized equipment is greater than the first number threshold, determining the physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module before and after the first electronic switch is closed and the preset voltage-address comparison table.
In one embodiment, the preset voltage-address comparison table includes a voltage range corresponding to each identification resistor, a physical address of each function module, and a correspondence relationship between the voltage range of the identification resistor and the physical address of the function module.
In one embodiment, the multi-module physical address sampling system further includes connectors, each identification resistor corresponds to one connector, and each identification resistor is connected to the first end of the corresponding divider resistor through one connector.
Compared with the prior art, the embodiment of the invention has the following beneficial effects: the embodiment of the invention provides a multi-module physical address sampling system, which comprises modular equipment and an identification resistor; the modularized equipment comprises a main processor and at least one functional module, wherein each functional module corresponds to at least one identification resistor, and the resistance value combinations of the identification resistors corresponding to the functional modules are different; each functional module comprises a power supply and at least one divider resistor; the main processor is used for determining the physical address of the first functional module according to the voltage value of the corresponding identification resistor of the first functional module and a preset voltage-address comparison table. According to the embodiment of the invention, the identification resistors with different resistance combinations are arranged at one end of each functional module, so that the physical address of each functional module can be determined according to the obtained voltage combination, the identification process of the physical address is simplified, and the problem of complex physical address identification operation in the prior art is solved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of a multi-module physical address sampling system according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a multi-module physical address sampling system according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
In order to explain the technical means of the present invention, the following description will be given by way of specific examples.
In an embodiment, as shown in fig. 1, fig. 1 is a schematic structural diagram illustrating a multi-module physical address sampling system provided by an embodiment of the present invention, and the system includes:
each of the functional modules 110 includes a power supply and at least one voltage dividing resistor (R3, R4);
the first ends of the voltage-dividing resistors (R3, R4) of the first functional module are connected with the first power supply, and the second ends of the voltage-dividing resistors (R3, R4) of the first functional module are connected with the general processor 120; the first functional module is any one functional module of the modular device 10, and the first power supply is a power supply corresponding to the first functional module;
the first ends of the identification resistors (R1 and R2) of the first functional module are respectively connected with the second ends of the voltage dividing resistors (R3 and R4) corresponding to the first functional module, and the second end of each voltage dividing resistor (R3 and R4) corresponding to the first functional module is connected with at most one identification resistor (R1/R2); the second end of each identification resistor (R1/R2) is grounded;
the general processor 120 is configured to obtain a voltage value of the identification resistor (R1, R2) corresponding to the first functional module, and determine a physical address of the first functional module according to the voltage value of the identification resistor (R1, R2) corresponding to the first functional module and a preset voltage-address comparison table.
In the present embodiment, the modular device 10 is a device including a plurality of functional modules 110, including but not limited to a UPS (uninterruptible Power System) device.
Specifically, as shown in fig. 1, each of the functional modules 110 includes at least one voltage dividing resistor (R3, R4), one end of each of the voltage dividing resistors (R3, R4) is connected to the power supply, the other end of each of the voltage dividing resistors is connected to the main processor 120 through a corresponding intermediate circuit, and the values of the voltage dividing resistors (R3, R4) are the same.
In the present embodiment, the total processor 120 includes a DSP (digital signal processing) chip.
Specifically, each functional module further includes a module processor, and the module processor is connected between the second end of the voltage dividing resistor and the main processor 120. For transmitting the acquired voltage values of the voltage dividing resistors to the general processor 120.
In this embodiment, the power supply is a power supply for supplying power to the processor DSP, and is typically 3.3V.
In this embodiment, when the group value combinations of the identifying resistors (R1, R2) are different, the voltage combination of each function module 110 acquired by the total processor 120 is different, and therefore, the physical address of the function module 110 can be identified through different voltage combinations, and the voltage dividing resistors (R3, R4), the power supply, the module processor, and the total processor 120 are all the original structures of the modular device 10, in this embodiment, the physical address of each function module 110 can be identified and obtained only by connecting the identifying resistors (R1, R2) to the second ends of the voltage dividing resistors (R3, R4), and the wiring is simple and convenient.
As can be seen from the above embodiments, in the embodiments of the present invention, the identification resistors (R1, R2) with different combinations of resistance values are disposed at one end of each functional module 110, so that the physical address of each functional module 110 can be determined according to the obtained voltage combination, the identification process of the physical address is simplified, and the problem of complicated physical address identification operation in the prior art is solved.
In one embodiment, each of the functional modules further includes an IC chip and a module processor;
at least one input end of the first IC chip is connected with the second ends of the divider resistors (R3, R4) corresponding to the first functional module in a one-to-one correspondence manner, the output end and the control end of the first IC chip are both connected with a first module processor, and the first module processor is respectively connected with the first power supply and the main processor 120; the first IC chip is an IC chip corresponding to the first functional module; the first module processor is a module processor corresponding to the first functional module;
the first module processor is configured to obtain an address identification request of the main processor 120, and send a chip select signal to the first IC chip according to the address identification request; the first IC chip receives a chip selection signal sent by the first module processor and sequentially sends voltage values of identification resistors (R1 and R2) corresponding to the first functional module to the first module processor according to the gating time sequence of the chip selection signal; the first module processor transmits the voltage values of the respective identification resistances (R1, R2) corresponding to the first function module to the general processor 120.
In one embodiment, a first filter circuit is connected in series between the first IC chip and each voltage dividing resistor (R3, R4).
In one embodiment, a voltage divider circuit is connected in series between the output of the first IC chip and the first module processor.
Specifically, as shown in fig. 2, fig. 2 shows a circuit schematic diagram of a multi-module physical address sampling system for one functional module 110. It should be noted that the functional module 110 in fig. 2 is only an example provided for convenience of explaining the present solution, and is not used to limit the functional module.
As shown in fig. 2, each of the functional modules 110 may include: the first filter circuit, the IC chip, the chip selection circuit, the voltage division circuit and the second filter circuit correspond to the voltage division resistors (R3, R4). The first filter circuit comprises a resistor R136 and a capacitor C92, the chip selection circuit comprises a resistor R49, a resistor R76, a resistor R89 and three control input ends (AD _ SEL0, AD _ SEL1 and AD _ SEL 2); the voltage division circuit includes an amplifier IC17A, a resistor R212, and a resistor R131; the second filter circuit includes a resistor R317 and a capacitor C262.
As shown in fig. 2, each voltage dividing resistor (R3, R4) is connected to the corresponding input terminal of the IC chip through the corresponding first filter circuit, the control terminal A, B, C of the IC chip is connected to one end of the three resistors of the chip selection circuit in a one-to-one correspondence, and the other end of the three resistors of the chip selection circuit is connected to the processor through the corresponding control input terminal; and the output end COM of the IC chip is connected to the module processor sequentially through the voltage division circuit and the second filter circuit.
In order to identify the physical address of each functional module 110, at least one identification resistor (R1, R2) is connected to the second terminal of the voltage-dividing resistor (R3, R4) of each functional module 110. When the physical address of the functional module 110 needs to be identified, the main processor 120 sends an address identification signal to the module processor, the module processor generates a chip selection signal according to the address identification signal, and sends a group of chip selection signals to the IC chip through the chip selection circuit, the IC chip can sequentially send the voltages of the identification resistors (R1, R2) to the module processor according to the gating timing sequence in the chip selection signal, and the module processor sends the voltages of the identification resistors to the main processor 120. Thus, when the combinations of the identification resistors (R1, R2) corresponding to each functional module 110 are different, the total processor 120 can determine the physical addresses of the functional modules 110 according to the obtained voltage sequences of the functional modules 110 and the preset voltage-address comparison table.
In one embodiment of the present invention, the voltage sequences of the identifying resistors acquired by the overall processor 120 are all different. That is, if the a-channel output voltage of the first functional module is 0.3V, the B-channel output voltage is 0.6V, and the a-channel output voltage of the second functional module is 0.6V, and the B-channel output voltage is 0.3V, the total processor 120 may identify the physical address of the first functional module when acquiring the voltage sequence of 0.3/0.6, and may identify the physical address of the second functional module when acquiring the voltage sequence of 0.6/0.3.
In one embodiment, each functional module 110 corresponds to a respective identification resistor; the resistance values of the identification resistors are different;
a first end of the first identification resistor R1 is connected with a first end of any voltage dividing resistor of the first functional module, and a second end of the first identification resistor is grounded; the first functional module is any one of the functional modules of the modular device 10, and the first identification resistor is an identification resistor corresponding to the first functional module.
In the present embodiment, the number of identification resistors provided per functional module 110 is related to the total number of functional modules 110 in the modular device 10.
Specifically, the idea of implementing the present embodiment is to determine the physical address of each functional module 110 through different identification resistance combinations of each functional module 110. When each function module 110 is provided with one identifying resistor, the resistance value of each identifying resistor needs to be different in order to meet the address determination requirement.
Taking a power supply of 3V and the total number of the functional modules 110 of 10 as an example, by setting the resistance values of the identification resistors corresponding to 10 functional modules 110, the voltages at the first ends of the identification resistors can fall to 0V-0.3V, 0.3V-0.6V, 0.6V-0.9V. The overall processor 120 may determine the physical address of the corresponding functional module 110 based on the voltage range in which the resulting voltage identifying the resistance is located.
Further, since the power supply of the identification resistor connection is identical to the power supply of the module processor, the power supply of the module processor DSP is usually small, approximately 3.3V. Therefore, when the number of the functional modules is gradually increased, the voltage range of the voltage distribution of the first end of each identification resistor is smaller and smaller. However, the overall processor 120 has limited accuracy in identifying voltages and cannot accurately identify a large number of relatively close voltages. Therefore, when there are many functional modules, a bit identifying resistor needs to be added for each functional module. Therefore, the first end voltage of the original group of identification resistors can averagely fall within the range of 0-3V, the first end voltage of the newly added group of identification resistors can also averagely fall within the range of 0-3V, the resistance value of each identification resistor is not required to be limited to be different, the physical address of the functional module can be judged as long as the resistance value combination of the identification resistors of each functional module is different, and thus, the identification number of the functional module can be expanded from 10 in the case of one-bit identification resistor to 100 in the case of 2-bit identification resistors, so that the identification accuracy of the main processor 120 is improved under the condition of smaller power supply, and the identification number of the functional module 110 is enlarged.
In one embodiment, as shown in fig. 1, each functional module 110 corresponds to two identification resistors;
a first end of a first identifying resistor R1 is connected with a first end of a first voltage-dividing resistor R3, a first end of a second identifying resistor R2 is connected with a first end of a second voltage-dividing resistor R4, and a second end of the first identifying resistor R1 and a second end of the second identifying resistor R2 are both grounded; the first identification resistor R1 is an identification resistor corresponding to a first functional module, the second identification resistor R2 is another identification resistor corresponding to the first functional module except for the first identification resistor R1, the first voltage dividing resistor R3 is any voltage dividing resistor in the first functional module, the second voltage dividing resistor R4 is any voltage dividing resistor in the first functional module except for the first voltage dividing resistor R3, and the first functional module is any functional module of the modular device 10.
Preferably, if there are two identification resistors of each function module 110, the first group of identification resistors corresponding to each function module 110 may be allocated in the order of decreasing resistance, and the second group of identification resistors corresponding to each function module 110 may be allocated in the order of decreasing resistance.
In one embodiment, the multi-module physical address sampling system further comprises electronic switches, and each functional module 110 corresponds to one electronic switch;
a first terminal of a first electronic switch is connected with a first terminal of a first identification resistor R1, a second terminal of the first electronic switch is connected with a first terminal of a second identification resistor R2, and a control terminal of the first electronic switch is connected with the general processor 120; the first electronic switch is an electronic switch corresponding to the first functional module;
the main processor 120 is further configured to determine a physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module before and after the first electronic switch is turned on and the preset voltage-address comparison table.
In this embodiment, the control end of the first electronic switch may further be connected to a module processor corresponding to the first functional module. The module processor corresponding to the first functional module is also used for controlling the on-off of the first electronic switch.
In an embodiment, the general processor 120 is further configured to obtain the number of the functional modules 110 in the modular device 10, and determine a physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module in the off state of the first electronic switch and the preset voltage-address comparison table when the number of the functional modules 110 in the modular device 10 is less than or equal to a first number threshold; when the number of the functional modules 110 in the modular device 10 is greater than the first number threshold, the physical address of the first functional module is determined according to the voltage of the identification resistor corresponding to the first functional module before and after the first electronic switch is turned on and the preset voltage-address comparison table.
In this embodiment, when there are more functional modules 110 in the modular device 10 and the voltage dividing resistors of the functional modules 110 are insufficient, an electronic switch may be disposed between the first ends of two of the identifying resistors, so that when the electronic switch is in the off state, the main processor 120 may obtain the voltage of the first end of each identifying resistor separately, and when the electronic switch is in the on state, the main processor 120 may also obtain the voltage of the resistors connected in parallel, so that one identifying voltage is increased under the condition that the voltage dividing resistors are limited.
In a practical situation, in this embodiment, an electronic switch may be further added between the first ends of any two identification resistors of the functional module 110, so as to obtain more identification voltages.
In one embodiment, the preset voltage-address comparison table includes a voltage range corresponding to each identification resistor, a physical address of each function module 110, and a correspondence relationship between the voltage range of the identification resistor and the physical address of the function module 110.
In one embodiment, the multi-module physical address sampling system further includes connectors, each identification resistor corresponds to one connector, and each identification resistor is connected to the first end of the corresponding divider resistor through one connector.
It can be known from the foregoing embodiments that, in the present application, by setting the corresponding identification resistor at the second end of at least one voltage-dividing resistor in the functional module 110, the physical address of each functional module 110 can be identified without destroying the circuit of the original functional module 110, and the wiring is simple, so as to solve the problem of complex physical address identification operation in the prior art. In addition, the way of connecting multiple identification resistors to each functional module 110 can also reduce the requirement on the specification of the identification resistors and the requirement on the identification precision of the total processor 120, and meet the requirement on physical address identification when the modular device 10 has the ultra-multifunctional module 110.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (9)
1. A multi-module physical address sampling system, comprising: modular equipment and identification resistors; the modularized equipment comprises a main processor and at least one functional module, wherein each functional module corresponds to at least one identification resistor, and the resistance value combinations of the identification resistors corresponding to the functional modules are different;
each functional module comprises a power supply and at least one divider resistor;
the first end of each voltage-dividing resistor of the first functional module is connected with a first power supply, and the second end of each voltage-dividing resistor of the first functional module is connected with the main processor; the first functional module is any functional module of the modular equipment, and the first power supply is a power supply corresponding to the first functional module;
the first ends of the identification resistors of the first functional module are respectively connected with the second ends of the divider resistors corresponding to the first functional module, and the second end of each divider resistor corresponding to the first functional module is connected with at most one identification resistor; the second end of each identification resistor is grounded;
the main processor is used for acquiring the voltage value of the identification resistor corresponding to the first functional module, and determining the physical address of the first functional module according to the voltage value of the identification resistor corresponding to the first functional module and a preset voltage-address comparison table;
each functional module corresponds to two identification resistors respectively;
the first end of the first identification resistor is connected with the second end of the first divider resistor, the first end of the second identification resistor is connected with the second end of the second divider resistor, and the second end of the first identification resistor and the second end of the second identification resistor are both grounded; the first identification resistor is an identification resistor corresponding to the first functional module, the second identification resistor is another identification resistor corresponding to the first functional module except the first identification resistor, the first divider resistor is any divider resistor in the first functional module, and the second divider resistor is any divider resistor in the first functional module except the first divider resistor.
2. The multi-module physical address sampling system of claim 1, wherein each of the functional modules further comprises an IC chip and a module processor, respectively;
at least one input end of a first IC chip is connected with the second end of each divider resistor corresponding to the first functional module in a one-to-one correspondence manner, the output end and the control end of the first IC chip are both connected with a first module processor, and the first module processor is respectively connected with the first power supply and the main processor; the first IC chip is an IC chip corresponding to the first functional module; the first module processor is a module processor corresponding to the first functional module;
the first module processor is used for acquiring an address identification request of the main processor and sending a chip selection signal to the first IC chip according to the address identification request; the first IC chip receives a chip selection signal sent by the first module processor and sequentially sends voltage values of all identification resistors corresponding to the first functional module to the first module processor according to the gating time sequence of the chip selection signal; and the first module processor sends the voltage values of the identification resistors corresponding to the first functional module to the general processor.
3. The multi-module physical address sampling system of claim 2, wherein a first filter circuit is connected in series between the first IC chip and each voltage-dividing resistor.
4. A multi-module physical address sampling system according to claim 2 or 3 wherein a voltage divider circuit is connected in series between the output of the first IC chip and the first module processor.
5. The multi-module physical address sampling system of claim 1, wherein each functional module corresponds to a respective identification resistor; the resistance values of the identification resistors are different;
the first end of the first identification resistor is connected with the second end of any voltage dividing resistor of the first functional module, and the second end of the first identification resistor is grounded; the first identification resistor is an identification resistor corresponding to the first functional module.
6. The multi-module physical address sampling system of claim 1, wherein the multi-module physical address sampling system further comprises electronic switches, and each functional module corresponds to one electronic switch;
the first end of the first electronic switch is connected with the first end of the first identification resistor, the second end of the first electronic switch is connected with the first end of the second identification resistor, and the control end of the first electronic switch is connected with the main processor; the first electronic switch is an electronic switch corresponding to the first functional module;
and the main processor is further used for determining the physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module before and after the first electronic switch is switched on and the preset voltage-address comparison table.
7. The multi-module physical address sampling system of claim 6,
the main processor is further configured to obtain the number of functional modules in the modular device, and determine a physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module in the off state of the first electronic switch and the preset voltage-address comparison table when the number of functional modules in the modular device is less than or equal to a first number threshold; and when the number of the functional modules in the modularized equipment is greater than the first number threshold, determining the physical address of the first functional module according to the voltage of the identification resistor corresponding to the first functional module before and after the first electronic switch is closed and the preset voltage-address comparison table.
8. The multi-module physical address sampling system of claim 1, wherein the preset voltage-address lookup table includes a voltage range corresponding to each identification resistor, a physical address of each functional module, and a correspondence between the voltage range of the identification resistor and the physical address of the functional module.
9. The multi-module physical address sampling system of claim 1, further comprising connectors, wherein each identification resistor corresponds to one connector, and each identification resistor is connected to the second end of the corresponding voltage-dividing resistor through a connector.
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| CN112327690A (en) | 2021-02-05 |
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