Module address and on-site detection multiplexing device, method and multi-module power supply system

Abstract

The present application relates to a kind of module address and in position detection multiplexing device, method and multi-module power supply system.The module address and in position detection multiplexing device includes: power module, N frame, N module address and in position detection multiplexing circuit and detection multiplexing module;The power module is used to insert the nth frame to connect the nth module address and in position detection multiplexing circuit and output the nth sampling signal, and the sampling signal output when the power module is inserted in different frame is different, wherein N is positive integer, n is less than N positive integer;The detection multiplexing module is used to determine whether the power module is in position based on the nth sampling signal and obtain the address of the power module.Therefore, the present application ingeniously uses a simple circuit to simultaneously realize module address detection and in position detection by a signal port, so that the device is less, the cost is low, and the reliability is high.

Description

Technical Field

[0001] This invention relates to the field of power systems, and more specifically, to a module address and presence detection multiplexing device, method, and multi-module power system. Background Technology

[0002] In multi-module power supply systems, power modules are typically connected to the system via slotted frames. Therefore, multi-module power supply systems generally require a module presence identification circuit to determine if a module is properly installed. Furthermore, to prevent confusion in communication information between different power modules, multi-module power supply systems also require a module address identification circuit.

[0003] Figure 1A-1B A prior art module presence identification circuit is shown. For example... Figure 1A As shown, when the power module is not installed correctly, connectors S1 and S2 are disconnected, and the detection signal (Position) voltage is Vcc, which is a high level. Figure 1B As shown, when the power module is installed in place, connectors S1 and S2 are closed, and the detection signal (position) becomes GND, which is a low level. Therefore, by judging the high or low level of the detection signal, it can be determined whether the power module is installed correctly. Figure 2A-2B Another prior art module-in-place identification circuit is shown. For example... Figure 2A As shown, when the power module is not installed correctly, the connector S1 detection signal (position) is at a high level. Figure 2B As shown, when the power module is installed in place, connector S1 is in the closed state, and the detection signal (position) becomes low.

[0004] Figure 2C A circuit diagram of a prior art module address identification circuit is shown. For example... Figure 2C As shown, S1, S2, S3… are DIP switches. When the switch is open, the corresponding signal is high; when the switch is closed, the corresponding signal is low. Different modules use different DIP switches, so that the modules detect different signals, which can then be used as module address identification signals.

[0005] However, the existing technology has drawbacks. The power supply system requires both a module presence identification circuit and a module address identification circuit, resulting in a complex circuit structure and high cost. Furthermore, the existing module address identification circuit requires on-site operation, which is inconvenient for maintenance, especially when there are many DIP switches, leading to confusion and low reliability. Moreover, each DIP switch corresponds to a signal port, requiring multiple signal ports within the module for address identification, thus consuming significant resources. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a module address and presence detection multiplexing device, module address and presence detection multiplexing method and multi-module power supply system, which cleverly use a simple circuit to realize module address detection and presence detection simultaneously through a signal port. Therefore, it uses fewer components, has low cost and high reliability.

[0007] One technical solution adopted by the present invention to solve its technical problem is to construct a module address and presence detection multiplexing device, including: a power module, N chassis, N module address and presence detection multiplexing circuits and detection multiplexing modules;

[0008] The power module is used to insert into the nth chassis to connect the nth module address and the in-situ detection multiplexing circuit and output the nth sampling signal. The sampling signal output by the power module is different when it is inserted into different chassis, where N is a positive integer and n is a positive integer less than N.

[0009] The detection multiplexing module is used to determine whether the power module is in place and obtain the address of the power module based on the nth sampled signal.

[0010] In the module address and presence detection multiplexing device of the present invention, one module address and presence detection multiplexing circuit is correspondingly arranged in a group of power modules and a chassis. The module address and presence detection multiplexing circuit includes a first connector, a second connector, a first detection module and a second detection module.

[0011] The first end of the first connector, the first end of the second connector, and the first detection module are disposed in the power module. The first detection module is the same in different power modules. The first detection module is used to output the sampling signal.

[0012] The second end of the first connector, the second end of the second connector, and the second detection module are disposed in the frame, wherein the second detection module is different in different frames;

[0013] The detection multiplexing module determines whether the power module is connected in place in the chassis based on the sampling signal, and obtains the module address of the power module based on the sampling signal.

[0014] In the module address and presence detection multiplexing device of the present invention, the sampling signal is a voltage sampling signal. The detection multiplexing module is specifically used to determine whether the power module is connected in place in the chassis based on the difference between the voltage sampling signal and the voltage reference value, and to calculate the chassis where the power module is located based on the value of the voltage sampling signal to obtain the module address of the power module.

[0015] In the module address and presence detection multiplexing device described in this invention, the second detection module includes a first resistor, which is connected between the second end of the first connector and the second end of the second connector, and the resistance value of each first resistor corresponds one-to-one with the chassis it is located in.

[0016] In the module address and presence detection multiplexing device described in this invention, the first detection module includes a second resistor, the first end of the second resistor is connected to a power supply, the second end is connected to the first end of the first connector and outputs the voltage sampling signal; the first end of the second connector is grounded.

[0017] In the module address and presence detection multiplexing device described in this invention, the first detection module includes a second resistor, the first end of the second resistor is grounded, the second end is connected to the first end of the first connector and outputs the voltage sampling signal; the first end of the second connector is connected to a power supply.

[0018] In the module address and presence detection multiplexing device described in this invention, the first detection module includes a second resistor and an operational amplifier. The first end of the second resistor is connected to the first end of the second connector and the inverting input end of the operational amplifier, and the second end is connected to the output end of the operational amplifier. The non-inverting input end of the operational amplifier is grounded. The first end of the first connector is connected to a power supply, and the output end of the operational amplifier outputs the voltage sampling signal.

[0019] In the module address and presence detection multiplexing device described in this invention, the first detection module includes a second resistor and an operational amplifier. The first end of the second resistor is connected to the first end of the second connector and the inverting input end of the operational amplifier, and the second end is connected to the output end of the operational amplifier. The non-inverting input end of the operational amplifier is connected to a power supply. The first end of the first connector is grounded, and the output end of the operational amplifier outputs the voltage sampling signal.

[0020] In the module address and presence detection multiplexing device described in this invention, the first detection module includes a second resistor and a transistor. The base of the transistor is connected to the first end of the second connector, the emitter is grounded, and the collector is connected to the first end of the second resistor. The second end of the second resistor is connected to the power supply and the first end of the first connector. The collector of the transistor outputs the voltage sampling signal.

[0021] In the module address and presence detection multiplexing device described in this invention, the first detection module includes a second resistor, the first end of the second resistor is connected to a constant current source, the second end is connected to the first end of the first connector and outputs the voltage sampling signal; the first end of the second connector is grounded.

[0022] In the module address and presence detection multiplexing device of the present invention, the sampling signal is a frequency sampling signal. The detection multiplexing module is specifically used to determine whether the power module is connected in place in the chassis based on the difference between the frequency sampling signal and the frequency preset value, and to calculate the chassis where the power module is located based on the value of the frequency sampling signal to obtain the module address of the power module.

[0023] In the module address and presence detection multiplexing device described in this invention, the second detection module includes a first resistor, which is connected between the second end of the first connector and the second end of the second connector. The resistance value of each first resistor corresponds one-to-one with the chassis it is located in.

[0024] The first detection module includes a second resistor, a third resistor, a fourth resistor, a capacitor, and a comparator. The positive input terminal of the comparator is connected to the output terminal of the comparator via the second resistor and grounded via the third resistor. The negative input terminal is connected to the first terminal of the second connector and connected to the first terminal of the first connector via the fourth resistor. The output terminal of the comparator is also connected to the first terminal of the first connector and outputs the frequency sampling signal. The capacitor is connected between the negative input terminal of the comparator and ground.

[0025] Another technical solution adopted by the present invention to solve its technical problem is to construct a module address and presence detection multiplexing method, which is applied to a module address and presence detection multiplexing device. The module address and presence detection multiplexing device includes a power module, N chassis, N module address and presence detection multiplexing circuits and a detection multiplexing module.

[0026] The module address and in-situ detection multiplexing method includes:

[0027] The module address and in-situ detection multiplexing device outputs the nth sampling signal; the nth sampling signal is output when the power module is inserted into the nth chassis and connected to the nth module address and in-situ detection multiplexing circuit. The sampling signals output by the module address and in-situ detection multiplexing device are different when the power module is inserted into different chassis, where N is a positive integer and n is a positive integer less than N.

[0028] If the detection multiplexing module determines that the power module is in place based on the nth sampled signal, it obtains the address of the power module based on the nth sampled signal.

[0029] Another technical solution adopted by the present invention to solve its technical problem is to construct a multi-module power supply system, including multiple power supply modules and the module address and presence detection multiplexing device.

[0030] In this invention, N module address and presence detection multiplexing circuits and chassis are set up. When the power module is inserted into different chassis, it connects to different module address and presence detection multiplexing circuits, thereby outputting different sampling signals. Thus, module address detection and presence detection are simultaneously achieved through a single signal port. Therefore, fewer components are used, the cost is low, and the reliability is high. Furthermore, the module address and presence detection multiplexing device is divided into a part located inside the power module and a part located outside the power module, i.e., inside the chassis, through a first connector and a second connector. The circuit part inside the power module is the same, while the circuit part inside the chassis is different. Therefore, the sampling signal is different when the power module is connected to the chassis and when it is connected to different chassis. By analyzing the sampling signals, both module presence identification and module address identification can be completed simultaneously. Therefore, this invention cleverly uses a simple circuit to simultaneously achieve module address detection and presence detection through a single signal port, resulting in fewer components, lower cost, and higher reliability. Furthermore, by designing different circuits, voltage sampling signals or frequency sampling signals can be used to complete module presence identification and module address identification. Attached Figure Description

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0032] Figure 1A This is a schematic diagram of the uninstalled state of a module presence identification circuit in the prior art;

[0033] Figure 1B This is a schematic diagram of the uninstalled state of a module presence identification circuit in the prior art;

[0034] Figure 2A This is a schematic diagram of the uninstalled state of another module presence identification circuit in the prior art;

[0035] Figure 2B This is a schematic diagram of the uninstalled state of another module presence identification circuit in the prior art;

[0036] Figure 2C This is a circuit diagram of a module address recognition circuit in the prior art;

[0037] Figure 3 This is a schematic block diagram of a preferred embodiment of the module address and in-situ detection multiplexing device of the present invention;

[0038] Figure 4 This is a schematic block diagram of a first preferred embodiment of the module address and in-situ detection multiplexing device of the present invention;

[0039] Figure 5A This is a schematic diagram of the uninstalled state of the first preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0040] Figure 5B This is a schematic diagram of the installation state of the first preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0041] Figure 6A This is a schematic diagram of the uninstalled state of the second preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0042] Figure 6B This is a schematic diagram of the installation state of the second preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0043] Figure 7A This is a schematic diagram of the uninstalled state of the third preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0044] Figure 7B This is a schematic diagram of the installation state of the third preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0045] Figure 8 yes Figures 7A-7B The equivalent circuit diagram of the module address and the in-situ detection multiplexing circuit is shown below;

[0046] Figure 9 This is an equivalent circuit diagram of the fourth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0047] Figure 10A This is a schematic diagram of the uninstalled state of the fifth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0048] Figure 10B This is a schematic diagram of the installation state of the fifth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0049] Figure 11A This is a schematic diagram of the uninstalled state of the sixth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0050] Figure 11B This is a schematic diagram of the installation state of the sixth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0051] Figure 12A This is a schematic diagram of the uninstalled state of the seventh preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0052] Figure 12B This is a schematic diagram of the installation state of the seventh preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0053] Figure 13A This is a schematic diagram of the uninstalled state of the eighth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0054] Figure 13B This is a schematic diagram of the installation state of the eighth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention;

[0055] Figure 14 This is a flowchart of a preferred embodiment of the module address and in-situ detection multiplexing method of the present invention;

[0056] Figure 15 This is a schematic block diagram of a preferred embodiment of the multi-module power supply system of the present invention. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0058] This invention relates to a module address and presence detection multiplexing device, comprising: a power module, N chassis, N module address and presence detection multiplexing circuits, and a detection multiplexing module. The power module is used to insert into the nth chassis to connect to the nth module address and presence detection multiplexing circuit and output an nth sampling signal. The power module outputs different sampling signals when inserted into different chassis, where N is a positive integer and n is a positive integer less than N. The detection multiplexing module is used to determine whether the power module is present and obtain the address of the power module based on the nth sampling signal. In this invention, N module address and presence detection multiplexing circuits and chassis are set, and the power module connects to different module address and presence detection multiplexing circuits when inserted into different chassis, thereby outputting different sampling signals. Module address detection and presence detection are simultaneously achieved through a single signal port, thus requiring fewer components, resulting in low cost and high reliability.

[0059] Figure 3 This is a schematic block diagram of a preferred embodiment of the module address and presence detection multiplexing device of the present invention. Figure 3As shown, the module address and presence detection multiplexing device includes: a power module 300, N chassis, N module address and presence detection multiplexing circuits (only the nth module address and presence detection multiplexing circuit is shown), and a detection multiplexing module 200. N is a positive integer. Multiple power modules 300 can be included, as long as the number is less than the number of chassis. A power module 300 can be inserted into any chassis to connect to the corresponding module address and presence detection multiplexing circuit and output a corresponding sampling signal. That is, when chassis 300 is inserted into chassis 1, it connects to the first module address and presence detection multiplexing circuit and outputs a first sampling signal. When chassis 300 is inserted into chassis 2, it connects to the second module address and presence detection multiplexing circuit and outputs a second sampling signal, and so on. When chassis 300 is inserted into chassis N, it connects to the Nth module address and presence detection multiplexing circuit and outputs the Nth sampling signal. The sampling signals output by the power module 300 are different when it is inserted into different chassis. The detection multiplexing module 200 receives these sampling signals and determines whether the power module is in place based on these sampling signals and obtains the address of the power module.

[0060] like Figure 3 As shown, when power module 300 is inserted into the nth chassis (where n is a positive integer less than N), the nth module address and the presence detection multiplexing circuit are connected, and the nth sampling signal is output. When power module 300 is inserted into the mth chassis (where m is a positive integer less than N and n and m are not equal), the mth module address and the presence detection multiplexing circuit are connected, and the mth sampling signal is output. The detection multiplexing module 200 receives either the nth or mth sampling signal. If the detection multiplexing module 200 receives a sampling signal, it proves that a power module 300 is inserted into the chassis corresponding to that sampling signal, thus indicating that the power module is present. Since the sampling signals output when power module 300 is inserted into different chassis are different, the received sampling signal can be used to determine which chassis the power module 300 is actually inserted into, i.e., to obtain the address of the power module 300.

[0061] In a preferred embodiment of the present invention, the address of the power module 300 is obtained, and the specific value of the sampled signal is used to determine which chassis 400 the power module 300 is inserted into. In another preferred embodiment of the present invention, the addresses of different chassis 400s can be encoded, and the received encoded signal can be used to determine which chassis 400 the power module 300 is inserted into. This encoding method can be binary encoding or other encoding methods.

[0062] In this invention, N module address and presence detection multiplexing circuits and chassis are set up, and the power module is connected to different module address and presence detection multiplexing circuits when it is inserted into different chassis, thereby outputting different sampling signals. In this way, module address detection and presence detection are realized simultaneously through a single signal port. Therefore, fewer components are used, the cost is low, and the reliability is high.

[0063] Figure 4 This is a schematic block diagram of a first preferred embodiment of the module address and in-situ detection multiplexing device of the present invention. Figure 4 As shown, the module address and presence detection multiplexing device of the present invention includes: a module address and presence detection multiplexing circuit 100 and a detection multiplexing module 200, wherein one of the module address and presence detection multiplexing circuits 100 is correspondingly disposed in a group of power modules 300 and a chassis 400. Figure 4 As shown, the module address and presence detection multiplexing circuit 100 includes connector S1, connector S2, a first detection module 110, and a second detection module 120. Here, the first detection module 110 and the second detection module 120 may each include at least one resistor. Of course, in a preferred embodiment of the invention, the first detection module 110 and the second detection module 120 may also each include multiple resistors, switching devices, operational amplifier devices, etc. It should be noted that the first detection module 110 in different power supply modules 300 is the same. "Same" here can mean that the composition and structure of the detection module are completely identical, or that although their composition or structure is not completely identical, the parameters of their equivalent circuit are the same. The second detection module 120 provided in different chassis 400s is different. Similarly, "different" here can mean that the composition and structure of the detection module are completely different, or that although their composition or structure is the same, the parameters of their equivalent circuit are different. Of course, in the preferred embodiment of the present invention, the first detection module 110 in different power modules 300 is preferably exactly the same, and the circuit structure of the second detection module 120 in different frames 400 is exactly the same except for the resistance value, which makes production easier.

[0064] like Figure 4As shown, the first end of connector S1, the first end of connector S2, and the first detection module 110 are disposed in the power module 300. The first detection module 110 outputs a sampling signal. The second end of connector S1, the second end of connector S2, and the second detection module 120 are disposed in the chassis 400. The detection multiplexing module 200 determines whether the power module 300 is connected in place in the chassis 400 and the module address of the power module 300 based on the sampling signal. In a preferred embodiment of the present invention, the detection multiplexing module 200 can be any suitable processor, controller, or comparator circuit, thereby enabling the identification of the corresponding voltage signal.

[0065] Specifically, such as Figure 4 As shown, the module address and presence detection multiplexing circuit 100 is divided into two parts: one inside the power module 300 and the other outside the power module 300, i.e., inside the chassis 400, via the first connector S1 and the second connector S2. The circuit parts inside the power module 300 are identical, while those inside the chassis 400 are different. Therefore, when the power module 300 is not connected to the chassis 400, the external circuit and internal circuit of the power module 300 are not connected, which is equivalent to connecting an infinite impedance device to the internal circuit of the power module 300. When the power module 300 is connected to the chassis 400, the sampled signals are different due to the different external circuits (i.e., the second resistor) connected to the power module 300. Therefore, the sampled signals are different depending on whether the power module 300 is connected to the chassis 400 and when it is connected to different chassis 400s. By analyzing the sampled signals, both module presence identification and module address identification can be completed simultaneously. The sampled signals mentioned here can be any suitable sampled signal representing the properties of circuit parameters, such as voltage or frequency sampled signals. Therefore, this invention cleverly uses a simple circuit to simultaneously realize module address detection and presence detection through a single signal port, thus requiring fewer components, resulting in low cost and high reliability.

[0066] Furthermore, we can use various different module address and presence detection multiplexing circuits 100 to achieve the above objectives. Several examples of module address and presence detection multiplexing circuits 100 are shown below. It should be noted that the same or different module address and presence detection multiplexing circuits 100 can be used in different power modules. Based on the teachings of this invention, those skilled in the art can combine the various module address and presence detection multiplexing circuits 100 and the various detection module designs therein, all of which fall within the protection scope of this invention.

[0067] Figures 5A-5B A schematic diagram of a preferred embodiment of the module address and presence detection multiplexing circuit of the present invention is shown. Figures 5A-5B In the preferred embodiment shown, the module address and presence detection multiplexing circuit 100 includes connector S1, connector S2, a first detection module, a second detection module, and a detection multiplexing module. The first detection module 110 includes a resistor R1. The second detection module 120 includes a resistor R2. The first end of connector S1, the first end of connector S2, and resistor R1 are located inside the power module 300. The second end of connector S1, the second end of connector S2, and resistor R2 are disposed in the chassis 400, i.e., outside the power module 300. The first end of resistor R1 is connected to the power supply Vcc, and the second end is connected to the first end of connector S1 and outputs a voltage sampling signal Position; the first end of connector S2 is grounded to GND. Resistor R2 is connected between the second end of connector S1 and the second end of connector S2, and the resistance value of each resistor R2 corresponds one-to-one with its corresponding chassis 400.

[0068] like Figure 5A As shown, when the power module is not properly installed, the first and second terminals of connectors S1 and S2 are disconnected. In the equivalent series voltage divider circuit, the resistance of R2 is infinite, which is also a state of series voltage division. At this time, the voltage sampling signal Position is equal to the power supply voltage, i.e., Vcc. Therefore, when the detection multiplexing module 200 determines that the voltage value of the voltage sampling signal Position is equal to the power supply voltage, it can be determined that the power module is not actually installed correctly. If the detection multiplexing module 200 finds that the voltage value of the voltage sampling signal Position is less than the power supply voltage, it can be determined that the power module is installed correctly.

[0069] like Figure 5B As shown, when the power module is installed, a closed loop is formed between the first and second ends of connectors S1 and S2. Therefore, the voltage sampling signal Position is actually the voltage after the power supply voltage is divided by resistors R1 and R2. The voltage sampling signal Position satisfies the following formula:

[0070] Voltage sampling signal Position = Vcc * R2 / (R1 + R2).

[0071] Where Vcc is the power supply voltage. Since the value of resistor R2 varies depending on the chassis, the detection multiplexing module 200 can determine which chassis the power module is connected to based on the specific value of the obtained voltage sampling signal Position, thus knowing the chassis where the power module is located, and consequently, the module address. In a preferred embodiment of the invention, the detection multiplexing module 200 can use a pre-stored table recording the correspondence between module addresses and voltage sampling signal Positions. The module address can be obtained from the voltage sampling signal Position by looking up the table. The table lookup method is a common approach. Alternatively, a calculation formula can be provided to directly calculate the module address using the detected voltage. In other preferred embodiments of the invention, the chassis where the voltage sampling signal Position is located can also be obtained, thereby obtaining the module address. Those skilled in the art can adjust the settings according to the actual situation.

[0072] Figures 6A-6B A schematic diagram of yet another preferred embodiment of the module address and presence detection multiplexing circuit of the present invention is shown. Figures 6A-6B The illustrated embodiments and Figures 5A-5B The illustrated embodiment is similar. For example... Figures 6A-6B As shown, the first detection module 110 includes a resistor R1. The second detection module 120 includes a resistor R2. The first end of connector S1, the first end of connector S2, and resistor R1 are located inside the power module 300. The second end of connector S1, the second end of connector S2, and resistor R2 are disposed in the frame 400, i.e., outside the power module 300. The first end of resistor R1 is grounded (GND), and the second end is connected to the first end of connector S1 and outputs the voltage sampling signal Position; the first end of connector S2 is connected to the power supply Vcc.

[0073] Similarly, such as Figure 6A As shown, when the power module is not properly installed, the first and second terminals of connectors S1 and S2 are disconnected. In the equivalent series voltage divider circuit, the resistance of R2 is infinite, which is also a state of series voltage division. At this time, the voltage value of the voltage sampling signal Position is 0. Therefore, when the detection multiplexing module 200 determines that the voltage value of the voltage sampling signal Position is 0, it can be determined that the power module is not actually installed properly. If the detection multiplexing module 200 finds that the voltage value of the voltage sampling signal Position is greater than 0, it can be determined that the power module is installed properly.

[0074] Similarly, such as Figure 6BAs shown, when the power module is installed, a closed loop is formed between the first and second ends of connectors S1 and S2. Therefore, the voltage sampling signal Position is actually the voltage after the power supply voltage is divided by resistors R1 and R2. The voltage sampling signal Position satisfies the following formula:

[0075] Voltage sampling signal Position = Vcc * R1 / (R1 + R2).

[0076] Where Vcc is the power supply voltage. Since the value of resistor R2 is different in different chassis, the detection multiplexing module 200 can determine which chassis the power supply module is connected to based on the specific value of the obtained voltage sampling signal Position, that is, it can know the chassis where the power supply module is located, and in other words, it knows the module address of the power supply module.

[0077] Figures 7A-7B A schematic diagram of yet another preferred embodiment of the module address and presence detection multiplexing circuit of the present invention is shown. Figure 8 yes Figures 7A-7B The diagram shows the equivalent circuit diagram of the module address and the in-situ detection multiplexing circuit. Figures 7A-7B In the preferred embodiment shown, the circuit mainly uses operational amplifiers as its core, and its principle is similar to that of the aforementioned embodiments. For example... Figures 7A-7B In the preferred embodiment shown, the first detection module 110 includes a resistor R1 and an operational amplifier. The second detection module 120 includes a resistor R2. The first end of connector S1, the first end of connector S2, and the operational amplifier are located inside the power supply module 300. The second end of connector S1, the second end of connector S2, and resistor R2 are disposed in the chassis 400, i.e., outside the power supply module 300. The first end of resistor R1 is connected to the first end of connector S2 and the inverting input terminal of the operational amplifier, and the second end is connected to the output terminal of the operational amplifier. The non-inverting input terminal of the operational amplifier is grounded to GND. The first end of connector S1 is connected to the power supply Vcc, and the output terminal of the operational amplifier outputs the voltage sampling signal Position.

[0078] like Figure 7AAs shown, when the power module is not properly installed, the first and second terminals of connectors S1 and S2 are disconnected. In the equivalent series voltage divider circuit, the resistance of R2 is infinite, which is also a state of series voltage division. At this time, the voltage value of the voltage sampling signal Position is 0. Therefore, when the detection multiplexing module 200 determines that the voltage value of the voltage sampling signal Position is 0, it can be determined that the power module is not actually installed properly. If the detection multiplexing module 200 finds that the voltage value of the voltage sampling signal Position is greater than 0, it can be determined that the power module is installed properly.

[0079] like Figure 7B and Figure 8 As shown, when the power module is installed, a closed loop is formed between the first and second ends of connectors S1 and S2. The voltage sampling signal Position is actually the voltage after the power supply voltage is divided by resistors R1 and R2. The voltage sampling signal Position satisfies the following formula:

[0080] Voltage sampling signal Position = -Vcc*R1 / R2.

[0081] Where Vcc is the power supply voltage. Similarly, as mentioned earlier, since the value of resistor R2 is different in different chassis, the detection multiplexing module 200 can determine which chassis the power supply module is connected to based on the specific value of the obtained voltage sampling signal Position, that is, it can know the chassis where the power supply module is located, and in other words, it can know the module address of the power supply module.

[0082] Figure 9 This is an equivalent circuit diagram of the fourth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention. Figure 9 In the preferred embodiment shown, it is with Figures 7A-7B Similar, only Figures 7A-7B The middle section is an inverting amplifier circuit. And... Figure 9 The embodiment shown is a non-inverting amplifier circuit. Figure 9In the illustrated embodiment, the first detection module 110 includes a resistor R1 and an operational amplifier. The second detection module 120 includes a resistor R2. The first end of connector S1, the first end of connector S2, and the operational amplifier are located inside the power supply module 300. The second end of connector S1, the second end of connector S2, and resistor R2 are disposed in the chassis 400, i.e., outside the power supply module 300. The first end of resistor R1 is connected to the first end of connector S2 and the inverting input terminal of the operational amplifier, and the second end is connected to the output terminal of the operational amplifier. The non-inverting input terminal of the operational amplifier is connected to the power supply Vcc. The first end of connector S1 is grounded (GND), and the output terminal of the operational amplifier outputs the voltage sampling signal Position.

[0083] In this embodiment, when the power module is not installed, the voltage value of the voltage sampling signal Position is the power supply voltage Vcc; and when the power module is installed, the voltage sampling signal Position satisfies the following:

[0084] Voltage sampling signal Position = Vcc*(R1+R2) / R2.

[0085] Therefore, based on whether the voltage of the voltage sampling signal Position is less than the power supply voltage Vcc, it can be determined whether the power module is installed correctly. And based on the specific value of the obtained voltage sampling signal Position, the detection multiplexing module 200 can determine which chassis the power module is connected to, that is, it can know the chassis where the power module is located, that is, know the module address of the power module.

[0086] Figures 10A-10B A schematic diagram of yet another preferred embodiment of the module address and presence detection multiplexing circuit of the present invention is shown. (See diagram below.) Figures 10A-10B In the preferred embodiment shown, the first detection module 110 includes a resistor R1 and a transistor. The second detection module 120 includes a resistor R2. The first end of connector S1, the first end of connector S2, resistor R1, and transistor are located inside the power module 300. The second end of connector S1, the second end of connector S2, and resistor R2 are disposed in the chassis 400, i.e., outside the power module 300. The base of the transistor is connected to the first end of connector S2, the emitter is grounded (GND), and the collector is connected to the first end of resistor R1. The second end of resistor R1 is connected to the power supply Vcc and the first end of connector S1. The collector of the transistor outputs the voltage sampling signal Position. Resistor R2 is connected between the second end of connector S1 and the second end of connector S2, and the resistance value of each resistor R2 corresponds one-to-one with its corresponding chassis 400.

[0087] Similarly, such as Figure 10A As shown, when the power module is not properly installed, the first and second terminals of connectors S1 and S2 are disconnected. In the equivalent series voltage divider circuit, the resistance of R2 is infinite, which is also a state of series voltage division. At this time, the voltage sampling signal Position is equal to the power supply voltage, i.e., Vcc. Therefore, when the detection multiplexing module 200 determines that the voltage value of the voltage sampling signal Position is equal to the power supply voltage, it can be determined that the power module is not actually installed correctly. If the detection multiplexing module 200 finds that the voltage value of the voltage sampling signal Position is less than the power supply voltage, it can be determined that the power module is installed correctly.

[0088] like Figure 10B As shown, with the power module installed, a closed loop is formed between the first and second terminals of connectors S1 and S2. Therefore, the voltage sampling signal Position is actually the voltage after the power supply voltage is divided by resistors R1 and R2. Assuming the transistor's amplification factor is 'a' and Vbe is the voltage drop from the base (B) to the emitter (E) of the transistor, the voltage sampling signal Position satisfies:

[0089] Voltage sampling signal Position = Vcc - (Vcc - Vbe) * R1 * a / R2.

[0090] Similarly, since the value of resistor R2 is different in different chassis, the detection multiplexing module 200 can determine which chassis the power module is connected to based on the specific value of the obtained voltage sampling signal Position, that is, it can know the chassis where the power module is located, and in other words, it can know the module address of the power module.

[0091] In this invention, the module address and presence detection multiplexing device is divided into a portion located inside the power module and a portion located outside the power module, i.e., inside the chassis, via a first connector and a second connector. The circuitry inside the power module is identical, while the circuitry inside the chassis is different. Therefore, the voltage sampling signal differs depending on whether the power module is connected to the chassis and whether it is connected to different chassis. By analyzing the voltage sampling signal, both module presence identification and module address identification can be performed simultaneously. Thus, this invention cleverly uses a simple circuit to simultaneously achieve module address detection and presence detection through a single signal port, resulting in fewer components, lower cost, and higher reliability.

[0092] Figure 11A-11B This is a schematic diagram of a sixth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention. Figure 11A-11BIn the preferred embodiment shown, the module address and presence detection multiplexing circuit is a three-interface circuit, therefore including connector S1, connectors S2 and S3, a first detection module, a second detection module, a third detection module, and a detection multiplexing module. The first detection module 110 includes a resistor R1. The second detection module 120 includes a resistor R2. The third detection module includes a resistor R3.

[0093] The first ends of connectors S1, S2, and S3, and resistor R1 are located inside the power module 300. The second ends of connectors S1, S2, and S3, and resistors R2 and R3 are located in the chassis 400, i.e., outside the power module 300. The first end of resistor R1 is connected to the power supply Vcc, and the second end is connected to the first end of connector S1. The first end of connector S2 outputs a voltage sampling signal Position; the first end of connector S3 is grounded to GND. Resistor R2 is connected between the second ends of connectors S1 and S2, and resistor R3 is connected between the second end of connector S2 and ground. A small resistor R4, typically much smaller than resistor R3, is connected between the first ends of connectors S2 and S3. The resistance values ​​of each resistor R2 and R3 correspond one-to-one with their respective chassis 400 locations.

[0094] like Figure 11A As shown, when the power module is not properly installed, the first and second ends of connectors S1, S2, and S3 are disconnected. At this time, the voltage sampling signal Position equals the GND voltage, i.e., grounded. As mentioned earlier, whether the power module is properly installed can be determined based on whether the voltage sampling signal Position equals the GND voltage. That is, when the detected voltage value is higher than the GND voltage, the detection multiplexing module 200 can determine that the power module is properly installed.

[0095] like Figure 11B As shown, with the power module installed, a closed loop is formed between the first and second ends of connectors S1, S2, and S3. Therefore, the voltage sampling signal Position is actually the voltage after voltage division by resistors R1, R2, and R3 (R4 >> R3), and the voltage value Vout satisfies:

[0096] Vout=Vcc*(R1+R2) / (R1+R2+R3).

[0097] Similarly, since the values ​​of resistors R2 and R3 are different in different chassis, the detection multiplexing module 200 can determine which chassis the power module is connected to based on the specific value of the obtained voltage sampling signal Position, that is, it can know the chassis where the power module is located, and in other words, it can know the module address of the power module.

[0098] The multi-interface circuit in this embodiment enables more accurate detection and more flexible configuration. Furthermore, more interfaces can be used for detection as needed. In this application, the number of interfaces can also be increased according to actual needs. All of these fall within the protection scope of this invention. It should be noted that... Figure 11A-11B The multi-interface circuit shown can also be used Figures 6A-10B ,as well as Figures 12A-13B The embodiments shown are constructed as described above. Based on the teachings of this invention, those skilled in the art will be able to implement such designs, which will not be elaborated upon here.

[0099] Figure 12A-12B This is a schematic diagram of a seventh preferred embodiment of the module address and presence detection multiplexing circuit of the present invention. Figure 12A-12B In the preferred embodiment shown, a parallel voltage divider circuit is used; therefore, the first detection module 110 includes a resistor R1. The second detection module 120 includes a resistor R2. The first end of connector S1, the first end of connector S2, and resistor R1 are located inside the power module 300. The second end of connector S1, the second end of connector S2, and resistor R2 are disposed in the chassis 400, i.e., outside the power module 300. The first end of resistor R1 is connected to the constant current source Icc, and the second end is connected to the first end of connector S1 and outputs a voltage sampling signal Position; the first end of connector S2 is grounded to GND. Resistor R2 is connected between the second end of connector S1 and the second end of connector S2, and the resistance value of each resistor R2 corresponds one-to-one with its corresponding chassis 400.

[0100] like Figure 12A As shown, when the power module is not properly installed, the first and second ends of connectors S1 and S2 are disconnected. At this time, the voltage sampling signal Position is the voltage across resistor R1, i.e., Icc*R1. Therefore, when the detection multiplexing module 200 determines that the voltage value of the voltage sampling signal Position is equal to Icc*R1, it can be determined that the power module is not actually installed correctly. If the detection multiplexing module 200 finds that the voltage value of the voltage sampling signal Position is less than Icc*R1, it can be determined that the power module is properly installed.

[0101] like Figure 12BAs shown, when the power module is installed, a closed loop is formed between the first and second ends of connectors S1 and S2. Therefore, the voltage sampling signal Position is actually the voltage after the current is shunted by the parallel connection of resistors R1 and R2. The voltage sampling signal Position satisfies the following formula:

[0102] Vout = Icc * R2 * R1 / (R1 + R2).

[0103] Where Vout is the voltage sampling signal Position; Icc is the output current value of the constant current source. Similarly, since the value of resistor R2 is different in different chassis, the detection multiplexing module 200 can determine which chassis the power module is connected to based on the specific value of the obtained voltage sampling signal Position, that is, it can know the chassis where the power module is located, and in other words, it can know the module address of the power module.

[0104] Figures 13A-13B This is a schematic diagram of the eighth preferred embodiment of the module address and presence detection multiplexing circuit of the present invention. Figures 13A-13B In the preferred embodiment shown, the sampling signal is a frequency sampling signal. The detection multiplexing module determines whether the power module is connected in place in the chassis based on the difference between the frequency sampling signal and a preset frequency value, and calculates the chassis where the power module is located based on the value of the frequency sampling signal to obtain the module address of the power module. The specific implementation process is as follows.

[0105] like Figures 13A-13B As shown, the frequency generation circuit uses a comparator structure. Therefore, the first detection module includes resistors R1, R2, and R4, capacitor C, and a comparator, while the second detection module includes resistor R. The first end of connector S1, the first end of connector S2, resistors R1, R2, and R4, and the comparator are located inside the power module 300. The second end of connector S1, the second end of connector S2, and resistor R are located in the chassis 400, i.e., outside the power module 300. The positive input terminal of the comparator is connected to the output terminal of the comparator via resistor R1 and grounded via resistor R2. The negative input terminal is connected to the first end of connector S2 and connected to the first end of connector S1 via resistor R4. The output terminal of the comparator is also connected to the first end of connector S1 and outputs the frequency sampling signal Position. The first end of connector S2 is grounded to GND via capacitor C. Resistors R are connected between the second ends of connector S1 and connector S2, and the resistance value of each resistor R corresponds one-to-one with its corresponding chassis 400.

[0106] like Figure 13AAs shown, when the power module is not installed correctly, the first and second ends of connectors S1 and S2 are disconnected. At this time, the frequency sampling signal Position satisfies f = 1 / [2R4Cln(1+2R1 / R2)]. Here, f is the preset frequency value, and Cln is the capacitive reactance of capacitor C. If the detection multiplexing module 200 detects that the frequency value of the frequency sampling signal Position is equal to 1 / [2R4Cln(1+2R1 / R2)], it can be determined that the power module is not installed correctly; if the frequency value of the frequency sampling signal Position is higher than 1 / [2R4Cln(1+2R1 / R2)], it can be determined that the power module is installed correctly.

[0107] like Figure 13B As shown, the first and second ends of connectors S1 and S2 are connected. At this time, the frequency sampling signal Position satisfies f = 1 / [2R4*R*Cln(1+2R1 / R2) / (R1+R4)]. Where f is the preset frequency value, and Cln is the capacitive reactance value of capacitor C.

[0108] Similarly, since the values ​​of resistors R set in different chassis are different, the detection multiplexing module 200 can determine which chassis the power module is connected to based on the specific value of the obtained frequency sampling signal Position, that is, it can know the chassis where the power module is located, and in other words, it can know the module address of the power module.

[0109] Furthermore, in addition to the preferred embodiment shown in Figure 13, any other suitable frequency generating circuit is applicable to the present invention. Those skilled in the art can construct similar circuits according to actual needs, which will not be elaborated here.

[0110] Figure 14 This is a flowchart of a preferred embodiment of the module address and presence detection multiplexing method of the present invention. This module address and presence detection multiplexing method is applied to any of the aforementioned module address and presence detection multiplexing devices, which include a power supply module, N chassis, N module address and presence detection multiplexing circuits, and a detection multiplexing module. Specifically, as... Figure 14 As shown, in step S1, the module address and presence detection multiplexing device outputs the nth sampling signal. This nth sampling signal is output when the power module is inserted into the nth chassis and connected to the nth module address and presence detection multiplexing circuit. The sampling signal output by the module address and presence detection multiplexing device differs depending on the chassis into which the power module is inserted. Here, N is a positive integer, and n is a positive integer less than N. In step S2, the detection multiplexing module determines the power module's presence based on the nth sampling signal and then obtains the power module's address based on the nth sampling signal.

[0111] like Figure 14 As shown, in step S1, a method can be constructed based on... Figure 4-13B And its corresponding textual description includes any module address and in-situ detection multiplexing device. The specific construction process and steps can be found in the foregoing embodiments, and will not be repeated here. In step S2, the specific judgment steps can also be found in... Figure 4-10B And its corresponding textual description, which will not be repeated here.

[0112] Figure 15 This is a schematic block diagram of a preferred embodiment of the multi-module power supply system of the present invention. Figure 15 As shown, the multi-module power supply system includes multiple power modules 300 and multiple module address and presence detection multiplexing devices. As previously described, each module address and presence detection multiplexing device includes a module address and presence detection multiplexing circuit 100, a chassis 400, and a detection multiplexing module 200. One module address and presence detection multiplexing circuit 100 is correspondingly disposed in a group of power modules 300 and chassis 400. Here, all of the detection multiplexing modules 200 can be integrated into the control system or distributed in each power module. Based on the teachings of this invention, those skilled in the art can construct the aforementioned multi-module power supply system, which will not be elaborated further here.

[0113] In this invention, the module address and presence detection multiplexing device is divided into a portion located inside the power module and a portion located outside the power module, i.e., inside the chassis, via a first connector and a second connector. The circuitry inside the power module is identical, while the circuitry inside the chassis is different. Therefore, the sampling signal differs depending on whether the power module is connected to the chassis and whether it is connected to different chassis. By analyzing the sampling signal, both module presence identification and module address identification can be performed simultaneously. Thus, this invention cleverly uses a simple circuit to simultaneously achieve module address detection and presence detection through a single signal port, resulting in fewer components, lower cost, and higher reliability. Furthermore, by designing different circuits, voltage sampling signals or frequency sampling signals can be used to complete module presence identification and module address identification.

[0114] Although the present invention has been described through specific embodiments, those skilled in the art will understand that various modifications and equivalent substitutions can be made to the invention without departing from its scope. Furthermore, various modifications can be made to the invention for specific situations or materials without departing from its scope. Therefore, the present invention is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims.

[0115] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A module address and presence detection multiplexing device, characterized in that, include: Power supply module, N chassis, N module address and in-situ detection multiplexing circuit and detection multiplexing module; The power module is used to insert into the nth chassis to connect the nth module address and the in-situ detection multiplexing circuit and output the nth sampling signal. The sampling signal output by the power module is different when it is inserted into different chassis, where N is a positive integer and n is a positive integer less than N. The detection multiplexing module is used to determine whether the power module is in place and obtain the address of the power module based on the nth sampled signal; A module address and in-situ detection multiplexing circuit is correspondingly set in a group of power modules and a chassis. The module address and in-situ detection multiplexing circuit includes a first connector, a second connector, a first detection module and a second detection module. The first end of the first connector, the first end of the second connector, and the first detection module are disposed in the power module. The first detection module is the same in different power modules. The first detection module is used to output the sampling signal. The second end of the first connector, the second end of the second connector, and the second detection module are disposed in the frame, wherein the second detection module is different in different frames; The detection multiplexing module determines whether the power module is connected in place in the chassis based on the sampling signal, and obtains the module address of the power module based on the sampling signal.

2. The module address and presence detection multiplexing device according to claim 1, characterized in that, The sampling signal is a voltage sampling signal. The detection multiplexing module is specifically used to determine whether the power module is connected in place in the chassis based on the difference between the voltage sampling signal and the voltage reference value, and to calculate the chassis where the power module is located based on the value of the voltage sampling signal to obtain the module address of the power module.

3. The module address and presence detection multiplexing device according to claim 2, characterized in that, The second detection module includes a first resistor, which is connected between the second end of the first connector and the second end of the second connector. The resistance value of each first resistor corresponds one-to-one with the frame it is located in.

4. The module address and presence detection multiplexing device according to claim 3, characterized in that, The first detection module includes a second resistor, the first end of which is connected to a power supply, and the second end of which is connected to the first end of the first connector and outputs the voltage sampling signal; the first end of the second connector is grounded.

5. The module address and presence detection multiplexing device according to claim 3, characterized in that, The first detection module includes a second resistor, with a first end grounded and a second end connected to the first end of the first connector and outputting the voltage sampling signal; the first end of the second connector is connected to a power supply.

6. The module address and presence detection multiplexing device according to claim 3, characterized in that, The first detection module includes a second resistor and an operational amplifier. The first end of the second resistor is connected to the first end of the second connector and the inverting input of the operational amplifier, and the second end is connected to the output of the operational amplifier. The non-inverting input of the operational amplifier is grounded. The first end of the first connector is connected to a power supply. The output of the operational amplifier outputs the voltage sampling signal.

7. The module address and presence detection multiplexing device according to claim 3, characterized in that, The first detection module includes a second resistor and an operational amplifier. The first end of the second resistor is connected to the first end of the second connector and the inverting input of the operational amplifier, and the second end is connected to the output of the operational amplifier. The non-inverting input of the operational amplifier is connected to a power supply. The first end of the first connector is grounded, and the output of the operational amplifier outputs the voltage sampling signal.

8. The module address and presence detection multiplexing device according to claim 3, characterized in that, The first detection module includes a second resistor and a transistor. The base of the transistor is connected to the first end of the second connector, the emitter is grounded, and the collector is connected to the first end of the second resistor. The second end of the second resistor is connected to the power supply and the first end of the first connector. The collector of the transistor outputs the voltage sampling signal.

9. The module address and presence detection multiplexing device according to claim 3, characterized in that, The first detection module includes a second resistor, the first end of which is connected to a constant current source, the second end of which is connected to the first end of the first connector and outputs the voltage sampling signal; the first end of the second connector is grounded.

10. The module address and presence detection multiplexing device according to claim 1, characterized in that, The sampling signal is a frequency sampling signal. The detection multiplexing module is specifically used to determine whether the power module is connected in place in the chassis based on the difference between the frequency sampling signal and the preset frequency value, and to calculate the chassis where the power module is located based on the value of the frequency sampling signal to obtain the module address of the power module.

11. The module address and presence detection multiplexing device according to claim 10, characterized in that, The second detection module includes a first resistor, which is connected between the second end of the first connector and the second end of the second connector. The resistance value of each first resistor corresponds one-to-one with the frame it is located in. The first detection module includes a second resistor, a third resistor, a fourth resistor, a capacitor, and a comparator. The positive input terminal of the comparator is connected to the output terminal of the comparator via the second resistor and grounded via the third resistor. The negative input terminal is connected to the first terminal of the second connector and connected to the first terminal of the first connector via the fourth resistor. The output terminal of the comparator is also connected to the first terminal of the first connector and outputs the frequency sampling signal. The capacitor is connected between the negative input terminal of the comparator and ground.

12. A method for multiplexing module address and presence detection, characterized in that, The module address and presence detection multiplexing device according to any one of claims 1-11, wherein the module address and presence detection multiplexing device includes a power module, N chassis, N module address and presence detection multiplexing circuits and a detection multiplexing module; The module address and in-situ detection multiplexing method includes: The module address and in-situ detection multiplexing device outputs the nth sampling signal; the nth sampling signal is output when the power module is inserted into the nth chassis and connected to the nth module address and in-situ detection multiplexing circuit. The sampling signals output by the module address and in-situ detection multiplexing device are different when the power module is inserted into different chassis, where N is a positive integer and n is a positive integer less than N. If the detection multiplexing module determines that the power module is in place based on the nth sampled signal, it obtains the address of the power module based on the nth sampled signal.

13. A multi-module power supply system, characterized in that, It includes multiple power modules and a module address and presence detection multiplexing device according to any one of claims 1-11.

Images